Camera lens

Abstract

The application discloses a camera lens, which comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens with optical power in sequence from the object side to the image side along the optical axis, wherein the object side surface of the fourth lens is a convex surface; the object side surface of the fifth lens is a convex surface; the half of the diagonal line length of the effective pixel area on the imaging surface of the camera lens is ImgH, and ImgH satisfies ImgH>6.5mm; and the air interval T67 of the sixth lens and the seventh lens on the optical axis, and the central thickness CT2 of the second lens on the optical axis satisfy 0.5<T67 / CT2<2.5.

Description

Technical Field

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

[0002] With the rapid development of the drone industry, the demand for camera lenses mounted on drones is increasing. However, existing drone imaging lenses suffer from the following problems: ghosting is common in strong light environments, affecting image quality; blue-purple fringing occurs; their structure often uses glass lenses, resulting in bulky, heavy, and expensive lenses; and they exhibit significant temperature drift, which affects image quality when temperature fluctuations are excessive. Solving these problems and obtaining camera lenses that are both miniaturized, have a large image sensor, and offer high image quality has become a current research focus in the industry. Summary of the Invention

[0003] This application provides a camera lens comprising, along the optical axis from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens, each having optical power. The object side of the fourth lens is convex; the object side of the fifth lens is convex; half the diagonal length ImgH of the effective pixel area on the imaging plane of the camera lens satisfies: ImgH > 6.5 mm; and the air gap T67 between the sixth and seventh lenses on the optical axis and the center thickness CT2 of the second lens on the optical axis satisfy: 0.5 mm. <T67 / CT2<2.5。

[0004] In one embodiment, the air gap T23 between the second and third lenses on the optical axis and the center thickness CT2 of the second lens on the optical axis satisfy: T23 / CT2<2.5.

[0005] In one embodiment, the air gap T12 between the first and second lenses on the optical axis, the air gap T23 between the second and third lenses on the optical axis, and the sum of the air gaps ∑AT between any two adjacent lenses from the first to the seventh lens on the optical axis satisfy: (T12+T23) / ∑AT<0.8.

[0006] In one embodiment, the sum of the center thicknesses of the first to seventh lenses on the optical axis, ∑CT, the center thickness of the third lens on the optical axis, CT3, the center thickness of the fourth lens on the optical axis, and the center thickness of the fifth lens on the optical axis, CT5, satisfy the following condition: 1.5 < ∑CT / (CT3 + CT4 + CT5) < 3.0.

[0007] In one embodiment, the sum of the center thicknesses of the first to seventh lenses along the optical axis, ∑CT, and the sum of the air gaps between any two adjacent lenses along the optical axis, ∑AT, satisfy the condition: 0.5 < ∑CT / ∑AT < 2.0.

[0008] In one embodiment, the combined focal length f45 of the fourth and fifth lenses and the combined focal length f56 of the fifth and sixth lenses satisfy: 0 < |f45| / f56 < 2.0.

[0009] In one embodiment, the radius of curvature R14 of the image-side surface of the seventh lens satisfies the same condition as the radius of curvature R2 of the image-side surface of the first lens: -0.5 <R14 / R2<2.0。

[0010] In one embodiment, the distance SAG12 from the intersection of the image-side surface of the first lens and the optical axis to the vertex of the effective radius of the image-side surface of the first lens on the optical axis, and the distance SAG71 from the intersection of the object-side surface of the seventh lens and the optical axis to the vertex of the effective radius of the object-side surface of the sixth lens on the optical axis, satisfy: -1.5 <SAG12 / SAG71<0。

[0011] In one embodiment, the distance SAG51 from the intersection of the object-side surface of the fifth lens and the optical axis to the vertex of the effective radius of the object-side surface of the fifth lens on the optical axis, the distance SAG12 from the intersection of the image-side surface of the first lens and the optical axis to the vertex of the effective radius of the image-side surface of the first lens on the optical axis, and the distance SAG22 from the intersection of the image-side surface of the second lens and the optical axis to the vertex of the effective radius of the image-side surface of the second lens on the optical axis satisfy: -0.5 <SAG51 / (SAG12+SAG22)<0.5。

[0012] In one embodiment, the maximum effective radius DT61 of the object side of the sixth lens, the maximum effective radius DT62 of the image side of the sixth lens, the maximum effective radius DT71 of the object side of the seventh lens, and the maximum effective radius DT72 of the image side of the seventh lens satisfy: (DT61+DT62) / (DT71+DT72)<1.0.

[0013] In one embodiment, the maximum effective radius DT11 of the object-side surface of the first lens, the edge thickness ET1 at the maximum effective radius of the first lens, the edge thickness ET2 at the maximum effective radius of the second lens, and the edge thickness ET3 at the maximum effective radius of the third lens satisfy: 1.0 <DT11 / (ET1+ET2+ET3)<2.0。

[0014] In one embodiment, the edge thickness ET3 at the maximum effective radius of the third lens and the edge thickness ET4 at the maximum effective radius of the fourth lens satisfy: 2.1 < (ET3 + ET4) / ET4 < 4.0.

[0015] In one embodiment, the refractive index N2 of the second lens, the refractive index N3 of the third lens, and the refractive index N6 of the sixth lens satisfy: 1.5 < (N2 + N3) / N6 < 2.5.

[0016] In one embodiment, the Abbe number V1 of the first lens, the Abbe number V6 of the sixth lens, and the Abbe number V7 of the seventh lens satisfy: 1.3 < (V6 + V1) / V7 < 5.0.

[0017] In one embodiment, at least one of the first to seventh lenses is made of glass.

[0018] This application also provides a camera lens assembly comprising, along the optical axis from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens, each having optical power. The object side of the fourth lens is convex; the object side of the fifth lens is convex; half the diagonal length ImgH of the effective pixel area on the imaging surface of the camera lens satisfies: ImgH > 6.5 mm; and the radius of curvature R14 of the image side of the seventh lens satisfies -0.5 mm as the radius of curvature R2 of the image side of the first lens. <R14 / R2<2.0。

[0019] This application employs seven lenses. By rationally allocating the optical power, surface shape, center thickness of each lens, and on-axis spacing between each lens, the aforementioned camera lens achieves at least one beneficial effect, such as a large image area, high resolution, low distortion, miniaturization, and high imaging quality. Attached Figure Description

[0020] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

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

[0022] Figures 2A to 2D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the camera lens of Embodiment 1 are shown respectively.

[0023] Figure 3 A schematic diagram of the camera lens according to Embodiment 2 of this application is shown;

[0024] Figures 4A to 4D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the camera lens in Embodiment 2 are shown respectively.

[0025] Figure 5 A schematic diagram of the camera lens according to Embodiment 3 of this application is shown;

[0026] Figures 6A to 6D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the camera lens in Example 3 are shown respectively.

[0027] Figure 7 A schematic diagram of the camera lens according to Embodiment 4 of this application is shown;

[0028] Figures 8A to 8D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the camera lens in Example 4 are shown respectively.

[0029] Figure 9 A schematic diagram of the camera lens according to Embodiment 5 of this application is shown;

[0030] Figures 10A to 10D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the camera lens in Example 5 are shown respectively.

[0031] Figure 11 A schematic diagram of the structure of a camera lens according to Embodiment 6 of this application is shown;

[0032] Figures 12A to 12D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the camera lens of Example 6 are shown respectively.

[0033] Figure 13 A schematic diagram of the camera lens according to Embodiment 7 of this application is shown;

[0034] Figures 14A to 14D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the camera lens of Embodiment 7 are shown respectively.

[0035] Figure 15 A schematic diagram of the camera lens according to Embodiment 8 of this application is shown;

[0036] Figures 16A to 16D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the camera lens of Example 8 are shown respectively.

[0037] Figure 17 A schematic diagram of the structure of a camera lens according to Embodiment 9 of this application is shown; and

[0038] Figures 18A to 18D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the camera lens of Example 9 are shown respectively. Detailed Implementation

[0039] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

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

[0041] In the accompanying drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are illustrated by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not strictly to scale.

[0042] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the location of the convexity is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the location of the concaveness is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the subject is called the object-side surface of the lens, and the surface of each lens closest to the imaging plane is called the image-side surface of the lens.

[0043] It should also be understood that the terms "comprising," "including," "having," "containing," and / or "comprising," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. Furthermore, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features, not individual elements in the list. Additionally, when describing embodiments of this application, the word "may" is used to mean "one or more embodiments of this application." And the term "exemplary" is intended to refer to an example or illustration.

[0044] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms (e.g., those defined in common dictionaries) shall be interpreted as having the meaning consistent with their meaning in the context of the relevant art and shall not be interpreted in an idealized or overly formalized sense, unless expressly so specified herein.

[0045] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will describe the present application in detail with reference to the accompanying drawings and in combination with the embodiments.

[0046] The features, principles and other aspects of the present application will be described in detail below.

[0047] The camera lens according to an exemplary embodiment of the present application may include seven lenses with optical power, namely the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens. These seven lenses are arranged in sequence along the optical axis from the object side to the image side. There may be a spacing distance between any two adjacent lenses among the first lens to the seventh lens.

