Camera lens

Abstract

The invention provides a pick-up lens. The pick-up lens comprises a lens barrel; the lens group is assembled in the lens barrel and sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens from the object side to the image side; the lens group further comprises a plurality of shading elements, and the first shading element, the second shading element and the third shading element meet the condition that CP1 = CP2 = CP3; the camera lens satisfies: f1gt; 6 mm, 2 lt; fno * (EP01 / CT1) lt; 4; wherein f1 is the effective focal length of the first lens, CT1 is the center thickness of the first lens, EP01 is the axial distance from the first shading element to the object side end face of the lens barrel, fno is the F number of the camera lens, CP1 is the maximum thickness of the first shading element, CP2 is the maximum thickness of the second shading element, and CP3 is the maximum thickness of the third shading element. The camera lens solves the problem that the front-end lens of the camera lens in the prior art is easy to generate stray light.

Description

[0001] This invention is a divisional application of the invention patent with an application date of June 21, 2023, application number 2023107486946, and invention name “Camera Lens”. Technical Field

[0002] The present invention relates to the technical field of optical imaging equipment, and in particular to a camera lens. Background Art

[0003] With the advancement of technology, many electronic devices such as security surveillance cameras, mobile phones, and car imaging need to be equipped with camera lenses to meet the functions of photography and videography. In order to meet higher video requirements, it is urgent to design camera lenses with higher imaging quality. The seven-element camera lens can correct and compensate for each other through the combination of multiple lenses, improve the ability to gather light, enhance the lens resolution and contrast, and greatly improve the quality of imaging. However, in the seven-element camera lens, the front lens of the camera lens is prone to deflect light to the lens barrel to generate stray light, resulting in stray light with relatively concentrated energy appearing at the head of the camera lens.

[0004] That is to say, in the prior art, the camera lens has the problem that the front lens is prone to generate stray light. Summary of the invention

[0005] The main purpose of the present invention is to provide a camera lens to solve the problem that the front end lens of the camera lens in the prior art easily generates stray light.

[0006] To achieve the above object, according to one aspect of the present invention, there is provided a camera lens, comprising: a lens barrel; a lens group assembled in the lens barrel, the lens group sequentially including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens from the object side to the image side; the lens group further includes a plurality of light-shielding elements, and at least the first light-shielding element to the seventh light-shielding element are included in the plurality of light-shielding elements; the first light-shielding element is located between the first lens and the second lens and is in partial contact with the image side surface of the first lens; the second light-shielding element is located between the second lens and the third lens and is in partial contact with the image side surface of the second lens; the third light-shielding element is located between the third lens and the fourth lens and is in partial contact with the image side surface of the third lens; the fourth light-shielding element is located between the fourth lens and the fifth lens and is in partial contact with the image side surface of the fourth lens; the fifth light-shielding element is located between the fifth lens and the sixth lens and is in partial contact with the image side surface of the fifth lens; the sixth light-shielding element is located between the sixth lens and the seventh lens and is in partial contact with the image side surface of the sixth lens; the seventh light-shielding element is located on the image side of the seventh lens and is in partial contact with the image side surface of the seventh lens; wherein, the following is satisfied among the first light-shielding element, the second light-shielding element and the third light-shielding element: CP1 = CP2 = CP3; the camera lens satisfies: f1 > 6 mm, 2 < fno * (EP01 / CT1) < 4; wherein, f1 is the effective focal length of the first lens, CT1 is the central thickness of the first lens, EP01 is the axial distance from the first light-shielding element to the object-side end face of the lens barrel, fno is the F-number of the camera lens, CP1 is the maximum thickness of the first light-shielding element, CP2 is the maximum thickness of the second light-shielding element, and CP3 is the maximum thickness of the third light-shielding element.

[0007] According to another aspect of the present invention, there is provided a camera lens, comprising: a lens barrel; a lens group assembled in the lens barrel, the 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 in sequence from the object side to the image side; the lens group further comprising a plurality of shading elements, the plurality of shading elements comprising at least the first shading element to the seventh shading element; the first shading element is located between the first lens and the second lens, and is in contact with the image side surface portion of the first lens; the second shading element is located between the second lens and the third lens, and is in contact with the image side surface portion of the second lens; the third shading element is located between the third lens and the fourth lens, and is in contact with the image side surface portion of the third lens; the fourth shading element is located between the fourth lens and the fifth lens, and is in contact with the image side surface portion of the fourth lens; the fifth shading element is located between the fifth lens and the sixth lens, and is in contact with the image side surface portion of the The image side surface of the fifth lens is partially in contact; the sixth shading element is located between the sixth lens and the seventh lens, and is partially in contact with the image side surface of the sixth lens; the seventh shading element is located on the image side of the seventh lens, and is partially in contact with the image side surface of the seventh lens; wherein the first shading element, the second shading element and the third shading element satisfy: CP1=CP2=CP3; the camera lens satisfies: -12<(f1+f2) / (CP1+EP12+CP2+EP23)<-5, wherein f1 is the effective focal length of the first lens, f2 is the effective focal length of the second lens, CP1 is the maximum thickness of the first shading element, CP2 is the maximum thickness of the second shading element, EP12 is the axial distance from the image side surface of the first shading element to the object side surface of the second shading element, and EP23 is the axial distance from the image side surface of the second shading element to the object side surface of the third shading element. Since the object side surface of the first lens and the image side surface of the first lens easily reflect light onto the inner wall of the lens barrel to generate stray light, and at the same time, the lens barrel is filled with defects and the hole is not sharp and shiny, which causes needle-shaped, flocculent and feather-shaped stray light, resulting in poor imaging quality of the camera lens. By controlling the parameters of the first lens, the second lens, the first shading element, the second shading element and the third shading element, it is beneficial to control the deflection angle of light, which can effectively suppress the generation of stray light. At the same time, controlling the spacing between the shading elements is beneficial to adjusting the aberration of the camera lens during the assembly process, while improving the accuracy of the camera lens, and also helping the shading element to effectively block stray light, further reducing stray light and improving imaging quality.

[0008] According to another aspect of the present invention, there is provided a camera lens, comprising: a lens barrel; a lens group assembled in the lens barrel, the lens group sequentially including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens from the object side to the image side; the lens group further includes a plurality of light-shielding elements, and at least the first light-shielding element to the seventh light-shielding element are included in the plurality of light-shielding elements; the first light-shielding element is located between the first lens and the second lens and is in partial contact with the image side surface of the first lens; the second light-shielding element is located between the second lens and the third lens and is in partial contact with the image side surface of the second lens; the third light-shielding element is located between the third lens and the fourth lens and is in partial contact with the image side surface of the third lens; the fourth light-shielding element is located between the fourth lens and the fifth lens and is in partial contact with the image side surface of the fourth lens; the fifth light-shielding element is located between the fifth lens and the sixth lens and is in partial contact with the image side surface of the fifth lens; the sixth light-shielding element is located between the sixth lens and the seventh lens and is in partial contact with the image side surface of the sixth lens; the seventh light-shielding element is located on the image side of the seventh lens and is in partial contact with the image side surface of the seventh lens; wherein, the following is satisfied among the first light-shielding element, the second light-shielding element and the third light-shielding element: CP1 = CP2 = CP3; the camera lens satisfies: 35 < T23 / CP2 + T34 / CP3 < 45, where CP2 is the maximum thickness of the second light-shielding element, CP3 is the maximum thickness of the third light-shielding element, T23 is the on-axis distance from the image side surface of the second lens to the object side surface of the third lens, and T34 is the on-axis distance from the image side surface of the third lens to the object side surface of the fourth lens. By controlling parameters such as the second lens, the third lens, the fourth lens, and the first light-shielding element, the second light-shielding element and the third light-shielding element, it is beneficial to control the distance between the lenses, and further control the size of the air gap between the lenses, ensure the stability of the gap between the second lens and the third lens and between the third lens and the fourth lens, reduce the sensitivity of the change of the air gap during the assembly process, reduce the influence of the air gap on the performance parameters of the camera lens, and at the same time improve the stable assembly and bearing between the lenses.

