Optical camera lens

Abstract

The application discloses an optical camera lens, comprising: a lens group, comprising a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens arranged in sequence from an object side to an image side along an optical axis, wherein the first lens, the fourth lens and the sixth lens have positive refractive powers, and the second lens, the third lens, the fifth lens and the seventh lens have negative refractive powers; and a plurality of spacer elements, comprising a fourth spacer located between the fourth lens and the fifth lens and in contact with an image side surface of the fourth lens, and a fifth spacer located between the fifth lens and the sixth lens and in contact with an image side surface of the fifth lens; the optical camera lens satisfies 1.0 < (EP45+CT5) / (T45+CP5) < 2.5, wherein EP45 is a distance between the fourth spacer and the fifth spacer, CP5 is a maximum thickness of the fifth spacer, CT5 is a central thickness of the fifth lens on the optical axis, and T45 is an air distance of the fourth lens and the fifth lens on the optical axis.

Description

[0001] Divisional application

[0002] This application is a divisional application of Chinese invention patent application filed on July 15, 2022, entitled "Optical Camera Lens" and with application number 202210836301.2. Technical Field

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

[0004] With the development of technology, people have increasingly higher requirements for the photographic performance of mobile phones in different scenarios. Currently, mobile phones use increasingly larger image sensors. To ensure clear imaging and good image quality, it is necessary to improve the lens's ability to avoid stray light during shooting, while also enhancing the stability of the lens assembly. The stability of the lens assembly and the lens's ability to avoid stray light are affected by the structure and layout of the lens elements, as well as the inner and outer diameters and thickness of the spacers. Therefore, how to reasonably and effectively set the structure and layout of the lens elements, the inner and outer diameters and thickness of the spacers, to avoid stray light and improve the stability of the lens assembly, especially how to improve the stray light in the non-imaging part of the second lens, is a problem that urgently needs to be solved. Summary of the Invention

[0005] This application provides an optical camera lens, comprising: a lens group including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens arranged sequentially along the optical axis from the object side to the image side, wherein the first lens, the fourth lens, and the sixth lens have positive optical power, and the second lens, the third lens, the fifth lens, and the seventh lens have negative optical power; and a plurality of spacer elements, including a fourth spacer located between the fourth lens and the fifth lens and in contact with the image side of the fourth lens, and a fifth spacer located between the fifth lens and the sixth lens and in contact with the image side of the fifth lens; the optical camera lens satisfies: 1.0 < (EP45 + CT5) / (T45 + CP5) < 2.5, wherein EP45 is the spacing between the fourth spacer and the fifth spacer, CP5 is the maximum thickness of the fifth spacer, CT5 is the center thickness of the fifth lens on the optical axis, and T45 is the air gap between the fourth lens and the fifth lens on the optical axis.

[0006] In one embodiment, the optical camera lens satisfies: 1.0 < (R7 + R8) / (D4s + d4s) < 5.0, where R7 is the radius of curvature of the object side of the fourth lens, R8 is the radius of curvature of the image side of the fourth lens, D4s is the outer diameter of the object side of the fourth spacer, and d4s is the inner diameter of the object side of the fourth spacer.

[0007] In one embodiment, the optical camera lens satisfies: 3.5 < R9 / d5m < 5.5, where R9 is the radius of curvature of the object-side surface of the fifth lens, and d5m is the inner diameter of the image-side surface of the fifth spacer.

[0008] In one embodiment, the optical camera lens satisfies: ImgH > 6.7 mm; Fno < 1.7; and 2.0 < ∑EP / ∑CP < 4.5, where ∑CP is the sum of the maximum thicknesses of each spacer in the plurality of spacers, ∑EP is the sum of the distances between any two adjacent spacers in the plurality of spacers, ImgH is half the diagonal length of the effective pixel area on the imaging surface of the optical camera lens, and Fno is the relative F-number of the optical camera lens.

[0009] In one embodiment, the optical camera lens further includes a lens barrel for accommodating a lens group and a plurality of spacer elements. The plurality of spacer elements further includes a first spacer located between the first lens and the second lens and in contact with the image side of the first lens. The optical camera lens satisfies: 14.0 < (EP01 + CT1) / T12 < 19.0, where EP01 is the distance from the object side end face of the lens barrel to the first spacer in the direction of the optical axis, CT1 is the center thickness of the first lens in the optical axis, and T12 is the air gap between the first lens and the second lens in the optical axis.

[0010] In one embodiment, the plurality of spacers further includes a first spacer located between the first lens and the second lens and in contact with the image side of the first lens, and a second spacer located between the second lens and the third lens and in contact with the image side of the second lens, and an optical camera lens satisfying: 38.0 < (d1s - d2s + CT2) / CP2 < 45.0, where CT2 is the center thickness of the second lens on the optical axis, d1s is the inner diameter of the object side of the first spacer, d2s is the inner diameter of the object side of the second spacer, and CP2 is the maximum thickness of the second spacer.

[0011] In one embodiment, the plurality of spacers further includes a second spacer located between the second lens and the third lens and in contact with the image-side surface of the second lens, and a third spacer located between the third lens and the fourth lens and in contact with the image-side surface of the third lens, and an optical camera lens satisfying: 57.0 < (T23 + EP23) / CP3 < 61.0, where T23 is the air gap between the second lens and the third lens on the optical axis, CP3 is the maximum thickness of the third spacer, and EP23 is the gap between the second spacer and the third spacer.

[0012] In one embodiment, the plurality of spacers further includes a second spacer located between the second lens and the third lens and in contact with the image-side surface of the second lens, and a third spacer located between the third lens and the fourth lens and in contact with the image-side surface of the third lens, and an optical camera lens satisfying: 12.0 < (R5-R6) / (d3s-d2s) < 17.0, where d2s is the inner diameter of the object-side surface of the second spacer, d3s is the inner diameter of the object-side surface of the third spacer, R5 is the radius of curvature of the object-side surface of the third lens, and R6 is the radius of curvature of the image-side surface of the third lens.

[0013] In one embodiment, the plurality of spacers further includes a third spacer located between the third lens and the fourth lens and in contact with the image side of the third lens, and an optical camera lens satisfying: -5.5 < f3 / D3s < -4.0, where f3 is the effective focal length of the third lens and D3s is the outer diameter of the object side of the third spacer.

[0014] In one embodiment, the plurality of spacers further includes a third spacer located between the third lens and the fourth lens and in contact with the image-side surface of the third lens, and an optical camera lens satisfying: 3.0 < (R3 + R4) / d3s < 5.0, where 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 d3s is the inner diameter of the object-side surface of the third spacer.

[0015] In one embodiment, the plurality of spacers further includes a third spacer located between the third lens and the fourth lens and in contact with the image side of the third lens, and an optical camera lens satisfying: 1.0 < (CT4 + T34) / (EP34 + CP4) < 2.5, where CT4 is the center thickness of the fourth lens on the optical axis, T34 is the air gap between the third lens and the fourth lens on the optical axis, EP34 is the gap between the third spacer and the fourth spacer, and CP4 is the maximum thickness of the fourth spacer.

[0016] In one embodiment, the plurality of spacers further includes a sixth spacer located between the sixth lens and the seventh lens and in contact with the image side of the sixth lens, and an optical camera lens satisfying: 6.0 < (EP56 + CT6 + CP6) / T56 < 8.0, where CT6 is the center thickness of the sixth lens on the optical axis, T56 is the air gap between the fifth lens and the sixth lens on the optical axis, EP56 is the gap between the fifth spacer and the sixth spacer, and CP6 is the maximum thickness of the sixth spacer.

