Optical imaging lens

Abstract

The application discloses an optical imaging lens, which comprises an imaging lens group and multiple interval elements. The imaging lens group comprises 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 along an optical axis from a subject side to an image side. The multiple interval elements comprise a second interval element arranged on an image side surface of the second lens and at least partially in contact with the second lens, and a third interval element arranged on an image side surface of the third lens and at least partially in contact with the third lens. An inner diameter d3m of the image side surface of the third interval element, an outer diameter D3m of the image side surface of the third interval element, an interval EP23 of the second interval element and the third interval element along the optical axis, a maximum thickness CP3 of the third interval element, an air interval T23 of the second lens and the third lens on the optical axis, and a central thickness CT3 of the third lens on the optical axis satisfy the following condition: D3m / (EP23+CP3)+d3m / (T23+CT3)>10.0.

Description

[0001] Divisional application statement

[0002] This application is a divisional application of Chinese invention patent application filed on April 28, 2022, entitled "Optical Imaging Lens" and with application number 202210462816.0. Technical Field

[0003] This application relates to the field of optical components, and more specifically, to an optical imaging lens. Background Technology

[0004] Currently, as customers demand increasingly higher aesthetic appeal from mobile phone manufacturers, and mobile phone manufacturers place higher demands on camera functionality, the number of optical lenses in mobile phones is increasing, while the space occupied by a single lens is decreasing. Miniaturization of modules has gradually become a common goal pursued by lens suppliers and module manufacturers. At the same time, the proper coordination between the spacer element, lens barrel structure, and lens is also crucial to ensuring optical imaging quality. In existing technologies, improper arrangement of the spacer element, lens barrel structure, and lens can easily lead to problems such as stray light and structural instability in the lens.

[0005] Therefore, there is still much room for exploration in how to reasonably arrange multiple lenses and spacers to improve their assembly stability, reduce stray light, and optimize the appearance and structure of the lens while ensuring that the optical imaging specifications remain unchanged. Summary of the Invention

[0006] This application provides an optical imaging lens comprising: an imaging 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 sequentially along the optical axis from the object side to the image side; and a plurality of spacer elements, including a fourth spacer element disposed on the image side of the fourth lens and in at least partial contact with the fourth lens, and a fifth spacer element disposed on the image side of the fifth lens and in at least partial contact with the fifth lens; wherein, at least two of the first to fourth lenses have concave object sides or image sides; the object side of the first lens and the object side of the fifth lens have opposite surface profiles; and the inner diameter d5s of the object side of the fifth spacer element, the outer diameter D5s of the object side of the fifth spacer element, the spacing EP45 between the fourth and fifth spacer elements along the optical axis, the maximum thickness CP5 of the fifth spacer element, the radius of curvature R8 of the image side of the fourth lens, and the radius of curvature R9 of the object side of the fifth lens satisfy: -10.0 < (D5s - d5s) / (EP45 + CP5) + R8 / R9 < 10.0.

[0007] This application also provides an optical imaging lens comprising: an imaging 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 sequentially along the optical axis from the object side to the image side; and a plurality of spacer elements, including a second spacer element disposed on the image side side of the second lens and in at least partial contact with the second lens, and a third spacer element disposed on the image side side of the third lens and in at least partial contact with the third lens; wherein the inner diameter d3m of the image side side of the third spacer element, the outer diameter D3m of the image side side of the third spacer element, the spacing EP23 between the second spacer element and the third spacer element along the optical axis, the maximum thickness CP3 of the third spacer element, the air gap T23 between the second lens and the third lens on the optical axis, and the center thickness CT3 of the third lens on the optical axis satisfy: D3m / (EP23+CP3)+d3m / (T23+CT3)>10.0.

[0008] In one embodiment, the inner diameter d5s of the object side of the fifth spacer, the outer diameter D5s of the object side of the fifth spacer, the spacing EP45 between the fourth and fifth spacers along the optical axis, the maximum thickness CP5 of the fifth spacer, the radius of curvature R8 of the image side of the fourth lens, and the radius of curvature R9 of the object side of the fifth lens satisfy: -5.0 < (D5s - d5s) / (EP45 + CP5) + R8 / R9 < 5.0.

[0009] In one embodiment, the image-side surface of the first lens is concave; the image-side surface of the third lens is also concave.

[0010] In one embodiment, the optical imaging lens further includes a first lens barrel for accommodating at least a portion of the imaging lens group or spacer element, the first lens barrel having an inner wall perpendicular to the optical axis, the object side of the first lens being in at least partial contact with the inner wall of the first lens barrel perpendicular to the optical axis, and the bandwidth of the contact being greater than or equal to 0.05 mm, and the flatness of the inner wall of the first lens barrel perpendicular to the optical axis being less than 0.001 mm.

[0011] In one embodiment, the optical imaging lens further includes a first lens barrel for accommodating at least a portion of the imaging lens group or spacer element, the first lens barrel having a front end face facing the subject; wherein the minimum inner diameter ds of the front end portion of the first lens barrel facing the subject, the outer diameter D0s of the front end face of the first lens barrel, the radius of curvature R1 of the object side of the first lens and the radius of curvature R2 of the image side of the first lens satisfy: D0s / ds-R1 / R2>0.5.

[0012] In one embodiment, the fourth lens has positive optical power, with its object-side surface being convex and its image-side surface being convex.

[0013] In one embodiment, the sixth lens has positive optical power and its object-side surface is convex.

[0014] In one embodiment, the plurality of spacers further includes a second spacer element disposed on the image-side surface of the second lens and in at least partial contact with the second lens; the outer diameter D2m of the image-side surface of the second spacer element, the maximum diameter DP2 of the second lens, the radius of curvature R3 of the object-side surface of the second lens, the radius of curvature R4 of the image-side surface of the second lens, and the effective focal length f2 of the second lens satisfy: D2m / DP2-(R4-R3) / f2>0.2.

[0015] In one embodiment, the optical imaging lens further includes a first lens barrel for accommodating at least a portion of the imaging lens group or spacer element. The first lens barrel has a front end face facing the subject and a rear end face facing the imaging side. The half-diagonal length of the effective pixel area on the imaging surface of the optical imaging lens, ImgH, the axial distance TD from the object side of the first lens to the image side of the last lens, the outer diameter D0m of the rear end face of the first lens barrel, the inner diameter d0m of the rear end face of the first lens barrel, and the distance L from the front end face of the first lens barrel to its rear end face satisfy: ImgH / TD / [(D0m-d0m) / L]>1.0.

[0016] In one embodiment, the plurality of spacers further includes a third spacer element disposed on the image-side surface of the third lens and in at least partial contact with the third lens; the inner diameter d3m of the image-side surface of the third spacer element, the outer diameter D3m of the image-side surface of the third spacer element, the spacing EP23 between the second and third spacers along the optical axis, the maximum thickness CP3 of the third spacer element, the air gap T23 between the second and third lenses on the optical axis, and the center thickness CT3 of the third lens on the optical axis satisfy: D3m / (EP23+CP3)+d3m / (T23+CT3)>10.0.

[0017] In one embodiment, the maximum diameter DP4 of the fourth lens, the maximum diameter DP5 of the fifth lens, the outer diameter D4m of the image side of the fourth spacer element, the outer diameter D5m of the image side of the fifth spacer element, the center thickness CT4 of the fourth lens on the optical axis, and the center thickness CT5 of the fifth lens on the optical axis satisfy: (DP4 / D4m+DP5 / D5m) / (CT4+CT5)>0.5.

[0018] In one embodiment, the optical imaging lens further includes a first lens barrel for accommodating at least a portion of the imaging lens group or spacer elements, and the plurality of spacer elements further includes a first spacer element disposed on the image-side surface of the first lens and in at least partial contact with the first lens; the distance EP01 between the front end surface of the first lens barrel closest to the subject side and the first spacer element on the optical axis, the maximum thickness CP1 of the first spacer element, the outer diameter D1m of the image-side surface of the first spacer element, the inner diameter d1m of the image-side surface of the first spacer element, the center thickness CT1 of the first lens on the optical axis, and the air gap T12 between the first lens and the second lens on the optical axis satisfy: (EP01+CP1) / (D1m-d1m)+CT1 / T12>1.0.

[0019] In one embodiment, the distance EP01 between the front end face of the first lens barrel closest to the subject and the first spacer element on the optical axis, the maximum thickness CP1 of the first spacer element, the outer diameter D1m of the image side of the first spacer element, the inner diameter d1m of the image side of the first spacer element, the center thickness CT1 of the first lens on the optical axis, and the air gap T12 between the first lens and the second lens on the optical axis satisfy: 1.5 < (EP01 + CP1) / (D1m - d1m) + CT1 / T12 < 7.0.

[0020] In one embodiment, the center thickness CT6 of the sixth lens on the optical axis, the center thickness CT7 of the seventh lens on the optical axis, the air gap T67 between the sixth and seventh lenses on the optical axis, the maximum diameter DP6 of the sixth lens, and the maximum diameter DP7 of the seventh lens satisfy: (DP7-DP6)×T67 / (CT6+CT7)>3.0.

[0021] In one embodiment, the optical imaging lens further includes a first lens barrel and a second lens barrel for accommodating at least a portion of the imaging lens group or spacer element, the second lens barrel being connected to the outer side of the first lens barrel via a threaded structure or a snap-fit ​​structure.

