Optical imaging lens

Abstract

The present application discloses an optical imaging lens, which includes a lens barrel and a lens group and a support element group accommodated in the lens barrel. The lens group is composed of a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens having optical power arranged in sequence from the object side to the image side along the optical axis; the support element group includes a first support element, and the first support element is placed between the first lens and the second lens and contacts the image side surface of the first lens; the optical imaging lens satisfies: 2.55 < d0m / EPD < 2.75, 1.50 < d0s / d1s < 1.95, 1.45 < D0m / D0s < 1.80 and 0.90 < EP01 / CT1 < 1.15.

Description

Technical Field

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

[0002] In recent years, with the ever-changing consumer demands, the requirements for optical imaging lenses have gradually become more complex and diverse. In different application scenarios, the performance of optical imaging lenses varies.

[0003] In a seven-piece optical imaging lens, on the premise of ensuring a large aperture for the optical imaging lens, after light enters the optical imaging lens, the thickness, aperture, etc. of the lens will affect the progress of light and the contribution of light at a specific angle, and uneven thickness will cause aberration, affecting the clarity and resolution of the optical imaging lens, and thus affecting the imaging quality of the optical imaging lens. Summary of the Invention

[0004] This application provides an optical imaging lens, including a lens barrel and a lens group and a support element group accommodated in the lens barrel. The lens group is composed of a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens with optical power arranged in sequence from the object side to the image side along the optical axis; the support element group includes a first support element, and the first support element is placed between the first lens and the second lens and contacts the image side surface of the first lens; the optical imaging lens satisfies: 2.55 < d0m / EPD < 2.75, 1.50 < d0s / d1s < 1.95, 1.45 < D0m / D0s < 1.80, and 0.90 < EP01 / CT1 < 1.15, where d0s is the inner diameter of the object side end face of the lens barrel, d0m is the inner diameter of the image side end face of the lens barrel, D0s is the outer diameter of the object side end face of the lens barrel, D0m is the outer diameter of the image side end face of the lens barrel, EPD is the entrance pupil diameter of the optical imaging lens, EP01 is the distance along the optical axis between the object side end face of the lens barrel and the object side surface of the first support element, CT1 is the central thickness of the first lens on the optical axis, and d1s is the inner diameter of the object side surface of the first support element.

[0005] According to an exemplary embodiment of the present application, the optical imaging lens satisfies: 2.80 < d0s / DT11 < 3.65, where DT11 is the effective semi-aperture of the object side surface of the first lens.

[0006] According to an exemplary embodiment of the present application, the optical imaging lens satisfies: 3.35 < d1s / CT1 ≤ 4.10.

[0007] According to an exemplary embodiment of the present application, the optical imaging lens satisfies: 1.40mm , -1 ,

[0007] , 1 , ,

[0006] ,

[0005] <f1 / CT1 / d1s < 1.80mm - 1 , where f1 is the effective focal length of the first lens.

[0008] According to an exemplary embodiment of the present application, the optical imaging lens satisfies: 3.25 < D0s / DT11 < 3.90 and 2.35 < d0m / DT72 ≤ 2.50, where DT11 is the effective semi-aperture of the object side of the first lens, and DT72 is the effective semi-aperture of the image side of the seventh lens.

[0009] According to an exemplary embodiment of the present application, the optical imaging lens satisfies: 4.80 < L / (CT1 + T12) < 6.50, where L is the maximum length of the lens barrel along the optical axis, and T12 is the air gap between the first lens and the second lens on the optical axis.

[0010] According to an exemplary embodiment of the present application, the support element group further includes a second support element, the second support element is disposed between the second lens and the third lens and contacts the image side of the second lens; and the optical imaging lens satisfies: 1.70 < EP12 / T12 < 4.60, where EP12 is the distance along the optical axis from the image side of the first support element to the object side of the second support element, and T12 is the air gap between the first lens and the second lens on the optical axis.

[0011] According to an exemplary embodiment of the present application, the support element group further includes a second support element, the second support element is disposed between the second lens and the third lens and contacts the image side of the second lens; and the optical imaging lens satisfies: 15.60 < T23 / CP2 ≤ 39.00, where T23 is the air gap between the second lens and the third lens on the optical axis, and CP2 is the maximum thickness of the second support element.

[0012] According to an exemplary embodiment of the present application, the support element group further includes a fourth support element, a fifth support element and a sixth support element, the fourth support element is disposed between the fourth lens and the fifth lens and contacts the image side of the fourth lens, the fifth support element is disposed between the fifth lens and the sixth lens and contacts the image side of the fifth lens, the sixth support element is disposed between the sixth lens and the seventh lens and contacts the image side of the sixth lens; and the optical imaging lens satisfies: 1.40 < (EP45 + EP56) / (CT5 + T56) < 2.20, where EP45 is the distance along the optical axis from the image side of the fourth support element to the object side of the fifth support element, EP56 is the distance along the optical axis from the image side of the fifth support element to the object side of the sixth support element, CT5 is the central thickness of the fifth lens on the optical axis, and T56 is the air gap between the fifth lens and the sixth lens on the optical axis.

[0013] According to an exemplary embodiment of the present application, the support element group further includes a sixth support element and a seventh support element. The sixth support element is disposed between the sixth lens and the seventh lens and contacts the image side surface of the sixth lens, and the seventh support element is disposed on the image side of the seventh lens and contacts the image side surface of the seventh lens; and the optical imaging lens satisfies: 1.15 < d7s / d6m < 1.40, where d6m is the inner diameter of the image side surface of the sixth support element, and d7s is the inner diameter of the object side surface of the seventh support element.

[0014] According to an exemplary embodiment of the present application, the support element group further includes a sixth support element and a seventh support element. The sixth support element is disposed between the sixth lens and the seventh lens and contacts the image side surface of the sixth lens, and the seventh support element is disposed on the image side of the seventh lens and contacts the image side surface of the seventh lens; and the optical imaging lens satisfies: 1.00 ≤ SG72 / EP67 < 1.90, where SG72 is the distance along the optical axis from the intersection of the image side surface of the seventh lens and the optical axis to the object side surface of the seventh support element, and EP67 is the distance along the optical axis from the image side surface of the sixth support element to the object side surface of the seventh support element.

[0015] According to an exemplary embodiment of the present application, the optical imaging lens satisfies: 0.70 < SG72 / SG71 < 1.00, where SG71 is the distance along the optical axis from the intersection of the object side surface of the seventh lens and the optical axis to the image side surface of the sixth support element, and SG72 is the distance along the optical axis from the intersection of the image side surface of the seventh lens and the optical axis to the object side surface of the seventh support element.

[0016] According to an exemplary embodiment of the present application, the support element group further includes a sixth support element. The sixth support element is disposed between the sixth lens and the seventh lens and contacts the image side surface of the sixth lens; and the optical imaging lens satisfies: -20.60 ≤ (SG72 - SG71) / CP6 < -2.05, where SG71 is the distance along the optical axis from the intersection of the object side surface of the seventh lens and the optical axis to the image side surface of the sixth support element, SG72 is the distance along the optical axis from the intersection of the image side surface of the seventh lens and the optical axis to the object side surface of the seventh support element, and CP6 is the maximum thickness of the sixth support element.

[0017] According to an exemplary embodiment of the present application, the object side surface of the first lens is convex, and the image side surface is concave; the object side surface of the second lens is convex, and the image side surface is concave; the object side surface of the third lens is convex, and the image side surface is concave; the object side surface of the fourth lens is convex; the object side surface of the sixth lens is convex, and the image side surface is concave; the object side surface of the seventh lens is convex, and the image side surface is concave.

