Optical camera lens

Abstract

The application discloses an optical camera lens, which comprises: an imaging lens group, sequentially comprising a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens from an object side to an image side along an optical axis, wherein at least one lens among the first lens to the fourth lens has a negative focal length; a plurality of spacer elements, comprising a first spacer element arranged on an image side of the first lens and a second spacer element arranged on an image side of the second lens; and a lens barrel for accommodating the imaging lens group and the plurality of spacer elements; wherein a curvature radius R1 of an object side of the first lens, a curvature radius R2 of an image side of the first lens and a curvature radius R3 of an object side of the second lens satisfy R2 / R3>R1 / R2>0; and an inner diameter d1s of an object side of the first spacer element, a central thickness CT1 of the first lens on the optical axis, an outer diameter D2m of an image side of the second spacer element and an air interval T23 of the second lens and the third lens on the optical axis satisfy 9<d1s / CT1+D2m / T23<26.

Description

Technical Field

[0001] This application relates to the field of optical components, and more specifically, to an optical camera lens. Background Technology

[0002] In recent years, with the rapid development of technology, the penetration rate of mobile phones has been increasing, and mobile phones are gradually developing towards higher performance and higher quality. Among these advancements, mobile phone camera technology is a crucial indicator of high performance, and the use of wide-angle lenses with large field of view in mobile phone photography is becoming increasingly prevalent. While wide-angle lenses are characterized by their extremely large field of view, they also attract stray light from more angles, which can severely impact lens quality. This is a key challenge that needs to be overcome in the design of wide-angle lenses and their optical systems. Summary of the Invention

[0003] This application provides an optical camera lens comprising: an imaging lens group, sequentially including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens along the optical axis from the object side to the image side, wherein at least one of the first to fourth lenses has negative optical power; a plurality of spacer elements, including a first spacer element disposed on the image side of the first lens and a second spacer element disposed on the image side of the second lens; and a lens barrel for accommodating the imaging lens group and the plurality of spacer elements; wherein the radius of curvature R1 of the object side of the first lens, the radius of curvature R2 of the image side of the first lens, and the radius of curvature R3 of the object side of the second lens satisfy: R2 / R3>R1 / R2>0; and the inner diameter d1s of the object side of the first spacer element, the center thickness CT1 of the first lens on the optical axis, the outer diameter D2m of the image side of the second spacer element, and the air gap T23 between the second and third lenses on the optical axis satisfy: 9 <d1s / CT1+D2m / T23<26。

[0004] In one embodiment, the outer diameter D0s of the object-side end face of the lens barrel, the center thickness CT1 of the first lens on the optical axis, the air gap T12 between the first and second lenses on the optical axis, the air gap T23 between the second and third lenses on the optical axis, the outer diameter D0m of the image-side end face of the lens barrel, and the air gap T67 between the sixth and seventh lenses on the optical axis satisfy: 13 <D0s / (CT1+T12+T23)+D0m / T67<20。

[0005] In one embodiment, the plurality of spacers further includes a third spacer placed on the image side of the third lens, wherein the spacing distance EP12 between the first and second spacers along the optical axis, the spacing distance EP23 between the second and third spacers along the optical axis, the maximum thickness CP2 of the second spacer along the optical axis, and the air gap T34 between the third and fourth lenses along the optical axis satisfy: 4<(EP12+CP2+EP23) / T34<6.

[0006] In one embodiment, the effective focal length f1 of the first lens, the inner diameter d2s of the object side of the second spacer element, the outer diameter D2m of the image side of the second spacer element, and the air gap T23 between the second and third lenses on the optical axis satisfy: 7 <f1 / d2s+D2m / T23<25。

[0007] In one embodiment, the inner diameter d0s of the object-side end face of the lens barrel, the outer diameter D0s of the object-side end face of the lens barrel, the air gap T12 between the first and second lenses on the optical axis, the center thickness CT2 of the second lens on the optical axis, and the center thickness CT6 of the sixth lens on the optical axis satisfy: 21 <d0s / (T12+CT2)+D0s / CT6<27。

[0008] In one embodiment, the inner diameter d0m of the image end face of the lens barrel facing the image side, the inner diameter d0s of the object end face of the lens barrel facing the object side, the air gap T34 between the third lens and the fourth lens on the optical axis, and the center thickness CT4 of the fourth lens on the optical axis satisfy: 12<(d0m-d0s) / (T34+CT4)<21.

[0009] In one embodiment, the plurality of spacers further includes a fourth spacer element disposed on the image-side surface of the fourth lens, wherein the radius of curvature R6 of the image-side surface of the third lens, the air gap T23 between the second and third lenses on the optical axis, the outer diameter D4s of the object-side surface of the fourth spacer element, and the center thickness CT4 of the fourth lens on the optical axis satisfy: 28 < |R6 / T23| + D4s / CT4 < 62.

[0010] In one embodiment, the plurality of spacers further includes a third spacer element disposed on the image-side surface of the third lens, a fourth spacer element disposed on the image-side surface of the fourth lens, and a fifth spacer element disposed on the image-side surface of the fifth lens, wherein the spacing distance EP34 between the third and fourth spacers along the optical axis, the air gap T34 between the third and fourth lenses along the optical axis, the maximum thickness CP5 of the fifth spacer element along the optical axis, and the air gap T56 between the fifth and sixth lenses along the optical axis satisfy: 7 <EP34 / T34+CP5 / T56<10.5。

[0011] In one embodiment, the plurality of spacers further includes a sixth spacer element disposed on the image-side surface of the sixth lens, wherein the inner diameter d6m of the image-side surface of the sixth spacer element, the outer diameter D6m of the image-side surface of the sixth spacer element, the radius of curvature R11 of the object-side surface of the sixth lens, and the center thickness CT5 of the fifth lens on the optical axis satisfy: 20 <d6m / R11+D6m / CT5<30。

[0012] In one embodiment, the object-side surface of the first lens is convex and the image-side surface is concave; the third lens has positive optical power and its image-side surface is convex.

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

[0014] In one embodiment, the fifth lens has negative optical power, and both its object-side and image-side surfaces are concave.

[0015] This application also provides an optical camera lens comprising: an imaging lens group, sequentially comprising, along the optical axis from the object side to the image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens, wherein the third lens has positive optical power and its image-side surface is convex; and the combined focal length of the first, second, and third lenses is positive optical power; a plurality of spacer elements, including a second spacer element disposed on the image-side surface of the second lens; and a lens barrel for accommodating the imaging lens group and the plurality of spacer elements; wherein the effective focal length f1 of the first lens, the inner diameter d2s of the object-side surface of the second spacer element, the outer diameter D2m of the image-side surface of the second spacer element, and the air gap T23 between the second and third lenses on the optical axis satisfy: 7 <f1 / d2s+D2m / T23<25。

[0016] In one embodiment, the plurality of spacers further includes a first spacer element disposed on the image-side surface of the first lens; wherein the inner diameter d1s of the object-side surface of the first spacer element, the center thickness CT1 of the first lens on the optical axis, the outer diameter D2m of the image-side surface of the second spacer element, and the air gap T23 between the second and third lenses on the optical axis satisfy: 9 <d1s / CT1+D2m / T23<26。

[0017] In one embodiment, the outer diameter D0s of the object-side end face of the lens barrel, the center thickness CT1 of the first lens on the optical axis, the air gap T12 between the first and second lenses on the optical axis, the air gap T23 between the second and third lenses on the optical axis, the outer diameter D0m of the image-side end face of the lens barrel, and the air gap T67 between the sixth and seventh lenses on the optical axis satisfy: 13 <D0s / (CT1+T12+T23)+D0m / T67<20。

[0018] In one embodiment, the plurality of spacers further includes a third spacer placed on the image side of the third lens, wherein the spacing distance EP12 between the first and second spacers along the optical axis, the spacing distance EP23 between the second and third spacers along the optical axis, the maximum thickness CP2 of the second spacer along the optical axis, and the air gap T34 between the third and fourth lenses along the optical axis satisfy: 4<(EP12+CP2+EP23) / T34<6.

