Optical lens and electronic device

Abstract

The application discloses an optical lens and an electronic device comprising the same. The optical lens comprises, in order from a first side to a second side along an optical axis: a first lens with negative optical power, the first side of which is a convex surface and the second side of which is a concave surface; a second lens with optical power, the first side of which is a concave surface and the second side of which is a convex surface; a third lens with positive optical power, the first side of which is a convex surface and the second side of which is a convex surface; a fourth lens with positive optical power, the first side of which is a convex surface; a fifth lens; a sixth lens; and a seventh lens.

Description

Technical Field

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

[0002] With the rapid development of autonomous driving assistance systems, the performance requirements for optical lenses used in vehicle side-view cameras are becoming increasingly stringent. In some practical applications, vehicle side-view cameras are typically installed on the sides of the car, such as below the rearview mirrors. This results in limited installation space for the optical lenses, necessitating their miniaturization and concealment. Simultaneously, to achieve wide-area monitoring of the environment on both sides of the vehicle, the optical lenses need a large field of view. For safety reasons, strong ghosting can easily cause the machine recognition function of the autonomous driving system to misjudge the current situation, thus requiring high ghosting performance from the optical lenses. Furthermore, real-world road detection scenarios are complex, requiring the optical lenses to have good recognition capabilities for objects of different colors, thus demanding high chromatic aberration performance. Additionally, in dark environments such as at night or on rainy days, the optical lenses need high light transmittance to maintain good image quality even in low-light conditions. Moreover, the optical lenses must maintain image clarity in high and low temperature environments; for example, after returning from high temperature to room temperature, the optical lenses must exhibit good thermal stability and maintain satisfactory resolution. Furthermore, the optical lens meets the requirements of low cost and lightweight design.

[0003] However, existing optical lenses are limited by factors such as installation location and manufacturing processes, making it difficult to simultaneously achieve miniaturization, high resolution, a wide field of view, and minimal ghosting. Furthermore, while existing optical lenses can achieve megapixel resolution, they suffer from significant aberrations such as chromatic aberration, astigmatism, and distortion. They also have poor light transmission capabilities, resulting in high image noise in low-light environments such as at night or on cloudy days. Additionally, they are susceptible to image blurring in high and low temperature environments, exhibiting poor thermal stability; after returning to room temperature from high temperatures, their resolution often fails to meet requirements, and they are also costly and heavy.

[0004] Therefore, the market urgently needs an optical lens that can solve at least some of the aforementioned technical problems. Summary of the Invention

[0005] This application provides an optical lens. The optical lens includes: a first lens with negative optical power, having a first convex side and a second concave side; a second lens with optical power, having a first concave side and a second convex side; a third lens with positive optical power, having a first convex side and a second convex side; a fourth lens with positive optical power, having a first convex side; a fifth lens; a sixth lens; and a seventh lens.

[0006] In some embodiments, the second lens has positive or negative optical power.

[0007] In some embodiments, the second side surface of the fourth lens is convex or concave.

[0008] In some embodiments, the fifth lens has negative optical power and its second side is concave; and the sixth lens has positive optical power and its first side is convex and its second side is convex.

[0009] In some embodiments, the first side surface of the fifth lens is convex or concave.

[0010] In some embodiments, the fifth lens has positive optical power, with its first side surface being convex and its second side surface being convex; and the sixth lens has negative optical power, with its first side surface being concave and its second side surface being concave.

[0011] In some embodiments, the seventh lens has positive optical power and its first side surface is convex.

[0012] In some embodiments, the second side surface of the seventh lens is convex or concave.

[0013] In some embodiments, the seventh lens has negative optical power, and its first side surface is concave and its second side surface is concave.

[0014] In some implementations, the fifth lens and the sixth lens form a cemented lens.

[0015] In some implementations, the total length TTL of the optical lens and the total effective focal length F of the optical lens satisfy: TTL / F≤10.

[0016] In some embodiments, the back focal length BFL of the optical lens and the distance TL between the first side surface of the first lens and the second side surface of the seventh lens on the optical axis satisfy: BFL / TL≥0.01.

[0017] In some implementations, the maximum field of view (FOV) of the optical lens, the image height (H) corresponding to the maximum field of view, and the maximum aperture (D) of the first side of the first lens corresponding to the maximum field of view satisfy: D / H / FOV≤0.2.

[0018] In some implementations, the maximum field of view θ of the optical lens, the image height H corresponding to the maximum field of view, and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view, expressed in radians, satisfy: D / H / θ≤1.5.

[0019] In some implementations, the total effective focal length F of the optical lens, the maximum field of view (FOV) of the optical lens, and the image height H corresponding to the maximum field of view satisfy: 40 ≤ (FOV × F) / H ≤ 90.

[0020] In some implementations, the total effective focal length F of the optical lens, the maximum field of view θ of the optical lens in radians, and the image height H corresponding to the maximum field of view satisfy: |(HF×θ) / (F×θ)|≤0.8.

[0021] In some implementations, the effective focal length F2 of the second lens and the total effective focal length F of the optical lens satisfy: |F2 / F|≥3.

[0022] In some implementations, the effective focal length F7 of the seventh lens and the total effective focal length F of the optical lens satisfy: |F7 / F|≥1.

[0023] In some embodiments, the sagitta SAG3 of the first side of the second lens corresponding to the maximum field of view of the optical lens, the half-aperture D3 of the maximum light-transmitting aperture of the first side of the second lens corresponding to the maximum field of view, the sagitta SAG4 of the second side of the second lens corresponding to the maximum field of view, and the half-aperture D4 of the maximum light-transmitting aperture of the second side of the second lens corresponding to the maximum field of view satisfy: 0.1≤(SAG3 / D3) / (SAG4 / D4)≤5.

[0024] In some embodiments, the sagitta SAG13 of the first side of the seventh lens corresponding to the maximum field of view of the optical lens, the half-aperture D13 of the maximum light-transmitting aperture of the first side of the seventh lens corresponding to the maximum field of view, the sagitta SAG14 of the second side of the seventh lens corresponding to the maximum field of view, and the half-aperture D14 of the maximum light-transmitting aperture of the second side of the seventh lens corresponding to the maximum field of view satisfy: -0.5≤(SAG13 / D13) / (SAG14 / D14)≤15.

[0025] In some embodiments, the sag SAG2 corresponding to the second side of the first lens corresponding to the maximum field of view of the optical lens, the half-aperture D2 of the maximum light-transmitting aperture of the second side of the first lens corresponding to the maximum field of view, and the radius of curvature R2 of the second side of the first lens satisfy: 0.4≤arctan(D2 / (R2-SAG2))≤6.

[0026] In some embodiments, the sag SAG3 corresponding to the first side of the second lens corresponding to the maximum field of view of the optical lens, the half-aperture D3 of the maximum light-transmitting aperture of the first side of the second lens corresponding to the maximum field of view, and the radius of curvature R3 of the first side of the second lens satisfy: -3≤arctan(D3 / (R3-SAG3))≤0.

[0027] In some embodiments, the distance d2 between the first lens and the second lens satisfies the following condition with respect to the total length TTL of the optical lens: 0.06 ≤ d2 / TTL ≤ 0.25.

[0028] In some embodiments, the effective focal length F(+) of the cemented lens having positive power and the effective focal length F(-) of the cemented lens having negative power satisfy: 0.1≤|F(+) / F(-)|≤4.

[0029] In some embodiments, the refractive index Vd(+) of the positive power lens in the cemented lens and the Abbe number Nd(+) of the positive power lens in the cemented lens satisfy: 26≤Vd(+) / Nd(+)≤53.

[0030] In some implementations, the effective focal length F3 of the third lens and the effective focal length F4 of the fourth lens satisfy: 0.1≤|F3 / F4|≤1.25.

[0031] In some embodiments, the total effective focal length F of the optical lens, the radius of curvature R3 of the first side surface of the second lens, and the radius of curvature R4 of the second side surface of the second lens satisfy: |F / R3|+|F / R4|≤3.

[0032] In some embodiments, the total effective focal length F of the optical lens, the radius of curvature R6 of the first side surface of the third lens, and the radius of curvature R7 of the second side surface of the third lens satisfy: |F / R6|+|F / R7|≤1.2

[0033] In some implementations, the total effective focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy: F / H≤0.8.

[0034] In some embodiments, the effective focal length F1 of the first lens and the center thickness d1 of the first lens satisfy: -6≤F1 / d1≤-1.

[0035] In some implementations, the total effective focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following condition: F / ENPD≤1.59.

[0036] This application also provides an optical lens. The optical lens includes: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens, wherein the first lens has negative optical power; the third and fourth lenses have positive optical power; and the total effective focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy: F / ENPD≤1.59.

[0037] In some embodiments, the first side surface of the first lens is convex, and the second side surface is concave.

[0038] In some embodiments, the second lens has positive or negative optical power, and the first side of the second lens is concave and the second side is convex.

[0039] In some embodiments, the first side surface of the third lens is convex, and the second side surface is convex.

[0040] In some embodiments, the first side of the fourth lens is convex, and the second side is either convex or concave.

[0041] In some embodiments, the fifth lens has negative optical power and its second side is concave; and the sixth lens has positive optical power and its first side is convex and its second side is convex.

[0042] In some embodiments, the first side surface of the fifth lens is convex or concave.

[0043] In some embodiments, the fifth lens has positive optical power, with its first side surface being convex and its second side surface being convex; and the sixth lens has negative optical power, with its first side surface being concave and its second side surface being concave.

[0044] In some embodiments, the seventh lens has positive optical power and its first side surface is convex.

[0045] In some embodiments, the second side surface of the seventh lens is convex or concave.

[0046] In some embodiments, the seventh lens has negative optical power, and its first side surface is concave and its second side surface is concave.

[0047] In some implementations, the fifth lens and the sixth lens form a cemented lens.

[0048] In some implementations, the total length (TTL) of the optical lens satisfies: TTL / F ≤ 10.

