Imaging lenses, imaging modules and electronic devices

Abstract

The present invention discloses an imaging lens, an imaging module and an electronic device. The imaging lens of the embodiment of the present invention includes a prism, a first lens with refractive power, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens in sequence along the optical axis from the object side to the image side. The object side surface of the first lens is a convex surface near the optical axis, and the imaging lens satisfies the condition: 4mm≤f*ImgH / f1≤8mm. The imaging lens of the present invention deflects the light path by loading a prism, and the loading method of the imaging module is changed, which is conducive to the lightweight carrier device. By reasonably distributing the optical focal length, a telephoto characteristic is achieved, and better optical performance is obtained, ensuring that a larger imaging surface meets a larger light-collecting area, and improving the overall brightness of the imaging. It can be applied to various types of portable electronic devices that can take pictures.

Description

Technical Field

[0001] The present invention relates to optical imaging technology, and in particular to an imaging lens, an imaging module and an electronic device. Background Art

[0002] To capture distant scenes with a shallow depth of field that emphasizes the primary subject, various long-focal-length lens styles have emerged, coinciding with the need for high-pixel counts and large-size chips. However, existing three-, four-, and five-element lens modules have encountered technical bottlenecks. Based on the same chip, existing lenses increase their overall length to achieve higher image clarity, thus restricting their slimming and lightness. Balancing a longer focal length with miniaturization is a challenging challenge in lens design. Summary of the Invention

[0003] Embodiments of the present invention provide an imaging lens, an imaging module, and an electronic device.

[0004] An imaging lens according to an embodiment of the present invention includes, in order from the object side to the image side along the optical axis, a prism, a first lens having refractive power, a second lens having refractive power, a third lens having refractive power, a fourth lens having refractive power, a fifth lens having refractive power, a sixth lens having refractive power, and a seventh lens having refractive power. The object-side surface of the first lens is convex near the optical axis. The imaging lens satisfies the conditional formula: 4mm≤f*ImgH / f1≤8mm; where f is the effective focal length of the imaging lens, ImgH is half the image height corresponding to the maximum field of view of the imaging lens, and f1 is the effective focal length of the first lens.

[0005] The imaging lens of this embodiment of the present invention utilizes a prism to deflect the optical path, modifying the mounting method of the imaging lens, thereby resolving the issue of thickness hindering the thinning and lightweighting of the carrier device. Furthermore, through the rational distribution of optical power, a telephoto lens is achieved, resulting in superior optical performance. This ensures a large imaging surface with a large light-collecting area, improving overall image brightness, and is applicable to a variety of portable electronic devices capable of recording images.

[0006] In certain embodiments, the imaging lens satisfies the following condition: 1 ≤ TL / EPD ≤ 3, where TL is the distance on the optical axis from the object-side surface of the first lens to the imaging plane of the imaging lens, and EPD is the entrance pupil diameter of the imaging lens. This reduces the overall length of the imaging lens, increases the amount of light entering, and improves overall image brightness.

[0007] In some embodiments, the imaging lens satisfies the following condition: 0≤EPD / f≤1, where EPD is the entrance pupil diameter of the imaging lens. This balances light throughput and image plane backshift, achieving both a large aperture and a long focal length.

[0008] In some embodiments, the imaging lens satisfies the following condition: 1mm -1 ≤MVd / f≤6mm -1 Wherein, MVd is the average Abbe number of the first through seventh lenses. This balances chromatic aberration, and high and low Abbe numbers correspond to different refractive indices, enabling telephoto characteristics and optical imaging performance to be achieved through different material combinations.

[0009] In some embodiments, the imaging lens satisfies the following condition: 1deg / mm ≤ FOV / f ≤ 6deg / mm, where FOV is the maximum field of view of the imaging lens. This allows the field of view to be controlled within a certain range, allowing the focal length to reach a telephoto distance, thus achieving telephoto functionality.

[0010] In some embodiments, the imaging lens satisfies the following condition: -1 ≤ET1 / (CT1*f)≤0.5mm -1 Wherein, ET1 is the thickness of the maximum effective radius edge of the first lens, and CT1 is the distance from the object side surface of the first lens to the image side surface of the first lens on the optical axis. This facilitates the molding of the first lens and achieves telephoto characteristics.

[0011] In some embodiments, the imaging lens satisfies the following condition: -1 ≤ET7 / (CT7*f)≤1mm -1 Wherein, ET7 is the thickness of the maximum effective radius edge of the seventh lens, and CT7 is the distance from the object side surface of the seventh lens to the image side surface of the seventh lens on the optical axis. This facilitates the molding of the seventh lens and achieves telephoto characteristics.

[0012] In certain embodiments, the imaging lens satisfies the following condition: 0 ≤ SAG32 / CT34 ≤ 1; where SAG32 is the distance along the optical axis from the intersection of the image-side surface of the third lens and the optical axis to the edge of the optically effective area of the image-side surface of the third lens, and CT34 is the distance along the optical axis from the image-side surface of the third lens to the object-side surface of the fourth lens. Thus, through a rational layout of the optical structure, the directional changes of light entering the system can be mitigated, helping to reduce the intensity of stray light, reduce sensitivity to system performance changes, and improve the yield rate of the third lens.

[0013] In certain embodiments, the imaging lens satisfies the following condition: -1 ≤ SAG41 / CT34 ≤ 0; where SAG41 is the distance along the optical axis from the intersection of the object-side surface of the fourth lens element and the optical axis to the edge of the optically effective area of the object-side surface of the fourth lens element, and CT34 is the distance along the optical axis from the image-side surface of the third lens element to the object-side surface of the fourth lens element. Thus, through a rational layout of the optical structure, the directional changes of light entering the system can be mitigated, helping to reduce the intensity of ghost images, reduce sensitivity to system performance changes, and improve the yield rate of the fourth lens element.

[0014] In some embodiments, the imaging lens satisfies the following condition: 2≤TL / ImgH≤5, where TL is the distance on the optical axis from the object side of the first lens to the imaging plane. This facilitates miniaturization of the camera lens assembly.