[0022] In one embodiment, the optical imaging lens further includes a first lens barrel for accommodating at least a portion of the imaging lens group or spacer elements, the first lens barrel having a front end face facing the subject; a plurality of spacer elements including a third spacer element disposed on the image side of a third lens and in at least partial contact with the third lens; at least two spacer elements are present between the third spacer element and the front end face of the first lens barrel.

[0023] In one embodiment, the multiple spacer elements are formed of an opaque material.

[0024] The optical imaging lens of this application consists of multiple lenses and multiple spacer elements. The combination of multiple lenses can ensure the imaging effect of the optical imaging lens and make its imaging effect meet more requirements. At the same time, the optical imaging lens of this application incorporates multiple spacer elements to improve the strength of the optical imaging lens itself and reduce stray light. The optical imaging lens of this application has at least one beneficial effect, such as assembly stability, high imaging quality, and less stray light.

[0025] The optical imaging lens of this application satisfies D3m / (EP23+CP3)+d3m / (T23+CT3)>10.0, which is beneficial to ensuring the lens forming requirements. The ratio of the center thickness CT3 to EP23 of the third lens on the optical axis determines the ease of forming the third lens. The closer the ratio is to 1, the easier it is to form the lens. By controlling this condition, it is helpful to improve the uniformity of the lens thickness of the third lens, making the lens easier to form. Attached Figure Description

[0026] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0027] Figure 1 A structural layout diagram and schematic diagram of some parameters of an optical imaging lens according to this application are shown;

[0028] Figures 2A to 2C A schematic diagram of the structure of three optical imaging lenses according to Embodiment 1 of this application is shown;

[0029] Figures 3A to 3C The on-axis chromatic aberration curve, astigmatism curve, and distortion curve of the optical imaging lens according to Embodiment 1 of this application are shown respectively.

[0030] Figures 4A to 4C A schematic diagram of the structure of three optical imaging lenses according to Embodiment 2 of this application is shown;

[0031] Figures 5A to 5C The on-axis chromatic aberration curve, astigmatism curve, and distortion curve of the optical imaging lens according to Embodiment 2 of this application are shown respectively.

[0032] Figure 6 A schematic diagram of the structure of an optical imaging lens according to Embodiment 3 of this application is shown;

[0033] Figures 7A to 7C The on-axis chromatic aberration curve, astigmatism curve, and distortion curve of the optical imaging lens according to Embodiment 3 of this application are shown.

[0034] Figure 8 A schematic diagram of the structure of an optical imaging lens according to Embodiment 4 of this application is shown; and

[0035] Figures 9A to 9C The on-axis chromatic aberration curve, astigmatism curve, and distortion curve of the optical imaging lens according to Embodiment 4 of this application are shown. Detailed Implementation

[0036] 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. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0037] 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.

[0038] 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.

[0039] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the location of that convexity is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the location of that concaveness is not defined, it means that the lens surface is concave at least in the paraxial region. The surface shape in the paraxial region can be determined according to the judgment method commonly used by those knowledgeable in the field, using the positive or negative R value (R refers to the radius of curvature of the paraxial region) to determine convexity or concavity. 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. For the object-side surface, when the R value is positive, it is determined to be convex, and when the R value is negative, it is determined to be concave; for the image-side surface, when the R value is positive, it is determined to be concave, and when the R value is negative, it is determined to be convex.

[0040] It should also be understood that the terms "comprising," "including," "having," "containing," and / or "comprising," 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 expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features, not individual elements in the list. Additionally, 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.

[0041] 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.

[0042] 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 the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. 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 the present invention, and these all fall within the protection scope of the present invention. For example, the imaging lens group, lens barrel structure, and spacer element in the various embodiments of this application can be arbitrarily combined, and it is not limited to the imaging lens group in one embodiment being combined only with the lens barrel structure, spacer element, etc. of that embodiment.

[0043] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0044] An optical imaging lens according to an exemplary embodiment of this application may include an imaging lens group and a plurality of spacer elements. The imaging 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. The plurality of spacer elements includes a fourth spacer element positioned on the image side of the fourth lens and at least partially in contact with the fourth lens, and a fifth spacer element positioned on the image side of the fifth lens and at least partially in contact with the fifth lens. The plurality of spacer elements are formed of an opaque material. Using spacer elements between lenses can prevent direct contact between lenses, thereby blocking light transmitted between lenses, filtering non-imaging light, and improving stray light phenomena.

[0045] In an exemplary embodiment, the plurality of spacer elements of the optical imaging lens according to the present application may include a first spacer element disposed on the image-side side of a first lens and in at least partial contact with the first lens, a second spacer element disposed on the image-side side of a second lens and in at least partial contact with the second lens, a third spacer element disposed on the image-side side of a third lens and in at least partial contact with the third lens, a fourth spacer element disposed on the image-side side of a fourth lens and in at least partial contact with the fourth lens, a fifth spacer element disposed on the image-side side of a fifth lens and in at least partial contact with the fifth lens, and a sixth spacer element disposed on the image-side side of a sixth lens and in at least partial contact with the sixth lens.

[0046] In an exemplary embodiment, at least two of the first to fourth lenses of the optical imaging lens according to this application have concave object-side or image-side surfaces; the object-side surface of the first lens and the object-side surface of the fifth lens have opposite concave and convex shapes, which is beneficial to meet the imaging requirements of the lens. Different shapes of lens surfaces have different focal lengths and different light processing effects. The imaging lens group is the superposition of different lens surfaces, and a certain imaging effect is achieved by superimposing the focal lengths of different lens surfaces.

[0047] In an exemplary embodiment, the image-side surface of the first lens of the optical imaging lens according to this application is concave; the image-side surface of the third lens is also concave, which is beneficial for better transmission of light after it enters the lens. The concave image-side surface converges the light to ensure complete transmission of light energy. The larger the focal length of the concave surface, the higher the light energy transmission rate.

[0048] In an exemplary embodiment, the fourth lens of the optical imaging system according to this application has positive optical power, and its object-side surface is convex, as is its image-side surface. The sixth lens also has positive optical power, and its object-side surface is convex. Appropriately setting the optical power and surface shape of the lenses is beneficial for changing the propagation path of light within the lens group. A convex object-side surface allows more light to enter the lens, resulting in more energy transfer and higher image quality. A convex image-side surface has a diverging effect on light; the larger the focal length of the convex surface, the more severe the light divergence, the larger the light propagation diameter, and the more significant the improvement in image height.

[0049] In an exemplary embodiment, the first lens of the optical imaging system according to this application may have positive or negative optical power; the second lens may have positive or negative optical power; the third lens may have positive or negative optical power; the fourth lens may have positive optical power, with its object-side surface and image-side surface being convex; the fifth lens may have positive or negative optical power; the sixth lens may have positive optical power, with its object-side surface being convex; and the seventh lens may have positive or negative optical power. By reasonably controlling the positive and negative distribution of the optical power of each lens in the optical imaging system, the low-order aberrations of the optical imaging lens group can be effectively balanced and controlled, and the sensitivity to tolerances can be reduced, maintaining the miniaturization of the system.

[0050] In an exemplary embodiment, the optical imaging lens according to this application includes a first lens barrel for accommodating at least a portion of an imaging lens group or a spacer element. The first lens barrel has a front end face facing the subject and a rear end face facing the imaging side. The first lens barrel has an inner wall perpendicular to the optical axis. The object-side surface of the first lens is in at least partial contact with the inner wall of the first lens barrel perpendicular to the optical axis, with a contact bandwidth greater than or equal to 0.05 mm. The flatness of the inner wall of the first lens barrel perpendicular to the optical axis is less than 0.001 mm, which is beneficial for meeting the assembly and fixing requirements of the optical imaging lens. The first lens directly contacts and fixes its position with the first lens barrel, laying the foundation for the fixing state of the subsequent lenses. The larger the contact area between the first lens and the first lens barrel, the smaller the flatness of the inner wall surface of the first lens barrel perpendicular to the optical axis, and the better the assembly stability of the optical imaging lens.

[0051] In an exemplary embodiment, the optical imaging lens according to this application may include a first lens barrel and a second lens barrel for accommodating at least a portion of the imaging lens group or spacer element. The second lens barrel is connected to the outer side of the first lens barrel via a threaded structure or a snap-fit ​​structure. The split-type structure of the lens barrel can optimize the problems of uneven lens barrel forming, poor roundness and coaxiality of the internal structure caused by an excessively large lens barrel. The split-type structure also protects the lenses and completes lens assembly. The split lens barrels can be fixed together in different ways, including but not limited to threads and snap-fits. The combination of threads and snap-fit ​​structures can ensure the stability of different lens barrel sections and precisely control the distance between the two sections, thus ensuring the imaging effect of the lens.

[0052] Figure 1 This diagram illustrates the structural layout and schematic diagram of some parameters of an optical imaging lens according to this application. Those skilled in the art will understand that some parameters frequently used in the art, such as the center thickness CT1 of the first lens on the optical axis, are not shown. Figure 1 As shown in the figure, Figure 1 Only a few parameters of an optical imaging lens of this application are shown as an example to facilitate a better understanding of the invention.