[0019] In one embodiment, the inner diameter d0s of the object-side end face of the lens barrel, the outer diameter D0s of the object-side end face of the lens barrel, the air gap T12 between the first and second lenses on the optical axis, the center thickness CT2 of the second lens on the optical axis, and the center thickness CT6 of the sixth lens on the optical axis satisfy: 21 <d0s / (T12+CT2)+D0s / CT6<27。

[0020] In one embodiment, the inner diameter d0m of the image end face of the lens barrel facing the image side, the inner diameter d0s of the object end face of the lens barrel facing the object side, the air gap T34 between the third lens and the fourth lens on the optical axis, and the center thickness CT4 of the fourth lens on the optical axis satisfy: 12<(d0m-d0s) / (T34+CT4)<21.

[0021] In one embodiment, the plurality of spacers further includes a fourth spacer element disposed on the image-side surface of the fourth lens, wherein the radius of curvature R6 of the image-side surface of the third lens, the air gap T23 between the second and third lenses on the optical axis, the outer diameter D4s of the object-side surface of the fourth spacer element, and the center thickness CT4 of the fourth lens on the optical axis satisfy: 28 < |R6 / T23| + D4s / CT4 < 62.

[0022] In one embodiment, the plurality of spacers further includes a third spacer element disposed on the image-side surface of the third lens, a fourth spacer element disposed on the image-side surface of the fourth lens, and a fifth spacer element disposed on the image-side surface of the fifth lens, wherein the spacing distance EP34 between the third and fourth spacers along the optical axis, the air gap T34 between the third and fourth lenses along the optical axis, the maximum thickness CP5 of the fifth spacer element along the optical axis, and the air gap T56 between the fifth and sixth lenses along the optical axis satisfy: 7 <EP34 / T34+CP5 / T56<10.5。

[0023] In one embodiment, the plurality of spacers further includes a sixth spacer element disposed on the image-side surface of the sixth lens, wherein the inner diameter d6m of the image-side surface of the sixth spacer element, the outer diameter D6m of the image-side surface of the sixth spacer element, the radius of curvature R11 of the object-side surface of the sixth lens, and the center thickness CT5 of the fifth lens on the optical axis satisfy: 20 <d6m / R11+D6m / CT5<30。

[0024] In one embodiment, the sixth lens has positive optical power, with its object-side surface being convex and its image-side surface being concave.

[0025] In one embodiment, the fifth lens has negative optical power, and both its object-side and image-side surfaces are concave.

[0026] The optical camera lens provided in this application consists of an imaging lens group, multiple spacers, and a lens barrel. By constraining the curvature of the first and second lenses, the eccentricity sensitivity of the second lens is reduced. The reasonable addition of spacers between adjacent lenses, along with the optimized design of the spacers' inner and outer diameters and the lens spacing, effectively blocks excess light, reduces stray light, and guides the main ray, thereby improving the lens's image quality. Furthermore, the proper arrangement of spacers enhances the lens's molding feasibility and assembly stability. Attached Figure Description

[0027] 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:

[0028] Figure 1 A structural layout diagram and schematic diagram of some parameters of an optical camera lens according to this application are shown;

[0029] Figures 2A to 2C A schematic diagram of the structure of an optical camera lens according to Embodiment 1 of this application is shown;

[0030] Figures 3A to 3C The on-axis chromatic aberration curve, astigmatism curve, and magnification chromatic aberration curve of the optical camera lens according to Embodiment 1 of this application are shown respectively.

[0031] Figures 4A to 4C A schematic diagram of the structure of an optical camera lens according to Embodiment 2 of this application is shown;

[0032] Figures 5A to 5C The on-axis chromatic aberration curve, astigmatism curve, and magnification chromatic aberration curve of the optical camera lens according to Embodiment 2 of this application are shown respectively.

[0033] Figures 6A to 6C A schematic diagram of the structure of an optical camera lens according to Embodiment 3 of this application is shown; and

[0034] Figures 7A to 7C The on-axis chromatic aberration curve, astigmatism curve, and magnification chromatic aberration curve of the optical camera lens according to Embodiment 3 of this application are shown. Detailed Implementation

[0035] 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.

[0036] 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.

[0037] 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 strictly to scale.

[0038] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the location of the 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 the concaveness is not defined, it means that the lens surface is concave at least in the paraxial region. 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 imaging plane is called the image-side surface of the lens.

[0039] 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.

[0040] 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.

[0041] 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 imaging lens group (i.e., the first lens to the seventh lens), lens barrel, and spacer element 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, spacer element, etc. of that embodiment.

[0042] The present application will now be described in detail with reference to the accompanying drawings and embodiments. Figure 1 This diagram illustrates the structural layout and some parameters of an optical camera 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 The present application only exemplarily illustrates some parameters of the lens barrel and spacer element of an optical camera lens to facilitate a better understanding of the invention. Figure 1 As shown, EP12 represents the distance between the first and second spacers along the optical axis; EP23 represents the distance between the second and third spacers along the optical axis; CP2 represents the maximum thickness of the second spacer along the optical axis; CP5 represents the maximum thickness of the fifth spacer along the optical axis; D0s represents the outer diameter of the object-side end face of the lens barrel; d0s represents the inner diameter of the object-side end face of the lens barrel; D0m represents the outer diameter of the image-side end face of the lens barrel; d0m represents the inner diameter of the image-side end face of the lens barrel; d1s represents the inner diameter of the object-side side of the first spacer; d2s represents the inner diameter of the object-side side of the second spacer; D2m represents the outer diameter of the image-side side of the second spacer; d6m represents the inner diameter of the image-side side of the sixth spacer; D6m represents the outer diameter of the image-side side of the sixth spacer.

[0043] The features, principles and other aspects of this application are described in detail below.

[0044] An optical camera lens according to an exemplary embodiment of this application includes an imaging lens group and a plurality of spacers. The imaging lens group, along the optical axis from the object side to the image side, sequentially includes: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. Any two adjacent lenses among the first to seventh lenses may have a spacer distance. By rationally allocating the positive and negative optical powers and surface shapes of each lens in the optical camera lens, the low-order aberrations of the optical camera lens can be effectively balanced and controlled, and the sensitivity to tolerances can be reduced, maintaining the miniaturization of the optical camera lens.

[0045] In an exemplary embodiment, at least one of the first to fourth lenses has negative optical power. Exemplarily, the first lens may have positive optical power; the second lens may have positive or negative optical power; the third lens may have positive optical power; and the fourth lens may have negative optical power. The combined focal length of the first, second, and third lenses is positive optical power.

[0046] In an exemplary embodiment, the object-side surface of the first lens is convex and the image-side surface is concave; and the image-side surface of the third lens is convex. This surface configuration effectively reduces the eccentricity sensitivity of the second lens.

[0047] In an exemplary embodiment, the third lens has positive optical power and its image-side surface is convex. Light rays converge between the second and third lenses and then gradually diverge. Therefore, the image-side surface of the third lens is convex, which allows the converged light rays to gradually diverge.

[0048] In an exemplary embodiment, the sixth lens has positive optical power, with a convex object-side surface and a concave image-side surface. The main function of the sixth lens is to adjust the light rays on the outer edges. The seventh lens typically only smooths out the light rays. Therefore, the sixth lens can be adjusted so that the light rays converge slightly and then diverge, improving the divergence angle. The light rays then pass through the seventh lens smoothly to form an image. This is one of the characteristics of wide-angle lenses, which require a reasonable arrangement of internal lenses to adjust the light rays multiple times.

[0049] In an exemplary embodiment, the fifth lens has negative optical power, and both its object-side and image-side surfaces are concave. The main function of the fifth lens is to facilitate the divergence of converging light rays and increase the divergence angle. Therefore, it typically has negative optical power, and both its object-side and image-side surfaces are highly concave. After passing through the fourth and fifth lenses, the light rays near the center diverge gradually at a small angle, while the light rays near the outer edges diffuse gradually at a large angle.