[0017] This application employs a seven-element lens architecture. By controlling the sum of the spacing between the fourth and fifth spacers and the center thickness of the five lenses on the optical axis, as well as the sum of the air gap between the fourth and fifth lenses on the optical axis and the maximum thickness of the fifth spacer, the uniformity of the overall thickness of the fifth lens can be controlled, which is beneficial for the processing and forming of the fifth lens. At the same time, the thickness of the fifth spacer can be guaranteed, avoiding the situation where some parts cannot be filled or the structure cannot be formed due to the fifth spacer being too thin, resulting in large deformation during assembly under pressure. Attached Figure Description

[0018] 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:

[0019] Figure 1 A schematic diagram illustrating parameter annotations of an optical camera lens according to an embodiment of this application is shown.

[0020] Figure 2 A schematic diagram showing the light path of an optical camera lens portion according to an embodiment of this application is provided;

[0021] Figure 3 A schematic diagram of the structure of an optical camera lens according to Embodiment 1 of this application is shown;

[0022] Figure 4 A schematic diagram of another optical camera lens according to Embodiment 1 of this application is shown;

[0023] Figures 5A to 5D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens of Example 1 are shown respectively.

[0024] Figure 6 A schematic diagram of the structure of an optical camera lens according to Embodiment 2 of this application is shown;

[0025] Figure 7 A schematic diagram of another optical camera lens according to Embodiment 2 of this application is shown;

[0026] Figures 8A to 8D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens of Example 2 are shown respectively.

[0027] Figure 9 A schematic diagram of the structure of an optical camera lens according to Embodiment 3 of this application is shown;

[0028] Figure 10 A schematic diagram of another optical camera lens according to Embodiment 3 of this application is shown;

[0029] Figures 11A to 11D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens of Example 3 are shown respectively.

[0030] Figure 12 A schematic diagram of the structure of an optical camera lens according to Embodiment 4 of this application is shown;

[0031] Figure 13 A schematic diagram of another optical camera lens according to Embodiment 4 of this application is shown; and

[0032] Figures 14A to 14D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens of Example 4 are shown respectively. Detailed Implementation

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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 formal sense unless expressly so specified herein.

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] The features, principles and other aspects of this application are described in detail below.

[0041] An optical camera lens according to an exemplary embodiment of this application may include a lens group and a spacer element. The lens group may include seven lenses of optical power, arranged sequentially along the optical axis from the object side to the image side as a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The spacer element includes a third spacer located between the third and fourth lenses and in direct contact with the image-side surface of the third lens. An air gap may exist between any two adjacent lenses from the first to the seventh lens.

[0042] In an exemplary embodiment, the first, fourth, and sixth lenses may have positive optical power; the second, third, fifth, and seventh lenses have negative optical power. By controlling the optical power of the optical camera lens, it can be ensured that the optical camera lens meets the imaging requirements.

[0043] In an exemplary embodiment, the optical camera lens according to this application satisfies: 3.0 < (R3 + R4) / d3s < 5.0, where 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 d3s is the inner diameter of the object-side surface of the third spacer. By controlling the ratio of the sum of the radii of curvature of the object-side surface and the image-side surface of the second lens to the radius of curvature of the object-side surface of the third spacer, and by controlling the radius of curvature of the second lens, light rays that undergo internal reflection within the second lens can pass through the third lens and exit at the edge of the effective diameter of the third lens. By controlling the inner diameter of the object-side surface of the third spacer, light rays exiting the third lens can hit the surface of the third spacer, thereby blocking the light rays and achieving the effect of eliminating stray light. More specifically, the ratio of the sum of R3 and R4 to d3s can further satisfy: 3.2 < (R3 + R4) / d3s < 4.8.

[0044] In an exemplary embodiment, the spacer element in the optical camera lens according to this application further includes a first spacer, which is located between the first lens and the second lens and contacts the image-side surface of the first lens. The optical camera lens can satisfy: 14.0 < (EP01 + CT1) / T12 < 19.0, where EP01 is the distance from the object-side surface of the optical camera lens to the first spacer, CT1 is the center thickness of the first lens on the optical axis, and T12 is the air gap between the first lens and the second lens on the optical axis. By controlling the ratio of the sum of the distance from the object-side surface of the optical camera lens to the first spacer and the center thickness CT1 of the first lens on the optical axis to the air gap between the first lens and the second lens on the optical axis within a reasonable range, the overall curvature of the first lens can be controlled, leaving space between the effective diameter edges of the first lens and the second lens, avoiding interference between the first lens and the second lens, and comprehensively considering the manufacturability of the mold. Through this conditional formula, when the air gap between the first lens and the second lens is constant, the curvature and center thickness of the first lens can be balanced, making the contour shape of the first lens gradually uniform, resulting in a better structure and facilitating molding. More specifically, the ratio of the difference between EP01 and CT1 to T12 further satisfies: 14.5 < (EP01 + CT1) / T12 < 18.5.

[0045] In an exemplary embodiment, the spacer element in the optical camera lens according to this application further includes a second spacer located between the second lens and the third lens and in contact with the image-side surface of the second lens. The optical camera lens can satisfy: 38.0 < (d1s - d2s + CT2) / CP2 < 45.0, where CT2 is the center thickness of the second lens on the optical axis, d1s is the inner diameter of the object-side surface of the first spacer, d2s is the inner diameter of the object-side surface of the second spacer, and CP2 is the maximum thickness of the second spacer. By controlling the ratio of the sum of the inner diameter difference between the object sides of the first and second spacers and the center thickness CT2 of the second lens on the optical axis to the maximum thickness CP2 of the second spacer, and in conjunction with the lens forming process requirements, the center thickness of the second lens can be effectively controlled to meet forming requirements. This avoids lens breakage during assembly due to insufficient center thickness, and also prevents poor flowability during forming, which could affect the lens's strength and surface shape. Furthermore, it avoids excessively large lens thickness ratios, which could lead to weld lines, thus improving lens forming and preventing stray light caused by weld lines. More specifically, the ratio of the difference between d1s and d2s to the sum of CT2 and CP2 further satisfies: 38.0 < (d1s - d2s + CT2) / CP2 < 44.8.

[0046] In an exemplary embodiment, the optical camera lens according to this application satisfies: 12.0 < (R5-R6) / (d3s-d2s) < 17.0, where d2s is the inner diameter of the object-side surface of the second spacer, d3s is the inner diameter of the object-side surface of the third spacer, R5 is the radius of curvature of the object-side surface of the third lens, and R6 is the radius of curvature of the image-side surface of the third lens. By reasonably setting the ratio of the difference between the radius of curvature of the object-side surface and the image-side surface of the third lens to the difference between the inner diameters of the object-side surfaces of the third and second spacers, it is beneficial to control the total deflection angle of the edge field of view on the two surfaces within a reasonable range, thereby effectively reducing the sensitivity of the system. By further controlling the inner diameters of the object-side surfaces of the second and third spacers, non-imaging stray light can be effectively blocked, ensuring imaging quality. More specifically, the ratio of the difference between R5 and R6 to the difference between d3s and d2s further satisfies: 12.5 < (R5 - R6) / (d3s - d2s) < 17.0.