[0053] In an exemplary embodiment, the optical imaging lens according to this application satisfies: -10.0 < (D5s - d5s) / (EP45 + CP5) + R8 / R9 < 10.0, where, as Figure 1As shown, d5s is the inner diameter of the object-side surface of the fifth spacer element, D5s is the outer diameter of the object-side surface of the fifth spacer element, EP45 is the spacing between the fourth and fifth spacer elements along the optical axis, CP5 is the maximum thickness of the fifth spacer element, R8 is the radius of curvature of the image-side surface of the fourth lens, and R9 is the radius of curvature of the object-side surface of the fifth lens. Satisfying -10.0 < (D5s - d5s) / (EP45 + CP5) + R8 / R9 < 10.0 is beneficial for ensuring the assembly requirements of the optical imaging lens. The radius of curvature R8 of the image-side surface of the fourth lens and the radius of curvature R9 of the object-side surface of the fifth lens determine the surface shape trend of the fourth and fifth lenses, and also affect the maximum thickness of the fifth spacer element CP5. The maximum thickness CP5 of the fifth spacer element is related to the outer diameter D5s and the inner diameter d5s of the object-side surface of the fifth spacer element. The closer the maximum thickness CP5 of the fifth spacer element is to the bandwidth size of the fifth spacer element, the more significant the improvement in lens assembly stability, and the better the lens assembly stability.

[0054] In an exemplary embodiment, preferably, D5s, d5s, EP45, CP5, R8, and R9 further satisfy: -5.0 < (D5s - d5s) / (EP45 + CP5) + R8 / R9 < 5.0. This helps to improve stray light, reduce the transmission of non-imaging light caused by penetrating light between lenses, and improve the lens image quality. This conditional expression helps to ensure that the inner diameter of the object side of the spacer element is close to the optical outer diameter of the image side of the preceding lens, and that the inner diameter of the image side of the spacer element is close to the optical outer diameter of the object side of the following lens, thus improving the light-blocking effect at that position. At the same time, it helps to reduce the sensitivity of the fifth and sixth lenses.

[0055] In an exemplary embodiment, the optical imaging lens further includes a first lens barrel for accommodating at least a portion of the imaging lens group or spacer element, the first lens barrel having a front end face facing the subject; the optical imaging lens according to this application satisfies: D0s / ds-R1 / R2>0.5, wherein, as Figure 1As shown, ds is the minimum inner diameter of the front end portion of the first lens barrel facing the subject, D0s is the outer diameter of the front end face of the first lens barrel, R1 is the radius of curvature of the object-side surface of the first lens, and R2 is the radius of curvature of the image-side surface of the first lens. More specifically, D0s, ds, R1, and R2 can further satisfy: D0s / ds - R1 / R2 > 1.21. Satisfying D0s / ds - R1 / R2 > 0.5 helps control the appearance of the optical imaging lens and ensures the performance requirements of the optical imaging lens. The minimum inner diameter ds of the front part of the lens barrel near the subject is the light-passing aperture of the lens barrel. Controlling ds controls the amount of light entering the optical imaging lens. The outer diameter D0s of the front face of the lens barrel determines the size of the head of the optical imaging lens. For a mobile phone module with a fixed window size, the overall appearance of the camera module is optimal when the head size of the optical imaging lens is slightly larger than the window size, followed by the second best when the head size of the optical imaging lens is larger than the window size, and the worst when the head size of the optical imaging lens is smaller than the window size. Satisfying D0s / ds-R1 / R2>0.5 also helps to ensure the size of the lens barrel structure at the first lens position and control the wall thickness of the lens barrel. The larger the wall thickness of the lens barrel, the greater the pressure it can withstand during lens assembly, resulting in better assembly stability of the front position of the optical imaging lens and improving the reliability of the optical imaging lens under different conditions.

[0056] In an exemplary embodiment, the plurality of spacer elements further includes a second spacer element disposed on the image-side surface of the second lens and at least partially in contact with the second lens. The optical imaging lens according to this application satisfies: D2m / DP2-(R4-R3) / f2>0.2, where, as... Figure 1 As shown, D2m is the outer diameter of the image-side surface of the second spacer element, DP2 is the maximum diameter of the second lens, R3 is the radius of curvature of the object-side surface of the second lens, R4 is the radius of curvature of the image-side surface of the second lens, and f2 is the effective focal length of the second lens. More specifically, D2m, DP2, R4, R3, and f2 can further satisfy: D2m / DP2-(R4-R3) / f2>0.65. Satisfying D2m / DP2-(R4-R3) / f2>0.2 helps to ensure the imaging and assembly stability of the optical imaging lens. The imaging light rays are refracted by different lenses, cross and converge, and finally converge at the imaging plane to form an image. Therefore, the radius of curvature of each lens contributes to the final imaging effect. The radius of curvature R3 of the object side of the second lens and the radius of curvature R4 of the image side of the second lens together determine whether the second lens is a concave or convex lens, and together affect the construction of the subsequent lenses; the second spacer element is the component that connects the second lens and the third lens assembly. The second spacer element must not block light and must ensure the integrity of light transmission. The more complete the light transmission, the better the image quality. At the same time, the second spacer element must have a sufficiently large contact area with the second and third lenses. The larger the contact area, the better the assembly stability of the lens.

[0057] In an exemplary embodiment, the optical imaging lens according to this application can satisfy: ImgH / TD / [(D0m-d0m) / L]>1.0, where ImgH is half the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens, and TD is the axial distance from the object side of the first lens to the image side of the last lens, such as... Figure 1 As shown, D0m is the outer diameter of the rear end face of the first lens barrel, d0m is the inner diameter of the rear end face of the first lens barrel, and L is the distance from the front end face to the rear end face of the first lens barrel. More specifically, ImgH, TD, D0m, d0m, and L can further satisfy: ImgH / TD / [(D0m-d0m) / L]>2.57. Satisfying ImgH / TD / [(D0m-d0m) / L]>1.0 is beneficial to ensuring the performance and appearance of the optical imaging lens, and ensuring the matching degree between the optical imaging lens and the chip during the design. Under the condition of lens barrel wall thickness, the larger the image height of the optical imaging lens, i.e., the larger ImgH, the larger the outer diameter D0m of the rear end face of the lens barrel, the larger the light transmission space, and the higher the imaging quality of the optical imaging lens. The outer diameter D0m of the rear end face of the lens barrel and the distance L from the front end face to the rear end face of the lens barrel together determine the appearance of the lens. Under the condition of motor adaptation, the larger the adjustment space of the lens appearance, the more aesthetically pleasing it is.

[0058] In an exemplary embodiment, the optical imaging lens according to this application can satisfy: D3m / (EP23+CP3)+d3m / (T23+CT3)>10.0, where, as Figure 1 As shown, d3m is the inner diameter of the image-side surface of the third spacer element, D3m is the outer diameter of the image-side surface of the third spacer element, EP23 is the spacing between the second and third spacer elements along the optical axis, CP3 is the maximum thickness of the third spacer element, T23 is the air gap between the second and third lenses on the optical axis, and CT3 is the center thickness of the third lens on the optical axis. More specifically, D3m, EP23, CP3, d3m, T23, and CT3 can further satisfy: D3m / (EP23+CP3)+d3m / (T23+CT3)>16.01. Satisfying D3m / (EP23+CP3)+d3m / (T23+CT3)>10.0 is beneficial to ensuring the formation requirements of the lens. The ratio of the center thickness CT3 of the third lens on the optical axis to EP23 determines the ease of forming the third lens. The closer the ratio is to 1, the easier it is to form the lens. By controlling this condition, it is helpful to improve the uniformity of the lens thickness of the third lens, making the lens easier to form.

[0059] In an exemplary embodiment, the optical imaging lens according to this application can satisfy: (DP4 / D4m+DP5 / D5m) / (CT4+CT5)>0.5, where, as Figure 1 As shown, DP4 is the maximum diameter of the fourth lens, DP5 is the maximum diameter of the fifth lens, D4m is the outer diameter of the image-side surface of the fourth spacer element, D5m is the outer diameter of the image-side surface of the fifth spacer element, CT4 is the center thickness of the fourth lens on the optical axis, and CT5 is the center thickness of the fifth lens on the optical axis. More specifically, DP4, D4m, DP5, D5m, CT4, and CT5 further satisfy: (DP4 / D4m + DP5 / D5m) / (CT4 + CT5) > 1.42. Satisfying (DP4 / D4m+DP5 / D5m) / (CT4+CT5)>0.5 is beneficial for ensuring lens forming and the stability of the fourth and fifth lens assembly. By controlling this condition, the assembly step difference between the fourth and fifth lenses can be controlled. The smaller the assembly step difference, the better the lens assembly stability. The maximum diameter D4m of the fourth lens and the center thickness CT4 of the fourth lens on the optical axis determine the difficulty of forming the fourth lens, and the maximum diameter D5m of the fifth lens and the center thickness CT5 of the fifth lens on the optical axis determine the difficulty of forming the fifth lens. By controlling this condition, the forming difficulty of the fourth and fifth lenses can be reduced.