[0050] In an exemplary embodiment, the optical camera lens according to this application includes at least seven spacer elements, which help the optical camera lens intercept excess reflective light paths and reduce stray light and ghosting.

[0051] In an exemplary implementation, such as Figures 2A to 2C , Figures 4A to 4C as well as Figures 6A to 6C As shown, the plurality of spacers include a first spacer P1 placed on the image side of the first lens E1, a second spacer P2 placed on the image side of the second lens E2, a third spacer P3 placed on the image side of the third lens E3, a fourth spacer P4 placed on the image side of the fourth lens E4, a fifth spacer P5 placed on the image side of the fifth lens E5, a sixth spacer P6 placed on the image side of the sixth lens E6, and a seventh spacer P7 placed on the image side of the seventh lens E7.

[0052] In an exemplary embodiment, the plurality of spacer elements further include auxiliary spacer elements disposed between the spacer elements and the lens, such as... Figures 2A to 2C , Figures 4A to 4C as well as Figures 6A to 6C As shown, the plurality of spacers also includes an auxiliary spacer P6b which is placed on the image side of the sixth spacer P6 and in contact with the object side of the seventh lens.

[0053] In an exemplary embodiment, the optical camera lens according to an exemplary embodiment of this application further includes a lens barrel for accommodating an imaging lens group and a plurality of spacer elements.

[0054] In an exemplary embodiment, the optical camera lens according to this application satisfies: R2 / R3>R1 / R2>0, where 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, and R3 is the radius of curvature of the object-side surface of the second lens. Satisfying R2 / R3>R1 / R2>0 constrains the curvature shapes of the first and second lenses, which is beneficial for reducing the eccentricity sensitivity of the second lens. Exemplarily, R2 / R3 may be in the range of 0.9 to 1.2, and R1 / R2 may be in the range of 0.3 to 0.5.

[0055] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 9 < d1s / CT1 + D2m / T23 < 26, where d1s is the inner diameter of the object side surface of the first spacer element, CT1 is the central thickness of the first lens on the optical axis, D2m is the outer diameter of the image side surface of the second spacer element, and T23 is the air gap between the second lens and the third lens on the optical axis. More specifically, d1s, CT1, D2m, and T23 may further satisfy: 18.0 < d1s / CT1 + D2m / T23 < 25.0. Satisfying 9 < d1s / CT1 + D2m / T23 < 26 is beneficial for guiding the chief ray and improving the imaging quality of the lens. Specifically, the inner diameter of the first spacer element is relatively large, allowing a larger amount of light to pass through. At the same time, it receives the incident light and converges it at the back. The second lens and the third lens are where the light converges. It is required that the light transition is smooth. Therefore, the air gap between the second lens and the third lens can be set relatively larger than the air gap between the first lens and the second lens. In addition, the spacer element should adhere to the edge of the chief ray to block stray light. The second spacer element has a relatively large outer diameter, which can prevent the light at the edge of the front lens from being reflected multiple times between the second spacer element and the non-effective mirror part of the second lens, generating ghost images or strip-shaped stray light.

[0056] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 13 < D0s / (CT1 + T12 + T23) + D0m / T67 < 20, where D0s is the outer diameter of the object end surface of the lens barrel facing the object side, CT1 is the central thickness of the first lens on the optical axis, T12 is the air gap between the first lens and the second lens on the optical axis, T23 is the air gap between the second lens and the third lens on the optical axis, D0m is the outer diameter of the image end surface of the lens barrel facing the image side, and T67 is the air gap between the sixth lens and the seventh lens on the optical axis. More specifically, D0s, CT1, T12, T23, D0m, and T67 may further satisfy: 15 < D0s / (CT1 + T12 + T23) + D0m / T67 < 19. Satisfying 13 < D0s / (CT1 + T12 + T23) + D0m / T67 < 20 is beneficial for the lens barrel to meet the rationality and processability of the overall structure while cooperating with the optical system design. The outer diameters of the object end surface and the image end surface of the lens barrel are considered for structural rationality and assembly stability on the basis of meeting the optical system (without interfering with the incident and outgoing light). The sixth lens and the seventh lens are the positions where the light diverges and exits, which is the key point for imaging. It is required that the central light can pass through smoothly. Therefore, the air gap between the sixth lens and the seventh lens is usually larger than that in the front.

[0057] In an exemplary embodiment, the optical imaging lens according to the present application satisfies: 4 < (EP12 + CP2 + EP23) / T34 < 6, where EP12 is the distance between the first spacer element and the second spacer element along the optical axis direction, EP23 is the distance between the second spacer element and the third spacer element along the optical axis direction, CP2 is the maximum thickness of the second spacer element along the optical axis direction, and T34 is the air gap between the third lens and the fourth lens on the optical axis. More specifically, EP12, CP2, EP23, and T34 further satisfy: 4.2 < (EP12 + CP2 + EP23) / T34 < 5.5. The light rays converge at the second spacer element, and the thickness of the spacer element has an important impact on the light ray convergence effect. Satisfying 4 < (EP12 + CP2 + EP23) / T34 < 6, reasonable control of the distance between the first spacer element and the second spacer element and the distance between the third spacer element and the second spacer element will affect the overall light ray convergence and divergence process. After the third lens, the light rays show a gradually diverging process. Therefore, both the third lens and the fourth lens are convex toward the image side, and the air gap will be small.

[0058] In an exemplary embodiment, the optical imaging lens according to the present application satisfies: 7 < f1 / d2s + D2m / T23 < 25, where f1 is the effective focal length of the first lens, d2s is the inner diameter of the object side surface of the second spacer element, D2m is the outer diameter of the image side surface of the second spacer element, and T23 is the air gap between the second lens and the third lens on the optical axis. More specifically, f1, d2s, D2m, and T23 further satisfy: 17.5 < f1 / d2s + D2m / T23 < 24.0. Satisfying 7 < f1 / d2s + D2m / T23 < 25 can ensure that the incident light rays converge smoothly and effectively between the second lens and the third lens. The spacer element is close to the light ray edge and close to the effective diameter of the lens, which can effectively block stray light and improve the imaging quality.

[0059] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 21 < d0s / (T12 + CT2) + D0s / CT6 < 27, where d0s is the inner diameter of the object end face of the lens barrel facing the object side, D0s is the outer diameter of the object end face of the lens barrel facing the object side, T12 is the air gap between the first lens and the second lens on the optical axis, CT2 is the central thickness of the second lens on the optical axis, and CT6 is the central thickness of the sixth lens on the optical axis. More specifically, d0s, T12, CT2, D0s, and CT6 can further satisfy: 21.4 < d0s / (T12 + CT2) + D0s / CT6 < 26.1. The inner diameter of the object end face of the lens barrel facing the object side needs to have a certain distance from the outermost incident light. Satisfying 21 < d0s / (T12 + CT2) + D0s / CT6 < 27 can ensure that, under the condition of satisfying the incident and outgoing light conditions of the optical imaging lens, the size of the object end face is controlled to the greatest extent, so that the optical imaging lens can be assembled stably and keep a small shape, meeting the equipment size requirements of major manufacturers.

[0060] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 12 < (d0m - d0s) / (T34 + CT4) < 21, where d0m is the inner diameter of the image end face of the lens barrel facing the image side, d0s is the inner diameter of the object end face of the lens barrel facing the object side, T34 is the air gap between the third lens and the fourth lens on the optical axis, and CT4 is the central thickness of the fourth lens on the optical axis. More specifically, d0m, d0s, T34, and CT4 can further satisfy: 13.0 < (d0m - d0s) / (T34 + CT4) < 20.0. The inner diameter of the object end face of the lens barrel facing the object side and the inner diameter of the image end face of the lens barrel facing the image side need to consider the outermost dimensions of the incident and outgoing light of the optical imaging lens. The third lens and the fourth lens are where the light begins to diverge gradually after the light is converged. Satisfying 12 < (d0m - d0s) / (T34 + CT4) < 21 can reasonably control the inner diameters of the front and rear of the lens barrel and the rationality of the light guiding of the overall lens, improving the molding and assembly stability of the lens.