[0018] The optical imaging lens provided by this application is a large-aperture lens. The inner diameter of the image-side end face of the lens barrel and the entrance pupil diameter of the optical imaging lens satisfy 2.55 < d0m / EPD < 2.75. At the same time, the inner diameter of the object-side end face of the lens barrel and the inner diameter of the object-side face of the first supporting element satisfy 1.50 < d0s / d1s < 1.95. The first supporting element, as the supporting element closest to the object side, restricts the light entering the lens, thereby affecting the light passing through the lens. The first lens, as the lens closest to the object side, has a large light passing capacity, and the surface shape of the first lens is more sensitive compared to other lenses. By controlling the ratios of EP01 / CT1 and D0m / D0s, the aperture of the first lens and the ratio of the center thickness to the edge thickness can be controlled, making the light refraction at the first lens relatively gentle, reducing the overall sensitivity of the lens, effectively balancing the stress distribution inside the first lens, and reducing aberrations such as spherical aberration and coma caused by uneven thickness, significantly improving the clarity and resolution of imaging. At the same time, controlling the ratio of the outer diameters of the object-side end face and the image-side end face of the lens barrel can enhance or weaken the contribution of light at specific angles, thereby optimizing the imaging contrast, reducing the interference of stray light, and possibly achieving a more compact lens structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objects, and advantages of this application will become more apparent by reading the detailed description of the non-restrictive embodiments with reference to the following drawings. Among them:

[0020] Figure 1 Shows the structural arrangement diagram of an optical imaging lens of this application;

[0021] Figure 2 Shows the structural arrangement diagram of an optical imaging lens of this application;

[0022] Figure 3 Shows the structural schematic diagram of the optical imaging lens of Embodiment 1 of this application;

[0023] Figure 4 Shows the structural schematic diagram of the optical imaging lens of Embodiment 2 of this application;

[0024] Figure 5 Shows the astigmatism curve (A1), distortion curve (B1), and longitudinal chromatic aberration curve (C1) of the optical imaging lenses of Embodiment 1 and Embodiment 2 of this application;

[0025] Figure 6 Shows the structural schematic diagram of the optical imaging lens of Embodiment 3 of this application;

[0026] Figure 7 [[ID=३३]]Shows the structural schematic diagram of the optical imaging lens of Embodiment 4 of this application;

[0027] Figure 8The astigmatism curve (A2), distortion curve (B2), and magnification chromatic aberration curve (C2) of the optical imaging lenses of Embodiments 3 and 4 of this application are shown.

[0028] Figure 9 A schematic diagram of the structure of the optical imaging lens of Embodiment 5 of this application is shown;

[0029] Figure 10 A schematic diagram of the structure of the optical imaging lens of Embodiment 6 of this application is shown;

[0030] Figure 11 The astigmatism curve (A3), distortion curve (B3), and magnification chromatic aberration curve (C3) of the optical imaging lenses of Embodiments 5 and 6 of this application are shown.

[0031] Figure 12 A schematic diagram of the structure of the optical imaging lens of Embodiment 7 of this application is shown;

[0032] Figure 13 A schematic diagram of the optical imaging lens of Embodiment 8 of this application is shown.

[0033] Figure 14 The astigmatism curve (A4), distortion curve (B4), and magnification chromatic aberration curve (C4) of the optical imaging lenses of Embodiments 7 and 8 of this application are shown.

[0034] Figure 15 The aberration curves of the optical imaging lens of this application are shown when d0m / EPD = 2.66, d0s / d1s = 1.55, D0m / D0s = 1.75 and EP01 / CT1 = 0.95.

[0035] Figure 16 The modulation transfer function curves of the optical imaging lens of this application are shown when d0m / EPD = 2.66, d0s / d1s = 1.55, D0m / D0s = 1.75 and EP01 / CT1 = 0.95.

[0036] Figure 17 The aberration curves of the optical imaging lens of this application are shown when d0m / EPD = 2.66, d0s / d1s = 1.55, D0m / D0s = 1.85 and EP01 / CT1 = 1.2.

[0037] Figure 18 The modulation transfer function curves of the optical imaging lens of this application are shown when d0m / EPD = 2.66, d0s / d1s = 1.55, D0m / D0s = 1.85 and EP01 / CT1 = 1.2.

[0038] Figure 19The aberration curves of the optical imaging lens of this application are shown when d0m / EPD = 2.66, d0s / d1s = 1.55, D0m / D0s = 1.39 and EP01 / CT1 = 0.89.

[0039] Figure 20 The modulation transfer function curves of the optical imaging lens of this application are shown when d0m / EPD = 2.66, d0s / d1s = 1.55, D0m / D0s = 1.39 and EP01 / CT1 = 0.89. Detailed Implementation

[0040] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0041] It should be noted that in this specification, the terms "first," "second," "third," etc., are used only to distinguish one feature from another and do not imply any limitation on the features. Therefore, without departing from the teachings of this application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0042] In the accompanying drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are illustrated by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not drawn strictly to scale.

[0043] In this text, if a lens surface is convex and its location is not defined, it means that the lens surface is convex at least in the paraxial region; if a lens surface is concave and its location is not defined, it means that the lens surface is concave at least in the paraxial region. The paraxial region refers to the region near the optical axis. The surface of each lens closest to the subject is called the object-side surface of the lens, and the surface of each lens closest to the image plane is called the image-side surface of the lens.

[0044] It should also be understood that the terms "comprising" and / or "having," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. Furthermore, when describing embodiments of this application, the word "may" is used to mean "one or more embodiments of this application." And the term "exemplary" is intended to refer to an example or illustration.

[0045] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms (e.g., those defined in common dictionaries) shall be interpreted as having the meaning consistent with their meaning in the context of the relevant art and shall not be interpreted in an idealized or overly formalized sense, unless expressly so specified herein.

[0046] It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other. The following embodiments only illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of this application, and these all fall within the protection scope of this application. For example, the lens group, lens barrel, and supporting element group in the various embodiments of this application can be arbitrarily combined, and it is not limited to the lens group in one embodiment being combined only with the lens barrel, supporting element group, etc. of that embodiment.

[0047] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0048] Figure 1 and Figure 2 An exemplary structural layout diagram and schematic diagram of some parameters of an optical imaging lens according to this application are shown to facilitate a better understanding of this application. Figure 1 As shown, d0s is the inner diameter of the object-side end face of the lens barrel, d0m is the inner diameter of the image-side end face of the lens barrel, D0s is the outer diameter of the object-side end face of the lens barrel, D0m is the outer diameter of the image-side end face of the lens barrel, d1s is the inner diameter of the object-side surface of the first supporting element, d6m is the inner diameter of the image-side surface of the sixth supporting element, d7s is the inner diameter of the object-side surface of the seventh supporting element, EP01 is the distance along the optical axis between the object-side end face of the lens barrel and the object-side surface of the first supporting element, and EP12 is the distance along the optical axis between the object-side end face of the lens barrel and the object-side surface of the first supporting element. EP45 is the distance along the optical axis from the image side of the fourth support element to the object side of the fifth support element; EP56 is the distance along the optical axis from the image side of the fifth support element to the object side of the sixth support element; EP67 is the distance along the optical axis from the image side of the sixth support element to the object side of the seventh support element; CP2 is the maximum thickness of the second support element; CP6 is the maximum thickness of the sixth support element. Figure 2 As shown, DT11 is the effective half-aperture of the object side of the first lens, SG71 is the distance from the intersection of the object side of the seventh lens and the optical axis to the image side of the sixth support element along the optical axis, and SG72 is the distance from the intersection of the image side of the seventh lens and the optical axis to the object side of the seventh support element along the optical axis.

[0049] refer to Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 9 , Figure 10 , Figure 12 and Figure 13 The first aspect of this application provides an optical imaging lens comprising a seven-element lens group. The seven-element lens group may include a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens, arranged sequentially along the optical axis from the object side to the image side, each having optical power. Each lens has at least one object-side surface facing the subject and one image-side surface facing the imaging plane. Each lens has an effective diameter region capable of transmitting light and a non-effective diameter region surrounding the effective diameter region that cannot transmit light. In the first to seventh lenses, any two adjacent lenses may have an air gap along the optical axis.

[0050] In an exemplary embodiment, the first lens has positive optical power. The second lens has negative optical power. The third lens has either positive or negative optical power. The fourth lens has either positive or negative optical power. The fifth lens has either positive or negative optical power. The sixth lens has either positive or negative optical power. The seventh lens has negative optical power.

