Optical imaging lens

Abstract

The application discloses an optical imaging lens, which comprises a lens barrel, a lens set and a bearing piece set accommodated in the lens barrel, the lens set comprises first to seventh lenses with refractive powers arranged in sequence from an object side to an image side along an optical axis, wherein a difference between maximum outer diameters of the fourth lens and the fifth lens is less than a difference between maximum outer diameters of the fifth lens and the sixth lens; the bearing piece set comprises third, fourth and fifth bearing pieces; and the optical imaging lens satisfies 1.80<FNO / tan(Semi-FOV)<1.95, 7.75<EP45 / (CP4+CP5)<11.55 and 0.7<CT4 / EP34*N4<0.96.

Description

Technical Field

[0005] ,

[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 increasingly 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 the prior art, on the premise of ensuring that the optical imaging lens has a large aperture, after light enters the optical imaging lens, the thickness, shape, etc. of the lens will affect the progress and stability of the light. In a seven-piece optical imaging lens, when the radial step difference between the fifth lens and the sixth lens changes greatly, the light exit angle will be uneven, seriously affecting the clarity and resolution of the optical imaging lens, and further affecting the modulation transfer function (MTF) performance of the optical imaging lens. Summary of the Invention

[0004] One aspect of this application provides an optical imaging lens, including a lens barrel and a lens group and a support member group accommodated in the lens barrel. The number of lenses with optical power in the lens group is seven, including 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. Among them, the difference between the maximum outer diameters of the fourth lens and the fifth lens is less than the difference between the maximum outer diameters of the fifth lens and the sixth lens; the support member group includes a third support member, a fourth support member, and a fifth support member. The third support member is placed between the third lens and the fourth lens and contacts the image side surface of the third lens. The fourth support member is placed between the fourth lens and the fifth lens and contacts the image side surface of the fourth lens. The fifth support member is placed between the fifth lens and the sixth lens and contacts the image side surface of the fifth lens; and the optical imaging lens satisfies: 1.80 < FNO / tan(Semi - FOV) < 1.95; 7.75 < EP45 / (CP4 + CP5) < 11.55; and 0.7 < CT4 / EP34 * N4 < 0.96; where FNO is the f-number of the optical imaging lens, EP45 is the distance along the optical axis from the image side surface of the fourth support member to the object side surface of the fifth support member, CP4 is the maximum thickness of the fourth support member, CP5 is the maximum thickness of the fifth support member, CT4 is the central thickness of the fourth lens on the optical axis, EP34 is the distance along the optical axis from the image side surface of the third support member to the object side surface of the fourth support member, N4 is the refractive index of the fourth lens, and Semi - FOV is half of the maximum field angle of the optical imaging lens.

[0005] According to an exemplary embodiment of the present application, the support member group further includes a first support member disposed between the first lens and the second lens and in contact with the image side surface of the first lens; and the optical imaging lens satisfies: 3.1 < d0s / (EP01 + CT1) < 3.75, where d0s is the inner diameter of the object-side end surface of the lens barrel, EP01 is the distance along the optical axis between the object-side end surface of the lens barrel and the object-side surface of the first support member, and CT1 is the central thickness of the first lens on the optical axis.

[0006] According to an exemplary embodiment of the present application, the support member group further includes a first support member disposed between the first lens and the second lens and in contact with the image side surface of the first lens; and the optical imaging lens satisfies: 0.3 < f1 / (R1 + R2) < 0.5 and 1.95 < d0s / d1s < 2.1, where f1 is the effective focal length of the first lens, R1 is the radius of curvature of the object-side surface of the first lens, R2 is the radius of curvature of the image-side surface of the first lens, d0s is the inner diameter of the object-side end surface of the lens barrel, and d1s is the inner diameter of the object-side surface of the first support member.

[0007] According to an exemplary embodiment of the present application, the support member group further includes a first support member disposed between the first lens and the second lens and in contact with the image side surface of the first lens; and the optical imaging lens satisfies: 1.65 < EP01 / SG11 < 1.9, where EP01 is the distance along the optical axis between the object-side end surface of the lens barrel and the object-side surface of the first support member, and SG11 is the axial distance from the intersection of the object-side surface of the first lens and the optical axis to the non-effective diameter region of the object-side surface of the first lens.

[0008] According to an exemplary embodiment of the present application, the support member group further includes a second support member disposed between the second lens and the third lens and in contact with the image side surface of the second lens; and the optical imaging lens satisfies: 0.75 < EP23 / CT3 < 1.2, where EP23 is the distance along the optical axis from the image-side surface of the second support member to the object-side surface of the third support member, and CT3 is the central thickness of the third lens on the optical axis.

[0009] According to an exemplary embodiment of the present application, the optical imaging lens satisfies: 0.45 < EP45 / CT5 < 0.7, where CT5 is the central thickness of the fifth lens on the optical axis.

[0010] According to an exemplary embodiment of the present application, the optical imaging lens satisfies: 3.7 < f5 / d5s < 5.6, where f5 is the effective focal length of the fifth lens, and d5s is the inner diameter of the object-side surface of the fifth support member.

[0011] According to an exemplary embodiment of the present application, the optical imaging lens satisfies: 0.55 < (R10 - R9) / d5s < 1.05, where R9 is the radius of curvature of the object side surface of the fifth lens, R10 is the radius of curvature of the image side surface of the fifth lens, and d5s is the inner diameter of the object side surface of the fifth bearing member.

[0012] According to an exemplary embodiment of the present application, the optical imaging lens satisfies: 0.15 < (D5s - D4m) / d4s < 0.5, where D5s is the outer diameter of the object side surface of the fifth bearing member, D4m is the outer diameter of the image side surface of the fourth bearing member, and d4s is the inner diameter of the object side surface of the fourth bearing member.