[0061] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 28 < |R6 / T23| + D4s / CT4 < 62, where R6 is the radius of curvature of the image side of the third lens, T23 is the air gap between the second lens and the third lens on the optical axis, D4s is the outer diameter of the object side of the fourth spacer element, and CT4 is the central thickness of the fourth lens on the optical axis. More specifically, R6, T23, D4s, and CT4 can further satisfy: 41.0 < |R6 / T23| + D4s / CT4 < 60.5. Satisfying 28 < |R6 / T23| + D4s / CT4 < 62 is beneficial to effectively control the sizes of the effective diameters of the third lens and the fourth lens, thereby affecting the divergence angle after light convergence. The radius of curvature of the image side of the third lens is relatively large, the air gap between the second and third lenses is relatively large, and by reasonably setting the outer diameter on which the fourth spacer element abuts, the light can be effectively diverged after stable convergence, improving the imaging quality while ensuring the reasonable stability of adjacent structures.

[0062] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 7 < EP34 / T34 + CP5 / T56 < 10.5, where EP34 is the spacing distance between the third spacer element and the fourth spacer element along the optical axis, T34 is the air gap between the third lens and the fourth lens on the optical axis, CP5 is the maximum thickness of the fifth spacer element along the optical axis, and T56 is the air gap between the fifth lens and the sixth lens on the optical axis. More specifically, EP34, T34, CP5, and T56 can further satisfy: 7.2 < EP34 / T34 + CP5 / T56 < 10.0. The distance between the third spacer element and the fourth spacer element can affect the edge thickness of the fourth lens, and the fourth lens is the key point where the light diverges excessively. The fifth spacer element will affect the air gap at the edge of the effective diameters of the fifth lens and the sixth lens. Satisfying 7 < EP34 / T34 + CP5 / T56 < 10.5 can enable the light near the optical axis to pass through stably, and the edge light gradually diverges to increase the angle, improving the imaging quality.

[0063] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 20 < d6m / R11 + D6m / CT5 < 30, where d6m is the inner diameter of the image side of the sixth spacer element, D6m is the outer diameter of the image side of the sixth spacer element, R11 is the radius of curvature of the object side of the sixth lens, and CT5 is the central thickness of the fifth lens on the optical axis. More specifically, d6m, R11, D6m, and CT5 may further satisfy: 22.4 < d6m / R11 + D6m / CT5 < 29.0. The fifth lens and the sixth lens are a transition section for increasing the light divergence angle. The inner and outer diameters of the image side of the sixth spacer element bear against the seventh lens, which will affect the length of the non-mechanical part of the seventh lens. The seventh lens is the lens with the largest outer diameter. A reasonable setting can ensure the barrel thickness and make the assembly more stable. Therefore, satisfying 20 < d6m / R11 + D6m / CT5 < 30 can ensure the effective diffusion of light, guarantee the imaging quality, and at the same time ensure a reasonable lens structure, reduce the overall size, and meet the requirement of the equipment manufacturer for a compact lens.

[0064] In an exemplary embodiment, the effective focal length f of the optical imaging lens may be, for example, in the range of 4.8 mm to 5.3 mm, the effective focal length f1 of the first lens may be, for example, in the range of 6.1 mm to 6.5 mm, the effective focal length f2 of the second lens may be, for example, in the range of -37.5 mm to 500 mm, the effective focal length f3 of the third lens may be, for example, in the range of 16.5 mm to 30.5 mm, the effective focal length f4 of the fourth lens may be, for example, in the range of -35.0 mm to -19.0 mm, the effective focal length f5 of the fifth lens may be, for example, in the range of -7.8 mm to -7.0 mm, the effective focal length f6 of the sixth lens may be, for example, in the range of 3.5 mm to 3.7 mm, the effective focal length f7 of the seventh lens may be, for example, in the range of -4.4 mm to -4.2 mm, the maximum semi-field angle Semi-FOV of the optical imaging lens may be, for example, in the range of 44.2° to 44.3°, the aperture value Fno of the optical imaging lens may be, for example, in the range of 1.65 to 1.67. Exemplarily, the aperture value Fno of the optical imaging lens is 1.66.

[0065] In the embodiments of this application, at least one of the mirror surfaces of each lens is an aspherical mirror surface; that is, at least one mirror surface from the object-side surface of the first lens to the image-side surface of the seventh lens is an aspherical mirror surface. The characteristic of an aspherical lens is that its curvature changes continuously from the center to the periphery of the lens. Unlike a spherical lens, which has a constant curvature from the center to the 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, both the object-side surface and the image-side surface of any one of the first to seventh lenses are aspherical mirror surfaces.

[0066] In an exemplary embodiment, the optical camera lens may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0067] The optical camera 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, and arrangement of the spacers of each lens, excess light from the external field of view can be effectively blocked, improving image quality, reducing the overall optical length of the optical camera lens, achieving module miniaturization, and making the optical camera lens more conducive to manufacturing.

[0068] However, those skilled in the art will understand that the number of lenses constituting the optical camera 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 camera lens is not limited to including seven lenses. If desired, the optical camera lens may also include other numbers of lenses.

[0069] The following describes in further detail, with reference to the accompanying drawings, specific embodiments of the optical camera lens applicable to the above-described embodiments.

[0070] Example 1

[0071] The following is for reference Figures 2A to 3C The optical camera lens 1001, optical camera lens 1002 and optical camera lens 1003 according to Embodiment 1 of this application are described. Figures 2A to 2C Schematic diagrams of the optical camera lens 1001, optical camera lens 1002 and optical camera lens 1003 according to Embodiment 1 of this application are shown respectively.

[0072] like Figures 2A to 2C As shown, optical camera lens 1001, optical camera lens 1002 and optical camera lens 1003 each include a lens barrel P0, an imaging lens group E1 to E7 and multiple spacer elements P1 to P7.

[0073] like Figures 2A to 2C As shown, optical camera lenses 1001, 1002, and 1003 employ the same imaging lens group, which, from the object side to the image side, sequentially 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. 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 positive optical power, with its object-side surface S5 being concave and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. Light from the object passes sequentially through each surface S1 to S14 and is finally imaged onto the imaging plane (not shown).

[0074] Table 1 shows the basic parameters of the imaging lens group of optical camera lens 1001, optical camera lens 1002 and optical camera lens 1003 in Embodiment 1, wherein the units of radius of curvature, thickness and effective focal length are all millimeters (mm).

[0075]

[0076] Table 1

[0077] In this example, the effective focal length f of optical camera lenses 1001, 1002, and 1003 is 4.9mm, the maximum semi-FOV of optical camera lenses 1001, 1002, and 1003 is 44.3°, and the aperture value Fno of optical camera lenses 1001, 1002, and 1003 is 1.66.

[0078] In Embodiment 1, the object-side surface and image-side surface of the first lens E1 to the seventh lens E7 are both aspherical. The surface shape x of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0079]

[0080] Where x is the distance vector from the vertex of the aspherical surface at a height 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. Tables 2-1 and 2-2 give 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 .