[0060] In an exemplary embodiment, the optical imaging lens according to this application can satisfy: (EP01+CP1) / (D1m-d1m)+CT1 / T12>1.0, where, as Figure 1 As shown, EP01 is the optical axis spacing between the front end face of the first lens barrel closest to the subject and the first spacer element; CP1 is the maximum thickness of the first spacer element; D1m is the outer diameter of the image-side surface of the first spacer element; d1m is the inner diameter of the image-side surface of the first spacer element; CT1 is the center thickness of the first lens on the optical axis; and T12 is the air gap between the first and second lenses on the optical axis. More specifically, EP01, CP1, D1m, d1m, CT1, and T12 can further satisfy: (EP01+CP1) / (D1m-d1m)+CT1 / T12>2.63. Satisfying (EP01+CP1) / (D1m-d1m)+CT1 / T12>1.0 is beneficial to ensuring the lens forming requirements. By controlling this condition, the ratio of EP01 to CT1 can be guaranteed. The closer the ratio is to 1, the easier it is to form the first lens. At the same time, by controlling this condition, the mating surfaces of the first lens and the lens barrel and the mating surfaces of the first lens and the first spacer element can be guaranteed to coincide on the same straight line. The larger the overlapping area, the better the assembly stability.

[0061] In an exemplary embodiment, the optical imaging lens according to this application satisfies: 1.5 < (EP01 + CP1) / (D1m - d1m) + CT1 / T12 < 7.0, where, as Figure 1As shown, EP01 is the optical axis spacing between the front end face of the first lens barrel closest to the subject and the first spacer element; CP1 is the maximum thickness of the first spacer element; D1m is the outer diameter of the image-side surface of the first spacer element; d1m is the inner diameter of the image-side surface of the first spacer element; CT1 is the center thickness of the first lens on the optical axis; and T12 is the air gap between the first and second lenses on the optical axis. More specifically, EP01, CP1, D1m, d1m, CT1, and T12 can further satisfy: 2.63 < (EP01 + CP1) / (D1m - d1m) + CT1 / T12 < 4.87. Satisfying 1.5 < (EP01 + CP1) / (D1m - d1m) + CT1 / T12 < 7.0 is beneficial for ensuring the lens forming requirements. By controlling this condition, the ratio of EP01 to CT1 can be guaranteed. The closer the ratio is to 1, the easier it is to form the first lens. At the same time, by controlling this condition, the mating surfaces of the first lens and the lens barrel and the mating surfaces of the first lens and the first spacer element can be ensured to coincide on the same straight line. The larger the overlapping area, the better the assembly stability. In addition, by controlling this condition, the interception of light emitted from the first lens by the first spacer element can be controlled. Under the condition of ensuring lens illumination, the more light is blocked, the better the improvement of stray light, and the higher the image quality of the lens.

[0062] In an exemplary embodiment, the optical imaging lens according to this application satisfies: (DP7-DP6)×T67 / (CT6+CT7)>3.0, where CT6 is the center thickness of the sixth lens on the optical axis, CT7 is the center thickness of the seventh lens on the optical axis, and T67 is the air gap between the sixth and seventh lenses on the optical axis. Figure 1 As shown, DP6 is the maximum diameter of the sixth lens, and DP7 is the maximum diameter of the seventh lens. DP7, DP6, T67, CT6, and CT7 can further satisfy: (DP7-DP6)×T67 / (CT6+CT7)>6.14. Satisfying (DP7-DP6)×T67 / (CT6+CT7)>3.0 is beneficial for meeting the control requirements of the lens appearance. The larger the difference between the maximum diameter of the sixth lens DP6 and the maximum diameter of the seventh lens DP7, the more complex the shape and structure of the lens barrel, and the greater the risk of molding a one-piece lens barrel. Controlling this condition helps to reduce risk and allow for the use of a split structure.

[0063] In an exemplary embodiment, the effective focal length f of the optical imaging lens can be, for example, in the range of 5.91 mm to 6.60 mm; the effective focal length f1 of the first lens can be, for example, in the range of 9.74 mm to 15.72 mm; the effective focal length f2 of the second lens can be, for example, in the range of -57.01 mm to 22.31 mm; the effective focal length f3 of the third lens can be, for example, in the range of -23.15 mm to -17.44 mm; the effective focal length f4 of the fourth lens can be, for example, in the range of 9.83 mm to 24.05 mm; the effective focal length f5 of the fifth lens can be, for example, in the range of -48.05 mm to -10.55 mm; the effective focal length f6 of the sixth lens can be, for example, in the range of 5.56 mm to 9.48 mm; and the effective focal length f7 of the seventh lens can be, for example, in the range of -4.94 mm to -4.40 mm. The optical imaging lens according to this application can have a small total optical length while having a large image plane; for example, the total optical length TTL of the optical imaging lens can meet 7.47mm. <TTL<8.59mm。

[0064] In an exemplary embodiment, half the diagonal length of the effective pixel area on the imaging surface, ImgH, satisfies the condition: 6.12mm < ImgH < 6.34mm.

[0065] In an exemplary embodiment, the maximum field of view (FOV) of the optical imaging lens satisfies: FOV ≥ 86°. For example, the maximum field of view (FOV) of the optical imaging lens can be in the range of 86.0° to 89.0°.

[0066] In an exemplary embodiment, the optical imaging lens according to this application may satisfy: f / EPD < 1.60, where f is the effective focal length of the optical imaging lens and EPD is the entrance pupil diameter of the optical imaging lens. Exemplarily, f / EPD may be in the range of 1.47 to 1.60, for example.

[0067] The optical imaging lens according to the above embodiments of this application can employ multiple lenses, such as the seven lenses mentioned above. By rationally allocating the optical power, surface shape, center thickness of each lens, and on-axis spacing between each lens, the low-order aberrations of the optical imaging lens can be effectively balanced and controlled, while reducing its tolerance sensitivity and maintaining the miniaturization of the optical imaging lens.

[0068] In embodiments of this application, at least one of the mirror surfaces of the first to seventh lenses is an aspherical mirror surface. An aspherical lens is characterized by a continuously changing curvature from the lens center to the lens periphery. Unlike a spherical lens, which has a constant curvature from the lens center to the lens periphery, an aspherical lens has better radius of curvature characteristics, offering advantages in improving distortion aberrations and astigmatism. By using an aspherical lens, aberrations occurring during imaging can be eliminated as much as possible, thereby improving image quality. Optionally, the object-side and image-side surfaces of each of the first to seventh lenses are aspherical mirror surfaces.

[0069] However, those skilled in the art will understand that the number of lenses constituting the optical imaging lens can be varied to obtain the various results and advantages described herein without departing from the technical solutions claimed in this application. For example, although seven lenses are described as an example in the embodiments, the optical imaging lens is not limited to including seven lenses. If desired, the optical imaging lens may also include other numbers of lenses.

[0070] The following describes in further detail, with reference to the accompanying drawings, specific embodiments of the optical imaging lens applicable to the above-described embodiments.

[0071] Example 1

[0072] The following is for reference Figures 2A to 3C The optical imaging lenses 1001, 1002 and 1003 according to Embodiment 1 of this application are described. Figures 2A to 2C Schematic diagrams of the optical imaging lenses 1001, 1002 and 1003 according to Embodiment 1 of this application are shown respectively.

[0073] like Figures 2A to 2C As shown, optical imaging lenses 1001, 1002 and 1003 all include a lens barrel structure, an imaging lens group and multiple spacer elements.

[0074] like Figures 2A to 2CAs shown, optical imaging lenses 1001, 1002, and 1003 employ the same imaging lens group. Each of these groups comprises 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, arranged sequentially along the optical axis from the object side to the image side. Specifically, 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 concave 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 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 convex. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being convex. Light from the object passes sequentially along the first optical axis from the first lens E1 to the seventh lens E7, and is finally imaged on the imaging plane (not shown).

[0075] like Figures 2A to 2B As shown, the optical imaging lenses 1001 and 1002 each include a plurality of spacer elements: a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4, and a fifth spacer element P5. The first spacer element P1 is disposed on the image-side surface of the first lens E1 and at least partially in contact with it; the second spacer element P2 is disposed on the image-side surface of the second lens E2 and at least partially in contact with it; the third spacer element P3 is disposed on the image-side surface of the third lens E3 and at least partially in contact with it; the fourth spacer element P4 is disposed on the image-side surface of the fourth lens E4 and at least partially in contact with it; and the fifth spacer element P5 is disposed on the image-side surface of the fifth lens E5 and at least partially in contact with it. The first spacer element P1, the second spacer element P2, the third spacer element P3, the fourth spacer element P4, and the fifth spacer element P5 are spacers. The aforementioned spacer elements P1 to P5 can block excess external light from entering, allowing the lens to better support the lens barrel and enhancing the structural stability of the optical imaging lens 1001 and the optical imaging lens 1002.

[0076] like Figure 2CAs shown, the optical imaging lens 1003 includes multiple spacer elements: a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4, a fifth spacer element P5, and a sixth spacer element P5b. The first spacer element P1 is disposed on the image-side surface of the first lens E1 and at least partially contacts the first lens E1; the second spacer element P2 is disposed on the image-side surface of the second lens E2 and at least partially contacts the second lens E2; the third spacer element P3 is disposed on the image-side surface of the third lens E3 and at least partially contacts the third lens E3; the fourth spacer element P4 is disposed on the image-side surface of the fourth lens E4 and at least partially contacts the fourth lens E4; the fifth spacer element P5 is disposed on the image-side surface of the fifth lens E5 and at least partially contacts the fifth lens E5; and the sixth spacer element P5b is disposed on the image-side surface of the fifth spacer element P5 and at least partially contacts the fifth spacer element P5. The first spacer element P1, the second spacer element P2, the third spacer element P3, the fourth spacer element P4, and the sixth spacer element P5b are spacers, and the fifth spacer element P5 is a spacer ring. The aforementioned spacer elements P1 to P5b can block excess external light from entering, allowing the lens to better support the lens barrel and enhancing the structural stability of the optical imaging lens 1003.