[0013] According to an exemplary embodiment of the present application, the optical imaging lens satisfies: 10.35 < T34 / CP3 < 16.6, where T34 is the air gap between the third lens and the fourth lens on the optical axis, and CP3 is the maximum thickness of the third bearing member.

[0014] According to an exemplary embodiment of the present application, the optical imaging lens satisfies: 1.65 < EP01 / SG11 < 1.9, where 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 bearing member, and SG11 is the axial distance from the intersection of the object side surface of the first lens and the optical axis to the object side surface of the non-effective diameter region of the first lens.

[0015] According to an exemplary embodiment of the present application, the optical imaging lens satisfies: 5.0 < (d0s + D0m) / EPD < 5.75, where d0s is the inner diameter of the object side end face of the lens barrel, EPD is the entrance pupil diameter of the optical imaging lens, and D0m is the outer diameter of the image side end face of the lens barrel.

[0016] According to an exemplary embodiment of the present application, the optical imaging lens satisfies: 1.4 < d0m / d0s < 1.55, where d0m is the inner diameter of the image side end face of the lens barrel, and d0s is the inner diameter of the object side end face of the lens barrel.

[0017] According to an exemplary embodiment of the present application, the first bearing member contacts the object side surface of the second lens; the second bearing member contacts the object side surface of the third lens; the third bearing member contacts the object side surface of the fourth lens; the fourth bearing member contacts the object side surface of the fifth lens; the fifth bearing member contacts the object side surface of the sixth lens.

[0018] According to an exemplary embodiment of the present application, the first lens has a positive optical power, its object side is convex, and its image side is concave. The second lens has a negative optical power, its object side is convex, and its image side is concave. The third lens has a positive optical power, and its object side is convex. The fourth lens has a negative optical power, its object side is convex, and its image side is concave. The fifth lens has a positive optical power, its object side is concave, and its image side is convex. The sixth lens has a positive optical power, its object side is convex, and its image side is concave. The seventh lens has a negative optical power, its object side is convex, and its image side is concave.

[0019] Another aspect of the present application provides an optical imaging lens, including a lens barrel and a lens group and a support member group accommodated in the lens barrel. The number of lenses with optical power in the lens group is seven, including a first lens with a positive optical power, a second lens with a negative optical power, a third lens with a positive optical power, a fourth lens with a negative optical power, a fifth lens with a positive optical power, a sixth lens with a positive 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. Among them, the difference between the maximum outer diameters of the fourth lens and the fifth lens is less than the difference between the maximum outer diameters of the fifth lens and the sixth lens; the support member group includes a third support member, a fourth support member, and a fifth support member. The third support member is placed between the third lens and the fourth lens and contacts the image side of the third lens. The fourth support member is placed between the fourth lens and the fifth lens and contacts the image side of the fourth lens. The fifth support member is placed between the fifth lens and the sixth lens and contacts the image side of the fifth lens; and the optical imaging lens satisfies: 3.7 < f5 / d5s < 5.6; and 7.75 < EP45 / (CP4 + CP5) < 11.55, where f5 is the effective focal length of the fifth lens, d5s is the inner diameter of the object side of the fifth support member, EP45 is the distance along the optical axis from the image side of the fourth support member to the object side of the fifth support member, CP4 is the maximum thickness of the fourth support member, and CP5 is the maximum thickness of the fifth support member.

[0020] For the optical imaging lens provided in this application, by controlling 1.80 < FNO / tan(Semi - FOV) < 1.95, the optical imaging lens is ensured to have the feature of a large aperture. After light enters the optical imaging lens, the thickness, shape, etc. of the lens will affect the process and stability of the light. In particular, the radial step difference between the fifth lens and the sixth lens suddenly increases. The fifth lens is a large convex lens with a thin edge and a thick center, and the fourth lens is a lens with a high refractive index. Therefore, by controlling EP45 / (CP4 + CP5) and CT4 / EP34 * N4, the edge thickness of the fifth lens and the ratio of the edge thickness to the center thickness of the fourth lens are ensured to be within a certain range, accurately controlling the optical path of the lens, avoiding uneven light exit angles caused by uneven thickness inside the lens, thereby improving the clarity and resolution of the imaging of the optical imaging lens, helping to reduce the optical loss inside the lens, improving the light transmittance. At the same time, by controlling the edge thicknesses of the fourth lens and the fifth lens within the above range, a suitable tolerance sensitivity is ensured, reducing the influence of the edge thicknesses of the fourth lens and the fifth lens on the peak value of the MTF and the field curvature of the optical imaging lens, and improving the MTF performance. Brief Description of the Drawings

[0021] By reading the detailed description of the non - restrictive embodiments with reference to the following drawings, other features, objects, and advantages of this application will become more apparent. Among them:

[0022] Figure 1 Shows the structural layout diagram of an optical imaging lens of this application;

[0023] Figure 2 Shows the schematic diagram of some parameters of an optical imaging lens of this application;

[0024] Figure 3 Shows the structural schematic diagram of the optical imaging lens of Embodiment 1 of this application;

[0025] Figure 4 Shows the structural schematic diagram of the optical imaging lens of Embodiment 2 of this application;

[0026] 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;

[0027] Figure 6 Shows the structural schematic diagram of the optical imaging lens of Embodiment 3 of this application;

[0028] Figure 7 Shows the structural schematic diagram of the optical imaging lens of Embodiment 4 of this application;

[0029] 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.

[0030] Figure 9 A schematic diagram of the structure of the optical imaging lens of Embodiment 5 of this application is shown;

[0031] Figure 10 A schematic diagram of the structure of the optical imaging lens of Embodiment 6 of this application is shown;

[0032] 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.