[0049] In some embodiments, the back focal length BFL of the optical lens and the distance TL between the first side surface of the first lens and the second side surface of the seventh lens on the optical axis satisfy: BFL / TL≥0.01.

[0050] In some implementations, the maximum field of view (FOV) of the optical lens, the image height (H) corresponding to the maximum field of view, and the maximum aperture (D) of the first side of the first lens corresponding to the maximum field of view satisfy: D / H / FOV≤0.2.

[0051] In some implementations, the maximum field of view θ of the optical lens, the image height H corresponding to the maximum field of view, and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view, expressed in radians, satisfy: D / H / θ≤1.5.

[0052] In some implementations, the maximum field of view (FOV) of the optical lens and the image height (H) corresponding to the maximum field of view satisfy: 40 ≤ (FOV × F) / H ≤ 90.

[0053] In some implementations, the maximum field of view θ of the optical lens, expressed in radians, and the image height H corresponding to the maximum field of view satisfy: |(HF×θ) / (F×θ)|≤0.8.

[0054] In some implementations, the effective focal length F2 of the second lens satisfies: |F2 / F|≥3.

[0055] In some implementations, the effective focal length F7 of the seventh lens satisfies: |F7 / F|≥1.

[0056] In some embodiments, the sagitta SAG3 corresponding to the first side of the second lens at the maximum field of view of the optical lens, the half-aperture D3 of the maximum light-transmitting aperture of the first side of the second lens at the maximum field of view, the sagitta SAG4 corresponding to the second side of the second lens at the maximum field of view, and the half-aperture D4 of the maximum light-transmitting aperture of the second side of the second lens at the maximum field of view satisfy: 0.1≤(SAG3 / D3) / (SAG4 / D4)≤5.

[0057] In some embodiments, the sagitta SAG13 of the first side of the seventh lens corresponding to the maximum field of view of the optical lens, the half-aperture D13 of the maximum light-transmitting aperture of the first side of the seventh lens corresponding to the maximum field of view, the sagitta SAG14 of the second side of the seventh lens corresponding to the maximum field of view, and the half-aperture D14 of the maximum light-transmitting aperture of the second side of the seventh lens corresponding to the maximum field of view satisfy: -0.5≤(SAG13 / D13) / (SAG14 / D14)≤15.

[0058] In some embodiments, the sag SAG2 corresponding to the second side of the first lens at the maximum field of view of the optical lens, the half-aperture D2 of the maximum light-transmitting aperture of the second side of the first lens at the maximum field of view, and the radius of curvature R2 of the second side of the first lens satisfy: 0.4≤arctan(D2 / (R2-SAG2))≤6.

[0059] In some embodiments, the sag SAG3 corresponding to the first side of the second lens corresponding to the maximum field of view of the optical lens, the half-aperture D3 of the maximum light-transmitting aperture of the first side of the second lens corresponding to the maximum field of view, and the radius of curvature R3 of the first side of the second lens satisfy: -3≤arctan(D3 / (R3-SAG3))≤0.

[0060] In some embodiments, the distance d2 between the first lens and the second lens satisfies the following condition with respect to the total length TTL of the optical lens: 0.06 ≤ d2 / TTL ≤ 0.25.

[0061] In some embodiments, the effective focal length F(+) of the cemented lens having positive power and the effective focal length F(-) of the cemented lens having negative power satisfy: 0.1≤|F(+) / F(-)|≤4.

[0062] In some embodiments, the refractive index Vd(+) of the positive power lens in the cemented lens and the Abbe number Nd(+) of the positive power lens in the cemented lens satisfy: 26≤Vd(+) / Nd(+)≤53.

[0063] In some implementations, the effective focal length F3 of the third lens and the effective focal length F4 of the fourth lens satisfy: 0.1≤|F3 / F4|≤1.25.

[0064] In some embodiments, the radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy: |F / R3|+|F / R4|≤3.

[0065] In some embodiments, the radius of curvature R6 of the first side surface of the third lens and the radius of curvature R7 of the second side surface of the third lens satisfy: |F / R6|+|F / R7|≤1.2

[0066] In some implementations, the image height H corresponding to the maximum field of view of the optical lens satisfies: F / H≤0.8.

[0067] In some embodiments, the effective focal length F1 of the first lens and the center thickness d1 of the first lens satisfy: -6≤F1 / d1≤-1.

[0068] In another aspect, this application also provides an electronic device, including an optical lens according to this application and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

[0069] This application employs seven lenses. By optimizing the shape and optical power of each lens, the optical lens achieves at least one beneficial effect, such as miniaturization, large field of view, low distortion, weak ghosting, good temperature performance, high resolution, high light transmission, and low cost. Attached Figure Description

[0070] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings. In the drawings:

[0071] Figure 1This is a schematic diagram illustrating the structure of an optical lens according to Embodiment 1 of this application;

[0072] Figure 2 To illustrate the structure of the optical lens according to Embodiment 2 of this application;

[0073] Figure 3 To illustrate the structure of the optical lens according to Embodiment 3 of this application;

[0074] Figure 4 This is a schematic diagram illustrating the structure of the optical lens according to Embodiment 4 of this application;

[0075] Figure 5 This is a schematic diagram illustrating the structure of the optical lens according to Embodiment 5 of this application;

[0076] Figure 6 To illustrate the structure of the optical lens according to Embodiment 6 of this application;

[0077] Figure 7 This is a schematic diagram illustrating the structure of the optical lens according to Embodiment 7 of this application;

[0078] Figure 8 This is a schematic diagram illustrating the structure of the optical lens according to Embodiment 8 of this application;

[0079] Figure 9 To illustrate the structural schematic diagram of the optical lens according to Embodiment 9 of this application; and

[0080] Figure 10 This is a schematic diagram illustrating the structure of an optical lens according to Embodiment 10 of this application. Detailed Implementation

[0081] To facilitate understanding of this application, a more complete description of the application will be provided below with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of the application and are not intended to limit the scope of the 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.

[0082] 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.

[0083] 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.

[0084] In this document, 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 first side is called the first side surface of the lens, and the surface of each lens closest to the second side is called the second side surface of the lens. The surface of an optical lens closest to the second side is called the second side surface of the optical lens. Exemplarily, the first side may be the object side and the second side may be the image side; or, the first side may be the imaging side and the second side may be the image source side.

[0085] 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.

[0086] 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 a 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.

[0087] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0088] The features, principles and other aspects of this application are described in detail below.

[0089] In an exemplary embodiment, the optical lens includes, for example, seven lenses with optical power, namely a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. These seven lenses are arranged sequentially along the optical axis from the first side to the second side.

[0090] In an exemplary embodiment, the optical lens provided in this application can be used, for example, as a vehicle-mounted side-view lens. In this case, the first side of the optical lens can be the object side, and the second side can be the image side. Light rays from the object side can be imaged on the image side, and the second side of the optical lens can be the imaging surface of the optical lens.

[0091] In an exemplary embodiment, the optical lens provided in this application can be used as, for example, a projection lens or a lidar transmitter lens. In this case, the second side of the optical lens can be the image source side, and the first side can be the imaging side. Light from the image source side can be imaged on the imaging side. The second side of the optical lens can be the image source surface of the optical lens.

[0092] In an exemplary embodiment, the optical lens may further include a photosensitive element disposed on the second side. Optionally, the photosensitive element disposed on the second side may be a photocoupled device (CCD) or a complementary metal oxide semiconductor device (CMOS).

[0093] In an exemplary embodiment, the first lens may have negative optical power and a convex-concave surface. This configuration of optical power and surface shape of the first lens can maximize the collection of light from a large field of view into the rear optical system, thereby increasing the amount of light transmitted. Furthermore, the first side surface of the first lens is convex, which, in practical environments such as rainy or snowy weather, facilitates the sliding off of water droplets, thus reducing their impact on imaging. Optionally, the first lens may be made of a material with high refractive index and high hardness.

[0094] In an exemplary embodiment, the second lens may have positive or negative optical power and may have a concave-convex surface. The first side surface of the second lens is concave, which helps to diverge light rays entering after passing through the first lens and to fill the aperture. The second side surface of the second lens is convex, which allows light rays to tend to be incident perpendicularly when entering the mirror surface, resulting in a smooth transition when light enters the mirror surface, which helps to reduce aberrations and improve resolving power. Optionally, the first and second sides of the second lens may be aspherical mirror surfaces to further improve resolving quality. Furthermore, by controlling the optical power of the second lens to have a smaller value, it is beneficial to reduce the impact of changes in the second lens on back focus shift in high and low temperature environments, further improving the temperature performance of the optical lens.

[0095] In an exemplary embodiment, the third lens may have positive optical power and may be biconvex. Positive optical power in the third lens facilitates light convergence, compresses the angle of incident light to achieve a smooth transition, and also helps reduce the aperture of the rear lens. Furthermore, the convexity of the second side of the third lens allows light to enter the mirror surface more perpendicularly, resulting in a smooth transition and reducing aberrations, thus improving resolving power. Optionally, the third lens may be made of a high-refractive-index material, which facilitates rapid light convergence, reduces light divergence, and, by selecting a suitable Abbe number, helps balance chromatic aberration and improve image quality.

[0096] In an exemplary embodiment, the fourth lens may have positive optical power and may be biconvex or convex-concave. The positive optical power of the fourth lens allows it to converge light rays, facilitating a smooth transition of light to the rear lens. By controlling the effective focal length of the fourth lens, the light path from the first lens to the fourth lens is controlled, resulting in a compact optical lens structure. The first side surface of the fourth lens is convex, contributing to a smoother light path. Optionally, the second side surface of the fourth lens is convex, which facilitates light convergence and reduces the rear aperture. Optionally, the second side surface of the fourth lens is concave, which converges light rays, reduces light divergence, and allows light to enter the rear lens smoothly, improving image quality.