[0048] In the exemplary embodiment, the first lens may have positive or negative optical power; the second lens may have positive or negative optical power; the third lens may have positive or negative optical power; the fourth lens may have positive or negative optical power, and its object side surface is convex; the fifth lens may have positive or negative optical power, and its object side surface is convex; the sixth lens may have positive or negative optical power; and the seventh lens may have positive or negative optical power. Half of the diagonal length ImgH of the effective pixel region on the imaging surface of the camera lens satisfies: ImgH>6.5 mm; and the air spacing T67 between the sixth lens and the seventh lens on the optical axis and the central thickness CT2 of the second lens on the optical axis satisfy: 0.5<T67 / CT2<2.5. By reasonably adjusting the structural dimensions of the second lens, the second lens can maintain good processability, and at the same time, on the premise that the optical system has the characteristics of a large image surface, the maximum half field angle of the lens will also be increased as much as possible to ensure a better imaging effect. In addition, by reasonably controlling the positive and negative distribution of the optical power of each lens of the camera lens, the low-order aberrations of the camera lens can be effectively balanced and controlled, and the sensitivity to tolerances can be reduced, and the miniaturization of the system can be maintained.

[0049] In the exemplary embodiment, the camera lens according to the present application further includes an aperture disposed between the second lens and the third lens.

[0050] In the exemplary embodiment, the camera lens according to the present application further includes an aperture disposed between the third lens and the fourth lens.

[0051] In the exemplary embodiment, the camera lens according to the present application may satisfy: T23 / CT2<2.5, where T23 is the air spacing between the second lens and the third lens on the optical axis, and CT2 is the central thickness of the second lens on the optical axis. More specifically, T23 and CT2 may further satisfy: T23 / CT2<1.3. Satisfying T23 / CT2<2.5 is beneficial to improving the field curvature contribution amount of each field within a certain range and enhancing the imaging quality.

[0052] In an exemplary embodiment, the camera lens according to this application satisfies: (T12+T23) / ∑AT<0.8, where T12 is the air gap between the first and second lenses on the optical axis, T23 is the air gap between the second and third lenses on the optical axis, and ∑AT is the sum of the air gaps between any two adjacent lenses from the first to the seventh lens on the optical axis. More specifically, T12, T23, and ∑AT further satisfy: (T12+T23) / ∑AT<0.6. Satisfying (T12+T23) / ∑AT<0.8, by reasonably allocating the air gaps between the first and second lenses on the optical axis, is beneficial for correcting the axial aberration of the camera lens, and also meets the manufacturing requirements.

[0053] In an exemplary embodiment, the camera lens according to this application satisfies: 1.5 < ∑CT / (CT3+CT4+CT5) < 3.0, where ∑CT is the sum of the center thicknesses of the first to seventh lenses along the optical axis, CT3 is the center thickness of the third lens along the optical axis, CT4 is the center thickness of the fourth lens along the optical axis, and CT5 is the center thickness of the fifth lens along the optical axis. More specifically, ∑CT, CT3, CT4, and CT5 further satisfy: 1.9 < ∑CT / (CT3+CT4+CT5) < 2.6. Satisfying 1.5 < ∑CT / (CT3+CT4+CT5) < 3.0 is beneficial for shortening the length of the camera lens, facilitating its manufacturing, and optimizing system configuration.

[0054] In an exemplary embodiment, the camera lens according to this application satisfies: 0.5 < ∑CT / ∑AT < 2.0, where ∑CT is the sum of the center thicknesses of the first to seventh lenses along the optical axis, and ∑AT is the sum of the air gaps between any two adjacent lenses along the optical axis. More specifically, ∑CT and ∑AT can further satisfy: 1.0 < ∑CT / ∑AT < 1.7. Satisfying 0.5 < ∑CT / ∑AT < 2.0 is beneficial for the camera lens to simultaneously meet lightweight and miniaturized design requirements.

[0055] In an exemplary embodiment, the camera lens according to this application satisfies: 0 < |f45| / f56 < 2.0, where f45 is the combined focal length of the fourth and fifth lenses, and f56 is the combined focal length of the fifth and sixth lenses. More specifically, f45 and f56 further satisfy: 0.2 < |f45| / f56 < 1.8. Satisfying 0 < |f45| / f56 < 2.0 is beneficial for reasonably controlling the focal lengths of the fourth, fifth, and sixth lenses, balancing aberrations, and thus improving the imaging quality of the camera lens.

[0056] In an exemplary embodiment, the camera lens according to the present application may satisfy: -0.5 < R14 / R2 < 2.0, where R14 is the radius of curvature of the image side surface of the seventh lens, and R2 is the radius of curvature of the image side surface of the first lens. More specifically, R14 and R2 may further satisfy: -0.5 < R14 / R2 < 1.7. Satisfying -0.5 < R14 / R2 < 2.0 is conducive to reasonably controlling the deflection angle of the marginal rays of the camera lens and effectively reducing the sensitivity of the camera lens.

[0057] In an exemplary embodiment, the camera lens according to the present application may satisfy: -1.5 < SAG12 / SAG71 < 0, where SAG12 is the distance on the optical axis from the intersection of the image side surface of the first lens and the optical axis to the vertex of the effective radius of the image side surface of the first lens, and SAG71 is the distance on the optical axis from the intersection of the object side surface of the seventh lens and the optical axis to the vertex of the effective radius of the object side surface of the sixth lens. More specifically, SAG12 and SAG71 may further satisfy: -1.3 < SAG12 / SAG71 < -0.9. Satisfying -1.5 < SAG12 / SAG71 < 0 is conducive to effectively controlling the total length of the camera lens and reducing the volume.

[0058] In an exemplary embodiment, the camera lens according to the present application may satisfy: -0.5 < SAG51 / (SAG12 + SAG22) < 0.5, where SAG51 is the distance on the optical axis from the intersection of the object side surface of the fifth lens and the optical axis to the vertex of the effective radius of the object side surface of the fifth lens, SAG12 is the distance on the optical axis from the intersection of the image side surface of the first lens and the optical axis to the vertex of the effective radius of the image side surface of the first lens, and SAG22 is the distance on the optical axis from the intersection of the image side surface of the second lens and the optical axis to the vertex of the effective radius of the image side surface of the second lens. More specifically, SAG51, SAG12, and SAG22 may further satisfy: -0.3 < SAG51 / (SAG12 + SAG22) < 0.3. Satisfying -0.5 < SAG51 / (SAG12 + SAG22) < 0.5 is conducive to controlling the deflection angle of the marginal field of view in the lens and effectively reducing the sensitivity of the camera lens.

[0059] In an exemplary embodiment, the camera lens according to the present application can satisfy: (DT61 + DT62) / (DT71 + DT72) < 1.0, where DT61 is the maximum effective radius of the object side of the sixth lens, DT62 is the maximum effective radius of the image side of the sixth lens, DT71 is the maximum effective radius of the object side of the seventh lens, and DT72 is the maximum effective radius of the image side of the seventh lens. More specifically, DT61, DT62, DT71, and DT72 can further satisfy: (DT61 + DT62) / (DT71 + DT72) < 0.9. Satisfying (DT61 + DT62) / (DT71 + DT72) < 1.0 is beneficial to improving the machinability of the camera lens.

[0060] In an exemplary embodiment, the camera lens according to the present application can satisfy: 1.0 < DT11 / (ET1 + ET2 + ET3) < 2.0, where DT11 is the maximum effective radius of the object side of the first lens, ET1 is the edge thickness at the maximum effective radius of the first lens, ET2 is the edge thickness at the maximum effective radius of the second lens, and ET3 is the edge thickness at the maximum effective radius of the third lens. More specifically, DT11, ET1, ET2, and ET3 can further satisfy: 1.1 < DT11 / (ET1 + ET2 + ET3) < 1.7. Satisfying 1.0 < DT11 / (ET1 + ET2 + ET3) < 2.0 is beneficial to improving the yield rate of forming and assembling the camera lens.

[0061] In an exemplary embodiment, the camera lens according to the present application can satisfy: 2.1 < (ET3 + ET4) / ET4 < 4.0, where ET3 is the edge thickness at the maximum effective radius of the third lens, and ET4 is the edge thickness at the maximum effective radius of the fourth lens. More specifically, ET3, ET4, and ET4 can further satisfy: 2.4 < (ET3 + ET4) / ET4 < 4.0. Satisfying 2.1 < (ET3 + ET4) / ET4 < 4.0 is beneficial to balancing the field curvature and improving the yield rate of forming and assembling the camera lens.

[0062] In an exemplary embodiment, the camera lens according to the present application can satisfy: 1.5 < (N2 + N3) / N6 < 2.5, where N2 is the refractive index of the second lens, N3 is the refractive index of the third lens, and N6 is the refractive index of the sixth lens. More specifically, N2, N3, and N6 can further satisfy: 2.0 < (N2 + N3) / N6 < 2.2. Satisfying 1.5 < (N2 + N3) / N6 < 2.5 is beneficial to the smooth transition of the marginal rays of the camera lens and improving the performance of the marginal field of view.