[0009] Further, the camera lens satisfies: -12 < (f1 + f2) / (CP1 + EP12 + CP2 + EP23) < -5, where f1 is the effective focal length of the first lens, f2 is the effective focal length of the second lens, CP1 is the maximum thickness of the first light-shielding element, CP2 is the maximum thickness of the second light-shielding element, EP12 is the on-axis distance from the image side surface of the first light-shielding element to the object side surface of the second light-shielding element, and EP23 is the on-axis distance from the image side surface of the second light-shielding element to the object side surface of the third light-shielding element.

[0010] Further, the imaging lens satisfies: 35 < T23 / CP2 + T34 / CP3 < 45, where CP2 is the maximum thickness of the second light-shielding element, CP3 is the maximum thickness of the third light-shielding element, T23 is the on-axis distance from the image side of the second lens to the object side of the third lens, and T34 is the on-axis distance from the image side of the third lens to the object side of the fourth lens.

[0011] Further, the imaging lens satisfies: 1 < EP34 / CT4*N4 < 4, where EP34 is the on-axis distance from the image side of the third light-shielding element to the object side of the fourth light-shielding element, CT4 is the center thickness of the fourth lens, and N4 is the refractive index of the fourth lens.

[0012] Further, the imaging lens satisfies: 3 < f45 / (EP45 + CP5 + EP56) < 7, where f45 is the combined focal length of the fourth lens and the fifth lens, EP45 is the on-axis distance from the image side of the fourth light-shielding element to the object side of the fifth light-shielding element, EP56 is the on-axis distance from the image side of the fifth light-shielding element to the object side of the sixth light-shielding element, and CP5 is the maximum thickness of the fifth light-shielding element.

[0013] Further, the imaging lens satisfies: 10 < f6 / EP56 - f7 / EP67 < 25, where f6 is the effective focal length of the sixth lens, f7 is the effective focal length of the seventh lens, EP56 is the on-axis distance from the image side of the fifth light-shielding element to the object side of the sixth light-shielding element, and EP67 is the on-axis distance from the image side of the sixth light-shielding element to the object side of the seventh light-shielding element.

[0014] Further, the imaging lens satisfies: -20 < f7 / EP67*N7 < -5, where f7 is the effective focal length of the seventh lens, EP67 is the on-axis distance from the image side of the sixth light-shielding element to the object side of the seventh light-shielding element, and N7 is the refractive index of the seventh lens.

[0015] Further, the imaging lens satisfies: 5 < f / (CP5 + CP6) < 15, where f is the focal length of the imaging lens, CP5 is the maximum thickness of the fifth light-shielding element, and CP6 is the maximum thickness of the sixth light-shielding element.

[0016] Further, the lens group further includes a fourth auxiliary light-shielding element, and the fourth auxiliary light-shielding element is located between the fourth light-shielding element and the fifth lens.

[0017] Further, the lens group further includes a fifth auxiliary light-shielding element, and the fifth auxiliary light-shielding element is located between the fifth light-shielding element and the sixth lens.

[0018] Further, the lens group further includes a sixth auxiliary light-shielding element, and the sixth auxiliary light-shielding element is located between the sixth light-shielding element and the seventh lens.

[0019] According to the technical solution of the present invention, a camera lens comprises a lens barrel and a lens group assembled in the lens barrel, wherein the lens group comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens in sequence from the object side to the image side; the lens group further comprises a plurality of shading elements, wherein the plurality of shading elements at least comprise a first shading element to a seventh shading element; the first shading element is located between the first lens and the second lens and is in contact with the image side surface portion of the first lens; the second shading element is located between the second lens and the third lens and is in contact with the image side surface portion of the second lens; the third shading element is located between the third lens and the fourth lens and is in contact with the image side surface portion of the third lens; the fourth shading element is located between the fourth lens and the fifth lens and is in contact with the image side surface portion of the fourth lens; the fifth shading element is located between the fifth lens and the sixth lens and is in contact with the image side surface portion of the fifth lens; the sixth shading element is located between the sixth lens and the seventh lens and is in contact with the image side surface portion of the sixth lens; the seventh shading element is located on the image side of the seventh lens and is in contact with the image side surface portion of the seventh lens;

[0020] The first shading element, the second shading element and the third shading element satisfy: CP1 = CP2 = CP3;

[0021] Camera lens meets: f1>6mm, 2 <fno*(EP01 / CT1)<4;

[0022] Among them, f1 is the effective focal length of the first lens, CT1 is the center thickness of the first lens, EP01 is the axial distance from the first shading element to the object side end face of the lens barrel, fno is the F number of the camera lens, CP1 is the maximum thickness of the first shading element, CP2 is the maximum thickness of the second shading element, and CP3 is the maximum thickness of the third shading element.

[0023] Since the object side surface of the first lens and the image side surface of the first lens easily reflect light onto the inner wall of the lens barrel to generate stray light, and at the same time, the lens barrel is filled with defects and the hole is not sharp, shining, etc., causing needle-shaped, flocculent and feather-shaped stray light, resulting in poor imaging quality of the camera lens. By controlling the parameters such as the first lens, the first shading element, the second shading element, the third shading element, and the F number of the camera lens, the amount of light entering the camera lens is effectively reduced, and the generation of stray light can be significantly reduced. At the same time, the first shading element, the second shading element and the third shading element can also block the stray light, effectively reducing the appearance of stray light, and controlling the focal length and center thickness of the first lens is conducive to reducing the refraction angle of light, and further reducing the generation of complex stray light. By controlling the above parameters, it is conducive to reducing the stray light generated by the object side surface of the first lens and the image side surface of the first lens reflected onto the inner wall surface of the lens barrel, so as to improve the stray light with relatively concentrated energy appearing at the head of the camera lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0025] Figure 1 A simulation diagram of stray light of a camera lens in the prior art is shown; and

[0026] Figure 2 A stray light simulation diagram of a camera lens according to an optional embodiment of the present invention is shown;

[0027] Figure 3 A partial parameter schematic diagram of an optional embodiment of the present invention is shown;

[0028] Figures 4 to 6 It shows a schematic structural diagram of the camera lens of Example 1 of the present invention in the first state, the second state and the third state;

[0029] Figures 7 to 10 The axial chromatic aberration curve, the magnification chromatic aberration curve, the astigmatism curve and the distortion curve of Example 1 of the present invention are shown;

[0030] Figures 11 to 13 A schematic diagram showing the structure of the camera lens of Example 2 of the present invention in the first state, the second state and the third state;

[0031] Figures 14 to 17 The axial chromatic aberration curve, the magnification chromatic aberration curve, the astigmatism curve and the distortion curve of Example 2 of the present invention are shown;

[0032] Figures 18 to 20 A schematic diagram showing the structure of the camera lens of Example 3 of the present invention in the first state, the second state and the third state;

[0033] Figure 21 to Figure 24 The axial chromatic aberration curve, the magnification chromatic aberration curve, the astigmatism curve and the distortion curve of Example 3 of the present invention are shown;

[0034] Fig.25 A light trend diagram of a camera lens according to an optional embodiment of the present invention is shown.