[0081] Face number A4 A6 A8 A10 A12 A14 A16 S1 -5.3930E-03 4.4167E-02 -2.1708E-01 6.7749E-01 -1.4210E+00 2.0788E+00 -2.1725E+00 S2 -1.1051E-02 -7.4462E-02 4.7618E-01 -1.9349E+00 5.2248E+00 -9.7771E+00 1.3020E+01 S3 -4.0259E-02 6.2282E-02 -4.9461E-01 2.1560E+00 -6.0843E+00 1.1896E+01 -1.6571E+01 S4 -7.2174E-03 -2.0079E-01 1.7590E+00 -9.6417E+00 3.4753E+01 -8.5989E+01 1.5039E+02 S5 -6.1587E-04 4.7140E-02 -5.2817E-01 2.5637E+00 -8.0134E+00 1.7143E+01 -2.5942E+01 S6 3.8812E-02 -3.8147E-01 1.9559E+00 -7.0434E+00 1.7779E+01 -3.2036E+01 4.1756E+01 S7 -3.5888E-02 -2.3225E-01 1.0763E+00 -4.0570E+00 1.1566E+01 -2.3923E+01 3.5703E+01 S8 -4.2252E-02 -4.3090E-02 1.4177E-02 1.4315E-01 -3.6517E-01 4.8227E-01 -4.1016E-01 S9 5.6645E-02 -5.8714E-02 -2.9364E-02 2.0104E-01 -3.6229E-01 3.8388E-01 -2.6854E-01 S10 -2.2978E-01 7.1742E-02 2.3135E-01 -5.0202E-01 5.6822E-01 -4.3289E-01 2.3564E-01 S11 -1.4051E-01 4.6567E-02 -3.4060E-02 3.0779E-02 -2.0212E-02 8.5712E-03 -2.4158E-03 S12 2.9025E-01 -3.8895E-01 3.0329E-01 -1.6134E-01 6.0732E-02 -1.6558E-02 3.3130E-03 S13 -1.3129E-01 2.1576E-02 2.0121E-02 -1.2441E-02 3.4396E-03 -5.7220E-04 6.1214E-05 S14 -1.4937E-01 5.5117E-02 -1.4426E-02 3.5339E-03 -9.7391E-04 2.4088E-04 -4.3913E-05

[0082] Table 2-1

[0083] Face number A18 A20 A22 A24 A26 A28 A30 S1 1.6435E+00 -9.0308E-01 3.5756E-01 -9.9620E-02 1.8576E-02 -2.0856E-03 1.0677E-04 S2 -1.2504E+01 8.6786E+00 -4.3086E+00 1.4905E+00 -3.4091E-01 4.6283E-02 -2.8208E-03 S3 1.6673E+01 -1.2142E+01 6.3339E+00 -2.3049E+00 5.5508E-01 -7.9426E-02 5.1070E-03 S4 -1.8878E+02 1.7067E+02 -1.1013E+02 4.9458E+01 -1.4682E+01 2.5893E+00 -2.0536E-01 S5 2.8188E+01 -2.2033E+01 1.2251E+01 -4.7141E+00 1.1892E+00 -1.7623E-01 1.1581E-02 S6 -3.9660E+01 2.7424E+01 -1.3645E+01 4.7554E+00 -1.1009E+00 1.5197E-01 -9.4576E-03 S7 -3.8541E+01 3.0049E+01 -1.6735E+01 6.4867E+00 -1.6616E+00 2.5278E-01 -1.7291E-02 S8 2.3800E-01 -9.5404E-02 2.6063E-02 -4.6440E-03 4.8752E-04 -2.2897E-05 0.0000E+00 S9 1.2711E-01 -3.9917E-02 7.6386E-03 -6.2527E-04 -5.7164E-05 1.7249E-05 -1.1263E-06 S10 -9.3277E-02 2.6844E-02 -5.5413E-03 7.9712E-04 -7.5706E-05 4.2599E-06 -1.0744E-07 S11 4.6938E-04 -6.4135E-05 6.1717E-06 -4.1043E-07 1.7982E-08 -4.6746E-10 5.4653E-12 S12 -4.8863E-04 5.2906E-05 -4.1472E-06 2.2877E-07 -8.4178E-09 1.8542E-10 -1.8495E-12 S13 -4.1436E-06 1.5138E-07 7.3178E-11 -3.0136E-10 1.4849E-11 -3.3046E-13 2.9729E-15 S14 5.6205E-06 -5.0323E-07 3.1386E-08 -1.3373E-09 3.7138E-11 -6.0613E-13 4.4122E-15

[0084] Table 2-2

[0085] like Figures 2A to 2C As shown, optical camera lenses 1001, 1002, and 1003 each include eight spacer elements. These eight spacer elements are 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 sixth spacer element P6, an auxiliary spacer element P6b, and a seventh spacer element P7. Specifically, the first spacer element P1 is disposed on the image-side surface of the first lens E1; the second spacer element P2 is disposed on the image-side surface of the second lens E2; the third spacer element P3 is disposed on the image-side surface of the third lens E3; the fourth spacer element P4 is disposed on the image-side surface of the fourth lens E4; the fifth spacer element P5 is disposed on the image-side surface of the fifth lens E5; the sixth spacer element P6 is disposed on the image-side surface of the sixth lens E6; the auxiliary spacer element P6b is disposed on the image-side surface of the sixth lens E6 and contacts the object-side surface of the seventh lens E7; and the seventh spacer element P7 is disposed on the image-side surface of the seventh lens E7.

[0086] In this embodiment, the first spacer element P1, the second spacer element P2, the third spacer element P3, the fourth spacer element P4, and the auxiliary spacer element P6b of optical lenses 1001, 1002, and 1003 are spacers; the fifth spacer element P5 and the sixth spacer element P6 are spacers; and the seventh spacer element P7 is a pressure ring. These spacers can block excess external light from entering, allowing the lens to better contact the lens barrel and enhancing the structural stability of optical lenses 1001, 1002, and 1003.

[0087] Table 3 shows the spacer elements and basic parameters of the lens barrels of optical cameras 1001, 1002, and 1003 in Embodiment 1. The difference between optical cameras 1001, 1002, and 1003 lies in the structural dimensions of their spacer elements.

[0088] Example parameters Optical camera lens 1001 Optical camera lens 1002 Optical camera lens 1003 d1s 2.900 2.800 2.778 d2s 2.418 2.444 2.409 D2m 5.442 5.430 5.464 d6m 8.534 8.558 8.558 D6m 8.937 8.872 8.872 d0s 5.003 5.103 5.085 d0m 10.430 10.470 10.443 D0s 5.654 5.654 5.694 D0m 10.804 10.804 10.845 EP12 0.344 0.344 0.346 CP2 0.018 0.018 0.016 EP23 0.287 0.285 0.287 CP5 0.365 0.365 0.370 D4s 4.874 4.874 5.95 EP34 0.298 0.298 0.298

[0089] Table 3

[0090] Figure 3A The on-axis chromatic aberration curves of optical camera lenses 1001, 1002, and 1003 of Embodiment 1 are shown, which indicate the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 3B The astigmatism curves of optical camera 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 magnification chromatic aberration curves of optical camera lenses 1001, 1002, and 1003 of Embodiment 1 are shown, representing the deviations in image height at different points on the imaging plane after light passes through the lenses. According to... Figures 3A to 3C It can be seen that the optical camera lens 1001, optical camera lens 1002 and optical camera lens 1003 given in Example 1 can achieve good imaging quality.

[0091] Example 2

[0092] The following is for reference Figures 4A to 5C The optical camera lens 2001, optical camera lens 2002, and optical camera lens 2003 according to Embodiment 2 of this application are described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to those in Embodiment 1 will be omitted. Figures 4A to 4C Schematic diagrams of the optical camera lens 2001, optical camera lens 2002, and optical camera lens 2003 according to Embodiment 2 of this application are shown respectively.

[0093] like Figures 4A to 4C As shown, optical camera lens 2001, optical camera lens 2002 and optical camera lens 2003 each include a lens barrel P0, an imaging lens group E1 to E7 and multiple spacer elements P1 to P7.

[0094] like Figures 4A to 4C As shown, optical camera lenses 2001, 2002, and 2003 employ the same imaging lens group, which, from the object side to the image side, sequentially 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. 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 positive optical power, with its object-side surface S5 being concave and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. Light from the object passes sequentially through each surface S1 to S14 and is finally imaged onto the imaging plane (not shown).

[0095] In this example, the effective focal length f of optical camera lenses 2001, 2002, and 2003 is 5.22mm; the maximum semi-field-of-view (Semi-FOV) of optical camera lenses 2001, 2002, and 2003 is 44.29°; and the aperture value Fno of optical camera lenses 2001, 2002, and 2003 is 1.66.

[0096] Table 4 shows the basic parameters of the imaging lens groups of optical camera lenses 2001, 2002, and 2003 in Embodiment 2, wherein the units of radius of curvature, thickness / distance, 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.