[0015] The imaging module of the embodiment of the present invention comprises the imaging lens and an electronic photosensitive element as described in any of the above embodiments. The electronic photosensitive element is arranged on the image side of the imaging lens.

[0016] The imaging module of the embodiment of the present invention adopts a reasonable lens configuration, so that the imaging lens not only has high imaging quality and optical performance, but also can realize the lightness and thinness of the imaging lens, which is conducive to the portability of the imaging lens.

[0017] The electronic device according to the embodiment of the present invention comprises a housing and the imaging module described in the above embodiment, wherein the imaging module is mounted on the housing.

[0018] The electronic device of this embodiment of the present invention utilizes a rational lens configuration to achieve not only high imaging quality and optical performance, but also a lightweight and thin imaging lens, facilitating its portability. Furthermore, the housing protects the imaging module, which is exposed from the housing when in use to capture images and protected within the housing when not in use, enhancing safety.

[0019] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments with reference to the following drawings, in which:

[0021] Figure 1 is a schematic structural diagram of an imaging lens according to a first embodiment of the present invention;

[0022] Figure 2: are the spherical chromatic aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the imaging lens in the first embodiment;

[0023] Figure 3 is a schematic structural diagram of an imaging lens according to a second embodiment of the present invention;

[0024] Figure 4 : are the spherical chromatic aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the imaging lens in the second embodiment;

[0025] Figure 5 is a schematic structural diagram of an imaging lens according to a third embodiment of the present invention;

[0026] Figure 6 : are the spherical chromatic aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the imaging lens in the third embodiment;

[0027] Figure 7 is a schematic structural diagram of an imaging lens according to a fourth embodiment of the present invention;

[0028] Figure 8 1 is a diagram of spherical chromatic aberration (mm), astigmatism (mm), and distortion (%) of the imaging lens in the fourth embodiment;

[0029] Figure 9 is a schematic structural diagram of an imaging lens according to a fifth embodiment of the present invention;

[0030] Figure 10 1 is a diagram of spherical chromatic aberration (mm), astigmatism (mm), and distortion (%) of the imaging lens in the fifth embodiment;

[0031] Figure 11 is a schematic structural diagram of an imaging lens in a sixth embodiment of the present invention;

[0032] Figure 12 : spherical aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the imaging lens in the sixth embodiment;

[0033] Figure 13 is a schematic structural diagram of an imaging lens according to a seventh embodiment of the present invention;

[0034] Figure 14 Graphs spherical chromatic aberration (mm), astigmatism (mm), and distortion (%) of the imaging lens in the seventh embodiment are shown in FIG.

[0035] Reference numerals:

[0036] Imaging lens 10, first lens 1, second lens 2, third lens 3, fourth lens 4, fifth lens 5, sixth lens 6, seventh lens 7, prism 8, incident surface 81, reflecting surface 82, exit surface 83, infrared filter 9, optical axis OO'. DETAILED DESCRIPTION

[0037] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0039] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0040] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0041] Please also refer to Figure 1 、 Figure 3 、 Figure 5 、 Figure 7 、 Figure 9 、 Figure 11 、 Figure 13 The imaging lens 10 according to the embodiment of the present invention includes, from the object side to the image side along the optical axis OO', a prism 8, a first lens 1 with positive refractive power, a second lens 2 with refractive power, a third lens 3 with refractive power, a fourth lens 4 with refractive power, a fifth lens 5 with refractive power, a sixth lens 6 with refractive power, and a seventh lens 7 with refractive power. The object-side surface S1 of the first lens 1 is a convex surface near the optical axis OO'.

[0042] When imaging lens 10 is used for imaging, light emitted or reflected from the subject enters imaging lens 10 from the object side. Prism 8 has an incident surface 81, a reflective surface 82, and an exit surface 83. Light enters incident surface 81, reflects from reflective surface 82, and exits from exit surface 83. The light changes its propagation direction through prism 8, deflecting the optical path. This facilitates the arrangement of imaging lens 10. All lenses no longer need to be arranged along the direction of the optical path entering from the object side. Instead, the mounting method of imaging lens 10 is modified, with the imaging lens 10 arranged in a direction deflected from the direction of the optical path entering from the object side, i.e., at a certain angle to the thickness of the carrier on which imaging lens 10 is mounted. This solves the problem of lens thickness affecting the carrier's thinness. After deflection, the light passes through first lens 1, second lens 2, third lens 3, fourth lens 4, fifth lens 5, sixth lens 6, and seventh lens 7 in sequence, ultimately converging onto the imaging surface to form an image.

[0043] In some embodiments, the imaging lens 10 further includes a stop STO, which can be an aperture stop or a field stop. Disposed between the prism 8 and the first lens 1, the stop STO can better control the amount of light, improve the overall brightness of the image, ensure that the imaging surface has a large light-collecting area, and enhance the imaging effect.

[0044] In some embodiments, the prism 8 is an isosceles right-angle prism, so that the isosceles right-angle prism can deflect the light path by 90 degrees. If the incident direction of the prism 8 is set along the thickness direction of the carrier, then the imaging lens 10 can be set along the width or length direction of the carrier, which is beneficial to reducing the thickness of the carrier.

[0045] In the solution of the present application, imaging lens 10 satisfies the following condition: 4mm≤f*ImgH / f1≤8mm; where f is the effective focal length of imaging lens 10, ImgH is half the image height corresponding to the maximum field of view of imaging lens 10, and f1 is the effective focal length of first lens element 1. In other words, the result of multiplying f by ImgH and then dividing by f1 can be any value within the interval [4, 8], for example, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, and so on.

[0046] This arrangement allows for a reasonable distribution of optical power, achieving a telephoto characteristic. Through this design, the imaging lens 10 can achieve high resolution while also meeting the requirements of being lightweight and thin, thereby improving the portability of the imaging lens 10. Preferably, the imaging lens 10 satisfies the following condition: 4.344 mm ≤ f*ImgH / f1 ≤ 7.857 mm.