[0035] The above drawings include the following reference numerals:

[0036] E1, first lens; P1, first spacer; E2, second lens; P2, second spacer; E3, third lens; P3, third spacer; E4, fourth lens; P4, fourth spacer; P4b, fourth auxiliary spacer; E5, fifth lens; P5, fifth spacer; P5b, fifth auxiliary spacer; E6, sixth lens; P6, sixth spacer; P6b, sixth auxiliary spacer; E7, seventh lens; P7, seventh spacer. DETAILED DESCRIPTION

[0037] 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 invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0039] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[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 area refers to the area 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 area; 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 area. The judgment of the surface shape in the paraxial area can be based on the judgment method of ordinary knowledgeable people in this field, and the positive and negative R value (R refers to the radius of curvature of the paraxial area, usually refers to the R value on the lens database (lens data) in the optical software) is used to judge the convexity and concavity. For the object side, when the R value is positive, it is judged as a convex surface, and when the R value is negative, it is judged as a concave surface; for the image side, when the R value is positive, it is judged as a concave surface, and when the R value is negative, it is judged as a convex surface.

[0043] In the present application, the object side surface refers to the light incident side surface, and the image side surface refers to the light exiting side surface.

[0044] In order to solve the problem in the prior art that the front end lens of a camera lens is prone to generate stray light, the present invention provides a camera lens.

[0045] Embodiment 1

[0046] like Figures 2 to 25 As shown, the camera lens includes a lens barrel and a lens group assembled in the lens barrel, the 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 in sequence from the object side to the image side; the lens group also includes a plurality of shading elements, the plurality of shading elements include at least a first shading element to a seventh shading element; the first shading element is located between the first lens and the second lens, and is in contact with the image side surface portion of the first lens; the second shading element is located between the second lens and the third lens, and is in contact with the image side surface portion of the second lens; the third shading element is located between the third lens and the fourth lens, and is in contact with the image side surface portion of the third lens; the fourth shading element is located between the fourth lens and the fifth lens, and is in contact with the image side surface portion of the fourth lens; the fifth shading element is located between the fifth lens and the sixth lens, and is in contact with the image side surface portion of the fifth lens; the sixth shading element is located between the sixth lens and the seventh lens, and is in contact with the image side surface portion of the sixth lens; the seventh shading element is located on the image side of the seventh lens, and is in contact with the image side surface portion of the seventh lens;

[0047] The first shading element, the second shading element and the third shading element satisfy: CP1 = CP2 = CP3;

[0048] Camera lens meets: f1>6mm, 2 <fno*(EP01 / CT1)<4;

[0049] Among them, f1 is the effective focal length of the first lens, CT1 is the center thickness of the first lens, EP01 is the axial distance from the first shading element to the object side end face of the lens barrel, fno is the F number of the camera lens, CP1 is the maximum thickness of the first shading element, CP2 is the maximum thickness of the second shading element, and CP3 is the maximum thickness of the third shading element.

[0050] Since the object side surface of the first lens and the image side surface of the first lens easily reflect light onto the inner wall of the lens barrel, stray light is generated. At the same time, the lens barrel is filled with defects and the hole is not sharp and shiny, which causes needle-shaped, floc-shaped and feather-shaped stray light, resulting in poor imaging quality of the camera lens. By controlling the parameters such as the first lens, the first shading element, the second shading element, the third shading element, and the F number of the camera lens, the amount of light entering the camera lens is effectively reduced, and the generation of stray light can be significantly reduced. At the same time, the first shading element, the second shading element and the third shading element can also block the stray light, effectively reducing the appearance of stray light. Controlling the focal length and center thickness of the first lens is conducive to reducing the refraction angle of light and further reducing the generation of complex stray light. The control of the above parameters is conducive to reducing the stray light generated by the object side surface of the first lens and the image side surface of the first lens reflected onto the inner wall surface of the lens barrel, so as to improve the stray light with more concentrated energy appearing at the head of the camera lens. From Figure 1 and Figure 2 It can be seen from the comparison that the camera lens in the prior art has more stray light, while the stray light in the camera lens in the present application is significantly reduced.

[0051] Preferably, 2.4 <fno*(EP01 / CT1)<3.5。

[0052] In this embodiment, the camera lens satisfies: -12<(f1+f2) / (CP1+EP12+CP2+EP23)<-5, wherein f1 is the effective focal length of the first lens, f2 is the effective focal length of the second lens, CP1 is the maximum thickness of the first shading element, CP2 is the maximum thickness of the second shading element, EP12 is the axial distance from the image side of the first shading element to the object side of the second shading element, and EP23 is the axial distance from the image side of the second shading element to the object side of the third shading element. By controlling (f1+f2) / (CP1+EP12+CP2+EP23) within a reasonable range, it is helpful to adjust the aberration of the camera lens during the assembly process and improve the accuracy of the camera lens. The restriction on the effective focal length of the first lens and the second lens is helpful to control the deflection angle of the light, which can effectively suppress the generation of stray light, and at the same time control the distance between two adjacent shading elements, so that the shading element effectively blocks the stray light, further reduces the stray light, and improves the imaging quality. Preferably, -11.5<(f1+f2) / (CP1+EP12+CP2+EP23)<-5.5.

[0053] In this embodiment, the camera lens satisfies: 35 < T23 / CP2 + T34 / CP3 < 45, where CP2 is the maximum thickness of the second light-shielding element, CP3 is the maximum thickness of the third light-shielding element, T23 is the on-axis distance from the image side of the second lens to the object side of the third lens, and T34 is the on-axis distance from the image side of the third lens to the object side of the fourth lens. Controlling T23 / CP2 + T34 / CP3 within a reasonable range can ensure more stable assembly and abutment between the lenses, control the distance between the lenses, and thus control the size of the air gap between the lenses, reducing the influence of the air gap on the performance parameters of the camera lens. Preferably, 36 < T23 / CP2 + T34 / CP3 < 44.