[0097] In an exemplary embodiment, the fifth lens may have negative optical power and may be either biconcave or convex-concave. The sixth lens may have positive optical power and may be biconvex. The first side surface of the sixth lens is convex, which allows light entering through the fifth lens to converge further and smoothly enter the rear lens, improving resolving power. By controlling the effective focal lengths of the sixth and fifth lenses to be similar, it is beneficial to ensure stable imaging of the optical lens even in high and low temperature environments. Optionally, if the fifth lens is biconcave, it allows light emanating from the fifth lens to diverge. When the fifth lens is made of a high refractive index material, it is convenient to pair it with a high Abbe number lens to correct chromatic aberration. Optionally, if the fifth lens is convex-concave, it is beneficial to reduce the height of light entering the sixth lens. Furthermore, the first side surface of the fifth lens being convex also facilitates a smoother transition of light entering from the fourth lens, reducing light energy loss and improving resolving power.

[0098] In an exemplary embodiment, the fifth lens may have positive optical power and may be biconvex. The sixth lens may have negative optical power and may be biconcave. The negative optical power of the sixth lens allows it to collect light rays entering through the fifth lens, resulting in a smoother light path transition. The biconcave shape of the sixth lens helps to make the light rays trend upwards, thereby expanding the imaging range. The second side surface of the sixth lens is concave, which can cooperate with the seventh lens, whose first side surface is convex, to help shorten the physical distance, reduce the overall length of the optical lens, and achieve miniaturization. The convex first side surface of the fifth lens helps to lower the height of the light rays entering the sixth lens.

[0099] In an exemplary embodiment, the seventh lens may have positive optical power and may be biconvex or convex-concave. A seventh lens with positive optical power and a gently sloping shape allows diverging light rays to converge smoothly and enter the rear lens, further smoothing the light path transition. This helps improve astigmatism and field curvature, enhancing the resolving power of the optical lens. The second side of the seventh lens is concave, causing light rays to diverge upwards after passing through it, allowing for rapid accumulation of light on the image plane and expanding the imaging range. Simultaneously, the concave nature of the second side minimizes the forward and backward deflection of light rays, reducing light energy loss and achieving higher relative illumination. Furthermore, the gentle light path reduces the impact of changes in the second side of the seventh lens on the light, thus lowering its sensitivity. Optionally, the first and second sides of the seventh lens may be aspherical mirrors.

[0100] In an exemplary embodiment, the seventh lens may have negative optical power and may be biconcave. The second side of the seventh lens is concave, allowing light rays to diverge upwards after passing through it, and enabling rapid accumulation of light rays on the image plane, thus expanding the imaging range. By reasonably controlling the optical power of the seventh lens, it can be made to have a small optical power value and a smooth shape for its first and second sides, resulting in a smooth transition of light rays after passing through the seventh lens. Furthermore, a smaller optical power of the seventh lens can reduce its influence on back focus shift under high and low temperature variations, further improving the temperature performance of the optical lens. Optionally, the first and second sides of the seventh lens may be aspherical mirrors to further improve resolution and correct aberrations.

[0101] In an exemplary embodiment, the fifth and sixth lenses form a cemented lens. This arrangement helps to shorten the overall length of the optical lens, thereby facilitating its miniaturization. Furthermore, light passing through the cemented lens is not significantly refracted, effectively bridging incoming light and reducing lens sensitivity. By using fifth and sixth lenses with different Abbe numbers to form the cemented lens, overall aberration correction of the optical lens is improved, enhancing image quality. Simultaneously, the close focal lengths of the fifth and sixth lenses effectively improve the thermal compensation effect of the optical lens. In addition, cemented lenses have the following beneficial effects: they can fully correct various aberrations of optical lenses, and improve optical performance such as resolution, distortion, and CRA while maintaining a compact optical lens structure; the cemented lens has a higher refractive index compared to the lens with a negative optical power and a positive optical power, which allows light to converge effectively and smoothly, ensuring that the light reaches the imaging plane smoothly; they can reduce light loss caused by reflections between lenses, and the combination of high and low refractive indices of the two lenses facilitates a rapid transition of light from the front, and can increase the amount of light transmitted by increasing the aperture; they can reduce the air gap between the two lenses, making the overall structure of the optical lens more compact, while reducing tolerance sensitivity issues such as overall eccentricity during lens assembly.

[0102] In an exemplary embodiment, the optical lens according to this application satisfies the following condition: TTL / F ≤ 10. Here, TTL is the total length of the optical lens, and F is the total effective focal length of the optical lens. The total length of the optical lens can be the distance along the optical axis between the first side of the first lens and the imaging plane of the optical lens. Satisfying TTL / F ≤ 10 effectively limits the length of the optical lens, achieving miniaturization. More specifically, TTL and F can further satisfy: TTL / F ≤ 8.6.

[0103] In an exemplary embodiment, the optical lens according to this application satisfies: BFL / TL ≥ 0.01. Here, BFL is the back focal length of the optical lens, and TL is the distance TL between the first side surface of the first lens and the second side surface of the seventh lens on the optical axis. The back focal length of the optical lens can be the distance between the second side surface of the seventh lens and the imaging plane of the optical lens on the optical axis. Satisfying BFL / TL ≥ 0.01 allows the optical lens to have a long back focal length while achieving miniaturization, which is beneficial for module assembly. More specifically, BFL and TL can further satisfy: BFL / TL ≥ 0.08.

[0104] In an exemplary embodiment, the optical lens according to this application satisfies the following condition: D / H / FOV ≤ 0.2. Here, FOV is the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, and D is the maximum aperture of the first side of the first lens corresponding to the maximum field of view of the optical lens. Satisfying D / H / FOV ≤ 0.2 is beneficial for reducing the front aperture of the optical lens and achieving miniaturization. More specifically, FOV, H, and D can further satisfy: D / H / FOV ≤ 0.1.

[0105] In an exemplary embodiment, the optical lens according to this application satisfies: D / H / θ ≤ 1.5. Here, θ is the maximum field of view of the optical lens expressed in radians, H is the image height corresponding to the maximum field of view of the optical lens, and D is the maximum aperture of the first side of the first lens corresponding to the maximum field of view of the optical lens. Satisfying D / H / θ ≤ 1.5 is beneficial for reducing the front aperture of the optical lens and achieving miniaturization. More specifically, θ, H, and D can further satisfy: D / H / θ ≤ 1.2.

[0106] In an exemplary embodiment, the optical lens according to this application satisfies: 40 ≤ (FOV × F) / H ≤ 90. Here, F is the total effective focal length of the optical lens, FOV is the maximum field of view of the optical lens, and H is the image height corresponding to the maximum field of view of the optical lens. Satisfying 40 ≤ (FOV × F) / H ≤ 90 is advantageous because it allows the optical lens to simultaneously possess the characteristics of a long focal length, a large field of view, high angular resolution, and large distortion. More specifically, F, FOV, and H can further satisfy: 45 ≤ (FOV × F) / H ≤ 65.

[0107] In an exemplary embodiment, the optical lens according to this application satisfies: |(HF×θ) / (F×θ)|≤0.8. Where F is the total effective focal length of the optical lens, θ is the maximum field of view of the optical lens in radians, and H is the image height corresponding to the maximum field of view of the optical lens. The optical lens satisfying |(HF×θ) / (F×θ)|≤0.8 helps to make the actual imaging plane size approximately consistent with the theoretical imaging plane size, achieving low distortion. More specifically, F, θ, and H can further satisfy: |(HF×θ) / (F×θ)|≤0.4.

[0108] In an exemplary embodiment, the optical lens according to this application satisfies: |F2 / F|≥3. Here, F2 is the effective focal length of the second lens, and F is the total effective focal length of the optical lens. Satisfying |F2 / F|≥3 allows the effective focal length of the second lens to remain stable over a large temperature range, exhibiting excellent temperature performance and facilitating stable performance of the optical lens under temperature variations. Optionally, the second lens is made of plastic, which helps reduce costs. More specifically, F2 and F may further satisfy: |F2 / F|≥8.

[0109] In an exemplary embodiment, the optical lens according to this application satisfies: |F7 / F|≥1. Here, F7 is the effective focal length of the seventh lens, and F is the total effective focal length of the optical lens. Satisfying |F7 / F|≥1 allows the effective focal length of the seventh lens to remain stable over a wide temperature range, exhibiting excellent temperature performance and facilitating stable performance of the optical lens under temperature variations. Optionally, the seventh lens is made of plastic, which helps reduce costs. More specifically, F2 and F further satisfy: |F2 / F|≥2.

[0110] In an exemplary embodiment, the optical lens according to this application satisfies: 0.1 ≤ (SAG3 / D3) / (SAG4 / D4) ≤ 5. Wherein, SAG3 is the sag of the first side surface of the second lens corresponding to the maximum field of view of the optical lens, D3 is half the aperture of the maximum light-transmitting diameter of the first side surface of the second lens corresponding to the maximum field of view of the optical lens, SAG4 is the sag of the second side surface of the second lens corresponding to the maximum field of view of the optical lens, and D4 is half the aperture of the maximum light-transmitting diameter of the second side surface of the second lens corresponding to the maximum field of view. Satisfying 0.1 ≤ (SAG3 / D3) / (SAG4 / D4) ≤ 5 allows the shapes of the first and second side surfaces of the second lens to be similar, which facilitates a smooth transition of peripheral light and reduces lens sensitivity. More specifically, SAG3, D3, SAG4, and D4 can further satisfy: 0.3 ≤ (SAG3 / D3) / (SAG4 / D4) ≤ 3.