[0047] In certain embodiments, the imaging lens 10 further satisfies the following condition: 1 ≤ TL / EPD ≤ 3, where TL is the distance from the object-side surface S1 of the first lens element 1 to the imaging surface of the imaging lens 10 on the optical axis OO', and EPD is the entrance pupil diameter of the imaging lens 10. In other words, the result of dividing TL by EPD can be any value in the interval [1, 3], for example, 1, 1.2, 1.6, 2, 2.4, 2.8, 3, and so on.

[0048] When the imaging lens 10 satisfies the conditional formula 1≤TL / EPD≤3, the overall length of the imaging lens 10 can be reduced, the amount of light entering can be increased, and the overall brightness of the image can be improved. Preferably, the imaging lens 10 satisfies the conditional formula: 1.865≤TL / EPD≤2.787.

[0049] In some embodiments, the imaging lens 10 further satisfies the following condition: 0≤EPD / f≤1. In other words, the result of dividing EPD by f can be any value within the interval [0, 1], for example, 0, 0.2, 0.4, 0.6, 0.8, 1, etc.

[0050] When the imaging lens 10 satisfies the condition 0≤EPD / f≤1, the light transmission and image plane back shift can be balanced to achieve large aperture and telephoto characteristics. Preferably, the imaging lens 10 satisfies the condition 0.357≤EPD / f≤0.51.

[0051] In some embodiments, the imaging lens 10 further satisfies the following condition: -1 ≤MVd / f≤6mm -1 MVd is the average Abbe number of the first lens element 1 to the seventh lens element 7. In other words, the result of dividing MVd by f can be any value in the interval [1, 6]. For example, the value can also be 1, 2, 3, 4, 5, 6, etc.

[0052] Imaging lens 10 satisfies the conditional expression 1mm -1 ≤MVd / f≤6mm -1, chromatic aberration can be balanced. It is understandable that high Abbe numbers and low Abbe numbers correspond to different refractive indices, and telephoto characteristics and optical imaging performance can be achieved through different material combinations. The Abbe numbers from the first lens 1 to the seventh lens 7 are different, that is, the refractive indices of the first lens 1 to the seventh lens 7 are not the same. By selecting the specifications of the lenses and setting the average value of the Abbe numbers of the first lens 1 to the seventh lens 7 within the above range, better telephoto characteristics and optical imaging performance can be achieved through different combinations. Preferably, the imaging lens 10 satisfies the conditional formula: 1.862mm -1 ≤MVd / f≤4.431mm -1 .

[0053] In some embodiments, the imaging lens 10 further satisfies the following condition: 1 deg / mm ≤ FOV / f ≤ 6 deg / mm, where FOV is the maximum field of view of the imaging lens 10. In other words, the result of dividing FOV by f can be any value within the interval [1, 6], for example, 1, 2, 3, 4, 5, 6, and so on.

[0054] When the imaging lens 10 satisfies the condition 1deg / mm ≤ FOV / f ≤ 6deg / mm, the field of view angle can be controlled within a certain range, allowing the focal length of the imaging lens 10 to reach a telephoto distance, thus achieving a telephoto function. Preferably, the imaging lens 10 satisfies the condition 1.134 ≤ FOV / f ≤ 5.051.

[0055] In some embodiments, the imaging lens 10 further satisfies the following condition: -1 ≤ET1 / (CT1*f)≤0.5mm -1 Where ET1 is the thickness of the maximum effective radius edge of the first lens element 1, and CT1 is the distance along the optical axis from the object-side surface S1 to the image-side surface F1 of the first lens element 1. In other words, the result of dividing ET1 by CT1 and then by f can be any value within the interval [0, 0.5]. For example, this value can also be 0, 0.1, 0.2, 0.3, 0.4, 0.5, and so on.

[0056] Imaging lens 10 satisfies the conditional expression 0mm -1 ≤ET1 / (CT1*f)≤0.5mm -1 When , it is beneficial to the formation of the first lens 1 and to achieve telephoto characteristics. Preferably, the imaging lens 10 satisfies the conditional formula: 0.018mm -1 ≤ET1 / (CT1*f)≤0.068mm -1 .

[0057] In some embodiments, the imaging lens 10 further satisfies the following condition: 0≤ET7 / (CT7*f)≤1mm -1Wherein, ET7 is the edge thickness of the maximum effective radius of the seventh lens element 7, and CT7 is the distance from the object-side surface S7 to the image-side surface F7 of the seventh lens element 7 on the optical axis OO'. In other words, the result of dividing ET7 by CT7 and then by f can be any value in the interval [0, 1]. For example, this value can also be 0, 0.2, 0.4, 0.6, 0.8, 1, etc.

[0058] The imaging lens 10 satisfies the condition 0≤ET7 / (CT7*f)≤1mm -1 When , it is beneficial to form the seventh lens element 7 and realize the telephoto characteristic. Preferably, the imaging lens 10 satisfies the conditional formula: 0.038≤ET7 / (CT7*f)≤0.118.

[0059] In certain embodiments, the imaging lens 10 further satisfies the following condition: 0 ≤ SAG32 / CT34 ≤ 1; where SAG32 is the distance along the optical axis from the intersection of the image-side surface F3 of the third lens element 3 and the optical axis to the edge of the optically effective area of the image-side surface F3 of the third lens element 3, and CT34 is the distance along the optical axis from the image-side surface F3 of the third lens element 3 to the object-side surface S4 of the fourth lens element 4. In other words, the result of dividing SAG32 by CT34 can be any value within the interval [0, 1], for example, 0, 0.2, 0.4, 0.6, 0.8, 1, and so on.

[0060] When imaging lens 10 satisfies the conditional equation 0 ≤ SAG32 / CT34 ≤ 1, a rational layout of the optical structure can mitigate changes in the direction of light entering imaging lens 10, helping to reduce the intensity of stray light, lower sensitivity to system performance variations, and improve the yield rate of the third lens 3. Preferably, imaging lens 10 satisfies the conditional equation: 0.167 ≤ SAG32 / CT34 ≤ 0.411.