[0033] Figure 12 A schematic diagram of the structure of the optical imaging lens of Embodiment 7 of this application is shown;

[0034] Figure 13 A schematic diagram of the optical imaging lens of Embodiment 8 of this application is shown.

[0035] 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.

[0036] Figure 15 The tolerance sensitivity curves of the optical imaging lens of this application are shown when FNO / tan(Semi-FOV)=1.92, EP45 / (CP4+CP5)=9.84 and CT4 / EP34*N4=0.92 are met;

[0037] Figure 16 The modulation transfer function curves of the optical imaging lens of this application are shown when FNO / tan(Semi-FOV)=1.92, EP45 / (CP4+CP5)=9.84 and CT4 / EP34*N4=0.92;

[0038] Figure 17 The tolerance sensitivity curves of the optical imaging lens of this application are shown when FNO / tan(Semi-FOV)=1.92, EP45 / (CP4+CP5)=11.6 and CT4 / EP34*N4=1.1;

[0039] Figure 18 The modulation transfer function curves of the optical imaging lens of this application are shown when FNO / tan(Semi-FOV)=1.92, EP45 / (CP4+CP5)=11.6 and CT4 / EP34*N4=1.1;

[0040] Figure 19 The tolerance sensitivity curves of the optical imaging lens of this application are shown when FNO / tan(Semi-FOV)=1.92, EP45 / (CP4+CP5)=7.5 and CT4 / EP34*N4=0.68 are satisfied;

[0041] Figure 20 The modulation transfer function curves of the optical imaging lens of this application are shown when FNO / tan(Semi-FOV)=1.92, EP45 / (CP4+CP5)=7.5 and CT4 / EP34*N4=0.68. Detailed Implementation

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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 support component 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, support component group, etc. of that embodiment.

[0049] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0050] Figure 1 An exemplary structural layout diagram and some parameters of an optical imaging lens according to this application are shown. Figure 2 A schematic diagram illustrating some parameters of an optical imaging lens according to this application is provided to facilitate a better understanding of this application. Figure 1As 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, 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 support member, d4s is the inner diameter of the object-side surface of the fourth support member, D4m is the outer diameter of the image-side surface of the fourth support member, d5s is the inner diameter of the object-side surface of the fifth support member, D5s is the outer diameter of the object-side surface of the fifth support member, 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 member, EP23 is the distance along the optical axis between the image-side surface of the second support member and the object-side surface of the third support member, and EP34 is the distance along the optical axis between the image-side surface of the third support member and the object-side surface of the third support member. EP45 is the distance along the optical axis from the image side of the fourth support member to the object side of the fifth support member; CP3 is the maximum thickness of the third support member; CP4 is the maximum thickness of the fourth support member; CP5 is the maximum thickness of the fifth support member; P0 is the lens barrel; P1 is the first support member; P2 is the second support member; P3 is the third support member; P4 is the fourth support member; P5 is the fifth support member; P6 is the sixth support member; E1 is the first lens; E2 is the second lens; E3 is the third lens; E4 is the fourth lens; E5 is the fifth lens; E6 is the sixth lens; E7 is the seventh lens. Figure 2 As shown, SG11 is the axial distance from the intersection of the object-side surface of the first lens and the optical axis to the non-effective diameter region of the object-side surface of the first lens. It should be noted that the non-effective diameter region of the object-side surface of the first lens here refers to the position closest to the object side within the non-effective diameter region of the object-side surface of the first lens.

[0051] 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 a gap along the optical axis, which may be an air gap.

[0052] In an exemplary embodiment, the first lens has positive optical power. The second lens has negative optical power. The third lens has positive optical power. The fourth lens has negative optical power. The fifth lens has positive optical power. The sixth lens has positive optical power. The seventh lens has negative optical power.

[0053] 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 either concave or convex. The object-side surface of the fourth lens is convex, and the image-side surface is concave. The object-side surface of the fifth lens is concave, and the image-side surface 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.

[0054] In an exemplary embodiment, the optical imaging lens further includes a lens barrel. A lens assembly and a support assembly 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.

[0055] 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 reduce 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 set at any position between or on one side of the lenses, depending on actual needs.

[0056] In an exemplary embodiment, the optical imaging lens further includes a support assembly, which may include at least one support member 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 support members; at least one support member may be disposed between any two adjacent lenses, and the entire optical imaging lens may include any number of support members. The support members help the optical imaging lens intercept excess reflective light paths, reduce stray light and ghosting, and improve image quality. The shapes of the support members may be the same or different, as long as they serve their respective functions.

[0057] In an exemplary embodiment, the support member group includes a first support member, a second support member, a third support member, a fourth support member, a fifth support member, and a sixth support member. The first support member is disposed between the first lens and the 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 member is disposed between the second lens and the 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 member is disposed between the third lens and the 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 member is disposed between the fourth lens and the 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 member is disposed between the fifth lens and the 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 member is disposed between the sixth lens and the 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.

[0058] In an exemplary embodiment, the difference between the maximum outer diameters of the fourth lens and the fifth lens is less than the difference between the maximum outer diameters of the fifth lens and the sixth lens. The optical imaging lens satisfies: 1.80 < FNO / tan(Semi-FOV) < 1.95, 7.75 < EP45 / (CP4 + CP5) < 11.55, and 0.7 < CT4 / EP34*N4 < 0.96, where FNO is the aperture number of the optical imaging lens, EP45 is the distance along the optical axis from the image side surface of the fourth support member to the object side surface of the fifth support member, CP4 is the maximum thickness of the fourth support member, CP5 is the maximum thickness of the fifth support member, CT4 is the central thickness of the fourth lens on the optical axis, EP34 is the distance along the optical axis from the image side surface of the third support member to the object side surface of the fourth support member, N4 is the refractive index of the fourth lens, and Semi-FOV is half of the maximum field angle of the optical imaging lens. It should be noted that the maximum outer diameter of the lens refers to the position where the outer ring surface of the lens is parallel to the optical axis.