[0111] In an exemplary embodiment, the optical lens according to this application satisfies: -0.5 ≤ (SAG13 / D13) / (SAG14 / D14) ≤ 15. Here, SAG13 is the sag of the first side of the seventh lens corresponding to the maximum field of view of the optical lens, D13 is half the maximum aperture of the first side of the seventh lens corresponding to the maximum field of view, SAG14 is the sag of the second side of the seventh lens corresponding to the maximum field of view, and D14 is half the maximum aperture of the second side of the seventh lens corresponding to the maximum field of view. The optical lens satisfying -0.5 ≤ (SAG13 / D13) / (SAG14 / D14) ≤ 15 allows the shapes of the first and second sides of the seventh lens to be similar, which facilitates a smooth transition of peripheral light and reduces lens sensitivity. More specifically, SAG13, D13, SAG14 and D14 can further satisfy: 0.1≤(SAG13 / D13) / (SAG14 / D14)≤12.

[0112] In an exemplary embodiment, the optical lens according to this application satisfies: 0.4 ≤ arctan(D2 / (R2-SAG2)) ≤ 6. Here, SAG2 is the sag of the second side surface of the first lens corresponding to the maximum field of view of the optical lens, D2 is half the aperture of the maximum light-transmitting aperture of the second side surface of the first lens corresponding to the maximum field of view, and R2 is the radius of curvature of the second side surface of the first lens. The optical lens satisfying 0.4 ≤ arctan(D2 / (R2-SAG2)) ≤ 6 limits the angle of the second side surface of the first lens, which helps to change the reflection path of the reflected light rays (the source of ghosting) through the second side surface of the first lens, altering the optical path of the reflected light rays and preventing them from converging at the image plane, thereby reducing ghosting. More specifically, SAG2, D2, and R2 can further satisfy: 0.7 ≤ arctan(D2 / (R2-SAG2)) ≤ 3.

[0113] In an exemplary embodiment, the optical lens according to this application satisfies: -3 ≤ arctan(D3 / (R3-SAG3)) ≤ 0. Here, SAG3 is the sag of the first side surface of the second lens corresponding to the maximum field of view of the optical lens, D3 is half the aperture of the maximum light-transmitting aperture of the first side surface of the second lens corresponding to the maximum field of view, and R3 is the radius of curvature of the first side surface of the second lens. The optical lens satisfying -3 ≤ arctan(D3 / (R3-SAG3)) ≤ 0 limits the angle of the first side surface of the second lens, which helps to change the reflection path of the reflected light rays (the source of ghosting) through the first side surface of the second lens, altering the optical path of the reflected light rays and preventing them from converging at the image plane, thereby reducing ghosting. More specifically, SAG3, D3, and R3 further satisfy: -2 ≤ arctan(D3 / (R3-SAG3)) ≤ -0.08.

[0114] In an exemplary embodiment, the optical lens according to this application satisfies: 0.06 ≤ d² / TTL ≤ 0.25. Here, d² is the distance between the first and second lenses, and TTL is the total length of the optical lens. The optical lens satisfying 0.06 ≤ d² / TTL ≤ 0.25 allows light to enter the second lens smoothly, helping to reduce ghosting caused by the distance d² between the first and second lenses. More specifically, d² and TTL can further satisfy: 0.09 ≤ d² / TTL ≤ 0.2.

[0115] In an exemplary embodiment, the optical lens according to this application satisfies: 0.1 ≤ |F(+) / F(-)| ≤ 4. Here, F(+) is the effective focal length of the positive-power lens in the cemented lens formed by the fifth and sixth lenses, and F(-) is the effective focal length of the negative-power lens in the cemented lens formed by the fifth and sixth lenses. The optical lens satisfying 0.1 ≤ |F(+) / F(-)| ≤ 4 indicates that the effective focal lengths of the two lenses in the cemented lens are similar, which helps to smooth the transition of light and is beneficial for correcting chromatic aberration. More specifically, F(+) and F(-) can further satisfy: 0.5 ≤ |F(+) / F(-)| ≤ 3.

[0116] In an exemplary embodiment, the optical lens according to this application satisfies: 26 ≤ Vd(+) / Nd(+) ≤ 53. Here, Vd(+) is the refractive index of the positive power lens in the cemented lens formed by the fifth and sixth lenses, and Nd(+) is the Abbe number of the positive power lens in the cemented lens formed by the fifth and sixth lenses. The optical lens satisfying 26 ≤ Vd(+) / Nd(+) ≤ 53 allows the positive power lens in the cemented lens formed by the fifth and sixth lenses to have both a low refractive index and a high Abbe number, which is beneficial for correcting chromatic aberration. More specifically, Vd(+) and Nd(+) can further satisfy: 28 ≤ Vd(+) / Nd(+) ≤ 47.

[0117] In an exemplary embodiment, the optical lens according to this application satisfies: 0.1 ≤ |F3 / F4| ≤ 1.25. Here, F3 is the effective focal length of the third lens, and F4 is the effective focal length of the fourth lens. The optical lens satisfying 0.1 ≤ |F3 / F4| ≤ 1.25, with the third and fourth lenses having similar effective focal lengths, facilitates a smooth transition of light, which is beneficial for image quality improvement. More specifically, F3 and F4 can further satisfy: 0.25 ≤ |F3 / F4| ≤ 1.15.

[0118] In an exemplary embodiment, the optical lens according to this application satisfies: |F / R3|+|F / R4|≤3. Here, F is the total effective focal length of the optical lens, R3 is the radius of curvature of the first side surface of the second lens, and R4 is the radius of curvature of the second side surface of the second lens. The optical lens satisfying |F / R3|+|F / R4|≤3 reduces the curvature of the second lens surface and helps incident light rays enter the optical lens smoothly, which is beneficial for effectively correcting astigmatism and improving image quality. More specifically, F, R3, and R4 can further satisfy: |F / R3|+|F / R4|≤2.

[0119] In an exemplary embodiment, the optical lens according to this application satisfies: |F / R6|+|F / R7|≤1.2. Here, F is the total effective focal length of the optical lens, R6 is the radius of curvature of the first side surface of the third lens, and R7 is the radius of curvature of the second side surface of the third lens. The optical lens satisfying |F / R6|+|F / R7|≤1.2 reduces the curvature of the third lens surface and helps incident light rays enter the optical lens more smoothly, which is beneficial for effectively correcting astigmatism and improving image quality. More specifically, F, R6, and R7 can further satisfy: |F / R6|+|F / R7|≤1.

[0120] In an exemplary embodiment, the optical lens according to this application satisfies the following condition: F / H ≤ 0.8. Here, F is the total effective focal length of the optical lens, and H is the image height corresponding to the maximum field of view of the optical lens. Satisfying F / H ≤ 0.8 with the optical lens is beneficial for improving image quality. More specifically, F and H can further satisfy: F / H ≤ 0.6.

[0121] In an exemplary embodiment, the optical lens according to this application satisfies: -6 ≤ F1 / d1 ≤ -1. Here, F1 is the effective focal length of the first lens, and d1 is the center thickness of the first lens. The optical lens satisfying -6 ≤ F1 / d1 ≤ -1 is beneficial for collecting light rays from a large field of view into the rear optical system, thus facilitating the realization of a large field of view. More specifically, F1 and d1 can further satisfy: -5.6 ≤ F1 / d1 ≤ -2.

[0122] In an exemplary embodiment, the optical lens according to this application satisfies the following condition: F / ENPD ≤ 1.59. Here, F is the total effective focal length of the optical lens, and ENPD is the entrance pupil diameter of the optical lens. Satisfying F / ENPD ≤ 1.59 allows the optical lens to have a large aperture, which is beneficial for increasing light transmission. More specifically, F and ENPD can further satisfy: F / ENPD ≤ 1.55.

[0123] In an exemplary embodiment, an aperture stop for converging light rays can be disposed between the second and third lenses to further improve the imaging quality of the optical lens. Positioning the aperture stop between the second and third lenses facilitates effective convergence of light rays entering the optical lens, reduces the lens aperture at the front of the optical lens, and lowers the assembly sensitivity of the optical lens. Simultaneously, since the first and second lenses emit divergent transitional light rays, a forward-positioned aperture stop is beneficial for achieving a large aperture. In this embodiment, the aperture stop can be disposed near the second side of the second lens or near the first side of the third lens. However, it should be noted that the positions of the aperture stop disclosed herein are merely examples and not limitations. In alternative embodiments, the aperture stop can also be disposed in other positions as needed. For example, it can be disposed at any position between the third lens and the imaging plane, and this arrangement helps to reduce the rear aperture and decrease the introduction of peripheral aberration rays into the rear optical elements, thereby improving resolving power.

[0124] In an exemplary embodiment, the first to seventh lenses can be spherical lenses or aspherical lenses. Exemplarily, the first and third to sixth lenses can be spherical lenses, while the second and seventh lenses can be aspherical lenses. Using aspherical lenses for the second and seventh lenses is beneficial for correcting aberrations in the optical lens and improving its resolving power. This application does not specifically limit the number of spherical and aspherical lenses; the number of aspherical lenses can be increased when image quality is a primary concern. Specifically, to improve the resolving quality of the optical system, both the second and seventh lenses can be aspherical lenses. Aspherical lenses are characterized by a continuously changing curvature from the lens center to the periphery. Unlike spherical lenses, which have a constant curvature from the lens center to the periphery, aspherical lenses have better radius of curvature characteristics, offering advantages in improving distortion aberrations and astigmatism. By using aspherical lenses, aberrations occurring during imaging can be eliminated as much as possible, thereby improving the image quality of the lens.

[0125] In an exemplary embodiment, the optical lens of this application may also include a filter and / or protective glass disposed between the seventh lens and the imaging surface, as needed, to filter light of different wavelengths and prevent damage to the image-side elements (e.g., chips) of the optical lens.

[0126] In an exemplary embodiment, the first lens, second lens, third lens, fourth lens, fifth lens, sixth lens, and seventh lens can all be glass lenses. Using glass avoids lens blurring caused by high and low temperature variations in the operating environment, thus preventing interference with normal lens use. Specifically, when image quality and reliability are paramount, the first to seventh lenses can all be aspherical glass lenses. Of course, in applications with lower temperature stability requirements, the first to seventh lenses in the optical lens can also be made of plastic. Using plastic to make optical lenses effectively reduces manufacturing costs. Alternatively, the first to seventh lenses in the optical lens can also be made of a combination of plastic and glass.