[0061] In certain embodiments, the imaging lens 10 further satisfies the following condition: -1 ≤ SAG41 / CT34 ≤ 0; where SAG41 is the distance along the optical axis from the intersection of the object-side surface S4 of the fourth lens element 4 and the optical axis to the edge of the optically effective area of the object-side surface S4 of the fourth lens element 4, and CT34 is the distance along the optical axis from the image-side surface F3 of the third lens element 3 to the object-side surface S4 of the fourth lens element 4. In other words, the result of dividing SAG41 by CT34 can be any value within the interval [-1, 0], for example, -1, -0.8, -0.6, -0.4, -0.2, 0, and so on.

[0062] When imaging lens 10 satisfies the conditional equation -1 ≤ SAG41 / CT34 ≤ 0, a rational layout of the optical structure can mitigate changes in the direction of light entering imaging lens 10, helping to reduce light intensity, lower sensitivity to system performance variations, and improve the yield rate of fourth lens 4 in production. Preferably, imaging lens 10 satisfies the conditional equation: -0.374 ≤ SAG41 / CT34 ≤ -0.219.

[0063] In some embodiments, the imaging lens 10 further satisfies the following condition: 2 ≤ TL / ImgH ≤ 5, where TL is the distance from the object-side surface S1 of the first lens element 1 to the imaging plane along the optical axis OO'. In other words, the result of dividing TL by ImgH can be any value within the interval [2, 5]. For example, this value can be 2, 2.5, 3, 3.5, 4, 4.5, 5, and so on.

[0064] When the imaging lens 10 satisfies the conditional formula 2≤TL / IMGH≤5, it is beneficial to achieve miniaturization of the camera lens assembly. Preferably, the imaging lens 10 satisfies the conditional formula: 2.971≤TL / ImgH≤4.806.

[0065] In some embodiments, the prism 8 , the first lens 1 , the second lens 2 , the third lens 3 , the fourth lens 4 , the fifth lens 5 , the sixth lens 6 , and the seventh lens 7 are made of plastic or glass.

[0066] The cost of plastic lenses is relatively low, which is beneficial to reducing the cost of the imaging lens 10 ; and the glass lens is not easily affected by thermal expansion and contraction due to changes in ambient temperature, which makes the imaging quality of the imaging lens 10 relatively stable.

[0067] In some embodiments, at least one surface of the first lens 1, the second lens 2, the third lens 3, the fourth lens 4, the fifth lens 5, the sixth lens 6, and the seventh lens 7 is aspherical. The shape of the aspherical surface is determined by the following formula:

[0068]

[0069] Where Z is the longitudinal distance from any point on the aspheric surface to the vertex of the surface, r is the distance from any point on the aspheric surface to the optical axis, c is the vertex curvature (the inverse of the curvature radius), k is the cone constant, and Ai is the correction coefficient of the i-th order aspheric surface.

[0070] In this way, the imaging lens 10 can effectively reduce the total length of the imaging lens 10 through the curvature radius and aspheric coefficient of each lens surface, and can effectively correct aberrations to improve imaging quality.

[0071] To further illustrate the solution of the present application, the structures and parameters of the imaging lens 10 according to seven embodiments are shown below.

[0072] First embodiment

[0073] See also Figure 1 From the object side to the image side, the imaging lens 10 of the first embodiment includes, along the optical axis, in sequence: a prism 8, a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5, a sixth lens 6, a seventh lens 7 and an infrared filter 9.

[0074] The prism 8 is an isosceles right-angle prism, which is used to change the propagation direction of light so that the light entering the prism 8 perpendicular to the optical axis is incident on the first lens 1 parallel to the optical axis.

[0075] The first lens element 1 has positive refractive power, with its object-side surface S1 being convex at the near optical axis OO', its image-side surface F1 being concave at the near optical axis OO', and both the object-side surface S1 and the image-side surface F1 being aspherical. The second lens element 2 has positive refractive power, with its object-side surface S2 being convex at the near optical axis OO', its image-side surface F2 being concave at the near optical axis OO', and both the object-side surface S2 and the image-side surface F2 being aspherical. The third lens element 3 has negative refractive power, with its object-side surface S3 being convex at the near optical axis OO', its image-side surface F3 being concave at the near optical axis OO', and both the object-side surface S3 and the image-side surface F3 being aspherical. The fourth lens element 4 has negative refractive power, with its object-side surface S4 being concave at the near optical axis OO', its image-side surface F4 being convex at the near optical axis OO', and both the object-side surface S4 and the image-side surface F4 being aspherical. The fifth lens element 5 has negative refractive power, with its object-side surface S5 being convex at the near optical axis OO' and its image-side surface F5 being concave at the near optical axis OO', and both the object-side surface S5 and the image-side surface F5 being aspherical. The sixth lens element 6 has positive refractive power, with its object-side surface S6 being convex at the near optical axis OO' and its image-side surface F6 being concave at the near optical axis OO', and both the object-side surface S6 and the image-side surface F6 being aspherical. The seventh lens element 7 has negative refractive power, with its object-side surface S7 being concave at the near optical axis OO' and its image-side surface F7 being convex at the near optical axis OO', and both the object-side surface S7 and the image-side surface F7 being aspherical.

[0076] The infrared filter 9 is made of glass and is disposed between the seventh lens element 7 and the imaging plane without affecting the focal length of the imaging lens 10. The effective focal length of the imaging lens 10 is f = 8.36 mm, the aperture number FNO of the imaging lens 10 is FNO = 2.8, and the field of view FOV of the imaging lens 10 is 36.68 degrees. The imaging lens 10 meets the conditions in the following table:

[0077] Table 1

[0078]

[0079]

[0080] The surface numbers of each surface in Table 1 are arranged in sequence from the object side to the image side. The same is true for the other embodiments below, which will not be repeated here.

[0081] Table 2 gives the conic coefficient K and the higher-order correction coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 for the surfaces numbered 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, and 18 in Table 1. These coefficients are derived from the above-mentioned aspheric surface formula (10):

[0082] Table 2

[0083]

[0084]

[0085] Figure 2 (a) is a diagram of the longitudinal spherical aberration of the first embodiment, showing the deviation of light of different wavelengths from the focal point after passing through the imaging lens 10. The ordinate of the diagram represents the normalized pupil coordinate (PUC) from the pupil center to the pupil edge, while the abscissa represents the distance (in mm) from the imaging plane to the intersection of the light and the optical axis OO'. Figure 2 The wavelengths of the light used in (a) are 470.000nm, 510.000nm, 587.56nm, 610.000nm, and 650.000nm, respectively. After the five light rays are imaged through the imaging lens 10, the focus offsets for different fields of view are within a range of ±0.1mm. As can be seen from the longitudinal spherical aberration diagram of the first embodiment, the degree of convergence focus deviation for each wavelength of light in the first embodiment is consistent, effectively suppressing any speckle or color halation in the image. This results in minimal spherical aberration and excellent image quality.

