Optical camera lens

Abstract

The present application discloses an optical imaging lens, which includes a lens barrel and an imaging lens group and a spacer element group disposed in the lens barrel; the imaging lens group includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens arranged in sequence from the object side to the image side along the optical axis; the spacer element group includes a first spacer element, and the first spacer element is disposed on the image side surface of the first lens and contacts the image side surface of the first lens; wherein, the number of lenses with optical power in the optical imaging lens is seven; the radius of curvature R1 of the object side surface of the first lens and the outer diameter D0s of the object side end surface of the lens barrel satisfy: -1.6 < R1 / D0s < -0.95; the radius of curvature R2 of the image side surface of the first lens and the inner diameter d1s of the object side surface of the first spacer element satisfy: -1.7 < R2 / d1s ≤ -1.1.

Description

Technical Field

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

[0002] In recent years, with the increasing changes in consumer demands, the requirements for optical camera lenses have gradually become more complex and diverse. In different application scenarios, the performance of optical camera lenses varies.

[0003] Seven-element optical camera lenses have become the mainstream and are widely used in fields such as mobile phones, virtual reality technology, augmented reality technology, and machine vision technology. The front lens has a greater impact on the overall imaging of the seven-element optical camera lens. For example, the first lens is more sensitive. When the first lens, the spacer elements and the lens barrel in its vicinity are not properly arranged, the sensitivity of the optical camera lens will be relatively high, and the MTF performance will be poor, affecting the imaging quality of the optical camera lens. Summary of the Invention

[0004] One aspect of this application provides an optical camera lens, which includes a lens barrel and an imaging lens group and a spacer element group disposed within the lens barrel. The imaging lens group includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens arranged in sequence from the object side to the image side along the optical axis. The spacer element group includes a first spacer element, and the first spacer element is disposed on the image side surface of the first lens and is in contact with the image side surface of the first lens. Among them, the number of lenses with optical power in the optical camera lens is seven. The radius of curvature R1 of the object side surface of the first lens and the outer diameter D0s of the object side end surface of the lens barrel satisfy: -1.6 < R1 / D0s < -0.95; the radius of curvature R2 of the image side surface of the first lens and the inner diameter d1s of the object side surface of the first spacer element satisfy: -1.7 < R2 / d1s ≤ -1.1.

[0005] According to an exemplary embodiment of this application, the central thickness CT1 of the first lens on the optical axis, the spacing distance T12 between the first lens and the second lens on the optical axis, and the distance EP01 along the optical axis between the object side end surface of the lens barrel and the first spacer element satisfy: 0.7 ≤ (CT1 + T12) / EP01 < 1.85.

[0006] According to an exemplary embodiment of this application, the spacer element group further includes a second spacer element, and the second spacer element is disposed on the image side surface of the second lens and is in contact with the image side surface of the second lens. Among them, the distance EP12 along the optical axis between the first spacer element and the second spacer element, the maximum thickness CP1 of the first spacer element, and the central thickness CT2 of the second lens on the optical axis satisfy: 1.6 < (CP1 + EP12) / CT2 < 3.25.

[0007] According to an exemplary embodiment of the present application, the spacer element group further includes a second spacer element, which is disposed on the image side of the second lens and in contact with the image side of the second lens. The distance EP12 between the first spacer element and the second spacer element along the optical axis, the maximum thickness CP2 of the second spacer element, and the effective focal length f2 of the second lens satisfy: -43.65 <f2 / (EP12+CP2)<-26.45。

[0008] According to an exemplary embodiment of the present application, the spacer element group further includes a second spacer element, which is disposed on the image side surface of the second lens and in contact with the image side surface of the second lens. The curvature radius R4 of the image side surface of the second lens, the inner diameter d2s of the object side surface of the second spacer element, and the outer diameter D2s of the object side surface of the second spacer element satisfy: 1.1 <R4 / (D2s-d2s)<3.85。

[0009] According to an exemplary embodiment of the present application, the spacer element group further includes a third spacer element, which is disposed on the image side of the third lens and in contact with the image side of the third lens. The center thickness CT3 of the third lens on the optical axis, the spacing distance T34 between the third lens and the fourth lens on the optical axis, and the distance EP23 between the second spacer element and the third spacer element along the optical axis satisfy: 0.6 <EP23 / (CT3+T34)≤1.3。

[0010] According to an exemplary embodiment of the present application, the spacer element group further includes a fourth spacer element, which is disposed on the image side surface of the fourth lens and contacts the image side surface of the fourth lens. The curvature radius R9 of the object side surface of the fifth lens, the inner diameter d4m of the image side surface of the fourth spacer element, and the outer diameter D4m of the image side surface of the fourth spacer element satisfy: -6.3 <R9 / (D4m-d4m)<-0.85。

[0011] According to an exemplary embodiment of the present application, the spacer element group further includes a fourth spacer element, which is disposed on the image side surface of the fourth lens and in contact with the image side surface of the fourth lens. Wherein, the center thickness CT5 of the fifth lens on the optical axis, the center thickness CT6 of the sixth lens on the optical axis and the maximum thickness CP4 of the fourth spacer element satisfy: 3.6≤(CT5+CT6) / CP4<103.55.

[0012] According to an exemplary embodiment of the present application, the spacer element group further includes a third spacer element and a fourth spacer element, the third spacer element is disposed on the image side surface of the third lens and in contact with the image side surface of the third lens, and the fourth spacer element is disposed on the image side surface of the fourth lens and in contact with the image side surface of the fourth lens. Wherein, the effective focal length f4 of the fourth lens, the spacing distance T34 between the third lens and the fourth lens on the optical axis, the maximum thickness CP3 of the third spacer element and the maximum thickness CP4 of the fourth spacer element satisfy: 6.35<|f4| / (CP3+T34+CP4)<50.5.

[0013] According to an exemplary embodiment of the present application, the spacer element group further includes a third spacer element and a fourth spacer element, the third spacer element is disposed on the image side of the third lens and in contact with the image side of the third lens, and the fourth spacer element is disposed on the image side of the fourth lens and in contact with the image side of the fourth lens. Wherein, the center thickness CT4 of the fourth lens on the optical axis and the distance EP34 between the third spacer element and the fourth spacer element along the optical axis satisfy: 0.5 <CT4 / EP34≤2.7。

[0014] According to an exemplary embodiment of the present application, the spacer element group further includes a third spacer element and a fourth spacer element, the third spacer element is disposed on the image side surface of the third lens and in contact with the image side surface of the third lens, and the fourth spacer element is disposed on the image side surface of the fourth lens and in contact with the image side surface of the fourth lens. Wherein, the curvature radius R7 of the object side surface of the fourth lens, the curvature radius R8 of the image side surface of the fourth lens, the inner diameter d3m of the image side surface of the third spacer element, and the inner diameter d4s of the object side surface of the fourth spacer element satisfy: -1.9<(R8×d4s) / (R7×d3m)≤-0.7.