[0051] In an exemplary embodiment, the object-side surface of the first lens is convex, and the image-side surface is concave. The object-side surface of the second lens is convex, and the image-side surface is concave. The object-side surface of the third lens is convex, and the image-side surface is concave. The object-side surface of the fourth lens is convex, and the image-side surface is either convex or concave. The object-side surface of the fifth lens is concave, and the image-side surface is either convex or concave; or the object-side surface of the fifth lens is convex, and the image-side surface is concave. The object-side surface of the sixth lens is convex, and the image-side surface is concave. The object-side surface of the seventh lens is convex, and the image-side surface is concave.

[0052] In an exemplary embodiment, the optical imaging lens further includes a lens barrel. A lens group and a support element group are disposed within the lens barrel. The lens barrel includes an object-side end face, an image-side end face, an outer annular surface, and an inner annular surface, wherein the end face of the lens barrel closest to the object side is the object-side end face of the lens barrel, and the end face of the lens barrel closest to the image side is the image-side end face of the lens barrel; in a direction perpendicular to the optical axis, the surface of the lens barrel furthest from the optical axis is the outer annular surface, and the surface of the lens barrel closest to the optical axis is the inner annular surface.

[0053] In an exemplary embodiment, the optical imaging lens may further include an aperture stop for limiting the light beam. The aperture stop helps to concentrate the light entering the optical lens, reduce the maximum aperture of the optical lens, and decrease the assembly sensitivity of the system, thereby further improving the imaging quality of the optical lens. It should be noted that the aperture stop can be positioned between or on one side of any lens, depending on actual needs. For example, the aperture stop can be positioned on the object side of the first lens.

[0054] In an exemplary embodiment, the optical imaging lens further includes a group of supporting elements, which may include at least one supporting element. The supporting element is an annular through-hole element, with the central through-hole allowing light to pass through. The supporting elements are disposed between lenses and located in the non-effective diameter region of the lenses. It should be understood that this application does not specifically limit the number of supporting elements; at least one supporting element may be disposed between any two adjacent lenses, and the entire optical imaging lens may include any number of supporting elements. The supporting elements help the optical imaging lens intercept excess reflective light paths, reduce stray light and ghosting, and improve image quality. The shapes of the supporting elements may be the same or different, as long as they serve their respective functions.

[0055] In an exemplary embodiment, the support element group includes a first support element, a second support element, a third support element, a fourth support element, a fifth support element, a sixth support element, and a seventh support element. The first support element is positioned between a first lens and a second lens and at least partially contacts the image-side surface of the first lens and at least partially contacts the object-side surface of the second lens. The second support element is positioned between a second lens and a third lens and at least partially contacts the image-side surface of the second lens and at least partially contacts the object-side surface of the third lens. The third support element is positioned between a third lens and a fourth lens and at least partially contacts the image-side surface of the third lens and at least partially contacts the object-side surface of the fourth lens. The fourth support element is positioned between a fourth lens and a fifth lens and at least partially contacts the image-side surface of the fourth lens and at least partially contacts the object-side surface of the fifth lens. The fifth support element is positioned between a fifth lens and a sixth lens and at least partially contacts the image-side surface of the fifth lens and at least partially contacts the object-side surface of the sixth lens. The sixth support element is positioned between a sixth lens and a seventh lens and at least partially contacts the image-side surface of the sixth lens and at least partially contacts the object-side surface of the seventh lens. The seventh support element is placed on the image side of the seventh lens and is at least partially in contact with the image side surface of the seventh lens.

[0056] In an exemplary embodiment, the optical imaging lens satisfies: 2.55 < d0m / EPD < 2.75, 1.50 < d0s / d1s < 1.95, 1.45 < D0m / D0s < 1.80, and 0.9 < EP01 / CT1 < 1.15, where d0s is the inner diameter of the object-side end face of the lens barrel, d0m is the inner diameter of the image-side end face of the lens barrel, D0s is the outer diameter of the object-side end face of the lens barrel, D0m is the outer diameter of the image-side end face of the lens barrel, EPD is the entrance pupil diameter of the optical imaging lens, EP01 is the distance between the object-side end face of the lens barrel and the object-side surface of the first supporting element along the optical axis, CT1 is the central thickness of the first lens on the optical axis, and d1s is the inner diameter of the object-side surface of the first supporting element.

[0057] The optical imaging lens of the present application is a large-aperture lens. The inner diameter of the image-side end face of the lens barrel and the entrance pupil diameter of the optical imaging lens satisfy 2.55 < d0m / EPD < 2.75. At the same time, the inner diameter of the object-side end face of the lens barrel and the inner diameter of the object-side surface of the first supporting element satisfy 1.50 < d0s / d1s < 1.95. The first supporting element, as the supporting element closest to the object side, restricts the light entering the lens, thereby affecting the light transmission amount entering the lens. The first lens, as the lens closest to the object side, has a large light transmission amount, and the surface shape of the first lens is more sensitive than that of other lenses. By controlling the ratios of EP01 / CT1 and D0m / D0s, the thickness ratio and aperture of the first lens can be controlled, making the light refraction at the first lens relatively gentle, reducing the overall sensitivity of the lens, effectively balancing the stress distribution inside the first lens, and reducing aberrations caused by uneven thickness, such as spherical aberration and coma, significantly improving the clarity and resolution of imaging; at the same time, controlling the ratio of the outer diameters of the object-side end face and the image-side end face of the lens barrel can enhance or weaken the contribution of light at a specific angle, thereby optimizing the imaging contrast, reducing the interference of stray light, and possibly achieving a more compact lens structure.

[0058] Figure 15 and Figure 16 respectively show the aberration curves and modulation transfer function curves of the optical imaging lens of the present application when d0m / EPD = 2.66, d0s / d1s = 1.55, D0m / D0s = 1.75, and EP01 / CT1 = 0.95;

[0059] Figure 17 and Figure 18 respectively show the aberration curves and modulation transfer function curves of the optical imaging lens of the present application when d0m / EPD = 2.66, d0s / d1s = 1.55, D0m / D0s = 1.85, and EP01 / CT1 = 1.2;

[0060] Figure 19 and Figure 20The aberration curves and modulation transfer function curves of the optical imaging lens of this application are shown respectively when d0m / EPD = 2.66, d0s / d1s = 1.55, D0m / D0s = 1.39 and EP01 / CT1 = 0.89.

[0061] Figure 15 and Figure 16 The optical imaging lens in this application meets the ranges defined by the conditions d0m / EPD and d0s / d1s. While ensuring a large aperture, adjusting the ratio of D0m / D0s can enhance or reduce the contribution of light rays at specific angles, thereby optimizing image contrast, reducing stray light interference, and potentially achieving a more compact lens structure. Furthermore, by controlling the ratios of EP01 / CT1 and D0m / D0s, the aperture of the first lens and the ratio of its center thickness to its edge thickness can be controlled, resulting in smoother light refraction at the first lens. This reduces the overall sensitivity of the lens, effectively balances the stress distribution within the first lens, and reduces aberrations caused by uneven thickness, such as spherical aberration and coma, significantly improving image sharpness and resolution, and ultimately enhancing the imaging quality of the optical imaging lens. Figure 15 As can be seen, the optical imaging lens exhibits good aberrations across all fields of view, with no significant spherical aberration, coma, or field curvature. From... Figure 16 As can be seen, the modulation transfer function (MTF) curve has a high peak value and good convergence.

[0062] Figure 17 and Figure 18 The optical imaging lens in this application meets the range defined by the conditional formulas d0m / EPD and d0s / d1s. Under the premise of ensuring that the optical imaging lens has a large aperture, the conditional formulas D0m / D0s and EP01 / CT1 both exceed the upper limit of the range defined by this application. CT1 decreases and D0m increases, the ratio of the middle thickness to the edge thickness of the first lens increases, resulting in obvious field curvature defocus and aberration of the lens, and a significant decrease in peripheral resolution, which affects the imaging quality of the optical imaging lens.