[0063] In an exemplary embodiment, the camera lens according to this application satisfies: 1.3 < (V6 + V1) / V7 < 5.0, where V1 is the Abbe number of the first lens, V6 is the Abbe number of the sixth lens, and V7 is the Abbe number of the seventh lens. More specifically, V6, V1, and V7 further satisfy: 1.9 < (V6 + V1) / V7 < 4.9. Satisfying 1.3 < (V6 + V1) / V7 < 5.0 is beneficial for correcting chromatic aberration in the camera lens and effectively correcting purple fringing and red fringing phenomena.

[0064] In an exemplary embodiment, the effective focal length f1 of the first lens can be, for example, in the range of -24.00 mm to -18.60 mm; the effective focal length f2 of the second lens can be, for example, in the range of -61.80 mm to 17.20 mm; the effective focal length f3 of the third lens can be, for example, in the range of -23.20 mm to 10.80 mm; the effective focal length f4 of the fourth lens can be, for example, in the range of 9.90 mm to 22.30 mm; the effective focal length f5 of the fifth lens can be, for example, in the range of -15.65 mm to 45.75 mm; the effective focal length f6 of the sixth lens can be, for example, in the range of 9.70 mm to 18.90 mm; the effective focal length f7 of the seventh lens can be, for example, in the range of -10.20 mm to -8.60 mm; and the effective focal length f of the camera lens can be, for example, in the range of 7.90 mm to 9.60 mm. Half of the maximum field of view (Semi-FOV) of the camera lens can satisfy: Semi-FOV > 40.5°. The distance on the optical axis from the object surface of the first lens to the imaging surface of the camera lens can meet the TTL requirement of 19.35mm. <TTL<22.95mm。

[0065] In an exemplary embodiment, at least one of the first to seventh lenses is made of glass. The use of a mixture of glass and plastic lenses reduces temperature drift and improves image quality.

[0066] In an exemplary embodiment, the camera lens according to this application further includes a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging plane. This application proposes a camera lens with continuously variable optical power. The camera lens according to the above embodiments of this application can employ multiple lenses, such as the seven lenses mentioned above. By rationally allocating the optical power, surface shape, center thickness of each lens, and on-axis spacing between lenses, the low-order aberrations of the camera lens can be effectively balanced and controlled, while reducing its tolerance sensitivity and maintaining the miniaturization of the camera lens.

[0067] In embodiments of this application, at least one of the mirror surfaces of the first to seventh lenses is an aspherical mirror surface. An aspherical lens is characterized by a continuously changing curvature from the lens center to the lens periphery. Unlike a spherical lens, which has a constant curvature from the lens center to the lens periphery, an aspherical lens has better radius of curvature characteristics, offering advantages in improving distortion aberrations and astigmatism. By using an aspherical lens, aberrations occurring during imaging can be eliminated as much as possible, thereby improving image quality. Optionally, the object-side and image-side surfaces of each of the first to seventh lenses are aspherical mirror surfaces.

[0068] However, those skilled in the art will understand that the number of lenses constituting the camera lens can be varied to obtain the various results and advantages described herein without departing from the technical solutions claimed in this application. For example, although seven lenses are described as an example in the embodiment, the camera lens is not limited to including seven lenses. If desired, the camera lens may also include other numbers of lenses.

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

[0070] Example 1

[0071] The following is for reference Figures 1 to 2D The camera lens according to Embodiment 1 of this application is described. Figure 1 A schematic diagram of the structure of a camera lens according to Embodiment 1 of this application is shown.

[0072] like Figure 1 As shown, the camera lens, from the object side to the image side, includes, in sequence: a first lens E1, a second lens E2, an aperture stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an imaging surface S17.

[0073] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has positive optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0074] In this example, the effective focal length f of the camera lens is 9.08 mm, the effective focal length f1 of the first lens is -21.22 mm, the effective focal length f2 of the second lens is 17.11 mm, the effective focal length f3 of the third lens is -23.12 mm, the effective focal length f4 of the fourth lens is 11.36 mm, the effective focal length f5 of the fifth lens is 45.73 mm, the effective focal length f6 of the sixth lens is 18.89 mm, the effective focal length f7 of the seventh lens is -9.78 mm, the total length TTL of the camera lens (i.e., the distance on the optical axis from the object side S1 of the first lens E1 to the imaging surface S17 of the camera lens) is 22.01 mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S17 of the camera lens is 8.35 mm, and half the maximum field of view (Semi-FOV) of the camera lens is 42.66°.

[0075] Table 1 shows the basic parameters of the camera lens in Example 1, where the radius of curvature and thickness are in millimeters (mm).

[0076]

[0077] Table 1

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

[0079]

[0080] Where x is the distance vector from the vertex of the aspherical surface at a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the i-th order correction coefficient of the aspherical surface. Tables 2-1 and 2-2 below give the higher-order coefficients A4, A6, A8, A14 that can be used for each aspherical mirror S1-S14 in Example 1. 10 A 12 A 14 A 16 A 18 A 20 A 22 A 24 A 26 A 28 and A 30 .

[0081] Face number A4 A6 A8 A10 A12 A14 A16 S1 2.64E-05 4.61E-05 5.23E-06 -1.84E-06 2.53E-07 -2.17E-08 1.27E-09 S2 -6.72E-04 1.61E-04 -2.68E-05 8.96E-06 -2.51E-06 4.69E-07 -5.89E-08 S3 -1.07E-03 4.74E-05 -1.29E-06 -3.08E-08 -2.69E-10 1.32E-10 7.01E-12 S4 -8.86E-04 5.67E-05 -1.64E-06 -4.33E-07 6.78E-08 -4.77E-09 1.86E-10 S5 -5.28E-03 1.36E-04 1.07E-04 -6.40E-05 1.80E-05 -2.87E-06 2.54E-07 S6 -6.90E-03 1.12E-03 -2.11E-04 2.25E-05 1.10E-07 -3.15E-07 3.51E-08 S7 -1.46E-03 1.03E-03 -3.54E-04 1.02E-04 -2.94E-05 6.56E-06 -9.10E-07 S8 4.20E-03 -1.36E-03 1.08E-03 -7.07E-04 3.06E-04 -9.16E-05 1.97E-05 S9 1.04E-03 -1.31E-04 -5.60E-05 1.31E-05 -1.58E-06 1.21E-07 -5.53E-09 S10 -4.33E-03 3.90E-04 -3.49E-05 -5.04E-07 3.04E-07 -2.29E-08 8.26E-10 S11 -9.28E-04 9.97E-04 -9.86E-04 4.61E-04 -1.35E-04 2.67E-05 -3.73E-06 S12 2.05E-03 -3.23E-04 -1.92E-04 1.27E-04 -3.84E-05 7.25E-06 -9.31E-07 S13 7.79E-03 -7.89E-03 2.85E-03 -6.66E-04 1.06E-04 -1.18E-05 8.98E-07 S14 1.60E-02 -8.54E-03 2.14E-03 -3.42E-04 3.74E-05 -2.90E-06 1.63E-07

[0082] Table 2-1

[0083] Face number A18 A20 A22 A24 A26 A28 A30 S1 -5.22E-11 1.53E-12 -3.20E-14 4.64E-16 -4.44E-18 2.53E-20 -6.47E-23 S2 5.09E-09 -3.07E-10 1.30E-11 -3.76E-13 7.13E-15 -7.99E-17 4.01E-19 S3 -7.05E-13 1.31E-14 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S4 -3.94E-12 3.60E-14 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S5 -1.09E-08 1.40E-10 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S6 -1.65E-09 2.86E-11 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S7 5.41E-08 4.47E-09 -1.24E-09 1.21E-10 -6.45E-12 1.88E-13 -2.34E-15 S8 -3.05E-06 3.44E-07 -2.77E-08 1.56E-09 -5.81E-11 1.29E-12 -1.29E-14 S9 1.39E-10 -1.46E-12 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S10 -1.52E-11 1.33E-13 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S11 3.73E-07 -2.69E-08 1.38E-09 -4.95E-11 1.17E-12 -1.65E-14 1.04E-16 S12 8.43E-08 -5.45E-09 2.50E-10 -7.93E-12 1.66E-13 -2.07E-15 1.16E-17 S13 -4.53E-08 1.30E-09 -3.85E-12 -1.26E-12 5.02E-14 -8.77E-16 6.16E-18 S14 -6.67E-09 2.00E-10 -4.32E-12 6.58E-14 -6.69E-16 4.06E-18 -1.12E-20

[0084] Table 2-2

[0085] Figure 2A The on-axis chromatic aberration curve of the camera lens of Embodiment 1 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 2B The astigmatism curve of the camera lens of Embodiment 1 is shown, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 2C The distortion curve of the camera lens in Example 1 is shown, which represents the distortion magnitude value corresponding to different field of view angles. Figure 2D The magnification chromatic aberration curve of the camera lens of Embodiment 1 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 2A to 2D It can be seen that the camera lens given in Example 1 can achieve good imaging quality.