[0054] In this embodiment, the camera lens satisfies: 1 < EP34 / CT4*N4 < 4, where EP34 is the on-axis distance from the image side of the third light-shielding element to the object side of the fourth light-shielding element, CT4 is the central thickness of the fourth lens, and N4 is the refractive index of the fourth lens. Controlling EP34 / CT4*N4 within a reasonable range can, on the one hand, effectively improve the step difference between the lenses and enhance the stability of assembly. On the other hand, it can ensure the shape of the fourth lens, improve the stability of lens forming, reduce the difficulty and manufacturing cost of processing, improve the air gap between the fourth lens and the front and rear lenses, and reduce the influence of the air gap on the performance parameters of the camera lens. Preferably, 1.1 < EP34 / CT4*N4 < 3.7.

[0055] In this embodiment, the camera lens satisfies: 3 < f45 / (EP45 + CP5 + EP56) < 7, where f45 is the combined focal length of the fourth lens and the fifth lens, EP45 is the on-axis distance from the image side of the fourth light-shielding element to the object side of the fifth light-shielding element, EP56 is the on-axis distance from the image side of the fifth light-shielding element to the object side of the sixth light-shielding element, and CP5 is the maximum thickness of the fifth light-shielding element. Controlling f45 / (EP45 + CP5 + EP56) within a reasonable range can effectively block the stray light generated by the mechanism part of the lens and can also effectively improve the aberration generated at the fifth lens and the sixth lens, improving the imaging quality of the camera lens. Preferably, 3.3 < f45 / (EP45 + CP5 + EP56) < 7.

[0056] In this embodiment, the camera lens satisfies: 10 < f6 / EP56 - f7 / EP67 < 25, where f6 is the effective focal length of the sixth lens, f7 is the effective focal length of the seventh lens, EP56 is the on-axis distance from the image side of the fifth light-shielding element to the object side of the sixth light-shielding element, and EP67 is the on-axis distance from the image side of the sixth light-shielding element to the object side of the seventh light-shielding element. Controlling f6 / EP56 - f7 / EP67 within a reasonable range can improve the refractive index of the lens, facilitate lens molding, reduce the molding difficulty and cost, while improving the assembly step difference between the sixth lens and the seventh lens, increasing the stability of the camera lens, enhancing the assembly yield, and also controlling the light path and reducing the generation of stray light. Preferably, 12 < f6 / EP56 - f7 / EP67 < 24.

[0057] In this embodiment, the camera lens satisfies: -20 < f7 / EP67 * N7 < -5, where f7 is the effective focal length of the seventh lens, EP67 is the on-axis distance from the image side of the sixth light-shielding element to the object side of the seventh light-shielding element, and N7 is the refractive index of the seventh lens. Controlling f7 / EP67 * N7 within a reasonable range is beneficial to improving the surface curvature of the seventh lens, reducing imaging distortion, while facilitating the processing and molding of the seventh lens, enhancing the yield and reducing the cost, and also improving the assembly step difference between the sixth lens and the seventh lens, enhancing the assembly stability, increasing the assembly yield, and reducing the generation of stray light. Preferably, -18 < f7 / EP67 * N7 < -5.5.

[0058] In this embodiment, the camera lens satisfies: 5 < f / (CP5 + CP6) < 15, where f is the focal length of the camera lens, CP5 is the maximum thickness of the fifth light-shielding element, and CP6 is the maximum thickness of the sixth light-shielding element. Controlling f / (CP5 + CP6) within a reasonable range can further improve the assembly stability and increase the ways to adjust the aberration of the camera lens, and further improve the imaging quality of the camera lens while meeting the requirements of the application scenario. Preferably, 5.4 < f / (CP5 + CP6) < 13.

[0059] In this embodiment, the lens group further includes a fourth auxiliary light-shielding element, which is located between the fourth light-shielding element and the fifth lens. The setting of the fourth auxiliary light-shielding element is beneficial to enhancing the assembly stability between the fourth lens and the fifth lens, transmitting the assembly stress, improving the internal reflection stray light generated in the optical structure area of the fourth lens, and improving the imaging quality of the camera lens.

[0060] In this embodiment, the lens group further includes a fifth auxiliary shading element, and the fifth auxiliary shading element is located between the fifth shading element and the sixth lens. The arrangement of the fifth auxiliary shading element is conducive to enhancing the assembly stability between the fifth lens and the sixth lens, transmitting assembly stress, improving the internal reflection stray light generated by the optical structure area of ​​the fifth lens, and improving the imaging quality of the camera lens.

[0061] In this embodiment, the lens group further includes a sixth auxiliary shading element, which is located between the sixth shading element and the seventh lens. The arrangement of the sixth auxiliary shading element is conducive to enhancing the assembly stability between the sixth lens and the seventh lens, transmitting assembly stress, improving the internal reflection stray light generated by the optical structure area of ​​the sixth lens, and improving the imaging quality of the camera lens.

[0062] Embodiment 2

[0063] like Figures 2 to 25 As shown, the camera lens includes a lens barrel and a lens group assembled in the lens barrel, the 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 in sequence from the object side to the image side; the lens group also includes a plurality of shading elements, the plurality of shading elements include at least a first shading element to a seventh shading element; the first shading element is located between the first lens and the second lens, and is in contact with the image side surface portion of the first lens; the second shading element is located between the second lens and the third lens, and is in contact with the image side surface portion of the second lens; the third shading element is located between the third lens and the fourth lens, and is in contact with the image side surface portion of the third lens; the fourth shading element is located between the fourth lens and the fifth lens, and is in contact with the image side surface portion of the fourth lens; the fifth shading element is located between the fifth lens and the sixth lens, and is in contact with the image side surface portion of the fifth lens; the sixth shading element is located between the sixth lens and the seventh lens, and is in contact with the image side surface portion of the sixth lens; the seventh shading element is located on the image side of the seventh lens, and is in contact with the image side surface portion of the seventh lens;

[0064] The first shading element, the second shading element and the third shading element satisfy: CP1 = CP2 = CP3;

[0065] The camera lens meets the following requirements: -12<(f1+f2) / (CP1+EP12+CP2+EP23)<-5;

[0066] Among them, f1 is the effective focal length of the first lens, f2 is the effective focal length of the second lens, CP1 is the maximum thickness of the first shading element, CP2 is the maximum thickness of the second shading element, EP12 is the axial distance from the image side surface of the first shading element to the object side surface of the second shading element, EP23 is the axial distance from the image side surface of the second shading element to the object side surface of the third shading element, and CP3 is the maximum thickness of the third shading element.

[0067] Since the object side surface of the first lens and the image side surface of the first lens easily reflect light onto the inner wall of the lens barrel, stray light is generated. At the same time, the lens barrel is filled with defects and the hole is not sharp and shiny, which causes needle-shaped, floc-shaped and feather-shaped stray light, resulting in poor imaging quality of the camera lens. By controlling the parameters of the first lens, the second lens, the first shading element, the second shading element and the third shading element, it is beneficial to control the deflection angle of light, which can effectively suppress the generation of stray light. At the same time, controlling the spacing between the shading elements is beneficial to adjusting the aberration of the camera lens during the assembly process, while improving the accuracy of the camera lens, and it is also beneficial for the shading element to effectively block stray light, further reducing stray light and improving imaging quality. Figure 1 and Figure 2 It can be seen from the comparison that the camera lens in the prior art has more stray light, while the stray light in the camera lens in the present application is significantly reduced.