[0097]

[0098]

[0099] Table 4

[0100] Face number A4 A6 A8 A10 A12 A14 A16 S1 -5.6016E-03 2.5386E-02 -7.9933E-02 1.5298E-01 -1.5513E-01 6.5265E-03 2.1173E-01 S2 -1.4029E-02 -1.5839E-03 -1.5370E-02 1.0622E-01 -3.6780E-01 7.9016E-01 -1.1301E+00 S3 -3.6970E-02 2.5724E-03 -5.6727E-02 3.6048E-01 -1.2299E+00 2.7431E+00 -4.1678E+00 S4 -1.6750E-02 -6.9557E-02 5.4483E-01 -2.7554E+00 9.3175E+00 -2.1572E+01 3.5059E+01 S5 1.6798E-02 -6.8887E-02 1.9986E-01 -7.1024E-01 2.1377E+00 -4.9255E+00 8.2136E+00 S6 4.0769E-02 -3.1882E-01 1.5343E+00 -5.4887E+00 1.4034E+01 -2.5809E+01 3.4414E+01 S7 -3.5693E-02 -2.3036E-01 1.0647E+00 -4.0021E+00 1.1379E+01 -2.3472E+01 3.4933E+01 S8 -4.4543E-02 -4.6643E-02 1.5756E-02 1.6335E-01 -4.2786E-01 5.8019E-01 -5.0664E-01 S9 6.7786E-02 -1.5029E-01 2.3455E-01 -2.7701E-01 2.2301E-01 -1.1257E-01 2.6400E-02 S10 -2.1757E-01 4.9500E-02 2.1152E-01 -3.7635E-01 3.3949E-01 -1.8929E-01 6.5154E-02 S11 -1.4533E-01 4.8984E-02 -3.6437E-02 3.3487E-02 -2.2365E-02 9.6455E-03 -2.7648E-03 S12 3.0001E-01 -4.1925E-01 3.4515E-01 -1.9380E-01 7.6708E-02 -2.1892E-02 4.5660E-03 S13 -1.6450E-01 3.9923E-02 2.2919E-02 -1.8705E-02 6.3040E-03 -1.2999E-03 1.8111E-04 S14 -1.8953E-01 9.0694E-02 -3.4765E-02 1.2162E-02 -3.7762E-03 9.2149E-04 -1.6484E-04

[0101] Table 5-1

[0102]

[0103]

[0104] Table 5-2

[0105] like Figures 4A to 4C As shown, optical camera lenses 2001, 2002, and 2003 each include eight spacer elements. These eight spacer elements are 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 sixth spacer element P6, an auxiliary spacer element P6b, and a seventh spacer element P7. Specifically, the first spacer element P1 is located on the image-side surface of the first lens E1; the second spacer element P2 is located on the image-side surface of the second lens E2; the third spacer element P3 is located on the image-side surface of the third lens E3; the fourth spacer element P4 is located on the image-side surface of the fourth lens E4; the fifth spacer element P5 is located on the image-side surface of the fifth lens E5; the sixth spacer element P6 is located on the image-side surface of the sixth lens E6; the auxiliary spacer element P6b is located on the image-side surface of the sixth lens E6 and contacts the object-side surface of the seventh lens E7; and the seventh spacer element P7 is located on the image-side surface of the seventh lens E7.

[0106] In this embodiment, the first spacer element P1, the second spacer element P2, the third spacer element P3, the fourth spacer element P4, and the auxiliary spacer element P6b of optical lenses 2001, 2002, and 2003 are spacers; the fifth spacer element P5 and the sixth spacer element P6 are spacers; and the seventh spacer element P7 is a pressure ring. These spacers can block excess external light from entering, allowing the lens to better contact the lens barrel and enhancing the structural stability of optical lenses 2001, 2002, and 2003.

[0107] Table 6 shows the spacer elements and basic parameters of the lens barrels of optical cameras 2001, 2002, and 2003 in Embodiment 2. The difference between optical cameras 2001, 2002, and 2003 lies in the structural dimensions of the spacer elements.

[0108] Example parameters Optical camera lens 2001 Optical camera lens 2002 Optical camera lens 2003 d1s 2.933 3.113 3.167 d2s 2.719 2.653 2.605 D2m 5.241 5.418 5.410 d6m 8.102 8.298 8.282 D6m 8.777 8.777 8.789 d0s 3.249 3.249 3.271 d0m 10.470 10.470 10.492 D0s 5.653 5.653 5.631 D0m 10.804 10.804 10.831 EP12 0.417 0.493 0.493 CP2 0.018 0.018 0.016 EP23 0.264 0.264 0.266 CP5 0.347 0.365 0.397 D4s 5.951 5.903 4.791 EP34 0.402 0.409 0.32

[0109] Table 6

[0110] Figure 5AThe on-axis chromatic aberration curves of optical camera 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 The astigmatism curves of optical camera lenses 2001, 2002, and 2003 of Embodiment 2 are shown, representing the meridional image plane curvature and the sagittal image plane curvature. Figure 5C The magnification chromatic aberration curves of optical camera lenses 2001, 2002, and 2003 of Embodiment 2 are shown, representing the deviations in image height at different points on the imaging plane after light passes through the lenses. According to... Figures 5A to 5C It can be seen that the optical camera lens 2001, optical camera lens 2002 and optical camera lens 2003 given in Example 2 can achieve good imaging quality.

[0111] Example 3

[0112] The following is for reference Figures 6A to 7C The optical camera lens 3001, optical camera lens 3002 and optical camera lens 3003 according to Embodiment 3 of this application are described. Figures 6A to 6C Schematic diagrams of the optical camera lens 3001, optical camera lens 3002 and optical camera lens 3003 according to Embodiment 3 of this application are shown respectively.

[0113] like Figures 6A to 6C As shown, optical camera lenses 3001, 3002, and 3003 each include a lens barrel P0, imaging lens groups E1 to E7, and multiple spacer elements P1 to P7.

[0114] like Figures 6A to 6CAs shown, optical camera lenses 3001, 3002, and 3003 employ the same imaging lens group, which, from the object side to the image side, sequentially 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. 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 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 negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being concave. Light from the object passes sequentially through each surface S1 to S14 and is finally imaged onto the imaging plane (not shown).

[0115] In this example, the effective focal length f of optical camera lenses 3001, 3002, and 3003 is 4.89 mm; the maximum semi-field-of-view (Semi-FOV) of optical camera lenses 3001, 3002, and 3003 is 44.3°; and the aperture value Fno of optical camera lenses 3001, 3002, and 3003 is 1.66.

[0116] Table 7 shows the basic parameters of the imaging lens groups of optical camera lenses 3001, 3002, and 3003 in Embodiment 3, wherein the units of radius of curvature, thickness / distance, 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.

[0117]

[0118]

[0119] Table 7

[0120] Face number A4 A6 A8 A10 A12 A14 A16 S1 -4.0336E-03 3.7352E-02 -2.0137E-01 6.7647E-01 -1.4992E+00 2.2770E+00 -2.4261E+00 S2 -1.3089E-02 -3.7106E-02 2.4404E-01 -9.7902E-01 2.5773E+00 -4.6541E+00 5.9325E+00 S3 -4.4854E-02 3.7536E-02 -2.9341E-01 1.4960E+00 -4.8550E+00 1.0784E+01 -1.6859E+01 S4 -1.8007E-02 -1.2054E-01 1.1579E+00 -6.6774E+00 2.5253E+01 -6.5255E+01 1.1863E+02 S5 2.0556E-03 -1.0904E-02 -5.5680E-02 2.3120E-01 -4.4765E-01 7.5897E-02 1.6426E+00 S6 2.3778E-02 -2.7331E-01 1.4418E+00 -5.2947E+00 1.3503E+01 -2.4568E+01 3.2383E+01 S7 -4.7544E-02 -6.6518E-02 7.4301E-02 2.0797E-01 -9.9669E-01 1.9079E+00 -2.0559E+00 S8 -3.8597E-02 -5.9819E-02 1.3013E-01 -2.0169E-01 2.3443E-01 -2.0501E-01 1.3326E-01 S9 4.9116E-02 -7.2803E-02 3.5351E-02 1.2307E-01 -3.9054E-01 5.8990E-01 -5.7085E-01 S10 -2.3279E-01 1.1038E-01 1.4509E-01 -3.8666E-01 4.5610E-01 -3.4992E-01 1.8905E-01 S11 -1.4970E-01 9.1208E-02 -7.9189E-02 5.3940E-02 -2.6329E-02 8.8937E-03 -2.0817E-03 S12 2.5133E-01 -3.0601E-01 2.2186E-01 -1.1240E-01 4.0850E-02 -1.0833E-02 2.1171E-03 S13 -1.2807E-01 3.0841E-02 7.2687E-03 -5.2344E-03 1.0993E-03 -7.7169E-05 -1.0879E-05 S14 -1.4011E-01 5.4521E-02 -1.7550E-02 5.4142E-03 -1.5103E-03 3.2938E-04 -5.2303E-05