[0127] The optical lens according to the above embodiments of this application, through the reasonable setting of the shape and power of each lens, can have at least one beneficial effect such as miniaturization, large field of view, small distortion, weak ghosting, good temperature performance, high resolution, high light transmission and low cost when using only seven lenses.

[0128] However, those skilled in the art will understand that the number of lenses constituting the lens can be varied to obtain the various results and advantages described herein without departing from the technical solutions claimed in this application. For example, although seven lenses are described as an example in the embodiments, the optical lens is not limited to including seven lenses. If desired, the optical lens may also include other numbers of lenses.

[0129] Specific embodiments of the optical lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.

[0130] Example 1

[0131] The following is for reference Figure 1 The optical lens according to Embodiment 1 of this application is described. Figure 1 A schematic diagram of the structure of an optical lens according to Embodiment 1 of this application is shown.

[0132] like Figure 1 As shown, the optical lens includes, in sequence from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.

[0133] The first lens L1 is a meniscus lens with negative power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a meniscus lens with negative power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 is a biconvex lens with positive power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 is a biconvex lens with positive power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 is a biconcave lens with negative power, its first side surface S10 is concave, and its second side surface S11 is concave. The sixth lens L6 is a biconvex lens with positive power, its first side surface S11 is convex, and its second side surface S12 is convex. The seventh lens L7 is a meniscus lens with positive power, its first side surface S13 is convex, and its second side surface S14 is concave.

[0134] The optical lens may also include an aperture stop STO, which may be positioned between the second lens L2 and the third lens L3. For example, the aperture stop STO may be positioned close to the second side surface S4 of the second lens L2.

[0135] Exemplarily, the optical lens may further include auxiliary lenses L8 and L9 with no optical power. Auxiliary lens L8 may have a first side surface S15 and a second side surface S16, and auxiliary lens L9 may have a first side surface S17 and a second side surface S18. Optionally, auxiliary lenses L8 and L9 may be filters or protective glass. Filters may be used to correct color aberrations. Protective glass may be used to protect the image sensor chip IMA located at the imaging surface S19.

[0136] The optical lens provided in this application can be used, for example, as a vehicle side-view lens. At this time, light from the object passes through each surface S1 to S18 in sequence and is finally imaged on the imaging surface S19 disposed on the second side, wherein an image sensor chip IMA is disposed at the imaging surface S19.

[0137] Table 1 shows the radius of curvature R, thickness / distance d (it should be understood that the thickness d in the row where S1 is located is the center thickness d1 of the first lens L1 on the optical axis, the thickness d in the row where S2 is located is the distance d2 between the second side surface of the first lens L1 and the first side surface of the second lens L2 on the optical axis, and so on), refractive index Nd, and Abbe number Vd of each lens of the optical lens of Embodiment 1.

[0138]

[0139] Table 1

[0140] In Embodiment 1, the first side surface S3 and the second side surface S4 of the second lens L2 and the first side surface S13 and the second side surface S14 of the seventh lens L7 can all be aspherical surfaces. The surface shape x of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0141]

[0142] Where x is the distance vector from the vertex of the aspherical surface at a height h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the i-th order correction coefficient of the aspherical surface. Table 2 below gives the conic coefficient k and higher-order coefficients A4, A6, A8, A10, A12, A14 and A16 that can be used for the aspherical mirrors S3, S4, S13 and S14 in Example 1.

[0143] Face number k A4 A6 A8 A10 A12 A14 A16 S3 0.0200 -1.7452E-03 1.2847E-04 -3.5847E-05 3.9029E-06 -3.0423E-08 -1.3787E-08 -3.7712E-10 S4 -0.0100 -1.5478E-04 -5.4858E-06 1.4099E-06 1.6835E-07 9.2967E-09 -2.4004E-09 -1.9125E-10 S13 -5.0000 -5.8181E-03 -6.4523E-05 -4.1695E-05 8.7997E-06 -1.1979E-06 8.9958E-08 -2.3829E-09 S14 -75.0686 4.0475E-04 -1.4034E-03 2.5436E-04 -3.2169E-05 2.6189E-06 -1.1630E-07 2.1891E-09

[0144] Table 2

[0145] Example 2

[0146] The following is for reference Figure 2 An optical lens according to Embodiment 2 of this application is described. Figure 2 A schematic diagram of the structure of an optical lens according to Embodiment 2 of this application is shown.

[0147] like Figure 2 As shown, the optical lens includes, in sequence from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.

[0148] The first lens L1 is a meniscus lens with negative power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a meniscus lens with negative power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 is a biconvex lens with positive power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 is a biconvex lens with positive power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 is a biconcave lens with negative power, its first side surface S10 is concave, and its second side surface S11 is concave. The sixth lens L6 is a biconvex lens with positive power, its first side surface S11 is convex, and its second side surface S12 is convex. The seventh lens L7 is a meniscus lens with positive power, its first side surface S13 is convex, and its second side surface S14 is concave.

[0149] The optical lens may also include an aperture stop STO, which may be positioned between the second lens L2 and the third lens L3. For example, the aperture stop STO may be positioned close to the second side surface S4 of the second lens L2.

[0150] Exemplarily, the optical lens may further include auxiliary lenses L8 and L9 with no optical power. Auxiliary lens L8 may have a first side surface S15 and a second side surface S16, and auxiliary lens L9 may have a first side surface S17 and a second side surface S18. Optionally, auxiliary lenses L8 and L9 may be filters or protective glass. Filters may be used to correct color aberrations. Protective glass may be used to protect the image sensor chip IMA located at the imaging surface S19.

[0151] The optical lens provided in this application can be used, for example, as a vehicle side-view lens. At this time, light from the object passes through each surface S1 to S18 in sequence and is finally imaged on the imaging surface S19 disposed on the second side, wherein an image sensor chip IMA is disposed at the imaging surface S19.

[0152] Table 3 shows the radius of curvature R, thickness / distance d, refractive index Nd, and Abbe number Vd of each lens in the optical lens of Example 2. Table 4 shows the conic coefficients and higher-order coefficients that can be used for each aspherical mirror in Example 2, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0153]

[0154]

[0155] Table 3

[0156] Face number k A4 A6 A8 A10 A12 A14 A16 S3 0.0236 -1.6452E-03 1.3847E-04 -3.5847E-05 3.9029E-06 -3.0423E-08 -1.3787E-08 -3.7712E-10 S4 -0.0182 -1.6478E-04 -5.5858E-06 1.4099E-06 1.6835E-07 9.2967E-09 -2.4004E-09 -1.9125E-10 S13 -3.9208 -5.7181E-03 -6.5523E-05 -4.1695E-05 8.7997E-06 -1.1979E-06 8.9958E-08 -2.3829E-09 S14 -75.0686 3.9475E-04 -1.4034E-03 2.5436E-04 -3.2169E-05 2.6189E-06 -1.1630E-07 2.1891E-09

[0157] Table 4

[0158] Example 3

[0159] The following is for reference Figure 3 An optical lens according to Embodiment 3 of this application is described. Figure 3 A schematic diagram of the structure of an optical lens according to Embodiment 3 of this application is shown.

[0160] like Figure 3 As shown, the optical lens includes, in sequence from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.

[0161] The first lens L1 is a meniscus lens with negative power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a meniscus lens with negative power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 is a biconvex lens with positive power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 is a biconvex lens with positive power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 is a meniscus lens with negative power, its first side surface S10 is convex, and its second side surface S11 is concave. The sixth lens L6 is a biconvex lens with positive power, its first side surface S11 is convex, and its second side surface S12 is convex. The seventh lens L7 is a biconcave lens with negative power, its first side surface S13 is concave, and its second side surface S14 is concave.

[0162] The optical lens may also include an aperture stop STO, which may be positioned between the second lens L2 and the third lens L3. For example, the aperture stop STO may be positioned close to the first side surface S6 of the third lens L3.

[0163] Exemplarily, the optical lens may further include auxiliary lenses L8 and L9 with no optical power. Auxiliary lens L8 may have a first side surface S15 and a second side surface S16, and auxiliary lens L9 may have a first side surface S17 and a second side surface S18. Optionally, auxiliary lenses L8 and L9 may be filters or protective glass. Filters may be used to correct color aberrations. Protective glass may be used to protect the image sensor chip IMA located at the imaging surface S19.

[0164] The optical lens provided in this application can be used, for example, as a vehicle side-view lens. At this time, light from the object passes through each surface S1 to S18 in sequence and is finally imaged on the imaging surface S19 disposed on the second side, wherein an image sensor chip IMA is disposed at the imaging surface S19.

[0165] Table 5 shows the radius of curvature R, thickness / space d, refractive index Nd, and Abbe number Vd of each lens in the optical lens of Example 3. Table 6 shows the conic coefficients and higher-order coefficients that can be used for each aspherical mirror in Example 3, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0166]

[0167] Table 5

[0168] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -0.1000 -8.7006E-04 1.1564E-04 -2.7443E-05 4.1200E-06 -1.6000E-07 -3.0017E-08 2.6254E-09 S4 -1.6000 4.5977E-05 4.5720E-05 -2.0924E-06 -2.3357E-07 -1.3380E-08 7.6700E-09 -4.0200E-10 S6 70.0017 -8.6996E-03 5.1021E-05 -7.0446E-06 1.0930E-05 -1.4528E-06 4.6300E-08 1.8100E-09 S7 189.9596 -5.5199E-03 -5.9910E-04 2.5870E-04 -3.4737E-05 2.5712E-06 -9.2515E-08 1.2372E-09

[0169] Table 6

[0170] Example 4

[0171] The following is for reference Figure 4 An optical lens according to Embodiment 4 of this application is described. Figure 4 A schematic diagram of the structure of an optical lens according to Embodiment 4 of this application is shown.