[0086] Example 2

[0087] The following is for reference Figures 3 to 4D A camera lens according to Embodiment 2 of this application is described. In this embodiment and the following embodiments, for the sake of brevity, descriptions similar to those in Embodiment 1 will be omitted. Figure 3 A schematic diagram of the structure of a camera lens according to Embodiment 2 of this application is shown.

[0088] like Figure 3 As shown, the camera lens includes, in order from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, an aperture stop STO, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an imaging surface S17.

[0089] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being concave and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being convex. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0090] In this example, the effective focal length f of the camera lens is 9.55mm, the effective focal length f1 of the first lens is -22.39mm, the effective focal length f2 of the second lens is -59.50mm, the effective focal length f3 of the third lens is 9.87mm, the effective focal length f4 of the fourth lens is 22.28mm, the effective focal length f5 of the fifth lens is -15.30mm, the effective focal length f6 of the sixth lens is 11.66mm, the effective focal length f7 of the seventh lens is -9.78mm, the total length TTL of the camera lens (i.e., the distance on the optical axis from the object side S1 of the first lens E1 to the imaging surface S17 of the camera lens) is 22.00mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S17 of the camera lens is 8.30mm, and half the maximum field of view (Semi-FOV) of the camera lens is 40.51°.

[0091] Table 3 shows the basic parameters of the camera lens in Example 2, where the radius of curvature and thickness are in millimeters (mm). Tables 4-1 and 4-2 show the higher-order coefficients that can be used for each aspherical mirror in Example 2, where each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0092]

[0093]

[0094] Table 3

[0095] Face number A4 A6 A8 A10 A12 A14 A16 S3 4.64E-04 -1.60E-05 -5.61E-06 7.98E-07 -6.50E-08 3.33E-09 -9.78E-11 S4 1.35E-03 -5.26E-05 -4.02E-06 6.17E-07 -5.07E-08 2.58E-09 -5.99E-11 S5 -1.59E-04 -5.05E-05 -2.60E-06 3.99E-07 -4.56E-08 2.59E-09 -5.39E-11 S6 -2.24E-04 7.34E-06 4.82E-07 -2.98E-07 2.92E-08 -1.03E-09 1.25E-11 S7 1.54E-04 3.57E-05 -4.89E-08 1.13E-07 -3.06E-08 2.86E-09 -5.70E-11 S8 -2.61E-03 6.74E-05 -1.90E-05 3.06E-06 -3.55E-07 2.50E-08 -6.73E-10 S9 -6.07E-03 3.40E-04 -1.30E-04 2.67E-05 -3.22E-06 1.90E-07 -1.45E-09 S10 -4.17E-03 1.14E-03 -2.56E-04 3.70E-05 -3.03E-06 9.64E-08 3.95E-09 S11 -3.62E-03 1.53E-03 -3.18E-04 4.03E-05 -3.17E-06 1.40E-07 -2.57E-09 S12 -2.47E-03 2.01E-04 -1.11E-05 -1.14E-06 2.29E-07 -1.52E-08 3.75E-10 S13 -8.95E-03 4.56E-04 -5.90E-05 9.32E-06 -1.18E-06 9.03E-08 -3.78E-09 S14 -5.27E-03 3.92E-04 -2.43E-05 1.14E-06 -3.90E-08 9.27E-10 -1.44E-11

[0096] Table 4-1

[0097] Face number A18 A20 A22 A24 A26 A28 A30 S3 1.43E-12 -7.35E-15 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S4 1.30E-13 9.66E-15 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S5 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S6 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S7 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S8 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S9 -2.85E-10 6.40E-12 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S10 -3.86E-10 7.98E-12 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S11 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S12 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S13 6.68E-11 9.60E-15 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S14 1.31E-13 -5.32E-16 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

[0098] Table 4-2

[0099] Figure 4A The on-axis chromatic aberration curve of the camera lens of Embodiment 2 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 4B The astigmatism curve of the camera lens of Embodiment 2 is shown, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 4C The distortion curve of the camera lens in Example 2 is shown, which represents the distortion magnitude value corresponding to different field of view angles. Figure 4D The magnification chromatic aberration curve of the camera lens in Embodiment 2 is shown, representing the deviation of different image heights on the imaging plane after light passes through the lens. According to... Figures 4A to 4D It can be seen that the camera lens given in Example 2 can achieve good imaging quality.

[0100] Example 3

[0101] The following is for reference Figures 5 to 6D A camera lens according to Embodiment 3 of this application is described. Figure 5 A schematic diagram of the structure of a camera lens according to Embodiment 3 of this application is shown.

[0102] like Figure 5 As shown, the camera lens includes, in order from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, an aperture stop STO, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an imaging surface S17.

[0103] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being concave and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being convex. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0104] In this example, the effective focal length f of the camera lens is 9.46 mm, the effective focal length f1 of the first lens is -23.20 mm, the effective focal length f2 of the second lens is -61.78 mm, the effective focal length f3 of the third lens is 10.43 mm, the effective focal length f4 of the fourth lens is 21.12 mm, the effective focal length f5 of the fifth lens is -15.62 mm, the effective focal length f6 of the sixth lens is 11.30 mm, the effective focal length f7 of the seventh lens is -9.77 mm, the total length TTL of the camera lens (i.e., the distance on the optical axis from the object side S1 of the first lens E1 to the imaging surface S17 of the camera lens) is 22.00 mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S17 of the camera lens is 8.30 mm, and half the maximum field of view (Semi-FOV) of the camera lens is 42.47°.

[0105] Table 5 shows the basic parameters of the camera lens in Example 3, where the radius of curvature and thickness are in millimeters (mm). Tables 6-1 and 6-2 show the higher-order coefficients that can be used for each aspherical mirror in Example 3, where each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0106]

[0107]

[0108] Table 5

[0109] Face number A4 A6 A8 A10 A12 A14 A16 S1 2.37E-04 1.72E-05 -2.73E-06 1.63E-07 -7.51E-09 2.44E-10 -4.83E-12 S2 2.94E-04 4.18E-05 -4.38E-06 1.39E-07 3.10E-09 -1.06E-09 6.71E-11 S3 -2.42E-04 1.55E-04 -1.85E-05 1.14E-06 -5.35E-08 2.14E-09 -5.90E-11 S4 2.05E-04 1.89E-04 -2.79E-05 1.85E-06 -8.85E-08 3.61E-09 -1.07E-10 S5 -5.09E-04 6.79E-05 -2.01E-05 2.11E-06 -1.56E-07 6.35E-09 -1.02E-10 S6 3.82E-05 1.55E-05 5.19E-07 -4.02E-07 3.16E-08 -8.42E-10 1.08E-11 S7 4.75E-04 7.13E-05 -6.72E-06 1.20E-06 -1.68E-07 1.34E-08 -3.76E-10 S8 -3.00E-03 1.73E-04 -4.67E-05 9.41E-06 -1.26E-06 9.51E-08 -2.85E-09 S9 -6.74E-03 1.61E-04 -1.18E-04 3.72E-05 -6.92E-06 8.35E-07 -6.72E-08 S10 -5.16E-03 1.53E-03 -4.33E-04 8.66E-05 -1.15E-05 1.02E-06 -5.79E-08 S11 -1.82E-03 1.28E-03 -3.07E-04 4.25E-05 -3.59E-06 1.70E-07 -3.44E-09 S12 -3.03E-03 2.85E-04 -2.76E-05 1.16E-06 4.73E-08 -7.11E-09 2.37E-10 S13 -1.11E-02 2.62E-03 -2.00E-03 1.06E-03 -3.77E-04 9.26E-05 -1.62E-05 S14 -4.87E-03 4.44E-05 9.32E-05 -2.26E-05 3.12E-06 -2.90E-07 1.91E-08

[0110] Table 6-1

[0111] Face number A18 A20 A22 A24 A26 A28 A30 S1 5.16E-14 -2.27E-16 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S2 -1.76E-12 1.68E-14 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S3 8.37E-13 -3.87E-15 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S4 1.78E-12 -1.15E-14 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S5 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S6 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S7 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S8 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S9 3.61E-09 -9.89E-11 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S10 2.00E-09 -3.30E-11 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S11 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S12 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S13 2.04E-06 -1.85E-07 1.21E-08 -5.47E-10 1.64E-11 -2.93E-13 2.35E-15 S14 -9.10E-10 3.13E-11 -7.73E-13 1.33E-14 -1.52E-16 1.03E-18 -3.16E-21

[0112] Table 6-2

[0113] Figure 6A The on-axis chromatic aberration curve of the camera lens of Embodiment 3 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 6B The astigmatism curve of the camera lens of Embodiment 3 is shown, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 6C The distortion curve of the camera lens in Example 3 is shown, which represents the distortion magnitude value corresponding to different field of view angles. Figure 6D The magnification chromatic aberration curve of the camera lens in Embodiment 3 is shown, representing the deviation of different image heights on the imaging plane after light passes through the lens. According to... Figures 6A to 6D It can be seen that the camera lens given in Example 3 can achieve good imaging quality.