[0086] Figure 2 (b) shows the astigmatic field curves of the imaging lens 10 of the first embodiment, where the S curve represents the sagittal field curvature at 587.56 nm, and the T curve represents the meridional field curvature at 587.56 nm. The focus shifts of the sagittal and meridional image planes are both within ±0.025 mm. Figure 2 (b) It can be seen that the field curvature of the imaging lens 10 of the first embodiment is small, the field curvature and astigmatism in each field of view (especially the edge field of view) are well corrected, and clear images are obtained at the center and edges of the field of view.

[0087] Figure 2(c) is a distortion diagram of the imaging lens 10 of the first embodiment. The diagram shows that after the light with a wavelength of 587.56nm passes through the imaging lens 10, its distortion rate is within the range of ±5.0%. Figure 2 (c) It can be seen that the image deformation caused by the main beam is small, and the imaging quality of the imaging lens 10 is excellent.

[0088] Second embodiment

[0089] See also Figure 3 From the object side to the image side, the imaging lens 10 of the second embodiment includes, along the optical axis, a prism 8, a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5, a sixth lens 6, a seventh lens 7, and an infrared filter 9. The prism 8 is an isosceles right-angle prism that changes the propagation direction of light so that light entering the prism 8 perpendicular to the optical axis is emitted parallel to the optical axis toward the first lens 1.

[0090] The first lens element 1 has positive refractive power, its object-side surface S1 is convex at the near optical axis OO', its image-side surface F1 is convex at the near optical axis OO', and both the object-side surface S1 and the image-side surface F1 are aspherical. The second lens element 2 has positive refractive power, its object-side surface S2 is convex at the near optical axis OO', its image-side surface F2 is concave at the near optical axis OO', and both the object-side surface S2 and the image-side surface F2 are aspherical. The third lens element 3 has negative refractive power, its object-side surface S3 is concave at the near optical axis OO', its image-side surface F3 is convex at the near optical axis OO', and both the object-side surface S3 and the image-side surface F3 are aspherical. The fourth lens element 4 has negative refractive power, its object-side surface S4 is concave at the near optical axis OO', its image-side surface F4 is concave at the near optical axis OO', and both the object-side surface S4 and the image-side surface F4 are aspherical. The fifth lens element 5 has positive refractive power, with its object-side surface S5 being concave at the near optical axis OO', and its image-side surface F5 being convex at the near optical axis OO', and both the object-side surface S5 and the image-side surface F5 being aspherical. The sixth lens element 6 has negative refractive power, with its object-side surface S6 being convex at the near optical axis OO', and its image-side surface F6 being concave at the near optical axis OO', and both the object-side surface S6 and the image-side surface F6 being aspherical. The seventh lens element 7 has positive refractive power, with its object-side surface S7 being concave at the near optical axis OO', and its image-side surface F7 being convex at the near optical axis OO', and both the object-side surface S7 and the image-side surface F7 being aspherical.

[0091] The infrared filter 9 is made of glass and is disposed between the seventh lens element 7 and the imaging plane without affecting the focal length of the imaging lens 10. The effective focal length of the imaging lens 10 is f = 13.23 mm, the aperture number FNO of the imaging lens 10 is FNO = 2.12, and the field of view FOV of the imaging lens 10 is 26.87 degrees. The imaging lens 10 meets the conditions in the following table:

[0092] Table 3

[0093]

[0094] Table 4 gives the conic coefficient K and the higher-order correction coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 for the surfaces numbered 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, and 18 in Table 3. These coefficients are derived from the above-mentioned aspheric surface formula (10):

[0095] Table 4

[0096]

[0097]

[0098] Depend on Figure 4 As can be seen from the aberration diagram in , the longitudinal spherical aberration, field curvature and distortion of the imaging lens 10 are all well controlled, so that the optical imaging system 100 of this embodiment has good imaging quality.

[0099] Third embodiment

[0100] See also Figure 5 From the object side to the image side, the imaging lens 10 of the third embodiment includes, in order along the optical axis, a prism 8, a first lens element 1, a second lens element 2, a third lens element 3, a fourth lens element 4, a fifth lens element 5, a sixth lens element 6, a seventh lens element 7, and an infrared filter 9. The prism 8 is an isosceles right-angle prism that changes the propagation direction of light so that light entering the prism 8 perpendicular to the optical axis is emitted parallel to the optical axis toward the first lens element 1.

[0101] The first lens element 1 has positive refractive power, with its object-side surface S1 being convex at the near optical axis OO', its image-side surface F1 being convex at the near optical axis OO', and both the object-side surface S1 and the image-side surface F1 being aspherical. The second lens element 2 has negative refractive power, with its object-side surface S2 being convex at the near optical axis OO', its image-side surface F2 being concave at the near optical axis OO', and both the object-side surface S2 and the image-side surface F2 being aspherical. The third lens element 3 has negative refractive power, with its object-side surface S3 being convex at the near optical axis OO', its image-side surface F3 being concave at the near optical axis OO', and both the object-side surface S3 and the image-side surface F3 being aspherical. The fourth lens element 4 has negative refractive power, with its object-side surface S4 being concave at the near optical axis OO', its image-side surface F4 being concave at the near optical axis OO', and both the object-side surface S4 and the image-side surface F4 being aspherical. The fifth lens element 5 has positive refractive power, its object-side surface S5 is concave at the near optical axis OO', its image-side surface F5 is convex at the near optical axis OO', and both the object-side surface S5 and the image-side surface F5 are aspherical. The sixth lens element 6 has positive refractive power, its object-side surface S6 is concave at the near optical axis OO', its image-side surface F6 is convex at the near optical axis OO', and both the object-side surface S6 and the image-side surface F6 are aspherical. The seventh lens element 7 has negative refractive power, its object-side surface S7 is concave at the near optical axis OO', its image-side surface F7 is concave at the near optical axis OO', and both the object-side surface S7 and the image-side surface F7 are aspherical.