[0068] It should be noted that the camera lens in the second embodiment also satisfies the other relationship expressions in the first embodiment, which will not be described in detail here.

[0069] Embodiment 3

[0070] like Figures 2 to 24 As shown, the camera lens includes a lens barrel and a lens group assembled in the lens barrel, the 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 in sequence from the object side to the image side; the lens group also includes a plurality of shading elements, the plurality of shading elements include at least a first shading element to a seventh shading element; the first shading element is located between the first lens and the second lens, and is in contact with the image side surface portion of the first lens; the second shading element is located between the second lens and the third lens, and is in contact with the image side surface portion of the second lens; the third shading element is located between the third lens and the fourth lens, and is in contact with the image side surface portion of the third lens; the fourth shading element is located between the fourth lens and the fifth lens, and is in contact with the image side surface portion of the fourth lens; the fifth shading element is located between the fifth lens and the sixth lens, and is in contact with the image side surface portion of the fifth lens; the sixth shading element is located between the sixth lens and the seventh lens, and is in contact with the image side surface portion of the sixth lens; the seventh shading element is located on the image side of the seventh lens, and is in contact with the image side surface portion of the seventh lens;

[0071] The first shading element, the second shading element and the third shading element satisfy: CP1 = CP2 = CP3;

[0072] Camera lens meets: 35 <T23 / CP2+T34 / CP3<45;

[0073] Among them, CP2 is the maximum thickness of the second shading element, CP3 is the maximum thickness of the third shading element, T23 is the axial distance from the image side surface of the second lens to the object side surface of the third lens, and T34 is the axial distance from the image side surface of the third lens to the object side surface of the fourth lens.

[0074] By controlling parameters such as the second lens, the third lens, the fourth lens, the first shading element, the second shading element, and the third shading element, it is beneficial to control the distance between the lenses, and then control the size of the air gap between the lenses, ensure the stability of the gap between the second lens and the third lens and between the third lens and the fourth lens, reduce the sensitivity of the air gap change during the assembly process, reduce the influence of the air gap on the performance parameters of the camera lens, and at the same time improve the stable assembly support between the lenses.

[0075] It should be noted that the camera lens in the third embodiment also satisfies the other relationship expressions in the first embodiment, which will not be described in detail here.

[0076] Optionally, the camera lens may further include a filter for correcting color deviation and / or a protective glass for protecting a photosensitive element located on the imaging surface.

[0077] The camera lens in the present application may use multiple lenses, such as the seven lenses mentioned above. By reasonably allocating the focal length, surface shape, center thickness of each lens, and axial distance between each lens, etc., the imaging quality of the camera lens can be effectively increased, the sensitivity of the camera lens can be reduced, and the processability of the camera lens can be improved, making the camera lens more conducive to production and processing and applicable to portable electronic devices such as smart phones.

[0078] In the present application, at least one of the mirror surfaces of each lens is an aspherical mirror 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 using an aspherical lens, the aberration occurring during imaging can be eliminated as much as possible, thereby improving the imaging quality.

[0079] However, those skilled in the art should understand that, without departing from the technical solution claimed in the present application, the number of lenses constituting the camera lens can be changed to obtain the various results and advantages described in this specification. For example, although seven lenses are described as an example in the embodiments, the camera lens is not limited to including seven lenses. If necessary, the camera lens may also include other numbers of lenses.

[0080] exist Figure 4, S1 is the object-side surface of the first lens, S2 is the image-side surface of the first lens, S3 is the object-side surface of the second lens, S4 is the image-side surface of the second lens, S5 is the object-side surface of the third lens, S6 is the image-side surface of the third lens, S7 is the object-side surface of the fourth lens, S8 is the image-side surface of the fourth lens, S9 is the object-side surface of the fifth lens, S10 is the image-side surface of the fifth lens, S11 is the object-side surface of the sixth lens, S12 is the image-side surface of the sixth lens, S13 is the object-side surface of the seventh lens, and S14 is the image-side surface of the seventh lens.

[0081] The following further describes examples of specific surface shapes and parameters of the camera lens applicable to the above-mentioned embodiments with reference to the accompanying drawings.

[0082] It should be noted that any one of the following examples 1 to 3 is applicable to all embodiments of the present application.

[0083] Example 1

[0084] like Figures 4 to 10 As shown, the camera lens of Example 1 of the present application is described. Figure 4 FIG. 1 shows a schematic diagram of the structure of the camera lens of Example 1 in the first state. Figure 5 FIG. 1 shows a schematic diagram of the structure of the camera lens of Example 1 in the second state. Figure 6 A schematic structural diagram of the camera lens of Example 1 in the third state is shown.

[0085] like Figure 4 As shown, the camera lens includes, from the object side to the image side, a first lens E1, a first isolation member P1, a second lens E2, a second isolation member P2, a third lens E3, a third isolation member P3, a fourth lens E4, a fourth isolation member P4, a fourth auxiliary isolation member P4b, a fifth lens E5, a fifth isolation member P5, a sixth lens E6, a sixth isolation member P6, a sixth auxiliary isolation member P6b, a seventh lens E7, and a seventh isolation member P7.

[0086] exist Figure 5 The second state shown in Figure 4 The first state shown is similar except that the dimensions of the spacers are slightly different.

[0087] exist Figure 6 The third state shown in Figure 4 Compared to the first state shown, Figure 6 There is no fourth auxiliary spacer P4b, and the sizes of the remaining spacers are slightly different.

[0088] Table 1 shows the basic structural parameters of the camera lens of Example 1, wherein the units of the curvature radius and thickness / distance are all millimeters (mm).

[0089]

[0090]

[0091] Table 1

[0092] In Example 1, the object-side surface and the image-side surface of some lenses among the first lens E1 to the seventh lens E7 are aspherical surfaces, and the surface shape of each aspherical lens can be defined by but not limited to the following aspherical surface formula:

[0093]

[0094] Among them, 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, that is, the paraxial curvature c is the reciprocal of the curvature radius 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 below gives the cone coefficients and high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, A30 that can be used for each aspheric mirror surface S1-S14 in Example 1.

[0095]

[0096]

[0097] Table 2

[0098] Figure 7 The axial chromatic aberration curve of the camera lens of Example 1 is shown, which indicates the deviation of the focusing point of light rays of different wavelengths passing through the camera lens. Figure 8 The chromatic aberration curve of the camera lens of Example 1 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the camera lens. Fig. 9 The astigmatism curve of the imaging lens of Example 1 is shown, which indicates the meridional field curvature and the sagittal field curvature. Fig.10 The distortion curve of the camera lens of Example 1 is shown, which represents the distortion magnitude values ​​corresponding to different field angles.

[0099] according to Figures 7 to 10 It can be seen that the camera lens given in Example 1 can achieve good imaging quality.