[0047] In an exemplary embodiment, the optical camera lens according to this application satisfies: 57.0 < (T23 + EP23) / CP3 < 61.0, where T23 is the air gap between the second and third lenses on the optical axis, CP3 is the maximum thickness of the third spacer, and EP23 is the gap between the second and third spacers. By controlling the ratio of the sum of the air gap T23 between the second and third lenses on the optical axis and the gap EP23 between the second and third spacers to the maximum thickness CP3 of the third spacer, it is beneficial to balance the edge thickness of the third lens with the air gap between the second and third lenses, effectively ensuring the edge thickness of the third lens. When the thickness of the third spacer increases, the air gap between the second and third lenses on the optical axis increases accordingly, which reduces the impact on the edge thickness of the third lens, ensuring that the edge thickness of the third lens meets the forming conditions and preventing edge breakage during lens forming and assembly due to insufficient edge thickness of the third lens. More specifically, the ratio of the sum of T23 and EP23 to CP3 can further satisfy: 57.5 < (T23 + EP23) / CP3 < 60.5.

[0048] In an exemplary embodiment, the optical camera lens according to this application satisfies: -5.5 < f3 / D3s < -4.0, where f3 is the effective focal length of the third lens and D3s is the outer diameter of the object-side surface of the third spacer. By controlling the ratio of the effective focal length f3 of the third lens to the outer diameter D3s of the object-side surface of the third spacer, the light is converged by the first lens and then appropriately diverged by the negative optical power third lens to ensure the effect of increasing the effective focal length. At the same time, the field curvature is corrected by the two lenses to achieve a good imaging effect. Reasonably controlling the outer diameter of the object-side surface of the third spacer is beneficial to ensuring the stability of the assembly. More specifically, the ratio of f3 to D3s further satisfies: -5.4 < f3 / D3s < -4.0.

[0049] In an exemplary embodiment, the spacer element in the optical camera lens according to this application further includes a fourth spacer located between the fourth lens and the fifth lens and in contact with the image-side surface of the fourth lens. The optical camera lens satisfies: 1.0 < (R7 + R8) / (D4s + d4s) < 5.0, where R7 is the radius of curvature of the object-side surface of the fourth lens, R8 is the radius of curvature of the image-side surface of the fourth lens, D4s is the outer diameter of the object-side surface of the fourth spacer, and d4s is the inner diameter of the object-side surface of the fourth spacer. By controlling the ratio of the sum of the radii of curvature of the object-side and image-side surfaces of the fourth lens to the sum of the inner diameter and outer diameter of the object-side surface of the fourth spacer, the curvature of the object-side and image-side surfaces of the fourth lens can be controlled, reducing the overall curvature of the fourth lens, making the overall structure of the lens smoother, which is beneficial to the flowability of the material during the molding process; avoiding changes in material flowability during the molding process due to excessive curvature of the effective diameter of the fourth lens, resulting in a deterioration of the surface shape, and also avoiding large deformation during assembly due to excessive curvature of the entire lens. More specifically, the ratio of the sum of R7 and R8 to the sum of D4s and d4s can further satisfy: 1.3 < (R7 + R8) / (D4s + d4s) < 4.5.

[0050] In an exemplary embodiment, the optical camera lens according to this application satisfies: 1.0 < (CT4 + T34) / (EP34 + CP4) < 2.5, where CT4 is the center thickness of the fourth lens on the optical axis, T34 is the air gap between the third and fourth lenses on the optical axis, EP34 is the gap between the third and fourth spacers, and CP4 is the maximum thickness of the fourth spacer. By controlling the ratio of the sum of the air gap T34 between the third and fourth lenses on the optical axis and the maximum thickness CP4 of the fourth spacer, to the sum of the gap EP34 between the third and fourth spacers and the maximum thickness CP4 of the fourth spacer, the uniformity of the fourth lens profile shape can be effectively controlled. This avoids problems such as excessively large or small center and edge thicknesses affecting the lens surface shape, strength, and material flowability, thus increasing the lens processing cost. It also avoids weld lines caused by excessively large thickness-to-weight ratios of the fourth lens. Furthermore, it can be controlled that excessive thickness of the fourth lens would increase weight and material costs. Reasonably controlling the air gap between the third and fourth lenses on the optical axis helps improve space utilization, making it more suitable for size-constrained systems. More specifically, the ratio of the sum of CT4 and T34 to the sum of EP34 and CP4 can further satisfy: 1.3 < (CT4 + T34) / (EP34 + CP4) < 2.1.

[0051] In an exemplary embodiment, the spacer element in the optical camera lens according to this application further includes a fifth spacer located between the fifth lens and the sixth lens and in contact with the image-side surface of the fifth lens. The optical camera lens satisfies: 3.5 < R9 / d5m < 5.5, where R9 is the radius of curvature of the object-side surface of the fifth lens, and d5m is the inner diameter of the image-side surface of the fifth spacer. By controlling the ratio of the radius of curvature R9 of the object-side surface of the fifth lens to the inner diameter d5m of the image-side surface of the fifth spacer, the radius of curvature of the object-side surface of the fifth lens can be controlled, preventing the object-side surface from being too curved, resulting in excessive thickness of the fifth lens edge, affecting the molding, and avoiding the risk of weld lines caused by excessive thickness ratio; by controlling the inner diameter of the image-side surface of the fifth spacer, excessive outer diameter of the fifth lens can be avoided, which would form a large step difference with the fourth lens, affecting lens assembly and ultimately affecting the overall performance of the lens. More specifically, the ratio of R9 to d5m can further satisfy: 3.6 < R9 / d5m < 5.1.

[0052] In an exemplary embodiment, the optical camera lens according to this application satisfies: 1.0 < (EP45 + CT5) / (T45 + CP5) < 2.5, where EP45 is the spacing between the fourth and fifth spacers, CP5 is the maximum thickness of the fifth spacer, CT5 is the center thickness of the fifth lens on the optical axis, and T45 is the air gap between the fourth and fifth lenses on the optical axis. By controlling the sum of the spacing EP45 between the fourth and fifth spacers and the center thickness CT5 of the fifth lens on the optical axis, and by controlling the sum of the air gap T45 between the fourth and fifth lenses on the optical axis and the maximum thickness CP5 of the fifth spacer, the uniformity of the overall thickness of the fifth lens can be controlled, which is beneficial to the processing and forming of the fifth lens; at the same time, the thickness of the fifth spacer can be guaranteed, avoiding large deformation during assembly under pressure due to insufficient thickness of the fifth spacer, which would result in some positions not being filled or the structure not being formed during the forming process. Furthermore, the ratio of the sum of EP45 and CT5 to the sum of T45 and CP5 can satisfy: 1.2 < (EP45 + CT5) / (T45 + CP5) < 2.3.