[0102] The infrared filter 9 is made of glass and is disposed between the seventh lens element 7 and the imaging plane without affecting the focal length of the imaging lens 10. The effective focal length of the imaging lens 10 is f = 11.69 mm, the aperture number FNO of the imaging lens 10 is FNO = 2.14, and the field of view FOV of the imaging lens 10 is 33.76 degrees. The imaging lens 10 meets the conditions in the following table:

[0103] Table 5

[0104]

[0105] Table 6 gives the conic coefficient K and the higher-order correction coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 for the surfaces numbered 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, and 18 in Table 5. These coefficients are derived from the above-mentioned aspheric surface formula (10):

[0106] Table 6

[0107]

[0108]

[0109] Depend on Figure 6As can be seen from the aberration diagram in , the longitudinal spherical aberration, field curvature and distortion of the imaging lens 10 are all well controlled, so that the optical imaging system 100 of this embodiment has good imaging quality.

[0110] Fourth embodiment

[0111] See also Figure 7 From the object side to the image side, the imaging lens 10 of the first embodiment includes, in order along the optical axis, a prism 8, a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5, a sixth lens 6, a seventh lens 7, and an infrared filter 9. The prism 8 is an isosceles right-angle prism that changes the propagation direction of light so that light entering the prism 8 perpendicular to the optical axis is emitted parallel to the optical axis toward the first lens 1.

[0112] The first lens element 1 has positive refractive power, with its object-side surface S1 being convex at the near optical axis OO', its image-side surface F1 being convex at the near optical axis OO', and both the object-side surface S1 and the image-side surface F1 being aspherical. The second lens element 2 has negative refractive power, with its object-side surface S2 being concave at the near optical axis OO', its image-side surface F2 being convex at the near optical axis OO', and both the object-side surface S2 and the image-side surface F2 being aspherical. The third lens element 3 has positive refractive power, with its object-side surface S3 being concave at the near optical axis OO', its image-side surface F3 being convex at the near optical axis OO', and both the object-side surface S3 and the image-side surface F3 being aspherical. The fourth lens element 4 has negative refractive power, with its object-side surface S4 being convex at the near optical axis OO', its image-side surface F4 being concave at the near optical axis OO', and both the object-side surface S4 and the image-side surface F4 being aspherical. The fifth lens element 5 has positive refractive power, with its object-side surface S5 being concave at the near optical axis OO', and its image-side surface F5 being convex at the near optical axis OO', and both the object-side surface S5 and the image-side surface F5 being aspherical. The sixth lens element 6 has negative refractive power, with its object-side surface S6 being concave at the near optical axis OO', and its image-side surface F6 being concave at the near optical axis OO', and both the object-side surface S6 and the image-side surface F6 being aspherical. The seventh lens element 7 has positive refractive power, with its object-side surface S7 being concave at the near optical axis OO', and its image-side surface F7 being convex at the near optical axis OO', and both the object-side surface S7 and the image-side surface F7 being aspherical.

[0113] The infrared filter 9 is made of glass and is disposed between the seventh lens element 7 and the imaging plane without affecting the focal length of the imaging lens 10. The effective focal length of the imaging lens 10 is f = 11.00 mm, the aperture number FNO of the imaging lens 10 is 1.96, and the field of view FOV of the imaging lens 10 is 26.21 degrees. The imaging lens 10 meets the conditions in the following table:

[0114] Table 7

[0115]

[0116] Table 8 gives the conic coefficient K and the higher-order correction coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 for the surfaces numbered 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, and 18 in Table 7. These coefficients are derived from the above-mentioned aspheric surface formula (10):

[0117] Table 8

[0118]

[0119] Depend on Figure 8 As can be seen from the aberration diagram in , the longitudinal spherical aberration, field curvature and distortion of the imaging lens 10 are all well controlled, so that the optical imaging system 100 of this embodiment has good imaging quality.

[0120] Fifth embodiment

[0121] See also Figure 9 From the object side to the image side, the imaging lens 10 of the fifth embodiment includes, in order along the optical axis, a prism 8, a first lens element 1, a second lens element 2, a third lens element 3, a fourth lens element 4, a fifth lens element 5, a sixth lens element 6, a seventh lens element 7, and an infrared filter 9. The prism 8 is an isosceles right-angle prism that changes the propagation direction of light so that light entering the prism 8 perpendicular to the optical axis is emitted parallel to the optical axis toward the first lens element 1.

[0122] The first lens element 1 has positive refractive power, with its object-side surface S1 being convex at the near optical axis OO', its image-side surface F1 being convex at the near optical axis OO', and both the object-side surface S1 and the image-side surface F1 being aspherical. The second lens element 2 has negative refractive power, with its object-side surface S2 being convex at the near optical axis OO', its image-side surface F2 being concave at the near optical axis OO', and both the object-side surface S2 and the image-side surface F2 being aspherical. The third lens element 3 has positive refractive power, with its object-side surface S3 being convex at the near optical axis OO', its image-side surface F3 being concave at the near optical axis OO', and both the object-side surface S3 and the image-side surface F3 being aspherical. The fourth lens element 4 has negative refractive power, with its object-side surface S4 being concave at the near optical axis OO', its image-side surface F4 being concave at the near optical axis OO', and both the object-side surface S4 and the image-side surface F4 being aspherical. The fifth lens element 5 has positive refractive power, with its object-side surface S5 being concave at the near optical axis OO', and its image-side surface F5 being convex at the near optical axis OO', and both the object-side surface S5 and the image-side surface F5 being aspherical. The sixth lens element 6 has negative refractive power, with its object-side surface S6 being concave at the near optical axis OO', and its image-side surface F6 being convex at the near optical axis OO', and both the object-side surface S6 and the image-side surface F6 being aspherical. The seventh lens element 7 has positive refractive power, with its object-side surface S7 being concave at the near optical axis OO', and its image-side surface F7 being convex at the near optical axis OO', and both the object-side surface S7 and the image-side surface F7 being aspherical.