[0100] Example 2

[0101] like Figures 11 to 17 As shown, the camera lens of Example 2 of the present application is described. Fig.11 The schematic diagram of the structure of the camera lens of Example 2 in the first state is shown. Fig.12 FIG. 2 shows a schematic diagram of the structure of the camera lens of Example 2 in the second state. Fig.13A schematic structural diagram of the camera lens of Example 2 in the third state is shown.

[0102] like Fig.11 As shown, the camera lens includes, from the object side to the image side, a first lens E1, a first isolation member P1, a second lens E2, a second isolation member P2, a third lens E3, a third isolation member P3, a fourth lens E4, a fourth isolation member P4, a fifth lens E5, a fifth isolation member P5, a fifth auxiliary isolation member P5b, a sixth lens E6, a sixth isolation member P6, a sixth auxiliary isolation member P6b, a seventh lens E7, and a seventh isolation member P7.

[0103] exist Fig.12 The second state shown in Fig.11 The first state shown is similar except that the dimensions of the spacers are slightly different.

[0104] exist Fig.13 The third state shown in Fig.11 The first state shown is similar except that the dimensions of the spacers are slightly different.

[0105] Table 3 shows the basic structural parameters of the camera lens of Example 2, wherein the units of the radius of curvature and thickness / distance are both millimeters (mm).

[0106]

[0107]

[0108] Table 3

[0109] Table 4 gives the cone coefficients and higher-order coefficients that can be used for each aspherical mirror surface S1-S14 in Example 2.

[0110] Face number A4 A6 A8 A10 A12 A14 A16 S1 -5.8381E-04 9.7851E-03 -4.8413E-02 1.5042E-01 -3.1488E-01 4.5962E-01 -4.7882E-01 S2 -2.5164E-03 -1.0430E-02 7.0822E-02 -2.3344E-01 4.9771E-01 -7.3188E-01 7.6581E-01 S3 -1.2559E-02 1.6813E-02 -5.3323E-02 1.5820E-01 -3.1556E-01 4.3456E-01 -4.2286E-01 S4 -7.2458E-03 -4.2872E-03 5.5757E-02 -2.1558E-01 5.3306E-01 -8.9962E-01 1.0728E+00 S5 5.1550E-04 2.9283E-03 -1.7898E-02 5.0833E-02 -7.9409E-02 4.6617E-02 5.9551E-02 S6 -3.3826E-04 -3.0341E-02 1.6709E-01 -5.9047E-01 1.3925E+00 -2.2963E+00 2.7161E+00 S7 -2.7781E-02 -1.1494E-03 -7.9220E-03 -1.9748E-03 8.8832E-02 -2.8862E-01 5.0158E-01 S8 -2.2287E-02 -4.3191E-03 2.0248E-02 -4.5469E-02 6.4671E-02 -6.3957E-02 4.5539E-02 S9 -2.0217E-02 8.4774E-03 2.2757E-03 -1.0108E-02 1.1368E-02 -7.8614E-03 3.7410E-03 S10 -4.5147E-02 1.1859E-02 3.9675E-03 -1.0251E-02 8.9869E-03 -4.8321E-03 1.7588E-03 S11 -2.4328E-02 7.0264E-03 -2.9509E-03 8.2104E-04 -1.8010E-04 3.4418E-05 -5.3805E-06 S12 2.7693E-03 1.1984E-03 -1.3972E-03 3.1804E-04 -2.8743E-05 -1.7130E-06 1.0911E-06 S13 -8.4305E-02 1.0000E-02 3.6740E-03 -2.3584E-03 6.3239E-04 -1.0236E-04 1.1015E-05 S14 -9.3661E-02 2.4948E-02 -5.8913E-03 1.3242E-03 -2.6980E-04 4.3228E-05 -5.0492E-06 Face number A18 A20 A22 A24 A26 A28 A30 S1 3.6039E-01 -1.9630E-01 7.6602E-02 -2.0863E-02 3.7637E-03 -4.0394E-04 1.9515E-05 S2 -5.7901E-01 3.1733E-01 -1.2488E-01 3.4396E-02 -6.2949E-03 6.8762E-04 -3.3927E-05 S3 2.9464E-01 -1.4734E-01 5.2346E-02 -1.2867E-02 2.0737E-03 -1.9623E-04 8.2078E-06 S4 -9.1973E-01 5.6928E-01 -2.5230E-01 7.8126E-02 -1.6064E-02 1.9721E-03 -1.0947E-04 S5 -1.5774E-01 1.6766E-01 -1.0660E-01 4.3212E-02 -1.0977E-02 1.5971E-03 -1.0170E-04 S6 -2.3333E+00 1.4574E+00 -6.5473E-01 2.0596E-01 -4.3036E-02 5.3626E-03 -3.0146E-04 S7 -5.5813E-01 4.2121E-01 -2.1894E-01 7.7429E-02 -1.7830E-02 2.4143E-03 -1.4601E-04 S8 -2.3626E-02 8.9322E-03 -2.4322E-03 4.6403E-04 -5.8785E-05 4.4347E-06 -1.5052E-07 S9 -1.2595E-03 3.0162E-04 -5.0976E-05 5.9369E-06 -4.5303E-07 2.0368E-08 -4.0862E-10 S10 -4.4787E-04 8.0635E-05 -1.0216E-05 8.9056E-07 -5.0804E-08 1.7051E-09 -2.5474E-11 S11 6.1659E-07 -4.7612E-08 2.2671E-09 -5.3402E-11 -1.4244E-13 3.6492E-14 -5.7476E-16 S12 -2.1544E-07 2.6360E-08 -2.1257E-09 1.1234E-10 -3.7397E-12 7.1137E-14 -5.8989E-16 S13 -8.2210E-07 4.3287E-08 -1.6053E-09 4.1052E-11 -6.8878E-13 6.8158E-15 -3.0076E-17 S14 4.2163E-07 -2.5056E-08 1.0499E-09 -3.0302E-11 5.7301E-13 -6.3896E-15 3.1842E-17

[0111] Table 4

[0112] Fig.14 The axial chromatic aberration curve of the camera lens of Example 2 is shown, which indicates that light of different wavelengths deviates from the focal point after passing through the camera lens. Fig.15 The chromatic aberration curve of the camera lens of Example 2 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the camera lens. Fig.16 The astigmatism curve of the imaging lens of Example 2 is shown, which indicates the meridional image curvature and the sagittal image curvature. Fig.17 The distortion curve of the camera lens of Example 2 is shown, which represents the distortion magnitude values ​​corresponding to different field angles.

[0113] according to Figures 14 to 17 It can be seen that the camera lens provided in Example 2 can achieve good imaging quality.

[0114] Example 3

[0115] like Figures 18 to 24 As shown, the camera lens of Example 3 of the present application is described. Fig.18 FIG. 4 shows a schematic diagram of the structure of the camera lens of Example 3 in the first state. Fig.19 FIG. 4 shows a schematic diagram of the structure of the camera lens of Example 3 in the second state. Fig. 20 A schematic structural diagram of the camera lens of Example 3 in the third state is shown.