[0053] In an exemplary embodiment, the spacer element in the optical camera lens according to this application further includes a sixth spacer located between the sixth lens and the seventh lens and in contact with the image-side surface of the sixth lens. The optical camera lens satisfies: 6.0 < (EP56 + CT6 + CP6) / T56 < 8.0, where CT6 is the center thickness of the sixth lens on the optical axis, T56 is the air gap between the fifth and sixth lenses on the optical axis, EP56 is the gap between the fifth spacer and the sixth spacer, and CP6 is the maximum thickness of the sixth spacer. By controlling the ratio of the sum of the center thickness CT6 of the sixth lens on the optical axis, the maximum thickness CP6 of the sixth spacer, and the gap EP56 between the fifth and sixth spacers to the air gap T56 between the fifth and sixth lenses on the optical axis, the thickness of the sixth spacer can be guaranteed. Since the difference in thickness between the sixth and seventh lenses is significant, insufficient overall strength due to an excessively thin sixth spacer is avoided, preventing large deformations during assembly. Simultaneously, the uniformity of the overall lens thickness of the sixth lens can be controlled, preventing poor surface shapes during molding. Furthermore, the air gap between the fifth and sixth lenses can be controlled, ensuring the thickness of the fifth spacer and improving assembly stability. More specifically, the ratio of the sum of EP56, CT6, and CP6 to T56 can further satisfy: 6.5 < (EP56 + CT6 + CP6) / T56 < 7.8.

[0054] In an exemplary embodiment, the optical camera lens according to this application satisfies the following conditions: ImgH > 6.7mm, Fno < 1.7, and 2.0 < ∑EP / ∑CP < 4.5, where ∑CP is the sum of the maximum thicknesses of each spacer in the spacer elements, ∑EP is the sum of the distances between any two adjacent spacers in the spacer elements, ImgH is half the diagonal length of the effective pixel area on the imaging plane of the optical camera lens, and Fno is the relative F-number of the optical camera lens. When the system satisfies ImgH > 6.7mm and Fno < 1.7, the design requirements can be met, and further controlling ∑CP and ∑EP to satisfy 2.0 < ∑EP / ∑CP < 4.5 can improve the assembly stability of the optical camera lens. More specifically, the ratio of ∑EP and ∑CP can further satisfy: 2.2 < ∑EP / ∑CP < 4.5.

[0055] In an exemplary embodiment, the effective focal length f1 of the first lens may be, for example, in the range of 6.5mm to 8.5mm, the effective focal length f2 of the second lens may be, for example, in the range of -50mm to -22mm, the effective focal length f3 of the third lens may be, for example, in the range of -35mm to -22mm, the effective focal length f4 of the fourth lens may be, for example, in the range of 15mm to 25mm, the effective focal length f5 of the fifth lens may be, for example, in the range of -22mm to -14mm, the effective focal length f6 of the sixth lens may be, for example, in the range of 5mm to 7mm, and the effective focal length f7 of the seventh lens may be, for example, in the range of -6mm to -5mm.

[0056] In an exemplary embodiment, half the diagonal length of the effective pixel area on the imaging surface of the optical camera lens can be, for example, in the range of 6.7 mm to 7.0 mm, and the aperture number Fno of the optical camera lens can be, for example, in the range of 1.5 to 1.7.

[0057] In an exemplary embodiment, the optical camera lens according to this application further includes an aperture stop, which may be disposed between the object side and the first lens. Optionally, the optical camera lens may also include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging plane.

[0058] This application proposes an optical camera lens solution that achieves a smaller overall lens length and head size while maintaining a relatively large aperture. The optical camera lens according to the above-described embodiment of this application can employ multiple lens elements, such as the seven elements described above. By rationally allocating the optical power and surface shape of each lens, the center thickness of each lens, and the on-axis spacing between each lens, incident light can be effectively converged, the overall optical length of the optical camera lens can be reduced, and the manufacturability of the optical camera lens can be improved, making the optical camera lens more conducive to production and processing.

[0059] 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 curvature radius characteristics, and has the advantages of improving distortion aberrations and astigmatism aberrations. By using an aspherical lens, aberrations occurring during imaging can be eliminated as much as possible, thereby improving image quality. Optionally, at least one of the object-side and image-side surfaces of each of the first, second, third, fourth, fifth, sixth, and seventh lenses is an aspherical mirror surface. Optionally, both the object-side and image-side surfaces of each of the first, second, third, fourth, fifth, sixth, and seventh lenses are aspherical mirror surfaces.

[0060] 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.

[0061] 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. Figure 1 The diagram below shows the structure of an optical camera lens according to an embodiment of this application. The lens portions corresponding to the structural parameters of any part of the optical camera lens provided in Embodiments 1 to 4 of this application can be referenced. Figure 1 As shown. Figure 2 A schematic diagram showing the light path of an optical camera lens portion according to an embodiment of this application is shown. Figure 2 As shown, some of the light entering the lens is reflected at the second lens, forming stray light. By properly setting the curvature radius of the object side and image side of the second lens and the inner diameter of the object side of the third spacer, the stray light formed by the reflection at the second lens can be effectively eliminated.

[0062] Example 1

[0063] The following is for reference Figures 3 to 5D Describes an optical camera lens according to Embodiment 1 of this application. Figure 3 Show to Figure 4 Schematic diagrams of the optical camera lenses 110 and 120 according to Embodiment 1 of this application are shown respectively.

[0064] like Figures 3 to 4As shown, both optical camera lenses 110 and 120 may include a lens group, which, along the optical axis from the object side to the image side, sequentially includes: an aperture stop STO, 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. Optionally, optical camera lenses 110 and 120 may also include a filter E8 and an imaging plane S17.

[0065] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0066] Table 1 shows the basic parameters of the optical camera lenses 110 and 120 of Embodiment 1, where the units for radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0067]

[0068]

[0069] Table 1

[0070] In this example, half the diagonal length of the effective pixel area on the imaging surface of optical cameras 110 and 120 is 6.71 mm, and their aperture number Fno is 1.65.

[0071] 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:

[0072]

[0073] 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 below 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 .

[0074] Face number A4 A6 A8 A10 A12 A14 A16 S1 -7.0568E-03 -3.8438E-03 -2.0183E-03 -7.0649E-04 -2.7682E-04 -7.1316E-05 -3.5119E-05 S2 -7.7743E-02 1.1363E-02 -4.9496E-03 3.2145E-04 -4.3757E-04 7.1212E-05 -1.0206E-04 S3 -2.5485E-02 3.1817E-02 -2.2158E-03 1.6781E-03 -1.8832E-04 1.7363E-04 -1.1867E-04 S4 2.4603E-03 1.6305E-02 -7.5588E-04 1.2590E-03 1.2318E-04 2.6662E-04 -1.1886E-05 S5 -2.4466E-01 -5.9501E-03 5.0925E-05 9.8183E-04 4.0713E-04 1.5614E-04 6.9060E-05 S6 -3.0895E-01 1.3205E-02 6.8550E-03 2.2757E-03 1.9068E-03 1.5290E-04 -1.5346E-04 S7 -1.1025E-01 2.2545E-03 1.0227E-03 2.0317E-03 3.7336E-03 2.6695E-04 -3.4205E-04 S8 -2.7944E-01 -2.7609E-02 -2.8106E-04 5.3712E-03 7.4582E-03 4.4577E-03 2.1416E-03 S9 -8.5424E-01 -4.0977E-02 2.8935E-02 3.2999E-02 5.8830E-03 2.0534E-03 -1.9311E-03 S10 -1.7847E+00 4.7476E-01 -4.0587E-02 7.1125E-03 -3.2228E-02 1.1506E-02 3.4948E-03 S11 -4.9162E+00 8.8779E-01 6.5427E-02 -6.8632E-02 -4.4177E-02 3.3819E-02 3.6895E-03 S12 -2.4116E+00 4.6236E-02 1.6542E-01 -1.1195E-01 4.7158E-02 -2.0183E-03 3.4554E-03 S13 -1.5043E+00 1.2415E+00 -6.5561E-01 2.9564E-01 -1.1240E-01 2.2462E-02 -3.0935E-03 S14 -7.3390E+00 1.8601E+00 -4.6976E-01 2.0276E-01 -1.1289E-01 2.6563E-02 -2.1926E-02

[0075] Table 2-1

[0076]

[0077]

[0078] Table 2-2

[0079] like Figure 3 As shown, the optical camera lens 110 may further include spacer elements and a lens barrel for accommodating the aforementioned optical lens group and spacer elements. Spacer elements may include, for example, a first spacer P1 located between the first lens E1 and the second lens E2, a second spacer P2 located between the second lens E2 and the third lens E3, a third spacer P3 located between the third lens E3 and the fourth lens E4, a fourth spacer P4 located between the fourth lens E4 and the fifth lens E5, a fifth spacer P5 located between the fifth lens E5 and the sixth lens E6, and a sixth spacer P6 located between the sixth lens E6 and the seventh lens E7.