[0114] Example 4

[0115] The following is for reference Figures 7 to 8D A camera lens according to Embodiment 4 of this application is described. Figure 7 A schematic diagram of the structure of a camera lens according to Embodiment 4 of this application is shown.

[0116] like Figure 7 As shown, the camera lens includes, in order from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, an aperture stop STO, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an imaging surface S17.

[0117] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being concave and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being convex. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged on the imaging surface S17.

[0118] In this example, the effective focal length f of the camera lens is 9.08 mm, the effective focal length f1 of the first lens is -23.97 mm, the effective focal length f2 of the second lens is -41.51 mm, the effective focal length f3 of the third lens is 10.45 mm, the effective focal length f4 of the fourth lens is 14.54 mm, the effective focal length f5 of the fifth lens is -13.64 mm, the effective focal length f6 of the sixth lens is 11.40 mm, the effective focal length f7 of the seventh lens is -10.18 mm, the total length TTL of the camera lens (i.e., the distance on the optical axis from the object side S1 of the first lens E1 to the imaging surface S17 of the camera lens) is 22.00 mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S17 of the camera lens is 8.19 mm, and half the maximum field of view (Semi-FOV) of the camera lens is 42.47°.

[0119] Table 7 shows the basic parameters of the camera lens in Example 4, where the radius of curvature and thickness are in millimeters (mm). Tables 8-1 and 8-2 show the higher-order coefficients that can be used for each aspherical mirror in Example 4, where each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0120]

[0121]

[0122] Table 7

[0123] Face number A4 A6 A8 A10 A12 A14 A16 S1 1.13E-03 -4.55E-05 -8.89E-06 2.40E-06 -3.47E-07 3.33E-08 -2.25E-09 S2 1.62E-03 -3.42E-05 -3.28E-05 1.13E-05 -2.32E-06 3.23E-07 -3.16E-08 S3 7.77E-05 -2.77E-05 1.62E-05 -2.66E-06 2.30E-07 -1.19E-08 3.78E-10 S4 -2.94E-03 8.25E-04 -1.26E-04 1.18E-05 -6.91E-07 2.55E-08 -5.98E-10 S5 -3.91E-03 8.57E-04 -1.46E-04 1.38E-05 -7.58E-07 2.26E-08 -2.82E-10 S6 7.06E-04 -9.37E-05 3.41E-06 -2.86E-08 1.31E-08 -1.28E-09 4.88E-11 S7 1.98E-03 -1.12E-04 1.26E-05 -2.13E-06 3.74E-07 -3.61E-08 1.41E-09 S8 -4.11E-04 -2.07E-04 4.52E-05 -1.23E-05 1.97E-06 -1.67E-07 5.90E-09 S9 -9.89E-03 7.91E-04 -4.36E-04 1.65E-04 -3.99E-05 6.23E-06 -6.16E-07 S10 -4.62E-03 1.51E-03 -6.21E-04 1.53E-04 -2.16E-05 1.88E-06 -1.02E-07 S11 -2.52E-03 2.21E-03 -9.59E-04 2.52E-04 -1.69E-05 -1.98E-05 1.05E-05 S12 -5.84E-03 1.00E-03 -2.67E-04 8.48E-05 -1.89E-05 1.24E-06 6.82E-07 S13 -1.54E-02 1.94E-03 -9.28E-04 4.25E-04 -1.38E-04 3.17E-05 -5.26E-06 S14 -3.58E-03 4.22E-06 4.89E-05 -9.94E-06 1.25E-06 -1.11E-07 7.23E-09

[0124] Table 8-1

[0125]

[0126]

[0127] Table 8-2

[0128] Figure 8A The on-axis chromatic aberration curve of the camera lens of Embodiment 4 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 8B The astigmatism curve of the camera lens of Embodiment 4 is shown, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 8C The distortion curve of the camera lens in Example 4 is shown, which represents the distortion magnitude value corresponding to different field of view angles. Figure 8D The magnification chromatic aberration curve of the camera lens in Embodiment 4 is shown, representing the deviation of different image heights on the imaging plane after light passes through the lens. According to... Figures 8A to 8D It can be seen that the camera lens given in Example 4 can achieve good imaging quality.

[0129] Example 5

[0130] The following is for reference Figures 9 to 10D A camera lens according to Embodiment 5 of this application is described. Figure 9 A schematic diagram of the structure of a camera lens according to Embodiment 5 of this application is shown.

[0131] like Figure 9 As shown, the camera lens includes, in order from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, an aperture stop STO, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an imaging surface S17.

[0132] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being concave and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being convex. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged on the imaging surface S17.

[0133] In this example, the effective focal length f of the camera lens is 8.90mm, the effective focal length f1 of the first lens is -23.02mm, the effective focal length f2 of the second lens is -34.33mm, the effective focal length f3 of the third lens is 10.79mm, the effective focal length f4 of the fourth lens is 13.62mm, the effective focal length f5 of the fifth lens is -12.48mm, the effective focal length f6 of the sixth lens is 9.73mm, the effective focal length f7 of the seventh lens is -10.14mm, the total length TTL of the camera lens (i.e., the distance on the optical axis from the object side S1 of the first lens E1 to the imaging surface S17 of the camera lens) is 22.94mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S17 of the camera lens is 8.30mm, and half the maximum field of view (Semi-FOV) of the camera lens is 42.37°.

[0134] Table 9 shows the basic parameters of the camera lens of Example 5, where the radius of curvature and thickness are in millimeters (mm). Tables 10-1 and 10-2 show the higher-order coefficients that can be used for each aspherical mirror in Example 5, where each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0135]

[0136]

[0137] Table 9

[0138] Face number A4 A6 A8 A10 A12 A14 A16 S1 -2.26E-04 1.06E-04 -1.38E-05 1.57E-06 -1.46E-07 1.02E-08 -5.30E-10 S2 -4.70E-04 8.97E-05 3.37E-05 -1.62E-05 3.89E-06 -6.11E-07 6.68E-08 S3 -1.37E-03 7.13E-04 -1.41E-04 2.19E-05 -3.09E-06 3.85E-07 -3.94E-08 S4 -1.29E-02 7.45E-03 -2.66E-03 6.88E-04 -1.32E-04 1.89E-05 -2.02E-06 S5 -1.49E-02 7.89E-03 -3.07E-03 8.45E-04 -1.70E-04 2.54E-05 -2.84E-06 S6 -5.52E-04 -2.90E-04 1.67E-04 -6.42E-05 1.73E-05 -3.33E-06 4.60E-07 S7 5.26E-04 -4.62E-04 9.85E-04 -1.08E-03 7.85E-04 -3.93E-04 1.40E-04 S8 -1.68E-03 -1.97E-03 3.07E-03 -2.80E-03 1.73E-03 -7.58E-04 2.40E-04 S9 -1.61E-02 7.45E-03 -8.00E-03 6.39E-03 -3.63E-03 1.48E-03 -4.42E-04 S10 -1.03E-02 8.26E-03 -5.89E-03 3.15E-03 -1.26E-03 3.81E-04 -8.72E-05 S11 -3.33E-03 4.64E-03 -3.09E-03 1.48E-03 -5.26E-04 1.41E-04 -2.83E-05 S12 -4.97E-03 3.16E-04 3.66E-04 -2.55E-04 9.31E-05 -2.21E-05 3.59E-06 S13 -1.71E-02 1.43E-03 -8.40E-04 5.11E-04 -1.88E-04 4.48E-05 -7.32E-06 S14 -1.10E-02 9.45E-04 3.77E-05 -3.19E-05 6.15E-06 -7.24E-07 5.89E-08

[0139] Table 10-1

[0140]

[0141]

[0142] Table 10-2

[0143] Figure 10A The on-axis chromatic aberration curve of the camera lens of Embodiment 5 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 10B The astigmatism curve of the camera lens of Embodiment 5 is shown, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 10C The distortion curve of the camera lens in Example 5 is shown, which represents the distortion magnitude value corresponding to different field of view angles. Figure 10D The magnification chromatic aberration curve of the camera lens in Embodiment 5 is shown, representing the deviation of different image heights on the imaging plane after light passes through the lens. According to... Figures 10A to 10D It can be seen that the camera lens given in Example 5 can achieve good imaging quality.

[0144] Example 6

[0145] The following is for reference Figures 11 to 12D A camera lens according to Embodiment 6 of this application is described. Figure 11 A schematic diagram of the structure of a camera lens according to Embodiment 6 of this application is shown.

[0146] like Figure 11 As shown, the camera lens, from the object side to the image side, includes, in sequence: a first lens E1, a second lens E2, an aperture stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an imaging surface S17.