[0121] Table 8-1

[0122]

[0123]

[0124] Table 8-2

[0125] like Figures 6A to 6C As shown, optical camera lens 3001, optical camera lens 3002 and optical camera lens 3003 each include 9 spacer elements. These 9 spacer elements are the first spacer element P1, the second spacer element P2, the third spacer element P3, the fourth spacer element P4, the fifth spacer element P5, the auxiliary spacer element P5b, the sixth spacer element P6, the auxiliary spacer element P6b and the seventh spacer element P7. The first spacer element P1 is disposed on the image-side surface of the first lens E1; the second spacer element P2 is disposed on the image-side surface of the second lens E2; the third spacer element P3 is disposed on the image-side surface of the third lens E3; the fourth spacer element P4 is disposed on the image-side surface of the fourth lens E4; the fifth spacer element P5 is disposed on the image-side surface of the fifth lens E5; the auxiliary spacer element P5b is disposed on the image-side surface of the fifth lens E5 and contacts the object-side surface of the sixth lens E6; the sixth spacer element P6 is disposed on the image-side surface of the sixth lens E6; the auxiliary spacer element P6b is disposed on the image-side surface of the sixth lens E6 and contacts the object-side surface of the seventh lens E7; and the seventh spacer element P7 is disposed on the image-side surface of the seventh lens E7.

[0126] In this embodiment, the first spacer element P1, the second spacer element P2, the third spacer element P3, the fourth spacer element P4, the auxiliary spacer element P5b, and the auxiliary spacer element P6b of optical lenses 3001, 3002, and 3003 are spacers; the fifth spacer element P5 and the sixth spacer element P6 are spacers; and the seventh spacer element P7 is a pressure ring. These spacers can block excess external light from entering, allowing the lens to better contact the lens barrel and enhancing the structural stability of optical lenses 3001, 3002, and 3003.

[0127] Table 9 shows the spacer elements and basic parameters of the lens barrels of optical cameras 3001, 3002, and 3003 in Embodiment 3. The difference between optical cameras 3001, 3002, and 3003 lies in the structural dimensions of the spacer elements.

[0128] Example parameters Optical camera lens 3001 Optical camera lens 3002 Optical camera lens 3003 d1s 2.854 2.807 2.884 d2s 2.552 2.574 2.610 D2m 4.706 4.624 5.607 d6m 8.467 8.575 8.531 D6m 9.255 9.214 9.244 d0s 3.387 3.343 3.403 d0m 12.121 12.151 12.067 D0s 7.449 7.353 7.353 D0m 12.731 12.691 12.711 EP12 0.468 0.464 0.464 CP2 0.012 0.016 0.016 EP23 0.411 0.407 0.407 CP5 0.363 0.365 0.380 D4s 6.467 6.391 6.291 EP34 0.305 0.309 0.309

[0129] Table 9

[0130] Figure 7A The on-axis chromatic aberration curves of optical camera lenses 3001, 3002, and 3003 of Embodiment 3 are shown, which indicate the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 7BThe astigmatism curves of optical camera lenses 3001, 3002, and 3003 of Embodiment 3 are shown, representing the meridional image plane curvature and the sagittal image plane curvature. Figure 7C The magnification chromatic aberration curves of optical cameras 3001, 3002, and 3003 in Embodiment 3 are shown, representing the deviations in image height at different points on the imaging plane after light passes through the lenses. According to... Figures 7A to 7C It can be seen that the optical camera lens 3001, optical camera lens 3002 and optical camera lens 3003 given in Example 3 can achieve good imaging quality.

[0131] In summary, the optical camera lenses 1001, 1002, 1003, 2001, 2002, 2003, 3001, 3002, and 3003 of Examples 1 to 3 satisfy the relationships shown in Table 10.

[0132] Conditional / Optical Camera Lens 1001 1002 1003 2001 2002 2003 3001 3002 3003 d1s / CT1+D2m / T23 19.22 19.07 19.15 18.80 19.53 19.56 21.10 20.73 24.56 D0s / (CT1+T12+T23)+D0m / T67 15.56 15.56 15.64 16.92 16.92 16.94 18.86 18.75 18.77 (EP12+CP2+EP23) / T34 4.31 4.30 4.31 4.85 5.37 5.37 4.70 4.68 4.68 f1 / d2s+D2m / T23 18.72 18.66 18.80 17.86 18.45 18.46 20.20 19.86 23.57 d0s / (T12+CT2)+D0s / CT6 25.77 26.01 26.06 21.44 21.44 21.43 25.87 25.54 25.67 (d0m-d0s) / (T34+CT4) 13.38 13.23 13.21 17.94 17.94 17.94 19.70 19.87 19.54 |R6 / T23|+D4s / CT4 41.65 41.65 45.87 50.45 50.27 45.96 60.40 60.11 59.71 EP34 / T34+CP5 / T56 9.32 9.32 9.42 7.25 7.53 7.32 9.59 9.65 9.98 d6m / R11+D6m / CT5 22.72 22.62 22.62 28.38 28.52 28.54 22.47 22.47 22.49

[0133] Table 10

[0134] This application also provides an imaging device, whose electronic photosensitive element can be a photocoupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The imaging device can be a stand-alone imaging device such as a digital camera, or an imaging module integrated into a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical camera lens described above.

[0135] 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 camera lens characterized in that, include: An imaging lens group, arranged sequentially along the optical axis from the object side to the image side, includes: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens, wherein the first lens has positive optical power; the third lens has positive optical power; the fourth lens has negative optical power; the fifth lens has negative optical power; the sixth lens has positive optical power; and the seventh lens has negative optical power. A plurality of spacer elements, including a first spacer element disposed on the image-side surface of the first lens and a second spacer element disposed on the image-side surface of the second lens; and A lens barrel for housing the imaging lens group and the plurality of spacer elements; The optical camera lens has seven lenses with optical power. 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 image-side surface of the seventh lens is concave; Wherein, the radius of curvature R1 of the object-side surface of the first lens, the radius of curvature R2 of the image-side surface of the first lens, and the radius of curvature R3 of the object-side surface of the second lens satisfy: R2 / R3>R1 / R2>0; and The inner diameter d1s of the object side of the first spacer element, the center thickness CT1 of the first lens on the optical axis, the outer diameter D2m of the image side of the second spacer element, and the air gap T23 between the second lens and the third lens on the optical axis satisfy: 18.80≤d1s / CT1+D2m / T23≤24.

56.

2. The optical camera lens according to claim 1, characterized in that, The outer diameter D0s of the object end face of the lens barrel facing the object side, the center thickness CT1 of the first lens on the optical axis, the air gap T12 between the first and second lenses on the optical axis, the air gap T23 between the second and third lenses on the optical axis, the outer diameter D0m of the image end face of the lens barrel facing the image side, and the air gap T67 between the sixth and seventh lenses on the optical axis satisfy: 15.56≤D0s / (CT1+T12+T23)+D0m / T67≤18.

86.