[0080] like Figure 4 As shown, the optical camera lens 120 may further include spacer elements and a lens barrel for accommodating the aforementioned optical lens group and spacer elements. Spacer elements may include, for example, a first spacer P1 located between the first lens E1 and the second lens E2, a second spacer P2 located between the second lens E2 and the third lens E3, a third spacer P3 located between the third lens E3 and the fourth lens E4, a fourth spacer P4 located between the fourth lens E4 and the fifth lens E5, a fifth spacer P5 located between the fifth lens E5 and the sixth lens E6, and a sixth spacer P6 located between the sixth lens E6 and the seventh lens E7.

[0081] In an exemplary embodiment, the first spacer P1 may contact the image-side surface of the first lens E1, the second spacer P2 may contact the image-side surface of the second lens E2, the third spacer P3 may contact the image-side surface of the third lens E3, the fourth spacer P4 may contact the image-side surface of the fourth lens E4, the fifth spacer P5 may contact the image-side surface of the fifth lens E5, and the sixth spacer P6 may contact the image-side surface of the sixth lens E6.

[0082] Figure 5A The on-axis chromatic aberration curve of the optical camera lens of Embodiment 1 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 5B The astigmatism curve of the optical camera lens of Embodiment 1 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 5C The distortion curve of the optical camera lens of Embodiment 1 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 5D The magnification chromatic aberration curve of the optical camera lens of Embodiment 1 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to... Figures 5A to 5D It can be seen that the optical camera lens given in Example 1 can achieve good imaging quality.

[0083] Example 2

[0084] The following is for reference Figures 6 to 8D An optical camera lens according to Embodiment 2 of this application is described. Figures 6 to 7 Schematic diagrams of the optical camera lenses 210 and 220 according to Embodiment 2 of this application are shown respectively.

[0085] like Figures 6 to 7 As shown, both optical camera lenses 210 and 220 include lens groups, which, along the optical axis from the object side to the image side, sequentially include: an aperture stop STO, 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. Optionally, optical camera lenses 210 and 220 may also include a filter E8 and an imaging plane S17.

[0086] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged on the imaging surface S17.

[0087] In this example, half the diagonal length of the effective pixel area on the imaging surface of optical cameras 210 and 220 is 6.78 mm, and their aperture number Fno is 1.60.

[0088] Table 3 shows the basic parameters of the optical camera lenses 210 and 220 of Embodiment 2, wherein the units of radius of curvature, thickness / distance and focal length are millimeters (mm). Tables 4-1 and 4-2 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.

[0089]

[0090] Table 3

[0091] Face number A4 A6 A8 A10 A12 A14 A16 S1 3.5652E-03 -3.3882E-03 -2.4973E-03 -8.8856E-04 -2.6695E-04 -5.8700E-05 -2.0884E-05 S2 -7.1235E-02 8.1438E-03 -2.8447E-03 -1.4207E-04 -4.1849E-04 -2.0698E-04 -3.5112E-05 S3 -1.6185E-02 2.4628E-02 4.3829E-04 1.3674E-03 1.5244E-04 6.9042E-06 -2.8620E-05 S4 1.4599E-02 1.2351E-02 5.2721E-04 9.8433E-04 3.5084E-04 1.3293E-04 5.6230E-05 S5 -2.4337E-01 -7.3692E-03 5.6555E-04 1.2117E-03 3.2101E-04 1.6949E-04 2.2417E-05 S6 -3.1286E-01 1.3957E-02 6.4665E-03 2.9925E-03 1.2768E-03 2.9496E-04 -1.6215E-04 S7 -1.1688E-01 7.8891E-03 -9.7829E-04 2.8304E-03 2.8199E-03 5.6666E-04 -2.3027E-04 S8 -3.0645E-01 -2.1325E-02 -2.3947E-03 5.9603E-03 7.1831E-03 4.6037E-03 2.1715E-03 S9 -9.1414E-01 -3.5191E-02 2.9598E-02 3.2538E-02 5.4363E-03 1.9079E-03 -1.5968E-03 S10 -1.7934E+00 4.6442E-01 -3.4260E-02 6.0196E-03 -3.1105E-02 1.0514E-02 3.7272E-03 S11 -4.6840E+00 8.1814E-01 9.3969E-02 -7.3194E-02 -4.5164E-02 3.2714E-02 3.2158E-03 S12 -1.7795E+00 -3.7863E-02 1.9018E-01 -1.2102E-01 5.0642E-02 -3.5221E-03 3.4037E-03 S13 -3.0631E+00 1.6000E+00 -7.8290E-01 3.3115E-01 -1.1083E-01 1.8908E-02 -1.2068E-03 S14 -8.4474E+00 1.9346E+00 -5.2558E-01 2.1811E-01 -1.0643E-01 3.8336E-02 -2.7729E-02

[0092] Table 4-1

[0093] Face number A18 A20 A22 A24 A26 A28 A30 S1 -1.6090E-06 -1.0413E-06 4.3780E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 4.5994E-05 4.4199E-05 1.8464E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 -1.6304E-06 -6.0931E-06 4.0879E-06 -7.1828E-06 -1.4728E-06 -1.2763E-06 4.9264E-06 S4 2.0987E-05 9.1454E-06 3.4018E-06 2.1830E-06 8.9331E-08 1.1737E-06 -1.4206E-07 S5 2.1118E-05 -5.8721E-06 7.5969E-06 -1.9593E-06 4.7538E-06 -2.0755E-06 -6.6203E-08 S6 -3.2835E-05 -2.0739E-06 -3.1344E-05 -9.4797E-06 -4.9600E-07 3.0995E-06 -2.1706E-06 S7 -3.8848E-05 -9.9096E-05 -9.3244E-05 -8.3606E-07 1.5472E-05 7.3692E-06 4.3261E-06 S8 8.0192E-04 2.2452E-04 -8.0712E-05 -1.2066E-04 -1.2597E-04 -6.1166E-05 -4.0486E-05 S9 -1.2065E-03 -7.7526E-04 -5.4629E-05 1.6268E-04 1.3090E-04 1.7744E-05 -2.7944E-06 S10 3.7602E-04 -1.9410E-03 -1.0812E-04 3.8352E-04 1.9275E-04 -9.8925E-05 -5.2224E-05 S11 -5.0804E-03 -2.3566E-03 2.2258E-03 1.1384E-04 -4.7718E-04 -8.1208E-05 2.0588E-04 S12 -5.7434E-03 1.8132E-03 -5.4811E-04 -1.5448E-04 -3.1717E-04 2.1891E-04 7.3593E-05 S13 2.8335E-03 -5.4270E-03 3.2817E-03 -1.0861E-03 -1.5920E-04 2.5458E-04 -1.1015E-04 S14 1.4733E-02 -3.3896E-03 9.7659E-04 -2.1145E-03 9.5732E-04 -1.2204E-04 -5.5981E-05