[0063] Figure 19 and Figure 20 The optical imaging lens in this application meets the ranges defined by the conditional formulas d0m / EPD and d0s / d1s. Under the premise of ensuring that the optical imaging lens has a large aperture, the conditional formulas D0m / D0s and EP01 / CT1 both exceed the lower limit of the range defined by this application, which makes the aperture ratio of the object side and the image side of the optical imaging lens smaller, the lens contrast decreases, and CT1 increases, resulting in obvious spherical aberration of the lens. The central field of view of the MTF shows obvious light convergence failure, the full field of view resolution is seriously reduced, and the imaging quality of the optical imaging lens is affected.

[0064] In an exemplary embodiment, the optical imaging lens satisfies: 2.80 < d0s / DT11 < 3.65, where d0s is the inner diameter of the object-side end face of the lens barrel, and DT11 is the effective semi-aperture of the object-side face of the first lens. The inner diameter of the object-side end face of the lens barrel can control the amount of light entering. By controlling the above conditions, the light entering the lens can meet the requirements of subsequent light after being refracted by the effective diameter of the first lens, satisfying the large aperture of the lens.

[0065] In an exemplary embodiment, the optical imaging lens satisfies: 3.35 < d1s / CT1 ≤ 4.10, where d1s is the inner diameter of the object-side face of the first bearing element, and CT1 is the central thickness of the first lens on the optical axis. By controlling the above conditions, it helps to ensure that the first lens can effectively collect and transmit light, while reducing aberrations and distortions caused by improper lens thickness. At the same time, as a key element in the lens group, by controlling the ratio of d1s / CT1, it helps to optimize the arrangement and fixing method of subsequent elements inside the lens, improving the optical performance and mechanical structure stability of the lens.

[0066] In an exemplary embodiment, the optical imaging lens satisfies: 1.40mm -1 <f1 / CT1 / d1s < 1.80mm -1 , where f1 is the effective focal length of the first lens, d1s is the inner diameter of the object-side face of the first bearing element, and CT1 is the central thickness of the first lens on the optical axis. By controlling the above conditions, it helps to ensure the effective role of the first lens in the lens system, can optimize the refraction and focusing effects of light, reduce aberrations and distortions, thereby improving the clarity and resolution of imaging; and by controlling the proportional relationship among f1, CT1, and d1s, the overall size of the lens can be controlled to a certain extent, achieving a compact design of the lens while maintaining optical performance, which helps to meet the requirements of modern electronic devices for miniaturization and lightweight.

[0067] In an exemplary embodiment, the optical imaging lens satisfies: 3.25 < D0s / DT11 < 3.90 and 2.35 < d0m / DT72 ≤ 2.50, where d0m is the inner diameter of the image-side end face of the lens barrel, D0s is the outer diameter of the object-side end face of the lens barrel, DT11 is the effective semi-aperture of the object-side face of the first lens, and DT72 is the effective semi-aperture of the image-side face of the seventh lens. By controlling the above conditions, it helps to ensure that the first lens can effectively collect light, and reduce light loss or scattering caused by the mismatch between the inner diameter of the lens barrel and the lens aperture. It can also optimize the light transmission efficiency and imaging quality of the entire lens system, which is beneficial to improving imaging clarity and contrast.

[0068] In an exemplary embodiment, the optical imaging lens satisfies: 4.80 < L / (CT1 + T12) < 6.50, where L is the maximum length of the lens barrel along the optical axis, T12 is the air gap between the first lens and the second lens on the optical axis, and CT1 is the central thickness of the first lens on the optical axis. By controlling the above conditions, it helps to optimize the overall length of the lens while maintaining certain optical performance, making it more compact and meeting the requirements of modern electronic devices for miniaturization and lightweight. Moreover, the proportional relationship of this conditional formula provides clear guidance for the manufacturing and assembly processes, which can reduce errors in the manufacturing and assembly processes and improve the overall quality of the lens.

[0069] In an exemplary embodiment, the abutting element group further includes a second abutting element, which is placed between the second lens and the third lens and contacts the image side of the second lens; and the optical imaging lens satisfies: 1.70 < EP12 / T12 < 4.60, where EP12 is the distance along the optical axis from the image side of the first abutting element to the object side of the second abutting element, and T12 is the air gap between the first lens and the second lens on the optical axis. The second abutting element provides additional support for the second lens, helping to reduce lens displacement caused by vibration or external shock; by precisely controlling the ratio of EP12 to T12, the relative positions between the lens groups can be adjusted, thereby optimizing the light transmission path, helping to reduce aberration, distortion and other optical defects, and improving the clarity and contrast of the imaging.

[0070] In an exemplary embodiment, the abutting element group further includes a second abutting element, which is placed between the second lens and the third lens and contacts the image side of the second lens; and the optical imaging lens satisfies: 15.60 < T23 / CP2 ≤ 39.00, where T23 is the air gap between the second lens and the third lens on the optical axis, and CP2 is the maximum thickness of the second abutting element. By controlling the above conditions, the internal space layout of the lens can be optimized, which helps to ensure that there is sufficient space for light transmission and refraction between each lens and abutting element, while avoiding unnecessary space waste.

[0071] In an exemplary embodiment, the support element group further includes a fourth support element, a fifth support element, and a sixth support element. The fourth support element is disposed between the fourth lens and the fifth lens and contacts the image side surface of the fourth lens. The fifth support element is disposed between the fifth lens and the sixth lens and contacts the image side surface of the fifth lens. The sixth support element is disposed between the sixth lens and the seventh lens and contacts the image side surface of the sixth lens. And the optical imaging lens satisfies: 1.40 < (EP45 + EP56) / (CT5 + T56) < 2.2, where EP45 is the distance along the optical axis from the image side surface of the fourth support element to the object side surface of the fifth support element, EP56 is the distance along the optical axis from the image side surface of the fifth support element to the object side surface of the sixth support element, CT5 is the central thickness of the fifth lens on the optical axis, and T56 is the air gap between the fifth lens and the sixth lens on the optical axis. By controlling the above conditions, the light transmission path between the lens groups can be optimized, reducing aberration and distortion, improving the clarity and resolution of the imaging. And the proportional relationship of (EP45 + EP56) / (CT5 + T56) may be optimized for a specific optical design to ensure that the lens achieves the best optical performance at a specific working distance and field angle. The fourth support element and the fifth support element respectively support the fourth lens and the fifth lens, ensuring the stable positions of the fourth lens and the fifth lens inside the lens. This stable support structure helps to reduce lens displacement caused by vibration or temperature changes, thereby improving the stability of the imaging.

[0072] In an exemplary embodiment, the support element group further includes a sixth support element and a seventh support element. The sixth support element is disposed between the sixth lens and the seventh lens and contacts the image side surface of the sixth lens. The seventh support element is disposed on the image side of the seventh lens and contacts the image side surface of the seventh lens. And the optical imaging lens satisfies: 1.15 < d7s / d6m < 1.40, where d6m is the inner diameter of the image side surface of the sixth support element, and d7s is the inner diameter of the object side surface of the seventh support element. By controlling the above conditions, the space inside the lens can be more effectively utilized, which helps to ensure sufficient space for light transmission and refraction between each lens and support element, while avoiding unnecessary space waste. The seventh support element provides additional support for the seventh lens, helping to enhance the stability of the lens structure. At the same time, by controlling the proportional relationship between the inner diameters of the seventh support element and the sixth support element, the stability of the entire lens system can be further ensured, reducing lens displacement caused by vibration or external impact. [[ID=​In an exemplary embodiment, the set of supporting elements further includes a sixth supporting element and a seventh supporting element. The sixth supporting element is disposed between the sixth lens and the seventh lens and contacts the image side surface of the sixth lens, and the seventh supporting element is disposed on the image side of the seventh lens and contacts the image side surface of the seventh lens; and the optical imaging lens satisfies: 1.00 ≤ SG72 / EP67 < 1.90, where SG72 is the distance along the optical axis from the intersection of the image side surface of the seventh lens and the optical axis to the object side surface of the seventh supporting element, and EP67 is the distance along the optical axis from the image side surface of the sixth supporting element to the object side surface of the seventh supporting element. By controlling the above conditions, the spatial relationship between the seventh lens and the sixth supporting element can be optimized, which helps to ensure that there is sufficient space between the lens and the supporting element for light transmission and refraction, while avoiding unnecessary space waste or interference; and the ratio range of SG72 / EP67 provides a degree of freedom in design. On the premise of ensuring the lens performance level, it can be fine-tuned according to the specific application scenario and requirements of the lens. This flexibility helps to meet the customized needs of different customers and promotes the innovation of lens design.