[0147] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has positive optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0148] In this example, the effective focal length f of the camera lens is 9.05mm, the effective focal length f1 of the first lens of the camera lens is -21.14mm, the effective focal length f2 of the second lens is 17.04mm, the effective focal length f3 of the third lens is -23.03mm, the effective focal length f4 of the fourth lens is 11.31mm, the effective focal length f5 of the fifth lens is 45.55mm, the effective focal length f6 of the sixth lens is 18.81mm, the effective focal length f7 of the seventh lens is -9.75mm, the total length TTL of the camera lens (i.e., the distance on the optical axis from the object side S1 of the first lens E1 to the imaging surface S17 of the camera lens) is 21.92mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S17 of the camera lens is 8.35mm, and half the maximum field of view (Semi-FOV) of the camera lens is 42.66°.

[0149] Table 11 shows the basic parameters of the camera lens of Example 6, where the radius of curvature and thickness are in millimeters (mm). Tables 12-1 and 12-2 show the higher-order coefficients that can be used for each aspherical mirror in Example 6, where each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0150]

[0151]

[0152] Table 11

[0153] Face number A4 A6 A8 A10 A12 A14 A16 S1 2.64E-05 4.61E-05 5.23E-06 -1.84E-06 2.53E-07 -2.17E-08 1.27E-09 S2 -6.72E-04 1.61E-04 -2.68E-05 8.96E-06 -2.51E-06 4.69E-07 -5.89E-08 S3 -1.07E-03 4.74E-05 -1.29E-06 -3.08E-08 -2.69E-10 1.32E-10 7.01E-12 S4 -8.86E-04 5.67E-05 -1.64E-06 -4.33E-07 6.78E-08 -4.77E-09 1.86E-10 S5 -5.28E-03 1.36E-04 1.07E-04 -6.40E-05 1.80E-05 -2.87E-06 2.54E-07 S6 -6.90E-03 1.12E-03 -2.11E-04 2.25E-05 1.10E-07 -3.15E-07 3.51E-08 S7 -1.46E-03 1.03E-03 -3.54E-04 1.02E-04 -2.94E-05 6.56E-06 -9.10E-07 S8 4.20E-03 -1.36E-03 1.08E-03 -7.07E-04 3.06E-04 -9.16E-05 1.97E-05 S9 1.04E-03 -1.31E-04 -5.60E-05 1.31E-05 -1.58E-06 1.21E-07 -5.53E-09 S10 -4.33E-03 3.90E-04 -3.49E-05 -5.04E-07 3.04E-07 -2.29E-08 8.26E-10 S11 -9.28E-04 9.97E-04 -9.86E-04 4.61E-04 -1.35E-04 2.67E-05 -3.73E-06 S12 2.05E-03 -3.23E-04 -1.92E-04 1.27E-04 -3.84E-05 7.25E-06 -9.31E-07 S13 7.79E-03 -7.89E-03 2.85E-03 -6.66E-04 1.06E-04 -1.18E-05 8.98E-07 S14 1.60E-02 -8.54E-03 2.14E-03 -3.42E-04 3.74E-05 -2.90E-06 1.63E-07

[0154] Table 12-1

[0155]

[0156]

[0157] Table 12-2

[0158] Figure 12A The on-axis chromatic aberration curve of the camera lens of Embodiment 6 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 12B The astigmatism curve of the camera lens of Embodiment 6 is shown, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 12C The distortion curve of the camera lens in Example 6 is shown, which represents the distortion magnitude value corresponding to different field of view angles. Figure 12D The magnification chromatic aberration curve of the camera lens of Embodiment 6 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 12A to 12D It can be seen that the camera lens given in Example 6 can achieve good imaging quality.

[0159] Example 7

[0160] The following is for reference Figures 13 to 14D A camera lens according to Embodiment 7 of this application is described. Figure 13 A schematic diagram of the structure of a camera lens according to Embodiment 7 of this application is shown.

[0161] like Figure 13 As shown, the camera lens includes, in order from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, an aperture stop STO, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an imaging surface S17.

[0162] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being concave and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being convex. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0163] In this example, the effective focal length f of the camera lens is 9.50mm, the effective focal length f1 of the first lens is -22.28mm, the effective focal length f2 of the second lens is -59.20mm, the effective focal length f3 of the third lens is 9.82mm, the effective focal length f4 of the fourth lens is 22.17mm, the effective focal length f5 of the fifth lens is -15.22mm, the effective focal length f6 of the sixth lens is 11.61mm, the effective focal length f7 of the seventh lens is -9.74mm, the total length TTL of the camera lens (i.e., the distance on the optical axis from the object side S1 of the first lens E1 to the imaging surface S17 of the camera lens) is 21.89mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S17 of the camera lens is 8.25mm, and half the maximum field of view (Semi-FOV) of the camera lens is 42.51°.

[0164] Table 13 shows the basic parameters of the camera lens of Example 7, where the radius of curvature and thickness are in millimeters (mm). Tables 14-1 and 14-2 show the higher-order coefficients that can be used for each aspherical mirror in Example 7, where each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0165]

[0166] Table 13

[0167] Face number A4 A6 A8 A10 A12 A14 A16 S3 4.64E-04 -1.60E-05 -5.61E-06 7.98E-07 -6.50E-08 3.33E-09 -9.78E-11 S4 1.35E-03 -5.26E-05 -4.02E-06 6.17E-07 -5.07E-08 2.58E-09 -5.99E-11 S5 -1.62E-04 -5.18E-05 -2.69E-06 4.17E-07 -4.82E-08 2.77E-09 -5.81E-11 S6 -2.27E-04 7.53E-06 4.99E-07 -3.12E-07 3.09E-08 -1.10E-09 1.35E-11 S7 1.56E-04 3.66E-05 -5.06E-08 1.18E-07 -3.23E-08 3.05E-09 -6.14E-11 S8 -2.65E-03 6.91E-05 -1.97E-05 3.20E-06 -3.75E-07 2.67E-08 -7.26E-10 S9 -6.07E-03 3.40E-04 -1.30E-04 2.67E-05 -3.22E-06 1.90E-07 -1.45E-09 S10 -4.17E-03 1.14E-03 -2.56E-04 3.70E-05 -3.03E-06 9.64E-08 3.95E-09 S11 -3.67E-03 1.57E-03 -3.30E-04 4.21E-05 -3.35E-06 1.49E-07 -2.77E-09 S12 -2.51E-03 2.06E-04 -1.15E-05 -1.19E-06 2.42E-07 -1.63E-08 4.05E-10 S13 -8.95E-03 4.56E-04 -5.90E-05 9.32E-06 -1.18E-06 9.03E-08 -3.78E-09 S14 -5.27E-03 3.92E-04 -2.43E-05 1.14E-06 -3.90E-08 9.27E-10 -1.44E-11

[0168] Table 14-1

[0169]

[0170]

[0171] Table 14-2

[0172] Figure 14A The on-axis chromatic aberration curve of the camera lens of Embodiment 7 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 14B The astigmatism curve of the camera lens of Embodiment 7 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 14C The distortion curve of the camera lens in Example 7 is shown, which represents the distortion magnitude value corresponding to different field of view angles. Figure 14D The magnification chromatic aberration curve of the camera lens in Embodiment 7 is shown, representing the deviation of different image heights on the imaging plane after light passes through the lens. According to... Figures 14A to 14D It can be seen that the camera lens given in Example 7 can achieve good imaging quality.

[0173] Example 8

[0174] The following is for reference Figures 15 to 16D A camera lens according to Embodiment 8 of this application is described. Figure 15 A schematic diagram of the structure of a camera lens according to Embodiment 8 of this application is shown.

[0175] like Figure 15 As shown, the camera lens includes, in order from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, an aperture stop STO, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an imaging surface S17.

[0176] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being concave and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being convex. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0177] In this example, the effective focal length f of the camera lens is 9.46 mm, the effective focal length f1 of the first lens is -23.20 mm, the effective focal length f2 of the second lens is -61.78 mm, the effective focal length f3 of the third lens is 10.43 mm, the effective focal length f4 of the fourth lens is 21.06 mm, the effective focal length f5 of the fifth lens is -15.58 mm, the effective focal length f6 of the sixth lens is 11.27 mm, the effective focal length f7 of the seventh lens is -9.74 mm, the total length TTL of the camera lens (i.e., the distance on the optical axis from the object side S1 of the first lens E1 to the imaging surface S17 of the camera lens) is 21.97 mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S17 of the camera lens is 8.27 mm, and half the maximum field of view (Semi-FOV) of the camera lens is 42.47°.