[0094] Table 4-2

[0095] like Figure 6 As shown, the optical camera lens 210 may further include spacer elements and a lens barrel for accommodating the aforementioned optical lens group and spacer elements. Spacer elements may include, for example, a first spacer P1 located between the first lens E1 and the second lens E2, a second spacer P2 located between the second lens E2 and the third lens E3, a third spacer P3 located between the third lens E3 and the fourth lens E4, a fourth spacer P4 located between the fourth lens E4 and the fifth lens E5, a fifth spacer P5 located between the fifth lens E5 and the sixth lens E6, and a sixth spacer P6 located between the sixth lens E6 and the seventh lens E7.

[0096] like Figure 7 As shown, the optical camera lens 220 may further include spacer elements and a lens barrel for accommodating the aforementioned optical lens group and spacer elements. Spacer elements may include, for example, a first spacer P1 located between the first lens E1 and the second lens E2, a second spacer P2 located between the second lens E2 and the third lens E3, a third spacer P3 located between the third lens E3 and the fourth lens E4, a fourth spacer P4 located between the fourth lens E4 and the fifth lens E5, a fifth spacer P5 located between the fifth lens E5 and the sixth lens E6, and a sixth spacer P6 located between the sixth lens E6 and the seventh lens E7.

[0097] In an exemplary embodiment, the first spacer P1 may contact the image-side surface of the first lens E1, the second spacer P2 may contact the image-side surface of the second lens E2, the third spacer P3 may contact the image-side surface of the third lens E3, the fourth spacer P4 may contact the image-side surface of the fourth lens E4, the fifth spacer P5 may contact the image-side surface of the fifth lens E5, and the sixth spacer P6 may contact the image-side surface of the sixth lens E6.

[0098] Figure 8A The on-axis chromatic aberration curve of the optical camera lens of Embodiment 2 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 8B The astigmatism curve of the optical camera lens of Embodiment 2 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 8C The distortion curve of the optical camera lens of Embodiment 2 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 8D The magnification chromatic aberration curve of the optical camera lens of Embodiment 2 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to... Figures 8A to 8D It can be seen that the optical camera lens given in Example 2 can achieve good imaging quality.

[0099] Example 3

[0100] The following is for reference Figures 9 to 11D An optical camera lens according to Embodiment 3 of this application is described. Figures 9 to 10 Schematic diagrams of the optical camera lenses 310 and 320 according to Embodiment 3 of this application are shown respectively.

[0101] like Figures 9 to 10 As shown, both optical camera lenses 310 and 320 include a lens group, which, along the optical axis from the object side to the image side, sequentially includes: an aperture stop STO, 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. Optionally, optical camera lenses 310 and 320 may also include a filter E8 and an imaging plane S17.

[0102] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0103] In this example, half the diagonal length of the effective pixel area on the imaging surface of optical cameras 310 and 320 is 6.71 mm, and their aperture number Fno is 1.65.

[0104] Table 5 shows the basic parameters of the optical camera lenses 310 and 320 in Embodiment 3, where the units for radius of curvature, thickness / distance, and focal length are millimeters (mm). Tables 6-1 and 6-2 show the higher-order coefficients that can be used for each aspherical mirror in Embodiment 3, where each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0105]

[0106] Table 5

[0107] Face number A4 A6 A8 A10 A12 A14 A16 S1 4.3985E-03 -3.2792E-03 -2.4190E-03 -9.4071E-04 -2.9459E-04 -7.7355E-05 -9.3006E-06 S2 -7.4991E-02 8.8666E-03 -2.8035E-03 -3.4396E-04 -3.5075E-04 -1.8343E-04 -2.6209E-05 S3 -2.0344E-02 2.6562E-02 9.4942E-05 1.3403E-03 1.8706E-04 -5.4416E-06 -4.1281E-05 S4 1.0589E-02 1.3250E-02 7.0578E-05 1.0024E-03 3.7990E-04 1.4475E-04 6.1045E-05 S5 -2.4744E-01 -5.6654E-03 9.9954E-05 1.1905E-03 3.4833E-04 1.9604E-04 2.9654E-05 S6 -3.1091E-01 1.5072E-02 5.7363E-03 3.3539E-03 1.0872E-03 3.2500E-04 -1.8325E-04 S7 -1.0990E-01 4.3966E-03 -4.5792E-05 3.1215E-03 2.4339E-03 6.2896E-04 -2.4545E-04 S8 -2.9240E-01 -2.1783E-02 -2.0786E-03 5.8123E-03 6.9149E-03 4.5933E-03 2.1962E-03 S9 -8.8777E-01 -3.3324E-02 2.7801E-02 3.2224E-02 5.6771E-03 2.1350E-03 -1.4862E-03 S10 -1.6633E+00 4.3833E-01 -2.3015E-02 1.3255E-03 -3.0522E-02 9.8561E-03 4.6154E-03 S11 -4.5172E+00 7.8564E-01 9.7620E-02 -7.3743E-02 -4.3286E-02 3.1608E-02 3.7140E-03 S12 -2.0021E+00 3.7208E-03 1.6767E-01 -1.0797E-01 4.3731E-02 -8.0388E-04 3.1516E-03 S13 -1.9428E+00 1.3134E+00 -6.6958E-01 2.8425E-01 -9.1894E-02 1.0179E-02 3.3801E-03 S14 -7.3596E+00 1.6488E+00 -4.0083E-01 1.7029E-01 -7.7874E-02 2.1774E-02 -2.0895E-02

[0108] Table 6-1

[0109] Face number A18 A20 A22 A24 A26 A28 A30 S1 6.2260E-06 1.1744E-05 7.6668E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 4.4385E-05 3.7317E-05 1.3981E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 -1.2729E-05 -2.0620E-05 -7.0946E-06 -1.7431E-05 -5.5306E-06 -1.3516E-06 7.3689E-06 S4 2.6866E-05 1.1598E-05 6.0040E-06 3.9015E-07 3.1978E-07 6.3381E-07 -1.6353E-06 S5 2.2839E-05 -5.2211E-06 1.0562E-05 -1.4320E-06 4.2485E-06 -3.2535E-06 3.9609E-07 S6 -4.6517E-05 -1.6086E-05 -1.8039E-05 -1.3326E-05 -1.8915E-07 -3.2364E-07 -1.7028E-06 S7 -7.2349E-05 -8.5150E-05 -7.4338E-05 -7.6023E-06 1.5749E-05 8.0268E-06 3.0302E-06 S8 8.0151E-04 2.2950E-04 -7.6946E-05 -1.1755E-04 -1.3161E-04 -6.4001E-05 -4.4494E-05 S9 -1.3317E-03 -9.3482E-04 -1.1671E-04 1.7077E-04 1.7081E-04 3.6939E-05 2.7219E-06 S10 2.3137E-04 -2.0932E-03 -1.8882E-04 4.4997E-04 2.2204E-04 -9.5029E-05 -6.7779E-05 S11 -5.8563E-03 -1.8601E-03 2.1560E-03 2.4213E-04 -4.0660E-04 -1.4333E-04 1.2644E-04 S12 -5.8857E-03 1.8176E-03 -5.3271E-04 -6.7744E-05 -3.4689E-04 1.1348E-04 8.3979E-05 S13 -1.0099E-03 -2.4275E-03 1.6944E-03 -8.8725E-04 2.0214E-04 -1.0847E-04 2.7157E-05 S14 1.0428E-02 -1.3890E-03 2.0562E-04 -1.8194E-03 8.2237E-04 -7.4592E-05 -1.2135E-05