[0015] According to an exemplary embodiment of the present application, the spacer element group further includes a fifth spacer element, which is disposed on the image side surface of the fifth lens and contacts the image side surface of the fifth lens. The curvature radius R10 of the image side surface of the fifth lens and the outer diameter D5s of the object side surface of the fifth spacer element satisfy: -0.6 <R10 / D5s≤-0.4。

[0016] According to an exemplary embodiment of the present application, the spacer element group further includes a sixth spacer element, which is disposed on the image side surface of the sixth lens and in contact with the image side surface of the sixth lens. The effective focal length f7 of the seventh lens, the center thickness CT7 of the seventh lens on the optical axis, and the maximum thickness CP6 of the sixth spacer element satisfy: 3.3≤|f7| / (CT7+CP6)≤9.5.

[0017] According to an exemplary embodiment of the present application, the spacer element group further includes a sixth spacer element, which is placed on the image side of the sixth lens and in contact with the image side of the sixth lens. Wherein, the radius of curvature R14 of the image side of the seventh lens and the inner diameter d6m of the image side of the sixth spacer element satisfy: 0.45 < |R14 / d6m| < 1.0.

[0018] According to an exemplary embodiment of the present application, the spacer element group further includes a fifth spacer element and a sixth spacer element. The fifth spacer element is placed on the image side of the fifth lens and in contact with the image side of the fifth lens. The sixth spacer element is placed on the image side of the sixth lens and in contact with the image side of the sixth lens. Wherein, the effective focal length f6 of the sixth lens, the distance T67 between the sixth lens and the seventh lens on the optical axis, and the distance EP56 between the fifth spacer element and the sixth spacer element along the optical axis satisfy: 1.1 < f6 / (EP56 + T67) < 1.9.

[0019] According to an exemplary embodiment of the present application, the spacer element group further includes a fifth spacer element and a sixth spacer element. The fifth spacer element is placed on the image side of the fifth lens and in contact with the image side of the fifth lens. The sixth spacer element is placed on the image side of the sixth lens and in contact with the image side of the sixth lens. Wherein, the radius of curvature R11 of the object side of the sixth lens and the outer diameter D5m of the image side of the fifth spacer element satisfy: 0.3 < R11 / D5m ≤ 0.9; the radius of curvature R12 of the image side of the sixth lens and the inner diameter d6s of the object side of the sixth spacer element satisfy: -1.6 < R12 / d6s ≤ -0.7.

[0020] According to an exemplary embodiment of the present application, the first lens has a positive optical power, its object side is concave, and its image side is convex. The second lens has a negative optical power, its object side is convex, and its image side is concave. The third lens has a positive or negative optical power. The fourth lens has a positive or negative optical power. The fifth lens has a negative optical power, its object side is concave, and its image side is convex. The sixth lens has a positive optical power, its object side is convex, and its image side is convex. The seventh lens has a positive or negative optical power, and its object side is concave.

[0021] The optical camera lens provided by the present application adopts seven lenses. By controlling the ratio of the radius of curvature of the object side surface of the first lens to the outer diameter of the object side end surface of the lens barrel and the ratio of the radius of curvature of the image side surface of the first lens to the inner diameter of the object side surface of the first spacing element, the head size of the lens barrel can be constrained, so that the head of the lens barrel has good wall thickness uniformity, and the lens barrel is guaranteed to have good inner diameter roundness and coaxiality, thereby improving the MTF performance yield of the optical camera lens; at the same time, the shape of the first lens can be restricted to ensure that the deflection angle of the edge field of view of the first lens is within a reasonable range, effectively reducing the sensitivity of the optical camera lens; in addition, the refraction path of each field of view light when entering the front end (i.e., the object side end) of the optical camera lens can be controlled to ensure that the illumination of the optical camera lens is uniform and has no dark corners, thereby improving the imaging quality of the optical camera lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings, in which:

[0023] Figure 1 A parameter annotation diagram of an optical camera lens according to an embodiment of the present application is shown;

[0024] Figure 2 A schematic structural diagram of an optical camera lens according to Embodiment 1 of the present application is shown;

[0025] Figure 3 A schematic structural diagram of an optical camera lens according to Embodiment 2 of the present application is shown;

[0026] Figure 4 , Figure 5 , Figure 6 , Figure 7 The axial chromatic aberration curve, the astigmatism curve, the distortion curve and the magnification chromatic aberration curve of the optical camera lens according to Embodiment 1 or 2 of the present application are respectively shown;

[0027] Figure 8 A schematic structural diagram of an optical camera lens according to Embodiment 3 of the present application is shown;

[0028] Fig. 9 A schematic structural diagram of an optical camera lens according to Embodiment 4 of the present application is shown;

[0029] Fig.10 , Fig.11 , Fig.12 , Fig.13 The axial chromatic aberration curve, the astigmatism curve, the distortion curve and the magnification chromatic aberration curve of the optical camera lens according to Embodiment 3 or 4 of the present application are respectively shown;

[0030] Fig.14A schematic structural diagram of an optical camera lens according to Embodiment 5 of the present application is shown;

[0031] Fig.15 A schematic structural diagram of an optical camera lens according to Embodiment 6 of the present application is shown;

[0032] Fig.16 , Fig.17 , Fig.18 , Fig.19 The axial chromatic aberration curve, the astigmatism curve, the distortion curve and the magnification chromatic aberration curve of the optical camera lens according to Embodiment 5 or 6 of the present application are respectively shown;

[0033] Fig. 20 The Modulation Transfer Function (MTF) curve of the optical camera lens when R1 / D0s=-1.58, R2 / d1s=-1.65 is shown;

[0034] Fig.21 The relative illumination curve when the optical camera lens satisfies R1 / D0s=-1.58 and R2 / d1s=-1.65 is shown;

[0035] Fig. 22 The modulation transfer function curve when the optical camera lens satisfies R1 / D0s=-1.7 and R2 / d1s=-1.8 is shown;

[0036] Fig.23 The relative illumination curve when the optical camera lens satisfies R1 / D0s=-1.7 and R2 / d1s=-1.8 is shown;

[0037] Fig.24 The modulation transfer function curve when the optical camera lens satisfies R1 / D0s=-0.8 and R2 / d1s=-1.0 is shown;

[0038] Fig.25 The relative illumination curve when the optical camera lens satisfies R1 / D0s=-0.8 and R2 / d1s=-1.0 is shown. DETAILED DESCRIPTION

[0039] In order to better understand the present application, a more detailed description will be made of various aspects of the present application with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and do not limit the scope of the present application in any way. Throughout the specification, the same figure numerals refer to the same elements.

[0040] It should be noted that in this specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teaching of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0041] In the 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 shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the shapes of the spherical or aspherical surfaces shown in the drawings. The drawings are for illustration only and are not drawn strictly to scale.

[0042] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface 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 position of the concave surface 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 object is called the object side of the lens, and the surface of each lens closest to the image plane is called the image side of the lens.

[0043] The optical camera lens of the exemplary embodiment of the present application can be simulated by software and / or tools such as ZEMAX and CODEV. Alternatively, the optical camera lens can be simulated by CODEV software. In the process of simulation using the above software and / or tools, the surface shape of each lens can be appropriately adjusted according to the surface shape model of the software and / or tool used.

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

[0045] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this article have the same meaning as commonly understood by ordinary technicians in the field to which this application belongs. It should also be understood that terms (such as terms defined in commonly used dictionaries) should be interpreted as having the same meaning as their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in this article.

[0046] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0047] The first aspect of the present application provides such an optical camera lens, which may include an imaging lens group, which may include a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens arranged in sequence from the object side to the image side along the optical axis. Among the first lens to the seventh lens, any two adjacent lenses may have a spacing distance, such as an air spacing.