[0172] like Figure 4 As shown, the optical lens includes, in sequence from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.

[0173] The first lens L1 is a meniscus lens with negative power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a meniscus lens with negative power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 is a biconvex lens with positive power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 is a biconvex lens with positive power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 is a meniscus lens with negative power, its first side surface S10 is convex, and its second side surface S11 is concave. The sixth lens L6 is a biconvex lens with positive power, its first side surface S11 is convex, and its second side surface S12 is convex. The seventh lens L7 is a biconcave lens with negative power, its first side surface S13 is concave, and its second side surface S14 is concave.

[0174] The optical lens may also include an aperture stop STO, which may be positioned between the second lens L2 and the third lens L3. For example, the aperture stop STO may be positioned close to the first side surface S6 of the third lens L3.

[0175] Exemplarily, the optical lens may further include auxiliary lenses L8 and L9 with no optical power. Auxiliary lens L8 may have a first side surface S15 and a second side surface S16, and auxiliary lens L9 may have a first side surface S17 and a second side surface S18. Optionally, auxiliary lenses L8 and L9 may be filters or protective glass. Filters may be used to correct color aberrations. Protective glass may be used to protect the image sensor chip IMA located at the imaging surface S19.

[0176] The optical lens provided in this application can be used, for example, as a vehicle side-view lens. At this time, light from the object passes through each surface S1 to S18 in sequence and is finally imaged on the imaging surface S19 disposed on the second side, wherein an image sensor chip IMA is disposed at the imaging surface S19.

[0177] Table 7 shows the radius of curvature R, thickness / space d, refractive index Nd, and Abbe number Vd of each lens in the optical lens of Example 4. Table 8 shows the conic coefficients and higher-order coefficients that can be used for each aspherical mirror in Example 4, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0178]

[0179]

[0180] Table 7

[0181] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -0.5330 -8.7006E-04 1.1564E-04 -2.7443E-05 4.1233E-06 -1.6001E-07 -3.0017E-08 2.6254E-09 S4 -0.3674 4.5977E-05 4.5724E-05 -2.0924E-06 -2.3357E-07 -1.3352E-08 7.6738E-09 -4.0287E-10 S6 7.0017 -8.6996E-03 5.1021E-05 -7.0446E-06 1.0969E-05 -1.4528E-06 4.6331E-08 1.8114E-09 S7 18.9596 -5.5199E-03 -5.9956E-04 2.5848E-04 -3.4737E-05 2.5712E-06 -9.2515E-08 1.2372E-09

[0182] Table 8

[0183] Example 5

[0184] The following is for reference Figure 5 An optical lens according to Embodiment 5 of this application is described. Figure 5 A schematic diagram of the structure of an optical lens according to Embodiment 5 of this application is shown.

[0185] like Figure 5 As shown, the optical lens includes, in sequence from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.

[0186] The first lens L1 is a meniscus lens with negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a meniscus lens with positive optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 is a biconvex lens with positive optical power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 is a meniscus lens with positive optical power, its first side surface S8 is convex, and its second side surface S9 is concave. The fifth lens L5 is a meniscus lens with negative optical power, its first side surface S10 is convex, and its second side surface S11 is concave. The sixth lens L6 is a biconvex lens with positive optical power, its first side surface S11 is convex, and its second side surface S12 is convex. The seventh lens L7 is a meniscus lens with positive optical power, its first side surface S13 is convex, and its second side surface S14 is concave.

[0187] The optical lens may also include an aperture stop STO, which may be positioned between the second lens L2 and the third lens L3. For example, the aperture stop STO may be positioned close to the first side surface S6 of the third lens L3.

[0188] Exemplarily, the optical lens may further include auxiliary lenses L8 and L9 with no optical power. Auxiliary lens L8 may have a first side surface S15 and a second side surface S16, and auxiliary lens L9 may have a first side surface S17 and a second side surface S18. Optionally, auxiliary lenses L8 and L9 may be filters or protective glass. Filters may be used to correct color aberrations. Protective glass may be used to protect the image sensor chip IMA located at the imaging surface S19.

[0189] The optical lens provided in this application can be used, for example, as a vehicle side-view lens. At this time, light from the object passes through each surface S1 to S18 in sequence and is finally imaged on the imaging surface S19 disposed on the second side, wherein an image sensor chip IMA is disposed at the imaging surface S19.

[0190] Table 9 shows the radius of curvature R, thickness / space d, refractive index Nd, and Abbe number Vd of each lens in the optical lens of Example 5. Table 10 shows the conic coefficients and higher-order coefficients that can be used for each aspherical mirror in Example 5, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0191]

[0192] Table 9

[0193] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -0.1108 -1.2428E-03 -1.8073E-04 -5.4389E-06 6.9770E-06 -3.5299E-07 -9.4099E-08 8.0598E-09 S4 0.1746 -1.8203E-04 1.6734E-05 -6.3022E-06 8.4298E-07 7.5270E-08 -2.2425E-08 1.1408E-09 S13 -0.0093 -4.4440E-03 6.4266E-05 -4.2347E-05 8.9050E-06 -1.2045E-06 9.0778E-08 -2.4939E-09 S14 -31.7094 4.3678E-03 -1.5518E-03 2.5027E-04 -3.1018E-05 2.6120E-06 -1.2640E-07 2.7302E-09

[0194] Table 10

[0195] Example 6

[0196] The following is for reference Figure 6 An optical lens according to Embodiment 6 of this application is described. Figure 6 A schematic diagram of the structure of an optical lens according to Embodiment 6 of this application is shown.

[0197] like Figure 6 As shown, the optical lens includes, in sequence from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.

[0198] The first lens L1 is a meniscus lens with negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a meniscus lens with positive optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 is a biconvex lens with positive optical power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 is a meniscus lens with positive optical power, its first side surface S8 is convex, and its second side surface S9 is concave. The fifth lens L5 is a meniscus lens with negative optical power, its first side surface S10 is convex, and its second side surface S11 is concave. The sixth lens L6 is a biconvex lens with positive optical power, its first side surface S11 is convex, and its second side surface S12 is convex. The seventh lens L7 is a meniscus lens with positive optical power, its first side surface S13 is convex, and its second side surface S14 is concave.

[0199] The optical lens may also include an aperture stop STO, which may be positioned between the second lens L2 and the third lens L3. For example, the aperture stop STO may be positioned close to the first side surface S6 of the third lens L3.

[0200] Exemplarily, the optical lens may further include auxiliary lenses L8 and L9 with no optical power. Auxiliary lens L8 may have a first side surface S15 and a second side surface S16, and auxiliary lens L9 may have a first side surface S17 and a second side surface S18. Optionally, auxiliary lenses L8 and L9 may be filters or protective glass. Filters may be used to correct color aberrations. Protective glass may be used to protect the image sensor chip IMA located at the imaging surface S19.

[0201] The optical lens provided in this application can be used, for example, as a vehicle side-view lens. At this time, light from the object passes through each surface S1 to S18 in sequence and is finally imaged on the imaging surface S19 disposed on the second side, wherein an image sensor chip IMA is disposed at the imaging surface S19.

[0202] Table 11 shows the radius of curvature R, thickness / space d, refractive index Nd, and Abbe number Vd of each lens in the optical lens of Example 6. Table 12 shows the conic coefficients and higher-order coefficients that can be used for each aspherical mirror in Example 6, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0203]

[0204] Table 11

[0205] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -0.1000 -1.2428E-03 -1.8073E-04 -5.4389E-06 6.9770E-06 -3.5200E-07 -9.4099E-08 8.0000E-09 S4 0.6000 -1.8203E-04 1.6734E-05 -6.3022E-06 8.4298E-07 7.5600E-08 -2.2425E-08 1.1408E-09 S13 -0.0090 -4.4440E-03 6.4266E-05 -4.2347E-05 8.9050E-06 -1.2000E-06 9.0778E-08 -2.4939E-09 S1 -40.0000 4.3678E-03 -1.5518E-03 2.5027E-04 -3.1018E-05 2.6120E-06 -1.2640E-07 2.7300E-09

[0206] Table 12

[0207] Example 7

[0208] The following is for reference Figure 7 An optical lens according to Embodiment 7 of this application is described. Figure 7 A schematic diagram of the structure of an optical lens according to Embodiment 7 of this application is shown.

[0209] like Figure 7 As shown, the optical lens includes, in sequence from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.

[0210] The first lens L1 is a meniscus lens with negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a meniscus lens with negative optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 is a biconvex lens with positive optical power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 is a biconvex lens with positive optical power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 is a biconvex lens with positive optical power, its first side surface S10 is convex, and its second side surface S11 is convex. The sixth lens L6 is a biconcave lens with negative optical power, its first side surface S11 is concave, and its second side surface S12 is concave. The seventh lens L7 is a biconvex lens with positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex.

[0211] The optical lens may also include an aperture stop STO, which may be positioned between the second lens L2 and the third lens L3. For example, the aperture stop STO may be positioned close to the first side surface S6 of the third lens L3.

[0212] Exemplarily, the optical lens may further include auxiliary lenses L8 and L9 with no optical power. Auxiliary lens L8 may have a first side surface S15 and a second side surface S16, and auxiliary lens L9 may have a first side surface S17 and a second side surface S18. Optionally, auxiliary lenses L8 and L9 may be filters or protective glass. Filters may be used to correct color aberrations. Protective glass may be used to protect the image sensor chip IMA located at the imaging surface S19.

[0213] The optical lens provided in this application can be used, for example, as a vehicle side-view lens. At this time, light from the object passes through each surface S1 to S18 in sequence and is finally imaged on the imaging surface S19 disposed on the second side, wherein an image sensor chip IMA is disposed at the imaging surface S19.