[0059] By controlling 1.80 < FNO / tan(Semi-FOV) < 1.95, this application ensures that the optical imaging lens has the characteristic of a large aperture. After light enters the optical imaging lens, the thickness, shape, etc. of the lens will affect the progress and stability of the light. In particular, the radial step difference between the fifth lens and the sixth lens suddenly increases. The fifth lens is a large convex lens with a thin edge and a thick center, and the fourth lens is a lens with a high refractive index. Therefore, by controlling EP45 / (CP4 + CP5) and CT4 / EP34*N4, the edge thickness of the fifth lens and the ratio of the edge thickness to the center thickness of the fourth lens are ensured to be within a certain range, accurately controlling the optical path of the lens, avoiding uneven light exit angles inside the lens caused by uneven thickness, thereby improving the clarity and resolution of the optical imaging lens, helping to reduce the optical loss inside the lens, increasing the light transmittance. At the same time, by controlling the edge thicknesses of the fourth lens and the fifth lens within the above range, a suitable tolerance sensitivity is ensured, reducing the influence of the edge thicknesses of the fourth lens and the fifth lens on the peak value of the MTF and the field curvature of the optical imaging lens, and improving the MTF performance.

[0060] Figure 15 and Figure 16 respectively show the tolerance sensitivity curve and the modulation transfer function curve of the optical imaging lens of this application when FNO / tan(Semi-FOV) = 1.92, EP45 / (CP4 + CP5) = 9.84, and CT4 / EP34*N4 = 0.92;

[0061] Figure 17 and Figure 18 respectively show the tolerance sensitivity curve and the modulation transfer function curve of the optical imaging lens of this application when FNO / tan(Semi-FOV) = 1.92, EP45 / (CP4 + CP5) = 11.6, and CT4 / EP34*N4 = 1.1;

[0062] Figure 19 and Figure 20 respectively show the tolerance sensitivity curve and the modulation transfer function curve of the optical imaging lens of this application when FNO / tan(Semi-FOV) = 1.92, EP45 / (CP4 + CP5) = 7.5, and CT4 / EP34*N4 = 0.68.

[0063] Figure 15 and Figure 16The optical imaging lens in satisfies the ranges defined by the conditional expressions FNO / tan(Semi-FOV) = 1.92, EP45 / (CP4 + CP5), and CT4 / EP34 * N4 of the present application. On the premise of ensuring a large aperture of the optical imaging lens, it can accurately control the optical path of the lens, avoid uneven light exit angles inside the lens caused by uneven thickness, thereby improving the imaging clarity and resolution of the optical imaging lens, helping to reduce the optical loss inside the lens, and improving the light transmittance. At the same time, by controlling the edge thicknesses of the fourth lens and the fifth lens within the above ranges, a suitable tolerance sensitivity is ensured, and the influence of the edge thicknesses of the fourth lens and the fifth lens on the peak value of the MTF and the field curvature of the optical imaging lens is reduced. As can be seen from the figure, the defocus curve is relatively concentrated, and the MTF peak value is relatively high, effectively reducing the tolerance sensitivity.

[0064] Figure 17 and Figure 18 The optical imaging lens in exceeds the ranges defined by the conditional expressions EP45 / (CP4 + CP5) and CT4 / EP34 * N4 of the present application. On the premise of a large aperture of the optical imaging lens, due to the excessive distance between the fourth bearing member and the fifth bearing member along the optical axis direction, the light passing through the fifth lens becomes steeper. As can be seen from the figure, the MTF peak value decreases, and the tolerance sensitivity deteriorates. Moreover, the distance along the optical axis direction from the image side surface of the third bearing member to the object side surface of the fourth bearing member becomes smaller, resulting in the optical imaging lens being more sensitive to eccentricity and tilt, and the overall field curvature increases, affecting the imaging effect.

[0065] Figure 19 and Figure 20 The optical imaging lens in exceeds the ranges defined by the conditional expressions EP45 / (CP4 + CP5) and CT4 / EP34 * N4 of the present application. On the premise of a large aperture of the optical imaging lens, due to the过小 distance between the fourth bearing member and the fifth bearing member along the optical axis direction, the sensitivity of the edge surface shape of the light passing through the fifth lens increases, and the peak value of the edge field of view decreases. At the same time, the distance along the optical axis direction from the image side surface of the third bearing member to the object side surface of the fourth bearing member becomes larger, resulting in a decrease in the sensitivity of the optical imaging lens to eccentricity and tilt, but the peripheral light propagation becomes steeper, and the peak value of the edge field of view significantly decreases, affecting the imaging effect.

[0066] In an exemplary embodiment, the optical imaging lens satisfies: 3.1 < d0s / (EP01 + CT1) < 3.75, where d0s is the inner diameter of the object side end face of the lens barrel, EP01 is the distance along the optical axis direction between the object side end face of the lens barrel and the object side surface of the first bearing member, and CT1 is the central thickness of the first lens on the optical axis. By controlling the above conditions, it helps to avoid the highest point of the object side surface of the first lens protruding from the object side end face of the lens barrel, prevent the object side surface of the first lens from being scratched during assembly or finished product transportation, and further reduce the risk of a decrease in the imaging clarity of the optical imaging lens.