[0048] In an exemplary embodiment, the first lens may have positive optical power. The second lens may have negative optical power. The third lens may have positive optical power or negative optical power. The fourth lens may have positive optical power or negative optical power. The fifth lens may have negative optical power. The sixth lens may have positive optical power. The seventh lens may have positive optical power or negative optical power. The number of lenses having optical power of the optical camera lens may be seven.

[0049] In example embodiments, the object-side surface of the first lens may be a concave surface, and the image-side surface may be a convex surface.

[0050] In example embodiments, the object-side surface of the second lens may be a convex surface, and the image-side surface may be a concave surface.

[0051] In example embodiments, the object-side surface of the third lens may be a convex surface or a concave surface, and the image-side surface may be a convex surface or a concave surface.

[0052] In exemplary embodiments, the object-side surface of the fourth lens may be a convex surface or a concave surface, and the image-side surface may be a convex surface or a concave surface.

[0053] In example embodiments, the object-side surface of the fifth lens may be a concave surface, and the image-side surface may be a convex surface.

[0054] In example embodiments, the object-side surface of the sixth lens may be a convex surface, and the image-side surface may be a convex surface.

[0055] In example embodiments, the object-side surface of the seventh lens may be a concave surface, and the image-side surface may be a convex surface or a concave surface.

[0056] In an exemplary embodiment, the optical camera lens may further include a stop. The stop may be disposed between the first lens and the second lens. Alternatively, the stop may be disposed between the second lens and the third lens.

[0057] In an exemplary embodiment, the optical camera lens may further include a spacer element group, and the spacer element group may include one or more of a first spacer element, a second spacer element, a third spacer element, a fourth spacer element, a fifth spacer element, and a sixth spacer element. Reasonable use of the spacer element can effectively avoid stray light risks, reduce interference with image quality, and thus improve the imaging quality of the optical camera lens.

[0058] In an exemplary embodiment, the optical imaging lens may further include a lens barrel, and the imaging lens group and the spacer element group are disposed within the lens barrel. The lens barrel may include an object-side end face, an image-side end face, an outer ring face, and an inner ring face. Among them, the end face of the lens barrel closest to the object side is the object-side end face of the lens barrel, and the end face of the lens barrel closest to the image side is the image-side end face of the lens barrel; in a direction perpendicular to the optical axis, the outermost surface of the lens barrel away from the optical axis is the outer ring face, and the innermost surface of the lens barrel closest to the optical axis is the inner ring face.

[0059] In an exemplary embodiment, the outer peripheral surface of at least one lens in the imaging lens group may have a trimmed portion and an untrimmed portion, and the outer diameter of the trimmed portion of the lens may be smaller than the outer diameter of the untrimmed portion of the lens. When the outer peripheral surface of the lens has a trimmed portion, the outer diameter of the lens generally refers to the outer diameter of the untrimmed portion of the lens. For example, the outer diameter of the object side surface of the lens refers to the outer diameter of the part of the untrimmed portion of the lens closest to the object side, and the outer diameter of the image side surface of the lens refers to the outer diameter of the part of the untrimmed portion of the lens closest to the image side.

[0060] In an exemplary embodiment, the outer peripheral surface of at least one spacer element in the spacer element group may have a trimmed portion and an untrimmed portion, and the outer diameter of the trimmed portion of the spacer element may be smaller than the outer diameter of the untrimmed portion of the spacer element. When the outer peripheral surface of the spacer element has a trimmed portion, the outer diameter of the spacer element generally refers to the outer diameter of the untrimmed portion of the spacer element. For example, the outer diameter of the object side surface of the spacer element refers to the outer diameter of the part of the untrimmed portion of the spacer element closest to the object side, and the outer diameter of the image side surface of the spacer element refers to the outer diameter of the part of the untrimmed portion of the spacer element closest to the image side.

[0061] In an exemplary embodiment, the spacer element group may include a first spacer element, where the first spacer element may be disposed on the image side surface of the first lens and at least partially in contact with the image side surface of the first lens. The radius of curvature R1 of the object side surface of the first lens and the outer diameter D0s of the object-side end face of the lens barrel may satisfy: -1.6 < R1 / D0s < -0.95; the radius of curvature R2 of the image side surface of the first lens and the inner diameter d1s of the object side surface of the first spacer element may satisfy: -1.7 < R2 / d1s ≤ -1.1. By controlling the ratio of the radius of curvature of the object side surface of the first lens to the outer diameter of the object-side end face of the lens barrel and the ratio of the radius of curvature of the image side surface of the first lens to the inner diameter of the object side surface of the first spacer element, the head size of the lens barrel can be restricted, so that the lens barrel head has good wall thickness uniformity, and ensure that the lens barrel has good inner diameter roundness and coaxiality, improving the MTF performance yield of the optical imaging lens; at the same time, the shape of the first lens can be restricted to ensure that the deflection angle of the marginal field of view in the first lens is within a reasonable range, effectively reducing the sensitivity of the optical imaging lens. In addition, the refraction path of the light rays entering the front end (i.e., the object side end) of the optical imaging lens in each field of view can be controlled to ensure that the illumination of the optical imaging lens is uniform without vignetting, improving the imaging quality of the optical imaging lens.

[0062] Fig. 20 and Fig.21 respectively show the modulation transfer function curve and relative illumination curve of the optical camera lens when R1 / D0s = -1.58 and R2 / d1s = -1.65. Fig. 22 and Fig.23 respectively show the modulation transfer function curve and relative illumination curve of the optical camera lens when R1 / D0s = -1.7 and R2 / d1s = -1.8. Fig.24 and Fig.25 respectively show the modulation transfer function curve and relative illumination curve of the optical camera lens when R1 / D0s = -0.8 and R2 / d1s = -1.0. Among them, Fig.21 、 Fig.23 and Fig.25 show the relative illumination as RI_MTF. RI_MTF can be, for example, the RI obtained incidentally when calculating MTF, which does not consider surface reflection.

[0063] Combined with Fig. 22 、 Fig.23 、 Fig.24 and Fig.25 it can be known that when R1 / D0s = -1.7 and R2 / d1s = -1.8, the MTF value of the optical camera lens drops too much, the concentration of different field-of-view curves is poor, and the relative illumination curve is not smooth; when R1 / D0s = -0.8 and R2 / d1s = -1.0, the MTF value of the optical camera lens drops too much, the concentration of different field-of-view curves is poor, and the relative illumination curve is not smooth. However, from Fig. 20 and Fig.21 it can be seen that when R1 / D0s = -1.58 and R2 / d1s = -1.65, the MTF value of the optical camera lens drops less, the different field-of-view curves are relatively concentrated, and the relative illumination curve is smooth. It can be seen that by controlling the optical camera lens to satisfy "-1.6 < R1 / D0s < -0.95, -1.7 < R2 / d1s ≤ -1.1", the MTF performance yield of the optical camera lens can be improved, and it can be ensured that the optical camera lens has uniform illumination without vignetting, and the imaging quality of the optical camera lens can be improved.