[0074] In an exemplary embodiment, the optical imaging lens satisfies: 0.70 < SG72 / SG71 < 1.00, where SG71 is the distance along the optical axis from the intersection of the object side surface of the seventh lens and the optical axis to the image side surface of the sixth supporting element, and SG72 is the distance along the optical axis from the intersection of the image side surface of the seventh lens and the optical axis to the object side surface of the seventh supporting element. By controlling the above conditions, the edge ray processing of the lens can be optimized, and aberrations such as coma and astigmatism generated due to improper refraction or reflection of the edge rays of the lens can be reduced. And the appropriate ratio of SG71 and SG72 helps to ensure that the light can propagate along the expected path when passing through the lens, thereby improving the clarity and contrast of the image, and further improving the imaging quality.

[0075] In an exemplary embodiment, the set of supporting elements further includes a sixth supporting element. The sixth supporting element is disposed between the sixth lens and the seventh lens and contacts the image side surface of the sixth lens; and the optical imaging lens satisfies: -20.60 ≤ (SG72 - SG71) / CP6 < -2.05, where SG71 is the distance along the optical axis from the intersection of the object side surface of the seventh lens and the optical axis to the image side surface of the sixth supporting element, SG72 is the distance along the optical axis from the intersection of the image side surface of the seventh lens and the optical axis to the object side surface of the seventh supporting element, and CP6 is the maximum thickness of the sixth supporting element. By controlling the above conditions, it helps to ensure the rationality of the lens interval and avoid the adverse effects on the imaging quality caused by too large or too small intervals; on the premise of meeting the imaging performance requirements, by reasonably setting the ratio of (SG72 - SG71) / CP6, the overall size and weight of the optical system can be reduced, making it more compact and portable, which is particularly important for mobile devices and portable optical instruments.

[0076] A second aspect of the present application provides an optical imaging lens, including a lens barrel and a lens group and a support element group accommodated in the lens barrel. The lens group is composed of a first lens with a positive optical power, a second lens with a negative optical power, a third lens with a positive or negative optical power, a fourth lens with a positive or negative optical power, a fifth lens with a positive or negative optical power, a sixth lens with a positive or negative optical power, and a seventh lens with a negative optical power arranged in sequence from the object side to the image side along the optical axis; the object side surface of the first lens is convex, and the image side surface is concave; the object side surface of the second lens is convex, and the image side surface is concave; the object side surface of the third lens is convex, and the image side surface is concave; the object side surface of the fourth lens is convex; the object side surface of the sixth lens is convex, and the image side surface is concave; the object side surface of the seventh lens is convex, and the image side surface is concave; the support element group includes a first support element and a second support element. The first support element is placed between the first lens and the second lens and contacts the image side surface of the first lens, and the second support element is placed between the second lens and the third lens and contacts the image side surface of the second lens; the optical imaging lens satisfies: 2.55 < d0m / EPD < 2.75, 1.4mm -1 <f1 / CT1 / d1s < 1.8mm -1 and -18.85mm -1 <f2 / CT2 / d2s < -14.45mm -1 , where d0m is the inner diameter of the image side end face of the lens barrel, EPD is the entrance pupil diameter of the optical imaging lens, f1 is the effective focal length of the first lens, CT1 is the central thickness of the first lens on the optical axis, d1s is the inner diameter of the object side surface of the first support element, f2 is the effective focal length of the second lens, CT2 is the central thickness of the second lens on the optical axis, and d2s is the inner diameter of the object side surface of the second support element.

[0077] The optical imaging lens of the present application is a large-aperture lens. The inner diameter of the image side end face of the lens barrel and the entrance pupil diameter of the optical imaging lens satisfy 2.55 < d0m / EPD < 2.75. By controlling the ratios of f1 / CT1 / d1s and f2 / CT2 / d2s, it helps to ensure the effective functions of the first lens and the second lens in the lens system, can optimize the refraction and focusing effects of light, reduce aberration and distortion, thereby improving the clarity and resolution of imaging, and can control the overall size of the lens to a certain extent. While maintaining the optical performance, the compact design of the lens is achieved, which helps to meet the requirements of modern electronic devices for miniaturization and light weight.

[0078] Those skilled in the art should understand that without departing from the technical solutions claimed in the present application, the number of lenses and support elements constituting the optical imaging lens can be changed to obtain the various results and advantages described in this specification.

[0079] Specific embodiments of the optical imaging lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings. Specifically, refer to... Figures 3 to 5 Description of optical imaging lenses according to Embodiments 1 and 2 of this application; see reference Figures 6 to 8 Description of optical imaging lenses according to Embodiments 3 and 4 of this application; see reference Figures 9 to 11 Description of optical imaging lenses according to Embodiments 5 and 6 of this application; see reference Figures 12 to 14 The optical imaging lens according to Embodiments 7 and 8 of this application is described.

[0080] Example 1

[0081] Figure 3 A schematic diagram of the optical imaging lens of Embodiment 1 of this application is shown. Figure 3 As shown, the optical imaging lens includes a lens barrel P0, a seven-element lens group disposed within the lens barrel P0, and a support element group. The seven-element lens group includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and a seventh lens E7. An aperture stop STO (not shown) is disposed on the object side of the first lens E1.

[0082] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave.

[0083] The support element group includes a first support element P1, a second support element P2, a third support element P3, a fourth support element P4, a fifth support element P5, a sixth support element P6, and a seventh support element P7. The first support element P1 is positioned between the first lens E1 and the second lens E2, with its object-side surface at least partially contacting the image-side surface S2 of the first lens E1, and its image-side surface at least partially contacting the object-side surface S3 of the second lens E2. The second support element P2 is positioned between the second lens E2 and the third lens E3, with its object-side surface at least partially contacting the image-side surface S4 of the second lens E2, and its image-side surface at least partially contacting the object-side surface S5 of the third lens E3. The third support element P3 is positioned between the third lens E3 and the fourth lens E4, with its object-side surface at least partially contacting the image-side surface S6 of the third lens E3, and its image-side surface at least partially contacting the object-side surface S7 of the fourth lens E4. The fourth supporting element P4 is positioned between the fourth lens E4 and the fifth lens E5, with its object-side surface at least partially contacting the image-side surface S8 of the fourth lens E4, and its image-side surface at least partially contacting the object-side surface S9 of the fifth lens E5. The fifth supporting element P5 is positioned between the fifth lens E5 and the sixth lens E6, with its object-side surface at least partially contacting the image-side surface S10 of the fifth lens E5, and its image-side surface at least partially contacting the object-side surface S11 of the sixth lens E6. The sixth supporting element P6 is positioned between the sixth lens E6 and the seventh lens E7, with its object-side surface at least partially contacting the image-side surface S12 of the sixth lens E6, and its image-side surface at least partially contacting the object-side surface S13 of the seventh lens E7. The seventh supporting element P7 is positioned on the image side of the seventh lens E7, with its object-side surface at least partially contacting the image-side surface S14 of the seventh lens E7.

[0084] In the example, a filter may also be disposed between the seventh lens E7 and the imaging surface S17 (not shown), the filter having an object-side surface S15 (not shown) and an image-side surface S16 (not shown). Light from the object passes sequentially through each surface S1 to S16 and is finally imaged on the imaging surface S17.