[0214] Table 13 shows the radius of curvature R, thickness / space d, refractive index Nd, and Abbe number Vd of each lens in the optical lens of Example 7. Table 14 shows the conic coefficients and higher-order coefficients that can be used for each aspherical mirror in Example 7, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0215]

[0216]

[0217] Table 13

[0218] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -0.0020 -3.0037E-03 2.9700E-04 -5.2931E-05 4.1705E-06 5.0237E-08 5.2030E-09 -2.5453E-09 S4 0.0023 9.2159E-04 1.4632E-04 -8.8365E-06 1.1480E-06 8.5329E-09 6.9400E-10 -4.1059E-10 S6 -5.8034 3.7847E-03 -4.2190E-04 3.0830E-05 3.5263E-06 -1.1757E-06 9.4300E-08 -2.6886E-09 S7 -22.0000 4.4619E-03 -9.6247E-04 2.2070E-04 -3.2500E-05 2.6064E-06 -1.1768E-07 2.3217E-09

[0219] Table 14

[0220] Example 8

[0221] The following is for reference Figure 8 An optical lens according to Embodiment 8 of this application is described. Figure 8 A schematic diagram of the structure of an optical lens according to Embodiment 8 of this application is shown.

[0222] like Figure 8 As shown, the optical lens includes, in sequence from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.

[0223] The first lens L1 is a meniscus lens with negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a meniscus lens with negative optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 is a biconvex lens with positive optical power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 is a biconvex lens with positive optical power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 is a biconvex lens with positive optical power, its first side surface S10 is convex, and its second side surface S11 is convex. The sixth lens L6 is a biconcave lens with negative optical power, its first side surface S11 is concave, and its second side surface S12 is concave. The seventh lens L7 is a biconvex lens with positive optical power, its first side surface S13 is convex, and its second side surface S14 is convex.

[0224] The optical lens may also include an aperture stop STO, which may be positioned between the second lens L2 and the third lens L3. For example, the aperture stop STO may be positioned close to the first side surface S6 of the third lens L3.

[0225] Exemplarily, the optical lens may further include auxiliary lenses L8 and L9 with no optical power. Auxiliary lens L8 may have a first side surface S15 and a second side surface S16, and auxiliary lens L9 may have a first side surface S17 and a second side surface S18. Optionally, auxiliary lenses L8 and L9 may be filters or protective glass. Filters may be used to correct color aberrations. Protective glass may be used to protect the image sensor chip IMA located at the imaging surface S19.

[0226] The optical lens provided in this application can be used, for example, as a vehicle side-view lens. At this time, light from the object passes through each surface S1 to S18 in sequence and is finally imaged on the imaging surface S19 disposed on the second side, wherein an image sensor chip IMA is disposed at the imaging surface S19.

[0227] Table 15 shows the radius of curvature R, thickness / space d, refractive index Nd, and Abbe number Vd of each lens in the optical lens of Example 8. Table 16 shows the conic coefficients and higher-order coefficients that can be used for each aspherical mirror in Example 8, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0228]

[0229] Table 15

[0230] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -0.0199 -3.0037E-03 2.9787E-04 -5.2931E-05 4.1705E-06 5.0237E-08 5.2030E-09 -2.5453E-09 S4 0.0009 9.2159E-04 1.4632E-04 -8.8365E-06 1.1487E-06 8.5329E-09 6.9484E-10 -4.1059E-10 S13 -5.8034 3.7847E-03 -4.2198E-04 3.0839E-05 3.5800E-06 -1.1757E-06 9.4338E-08 -2.6886E-09 S14 -50.2011 4.4619E-03 -9.6247E-04 2.2070E-04 -3.2200E-05 2.6064E-06 -1.1768E-07 2.3217E-09

[0231] Table 16

[0232] Example 9

[0233] The following is for reference Figure 9 An optical lens according to Embodiment 9 of this application is described. Figure 9 A schematic diagram of the structure of an optical lens according to Embodiment 9 of this application is shown.

[0234] like Figure 9 As shown, the optical lens includes, in sequence from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.

[0235] The first lens L1 is a meniscus lens with negative power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a meniscus lens with negative power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 is a biconvex lens with positive power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 is a biconvex lens with positive power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 is a biconcave lens with negative power, its first side surface S10 is concave, and its second side surface S11 is concave. The sixth lens L6 is a biconvex lens with positive power, its first side surface S11 is convex, and its second side surface S12 is convex. The seventh lens L7 is a meniscus lens with positive power, its first side surface S13 is convex, and its second side surface S14 is concave.

[0236] The optical lens may also include an aperture stop STO, which may be positioned between the second lens L2 and the third lens L3. For example, the aperture stop STO may be positioned close to the first side surface S6 of the third lens L3.

[0237] Exemplarily, the optical lens may further include auxiliary lenses L8 and L9 with no optical power. Auxiliary lens L8 may have a first side surface S15 and a second side surface S16, and auxiliary lens L9 may have a first side surface S17 and a second side surface S18. Optionally, auxiliary lenses L8 and L9 may be filters or protective glass. Filters may be used to correct color aberrations. Protective glass may be used to protect the image sensor chip IMA located at the imaging surface S19.

[0238] The optical lens provided in this application can be used, for example, as a vehicle side-view lens. At this time, light from the object passes through each surface S1 to S18 in sequence and is finally imaged on the imaging surface S19 disposed on the second side, wherein an image sensor chip IMA is disposed at the imaging surface S19.

[0239] Table 17 shows the radius of curvature R, thickness / space d, refractive index Nd, and Abbe number Vd of each lens in the optical lens of Example 9. Table 18 shows the conic coefficients and higher-order coefficients that can be used for each aspherical mirror in Example 9, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0240]

[0241] Table 17

[0242]

[0243]

[0244] Table 18

[0245] Example 10

[0246] The following is for reference Figure 10 An optical lens according to Embodiment 10 of this application is described. Figure 10 A schematic diagram of the structure of an optical lens according to Embodiment 10 of this application is shown.

[0247] like Figure 10 As shown, the optical lens includes, in sequence from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.

[0248] The first lens L1 is a meniscus lens with negative power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a meniscus lens with negative power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 is a biconvex lens with positive power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 is a biconvex lens with positive power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 is a biconcave lens with negative power, its first side surface S10 is concave, and its second side surface S11 is concave. The sixth lens L6 is a biconvex lens with positive power, its first side surface S11 is convex, and its second side surface S12 is convex. The seventh lens L7 is a meniscus lens with positive power, its first side surface S13 is convex, and its second side surface S14 is concave.

[0249] The optical lens may also include an aperture stop STO, which may be positioned between the second lens L2 and the third lens L3. For example, the aperture stop STO may be positioned close to the first side surface S6 of the third lens L3.

[0250] Exemplarily, the optical lens may further include auxiliary lenses L8 and L9 with no optical power. Auxiliary lens L8 may have a first side surface S15 and a second side surface S16, and auxiliary lens L9 may have a first side surface S17 and a second side surface S18. Optionally, auxiliary lenses L8 and L9 may be filters or protective glass. Filters may be used to correct color aberrations. Protective glass may be used to protect the image sensor chip IMA located at the imaging surface S19.

[0251] The optical lens provided in this application can be used, for example, as a vehicle side-view lens. At this time, light from the object passes through each surface S1 to S18 in sequence and is finally imaged on the imaging surface S19 disposed on the second side, wherein an image sensor chip IMA is disposed at the imaging surface S19.

[0252] Table 19 shows the radius of curvature R, thickness / space d, refractive index Nd, and Abbe number Vd of each lens in the optical lens of Example 10. Table 20 shows the conic coefficients and higher-order coefficients that can be used for each aspherical mirror in Example 10, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0253]

[0254]

[0255] Table 19

[0256] Face number k A4 A6 A8 A10 A12 A14 A16 S3 0.0395 -1.7181E-03 1.6810E-04 -3.9090E-05 3.0571E-06 4.9638E-08 5.4236E-09 -2.5579E-09 S4 -0.0136 -1.8135E-04 2.2252E-06 1.2919E-06 6.1130E-08 6.1382E-09 -1.0106E-09 -1.6275E-10 S13 -5.3872 -5.6999E-03 -2.7327E-05 -4.2442E-05 8.5790E-06 -1.1965E-06 9.1594E-08 -2.7224E-09 S14 -40.1483 1.3895E-04 -1.4030E-03 2.5458E-04 -3.2233E-05 2.6044E-06 -1.1763E-07 2.2915E-09

[0257] Table 20

[0258] In summary, Examples 1 to 10 satisfy the relationships shown in Table 21 below. In Table 21, the units for TTL, BFL, TL, H, D, F, F1, F2, F3, F4, F5, F6, F7, D2, D3, D4, D13, D14, SAG2, SAG3, SAG4, SAG13, SAG14, and ENPD are millimeters (mm), and the unit for FOV is degrees (°).

[0259]

[0260]

[0261] Table 21

[0262] This application also provides an electronic device that may include an optical lens according to the above embodiments of this application and an imaging element for converting an optical image formed by the optical lens into an electrical signal. The electronic device may be a stand-alone electronic device, such as a rangefinder camera, or an imaging module integrated into a rangefinder device. Furthermore, the electronic device may also be a stand-alone imaging device, such as an in-vehicle camera, or an imaging module integrated into a driver assistance system, such as a vehicle-mounted camera.

[0263] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An optical lens, characterized in that, Along the optical axis, from the first side to the second side, the following are included in sequence: A first lens with negative optical power has a first side surface that is convex and a second side surface that is concave. A second lens with optical power has a first concave side and a second convex side; A third lens with positive optical power has a first convex side and a second convex side. The fourth lens with positive optical power has a convex first side surface; Fifth lens; The sixth lens; and The seventh lens; The effective focal length F3 of the third lens and the effective focal length F4 of the fourth lens satisfy the following condition: 0.25 ≤ |F3 / F4| ≤ 1.15; The effective focal length F2 of the second lens and the total effective focal length F of the optical lens satisfy: |F2 / F|≥8; The total effective focal length F of the optical lens, the maximum field of view (FOV) of the optical lens, and the image height H corresponding to the maximum field of view satisfy: 45≤(FOV×F) / H≤65.