[0064] In an exemplary embodiment, the spacer element group may further include a first spacer element, wherein the first spacer element may be placed on the image side of the first lens and at least partially contact the image side of the first lens. The center thickness CT1 of the first lens on the optical axis, the spacing distance T12 between the first lens and the second lens on the optical axis, and the distance EP01 between the object side end face of the lens barrel and the first spacer element along the optical axis may satisfy: 0.7≤(CT1+T12) / EP01<1.85. By controlling the above conditional expression, the wall thickness of the object side end of the lens barrel in the direction of lens compression can be constrained within a reasonable range, ensuring that the object side end of the lens barrel has good strength, reducing the deformation amount of the object side end of the lens barrel during the assembly process, and improving the assembly stability of the lens barrel; at the same time, the edge thickness of the first lens can also be limited to ensure that the first lens has good formability and stability, for example, the first lens has good moldability and stability, and improves the yield of the first lens.

[0065] In an exemplary embodiment, the spacer element group may also include a first spacer element and a second spacer element, wherein the first spacer element may be placed on the image side surface of the first lens and at least partially contact the image side surface of the first lens, and the second spacer element may be placed on the image side surface of the second lens and at least partially contact the image side surface of the second lens. The distance EP12 between the first spacer element and the second spacer element along the optical axis, the maximum thickness CP1 of the first spacer element, and the center thickness CT2 of the second lens on the optical axis may satisfy: 1.6<(CP1+EP12) / CT2<3.25. By controlling the above conditional formula, the maximum thickness of the first spacer element, the edge thickness of the second lens, and the center thickness of the second lens can be constrained, so that the second lens and the first spacer element have good thickness uniformity, improve the molding stability and dimensional accuracy of the second lens and the first spacer element, and thus help to ensure the stability of the spacing distance between the first lens and the second lens, and improve the performance yield of the optical camera lens.

[0066] In an exemplary embodiment, the spacer element group may further include a first spacer element and a second spacer element. Among them, the first spacer element may be disposed on the image side of the first lens and at least partially in contact with the image side of the first lens, and the second spacer element may be disposed on the image side of the second lens and at least partially in contact with the image side of the second lens. The distance EP12 between the first spacer element and the second spacer element along the optical axis, the maximum thickness CP2 of the second spacer element, and the effective focal length f2 of the second lens may satisfy: -43.65 < f2 / (EP12 + CP2) < -26.45. By controlling the above conditional expression, the effective focal length of the second lens can be constrained within a reasonable range, the astigmatism of the optical imaging lens can be effectively controlled, and the deflection angle of the second lens for light can be ensured to be appropriate, improving the imaging quality of the off-axis field of view of the optical imaging lens; at the same time, the edge thickness of the second lens can be limited, and the structural strength of the flange portion (i.e., the non-effective diameter portion) of the second lens can be improved.

[0067] In an exemplary embodiment, the spacer element group may further include a second spacer element. Among them, the second spacer element may be disposed on the image side of the second lens and at least partially in contact with the image side of the second lens. The radius of curvature R4 of the image side of the second lens, the inner diameter d2s of the object side of the second spacer element, and the outer diameter D2s of the object side of the second spacer element may satisfy: 1.1 < R4 / (D2s - d2s) < 3.85. By controlling the above conditional expression, the radius of curvature of the image side of the second lens and the inner and outer diameters of the object side of the second spacer element can be constrained, effectively reducing the stray light intensity of the internal reflected stray light of the second lens, reducing the stray light risk of the optical imaging lens, and improving the imaging quality of the optical imaging lens.

[0068] In an exemplary embodiment, the spacer element group may further include a second spacer element and a third spacer element. Among them, the second spacer element may be disposed on the image side of the second lens and at least partially in contact with the image side of the second lens, and the third spacer element may be disposed on the image side of the third lens and at least partially in contact with the image side of the third lens. The central thickness CT3 of the third lens on the optical axis, the spacing distance T34 between the third lens and the fourth lens on the optical axis, and the distance EP23 between the second spacer element and the third spacer element along the optical axis may satisfy: 0.6 < EP23 / (CT3 + T34) ≤ 1.3. EP23 affects the edge thickness of the third lens, CT3 affects the central thickness of the third lens, and T34 affects the sagitta of the image side of the third lens. By controlling the above conditional expression, the edge thickness, central thickness, and sagitta of the image side of the third lens can be constrained, thereby realizing the control of the overall shape of the third lens, ensuring that the third lens has good thickness uniformity and shape rationality, improving the forming stability and demolding stability of the third lens, and ultimately being beneficial to the stability of the surface shape data of the third lens and improving the MTF performance yield of the optical imaging lens.

[0069] In an exemplary embodiment, the spacer element group may further include a fourth spacer element, where the fourth spacer element may be disposed on the image side of the fourth lens and at least partially in contact with the image side of the fourth lens. The radius of curvature R9 of the object side of the fifth lens, the inner diameter d4m of the image side of the fourth spacer element, and the outer diameter D4m of the image side of the fourth spacer element may satisfy: -6.3 < R9 / (D4m - d4m) < -0.85. By controlling the above conditional expression, the inner diameter of the image side of the fourth spacer element can be restricted, so that the fourth spacer element effectively intercepts stray light entering the fifth lens; at the same time, the outer diameter of the image side of the fourth spacer element and the radius of curvature of the object side of the fifth lens can also be restricted to ensure the overall outer diameter size of the fifth lens, and increase the number of reflections of stray light by the flange portion (i.e., the non-effective diameter portion) of the fifth lens, reduce the stray light generated by the fifth lens, and improve the imaging quality of the optical imaging lens.

[0070] In an exemplary embodiment, the spacer element group may further include a fourth spacer element, where the fourth spacer element may be disposed on the image side of the fourth lens and at least partially in contact with the image side of the fourth lens. The central thickness CT5 of the fifth lens on the optical axis, the central thickness CT6 of the sixth lens on the optical axis, and the maximum thickness CP4 of the fourth spacer element may satisfy: 3.6 ≤ (CT5 + CT6) / CP4 < 103.55. By controlling the above conditional expression, the central thickness of the fifth lens, the central thickness of the sixth lens, and the maximum thickness of the fourth spacer element can be restricted. While ensuring good structural strength of the fifth lens and the sixth lens, the fourth spacer element is used to enhance the assembly stability of the optical imaging lens, reduce the impact of assembly on the performance of the optical imaging lens, and improve the yield of the optical imaging lens.

[0071] In an exemplary embodiment, the spacer element group may further include a third spacer element and a fourth spacer element, where the third spacer element may be disposed on the image side of the third lens and at least partially in contact with the image side of the third lens, and the fourth spacer element may be disposed on the image side of the fourth lens and at least partially in contact with the image side of the fourth lens. The effective focal length f4 of the fourth lens, the spacing distance T34 between the third lens and the fourth lens on the optical axis, the maximum thickness CP3 of the third spacer element, and the maximum thickness CP4 of the fourth spacer element may satisfy: 6.35 < |f4| / (CP3 + T34 + CP4) < 50.5. By controlling the above conditional expression, the effective focal length of the fourth lens can be restricted, and the maximum thickness of the third spacer element, the maximum thickness of the fourth spacer element, and the spacing distance between the third lens and the fourth lens can be reasonably allocated, which is beneficial to ensuring that the maximum thicknesses of the third spacer element and the fourth spacer element are at a reasonable level, improving the processability and yield of the third spacer element and the fourth spacer element, and enhancing the assembly stability of the optical imaging lens.