[0110] Table 6-2

[0111] like Figure 9 As shown, the optical camera lens 310 may further include spacer elements and a lens barrel for accommodating the aforementioned optical lens group and spacer elements. Spacer elements may include, for example, a first spacer P1 located between the first lens E1 and the second lens E2, a second spacer P2 located between the second lens E2 and the third lens E3, a third spacer P3 located between the third lens E3 and the fourth lens E4, a fourth spacer P4 located between the fourth lens E4 and the fifth lens E5, a fifth spacer P5 located between the fifth lens E5 and the sixth lens E6, and a sixth spacer P6 located between the sixth lens E6 and the seventh lens E7.

[0112] like Figure 10 As shown, the optical camera lens 320 may further include spacer elements and a lens barrel for accommodating the aforementioned optical lens group and spacer elements. Spacer elements may include, for example, a first spacer P1 located between the first lens E1 and the second lens E2, a second spacer P2 located between the second lens E2 and the third lens E3, a third spacer P3 located between the third lens E3 and the fourth lens E4, a fourth spacer P4 located between the fourth lens E4 and the fifth lens E5, a fifth spacer P5 located between the fifth lens E5 and the sixth lens E6, and a sixth spacer P6 located between the sixth lens E6 and the seventh lens E7.

[0113] In an exemplary embodiment, the first spacer P1 may contact the image-side surface of the first lens E1, the second spacer P2 may contact the image-side surface of the second lens E2, the third spacer P3 may contact the image-side surface of the third lens E3, the fourth spacer P4 may contact the image-side surface of the fourth lens E4, the fifth spacer P5 may contact the image-side surface of the fifth lens E5, and the sixth spacer P6 may contact the image-side surface of the sixth lens E6.

[0114] Figure 11A The on-axis chromatic aberration curve of the optical camera lens of Embodiment 3 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 11B The astigmatism curve of the optical camera lens of Embodiment 3 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 11C The distortion curve of the optical camera lens of Embodiment 3 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 11D The magnification chromatic aberration curve of the optical camera lens of Embodiment 3 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to... Figures 11A to 11D It can be seen that the optical camera lens given in Example 3 can achieve good imaging quality.

[0115] Example 4

[0116] The following is for reference Figures 12 to 14D An optical camera lens according to Embodiment 4 of this application is described. Figures 12 to 13 Schematic diagrams of the optical camera lenses 410 and 420 according to Embodiment 3 of this application are shown respectively.

[0117] like Figures 12 to 13As shown, both optical camera lenses 410 and 420 include a lens group, which, along the optical axis from the object side to the image side, sequentially includes: an aperture stop STO, 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. Optionally, optical camera lenses 410 and 420 may also include a filter E8 and an imaging plane S17.

[0118] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0119] In this example, half the diagonal length of the effective pixel area on the imaging plane of optical cameras 410 and 420 is 6.74 mm, and their aperture number Fno is 1.68.

[0120] Table 7 shows the basic parameters of optical camera lenses 410 and 420 in Embodiment 4, where the units for radius of curvature, thickness / distance, and 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 4, where each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0121]

[0122]

[0123] Table 7

[0124] Face number A4 A6 A8 A10 A12 A14 A16 S1 -3.3039E-03 -4.7453E-03 -2.3595E-03 -6.9899E-04 -1.7992E-04 -3.3654E-05 -1.3051E-05 S2 -5.7866E-02 7.5085E-03 -3.1641E-03 -1.1235E-04 -5.0237E-04 -1.1270E-04 2.5681E-05 S3 -4.7284E-03 2.3064E-02 9.7295E-04 1.1983E-03 2.6708E-05 -3.9149E-06 -2.7100E-05 S4 1.9074E-02 1.1338E-02 1.3150E-03 8.9974E-04 3.0653E-04 9.8995E-05 4.5245E-05 S5 -2.3347E-01 -8.9966E-03 1.0041E-03 1.2508E-03 2.5247E-04 1.5513E-04 5.3344E-06 S6 -3.3155E-01 1.6280E-02 6.2147E-03 2.8628E-03 1.4057E-03 4.5066E-04 -2.7865E-04 S7 -1.5902E-01 1.7908E-02 -3.7648E-03 2.7690E-03 3.3292E-03 7.3802E-04 -4.0406E-04 S8 -3.2521E-01 -1.7370E-02 -3.5833E-03 6.2118E-03 7.3185E-03 4.5803E-03 2.0493E-03 S9 -9.0325E-01 -3.6117E-02 3.1383E-02 3.1894E-02 4.9258E-03 2.0212E-03 -1.4754E-03 S10 -1.7731E+00 4.5819E-01 -3.5489E-02 8.6540E-03 -3.2323E-02 1.1592E-02 2.7664E-03 S11 -4.9091E+00 8.8485E-01 6.5549E-02 -6.2738E-02 -4.7554E-02 3.4292E-02 1.6304E-03 S12 -2.3972E+00 5.3757E-02 1.5518E-01 -1.0809E-01 4.5980E-02 -2.5807E-03 4.6839E-03 S13 -2.0689E+00 1.3541E+00 -6.9239E-01 2.9789E-01 -1.0108E-01 1.5036E-02 1.3474E-03 S14 -7.4349E+00 1.8152E+00 -4.7466E-01 1.7901E-01 -8.6554E-02 2.7874E-02 -2.2401E-02

[0125] Table 8-1

[0126]

[0127]

[0128] Table 8-2

[0129] like Figure 12As shown, the optical camera lens 410 may further include spacer elements and a lens barrel for accommodating the aforementioned optical lens group and spacer elements. Spacer elements may include, for example, a first spacer P1 located between the first lens E1 and the second lens E2, a second spacer P2 located between the second lens E2 and the third lens E3, a third spacer P3 located between the third lens E3 and the fourth lens E4, a fourth spacer P4 located between the fourth lens E4 and the fifth lens E5, a fifth spacer P5 located between the fifth lens E5 and the sixth lens E6, and a sixth spacer E6 located between the sixth lens E6 and the seventh lens E7.

[0130] like Figure 13 As shown, the optical camera lens 420 may further include spacer elements and a lens barrel for accommodating the aforementioned optical lens group and spacer elements. Spacer elements may include, for example, a first spacer P1 located between the first lens E1 and the second lens E2, a second spacer P2 located between the second lens E2 and the third lens E3, a third spacer P3 located between the third lens E3 and the fourth lens E4, a fourth spacer P4 located between the fourth lens E4 and the fifth lens E5, a fifth spacer P5 located between the fifth lens E5 and the sixth lens E6, and a sixth spacer P6 located between the sixth lens E6 and the seventh lens E7.