[0067] In an exemplary embodiment, the optical imaging lens satisfies: 0.75 < EP23 / CT3 < 1.2, where EP23 is the distance from the image side of the second bearing member to the object side of the third bearing member along the optical axis direction, and CT3 is the central thickness of the third lens on the optical axis. By controlling the above conditions, it helps to make the overall structure of the third lens uniform, avoid the risk of molding defects caused by excessive difference between the edge thickness and the central thickness, especially avoid the serious deformation of the edge when the third lens is demolded, which reduces the roundness of the mating position of the object side of the third lens, and further reduces the risk of the decline of the MTF performance after assembly.

[0068] In an exemplary embodiment, the optical imaging lens satisfies: 0.45 < EP45 / CT5 < 0.7, where EP45 is the distance from the image side of the fourth bearing member to the object side of the fifth bearing member along the optical axis direction, and CT5 is the central thickness of the fifth lens on the optical axis. By controlling the above conditions, it helps to avoid risks such as weld lines, gas entrapment or demolding deformation during the molding of the fifth lens due to an excessive ratio of the edge thickness to the central thickness of the fifth lens, thereby reducing the risk of defects in the surface shape of the fifth lens and improving the effectiveness and authenticity of the final imaging of the optical imaging lens.

[0069] In an exemplary embodiment, the optical imaging lens satisfies: 3.7 < f5 / d5s < 5.6, where f5 is the effective focal length of the fifth lens and d5s is the inner diameter of the object side of the fifth bearing member. By controlling the above conditions, it helps to control the overall processability of the fifth lens while ensuring the formation of complementary optical power for the light passing through the fifth lens; at the same time, controlling the inner diameter of the object side of the fifth bearing member can avoid the risk of reducing the effectiveness of imaging due to intercepting effective imaging light when the inner diameter is too small; when the inner diameter is too large, it will cause light leakage or fail to effectively intercept non-effective imaging light, resulting in noise points on the image plane and reducing the authenticity of the entire image plane.

[0070] In an exemplary embodiment, the optical imaging lens satisfies: 0.55 < (R10 - R9) / d5s < 1.05, where R9 is the curvature radius of the object side of the fifth lens, R10 is the curvature radius of the image side of the fifth lens, and d5s is the inner diameter of the object side of the fifth bearing member. By controlling the above conditions, it helps to avoid the risk of edge reverse curvature on the edge of the image side of the fifth lens, and further avoid the risk of stray light generated by the inner reverse light of the fifth lens passing through the gap to the image plane due to an excessive gap between the inner diameter of the object side of the fifth bearing member and the edge of the effective diameter region of the fifth lens.

[0071] In an exemplary embodiment, the optical imaging lens satisfies: 0.15 < (D5s - D4m) / d4s < 0.5, where D5s is the outer diameter of the object side surface of the fifth bearing member, D4m is the outer diameter of the image side surface of the fourth bearing member, and d4s is the inner diameter of the object side surface of the fourth bearing member. By controlling the above conditions, it helps to ensure a uniform transition in the wall thickness at the bearing location of the fifth lens of the lens barrel, avoid the risk of sudden changes in the lens barrel thickness resulting in molding defects such as sink marks and gas entrapment, and improve the stability and strength of the overall lens assembly.

[0072] In an exemplary embodiment, the optical imaging lens satisfies: 10.35 < T34 / CP3 < 16.6, where T34 is the air gap between the third lens and the fourth lens on the optical axis, and CP3 is the maximum thickness of the third bearing member. By controlling the above conditions, it helps to ensure that the distance between the effective diameter edge of the image side surface of the third lens and the effective diameter edge of the object side surface of the fourth lens is neither too large nor too small after the third bearing member is placed, can prevent non-effective light rays from passing through the lens and imaging on the imaging surface, and can also prevent interference between the inner side of the third bearing member and the effective diameter edges of the image side surface of the third lens and the object side surface of the fourth lens respectively, thereby improving the imaging quality and authenticity of the optical imaging lens.

[0073] In an exemplary embodiment, the bearing member group further includes a first bearing member, which is placed between the first lens and the second lens and contacts the image side surface of the first lens; and the optical imaging lens satisfies: 0.3 < f1 / (R1 + R2) < 0.5; and 1.95 < d0s / d1s < 2.1; where f1 is the effective focal length of the first lens, R1 is the curvature radius of the object side surface of the first lens, R2 is the curvature radius of the image side surface of the first lens, d0s is the inner diameter of the object side end face of the lens barrel, and d1s is the inner diameter of the object side surface of the first bearing member. By controlling the above conditions, it helps to avoid the situation where the center thickness of the first lens is too large while the edge aperture of the lens is too small, maximally reduce the probability of weld lines generated during the molding of the first lens remaining in the effective diameter area, maximally improve the imaging clarity, and obtain high-quality imaging. Exemplarily, 0.3 < f1 / (R1 + R2) < 0.45.

[0074] In an exemplary embodiment, the optical imaging lens satisfies: 1.65 < EP01 / SG11 < 1.9, where 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 bearing member, and SG11 is the axial distance from the intersection of the object-side surface of the first lens and the optical axis to the non-effective diameter region of the object-side surface of the first lens. By controlling the above conditions, it helps to ensure that the thickness of the diaphragm hole at the front end of the lens barrel is neither too thick nor too thin. If it is too thick, although the assembly strength at the front end of the lens barrel is ensured, the front end protrudes too much, posing a risk of blocking the marginal light rays of the maximum field angle and causing a reduction in the imaging area. If it is too thin, although the imaging light rays within the field angle are ensured not to be blocked, the front end of the lens barrel is too thin and its strength is low, making it extremely easy to deform or crack during the lens assembly under pressure, affecting the imaging quality of the optical imaging lens.