[0072] In an exemplary embodiment, the spacer element group may further include a third spacer element and a fourth spacer element. The third spacer element may be disposed on the image side of the third lens and at least partially in contact with the image side of the third lens. The fourth spacer element may be disposed on the image side of the fourth lens and at least partially in contact with the image side of the fourth lens. The central thickness CT4 of the fourth lens on the optical axis and the distance EP34 between the third spacer element and the fourth spacer element along the optical axis may satisfy: 0.5 < CT4 / EP34 ≤ 2.7. By controlling the above conditional expression, the central thickness and the edge thickness of the fourth lens can be constrained, ensuring that the thickness ratio of the fourth lens is within a reasonable range, significantly reducing the risk of forming welding marks in the fourth lens, improving the molding appearance of the fourth lens, reducing stray light in the optical imaging lens, and enhancing the imaging quality of the optical imaging lens.

[0073] In an exemplary embodiment, the spacer element group may further include a third spacer element and a fourth spacer element. The third spacer element may be disposed on the image side of the third lens and at least partially in contact with the image side of the third lens. The fourth spacer element may be disposed on the image side of the fourth lens and at least partially in contact with the image side of the fourth lens. The curvature radius R7 of the object side of the fourth lens, the curvature radius R8 of the image side of the fourth lens, the inner diameter d3m of the image side of the third spacer element, and the inner diameter d4s of the object side of the fourth spacer element may satisfy: -1.9 < (R8 × d4s) / (R7 × d3m) ≤ -0.7. By controlling the above conditional expression, the curvature radii of the object side and the image side of the fourth lens and the inner diameters of the spacer elements on both sides of the fourth lens can be constrained, reducing the internal reflection stray light and the transmitted stray light of the fourth lens, improving the image purity of the optical imaging lens, reducing abnormal flare, and enhancing the imaging quality of the optical imaging lens.

[0074] In an exemplary embodiment, the spacer element group may include a fifth spacer element. The fifth spacer element may be disposed on the image side of the fifth lens and at least partially in contact with the image side of the fifth lens. The curvature radius R10 of the image side of the fifth lens and the outer diameter D5s of the object side of the fifth spacer element may satisfy: -0.6 < R10 / D5s ≤ -0.4. Reasonably configuring the ratio of the curvature radius of the image side of the fifth lens to the outer diameter of the object side of the fifth spacer element can enable light to pass through the fifth lens along a predetermined path and ensure that the outer diameter of the object side of the fifth spacer element is within a certain range, so as to assist in bearing when the fifth lens is pressed by the inner wall surface of the lens barrel, reducing the assembly deformation of the fifth lens, and enhancing the assembly stability and the assembly yield rate of the optical imaging lens.

[0075] In an exemplary embodiment, the spacer element group may include a sixth spacer element, wherein the sixth spacer element may be placed on the image side of the sixth lens and at least partially contact the image side of the sixth lens. The effective focal length f7 of the seventh lens, the center thickness CT7 of the seventh lens on the optical axis and the maximum thickness CP6 of the sixth spacer element may satisfy: 3.3≤|f7| / (CT7+CP6)≤9.5. By controlling the above conditional expression, the effective focal length of the seventh lens and the center thickness of the seventh lens on the optical axis can be constrained, the molding feasibility of the seventh lens can be improved, and the aberration level of the optical camera lens can be optimized; at the same time, the maximum thickness of the sixth spacer element can be limited to ensure that the sixth spacer element has good strength and improve the assembly stability and assembly yield of the seventh lens.

[0076] In an exemplary embodiment, the spacer element group may include a sixth spacer element, wherein the sixth spacer element may be placed on the image side surface of the sixth lens and at least partially contact the image side surface of the sixth lens. The radius of curvature R14 of the image side surface of the seventh lens and the inner diameter d6m of the image side surface of the sixth spacer element may satisfy: 0.45<|R14 / d6m|<1.0. Reasonable configuration of the absolute value of the ratio of the radius of curvature of the image side surface of the seventh lens to the inner diameter of the image side surface of the sixth spacer element may constrain the radius of curvature of the image side surface of the seventh lens, reduce the surface PV value of the image side surface of the seventh lens, improve the surface accuracy and surface stability of the image side surface of the seventh lens after injection molding, and avoid problems such as surface recurvature on the image side surface of the seventh lens; at the same time, the inner diameter of the image side surface of the sixth spacer element may be limited, which is beneficial for the sixth spacer element to intercept part of the stray light entering the seventh lens, reduce the stray light of the optical camera lens, and improve the imaging quality of the optical camera lens.

[0077] In an exemplary embodiment, the spacer element group may include a fifth spacer element and a sixth spacer element. The fifth spacer element may be disposed on the image side of the fifth lens and at least partially in contact with the image side of the fifth lens. The sixth spacer element may be disposed on the image side of the sixth lens and at least partially in contact with the image side of the sixth lens. The effective focal length f6 of the sixth lens, the axial distance T67 between the sixth lens and the seventh lens, and the axial distance EP56 between the fifth spacer element and the sixth spacer element may satisfy: 1.1 < f6 / (EP56 + T67) < 1.9. The sixth lens and the seventh lens are relatively sensitive. For example, a relatively large axial distance between the sixth lens and the seventh lens may result in a relatively large difference in the apertures of the sixth lens and the seventh lens, thereby affecting the assembly stability and assembly yield of the sixth lens and the seventh lens. By controlling the relationship between the effective focal length of the sixth lens, the axial distance between the sixth lens and the seventh lens on the optical axis, and the axial distance between the fifth spacer element and the sixth spacer element on the optical axis, when the axial distance between the sixth lens and the seventh lens is relatively large, the edge thicknesses of the sixth lens and the seventh lens and the maximum thickness of the sixth spacer element can be constrained, improving the assembly stability and assembly yield of the sixth lens and the seventh lens. At the same time, it is also beneficial to reduce the PV value of the surface profiles of the object sides of the sixth lens and the seventh lens, improving the MTF performance yield of the optical imaging lens. It should be noted that the PV value may be the difference between the peak and the valley of the surface.

[0078] In an exemplary embodiment, the spacer element group may include a fifth spacer element and a sixth spacer element. The fifth spacer element may be disposed on the image side of the fifth lens and at least partially in contact with the image side of the fifth lens. The sixth spacer element may be disposed on the image side of the sixth lens and at least partially in contact with the image side of the sixth lens. The curvature radius R11 of the object side of the sixth lens and the outer diameter D5m of the image side of the fifth spacer element may satisfy: 0.3 < R11 / D5m ≤ 0.9; the curvature radius R12 of the image side of the sixth lens and the inner diameter d6s of the object side of the sixth spacer element may satisfy: -1.6 < R12 / d6s ≤ -0.7. Reasonably configuring the ratio of the curvature radius of the object side of the sixth lens to the outer diameter of the image side of the fifth spacer element and the ratio of the curvature radius of the image side of the sixth lens to the inner diameter of the object side of the sixth spacer element can constrain the curvature radii of the object side and the image side of the sixth lens, making the refraction directions of the light rays in each field of view appropriate, thereby achieving a preset image height. At the same time, the inner diameter of the object side of the sixth spacer element can be restricted, effectively reducing the stray light of the sixth lens and improving the imaging quality of the optical imaging lens.