[0077] like Figures 2A to 2C As shown, the optical imaging lenses 1001, 1002 and 1003 each have a single lens barrel, namely the first lens barrel J1.

[0078] In this example, the effective focal length f of optical imaging lenses 1001, 1002, and 1003 is 5.92 mm, the total optical length TTL (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface of the optical imaging lens) of optical imaging lenses 1001, 1002, and 1003 is 8.58 mm, half the diagonal length ImgH of the effective pixel area on the imaging surface of optical imaging lenses 1001, 1002, and 1003 is 6.13 mm, the maximum field of view FOV of optical imaging lenses 1001, 1002, and 1003 is 88.9°, and the ratio f / EPD of the effective focal length f of optical imaging lenses 1001, 1002, and 1003 to the entrance pupil diameter EPD of optical imaging lenses 1001, 1002, and 1003 is 1.48.

[0079] Table 1 shows the basic parameters of the imaging lens groups of optical imaging lenses 1001, 1002 and 1003 of Embodiment 1, wherein the units of radius of curvature, thickness and effective focal length are millimeters (mm).

[0080]

[0081] Table 1

[0082] In Embodiment 1, 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 x of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0083]

[0084] 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 below gives the higher-order coefficients A4, A6, A8, A14 that can be used for each aspherical mirror S1-S14 in Example 1. 10 A 12 A 14 A 16 A 18 A 20 A 22 A 24 A 26 A 28 and A 30 .

[0085]

[0086]

[0087] Table 2-1

[0088] Face number A18 A20 A22 A24 A26 A28 A30 S1 -2.2785E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 -2.2181E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 8.4523E-03 -2.2195E-03 3.7653E-04 -3.7271E-05 1.6351E-06 0.0000E+00 0.0000E+00 S4 8.2789E-04 -2.9758E-04 6.6865E-05 -8.4588E-06 4.5870E-07 0.0000E+00 0.0000E+00 S5 3.2190E-04 -4.7604E-05 2.8542E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -1.0088E-02 2.8813E-03 -5.7475E-04 7.5414E-05 -5.8274E-06 2.0057E-07 0.0000E+00 S7 -4.0565E-04 4.9975E-05 -3.7572E-06 1.5223E-07 -2.3772E-09 0.0000E+00 0.0000E+00 S8 -4.0946E-04 4.3364E-05 -2.8600E-06 1.2479E-07 -5.7740E-09 2.4573E-10 0.0000E+00 S9 -3.4764E-04 4.0987E-05 -3.0756E-06 1.2595E-07 -1.2685E-09 -6.1511E-11 0.0000E+00 S10 6.6941E-06 -6.4652E-07 5.3313E-08 -2.6858E-09 5.7202E-11 0.0000E+00 0.0000E+00 S11 7.2552E-07 8.1597E-08 -1.4726E-08 8.7200E-10 -1.8284E-11 -4.5617E-14 0.0000E+00 S12 -1.9988E-06 2.8034E-07 -2.2197E-08 9.3556E-10 -1.6362E-11 0.0000E+00 0.0000E+00 S13 -1.0158E-06 5.8497E-08 -2.4281E-09 7.0685E-11 -1.3686E-12 1.5816E-14 -8.2498E-17 S14 -4.7379E-07 2.1585E-08 -7.0149E-10 1.5868E-11 -2.3737E-13 2.1107E-15 -8.4476E-18

[0089] Table 2-2

[0090] The difference between the optical imaging lenses 1001, 1002, and 1003 in Embodiment 1 lies in the different structural dimensions of the lens barrel structure and the spacer element. Tables 3-1, 3-2, and 3-3 respectively show the structural parameters of the lens barrel structure and spacer element of the optical imaging lenses 1001, 1002, and 1003 in Embodiment 1.

[0091] The unit for all parameters in Table 3-3 is millimeters (mm).

[0092] d1m D1m D2m d3m D3m D4m d5s D5s 3.820 6.660 7.200 4.440 7.700 8.600 5.900 9.500 D5m ds d0m D0s D0m EP01 CP1 EP23 9.500 4.020 10.140 10.315 11.340 1.214 0.022 0.492 CP3 EP45 L DP2 DP4 DP5 DP6 DP7 0.022 0.818 5.309 6.66 7.70 8.60 9.50 12.30 CP5 0.022

[0093] Table 3-1

[0094]

[0095]

[0096] Table 3-2

[0097] d1m D1m D2m d3m D3m D4m d5s D5s 3.820 6.660 5.800 4.440 7.700 8.200 6.101 7.008 D5m ds d0m D0s D0m EP01 CP1 EP23 8.440 4.020 10.140 10.315 11.340 1.214 0.022 0.492 CP3 EP45 L DP2 DP4 DP5 DP6 DP7 0.022 0.578 5.309 6.66 7.70 8.20 9.50 12.30 CP5 0.340

[0098] Table 3-3

[0099] Figure 3A The on-axis chromatic aberration curves of the optical imaging lenses 1001, 1002 and 1003 of Embodiment 1 are shown, which represent the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 3B The astigmatism curves of optical imaging lenses 1001, 1002, and 1003 of Embodiment 1 are shown, representing the meridional image plane curvature and the sagittal image plane curvature. Figure 3C The distortion curves of optical imaging lenses 1001, 1002, and 1003 of Embodiment 1 are shown, representing the distortion magnitude values ​​corresponding to different image heights. According to... Figures 3A to 3C It can be seen that the optical imaging lenses 1001, 1002 and 1003 given in Example 1 can achieve good imaging quality.

[0100] Example 2

[0101] The following is for reference Figures 4A to 5C The optical imaging lenses 2001, 2002, and 2003 according to Embodiment 2 of this application are described. In this embodiment and the following embodiments, for the sake of brevity, descriptions similar to those in Embodiment 1 will be omitted. Figures 4A to 4C Schematic diagrams of the optical imaging lenses 2001, 2002 and 2003 according to Embodiment 2 of this application are shown respectively.

[0102] like Figures 4A to 4C As shown, optical imaging lenses 2001, 2002 and 2003 all include a lens barrel structure, an imaging lens group and multiple spacer elements.

[0103] like Figures 4A to 4CAs shown, optical imaging lenses 2001, 2002, and 2003 employ the same imaging lens group. Each of these groups comprises 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, arranged sequentially along the optical axis from the object side to the image side. Specifically, 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 positive 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 concave 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 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 concave and its image-side surface S14 being concave. Light from the object passes sequentially along the first optical axis from the first lens E1 to the seventh lens E7, and is finally imaged on the imaging plane (not shown).

[0104] like Figures 4A to 4B As shown, the optical imaging lenses 2001 and 2002 employ multiple spacer elements, each including: a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4, a fifth spacer element P5, and a sixth spacer element P6. Specifically, the first spacer element P1 is disposed on the image-side surface of the first lens E1 and at least partially contacts the first lens E1; the second spacer element P2 is disposed on the image-side surface of the second lens E2 and at least partially contacts the second lens E2; the third spacer element P3 is disposed on the image-side surface of the third lens E3 and at least partially contacts the third lens E3; the fourth spacer element P4 is disposed on the image-side surface of the fourth lens E4 and at least partially contacts the fourth lens E4; the fifth spacer element P5 is disposed on the image-side surface of the fifth lens E5 and at least partially contacts the fifth lens E5; and the sixth spacer element P6 is disposed on the image-side surface of the sixth lens E6 and at least partially contacts the sixth lens E6. Among them, the first spacer element P1, the second spacer element P2, the third spacer element P3, the fourth spacer element P4, and the fifth spacer element P5 are spacers, and the sixth spacer element P6 is a pressure ring. The aforementioned spacers P1 to P6 can block excess external light from entering, allowing the lens to better support the lens barrel, and enhancing the structural stability of the optical imaging lens 2001 and the optical imaging lens 2002.

[0105] like Figure 4CAs shown, the optical imaging lens 2003 includes multiple spacer elements: a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4, a fifth spacer element P5, a seventh spacer element P5b, and a sixth spacer element P6. Specifically, the first spacer element P1 is disposed on the image-side side of the first lens E1 and at least partially contacts the first lens E1; the second spacer element P2 is disposed on the image-side side of the second lens E2 and at least partially contacts the second lens E2; the third spacer element P3 is disposed on the image-side side of the third lens E3 and at least partially contacts the third lens E3; the fourth spacer element P4 is disposed on the image-side side of the fourth lens E4 and at least partially contacts the fourth lens E4; the fifth spacer element P5 is disposed on the image-side side of the fifth lens E5 and at least partially contacts the fifth lens E5; the seventh spacer element P5b is disposed on the image-side side of the fifth spacer element P5 and at least partially contacts the fifth spacer element P5; and the sixth spacer element P6 is disposed on the image-side side of the sixth lens E6 and at least partially contacts the sixth lens E6. Among them, the first spacer element P1, the second spacer element P2, the third spacer element P3, the fourth spacer element P4, and the seventh spacer element P5b are spacers, the fifth spacer element P5 is a spacer ring, and the sixth spacer element P6 is a pressure ring. The aforementioned spacers P1 to P6 can block excess external light from entering, allowing the lens to better fit against the lens barrel, and enhancing the structural stability of the optical imaging lens 2003.