[0085] Table 1 shows the basic parameters of the lens group of the optical imaging lens of Example 1, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0086] Table 1

[0087]

[0088]

[0089] In this embodiment, the object-side surface and image-side surface of any one of the first lens E1 to the seventh lens E7 are aspherical surfaces, and the surface shape of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0090]

[0091] Where x is the distance vector from the vertex of the aspherical surface at a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the i-th order correction coefficient of the aspherical surface. Table 2 gives the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical surfaces S1 to S14 in Example 1.

[0092] Table 2

[0093]

[0094] Example 2

[0095] Figure 4 A schematic diagram of the optical imaging lens of Embodiment 2 of this application is shown. Figure 4 As shown, the optical imaging lens includes a lens barrel P0, a seven-element lens group disposed within the lens barrel P0, and a support element group. The seven-element lens group, arranged sequentially along the optical axis from the object side to the image side, includes: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and a seventh lens E7. An aperture stop STO (not shown) is disposed on the object side of the first lens E1. The support element group includes a first support element P1, a second support element P2, a third support element P3, a fourth support element P4, a fifth support element P5, a sixth support element P6, and a seventh support element P7.

[0096] The seven-element lens group of the optical imaging lens in this embodiment has the same structure as the seven-element lens group of the optical imaging lens in Embodiment 1. Its basic parameters are detailed in Tables 1 and 2, and will not be repeated here.

[0097] The difference between this embodiment and Embodiment 1 is that the structural dimensions of the lens barrel P0 and at least some of the components in the supporting element group are different.

[0098] Figure 5 (A1) shows the astigmatism curves of the optical imaging lenses of Embodiment 1 and Embodiment 2, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 5 (B1) shows the distortion curves of the optical imaging lenses of Embodiment 1 and Embodiment 2, which represent the distortion magnitude values ​​corresponding to different field of view angles. Figure 5(C1) shows the magnification chromatic aberration curves of the optical imaging lenses of Embodiments 1 and 2, which represent the deviation of different image heights on the imaging plane after light passes through the lens. According to Figure 5 It can be seen that the optical imaging lenses provided in Embodiments 1 and 2 can achieve good imaging quality.

[0099] Example 3

[0100] Figure 6 A schematic diagram of the optical imaging lens of Embodiment 3 of this application is shown. Figure 6 As shown, the optical imaging lens includes a lens barrel P0, a seven-element lens group disposed within the lens barrel P0, and a support element group. The seven-element lens group includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and a seventh lens E7. An aperture stop STO (not shown) is disposed on the object side of the first lens E1.

[0101] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave.

[0102] The support element group includes a first support element P1, a second support element P2, a third support element P3, a fourth support element P4, a fifth support element P5, a sixth support element P6, and a seventh support element P7. The first support element P1 is positioned between the first lens E1 and the second lens E2, with its object-side surface at least partially contacting the image-side surface S2 of the first lens E1, and its image-side surface at least partially contacting the object-side surface S3 of the second lens E2. The second support element P2 is positioned between the second lens E2 and the third lens E3, with its object-side surface at least partially contacting the image-side surface S4 of the second lens E2, and its image-side surface at least partially contacting the object-side surface S5 of the third lens E3. The third support element P3 is positioned between the third lens E3 and the fourth lens E4, with its object-side surface at least partially contacting the image-side surface S6 of the third lens E3, and its image-side surface at least partially contacting the object-side surface S7 of the fourth lens E4. The fourth supporting element P4 is positioned between the fourth lens E4 and the fifth lens E5, with its object-side surface at least partially contacting the image-side surface S8 of the fourth lens E4, and its image-side surface at least partially contacting the object-side surface S9 of the fifth lens E5. The fifth supporting element P5 is positioned between the fifth lens E5 and the sixth lens E6, with its object-side surface at least partially contacting the image-side surface S10 of the fifth lens E5, and its image-side surface at least partially contacting the object-side surface S11 of the sixth lens E6. The sixth supporting element P6 is positioned between the sixth lens E6 and the seventh lens E7, with its object-side surface at least partially contacting the image-side surface S12 of the sixth lens E6, and its image-side surface at least partially contacting the object-side surface S13 of the seventh lens E7. The seventh supporting element P7 is positioned on the image side of the seventh lens E7, with its object-side surface at least partially contacting the image-side surface S14 of the seventh lens E7.

[0103] In the example, a filter may also be disposed between the seventh lens E7 and the imaging surface S17 (not shown), the filter having an object-side surface S15 (not shown) and an image-side surface S16 (not shown). Light from the object passes sequentially through each surface S1 to S16 and is finally imaged on the imaging surface S17.

[0104] Table 3 shows the basic parameters of the lens group of the optical imaging lens in Example 3, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0105] Table 3

[0106]

[0107] In this embodiment, the object-side surface and image-side surface of any one of the first lens E1 to the seventh lens E7 are aspherical surfaces. The surface shape of each aspherical surface can be defined by, but is not limited to, the formula (1) given in Embodiment 1 above. Table 4 shows the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical surface S1 to S14 in Embodiment 3.

[0108] Table 4

[0109]

[0110] Example 4

[0111] Figure 7 A schematic diagram of the optical imaging lens of Embodiment 4 of this application is shown. Figure 7 As shown, the optical imaging lens includes a lens barrel P0, a seven-element lens group disposed within the lens barrel P0, and a support element group. The seven-element lens group, arranged sequentially along the optical axis from the object side to the image side, includes: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and a seventh lens E7. An aperture stop STO (not shown) is disposed on the object side of the first lens E1. The support element group includes a first support element P1, a second support element P2, a third support element P3, a fourth support element P4, a fifth support element P5, a sixth support element P6, and a seventh support element P7.

[0112] The seven-element lens group of the optical imaging lens in this embodiment has the same structure as the seven-element lens group of the optical imaging lens in embodiment 3. Its basic parameters are detailed in Tables 3 and 4, and will not be repeated here.

[0113] The difference between this embodiment and embodiment 3 is that the structural dimensions of the lens barrel P0 and at least some of the components in the supporting element group are different.

[0114] Figure 8 (A2) shows the astigmatism curves of the optical imaging lenses of Examples 3 and 4, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 8 (B2) shows the distortion curves of the optical imaging lenses of Examples 3 and 4, which represent the distortion magnitude values ​​corresponding to different field of view angles. Figure 8 (C2) shows the magnification chromatic aberration curves of the optical imaging lenses of Embodiments 3 and 4, which represent the deviation of different image heights on the imaging plane after light passes through the lens. According to Figure 8 It can be seen that the optical imaging lenses provided in Embodiments 3 and 4 can achieve good imaging quality.

[0115] Example 5

[0116] Figure 9 A schematic diagram of the optical imaging lens of Embodiment 5 of this application is shown. Figure 9 As shown, the optical imaging lens includes a lens barrel P0, a seven-element lens group disposed within the lens barrel P0, and a support element group. The seven-element lens group includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and a seventh lens E7. An aperture stop STO (not shown) is disposed on the object side of the first lens E1.

[0117] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave.

[0118] The support element group includes a first support element P1, a second support element P2, a third support element P3, a fourth support element P4, a fifth support element P5, a sixth support element P6, and a seventh support element P7. The first support element P1 is positioned between the first lens E1 and the second lens E2, with its object-side surface at least partially contacting the image-side surface S2 of the first lens E1, and its image-side surface at least partially contacting the object-side surface S3 of the second lens E2. The second support element P2 is positioned between the second lens E2 and the third lens E3, with its object-side surface at least partially contacting the image-side surface S4 of the second lens E2, and its image-side surface at least partially contacting the object-side surface S5 of the third lens E3. The third support element P3 is positioned between the third lens E3 and the fourth lens E4, with its object-side surface at least partially contacting the image-side surface S6 of the third lens E3, and its image-side surface at least partially contacting the object-side surface S7 of the fourth lens E4. The fourth supporting element P4 is positioned between the fourth lens E4 and the fifth lens E5, with its object-side surface at least partially contacting the image-side surface S8 of the fourth lens E4, and its image-side surface at least partially contacting the object-side surface S9 of the fifth lens E5. The fifth supporting element P5 is positioned between the fifth lens E5 and the sixth lens E6, with its object-side surface at least partially contacting the image-side surface S10 of the fifth lens E5, and its image-side surface at least partially contacting the object-side surface S11 of the sixth lens E6. The sixth supporting element P6 is positioned between the sixth lens E6 and the seventh lens E7, with its object-side surface at least partially contacting the image-side surface S12 of the sixth lens E6, and its image-side surface at least partially contacting the object-side surface S13 of the seventh lens E7. The seventh supporting element P7 is positioned on the image side of the seventh lens E7, with its object-side surface at least partially contacting the image-side surface S14 of the seventh lens E7.