[0079] According to the above-mentioned embodiment of the present application, the optical camera lens can use seven lenses and at least one spacer element. By reasonably allocating the parameters of each lens, each spacer element and the lens barrel, the sensitivity of the optical camera lens can be reduced, the stray light of the optical camera lens can be reduced, and the imaging quality, assembly stability and assembly yield of the optical camera lens can be improved.

[0080] In an embodiment of the present application, at least one of the surfaces of each lens in the first lens to the seventh lens is an aspherical surface. The characteristic of an aspherical lens is that the curvature changes continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better curvature radius characteristic, and has the advantages of improving distortion aberration and improving astigmatism aberration. After adopting an aspherical lens, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, the object side surface and the image side surface of each lens in the first lens to the seventh lens are both aspherical surfaces.

[0081] Those skilled in the art should understand that, without departing from the technical solution claimed in the present application, the number of lenses and spacer elements constituting the optical camera lens can be changed to obtain the various results and advantages described in this specification.

[0082] Specific embodiments of the optical camera lens applicable to the above-mentioned embodiments will be further described below with reference to the accompanying drawings. Example 1

[0083] The following reference Figure 2 An optical imaging lens according to Embodiment 1 of the present application is described.

[0084] like Figure 2 As shown, the optical camera lens may include a lens barrel P0 and an imaging lens group and a spacer element group disposed in the lens barrel P0. The imaging lens group may include 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 in order from the object side to the image side along the optical axis. A stop STO (not shown) may be disposed between the first lens E1 and the second lens E2.

[0085] The first lens E1 has positive power, and its object side surface S1 is concave, and its image side surface S2 is convex. The second lens E2 has negative power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has negative power, and its object side surface S5 is concave, and its image side surface S6 is convex. The fourth lens E4 has positive power, and its object side surface S7 is convex, and its image side surface S8 is convex. The fifth lens E5 has negative power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has positive power, and its object side surface S11 is convex, and its image side surface S12 is convex. The seventh lens E7 has positive power, and its object side surface S13 is concave, and its image side surface S14 is convex. In the example, the image side of the seventh lens E7 may also be provided with an optical element, and the optical element may be, for example, a filter, and the optical element has an object side surface S15 (not shown) and an image side surface S16 (not shown). Light from an object passes through the surfaces S1 to S16 in sequence and is finally imaged on an imaging surface S17 (not shown).

[0086] The spacer element group may include a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4, a fifth spacer element P5 and a sixth spacer element P6. The spacer elements can block excess light in the imaging process from entering the next lens, while allowing the lens to better support the lens barrel P0, thereby enhancing the structural stability of the optical camera lens.

[0087] Table 1 shows basic parameters of the optical camera lens of Example 1, wherein the units of the curvature radius, thickness / distance, and focal length are all millimeters (mm).

[0088] Table 1

[0089]

[0090] In this embodiment, the object side surface and the image side surface of any lens among the first lens E1 to the seventh lens E7 are both aspherical surfaces, and the surface shape of each aspherical surface can be defined by but not limited to the following aspherical surface formula:

[0091] (1)

[0092] Wherein, x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at a height of h along the optical axis; c is the paraxial curvature of the aspheric 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 cone coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. Table 2 shows the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28 and A30 that can be used for each aspheric surface S1-S14 in Example 1.

[0093] Table 2

[0094] Example 2

[0095] The following reference Figure 3 An optical imaging lens according to Embodiment 2 of the present application is described.

[0096] like Figure 3 As shown, the optical camera lens may include a lens barrel P0 and an imaging lens group and a spacer element group disposed in the lens barrel P0. The imaging lens group may include 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 in sequence from the object side to the image side along the optical axis. A stop STO (not shown) may be disposed between the first lens E1 and the second lens E2. An optical element may also be disposed on the image side of the seventh lens E7, and the optical element may be, for example, a filter. The spacer element group may include a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4, a fifth spacer element P5, and a sixth spacer element P6.

[0097] The structure of the imaging lens group of this embodiment is the same as that of the imaging lens group of Embodiment 1, that is, the basic parameter table of the optical camera lens of this embodiment is the same as Table 1, and the aspheric coefficient table is the same as Table 2. The difference between this embodiment and Embodiment 1 is that the structure size of at least part of the elements in the lens barrel P0 and the spacer element group is different.

[0098] Figure 4 The axial chromatic aberration curve of the optical camera lens of Example 1 or 2 is shown, which indicates the deviation of the focusing point of light of different wavelengths after passing through the optical camera lens. Figure 5 The astigmatism curve of the optical camera lens of Example 1 or 2 is shown, which represents the meridional image plane curvature and sagittal image plane curvature corresponding to different field angles. Figure 6 The distortion curve of the optical camera lens of Example 1 or 2 is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Figure 7 The magnification chromatic aberration curve of the optical camera lens of Example 1 or 2 is shown, which indicates the deviation of different image heights on the imaging surface after the light passes through the lens. Figure 4 , Figure 5 , Figure 6 and Figure 7 It can be seen that the optical camera lens of Example 1 or 2 can achieve good imaging quality. Example 3

[0099] The following reference Figure 8 An optical imaging lens according to Embodiment 3 of the present application is described.

[0100] like Figure 8As shown, the optical camera lens may include a lens barrel P0 and an imaging lens group and a spacer element group disposed in the lens barrel P0. The imaging lens group may include 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 in order from the object side to the image side along the optical axis. A stop STO (not shown) may be disposed between the first lens E1 and the second lens E2.

[0101] The first lens E1 has positive power, and its object side surface S1 is concave, and its image side surface S2 is convex. The second lens E2 has negative power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive power, and its object side surface S5 is convex, and its image side surface S6 is convex. The fourth lens E4 has negative power, and its object side surface S7 is concave, and its image side surface S8 is concave. The fifth lens E5 has negative power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has positive power, and its object side surface S11 is convex, and its image side surface S12 is convex. The seventh lens E7 has negative power, and its object side surface S13 is concave, and its image side surface S14 is concave. In the example, the image side of the seventh lens E7 may also be provided with an optical element, and the optical element may be, for example, a filter, and the optical element has an object side surface S15 (not shown) and an image side surface S16 (not shown). Light from an object passes through the surfaces S1 to S16 in sequence and is finally imaged on an imaging surface S17 (not shown).

[0102] The spacer element group may include a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4, a fifth spacer element P5 and a sixth spacer element P6. The spacer elements can block excess light in the imaging process from entering the next lens, while allowing the lens to better support the lens barrel P0, thereby enhancing the structural stability of the optical camera lens.

[0103] Table 3 shows the basic parameters of the optical camera lens of Example 3, wherein the units of the curvature radius, thickness / distance, and focal length are all millimeters (mm).

[0104] Table 3

[0105]

[0106] In this embodiment, the object side surface and the image side surface of any lens from the first lens E1 to the seventh lens E7 are aspherical surfaces. Table 4 shows the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28 and A30 that can be used for each aspherical surface S1-S14 in Example 3.

[0107] Table 4

[0108] Example 4

[0109] The following reference Fig. 9 An optical imaging lens according to Embodiment 4 of the present application is described.

[0110] like Fig. 9 As shown, the optical camera lens may include a lens barrel P0 and an imaging lens group and a spacer element group disposed in the lens barrel P0. The imaging lens group may include 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 in sequence from the object side to the image side along the optical axis. A stop STO (not shown) may be disposed between the first lens E1 and the second lens E2. An optical element may also be disposed on the image side of the seventh lens E7, and the optical element may be, for example, a filter. The spacer element group may include a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4, a fifth spacer element P5, and a sixth spacer element P6.