[0178] Table 15 shows the basic parameters of the camera lens of Example 8, where the radius of curvature and thickness are in millimeters (mm). Tables 16-1 and 16-2 show the higher-order coefficients that can be used for each aspherical mirror in Example 8, where each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0179]

[0180] Table 15

[0181] Face number A4 A6 A8 A10 A12 A14 A16 S1 2.37E-04 1.72E-05 -2.73E-06 1.63E-07 -7.51E-09 2.44E-10 -4.83E-12 S2 2.94E-04 4.18E-05 -4.38E-06 1.39E-07 3.10E-09 -1.06E-09 6.71E-11 S3 -2.42E-04 1.55E-04 -1.85E-05 1.14E-06 -5.35E-08 2.14E-09 -5.90E-11 S4 2.05E-04 1.89E-04 -2.79E-05 1.85E-06 -8.85E-08 3.61E-09 -1.07E-10 S5 -5.09E-04 6.79E-05 -2.01E-05 2.11E-06 -1.56E-07 6.35E-09 -1.02E-10 S6 3.82E-05 1.55E-05 5.19E-07 -4.02E-07 3.16E-08 -8.42E-10 1.08E-11 S7 4.80E-04 7.23E-05 -6.86E-06 1.24E-06 -1.73E-07 1.39E-08 -3.93E-10 S8 -3.02E-03 1.75E-04 -4.77E-05 9.67E-06 -1.30E-06 9.89E-08 -2.98E-09 S9 -6.74E-03 1.61E-04 -1.18E-04 3.72E-05 -6.92E-06 8.35E-07 -6.72E-08 S10 -5.16E-03 1.53E-03 -4.33E-04 8.66E-05 -1.15E-05 1.02E-06 -5.79E-08 S11 -1.84E-03 1.30E-03 -3.13E-04 4.37E-05 -3.71E-06 1.77E-07 -3.60E-09 S12 -3.06E-03 2.89E-04 -2.81E-05 1.19E-06 4.88E-08 -7.39E-09 2.48E-10 S13 -1.11E-02 2.62E-03 -2.00E-03 1.06E-03 -3.77E-04 9.26E-05 -1.62E-05 S14 -4.87E-03 4.44E-05 9.32E-05 -2.26E-05 3.12E-06 -2.90E-07 1.91E-08

[0182] Table 16-1

[0183]

[0184]

[0185] Table 16-2

[0186] Figure 16A The on-axis chromatic aberration curve of the camera lens of Embodiment 8 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 16B The astigmatism curve of the camera lens of Embodiment 8 is shown, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 16C The distortion curve of the camera lens in Example 8 is shown, which represents the distortion magnitude value corresponding to different field of view angles. Figure 16D The magnification chromatic aberration curve of the camera lens of Embodiment 8 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 16A to 16D It can be seen that the camera lens given in Example 8 can achieve good imaging quality.

[0187] Example 9

[0188] The following is for reference Figures 17 to 18D A camera lens according to Embodiment 9 of this application is described. Figure 17 A schematic diagram of the structure of a camera lens according to Embodiment 9 of this application is shown.

[0189] like Figure 17 As shown, the camera lens, from the object side to the image side, includes, in sequence: a first lens E1, a second lens E2, an aperture stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an imaging surface S17.

[0190] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has positive optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0191] In this example, the effective focal length f of the camera lens is 7.99 mm, the effective focal length f1 of the first lens is -18.67 mm, the effective focal length f2 of the second lens is 15.06 mm, the effective focal length f3 of the third lens is -20.35 mm, the effective focal length f4 of the fourth lens is 9.99 mm, the effective focal length f5 of the fifth lens is 40.24 mm, the effective focal length f6 of the sixth lens is 16.62 mm, the effective focal length f7 of the seventh lens is -8.61 mm, the total length TTL of the camera lens (i.e., the distance on the optical axis from the object side S1 of the first lens E1 to the imaging surface S17 of the camera lens) is 19.36 mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S17 of the camera lens is 7.34 mm, and half the maximum field of view (Semi-FOV) of the camera lens is 42.66°.

[0192] Table 17 shows the basic parameters of the camera lens of Embodiment 9, where the radius of curvature and thickness are in millimeters (mm). Tables 18-1 and 18-2 show the higher-order coefficients that can be used for each aspherical mirror in Embodiment 9, where each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0193]

[0194] Table 17

[0195] Face number A4 A6 A8 A10 A12 A14 A16 S1 2.32E-05 4.04E-05 4.59E-06 -1.61E-06 2.22E-07 -1.90E-08 1.11E-09 S2 -5.90E-04 1.41E-04 -2.35E-05 7.86E-06 -2.20E-06 4.12E-07 -5.17E-08 S3 -9.38E-04 4.17E-05 -1.14E-06 -2.71E-08 -2.37E-10 1.16E-10 6.17E-12 S4 -7.79E-04 4.99E-05 -1.44E-06 -3.81E-07 5.97E-08 -4.20E-09 1.64E-10 S5 -4.63E-03 1.20E-04 9.37E-05 -5.62E-05 1.58E-05 -2.52E-06 2.23E-07 S6 -6.06E-03 9.82E-04 -1.85E-04 1.98E-05 9.63E-08 -2.76E-07 3.08E-08 S7 -1.29E-03 9.07E-04 -3.11E-04 8.99E-05 -2.58E-05 5.76E-06 -7.99E-07 S8 3.69E-03 -1.19E-03 9.45E-04 -6.20E-04 2.68E-04 -8.04E-05 1.73E-05 S9 9.14E-04 -1.15E-04 -4.91E-05 1.15E-05 -1.39E-06 1.06E-07 -4.85E-09 S10 -3.80E-03 3.42E-04 -3.06E-05 -4.42E-07 2.67E-07 -2.01E-08 7.26E-10 S11 -8.15E-04 8.75E-04 -8.65E-04 4.05E-04 -1.18E-04 2.35E-05 -3.27E-06 S12 1.80E-03 -2.83E-04 -1.68E-04 1.12E-04 -3.37E-05 6.36E-06 -8.17E-07 S13 6.84E-03 -6.93E-03 2.50E-03 -5.84E-04 9.34E-05 -1.03E-05 7.89E-07 S14 1.40E-02 -7.50E-03 1.88E-03 -3.00E-04 3.29E-05 -2.55E-06 1.43E-07

[0196] Table 18-1

[0197] Face number A18 A20 A22 A24 A26 A28 A30 S1 -4.58E-11 1.35E-12 -2.81E-14 4.08E-16 -3.90E-18 2.22E-20 -5.68E-23 S2 4.47E-09 -2.70E-10 1.14E-11 -3.30E-13 6.26E-15 -7.01E-17 3.52E-19 S3 -6.20E-13 1.15E-14 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S4 -3.47E-12 3.16E-14 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S5 -9.57E-09 1.23E-10 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S6 -1.45E-09 2.51E-11 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S7 4.75E-08 3.92E-09 -1.09E-09 1.06E-10 -5.67E-12 1.65E-13 -2.05E-15 S8 -2.68E-06 3.02E-07 -2.43E-08 1.37E-09 -5.10E-11 1.13E-12 -1.13E-14 S9 1.22E-10 -1.28E-12 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S10 -1.34E-11 1.17E-13 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S11 3.27E-07 -2.36E-08 1.21E-09 -4.35E-11 1.03E-12 -1.45E-14 9.15E-17 S12 7.40E-08 -4.78E-09 2.19E-10 -6.96E-12 1.46E-13 -1.82E-15 1.02E-17 S13 -3.98E-08 1.14E-09 -3.38E-12 -1.11E-12 4.40E-14 -7.70E-16 5.41E-18 S14 -5.85E-09 1.75E-10 -3.80E-12 5.78E-14 -5.87E-16 3.57E-18 -9.81E-21

[0198] Table 18-2

[0199] Figure 18A The on-axis chromatic aberration curve of the camera lens of Embodiment 9 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 18B The astigmatism curve of the camera lens of Embodiment 9 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 18C The distortion curve of the camera lens in Example 9 is shown, which represents the distortion magnitude value corresponding to different field of view angles. Figure 18D The magnification chromatic aberration curve of the camera lens of Embodiment 9 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 18A to 18D It can be seen that the camera lens given in Example 9 can achieve good imaging quality.

[0200] In summary, Examples 1 to 9 satisfy the relationships shown in Table 19.

[0201]

[0202] Table 19

[0203] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An image pickup lens characterized by comprising: In order from the object side to the image side along the optical axis, the camera lens comprises: a first lens with negative refractive power, the object side surface of which is convex, and the image side surface of which is concave; a second lens with refractive power; a third lens with refractive power, the object side surface of which is convex; a fourth lens with positive refractive power, the object side surface of which is convex; a fifth lens with refractive power, the object side surface of which is convex, and the image side surface of which is concave; a sixth lens with positive refractive power, the object side surface of which is convex; a seventh lens with negative refractive power, the image side surface of which is concave; the number of lenses with refractive power in the camera lens is seven; and the second lens and the third lens have opposite positive and negative refractive powers, and the second lens and the fifth lens have the same positive and negative refractive powers; half the length of the diagonal of the effective pixel area on the imaging surface of the camera lens ImgH satisfies 8.35mm≥ImgH≥7.34mm; and the air separation T67 of the sixth lens and the seventh lens on the optical axis, the central thickness CT2 of the second lens on the optical axis satisfy 0.80≤T67 / CT2≤2.22; the sum ∑CT of the central thicknesses of the first lens to the seventh lens on the optical axis, the central thickness CT3 of the third lens on the optical axis, the central thickness CT4 of the fourth lens on the optical axis, and the central thickness CT5 of the fifth lens on the optical axis satisfy 2.03≤∑CT / (CT3+CT4+CT5)≤2.51; the sum ∑CT of the central thicknesses of the first lens to the seventh lens on the optical axis and the sum ∑AT of the air separations of any two adjacent lenses of the first lens to the seventh lens on the optical axis satisfy 1.0<∑CT / ∑AT≤1.