[0119] In the example, a filter may also be disposed between the seventh lens E7 and the imaging surface S17 (not shown), the filter having an object-side surface S15 (not shown) and an image-side surface S16 (not shown). Light from the object passes sequentially through each surface S1 to S16 and is finally imaged on the imaging surface S17.

[0120] Table 5 shows the basic parameters of the lens group of the optical imaging lens of Example 5, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0121] Table 5

[0122]

[0123]

[0124] In this embodiment, the object-side surface and image-side surface of any one of the first lens E1 to the seventh lens E7 are aspherical surfaces. The surface shape of each aspherical surface can be defined by, but is not limited to, the formula (1) given in Embodiment 1 above. Table 6 shows the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical surface S1 to S14 in Embodiment 5.

[0125] Table 6

[0126]

[0127] Example 6

[0128] Figure 10 A schematic diagram of the optical imaging lens of Embodiment 6 of this application is shown. Figure 10 As shown, the optical imaging lens includes a lens barrel P0, a seven-element lens group disposed within the lens barrel P0, and a support element group. The seven-element lens group, arranged sequentially along the optical axis from the object side to the image side, includes: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and a seventh lens E7. An aperture stop STO (not shown) is disposed on the object side of the first lens E1. The support element group includes a first support element P1, a second support element P2, a third support element P3, a fourth support element P4, a fifth support element P5, a sixth support element P6, and a seventh support element P7.

[0129] The seven-element lens group of the optical imaging lens in this embodiment has the same structure as the seven-element lens group of the optical imaging lens in embodiment 5. Its basic parameters are detailed in Tables 5 and 6, and will not be repeated here.

[0130] The difference between this embodiment and embodiment 5 is that the structural dimensions of at least some of the components in the lens barrel P0 and the supporting element group are different.

[0131] Figure 11 (A3) shows the astigmatism curves of the optical imaging lenses of Embodiments 5 and 6, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 11 (B3) shows the distortion curves of the optical imaging lenses of Embodiments 5 and 6, which represent the distortion magnitude values ​​corresponding to different field of view angles. Figure 11 (C3) shows the magnification chromatic aberration curves of the optical imaging lenses of Embodiments 5 and 6, which represent the deviation of different image heights on the imaging plane after light passes through the lens. According to Figure 11 It can be seen that the optical imaging lenses provided in Embodiments 5 and 6 can achieve good imaging quality.

[0132] Example 7

[0133] Figure 12 A schematic diagram of the optical imaging lens of Embodiment 7 of this application is shown. Figure 12 As shown, the optical imaging lens includes a lens barrel P0, a seven-element lens group disposed within the lens barrel P0, and a support element group. The seven-element lens group includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and a seventh lens E7. An aperture stop STO (not shown) is disposed on the object side of the first lens E1.

[0134] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being concave and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave.

[0135] The support element group includes a first support element P1, a second support element P2, a third support element P3, a fourth support element P4, a fifth support element P5, a sixth support element P6, and a seventh support element P7. The first support element P1 is positioned between the first lens E1 and the second lens E2, with its object-side surface at least partially contacting the image-side surface S2 of the first lens E1, and its image-side surface at least partially contacting the object-side surface S3 of the second lens E2. The second support element P2 is positioned between the second lens E2 and the third lens E3, with its object-side surface at least partially contacting the image-side surface S4 of the second lens E2, and its image-side surface at least partially contacting the object-side surface S5 of the third lens E3. The third support element P3 is positioned between the third lens E3 and the fourth lens E4, with its object-side surface at least partially contacting the image-side surface S6 of the third lens E3, and its image-side surface at least partially contacting the object-side surface S7 of the fourth lens E4. The fourth supporting element P4 is positioned between the fourth lens E4 and the fifth lens E5, with its object-side surface at least partially contacting the image-side surface S8 of the fourth lens E4, and its image-side surface at least partially contacting the object-side surface S9 of the fifth lens E5. The fifth supporting element P5 is positioned between the fifth lens E5 and the sixth lens E6, with its object-side surface at least partially contacting the image-side surface S10 of the fifth lens E5, and its image-side surface at least partially contacting the object-side surface S11 of the sixth lens E6. The sixth supporting element P6 is positioned between the sixth lens E6 and the seventh lens E7, with its object-side surface at least partially contacting the image-side surface S12 of the sixth lens E6, and its image-side surface at least partially contacting the object-side surface S13 of the seventh lens E7. The seventh supporting element P7 is positioned on the image side of the seventh lens E7, with its object-side surface at least partially contacting the image-side surface S14 of the seventh lens E7.

[0136] In the example, a filter may also be disposed between the seventh lens E7 and the imaging surface S17 (not shown), the filter having an object-side surface S15 (not shown) and an image-side surface S16 (not shown). Light from the object passes sequentially through each surface S1 to S16 and is finally imaged on the imaging surface S17.

[0137] Table 7 shows the basic parameters of the lens group of the optical imaging lens of Example 7, where the units of radius of curvature and thickness / distance are millimeters (mm).

[0138] Table 7

[0139]

[0140] In this embodiment, the object-side surface and image-side surface of any one of the first lens E1 to the seventh lens E7 are aspherical surfaces. The surface shape of each aspherical surface can be defined by, but is not limited to, the formula (1) given in Embodiment 1 above. Table 8 shows the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical surface S1 to S14 in Embodiment 7.

[0141] Table 8

[0142]

[0143]

[0144] Example 8

[0145] Figure 13 A schematic diagram of the optical imaging lens of Embodiment 8 of this application is shown. Figure 13 As shown, the optical imaging lens includes a lens barrel P0, a seven-element lens group disposed within the lens barrel P0, and a support element group. The seven-element lens group, arranged sequentially along the optical axis from the object side to the image side, includes: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and a seventh lens E7. An aperture stop STO (not shown) is disposed on the object side of the first lens E1. The support element group includes a first support element P1, a second support element P2, a third support element P3, a fourth support element P4, a fifth support element P5, a sixth support element P6, and a seventh support element P7.

[0146] The seven-element lens group of the optical imaging lens in this embodiment has the same structure as the seven-element lens group of the optical imaging lens in embodiment 7. Its basic parameters are detailed in Tables 7 and 8, and will not be repeated here.

[0147] The difference between this embodiment and embodiment 7 is that the structural dimensions of the lens barrel P0 and at least some of the components in the supporting element group are different.

[0148] Figure 14 (A4) shows the astigmatism curves of the optical imaging lenses of Embodiments 7 and 8, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 14 (B4) shows the distortion curves of the optical imaging lenses of Examples 7 and 8, which represent the distortion magnitude values ​​corresponding to different field of view angles. Figure 14 (C4) shows the magnification chromatic aberration curves of the optical imaging lenses of Embodiments 7 and 8, which represent the deviation of different image heights on the imaging plane after light passes through the lens. According to Figure 14 It can be seen that the optical imaging lenses provided in Embodiments 7 and 8 can achieve good imaging quality.

[0149] Table 9 provides the parameter values ​​of EPD, f, f1, f2, f3, f4, f5, f6, f7, DT11, and DT72 for each of Examples 1 to 8. The unit of each parameter value is millimeters (mm).