[0111] The structure of the imaging lens group of this embodiment is the same as that of the imaging lens group of Embodiment 3, that is, the basic parameter table of the optical camera lens of this embodiment is the same as Table 3, and the aspheric coefficient table is the same as Table 4. The difference between this embodiment and Embodiment 3 is that the structure size of at least part of the elements in the lens barrel P0 and the spacer element group is different.

[0112] Fig.10 The axial chromatic aberration curve of the optical camera lens of Example 3 or 4 is shown, which indicates the deviation of the focusing point of light of different wavelengths after passing through the optical camera lens. Fig.11 The astigmatism curve of the optical camera lens of Example 3 or 4 is shown, which represents the meridional image plane curvature and sagittal image plane curvature corresponding to different field angles. Fig.12 The distortion curve of the optical camera lens of Example 3 or 4 is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Fig.13 The magnification chromatic aberration curve of the optical camera lens of Example 3 or 4 is shown, which indicates the deviation of different image heights on the imaging surface after the light passes through the lens. Fig.10 , Fig.11 , Fig.12 and Fig.13 It can be seen that the optical camera lens of Example 3 or 4 can achieve good imaging quality. Example 5

[0113] The following reference Fig.14 An optical imaging lens according to Embodiment 5 of the present application is described.

[0114] like Fig.14As shown, the optical camera lens may include a lens barrel P0 and an imaging lens group and a spacer element group disposed in the lens barrel P0. The imaging lens group may include 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 in order from the object side to the image side along the optical axis. A stop STO (not shown) may be disposed between the second lens E2 and the third lens E3.

[0115] The first lens E1 has positive power, and its object side surface S1 is concave, and its image side surface S2 is convex. The second lens E2 has negative power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has negative power, and its object side surface S5 is concave, and its image side surface S6 is concave. The fourth lens E4 has positive power, and its object side surface S7 is convex, and its image side surface S8 is convex. The fifth lens E5 has negative power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has positive power, and its object side surface S11 is convex, and its image side surface S12 is convex. The seventh lens E7 has negative power, and its object side surface S13 is concave, and its image side surface S14 is convex. In the example, the image side of the seventh lens E7 may also be provided with an optical element, and the optical element may be, for example, a filter, and the optical element has an object side surface S15 (not shown) and an image side surface S16 (not shown). Light from an object passes through the surfaces S1 to S16 in sequence and is finally imaged on an imaging surface S17 (not shown).

[0116] The spacer element group may include a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4, a fifth spacer element P5 and a sixth spacer element P6. The spacer elements can block excess light in the imaging process from entering the next lens, while allowing the lens to better support the lens barrel P0, thereby enhancing the structural stability of the optical camera lens.

[0117] Table 5 shows the basic parameters of the optical camera lens of Example 5, wherein the units of the curvature radius, thickness / distance, and focal length are all millimeters (mm).

[0118] Table 5

[0119]

[0120] In this embodiment, the object side surface and the image side surface of any lens from the first lens E1 to the seventh lens E7 are aspherical surfaces. Table 6 shows the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28 and A30 that can be used for the aspherical surfaces S1-S14 in Example 5.

[0121] Table 6

[0122] Example 6

[0123] The following reference Fig.15 An optical imaging lens according to Embodiment 6 of the present application is described.

[0124] like Fig.15 As shown, the optical camera lens may include a lens barrel P0 and an imaging lens group and a spacer element group disposed in the lens barrel P0. The imaging lens group may include 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 in sequence from the object side to the image side along the optical axis. A stop STO (not shown) may be disposed between the second lens E2 and the third lens E3. An optical element may also be disposed on the image side of the seventh lens E7, and the optical element may be, for example, a filter. The spacer element group may include a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4, a fifth spacer element P5, and a sixth spacer element P6.

[0125] The structure of the imaging lens group of this embodiment is the same as that of the imaging lens group of Embodiment 5, that is, the basic parameter table of the optical camera lens of this embodiment is the same as Table 5, and the aspheric coefficient table is the same as Table 6. The difference between this embodiment and Embodiment 5 is that the structure size of at least part of the elements in the lens barrel P0 and the spacer element group is different.

[0126] Fig.16 The axial chromatic aberration curve of the optical camera lens of Example 5 or 6 is shown, which indicates the deviation of the focusing point of light of different wavelengths after passing through the optical camera lens. Fig.17 The astigmatism curve of the optical camera lens of Example 5 or 6 is shown, which represents the meridional image plane curvature and sagittal image plane curvature corresponding to different field angles. Fig.18 The distortion curve of the optical camera lens of Example 5 or 6 is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Fig.19 The magnification chromatic aberration curve of the optical camera lens of Example 5 or 6 is shown, which indicates the deviation of different image heights on the imaging surface after the light passes through the lens. Fig.16 , Fig.17 , Fig.18 and Fig.19 It can be seen that the optical camera lens of Example 5 or 6 can achieve good imaging quality.

[0127] Table 7 shows the values ​​of parameters such as d1s, d2s, D2s, d3m, d4s, d4m, D4m, D5s, D5m, d6s, d6m, D0s, EP01, CP1, EP12, CP2, EP23, CP3, EP34, CP4, EP56 and CP6 in each of Examples 1 to 6. The above parameters can be calculated according to Figure 1 The units of the parameters listed in Table 7 are all mm.

[0128] Table 7

[0129]

[0130] Table 8 shows the values ​​of the conditional expressions of each of Examples 1 to 6.

[0131] Table 8

[0132]

[0133] The present application also provides an imaging device, whose electronic photosensitive element can be a photosensitive coupled device (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device can be an independent imaging device such as a digital camera, or an imaging module integrated in a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical camera lens described above.

[0134] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. An optical camera lens, characterized in that: include: An imaging lens group, comprising a first lens with positive power, a second lens with negative power, a third lens, a fourth lens, a fifth lens with negative power, a sixth lens with positive power, and a seventh lens arranged in sequence from the object side to the image side along the optical axis; a spacer element group, comprising a first spacer element, wherein the first spacer element is disposed on the image side surface of the first lens and in contact with the image side surface of the first lens; as well as a lens barrel, wherein the imaging lens group and the spacer element group are disposed in the lens barrel; Wherein, the optical camera lens has seven lenses with optical focal length; The curvature radius R1 of the object side surface of the first lens and the outer diameter D0s of the object side end surface of the lens barrel satisfy: -1.6 <R1 / D0s<-0.95; The curvature radius R2 of the image side surface of the first lens and the inner diameter d1s of the object side surface of the first spacer element satisfy: -1.7 <R2 / d1s≤-1.1。 2. The optical camera lens according to claim 1, wherein: The center thickness CT1 of the first lens on the optical axis, the spacing T12 between the first lens and the second lens on the optical axis, and the distance EP01 between the object side end surface of the lens barrel and the first spacing element along the optical axis satisfy: 0.7≤(CT1+T12) / EP01<1.

85.