[0075] In an exemplary embodiment, the optical imaging lens satisfies: 5.0 < (d0s + D0m) / EPD < 5.75, where d0s is the inner diameter of the object-side end face of the lens barrel, EPD is the entrance pupil diameter of the optical imaging lens, and D0m is the outer diameter of the image-side end face of the lens barrel. By controlling the above conditions, for an optical imaging lens with a large field angle, it helps to avoid the risk that the actual field angle is too large and lower than the theoretical design value due to the ratio of (d0s + D0m) / EPD being too small, which affects the chief ray angle of incidence (CRA) and relative illumination (RI) of the imaging, and at the same time, it can also avoid the risk that the head of the front end of the lens barrel is too large due to the ratio of (d0s + D0m) / EPD being too large, resulting in the lens module occupying a large space when assembled into the device or interfering with other components of the device.

[0076] In an exemplary embodiment, the optical imaging lens satisfies: 1.4 < d0m / d0s < 1.55, where d0m is the inner diameter of the image-side end face of the lens barrel and d0s is the inner diameter of the object-side end face of the lens barrel. By controlling the above conditions, it helps with the design of the lens assembly and the bearing fixture. At the same time, the limitation of the inner diameter of the image-side end face of the lens barrel is very beneficial for the extinction of non-effective imaging light rays of the last lens on the imaging surface side, effectively avoiding the generation of stray light or light leakage that affects the imaging quality.

[0077] In an exemplary embodiment, the first bearing member contacts the object-side surface of the second lens; the second bearing member contacts the object-side surface of the third lens; the third bearing member contacts the object-side surface of the fourth lens; the fourth bearing member contacts the object-side surface of the fifth lens; the fifth bearing member contacts the object-side surface of the sixth lens. The image-side surfaces of the bearing members in the bearing member group all at least partially contact the object-side surface of the subsequent lens to ensure that the bearing members are fixed within the allowable range designed for the lens, avoiding the interception of effective imaging light rays or the penetration of non-imaging light rays to the imaging surface due to the movement of the bearing members in the optical axis direction, which affects the optical performance such as the imaging quality, RI, and CRA.

[0078] Another aspect of the present application provides an optical imaging lens, which includes a lens barrel, a lens group and a support member group accommodated in the lens barrel. The number of lenses in the lens group is seven, including a first lens with a positive optical power, a second lens with a negative optical power, a third lens with a positive optical power, a fourth lens with a negative optical power, a fifth lens with a positive optical power, a sixth lens with a positive optical power, and a seventh lens with a negative optical power, which are arranged in sequence from the object side to the image side along the optical axis. Among them, the difference between the maximum outer diameters of the fourth lens and the fifth lens is less than the difference between the maximum outer diameters of the fifth lens and the sixth lens; the support member group includes a third support member, a fourth support member and a fifth support member. The third support member is placed between the third lens and the fourth lens and contacts the image side surface of the third lens. The fourth support member is placed between the fourth lens and the fifth lens and contacts the image side surface of the fourth lens. The fifth support member is placed between the fifth lens and the sixth lens and contacts the image side surface of the fifth lens; and the optical imaging lens satisfies: 3.7 < f5 / d5s < 5.6; and 7.75 < EP45 / (CP4 + CP5) < 11.55, where f5 is the effective focal length of the fifth lens, d5s is the inner diameter of the object side surface of the fifth support member, EP45 is the distance along the optical axis from the image side surface of the fourth support member to the object side surface of the fifth support member, CP4 is the maximum thickness of the fourth support member, and CP5 is the maximum thickness of the fifth support member.

[0079] By controlling the above conditions, the present application helps to satisfy the complementary front and rear optical powers of each lens in the lens and ensure good processability of the lens. After being placed, the support members all contact the object side surfaces of the lenses, in order to prevent the support members from moving in the optical axis direction, resulting in the inner diameter of the object side surface of the support member intercepting light excessively or allowing light to penetrate to the imaging surface, so that the ability of the imaged picture to restore real things is much lower than the design requirements, or non-effective imaging light penetrates to the imaging surface to form an image, resulting in serious stray light phenomenon on the image surface and reducing the authenticity and effectiveness of imaging.

[0080] 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 members constituting the optical imaging lens can be changed to obtain the various results and advantages described in this specification.

[0081] The following further describes specific embodiments of the optical imaging lens applicable to the above embodiments with reference to the accompanying drawings. Specifically, refer to Figures 3 to 5 Describe the optical imaging lens according to Embodiment 1 and Embodiment 2 of the present application; refer to Figures 6 to 8 Describe the optical imaging lens according to Embodiment 3 and Embodiment 4 of the present application; refer to Figures 9 to 11 Describe the optical imaging lens according to Embodiment 5 and Embodiment 6 of the present application; refer to Figures 12 to 14 Describe the optical imaging lens according to Embodiment 7 and Embodiment 8 of the present application.

[0082] Example 1

[0083] 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 assembly. 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.

[0084] 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 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. The difference in the maximum outer diameter between the fourth and fifth lenses is less than the difference in the maximum outer diameter between the fifth and sixth lenses.

[0085] The support assembly includes a first support P1, a second support P2, a third support P3, a fourth support P4, a fifth support P5, and a sixth support P6. The first support 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 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 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 support member 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 support member 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 support member 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.

[0086] 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.

[0087] 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).

[0088] Table 1

[0089]

[0090]

[0091] 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:

[0092]

[0093] 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.

[0094] Table 2

[0095]

[0096] Example 2

[0097] 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 assembly. 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 assembly includes a first support P1, a second support P2, a third support P3, a fourth support P4, a fifth support P5, and a sixth support P6.