54.

2. The camera lens of claim 1, wherein the air separation T23 of the second lens and the third lens on the optical axis and the central thickness CT2 of the second lens on the optical axis satisfy 0.02≤T23 / CT2≤1.

22.

3. The camera lens of claim 1, wherein the air separation T12 of the first lens and the second lens on the optical axis, the air separation T23 of the second lens and the third lens on the optical axis, and the sum ∑AT of the air separations of any two adjacent lenses of the first lens to the seventh lens on the optical axis satisfy 0.40≤(T12+T23) / ∑AT≤0.

55.

4. The camera lens of claim 1, wherein the combined focal length f45 of the fourth lens and the fifth lens and the combined focal length f56 of the fifth lens and the sixth lens satisfy 0.26≤|f45| / f56≤1.

61.

5. The camera lens of claim 1, wherein the radius of curvature R14 of the image side surface of the seventh lens and the radius of curvature R2 of the image side surface of the first lens satisfy 0.49≤R14 / R2≤1.

62.

6. The camera lens of claim 1, wherein the distance SAG12 on the optical axis from the intersection of the image side surface of the first lens and the optical axis to the effective radius vertex of the image side surface of the first lens and the distance SAG71 on the optical axis from the intersection of the object side surface of the seventh lens and the optical axis to the effective radius vertex of the object side surface of the sixth lens satisfy -1.3<SAG12 / SAG71≤-1.

00.

7. The camera lens of claim 1, wherein A distance SAG51 on the optical axis from an intersection of the object side surface of the fifth lens and the optical axis to an effective radius vertex of the object side surface of the fifth lens, a distance SAG12 on the optical axis from an intersection of the image side surface of the first lens and the optical axis to an effective radius vertex of the image side surface of the first lens, and a distance SAG22 on the optical axis from an intersection of the image side surface of the second lens and the optical axis to an effective radius vertex of the image side surface of the second lens satisfy: -0.25≤SAG51 / (SAG12+SAG22)≤0.

22.

8. The camera lens of claim 1, wherein A maximum effective radius DT61 of the object side surface of the sixth lens, a maximum effective radius DT62 of the image side surface of the sixth lens, a maximum effective radius DT71 of the object side surface of the seventh lens, and a maximum effective radius DT72 of the image side surface of the seventh lens satisfy: 0.69≤(DT61+DT62) / (DT71+DT72)≤0.

81.

9. The camera lens of claim 1, wherein A maximum effective radius DT11 of the object side surface of the first lens, an edge thickness ET1 at the maximum effective radius of the first lens, an edge thickness ET2 at the maximum effective radius of the second lens, and an edge thickness ET3 at the maximum effective radius of the third lens satisfy: 1.19≤DT11 / (ET1+ET2+ET3)≤1.

63.

10. The camera lens of claim 1, wherein, An edge thickness ET3 at the maximum effective radius of the third lens and an edge thickness ET4 at the maximum effective radius of the fourth lens satisfy: 2.49≤(ET3+ET4) / ET4≤3.

90.

11. The camera lens of claim 1, wherein A refractive index N2 of the second lens, a refractive index N3 of the third lens, and a refractive index N6 of the sixth lens satisfy: 2.09≤(N2+N3) / N6<2.

2.

12. The camera lens of claim 1, wherein An Abbe number V1 of the first lens, an Abbe number V6 of the sixth lens, and an Abbe number V7 of the seventh lens satisfy: 2.00≤(V6+V1) / V7<4.

9.

13. The camera lens of any one of claims 1 to 12, wherein, At least one lens among the first lens to the seventh lens is glass.

14. A camera lens characterized in that, comprises, in order from the object side to the image side along the optical axis: a first lens with negative refractive power, whose object side surface is convex and whose image side surface is concave; a second lens with refractive power; a third lens with refractive power, whose object side surface is convex; a fourth lens with positive refractive power, whose object side surface is convex; a fifth lens with refractive power, whose object side surface is convex and whose image side surface is concave; a sixth lens with positive refractive power, whose object side surface is convex; a seventh lens with negative refractive power, whose image side surface is concave; the number of lenses with refractive power in the photographing lens is seven; and the second lens and the third lens have opposite positive and negative attributes of refractive power, and the second lens and the fifth lens have the same positive and negative attributes of refractive power; half of the diagonal line length of the effective pixel area on the imaging plane of the photographing lens ImgH satisfies: 8.35mm≥ImgH≥7.34mm; and a radius of curvature R14 of the image side surface of the seventh lens and a radius of curvature R2 of the image side surface of the first lens satisfy: 0.49≤R14 / R2≤1.

62. A sum ∑CT of central thicknesses on the optical axis of the first lens to the seventh lens, a central thickness CT3 of the third lens on the optical axis, a central thickness CT4 of the fourth lens on the optical axis, and a central thickness CT5 of the fifth lens on the optical axis satisfy: 2.03 ≤ ∑CT / (CT3+CT4+CT5) ≤ 2.

51. A sum ∑CT of central thicknesses on the optical axis of the first lens to the seventh lens and a sum ∑AT of air intervals on the optical axis of any two adjacent lenses of the first lens to the seventh lens satisfy: 1.0 < ∑CT / ∑AT ≤ 1.

54.

15. The camera lens of claim 14, wherein, An air interval T23 on the optical axis of the second lens and the third lens and a central thickness CT2 of the second lens on the optical axis satisfy: 0.02 ≤ T23 / CT2 ≤ 1.

22.

16. The camera lens of claim 14, wherein, An air interval T12 on the optical axis of the first lens and the second lens, an air interval T23 on the optical axis of the second lens and the third lens, and a sum ∑AT of air intervals on the optical axis of any two adjacent lenses of the first lens to the seventh lens satisfy: 0.40 ≤ (T12+T23) / ∑AT ≤ 0.

55.

17. The camera lens of claim 14, wherein, A composite focal length f45 of the fourth lens and the fifth lens and a composite focal length f56 of the fifth lens and the sixth lens satisfy: 0.26 ≤ |f45| / f56 ≤ 1.

61.

18. The camera lens of claim 17, wherein, An air interval T67 on the optical axis of the sixth lens and the seventh lens and a central thickness CT2 of the second lens on the optical axis satisfy: 0.80 ≤ T67 / CT2 ≤ 2.

22.

19. The camera lens of claim 14, wherein, A distance SAG12 on the optical axis from an intersection of the image side surface of the first lens and the optical axis to an effective radius vertex of the image side surface of the first lens and a distance SAG71 on the optical axis from an intersection of the object side surface of the seventh lens and the optical axis to an effective radius vertex of the object side surface of the sixth lens satisfy: -1.3 < SAG12 / SAG71 ≤ -1.

00.

20. The camera lens of claim 14, wherein, A distance SAG51 on the optical axis from an intersection of the object side surface of the fifth lens and the optical axis to an effective radius vertex of the object side surface of the fifth lens, a distance SAG12 on the optical axis from an intersection of the image side surface of the first lens and the optical axis to an effective radius vertex of the image side surface of the first lens, and a distance SAG22 on the optical axis from an intersection of the image side surface of the second lens and the optical axis to an effective radius vertex of the image side surface of the second lens satisfy: -0.25 ≤ SAG51 / (SAG12+SAG22) ≤ 0.

22.

21. The camera lens of claim 14, wherein, A maximum effective radius DT61 of the object side surface of the sixth lens, a maximum effective radius DT62 of the image side surface of the sixth lens, a maximum effective radius DT71 of the object side surface of the seventh lens, and a maximum effective radius DT72 of the image side surface of the seventh lens satisfy: 0.69 ≤ (DT61+DT62) / (DT71+DT72) ≤ 0.

81.

22. The camera lens of claim 14, wherein, The maximum effective radius DT11 of the object side surface of the first lens, the edge thickness ET1 at the maximum effective radius of the first lens, the edge thickness ET2 at the maximum effective radius of the second lens, and the edge thickness ET3 at the maximum effective radius of the third lens satisfy: 1.19≤DT11 / (ET1+ET2+ET3)≤1.

63.

23. The camera lens of claim 14, wherein, The edge thickness ET3 at the maximum effective radius of the third lens, and the edge thickness ET4 at the maximum effective radius of the fourth lens satisfy: 2.49≤(ET3+ET4) / ET4≤3.

90.

24. The camera lens of claim 14, wherein, The refractive index N2 of the second lens, the refractive index N3 of the third lens, and the refractive index N6 of the sixth lens satisfy: 2.09≤(N2+N3) / N6<2.

2.

25. The camera lens of claim 14, wherein, The Abbe number V1 of the first lens, the Abbe number V6 of the sixth lens, and the Abbe number V7 of the seventh lens satisfy: 2.00≤(V6+V1) / V7<4.

9.

26. The camera lens of any one of claims 14 to 25, wherein, At least one of the first lens to the seventh lens is glass.

Images