3. The optical camera lens according to claim 1, wherein: The spacer element group further includes a second spacer element, the second spacer element is disposed on the image side surface of the second lens and in contact with the image side surface of the second lens; The distance EP12 between the first spacing element and the second spacing element along the optical axis, the maximum thickness CP1 of the first spacing element and the center thickness CT2 of the second lens on the optical axis satisfy: 1.6<(CP1+EP12) / CT2<3.

25.

4. The optical camera lens according to claim 1, wherein: The spacer element group further includes a second spacer element, the second spacer element is disposed on the image side surface of the second lens and in contact with the image side surface of the second lens; The distance EP12 between the first spacing element and the second spacing element along the optical axis, the maximum thickness CP2 of the second spacing element and the effective focal length f2 of the second lens satisfy: -43.65 <f2 / (EP12+CP2)<-26.45。 5. The optical camera lens according to claim 1, wherein: The spacer element group further includes a second spacer element, the second spacer element is disposed on the image side surface of the second lens and in contact with the image side surface of the second lens; The curvature radius R4 of the image side surface of the second lens, the inner diameter d2s of the object side surface of the second spacing element, and the outer diameter D2s of the object side surface of the second spacing element satisfy: 1.1 <R4 / (D2s-d2s)<3.85。 6. The optical imaging lens according to any one of claims 3 to 5, wherein: The spacer element group further includes a third spacer element, the third spacer element is disposed on the image side surface of the third lens and in contact with the image side surface of the third lens; The central thickness CT3 of the third lens on the optical axis, the spacing T34 between the third lens and the fourth lens on the optical axis, and the distance EP23 between the second spacing element and the third spacing element along the optical axis satisfy: 0.6 <EP23 / (CT3+T34)≤1.3。 7. The optical camera lens according to any one of claims 1 to 5, wherein: The spacer element group further includes a fourth spacer element, the fourth spacer element is disposed on the image side surface of the fourth lens and in contact with the image side surface of the fourth lens; The curvature radius R9 of the object side surface of the fifth lens, the inner diameter d4m of the image side surface of the fourth spacing element, and the outer diameter D4m of the image side surface of the fourth spacing element satisfy: -6.3 <R9 / (D4m-d4m)<-0.85。 8. The optical camera lens according to any one of claims 1 to 5, wherein: The spacer element group further includes a fourth spacer element, the fourth spacer element is disposed on the image side surface of the fourth lens and in contact with the image side surface of the fourth lens; The center thickness CT5 of the fifth lens on the optical axis, the center thickness CT6 of the sixth lens on the optical axis and the maximum thickness CP4 of the fourth spacer element satisfy: 3.6≤(CT5+CT6) / CP4<103.

55.

9. The optical camera lens according to any one of claims 1 to 5, wherein: The spacer element group further includes a third spacer element and a fourth spacer element, the third spacer element is disposed on the image side surface of the third lens and in contact with the image side surface of the third lens, and the fourth spacer element is disposed on the image side surface of the fourth lens and in contact with the image side surface of the fourth lens; Among them, the effective focal length f4 of the fourth lens, the spacing distance T34 between the third lens and the fourth lens on the optical axis, the maximum thickness CP3 of the third spacing element and the maximum thickness CP4 of the fourth spacing element satisfy: 6.35<|f4| / (CP3+T34+CP4)<50.

5.

10. The optical camera lens according to any one of claims 1 to 5, wherein: The spacer element group further includes a third spacer element and a fourth spacer element, the third spacer element is disposed on the image side surface of the third lens and in contact with the image side surface of the third lens, and the fourth spacer element is disposed on the image side surface of the fourth lens and in contact with the image side surface of the fourth lens; The center thickness CT4 of the fourth lens on the optical axis and the distance EP34 between the third spacing element and the fourth spacing element along the optical axis satisfy: 0.5 <CT4 / EP34≤2.7。 11. The optical camera lens according to any one of claims 1 to 5, wherein: The spacer element group further includes a third spacer element and a fourth spacer element, the third spacer element is disposed on the image side surface of the third lens and in contact with the image side surface of the third lens, and the fourth spacer element is disposed on the image side surface of the fourth lens and in contact with the image side surface of the fourth lens; Among them, the curvature radius R7 of the object side surface of the fourth lens, the curvature radius R8 of the image side surface of the fourth lens, the inner diameter d3m of the image side surface of the third spacing element and the inner diameter d4s of the object side surface of the fourth spacing element satisfy: -1.9<(R8×d4s) / (R7×d3m)≤-0.

7.

12. The optical camera lens according to any one of claims 1 to 5, wherein: The spacer element group further includes a fifth spacer element, the fifth spacer element being disposed on the image side surface of the fifth lens and in contact with the image side surface of the fifth lens; The curvature radius R10 of the image side surface of the fifth lens and the outer diameter D5s of the object side surface of the fifth spacing element satisfy: -0.6 <R10 / D5s≤-0.4。 13. The optical camera lens according to any one of claims 1 to 5, wherein: The spacer element group further includes a sixth spacer element, which is disposed on the image side of the sixth lens and in contact with the image side of the sixth lens; Wherein, the effective focal length f7 of the seventh lens, the central thickness CT7 of the seventh lens on the optical axis, and the maximum thickness CP6 of the sixth spacer element satisfy: 3.3 ≤ |f7| / (CT7 + CP6) ≤ 9.

5.

14. The optical camera lens according to any one of claims 1 to 5, wherein: The spacer element group further includes a sixth spacer element, which is disposed on the image side of the sixth lens and in contact with the image side of the sixth lens; Wherein, the radius of curvature R14 of the image side of the seventh lens and the inner diameter d6m of the image side of the sixth spacer element satisfy: 0.45 < |R14 / d6m| < 1.

0.

15. The optical camera lens according to any one of claims 1 to 5, wherein: The spacer element group further includes a fifth spacer element and a sixth spacer element. The fifth spacer element is disposed on the image side of the fifth lens and in contact with the image side of the fifth lens, and the sixth spacer element is disposed on the image side of the sixth lens and in contact with the image side of the sixth lens; Wherein, the effective focal length f6 of the sixth lens, the spacing distance T67 between the sixth lens and the seventh lens on the optical axis, and the distance EP56 along the optical axis of the fifth spacer element and the sixth spacer element satisfy: 1.1 < f6 / (EP56 + T67) < 1.

9.

16. The optical camera lens according to any one of claims 1 to 5, wherein: The spacer element group further includes a fifth spacer element and a sixth spacer element. The fifth spacer element is disposed on the image side of the fifth lens and in contact with the image side of the fifth lens, and the sixth spacer element is disposed on the image side of the sixth lens and in contact with the image side of the sixth lens; Wherein, the radius of curvature R11 of the object side of the sixth lens and the outer diameter D5m of the image side of the fifth spacer element satisfy: 0.3 < R11 / D5m ≤ 0.9; the radius of curvature R12 of the image side of the sixth lens and the inner diameter d6s of the object side of the sixth spacer element satisfy: -1.6 < R12 / d6s ≤ -0.

7.

17. The optical imaging lens according to any one of claims 1 to 5, wherein The object side of the first lens is concave, and the image side is convex; The object side of the second lens is convex, and the image side is concave; The third lens has a positive or negative optical power; The fourth lens has a positive or negative optical power; The object side of the fifth lens is concave, and the image side is convex; The object side of the sixth lens is convex, and the image side is convex; and The seventh lens has a positive or negative optical power, and its object side is concave.

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