[0106] like Figures 4A to 4C As shown, the lens barrels of optical imaging lenses 2001, 2002, and 2003 each include a first lens barrel J1 and a second lens barrel J2. The second lens barrel J2 is connected to the outer side of the first lens barrel J1 via a threaded structure.

[0107] In this example, the effective focal length f of optical imaging lenses 2001, 2002, and 2003 is 6.58 mm, the total optical length TTL (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface of the optical imaging lens) of optical imaging lenses 2001, 2002, and 2003 is 8.28 mm, half the diagonal length ImgH of the effective pixel area on the imaging surface of optical imaging lenses 2001, 2002, and 2003 is 6.30 mm, the maximum field of view FOV of optical imaging lenses 2001, 2002, and 2003 is 86.0°, and the ratio f / EPD of the effective focal length f of optical imaging lenses 2001, 2002, and 2003 to the entrance pupil diameter EPD of optical imaging lenses 2001, 2002, and 2003 is 1.59.

[0108] Table 4 shows the basic parameters of the imaging lens groups of optical imaging lenses 2001, 2002 and 2003 of Embodiment 2, wherein the units of radius of curvature, thickness and effective focal length are millimeters (mm). Tables 5-1 and 5-2 show the higher-order coefficients that can be used for each aspherical mirror in Embodiment 2, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0109]

[0110] Table 4

[0111] Face number A4 A6 A8 A10 A12 A14 A16 S1 -1.7640E-04 -1.2360E-03 2.0023E-03 -1.4442E-03 5.4848E-04 -8.3727E-05 -9.0525E-06 S2 -1.2556E-02 1.0082E-02 -1.5603E-02 1.2924E-02 -6.1651E-03 1.6629E-03 -2.2456E-04 S3 -2.1595E-02 3.8757E-02 -8.7007E-02 1.1453E-01 -9.6734E-02 5.3763E-02 -1.9398E-02 S4 2.3624E-02 -1.5777E-01 4.8360E-01 -9.2358E-01 1.1587E+00 -9.8815E-01 5.8250E-01 S5 1.3210E-02 -1.5305E-01 3.5863E-01 -5.8920E-01 7.0288E-01 -6.1223E-01 3.8621E-01 S6 9.7193E-02 -2.8586E-01 3.9926E-01 -3.3901E-01 1.7384E-01 -4.7527E-02 1.1604E-03 S7 1.1673E-01 -2.7004E-01 3.5250E-01 -2.8316E-01 1.4020E-01 -4.0292E-02 5.0227E-03 S8 -9.5936E-04 5.1820E-03 -2.5272E-02 2.8930E-02 -1.4880E-02 1.1084E-03 3.2758E-03 S9 7.7200E-02 -4.4344E-02 -1.0573E-02 4.1885E-02 -3.8913E-02 2.0798E-02 -7.1892E-03 S10 5.9490E-02 -5.6428E-02 7.8514E-03 3.3485E-02 -4.0917E-02 2.6222E-02 -1.1046E-02 S11 -1.0164E-02 -2.2952E-02 1.2814E-02 2.5612E-03 -8.2649E-03 5.8946E-03 -2.4339E-03 S12 -1.1213E-03 3.7901E-03 -8.4905E-03 6.4495E-03 -3.0702E-03 9.9934E-04 -2.2801E-04 S13 -2.6438E-02 1.8472E-02 -9.7612E-03 3.3404E-03 -7.7005E-04 1.2411E-04 -1.4251E-05 S14 -3.5544E-02 1.5924E-02 -5.1142E-03 1.0996E-03 -1.6567E-04 1.8089E-05 -1.4622E-06

[0112] Table 5-1

[0113]

[0114]

[0115] Table 5-2

[0116] The difference between the optical imaging lenses 2001, 2002, and 2003 in Example 2 is that the lens barrel structure and the structural dimensions of the spacer element are different. Tables 6-1, 6-2, and 6-3 show the structural parameters of the lens barrel structure and spacer element of the optical imaging lenses 2001, 2002, and 2003 in Example 2, respectively. The unit of each parameter in Tables 6-1, 6-2, and 6-3 is millimeters (mm).

[0117] d1m D1m D2m d3m D3m D4m d5s D5s 3.920 5.241 5.480 4.040 7.400 8.100 5.600 8.400 D5m ds d0m D0s D0m EP01 CP1 EP23 8.400 4.160 13.720 8.066 14.260 1.114 0.022 0.583 CP3 EP45 L DP2 DP4 DP5 DP6 DP7 0.022 0.633 7.701 6.36 7.40 8.10 8.40 12.40 CP5 0.022

[0118] Table 6-1

[0119] d1m D1m D2m d3m D3m D4m d5s D5s 3.920 6.760 7.300 4.040 7.800 8.100 5.600 8.400 D5m ds d0m D0s D0m EP01 CP1 EP23 8.400 4.160 13.720 8.066 14.300 1.114 0.022 0.583 CP3 EP45 L DP2 DP4 DP5 DP6 DP7 0.022 0.633 7.701 6.76 7.80 8.10 8.40 12.40 CP5 0.022

[0120] Table 6-2

[0121] d1m D1m D2m d3m D3m D4m d5s D5s 3.920 6.760 7.300 4.040 7.400 7.700 6.148 7.615 D5m ds d0m D0s D0m EP01 CP1 EP23 7.700 4.160 13.720 8.066 14.300 1.114 0.022 0.583 CP3 EP45 L DP2 DP4 DP5 DP6 DP7 0.022 0.437 7.701 6.76 7.40 7.70 8.40 12.40 CP5 0.396

[0122] Table 6-3

[0123] Figure 5A The on-axis chromatic aberration curves of the optical imaging lenses 2001, 2002, and 2003 of Embodiment 2 are shown, which indicate the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 5B Astigmatism curves for optical imaging lenses 2001, 2002, and 2003 of Embodiment 2 are shown, representing meridional image plane curvature and sagittal image plane curvature. Figure 5C The distortion curves of optical imaging lenses 2001, 2002, and 2003 of Embodiment 2 are shown, representing the distortion magnitude values ​​corresponding to different image heights. According to... Figures 5A to 5CIt can be seen that the optical imaging lenses 2001, 2002 and 2003 given in Example 2 can achieve good imaging quality.

[0124] Example 3

[0125] The following is for reference Figures 6 to 7C The optical imaging lens 3000 according to Embodiment 3 of this application is described. Figure 6 A schematic diagram of the structure of an optical imaging lens 3000 according to Embodiment 3 of this application is shown.

[0126] like Figure 6 As shown, the optical imaging lens 3000 includes a lens barrel structure, an imaging lens group, and multiple spacer elements.

[0127] like Figure 6 As shown, the imaging lens group of the optical imaging lens 3000 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 arranged sequentially along the optical axis from the object side to the image side. Specifically, 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 positive 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 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 concave and its image-side surface S14 being convex. Light from the object passes sequentially along the first optical axis from the first lens E1 to the seventh lens E7, and is finally imaged on the imaging plane (not shown).

[0128] like Figure 6As shown, the optical imaging lens 3000 includes multiple spacer elements: a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4, a fifth spacer element P5, and a sixth spacer element P6. Specifically, the first spacer element P1 is disposed on the image-side side of the first lens E1 and at least partially contacts the first lens E1; the second spacer element P2 is disposed on the image-side side of the second lens E2 and at least partially contacts the second lens E2; the third spacer element P3 is disposed on the image-side side of the third lens E3 and at least partially contacts the third lens E3; the fourth spacer element P4 is disposed on the image-side side of the fourth lens E4 and at least partially contacts the fourth lens E4; the fifth spacer element P5 is disposed on the image-side side of the fifth lens E5 and at least partially contacts the fifth lens E5; and the sixth spacer element P6 is disposed on the image-side side of the sixth lens E6 and at least partially contacts the sixth lens E6. The first spacer element P1, the second spacer element P2, the third spacer element P3, the fourth spacer element P4, and the fifth spacer element P5 are spacers, and the sixth spacer element P6 is a retaining ring. The aforementioned spacer elements P1 to P6 can block excess external light from entering, allowing the lens to better support the lens barrel and enhancing the structural stability of the optical imaging lens 3000.

[0129] like Figure 6 As shown, the lens barrel of the optical imaging lens 3000 includes a first lens barrel J1 and a second lens barrel J2, wherein the second lens barrel J2 is connected to the outer side of the first lens barrel J1 by a snap-fit ​​structure.

[0130] In this example, the effective focal length f of the optical imaging lens 3000 is 6.59 mm, the total optical length TTL of the optical imaging lens 3000 (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface of the optical imaging lens) is 8.33 mm, half the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens 3000 is 6.33 mm, the maximum field of view FOV of the optical imaging lens 3000 is 86.3°, and the ratio f / EPD of the effective focal length f of the optical imaging lens 3000 to the entrance pupil diameter EPD of the optical imaging lens 3000 is 1.59.