3. The optical camera lens according to claim 1, characterized in that, The plurality of spacers further includes a third spacer placed on the image side of the third lens, wherein the spacing distance EP12 between the first spacer and the second spacer along the optical axis, the spacing distance EP23 between the second spacer and the third spacer along the optical axis, the maximum thickness CP2 of the second spacer along the optical axis, and the air gap T34 between the third lens and the fourth lens on the optical axis satisfy: 4.30≤(EP12+CP2+EP23) / T34≤5.

37.

4. The optical camera lens according to claim 1, characterized in that, The effective focal length f1 of the first lens, the inner diameter d2s of the object side of the second spacer element, the outer diameter D2m of the image side of the second spacer element, and the air gap T23 between the second lens and the third lens on the optical axis satisfy: 17.86≤f1 / d2s+D2m / T23≤23.

57.

5. The optical camera lens according to claim 1, characterized in that, The inner diameter d0s of the object-side end face of the lens barrel facing the object, the outer diameter D0s of the object-side end face of the lens barrel facing the object, the air gap T12 between the first lens and the second lens on the optical axis, the center thickness CT2 of the second lens on the optical axis, and the center thickness CT6 of the sixth lens on the optical axis satisfy: 21.4 <d0s / (T12+CT2)+D0s / CT6<26.1。 6. The optical camera lens according to any one of claims 1 to 5, characterized in that, The inner diameter d0m of the image end face of the lens barrel facing the image side, the inner diameter d0s of the object end face of the lens barrel facing the object side, the air gap T34 between the third lens and the fourth lens on the optical axis, and the center thickness CT4 of the fourth lens on the optical axis satisfy: 13.21≤(d0m-d0s) / (T34+CT4)≤19.

87.

7. The optical camera lens according to any one of claims 1 to 5, characterized in that, The plurality of spacer elements further includes a fourth spacer element disposed on the image-side surface of the fourth lens, wherein, The radius of curvature R6 of the image side of the third lens, the air gap T23 between the second and third lenses on the optical axis, the outer diameter D4s of the object side of the fourth spacer element, and the center thickness CT4 of the fourth lens on the optical axis satisfy: 41.65≤|R6 / T23|+D4s / CT4≤60.

40.

8. The optical camera lens according to any one of claims 1, 2, 4-5, wherein, The plurality of spacers further includes a third spacer element disposed on the image-side surface of the third lens, a fourth spacer element disposed on the image-side surface of the fourth lens, and a fifth spacer element disposed on the image-side surface of the fifth lens, wherein, The spacing EP34 between the third and fourth spacers along the optical axis, the air gap T34 between the third and fourth lenses on the optical axis, the maximum thickness CP5 of the fifth spacer along the optical axis, and the air gap T56 between the fifth and sixth lenses on the optical axis satisfy: 7.25≤EP34 / T34+CP5 / T56<10.

0.

9. The optical camera lens according to claim 8, characterized in that, The plurality of spacers further includes a sixth spacer element disposed on the image-side surface of the sixth lens, wherein, The inner diameter d6m of the image side of the sixth spacer element, the outer diameter D6m of the image side of the sixth spacer element, the radius of curvature R11 of the object side of the sixth lens, and the center thickness CT5 of the fifth lens on the optical axis satisfy: 22.47≤d6m / R11+D6m / CT5≤28.

54.

10. An optical camera lens characterized in that, include: An imaging lens group, arranged sequentially along the optical axis from the object side to the image side, includes: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens, wherein the first lens has positive optical power; the third lens has positive optical power and its image-side surface is convex; the fourth lens has negative optical power, the fifth lens has negative optical power, the sixth lens has positive optical power, and the seventh lens has negative optical power; and the combined focal length of the first lens, the second lens, and the third lens is positive optical power. Multiple spacer elements, including a second spacer element positioned on the image-side surface of the second lens; and A lens barrel for housing the imaging lens group and the plurality of spacer elements; The optical camera lens has seven lenses with optical power. The object-side surface of the first lens is convex. The image-side surface of the second lens is concave; The image-side surface of the seventh lens is concave; Wherein, the effective focal length f1 of the first lens, the inner diameter d2s of the object side of the second spacer element, the outer diameter D2m of the image side of the second spacer element, and the air gap T23 between the second lens and the third lens on the optical axis satisfy: 17.86≤f1 / d2s+D2m / T23≤23.

57.

11. The optical camera lens according to claim 10, characterized in that, The plurality of spacer elements further includes a first spacer element disposed on the image-side surface of the first lens; wherein, The inner diameter d1s of the object side of the first spacer element, the center thickness CT1 of the first lens on the optical axis, the outer diameter D2m of the image side of the second spacer element, and the air gap T23 between the second lens and the third lens on the optical axis satisfy: 18.80≤d1s / CT1+D2m / T23≤24.

56.

12. The optical camera lens according to claim 10, characterized in that, The outer diameter D0s of the object end face of the lens barrel facing the object side, the center thickness CT1 of the first lens on the optical axis, the air gap T12 between the first and second lenses on the optical axis, the air gap T23 between the second and third lenses on the optical axis, the outer diameter D0m of the image end face of the lens barrel facing the image side, and the air gap T67 between the sixth and seventh lenses on the optical axis satisfy: 15.56≤D0s / (CT1+T12+T23)+D0m / T67≤18.

86.

13. The optical camera lens according to claim 10, characterized in that, The plurality of spacers further includes a first spacer element disposed on the image-side surface of the first lens and a third spacer element disposed on the image-side surface of the third lens, wherein, The spacing EP12 between the first and second spacers along the optical axis, the spacing EP23 between the second and third spacers along the optical axis, the maximum thickness CP2 of the second spacer along the optical axis, and the air gap T34 between the third and fourth lenses on the optical axis satisfy: 4.30≤(EP12+CP2+EP23) / T34≤5.

37.

14. The optical camera lens according to claim 13, characterized in that, The inner diameter d0s of the object-side end face of the lens barrel facing the object, the outer diameter D0s of the object-side end face of the lens barrel facing the object, the air gap T12 between the first lens and the second lens on the optical axis, the center thickness CT2 of the second lens on the optical axis, and the center thickness CT6 of the sixth lens on the optical axis satisfy: 21.4 <d0s / (T12+CT2)+D0s / CT6<26.1。 15. The photographic camera lens according to any one of claims 10-14, characterized in that, The inner diameter d0m of the image end face of the lens barrel facing the image side, the inner diameter d0s of the object end face of the lens barrel facing the object side, the air gap T34 between the third lens and the fourth lens on the optical axis, and the center thickness CT4 of the fourth lens on the optical axis satisfy: 13.21≤(d0m-d0s) / (T34+CT4)≤19.

87.

16. The optical camera lens according to any one of claims 10-14, wherein, The plurality of spacers also includes a fourth spacer element disposed on the image-side surface of the fourth lens, wherein the radius of curvature R6 of the image-side surface of the third lens, the air gap T23 between the second lens and the third lens on the optical axis, the outer diameter D4s of the object-side surface of the fourth spacer element, and the center thickness CT4 of the fourth lens on the optical axis satisfy: 41.65≤|R6 / T23|+D4s / CT4≤60.

40.

17. The optical camera lens according to any one of claims 10, 11, 12 and 14, characterized in that, The plurality of spacers further includes a third spacer element placed on the image-side side of the third lens, a fourth spacer element placed on the image-side side of the fourth lens, and a fifth spacer element placed on the image-side side of the fifth lens, wherein the spacing distance EP34 between the third and fourth spacers along the optical axis, the air gap T34 between the third and fourth lenses on the optical axis, the maximum thickness CP5 of the fifth spacer element along the optical axis, and the air gap T56 between the fifth and sixth lenses on the optical axis satisfy: 7.25≤EP34 / T34+CP5 / T56<10.

0.

18. The optical camera lens according to any one of claims 10-14, wherein, The plurality of spacers further includes a sixth spacer element disposed on the image-side surface of the sixth lens, wherein, The inner diameter d6m of the image side of the sixth spacer element, the outer diameter D6m of the image side of the sixth spacer element, the radius of curvature R11 of the object side of the sixth lens, and the center thickness CT5 of the fifth lens on the optical axis satisfy: 22.47≤d6m / R11+D6m / CT5≤28.54.

Images