[0123] The infrared filter 9 is made of glass and is disposed between the seventh lens element 7 and the imaging plane without affecting the focal length of the imaging lens 10. The effective focal length of the imaging lens 10 is f = 18.80 mm, the aperture number FNO of the imaging lens 10 is FNO = 2.35, and the field of view FOV of the imaging lens 10 is 21.32 degrees. The imaging lens 10 meets the conditions in the following table:

[0124] Table 9

[0125]

[0126] Table 10 gives the conic coefficient K and the higher-order correction coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 for the surfaces numbered 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, and 18 in Table 9. These coefficients are derived from the above-mentioned aspheric surface formula (10):

[0127] Table 10

[0128]

[0129] Depend on Figure 10 As can be seen from the aberration diagram in , the longitudinal spherical aberration, field curvature and distortion of the imaging lens 10 are all well controlled, so that the optical imaging system 100 of this embodiment has good imaging quality.

[0130] Sixth embodiment

[0131] See also Figure 11 From the object side to the image side, the imaging lens 10 of the sixth embodiment includes, in order along the optical axis, a prism 8, a first lens element 1, a second lens element 2, a third lens element 3, a fourth lens element 4, a fifth lens element 5, a sixth lens element 6, a seventh lens element 7, and an infrared filter 9. Prism 8 is an isosceles right-angle prism that changes the direction of light so that light entering prism 8 perpendicular to the optical axis is emitted parallel to the optical axis toward first lens element 1.

[0132] The first lens element 1 has positive refractive power, with its object-side surface S1 being convex at the near optical axis OO', and its image-side surface F1 being concave at the near optical axis OO', and both the object-side surface S1 and the image-side surface F1 are aspherical. The second lens element 2 has negative refractive power, with its object-side surface S2 being convex at the near optical axis OO', and its image-side surface F2 being concave at the near optical axis OO', and both the object-side surface S2 and the image-side surface F2 are aspherical. The third lens element 3 has negative refractive power, with its object-side surface S3 being convex at the near optical axis OO', and its image-side surface F3 being concave at the near optical axis OO', and both the object-side surface S3 and the image-side surface F3 are aspherical. The fourth lens element 4 has positive refractive power, with its object-side surface S4 being concave at the near optical axis OO', and its image-side surface F4 being convex at the near optical axis OO', and both the object-side surface S4 and the image-side surface F4 are aspherical. The fifth lens element 5 has negative refractive power, with its object-side surface S5 being concave at the near optical axis OO', and its image-side surface F5 being convex at the near optical axis OO', and both the object-side surface S5 and the image-side surface F5 being aspherical. The sixth lens element 6 has positive refractive power, with its object-side surface S6 being convex at the near optical axis OO', and its image-side surface F6 being concave at the near optical axis OO', and both the object-side surface S6 and the image-side surface F6 being aspherical. The seventh lens element 7 has positive refractive power, with its object-side surface S7 being convex at the near optical axis OO', and its image-side surface F7 being convex at the near optical axis OO', and both the object-side surface S7 and the image-side surface F7 being aspherical.

[0133] The infrared filter 9 is made of glass and is disposed between the seventh lens element 7 and the imaging plane without affecting the focal length of the imaging lens 10. The effective focal length of the imaging lens 10 is f = 8.50 mm, the aperture number FNO of the imaging lens 10 is FNO = 2.39, and the field of view FOV of the imaging lens 10 is 42.92 degrees. The imaging lens 10 meets the conditions in the following table:

[0134] Table 11

[0135]

[0136] Table 12 gives the conic coefficient K and the higher-order correction coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 for the surfaces numbered 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, and 18 in Table 11. These coefficients are derived from the above-mentioned aspheric surface formula (10):

[0137] Table 12

[0138]

[0139] Depend on Figure 12 As can be seen from the aberration diagram in , the longitudinal spherical aberration, field curvature and distortion of the imaging lens 10 are all well controlled, so that the optical imaging system 100 of this embodiment has good imaging quality.

[0140] Seventh embodiment

[0141] See also Figure 13 From the object side to the image side, the imaging lens 10 of the seventh embodiment includes, in order along the optical axis, a prism 8, a first lens element 1, a second lens element 2, a third lens element 3, a fourth lens element 4, a fifth lens element 5, a sixth lens element 6, a seventh lens element 7, and an infrared filter 9. The prism 8 is an isosceles right-angle prism that changes the propagation direction of light so that light entering the prism 8 perpendicular to the optical axis is emitted parallel to the optical axis toward the first lens element 1.

[0142] The first lens element 1 has positive refractive power, with its object-side surface S1 being convex at the near optical axis OO', its image-side surface F1 being convex at the near optical axis OO', and both the object-side surface S1 and the image-side surface F1 being aspherical. The second lens element 2 has negative refractive power, with its object-side surface S2 being convex at the near optical axis OO', its image-side surface F2 being concave at the near optical axis OO', and both the object-side surface S2 and the image-side surface F2 being aspherical. The third lens element 3 has negative refractive power, with its object-side surface S3 being convex at the near optical axis OO', its image-side surface F3 being concave at the near optical axis OO', and both the object-side surface S3 and the image-side surface F3 being aspherical. The fourth lens element 4 has negative refractive power, with its object-side surface S4 being convex at the near optical axis OO', its image-side surface F4 being concave at the near optical axis OO', and both the object-side surface S4 and the image-side surface F4 being aspherical. The fifth lens element 5 has negative refractive power, with its object-side surface S5 being concave at the near optical axis OO', and its image-side surface F5 being convex at the near optical axis OO', and both the object-side surface S5 and the image-side surface F5 being aspherical. The sixth lens element 6 has negative refractive power, with its object-side surface S6 being concave at the near optical axis OO', and its image-side surface F6 being convex at the near optical axis OO', and both the object-side surface S6 and the image-side surface F6 being aspherical. The seventh lens element 7 has positive refractive power, with its object-side surface S7 being convex at the near optical axis OO', and its image-side surface F7 being convex at the near optical axis OO', and both the object-side surface S7 and the image-side surface F7 being aspherical.