[0131] Table 7 shows the basic parameters of the imaging lens group of the optical imaging lens 3000 of Embodiment 3, wherein the units of radius of curvature, thickness and effective focal length are millimeters (mm). Tables 8-1 and 8-2 show the higher-order coefficients that can be used for each aspherical mirror in Embodiment 3, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0132]

[0133] Table 7

[0134]

[0135]

[0136] Table 8-1

[0137] Face number A18 A20 A22 A24 A26 A28 A30 S1 -1.7218E-04 1.9304E-05 -9.3755E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 -2.3125E-05 1.0973E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 -2.7093E-03 6.7140E-04 -1.0629E-04 9.7197E-06 -3.9200E-07 0.0000E+00 0.0000E+00 S4 -9.1133E-03 2.7636E-03 -5.5216E-04 6.5612E-05 -3.5181E-06 0.0000E+00 0.0000E+00 S5 6.9427E-02 -2.6069E-02 6.7586E-03 -1.1537E-03 1.1687E-04 -5.3306E-06 0.0000E+00 S6 7.3173E-03 -2.1557E-03 3.8285E-04 -3.8314E-05 1.6652E-06 0.0000E+00 0.0000E+00 S7 9.5089E-03 -2.8065E-03 5.4285E-04 -6.7077E-05 4.8216E-06 -1.5385E-07 0.0000E+00 S8 1.9929E-03 -6.3836E-04 1.3318E-04 -1.7580E-05 1.3368E-06 -4.4689E-08 0.0000E+00 S9 3.8331E-04 -4.9418E-05 3.6208E-06 -1.2710E-07 1.8680E-09 -7.0794E-11 0.0000E+00 S10 -6.1696E-04 6.8272E-05 -1.1065E-06 -8.7723E-07 1.3273E-07 -8.5417E-09 2.1661E-10 S11 -3.7571E-04 5.7481E-05 -6.4808E-06 5.2274E-07 -2.8509E-08 9.3983E-10 -1.4104E-11 S12 1.2648E-05 -1.3063E-06 9.1022E-08 -3.9488E-09 8.6388E-11 -1.2221E-13 -2.1717E-14 S13 2.1129E-06 -1.5407E-07 7.9925E-09 -2.8849E-10 6.9014E-12 -9.8618E-14 6.3884E-16 S14 6.0982E-08 -2.8925E-09 9.8760E-11 -2.3710E-12 3.8040E-14 -3.6651E-16 1.6047E-18

[0138] Table 8-2

[0139] Table 9 shows the structural parameters of the lens barrel structure and spacer element of the optical imaging lens 3000 of Embodiment 3. The unit of each parameter in Table 9 is millimeters (mm).

[0140] d1m D1m D2m d3m D3m D4m d5s D5s 3.920 5.240 5.504 4.240 7.400 8.100 5.600 8.400 D5m ds d0m D0s D0m EP01 CP1 EP23 8.400 4.160 13.720 8.066 14.260 1.332 0.022 0.629 CP3 EP45 L DP2 DP4 DP5 DP6 DP7 0.022 0.633 7.917 6.36 7.40 8.10 8.40 12.40 CP5 0.022

[0141] Table 9

[0142] Figure 7A The on-axis chromatic aberration curve of the optical imaging lens 3000 of Embodiment 3 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 7B The astigmatism curve of the optical imaging lens 3000 of Embodiment 3 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 7C The distortion curve of the optical imaging lens 3000 of Embodiment 3 is shown, representing the distortion magnitude values ​​corresponding to different image heights. According to... Figures 7A to 7C It can be seen that the optical imaging lens 3000 given in Example 3 can achieve good imaging quality.

[0143] Example 4

[0144] The following is for reference Figures 8 to 9C The optical imaging lens 4000 according to Embodiment 4 of this application is described. Figure 8 A schematic diagram of the structure of an optical imaging lens 4000 according to Embodiment 4 of this application is shown.

[0145] like Figure 8 As shown, the optical imaging lens 4000 includes a lens barrel structure, an imaging lens group, and multiple spacer elements.

[0146] like Figure 8As shown, the imaging lens group of the optical imaging lens 4000 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 arranged sequentially along the optical axis from the object side to the image side. Specifically, 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 positive 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 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 concave and its image-side surface S14 being convex. Light from the object passes sequentially along the first optical axis from the first lens E1 to the seventh lens E7, and is finally imaged on the imaging plane (not shown).

[0147] like Figure 8 As shown, the optical imaging lens 4000 includes multiple spacer elements: a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4, a fifth spacer element P5, and a sixth spacer element P6. Specifically, the first spacer element P1 is disposed on the image-side side of the first lens E1 and at least partially contacts the first lens E1; the second spacer element P2 is disposed on the image-side side of the second lens E2 and at least partially contacts the second lens E2; the third spacer element P3 is disposed on the image-side side of the third lens E3 and at least partially contacts the third lens E3; the fourth spacer element P4 is disposed on the image-side side of the fourth lens E4 and at least partially contacts the fourth lens E4; the fifth spacer element P5 is disposed on the image-side side of the fifth lens E5 and at least partially contacts the fifth lens E5; and the sixth spacer element P6 is disposed on the image-side side of the sixth lens E6 and at least partially contacts the sixth lens E6. The first spacer element P1, the second spacer element P2, the third spacer element P3, the fourth spacer element P4, and the fifth spacer element P5 are spacers, and the sixth spacer element P6 is a retaining ring. The aforementioned spacer elements P1 to P6 can block excess external light from entering, allowing the lens to better support the lens barrel and enhancing the structural stability of the optical imaging lens 4000.

[0148] like Figure 8 As shown, the lens barrel of the optical imaging lens 4000 includes a first lens barrel J1.

[0149] In this example, the effective focal length f of the optical imaging lens 4000 is 6.53 mm, the total optical length TTL of the optical imaging lens 4000 (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface of the optical imaging lens) is 7.48 mm, half the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens 4000 is 6.33 mm, the maximum field of view FOV of the optical imaging lens 4000 is 86.3°, and the ratio f / EPD of the effective focal length f of the optical imaging lens 4000 to the entrance pupil diameter EPD of the optical imaging lens 4000 is 1.58.

[0150] Table 10 shows the basic parameters of the imaging lens group of the optical imaging lens 4000 of Embodiment 4, wherein the units of radius of curvature, thickness and effective focal length are millimeters (mm). Tables 11-1 and 11-2 show the higher-order coefficients that can be used for each aspherical mirror in Embodiment 4, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0151]

[0152]

[0153] Table 10

[0154] Face number A4 A6 A8 A10 A12 A14 A16 S1 5.0167E-04 -3.0334E-03 6.2006E-03 -7.3572E-03 5.5750E-03 -2.7416E-03 8.7047E-04 S2 -8.3114E-03 -2.3267E-03 3.5308E-03 -3.5259E-03 2.2018E-03 -8.3796E-04 1.9055E-04 S3 -1.1948E-02 -4.3900E-03 8.1461E-03 -1.4213E-02 1.6989E-02 -1.3475E-02 7.3137E-03 S4 -4.7316E-03 -5.6215E-03 1.3351E-02 -2.6900E-02 3.6291E-02 -3.2877E-02 2.0701E-02 S5 -1.6910E-02 -6.3508E-03 -2.3936E-02 8.6687E-02 -1.5288E-01 1.7079E-01 -1.3005E-01 S6 3.6835E-02 -1.0803E-01 1.2979E-01 -9.4300E-02 3.1109E-02 8.1450E-03 -1.4099E-02 S7 5.2035E-02 -1.0772E-01 1.2074E-01 -7.3844E-02 9.7183E-03 2.1915E-02 -2.0321E-02 S8 -2.0103E-04 -1.4136E-02 1.2387E-02 -6.1032E-03 -8.1490E-04 4.4443E-03 -3.9684E-03 S9 5.8776E-02 -4.5911E-02 1.5201E-02 4.8725E-03 -9.1370E-03 5.3809E-03 -1.8221E-03 S10 4.7432E-02 -8.8584E-02 8.3810E-02 -5.7674E-02 2.9849E-02 -1.1538E-02 3.2320E-03 S11 -3.7857E-03 -4.5578E-02 5.0526E-02 -3.6077E-02 1.8208E-02 -6.7063E-03 1.8346E-03 S12 7.4074E-03 -2.0954E-04 -4.9185E-03 3.4820E-03 -1.4452E-03 4.1621E-04 -8.5854E-05 S13 1.0495E-02 2.1193E-03 -4.5700E-03 2.3495E-03 -7.1191E-04 1.4519E-04 -2.0749E-05 S14 5.6546E-03 4.9991E-04 -1.1170E-03 3.9192E-04 -7.7809E-05 1.0186E-05 -9.3072E-07

[0155] Table 11-1

[0156]

[0157]

[0158] Table 11-2

[0159] Table 12 shows the structural parameters of the lens barrel structure and spacer element of the optical imaging lens 4000 of Embodiment 4. The unit of each parameter in Table 12 is millimeters (mm).

[0160] d1m D1m D2m d3m D3m D4m d5s D5s 3.920 5.241 5.504 4.140 7.400 8.100 5.600 8.400 D5m ds d0m D0s D0m EP01 CP1 EP23 8.400 4.160 9.240 8.066 10.740 1.332 0.022 0.629 CP3 EP45 L DP2 DP4 DP5 DP6 DP7 0.022 0.633 4.931 6.36 7.40 8.10 8.40 12.40 CP5 0.022

[0161] Table 12

[0162] Figure 9A The on-axis chromatic aberration curve of the optical imaging lens 4000 of Embodiment 4 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 9B The astigmatism curve of the optical imaging lens 4000 of Embodiment 4 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 9C The distortion curve of the optical imaging lens 4000 of Embodiment 4 is shown, representing the distortion magnitude values ​​corresponding to different image heights. According to... Figures 9A to 9C It can be seen that the optical imaging lens 4000 given in Example 4 can achieve good imaging quality.