[0150] Table 9

[0151]

[0152]

[0153] Table 10 provides the parameter values ​​for the lens barrel P0 and at least some of the components in the supporting element group in each of Embodiments 1 to 8. Some of the parameters can be determined according to... Figure 1 and Figure 2 The measurements were obtained using the annotation method shown, and the units for the parameters listed in Table 10 are all millimeters (mm).

[0154] Table 10

[0155] Parameters / Examples 1 2 3 4 5 6 7 8 d1s 4.332 4.288 4.329 4.293 4.374 4.374 4.315 4.182 d2s 3.806 3.826 3.887 3.827 3.854 3.854 3.888 3.888 d6m 8.590 8.634 9.190 9.200 8.288 8.288 8.942 8.942 d7s 10.434 10.434 10.699 10.707 11.299 11.482 11.125 11.302 d0s 7.021 6.616 7.339 7.075 8.384 8.384 8.031 8.106 d0m 12.341 12.389 12.553 12.553 12.304 12.304 12.115 12.115 D0s 8.021 8.194 7.639 8.147 8.972 8.972 8.580 8.580 D0m 14.014 14.014 13.214 13.214 13.329 13.329 13.073 13.073 EP01 1.160 1.206 1.200 1.199 1.274 1.274 1.238 1.287 CP2 0.022 0.022 0.020 0.022 0.022 0.022 0.022 0.027 EP45 0.511 0.531 1.058 1.058 0.796 0.796 0.786 0.786 EP56 1.038 1.019 0.697 0.697 0.670 0.670 1.204 1.204 CP6 0.022 0.041 0.040 0.040 0.022 0.022 0.032 0.032 EP67 1.146 1.146 0.747 0.747 1.186 1.186 0.697 0.697 L 7.631 7.778 7.630 7.580 7.781 7.781 7.257 7.257 SG71 1.593 1.593 1.598 1.598 1.602 1.602 1.375 1.375 SG72 1.140 1.140 1.371 1.371 1.546 1.546 1.308 1.308 EP12 0.668 0.622 0.509 0.552 0.617 0.617 0.508 0.462

[0156] In summary, the optical imaging lenses in Examples 1 to 8 satisfy the relationships shown in Table 11.

[0157] Table 11

[0158]

[0159]

[0160] This application also provides an electronic device equipped with the optical imaging lens described above. The electronic device can be a wearable device such as a VR headset, smartwatch, or smart glasses; a standalone imaging device such as a digital camera; or a mobile electronic device such as a mobile phone.

[0161] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An optical imaging lens, characterized in that, Comprising: A lens group, which is composed of a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens with optical powers arranged in sequence from the object side to the image side along the optical axis. Among them, the first lens has a positive optical power, the second lens has a negative optical power, and the seventh lens has a negative optical power; A support element group, including a first support element, which is placed between the first lens and the second lens and contacts the image side surface of the first lens; A lens barrel, which houses the lens group and the support element group; The optical imaging lens satisfies: 2.55 < d0m / EPD ≤ 2.69; 1.50 < d0s / d1s < 1.95; 1.45 < D0m / D0s < 1.80; and 0.90 < EP01 / CT1 < 1.15; Wherein, d0s is the inner diameter of the object side end face of the lens barrel, d0m is the inner diameter of the image side end face of the lens barrel, D0s is the outer diameter of the object side end face of the lens barrel, D0m is the outer diameter of the image side end face of the lens barrel, EPD is the entrance pupil diameter of the optical imaging lens, EP01 is the distance between the object side end face of the lens barrel and the object side surface of the first support element along the optical axis direction, CT1 is the central thickness of the first lens on the optical axis, and d1s is the inner diameter of the object side surface of the first support element.

2. The optical imaging lens according to claim 1, characterized in that, The optical imaging lens satisfies: 2.80 < d0s / DT11 < 3.65, where DT11 is the effective semi-aperture of the object side surface of the first lens.

3. The optical imaging lens according to claim 1, characterized in that, The optical imaging lens satisfies: 3.35 < d1s / CT1 ≤ 4.

10.

4. The optical imaging lens according to claim 1, characterized in that, The optical imaging lens meets the following requirement: 1.49mm -1 ≤f1 / CT1 / d1s<1.80mm -1 Where f1 is the effective focal length of the first lens.

5. The optical imaging lens according to claim 1, characterized in that, The optical imaging lens satisfies: 3.25 < D0s / DT11 < 3.90 and 2.35 < d0m / DT72 ≤ 2.5, where DT11 is the effective semi-aperture of the object side surface of the first lens, and DT72 is the effective semi-aperture of the image side surface of the seventh lens.

6. The optical imaging lens according to claim 1, characterized in that, The optical imaging lens satisfies:

4. < L / (CT1 + T12) < 6.50, where L is the maximum length of the lens barrel along the optical axis direction, and T12 is the air gap between the first lens and the second lens on the optical axis.

7. The optical imaging lens according to claim 1, characterized in that, The support element group further includes a second support element, which is placed between the second lens and the third lens and contacts the image side surface of the second lens; and The optical imaging lens satisfies: 1.70 < EP12 / T12 < 4.60, where EP12 is the distance between the image side surface of the first support element and the object side surface of the second support element along the optical axis direction, and T12 is the air gap between the first lens and the second lens on the optical axis.

8. The optical imaging lens according to claim 1, characterized in that, The support element group further includes a second support element, which is placed between the second lens and the third lens and contacts the image side surface of the second lens; and The optical imaging lens satisfies: 15.60 < T23 / CP2 ≤ 39.00, where T23 is the air gap between the second lens and the third lens on the optical axis, and CP2 is the maximum thickness of the second abutting element.

9. The optical imaging lens according to claim 1, characterized in that, The abutting element group further includes a fourth abutting element, a fifth abutting element, and a sixth abutting element. The fourth abutting element is disposed between the fourth lens and the fifth lens and contacts the image side surface of the fourth lens. The fifth abutting element is disposed between the fifth lens and the sixth lens and contacts the image side surface of the fifth lens. The sixth abutting element is disposed between the sixth lens and the seventh lens and contacts the image side surface of the sixth lens; and The optical imaging lens satisfies: 1.40 < (EP45 + EP56) / (CT5 + T56) < 2.20, where EP45 is the distance along the optical axis from the image side surface of the fourth abutting element to the object side surface of the fifth abutting element, EP56 is the distance along the optical axis from the image side surface of the fifth abutting element to the object side surface of the sixth abutting element, CT5 is the central thickness of the fifth lens on the optical axis, and T56 is the air gap between the fifth lens and the sixth lens on the optical axis.

10. The optical imaging lens according to claim 1, characterized in that, The abutting element group further includes a sixth abutting element and a seventh abutting element. The sixth abutting element is disposed between the sixth lens and the seventh lens and contacts the image side surface of the sixth lens. The seventh abutting element is disposed on the image side of the seventh lens and contacts the image side surface of the seventh lens; and The optical imaging lens satisfies: 1.15 < d7s / d6m < 11. The optical imaging lens according to any one of claims 1-10, characterized in that, ​ ​ 12. The optical imaging lens according to any one of claims 1-10, characterized in that, ​ 13. The optical imaging lens according to any one of claims 1-10, characterized in that, ​ The optical imaging lens satisfies: -20.60≤(SG72-SG71) / CP6<-2.05, where SG71 is the distance from the intersection of the object-side surface of the seventh lens and the optical axis to the image-side surface of the sixth support element along the optical axis, SG72 is the distance from the intersection of the image-side surface of the seventh lens and the optical axis to the object-side surface of the seventh support element along the optical axis, and CP6 is the maximum thickness of the sixth support element.

14. The optical imaging lens according to any one of claims 1-10, characterized in that, The object-side surface of the first lens is convex, and the image-side surface is concave. The object-side surface of the second lens is convex, and the image-side surface is concave. The third lens has positive or negative optical power, and its object side is convex while its image side is concave. The fourth lens has positive or negative optical power, and its object side is convex. The fifth lens has positive or negative optical power; The sixth lens has positive or negative optical power, and its object side is convex while its image side is concave. The object-side surface of the seventh lens is convex, and the image-side surface is concave.

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