[0143] The infrared filter 9 is made of glass and is disposed between the seventh lens element 7 and the imaging plane without affecting the focal length of the imaging lens 10. The effective focal length of the imaging lens 10 is f = 17.70 mm, the aperture number FNO of the imaging lens 10 is 2.29, and the field of view FOV of the imaging lens 10 is 21.39 degrees. The imaging lens 10 meets the conditions in the following table:

[0144] Table 13

[0145]

[0146] Table 14 gives the conic coefficient K and the higher-order correction coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 for the surfaces numbered 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, and 18 in Table 13. These coefficients are derived from the above-mentioned aspheric surface formula (10):

[0147] Table 14

[0148]

[0149] Depend on Figure 14 As can be seen from the aberration diagram in , the longitudinal spherical aberration, field curvature and distortion of the imaging lens 10 are all well controlled, so that the optical imaging system 100 of this embodiment has good imaging quality.

[0150] The characteristics of the above seven embodiments are summarized as follows:

[0151] Table 15

[0152]

[0153]

[0154] Table 16

[0155]

[0156] The imaging module of an embodiment of the present invention includes the imaging lens 10 of any of the above-described embodiments and an electronic photosensitive element. The electronic photosensitive element is disposed on the image side of the imaging lens 10. Optionally, the electronic photosensitive element can employ a complementary metal oxide semiconductor (CMOS) image sensor or a charge-coupled device (CCD) image sensor. The imaging module of an embodiment of the present invention utilizes a reasonable lens configuration to ensure that the imaging lens 10 not only has high imaging quality but also achieves ultra-thinness and lightweighting.

[0157] The electronic device includes a housing and the imaging module of the aforementioned embodiment. The imaging module is mounted within the housing and exposed from the housing to capture images. The electronic device of this embodiment of the present invention utilizes a rational lens configuration to ensure that the imaging lens 10 not only has high imaging quality but also achieves an ultra-thin and lightweight design. Furthermore, the housing provides protection for the imaging lens 10.

[0158] The electronic devices of the embodiments of the present invention include, but are not limited to, miniaturized smart phones, mobile phones, PDAs (Personal Digital Assistants), game consoles, PCs and other information terminal devices, and home appliances with additional camera functions.

[0159] Throughout this specification, reference to terms such as "embodiment" or "example" indicates that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0160] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. An imaging lens, characterized in that: There are only seven lenses with optical power. The imaging lens includes the following from the object side to the image side along the optical axis: prism; a first lens having positive refractive power, wherein the object-side surface of the first lens is convex near the optical axis; a second lens having refractive power; a third lens having refractive power; a fourth lens having refractive power; a fifth lens having refractive power; a sixth lens having refractive power; a seventh lens having refractive power; At least one surface of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens is aspherical; The imaging lens satisfies the conditional formula: 4.344mm≤f*ImgH / f1≤7.857mm; Wherein, f is the effective focal length of the imaging lens, ImgH is half of the image height corresponding to the maximum field angle of the imaging lens, and f1 is the effective focal length of the first lens; The imaging lens satisfies the following conditional formula: 2.971≤TL / ImgH≤4.806; Wherein, TL is the distance from the object side of the first lens to the imaging plane on the optical axis; The imaging lens satisfies the following conditional formula: 0.357≤EPD / f≤0.51; Wherein, EPD is the entrance pupil diameter of the imaging lens.

2. The imaging lens according to claim 1, wherein: The imaging lens satisfies the following conditional formula: 1.865≤TL / EPD≤2.787; Wherein, TL is the distance from the object side surface of the first lens to the imaging surface of the imaging lens on the optical axis, and EPD is the entrance pupil diameter of the imaging lens.

3. The imaging lens according to claim 1, wherein: The imaging lens satisfies the following conditional formula: 1mm -1 ≤MVd / f≤6mm -1 ; Here, MVd is the average value of the Abbe numbers of the first to seventh lenses.

4. The imaging lens according to claim 1, wherein: The imaging lens satisfies the following conditional formula: 1.134deg / mm≤FOV / f≤5.051deg / mm; Wherein, FOV is the maximum field of view of the imaging lens.

5. The imaging lens according to claim 1, wherein: The imaging lens satisfies the following conditional formula: 0.018mm -1 ≤ET1 / (CT1*f)≤0.068mm -1 ; Wherein, ET1 is the thickness of the maximum effective radius edge of the first lens, and CT1 is the distance from the object side surface of the first lens to the image side surface of the first lens on the optical axis.

6. The imaging lens according to claim 1, wherein: The imaging lens satisfies the following conditional formula: 0.038mm -1 ≤ET7 / (CT7*f)≤1mm -1 ; Wherein, ET7 is the thickness of the maximum effective radius edge of the seventh lens, and CT7 is the distance from the object side surface of the seventh lens to the image side surface of the seventh lens on the optical axis.

7. The imaging lens according to claim 1, wherein: The imaging lens satisfies the following conditional formula: 0.167≤SAG32 / CT34≤0.411; Among them, SAG32 is the distance from the intersection of the image side surface of the third lens and the optical axis to the edge of the optically effective area of the image side surface of the third lens in the direction of the optical axis, and CT34 is the distance from the image side surface of the third lens to the object side surface of the fourth lens on the optical axis.

8. The imaging lens according to claim 1, wherein: The imaging lens satisfies the following conditional formula: -0.374≤SAG41 / CT34≤-0.219; Among them, SAG41 is the distance from the intersection of the object side surface of the fourth lens and the optical axis to the edge of the optically effective area of the object side surface of the fourth lens in the direction of the optical axis, and CT34 is the distance from the image side surface of the third lens to the object side surface of the fourth lens on the optical axis.

9. An imaging module, characterized in that: The imaging module includes: The imaging lens according to any one of claims 1 to 8; and An electronic photosensitive element is arranged on the image side of the imaging lens.

10. An electronic device, characterized in that: The electronic device comprises: housing; and The imaging module described in claim 9 is mounted on the housing.

Images