[0116] like Fig.18 As shown, the camera lens includes, from the object side to the image side, a first lens E1, a first spacer P1, a second lens E2, a second spacer P2, a third lens E3, a third spacer P3, a fourth lens E4, a fourth spacer P4, a fourth auxiliary spacer P4b, a fifth lens E5, a fifth spacer P5, a sixth lens E6, a sixth spacer P6, a sixth auxiliary spacer P6b, a seventh lens E7, and a seventh spacer P7.

[0117] exist Fig.19 The second state shown in Fig.18 The first state shown is similar except that the dimensions of the spacers are slightly different.

[0118] exist Fig. 20 The third state shown in Fig.18 The first state shown is similar except that the dimensions of the spacers are slightly different.

[0119] Table 5 shows the basic structural parameter table of the camera lens of Example 3, wherein the units of the radius of curvature and thickness / distance are all millimeters (mm).

[0120]

[0121]

[0122] Table 5

[0123] Table 6 gives the cone coefficients and higher-order coefficients that can be used for each aspherical mirror surface S1-S14 in Example 3.

[0124] Face number A4 A6 A8 A10 A12 A14 A16 S1 8.6382E-04 -3.8092E-03 2.2336E-02 -7.9040E-02 1.8179E-01 -2.8514E-01 3.1420E-01 S2 -2.3457E-03 4.6705E-03 -1.7350E-02 6.0229E-02 -1.4354E-01 2.3416E-01 -2.6767E-01 S3 -1.4062E-02 5.5617E-03 -9.5339E-03 2.0402E-02 -1.5300E-02 -4.2002E-02 1.4130E-01 S4 -1.3537E-02 1.6169E-02 -9.4224E-02 4.1169E-01 -1.1911E+00 2.3810E+00 -3.3770E+00 S5 -3.1771E-03 1.5309E-02 -8.8091E-02 3.7111E-01 -1.0006E+00 1.8312E+00 -2.3311E+00 S6 -5.7366E-03 1.2091E-02 -4.6957E-02 1.3805E-01 -2.5297E-01 2.9497E-01 -1.9705E-01 S7 -3.4751E-02 2.6985E-02 -1.2972E-01 4.0421E-01 -9.2872E-01 1.5457E+00 -1.8670E+00 S8 -4.2892E-02 2.2096E-02 -2.3989E-02 -6.3949E-03 7.0427E-02 -1.3847E-01 1.6250E-01 S9 -7.5300E-02 4.3746E-02 -2.1817E-02 5.4511E-03 1.6876E-03 -2.5842E-03 1.4405E-03 S10 -9.2279E-02 4.2490E-02 -1.7475E-02 5.3085E-03 -1.0939E-03 4.3003E-04 -3.8035E-04 S11 -2.2545E-02 -3.0999E-04 2.4315E-03 -2.0612E-03 1.0412E-03 -3.4847E-04 8.1030E-05 S12 2.4885E-02 -9.1088E-03 3.0875E-03 -1.1507E-03 3.0533E-04 -4.3789E-05 6.0681E-07 S13 2.9099E-03 -2.3240E-02 2.0012E-02 -9.5797E-03 2.9717E-03 -6.3116E-04 9.4392E-05 S14 -1.0857E-02 -1.4898E-02 1.0327E-02 -3.6118E-03 8.0142E-04 -1.2166E-04 1.3103E-05 Face number A18 A20 A22 A24 A26 A28 A30 S1 -2.4716E-01 1.3941E-01 -5.5915E-02 1.5562E-02 -2.8561E-03 3.1078E-04 -1.5183E-05 S2 2.1763E-01 -1.2632E-01 5.1870E-02 -1.4692E-02 2.7246E-03 -2.9707E-04 1.4396E-05 S3 -2.0746E-01 1.8640E-01 -1.1010E-01 4.3065E-02 -1.0768E-02 1.5613E-03 -9.9961E-05 S4 3.4435E+00 -2.5293E+00 1.3248E+00 -4.8222E-01 1.1580E-01 -1.6482E-02 1.0527E-03 S5 2.0885E+00 -1.3149E+00 5.7211E-01 -1.6558E-01 2.9521E-02 -2.7487E-03 8.3025E-05 S6 3.1815E-02 7.0797E-02 -7.4875E-02 3.7903E-02 -1.1101E-02 1.8046E-03 -1.2668E-04 S7 1.6403E+00 -1.0448E+00 4.7645E-01 -1.5138E-01 3.1789E-02 -3.9631E-03 2.2205E-04 S8 -1.2918E-01 7.1974E-02 -2.8184E-02 7.6055E-03 -1.3473E-03 1.4109E-04 -6.6197E-06 S9 -5.1118E-04 1.3075E-04 -2.5542E-05 3.8019E-06 -4.0143E-07 2.6071E-08 -7.6721E-10 S10 2.1855E-04 -7.4985E-05 1.6203E-05 -2.2421E-06 1.9357E-07 -9.5251E-09 2.0448E-10 S11 -1.3373E-05 1.5754E-06 -1.3146E-07 7.5852E-09 -2.8768E-10 6.4506E-12 -6.4778E-14 S12 1.0018E-06 -2.0493E-07 2.1672E-08 -1.4007E-09 5.5711E-11 -1.2577E-12 1.2372E-14 S13 -1.0069E-05 7.6648E-07 -4.1119E-08 1.5084E-09 -3.5682E-11 4.8343E-13 -2.7805E-15 S14 -1.0187E-06 5.7414E-08 -2.3247E-09 6.5941E-11 -1.2443E-12 1.4036E-14 -7.1627E-17

[0125] Table 6

[0126] Fig. 20 The axial chromatic aberration curve of the camera lens of Example 3 is shown, which indicates that light of different wavelengths deviates from the focal point after passing through the camera lens. Fig.21 The magnification chromatic aberration curve of the camera lens of Example 3 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the camera lens. Fig. 22The astigmatism curve of the imaging lens of Example 3 is shown, which indicates the meridional image curvature and the sagittal image curvature. Fig.23 The distortion curve of the camera lens of Example 3 is shown, which represents the distortion magnitude values ​​corresponding to different field angles.

[0127] according to Figure 20 to Figure 23 It can be seen that the camera lens given in Example 3 can achieve good imaging quality.

[0128] In summary, Examples 1 to 3 satisfy the relationships shown in Table 7 respectively.

[0129] Conditional / Example 1-1 1-2 1-3 2-1 2-2 2-3 3-1 3-2 3-3 d6s / D6s-CP6 / T67 0.43 0.41 0.41 0.50 0.47 0.41 0.69 0.69 0.69 fno*(EP01 / CT1) 2.65 2.65 2.65 2.96 2.96 3.09 2.67 2.67 2.67 (f1+f2) / (CP1+EP12+CP2+EP23) -6.50 -6.44 -6.44 -10.43 -10.43 -11.05 -6.04 -6.04 -6.04 T23 / CP2+T34 / CP3 42.81 42.81 42.81 36.42 36.42 36.42 37.63 37.63 37.63 EP34 / CT4*N4 2.27 2.65 3.50 2.56 2.56 2.56 1.29 1.29 1.29 f45 / (EP45+CP5+EP56) 6.68 6.68 5.92 4.13 4.13 4.31 3.74 3.58 3.58 f6 / EP56-f7 / EP67 18.92 19.32 18.17 22.35 20.90 19.86 13.37 13.41 13.55 f7 / EP67*N7 -15.97 -16.36 -14.58 -11.82 -12.50 -11.82 -6.15 -6.20 -6.43 f / (CP5+CP6) 11.52 11.31 11.31 5.61 6.04 6.15 8.90 10.71 8.90

[0130] Table 7

[0131] Table 8 gives some parameters of the camera lenses of Examples 1 to 3.