[0098] 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.

[0099] The difference between this embodiment and Embodiment 1 is that the structural dimensions of at least some components in the lens barrel P0 and the support assembly are different.

[0100] 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.

[0101] Example 3

[0102] 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 assembly. 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.

[0103] 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 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 positive optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. 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. The difference in the maximum outer diameter between the fourth and fifth lenses is less than the difference in the maximum outer diameter between the fifth and sixth lenses.

[0104] The support assembly includes a first support P1, a second support P2, a third support P3, a fourth support P4, a fifth support P5, and a sixth support P6. The first support 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 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 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 support member 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 support member 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 support member 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.

[0105] 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.

[0106] 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).

[0107] Table 3

[0108]

[0109] 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.

[0110] Table 4

[0111]

[0112]

[0113] Example 4

[0114] 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 assembly. 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 assembly includes a first support P1, a second support P2, a third support P3, a fourth support P4, a fifth support P5, and a sixth support P6.

[0115] 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.

[0116] The difference between this embodiment and embodiment 3 is that the structural dimensions of at least some components in the lens barrel P0 and the support assembly are different.

[0117] 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.

[0118] Example 5

[0119] 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 assembly. 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.

[0120] 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 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. The difference in the maximum outer diameter between the fourth and fifth lenses is less than the difference in the maximum outer diameter between the fifth and sixth lenses.

[0121] The support assembly includes a first support P1, a second support P2, a third support P3, a fourth support P4, a fifth support P5, and a sixth support P6. The first support 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 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 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 support member 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 support member 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 support member 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.

[0122] 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.

[0123] 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).

[0124] Table 5

[0125]

[0126] 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.

[0127] Table 6

[0128]

[0129] Example 6

[0130] 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 assembly. 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 assembly includes a first support P1, a second support P2, a third support P3, a fourth support P4, a fifth support P5, and a sixth support P6.

[0131] 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.

[0132] The difference between this embodiment and embodiment 5 is that the structural dimensions of at least some components in the lens barrel P0 and the support assembly are different.

[0133] 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.

[0134] Example 7

[0135] Figure 12A 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 assembly. 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.

[0136] 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 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. The difference in the maximum outer diameter between the fourth and fifth lenses is less than the difference in the maximum outer diameter between the fifth and sixth lenses.

[0137] The support assembly includes a first support P1, a second support P2, a third support P3, a fourth support P4, a fifth support P5, and a sixth support P6. The first support 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 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 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 support member 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 support member 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 support member 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.

[0138] 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.

[0139] 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).

[0140] Table 7

[0141]

[0142]

[0143] 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.

[0144] Table 8

[0145]

[0146] Example 8

[0147] 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 assembly. 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 assembly includes a first support P1, a second support P2, a third support P3, a fourth support P4, a fifth support P5, and a sixth support P6.

[0148] 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.

[0149] The difference between this embodiment and embodiment 7 is that the structural dimensions of at least some of the components in the lens barrel P0 and the support assembly are different.

[0150] 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.

[0151] Table 9 provides the parameter values ​​of FNO, Semi-FOV, f, f1, f2, f3, f4, f5, f6, f7, and SG11 for each of Examples 1 to 8.

[0152] Table 9

[0153]

[0154] Table 10 provides the parameter values ​​for at least some of the components in the lens barrel P0 and the support assembly in each of Embodiments 1 to 8. Some of these parameters can be obtained according to... Figure 1 The measurements were obtained using the annotation method shown, and the units of the parameters listed in Table 10 are all millimeters (mm).

[0155] Table 10

[0156]

[0157]

[0158] In summary, the optical imaging lenses in Examples 1 to 8 satisfy the relationships shown in Table 11.

[0159] Table 11

[0160] Conditional / Example 1 2 3 4 5 6 7 8 FNO / tan(Semi-FOV) 1.92 1.92 1.85 1.85 1.88 1.88 1.85 1.85 EP45 / (CP4+CP5) 9.84 9.84 10.41 10.50 11.52 11.50 7.77 8.00 CT4 / EP34*N4 0.92 0.84 0.91 0.83 0.94 0.94 0.80 0.75 f5 / d5s 3.75 3.75 4.28 4.28 5.56 5.50 4.31 4.29 (D5s-D4m) / d4s 0.37 0.37 0.37 0.19 0.38 0.37 0.48 0.45 EP45 / CT5 0.49 0.49 0.62 0.63 0.66 0.66 0.54 0.55 EP23 / CT3 1.15 0.98 1.02 0.92 0.80 0.81 1.07 0.98 (d0s+D0m) / EPD 5.04 5.25 5.22 5.22 5.19 5.19 5.23 5.70 d0s / (EP01+CT1) 3.30 3.39 3.25 3.33 3.14 3.22 3.72 3.69 d0m / d0s 1.44 1.44 1.50 1.49 1.51 1.49 1.54 1.54 T34 / CP3 11.10 11.10 16.56 16.56 10.37 10.37 16.05 16.05 (R10-R9) / d5s 0.76 0.76 0.65 0.65 0.59 0.59 1.04 1.03 f1 / (R1+R2) 0.33 0.33 0.38 0.38 0.43 0.43 0.44 0.44 d0s / d1s 2.08 2.06 2.06 2.03 2.00 1.98 2.04 2.05 EP01 / SG11 1.88 1.78 1.88 1.78 1.88 1.78 1.69 1.71

[0161] 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.