[0131] In an exemplary embodiment, the first spacer P1 may contact the image-side surface of the first lens E1, the second spacer P2 may contact the image-side surface of the second lens E2, the third spacer P3 may contact the image-side surface of the third lens E3, the fourth spacer P4 may contact the image-side surface of the fourth lens E4, the fifth spacer P5 may contact the image-side surface of the fifth lens E5, and the sixth spacer P6 may contact the image-side surface of the sixth lens P6.

[0132] Figure 14A The on-axis chromatic aberration curve of the optical camera lens of Embodiment 4 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 14B The astigmatism curve of the optical camera lens of Embodiment 4 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 14C The distortion curve of the optical camera lens of Example 4 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 14D The magnification chromatic aberration curve of the optical camera lens of Embodiment 4 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to... Figures 14A to 14D It can be seen that the optical camera lens given in Example 4 can achieve good imaging quality.

[0133] The specific dimensional parameters of the optical camera lenses provided in Embodiments 1 to 4 of this application are shown in Table 9, and they respectively satisfy the relationships shown in Table 10.

[0134]

[0135]

[0136] Table 9

[0137]

[0138] Table 10

[0139] 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.

[0140] 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, Comprising: A lens group including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens arranged in sequence from the object side to the image side along the optical axis. Among them, the first lens, the fourth lens, and the sixth lens have positive optical powers, and the second lens, the third lens, the fifth lens, and the seventh lens have negative optical powers; and A plurality of spacer elements including a fourth spacer located between the fourth lens and the fifth lens and in contact with the image side surface of the fourth lens, and a fifth spacer located between the fifth lens and the sixth lens and in contact with the image side surface of the fifth lens; The optical camera lens satisfies: 1.0 < (EP45 + CT5) / (T45 + CP5) < 2.5, where EP45 is the distance between the fourth spacer and the fifth spacer, CP5 is the maximum thickness of the fifth spacer, CT5 is the central thickness of the fifth lens on the optical axis, and T45 is the air gap between the fourth lens and the fifth lens on the optical axis.

2. The optical camera lens according to claim 1, characterized in that, The optical camera lens satisfies: 1.0 < (R7 + R8) / (D4s + d4s) < 5.0, where R7 is the radius of curvature of the object side surface of the fourth lens, R8 is the radius of curvature of the image side surface of the fourth lens, D4s is the outer diameter of the object side surface of the fourth spacer, and d4s is the inner diameter of the object side surface of the fourth spacer.

3. The optical camera lens according to claim 1, characterized in that, The optical camera lens satisfies: 3.5 < R9 / d5m < 5.5, where R9 is the radius of curvature of the object side surface of the fifth lens, and d5m is the inner diameter of the image side surface of the fifth spacer.

4. The optical camera lens according to claim 1, characterized in that, The optical camera lens satisfies: ImgH > 6.7mm; 1.5 < Fno < 1.7; and 2.0 < ∑EP / ∑CP < 4.5, where ∑CP is the sum of the maximum thicknesses of each spacer among the plurality of spacer elements, ∑EP is the sum of the distances between two adjacent spacers among the plurality of spacer elements, ImgH is half of the diagonal length of the effective pixel region on the imaging surface of the optical camera lens, and Fno is the relative F-number of the optical camera lens.

5. The optical camera lens according to any one of claims 1 to 4, characterized in that, The optical camera lens further includes a lens barrel for accommodating the lens group and the plurality of spacer elements. The plurality of spacer elements further includes a first spacer located between the first lens and the second lens and in contact with the image side surface of the first lens, and The optical camera lens satisfies: 14.0 < (EP01 + CT1) / T12 < 19.0, 6. The optical camera lens according to any one of claims 1 to 4, characterized in that, where EP01 is the distance from the object side end face of the lens barrel to the first spacer in the direction of the optical axis, CT1 is the central thickness of the first lens on the optical axis, and T12 is the air gap between the first lens and the second lens on the optical axis. The plurality of spacer elements further includes a first spacer located between the first lens and the second lens and in contact with the image side surface of the first lens and a second spacer located between the second lens and the third lens and in contact with the image side surface of the second lens, and The optical camera lens satisfies: 38.0<(d1s-d2s+CT2) / CP2<45.0, Wherein, CT2 is the center thickness of the second lens on the optical axis, d1s is the inner diameter of the object side of the first spacer, d2s is the inner diameter of the object side of the second spacer, and CP2 is the maximum thickness of the second spacer.

7. The optical camera lens according to any one of claims 1 to 4, characterized in that, The plurality of spacers further includes a second spacer located between the second lens and the third lens and in contact with the image-side surface of the second lens, and a third spacer located between the third lens and the fourth lens and in contact with the image-side surface of the third lens. The optical camera lens satisfies: 57.0<(T23+EP23) / CP3<61.0, Wherein, T23 is the air gap between the second lens and the third lens on the optical axis, CP3 is the maximum thickness of the third spacer, and EP23 is the gap between the second spacer and the third spacer.

8. The optical camera lens according to any one of claims 1 to 4, characterized in that, The plurality of spacers further includes a second spacer located between the second lens and the third lens and in contact with the image-side surface of the second lens, and a third spacer located between the third lens and the fourth lens and in contact with the image-side surface of the third lens. The optical camera lens satisfies: 12.0<(R5-R6) / (d3s-d2s)<17.0, Wherein, d2s is the inner diameter of the object side of the second spacer, d3s is the inner diameter of the object side of the third spacer, R5 is the radius of curvature of the object side of the third lens, and R6 is the radius of curvature of the image side of the third lens.

9. The optical camera lens according to any one of claims 1 to 4, characterized in that, The plurality of spacers further includes a third spacer located between the third lens and the fourth lens and in contact with the image-side surface of the third lens, and The optical camera lens satisfies: -5.5 < f3 / D3s < -4.0, Where f3 is the effective focal length of the third lens, and D3s is the outer diameter of the object side of the third spacer.

10. The optical camera lens according to any one of claims 2 to 4, characterized in that, The plurality of spacers further includes a third spacer located between the third lens and the fourth lens and in contact with the image-side surface of the third lens, and The optical camera lens satisfies: 3.0 < (R³ + R⁴) / d³s < 5.0 Wherein, R3 is the radius of curvature of the object side of the second lens, R4 is the radius of curvature of the image side of the second lens, and d3s is the inner diameter of the object side of the third spacer.

11. The optical camera lens according to any one of claims 1 to 4, characterized in that, The plurality of spacers further includes a third spacer located between the third lens and the fourth lens and in contact with the image-side surface of the third lens, and The optical camera lens satisfies: 1.0<(CT4+T34) / (EP34+CP4)<2.5, Wherein, CT4 is the center thickness of the fourth lens on the optical axis, T34 is the air gap between the third and fourth lenses on the optical axis, EP34 is the gap between the third and fourth spacers, and CP4 is the maximum thickness of the fourth spacer.

12. The optical camera lens according to any one of claims 1 to 4, characterized in that, The plurality of spacers further includes a sixth spacer located between the sixth lens and the seventh lens and in contact with the image-side surface of the sixth lens, and The optical camera lens satisfies: 6.0<(EP56+CT6+CP6) / T56<8.0, Wherein, CT6 is the center thickness of the sixth lens on the optical axis, T56 is the air gap between the fifth and sixth lenses on the optical axis, EP56 is the gap between the fifth and sixth spacers, and CP6 is the maximum thickness of the sixth spacer.

Images