[0132] Parameters / Examples 1-1 1-2 1-3 2-1 2-2 2-3 3-1 3-2 3-3 d6s 8.89 9.26 9.26 9.1 9.3 9.39 8.09 8.09 8.09 D6s 9.69 10.13 10.18 10.46 11.05 11.02 11.31 11.31 11.31 EP01 1.04 1.04 1.04 1.14 1.14 1.19 1.06 1.06 1.06 CP1 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 EP12 0.52 0.52 0.52 0.58 0.58 0.53 0.55 0.55 0.55 CP2 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 EP23 0.62 0.63 0.63 0.27 0.27 0.27 0.36 0.36 0.36 CP3 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 EP34 0.48 0.56 0.74 0.72 0.72 0.72 0.4 0.4 0.4 EP45 0.48 0.49 0.63 0.7 0.7 0.7 0.48 0.68 0.56 CP5 0.02 0.02 0.02 0.65 0.57 0.46 0.68 0.56 0.68 EP56 0.58 0.57 0.57 0.54 0.62 0.65 0.67 0.67 0.67 CP6 0.51 0.52 0.52 0.49 0.49 0.58 0.03 0.03 0.03 EP67 0.42 0.41 0.46 0.91 0.86 0.91 1.14 1.13 1.09

[0133] Table 8

[0134] It should be noted that 1-1 in Table 7 and Table 8 represents the first state of the camera lens in Example 1, 1-2 represents the second state of the camera lens in Example 1, and 1-3 represents the third state of the camera lens in Example 1. 2-1 represents the first state of the camera lens in Example 2, 2-2 represents the second state of the camera lens in Example 2, 2-3 represents the third state of the camera lens in Example 2, 3-1 represents the first state of the camera lens in Example 3, 3-2 represents the second state of the camera lens in Example 3, and 3-3 represents the third state of the camera lens in Example 3.

[0135] Table 9 shows the effective focal lengths of the first lens, the second optical element and the third lens of the camera lenses of Examples 1 to 3.

[0136]

[0137]

[0138] Table 9

[0139] 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 camera lens described above.

[0140] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0141] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0142] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0143] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A camera lens, characterized in that: Comprising: A lens barrel; A lens group assembled within the lens barrel, the lens group sequentially including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens from the object side to the image side; The lens group further includes a plurality of light-shielding elements, and at least the first light-shielding element to the seventh light-shielding element are included in the plurality of light-shielding elements; The first light-shielding element is located between the first lens and the second lens and is in partial contact with the image side surface of the first lens; The second light-shielding element is located between the second lens and the third lens and is in partial contact with the image side surface of the second lens; The third light-shielding element is located between the third lens and the fourth lens and is in partial contact with the image side surface of the third lens; The fourth light-shielding element is located between the fourth lens and the fifth lens and is in partial contact with the image side surface of the fourth lens; The fifth light-shielding element is located between the fifth lens and the sixth lens and is in partial contact with the image side surface of the fifth lens; The sixth light-shielding element is located between the sixth lens and the seventh lens and is in partial contact with the image side surface of the sixth lens; The seventh light-shielding element is located on the image side of the seventh lens and is in partial contact with the image side surface of the seventh lens; Wherein, the following is satisfied among the first light-shielding element, the second light-shielding element, and the third light-shielding element: CP1 = CP2 = CP3; The camera lens satisfies: 35 < T23 / CP2 + T34 / CP3 < 45, where CP1 is the maximum thickness of the first light-shielding element, CP2 is the maximum thickness of the second light-shielding element, CP3 is the maximum thickness of the third light-shielding element, T23 is the on-axis distance from the image side surface of the second lens to the object side surface of the third lens, and T34 is the on-axis distance from the image side surface of the third lens to the object side surface of the fourth lens.

2. The imaging lens according to claim 1, wherein: The camera lens satisfies: 1 < EP34 / CT4*N4 < 4, where EP34 is the on-axis distance from the image side surface of the third light-shielding element to the object side surface of the fourth light-shielding element, CT4 is the central thickness of the fourth lens, and N4 is the refractive index of the fourth lens.

3. The imaging lens according to claim 1, wherein: The camera lens satisfies: 3 < f45 / (EP45 + CP5 + EP56) < 7, where f45 is the combined focal length of the fourth lens and the fifth lens, EP45 is the on-axis distance from the image side surface of the fourth light-shielding element to the object side surface of the fifth light-shielding element, EP56 is the on-axis distance from the image side surface of the fifth light-shielding element to the object side surface of the sixth light-shielding element, and CP5 is the maximum thickness of the fifth light-shielding element.

4. The imaging lens according to claim 1, wherein: The camera lens satisfies: 10 < f6 / EP56 - f7 / EP67 < 25, where f6 is the effective focal length of the sixth lens, f7 is the effective focal length of the seventh lens, EP56 is the on-axis distance from the image side surface of the fifth light-shielding element to the object side surface of the sixth light-shielding element, and EP67 is the on-axis distance from the image side surface of the sixth light-shielding element to the object side surface of the seventh light-shielding element.

5. The imaging lens according to any one of claims 1 to 4, characterized in that: The camera lens satisfies: -20 < f7 / EP67*N7 < -5, where f7 is the effective focal length of the seventh lens, EP67 is the on-axis distance from the image side of the sixth light-shielding element to the object side of the seventh light-shielding element, and N7 is the refractive index of the seventh lens.

6. The imaging lens according to any one of claims 1 to 4, characterized in that: The camera lens satisfies: 5 < f / (CP5+CP6) < 15, where f is the focal length of the camera lens, CP5 is the maximum thickness of the fifth light-shielding element, and CP6 is the maximum thickness of the sixth light-shielding element.

7. The imaging lens according to any one of claims 1 to 4, characterized in that: The lens group further includes a fourth auxiliary light-shielding element, and the fourth auxiliary light-shielding element is located between the fourth light-shielding element and the fifth lens.

8. The camera lens according to any one of claims 1 to 4, characterized in that The lens group further includes a fifth auxiliary light-shielding element, and the fifth auxiliary light-shielding element is located between the fifth light-shielding element and the sixth lens.

9. The imaging lens according to any one of claims 1 to 4, characterized in that: The lens group further includes a sixth auxiliary light-shielding element, and the sixth auxiliary light-shielding element is located between the sixth light-shielding element and the seventh lens.

10. The imaging lens according to any one of claims 1 to 4, characterized in that: The camera lens satisfies: 2 < fno*(EP01 / CT1) < 4; where CT1 is the central thickness of the first lens, EP01 is the on-axis distance from the first light-shielding element to the object-side end face of the lens barrel, and fno is the F-number of the camera lens.

Images