[0162] 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 including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens 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, its object side is convex, and its image side is concave; The second lens has a negative optical power, its object side is convex, and its image side is concave; The third lens has a positive optical power, its object side is convex, and its image side is convex or concave; The fourth lens has a negative optical power, its object side is convex, and its image side is concave; The fifth lens has a positive optical power, its object side is concave, and its image side is convex; The sixth lens has a positive optical power, its object side is convex, and its image side is concave; The seventh lens has a negative optical power, its object side is convex, and its image side is concave; The difference between the maximum outer diameters of the fourth lens and the fifth lens is less than the difference between the maximum outer diameters of the fifth lens and the sixth lens; A support member group including a third support member, a fourth support member, and a fifth support member. The third support member is placed between the third lens and the fourth lens and contacts the image side of the third lens. The fourth support member is placed between the fourth lens and the fifth lens and contacts the image side of the fourth lens. The fifth support member is placed between the fifth lens and the sixth lens and contacts the image side of the fifth lens; and A lens barrel for accommodating the lens group and the support member group; The number of lenses with optical power in the optical imaging lens is seven; The optical imaging lens satisfies: 1.85 ≤ FNO / tan(Semi - FOV) < 1.95; 7.75 < EP45 / (CP4 + CP5) < 11.55; and 0.75≤CT4 / EP34 N4<0.96; 3.75 ≤ f5 / d5s < 5.6; Where, FNO is the f - number of the optical imaging lens, EP45 is the distance along the optical axis from the image side of the fourth support member to the object side of the fifth support member, CP4 is the maximum thickness of the fourth support member, CP5 is the maximum thickness of the fifth support member, CT4 is the central thickness of the fourth lens on the optical axis, EP34 is the distance along the optical axis from the image side of the third support member to the object side of the fourth support member, N4 is the refractive index of the fourth lens, Semi - FOV is half of the maximum field angle of the optical imaging lens, f5 is the effective focal length of the fifth lens, and d5s is the inner diameter of the object side of the fifth support member.

2. The optical imaging lens according to claim 1, characterized in that, The support member group further includes a first support member, and the first support member is placed between the first lens and the second lens and contacts the image side of the first lens; and The optical imaging lens satisfies: 3.1 < d0s / (EP01 + CT1) < 3.75, where d0s is the inner diameter of the object - side end face of the lens barrel, EP01 is the distance along the optical axis between the object - side end face of the lens barrel and the object side of the first support member, and CT1 is the central thickness of the first lens on the optical axis.

3. The optical imaging lens according to claim 1, characterized in that, The bearing member group further includes a first bearing member, which is disposed between the first lens and the second lens and contacts the image side surface of the first lens; and The optical imaging lens satisfies: 0.3 < f1 / (R1+R2) ≤ 0.44 and 1.95 < d0s / d1s < 2.1, where f1 is the effective focal length of the first lens, R1 is the curvature radius of the object side surface of the first lens, R2 is the curvature radius of the image side surface of the first lens, d0s is the inner diameter of the object side end surface of the lens barrel, and d1s is the inner diameter of the object side surface of the first bearing member.

4. The optical imaging lens according to claim 1, characterized in that, The bearing member group further includes a first bearing member, which is disposed between the first lens and the second lens and contacts the image side surface of the first lens; and The optical imaging lens satisfies: 1.65 < EP01 / SG11 < 1.9, where EP01 is the distance between the object side end surface of the lens barrel and the object side surface of the first bearing member along the optical axis direction, and SG11 is the axial distance from the intersection of the object side surface of the first lens and the optical axis to the non-effective diameter region of the object side surface of the first lens.

5. The optical imaging lens according to claim 1, characterized in that, The bearing member group further includes a second bearing member, which is disposed between the second lens and the third lens and contacts the image side surface of the second lens; and The optical imaging lens satisfies: 0.80 ≤ EP23 / CT3 ≤ 1.15, where EP23 is the distance between the image side surface of the second bearing member and the object side surface of the third bearing member along the optical axis direction, and CT3 is the central thickness of the third lens on the optical axis.

6. The optical imaging lens according to any one of claims 1-5, characterized in that, The optical imaging lens satisfies: 0.45 < EP45 / CT5 < 0.7, where CT5 is the central thickness of the fifth lens on the optical axis.

7. The optical imaging lens according to any one of claims 1-5, characterized in that, The optical imaging lens satisfies: 0.55 < (R10-R9) / d5s < 1.05, where R9 is the curvature radius of the object side surface of the fifth lens, R10 is the curvature radius of the image side surface of the fifth lens, and d5s is the inner diameter of the object side surface of the fifth bearing member.

8. The optical imaging lens according to any one of claims 1-5, characterized in that, The optical imaging lens satisfies: 0.15 < (D5s-D4m) / d4s < 0.5, where D5s is the outer diameter of the object side surface of the fifth bearing member, D4m is the outer diameter of the image side surface of the fourth bearing member, and d4s is the inner diameter of the object side surface of the fourth bearing member.

9. The optical imaging lens according to any one of claims 1-5, characterized in that, The optical imaging lens satisfies: 10.35 < T34 / CP3 < 16.6, where T34 is the air gap between the third lens and the fourth lens on the optical axis, and CP3 is the maximum thickness of the third bearing member.

10. The optical imaging lens according to any one of claims 1-5, characterized in that, The optical imaging lens satisfies: 5.0 < (d0s+D0m) / EPD ≤ 5.70, where d0s is the inner diameter of the object side end surface of the lens barrel, EPD is the entrance pupil diameter of the optical imaging lens, and D0m is the outer diameter of the image side end surface of the lens barrel.

11. The optical imaging lens according to any one of claims 1-5, characterized in that, The optical imaging lens satisfies: 1.4 < d0m / d0s < 1.55, where d0m is the inner diameter of the image side end surface of the lens barrel, and d0s is the inner diameter of the object side end surface of the lens barrel.

Images