[0163] In summary, the optical imaging lenses 1001, 1002 and 1003 of Embodiment 1, the optical imaging lenses 2001, 2002 and 2003 of Embodiment 2, the optical imaging lens 3000 of Embodiment 3 and the optical imaging lens 4000 of Embodiment 4 satisfy the relationships shown in Table 13.

[0164] Conditional / Optical Imaging Lens 1001 1002 1003 2001 2002 2003 3000 4000 (D5s-d5s) / (EP45+CP5)-R8 / R9 3.87 3.87 0.57 0.42 0.42 -2.10 -0.09 -0.09 D0s / ds-R1 / R2 2.27 2.27 2.27 1.22 1.22 1.22 1.30 1.30 D2m / DP2-(R4-R3) / f2 1.07 0.86 0.86 0.66 0.88 0.88 0.77 0.77 ImgH / TD / [(D0m-d0m) / L] 3.23 3.23 3.23 11.39 10.60 10.60 11.50 2.58 D3m / (EP23+CP3)+d3m / (T23+CT3) 19.56 19.56 19.56 16.79 17.45 16.79 16.13 16.02 (DP4 / D4m+DP5 / D5m) / (CT4+CT5) 1.43 1.46 1.52 1.87 1.92 1.95 1.82 1.82 (EP01+CP1) / (D1m-d1m)+CT1 / T12 2.64 2.64 2.64 4.86 4.40 4.40 4.63 4.63 (DP7-DP6)×T67 / (CT6+CT7) 8.27 8.27 8.27 6.15 6.15 6.15 6.54 6.65

[0165] Table 13

[0166] 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, include: The imaging lens group includes 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; as well as A plurality of spacer elements, including a second spacer element disposed on the image-side surface of the second lens and in at least partial contact with the second lens, and a third spacer element disposed on the image-side surface of the third lens and in at least partial contact with the third lens; in, The first lens has positive optical power, and its object side is convex and its image side is concave. The object-side surface of the second lens is convex, and the image-side surface is concave. The third lens has negative optical power and its image-side surface is concave. The fourth lens has positive optical power; The fifth lens has negative optical power; The sixth lens has positive optical power; The seventh lens has negative optical power and its object side is concave. The optical imaging lens has seven lenses with optical power. The inner diameter d3m of the image side of the third spacer element, the outer diameter D3m of the image side of the third spacer element, the spacing EP23 between the second spacer element and the third spacer element along the optical axis, the maximum thickness CP3 of the third spacer element, the air gap T23 between the second lens and the third lens on the optical axis, and the center thickness CT3 of the third lens on the optical axis satisfy: 19.56≥D3m / (EP23+CP3)+d3m / (T23+CT3)>16.

01.

2. The optical imaging lens according to claim 1, characterized in that, The plurality of spacers also includes a fourth spacer element disposed on the image-side surface of the fourth lens and in at least partial contact with the fourth lens, and a fifth spacer element disposed on the image-side surface of the fifth lens and in at least partial contact with the fifth lens; The inner diameter d5s of the object side surface of the fifth spacer element, the outer diameter D5s of the object side surface of the fifth spacer element, the spacing EP45 between the fourth spacer element and the fifth spacer element along the optical axis, the maximum thickness CP5 of the fifth spacer element, the radius of curvature R8 of the image side surface of the fourth lens and the radius of curvature R9 of the object side surface of the fifth lens satisfy: -2.10≤(D5s-d5s) / (EP45+CP5)+R8 / R9≤3.

87.

3. The optical imaging lens according to any one of claims 1 to 2, characterized in that, The optical imaging lens further includes a first lens barrel for accommodating at least a portion of the imaging lens group or the spacer element, the first lens barrel having an inner wall perpendicular to the optical axis, the object side of the first lens being at least partially in contact with the inner wall of the first lens barrel perpendicular to the optical axis, and the bandwidth of the contact being greater than or equal to 0.05 mm, and the flatness of the inner wall of the first lens barrel perpendicular to the optical axis being less than 0.001 mm.

4. The optical imaging lens according to any one of claims 1 to 2, characterized in that, The optical imaging lens further includes a first lens barrel for accommodating at least a portion of the imaging lens group or the spacer element, the first lens barrel having a front end face facing the subject; wherein... The minimum inner diameter ds of the front end portion of the first lens barrel facing the subject, the outer diameter D0s of the front end face of the first lens barrel, the radius of curvature R1 of the object side of the first lens and the radius of curvature R2 of the image side of the first lens satisfy: 2.27≥D0s / ds-R1 / R2>1.

21.

5. The optical imaging lens according to claim 1, characterized in that, The object-side surface of the fourth lens is convex, and the image-side surface is also convex.

6. The optical imaging lens according to claim 1, characterized in that, The object-side surface of the sixth lens is convex.

7. The optical imaging lens according to claim 1, 5, or 6, characterized in that, The outer diameter D2m of the image side of the second spacer element, the maximum diameter DP2 of the second lens, the radius of curvature R3 of the object side of the second lens, the radius of curvature R4 of the image side of the second lens, and the effective focal length f2 of the second lens satisfy: 1.07≥D2m / DP2-(R4-R3) / f2>0.

65.

8. The optical imaging lens according to claim 1, 5, or 6, characterized in that, The optical imaging lens further includes a first lens barrel for accommodating at least a portion of the imaging lens group or the spacer element. The first lens barrel has a front end face facing the subject and a rear end face facing the imaging side. Half the diagonal length of the effective pixel area ImgH on the imaging surface of the optical imaging lens, the axial distance TD from the object side of the first lens to the image side of the last lens, the outer diameter D0m of the rear end face of the first lens barrel, the inner diameter d0m of the rear end face of the first lens barrel, and the distance L from the front end face to the rear end face of the first lens barrel satisfy: 11.50≥ImgH / TD / [(D0m-d0m) / L]>2.

57.

9. The optical imaging lens according to claim 1, 5, or 6, characterized in that, The plurality of spacers also includes a fourth spacer element disposed on the image-side surface of the fourth lens and in at least partial contact with the fourth lens, and a fifth spacer element disposed on the image-side surface of the fifth lens and in at least partial contact with the fifth lens; The maximum diameter DP4 of the fourth lens, the maximum diameter DP5 of the fifth lens, the outer diameter D4m of the image side of the fourth spacer element, the outer diameter D5m of the image side of the fifth spacer element, the center thickness CT4 of the fourth lens on the optical axis, and the center thickness CT5 of the fifth lens on the optical axis satisfy: 1.95≥(DP4 / D4m+DP5 / D5m) / (CT4+CT5)>1.

42.

10. The optical imaging lens according to claim 1, 5, or 6, characterized in that, The optical imaging lens further includes a first lens barrel for accommodating at least a portion of the imaging lens group or the spacer element, and the plurality of spacer elements further includes a first spacer element disposed on the image side of the first lens and in at least partial contact with the first lens; The following conditions are met: the distance EP01 between the front end face of the first lens barrel closest to the subject and the first spacer element on the optical axis; the maximum thickness CP1 of the first spacer element; the outer diameter D1m of the image side surface of the first spacer element; the inner diameter d1m of the image side surface of the first spacer element; the center thickness CT1 of the first lens on the optical axis; and the air gap T12 between the first lens and the second lens on the optical axis: 2.63 < (EP01 + CP1) / (D1m - d1m) + CT1 / T12 < 4.

87.

11. The optical imaging lens according to claim 1, 5, or 6, characterized in that, The center thickness CT6 of the sixth lens on the optical axis, the center thickness CT7 of the seventh lens on the optical axis, the air gap T67 between the sixth and seventh lenses on the optical axis, the maximum diameter DP6 of the sixth lens, and the maximum diameter DP7 of the seventh lens satisfy: 8.27≥(DP7-DP6)×T67 / (CT6+CT7)>6.

14.

12. The optical imaging lens according to claim 1, 5, or 6, characterized in that, The optical imaging lens further includes a first lens barrel and a second lens barrel for accommodating at least a portion of the imaging lens group or the spacer element, the second lens barrel being connected to the outer side of the first lens barrel via a threaded structure or a snap-fit ​​structure.

13. The optical imaging lens according to claim 1, 5, or 6, characterized in that, The optical imaging lens further includes a first lens barrel for accommodating at least a portion of the imaging lens group or the spacer element, the first lens barrel having a front end face facing the subject; There are at least two spacers between the third spacer element and the front end face of the first lens barrel.

14. The optical imaging lens according to claim 1, 5, or 6, characterized in that, The plurality of spacer elements are formed of an opaque material.

15. The optical imaging lens according to any one of claims 1, 2, 5, and 6, characterized in that, At least two of the first to fourth lenses have concave object-side or image-side surfaces.

16. The optical imaging lens according to any one of claims 1, 2, 5, and 6, characterized in that, The object-side surface of the first lens and the object-side surface of the fifth lens have opposite convex and concave surfaces.

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