2. The optical lens according to claim 1, characterized in that, The second lens has positive or negative optical power.

3. The optical lens according to claim 1, characterized in that, The second side surface of the fourth lens is either convex or concave.

4. The optical lens according to claim 1, characterized in that, The fifth lens has negative optical power, and its second side surface is concave; and The sixth lens has positive optical power, and its first side surface is convex, and its second side surface is convex.

5. The optical lens according to claim 4, characterized in that, The first side surface of the fifth lens is either convex or concave.

6. The optical lens according to claim 1, characterized in that, The fifth lens has positive optical power, and its first side surface is convex, and its second side surface is convex; and The sixth lens has negative optical power, and its first side surface is concave, and its second side surface is concave.

7. The optical lens according to claim 1, characterized in that, The seventh lens has positive optical power, and its first side surface is convex.

8. The optical lens according to claim 7, characterized in that, The second side surface of the seventh lens is either convex or concave.

9. The optical lens according to claim 1, characterized in that, The seventh lens has negative optical power, and its first side surface is concave, and its second side surface is concave.

10. The optical lens according to claim 1, characterized in that, The fifth lens and the sixth lens form a cemented lens.

11. The optical lens according to any one of claims 1-10, characterized in that, The total length TTL of the optical lens and the total effective focal length F of the optical lens satisfy the following condition: 6.7556≤TTL / F≤10.

12. The optical lens according to any one of claims 1-10, characterized in that, The back focal length BFL of the optical lens and the distance TL between the first side surface of the first lens and the second side surface of the seventh lens on the optical axis satisfy: 0.1733≥BFL / TL≥0.

08.

13. The optical lens according to any one of claims 1-10, characterized in that, The maximum field of view (FOV) of the optical lens, the image height (H) corresponding to the maximum field of view, and the maximum aperture (D) of the first side of the first lens corresponding to the maximum field of view satisfy the following condition: 0.0103 ≤ D / H / FOV ≤ 0.

1.

14. The optical lens according to any one of claims 1-10, characterized in that, The maximum field of view θ of the optical lens, expressed in radians, the image height H corresponding to the maximum field of view, and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view satisfy: 0.5915≤D / H / θ≤1.

2.

15. The optical lens according to any one of claims 1-10, characterized in that, The total effective focal length F of the optical lens, the maximum field of view (FOV) of the optical lens, and the image height H corresponding to the maximum field of view satisfy: 51.3191≤(FOV×F) / H≤65.

16. The optical lens according to any one of claims 1-10, characterized in that, The total effective focal length F of the optical lens, the maximum field of view θ of the optical lens expressed in radians, and the image height H corresponding to the maximum field of view satisfy: |(HF×θ) / (F×θ)|≤0.

4.

17. The optical lens according to any one of claims 1-10, characterized in that, The effective focal length F2 of the second lens and the total effective focal length F of the optical lens satisfy: 163.9047≥|F2 / F|≥8.

18. The optical lens according to any one of claims 1-10, characterized in that, The effective focal length F7 of the seventh lens and the total effective focal length F of the optical lens satisfy: |F7 / F|≥1.

19. The optical lens according to any one of claims 1-10, characterized in that, The sagitta SAG3 of the first side surface of the second lens corresponding to the maximum field of view of the optical lens, the half-aperture D3 of the maximum light-transmitting aperture of the first side surface of the second lens corresponding to the maximum field of view, the sagitta SAG4 of the second side surface of the second lens corresponding to the maximum field of view, and the half-aperture D4 of the maximum light-transmitting aperture of the second side surface of the second lens corresponding to the maximum field of view satisfy: 0.3≤(SAG3 / D3) / (SAG4 / D4)≤3.

20. The optical lens according to any one of claims 1-10, characterized in that, The sagitta SAG13 of the first side surface of the seventh lens corresponding to the maximum field of view of the optical lens, the half-aperture D13 of the maximum light-transmitting aperture of the first side surface of the seventh lens corresponding to the maximum field of view, the sagitta SAG14 of the second side surface of the seventh lens corresponding to the maximum field of view, and the half-aperture D14 of the maximum light-transmitting aperture of the second side surface of the seventh lens corresponding to the maximum field of view satisfy: -0.5≤(SAG13 / D13) / (SAG14 / D14)≤15.

21. The optical lens according to any one of claims 1-10, characterized in that, The sag SAG2 of the second side surface of the first lens corresponding to the maximum field of view of the optical lens, the half-aperture D2 of the maximum light-transmitting aperture of the second side surface of the first lens corresponding to the maximum field of view, and the radius of curvature R2 of the second side surface of the first lens satisfy: 0.7≤arctan(D2 / (R2-SAG2))≤3.

22. The optical lens according to any one of claims 1-10, characterized in that, The sag SAG3 corresponding to the first side surface of the second lens corresponding to the maximum field of view of the optical lens, the half-aperture D3 of the maximum light-transmitting aperture of the first side surface of the second lens corresponding to the maximum field of view, and the radius of curvature R3 of the first side surface of the second lens satisfy: -3≤arctan(D3 / (R3-SAG3))≤0.

23. The optical lens according to any one of claims 1-10, characterized in that, The distance d2 between the first lens and the second lens and the total length TTL of the optical lens satisfy the following condition: 0.09≤d2 / TTL≤0.

2.

24. The optical lens according to any one of claims 10, characterized in that, The effective focal length F(+) of the cemented lens with positive power and the effective focal length F(-) of the cemented lens with negative power satisfy: 0.1≤|F(+) / F(-)|≤4.

25. The optical lens according to any one of claims 10, characterized in that, The refractive index Vd(+) of the positive power lens in the cemented lens and the Abbe number Nd(+) of the positive power lens in the cemented lens satisfy the following condition: 26≤Vd(+) / Nd(+)≤53.

26. The optical lens according to any one of claims 1-10, characterized in that, The effective focal length F3 of the third lens and the effective focal length F4 of the fourth lens satisfy the following condition: 0.25≤|F3 / F4|≤1.0316.

27. The optical lens according to any one of claims 1-10, characterized in that, The total effective focal length F of the optical lens, the radius of curvature R3 of the first side surface of the second lens, and the radius of curvature R4 of the second side surface of the second lens satisfy: 0.9408≤|F / R3|+|F / R4|≤2.

28. The optical lens according to any one of claims 1-10, characterized in that, The total effective focal length F of the optical lens, the radius of curvature R6 of the first side surface of the third lens, and the radius of curvature R7 of the second side surface of the third lens satisfy: 0.3277≤|F / R6|+|F / R7|≤1.

2.

29. The optical lens according to any one of claims 1-10, characterized in that, The total effective focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.3948≤F / H≤0.

6.

30. The optical lens according to any one of claims 1-10, characterized in that, The effective focal length F1 of the first lens and the center thickness d1 of the first lens satisfy: -6≤F1 / d1≤-1.

31. The optical lens according to claim 30, characterized in that, The effective focal length F1 of the first lens and the center thickness d1 of the first lens satisfy the following condition: -5.6≤F1 / d1≤-2.

32. The optical lens according to any one of claims 1-10, characterized in that, The total effective focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following condition: 1.0000≤F / ENPD≤1.

59.

33. The optical lens according to claim 1, characterized in that, The optical lens satisfies at least one of the following conditions: 6.7556≤TTL / F≤7.8929 0.1733≥BFL / TL≥0.1482, 0.0103≤D / H / FOV≤0.0129 0.5915≤D / H / θ≤0.7411 51.3191≤(FOV×F) / H≤63.3387, |(HF×θ) / (F×θ)|≤0.1165, 163.9047≥|F2 / F|≥11.9763, 73.7297≥|F7 / F|≥2, 0.8706≤(SAG3 / D3) / (SAG4 / D4)≤1.9821, 0.2800≤(SAG13 / D13) / (SAG14 / D14)≤9.0087, 0.9488≤arctan(D2 / (R2-SAG2))≤1.2678, -0.6082≤arctan(D3 / (R3-SAG3))≤-0.4198, 0.1495≤d² / TTL≤0.1696 0.5 ≤ |F(+) / F(-)| ≤ 1.9688 31.4466≤Vd(+) / Nd(+)≤42.5651, 0.4145≤|F3 / F4|≤1.0316, 0.9408≤|F / R3|+|F / R4|≤1.1283, 0.3277≤|F / R6|+|F / R7|≤0.4513, 0.3948≤F / H≤0.4872 -5.2699≤F1 / d1≤-3.2986, 1.0000≤F / ENPD≤1.5000 Wherein, TTL is the total length of the optical lens, F is the total effective focal length of the optical lens, BFL is the back focal length of the optical lens, TL is the distance between the first side surface of the first lens and the second side surface of the seventh lens on the optical axis, FOV is the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view, D is the maximum aperture of the first side surface of the first lens corresponding to the maximum field of view, θ is the maximum field of view of the optical lens expressed in radians, F2 is the effective focal length of the second lens, F7 is the effective focal length of the seventh lens, and SAG3 is the maximum field of view of the optical lens. The corresponding sag of the first side surface of the second lens, D3 is half the maximum aperture of the first side surface of the second lens corresponding to the maximum field of view, SAG4 is the corresponding sag of the second side surface of the second lens corresponding to the maximum field of view, D4 is half the maximum aperture of the second side surface of the second lens corresponding to the maximum field of view, SAG13 is the corresponding sag of the first side surface of the seventh lens corresponding to the maximum field of view, D13 is half the maximum aperture of the first side surface of the seventh lens corresponding to the maximum field of view, SAG14 ... half the maximum aperture of the first side surface of the seventh lens corresponding to the maximum field of view, D13 is half the maximum aperture of the first side surface of the seventh lens corresponding to the maximum field of view, SAG14 is half the The corresponding sag of the second side surface of the seventh lens, D14 is half the aperture of the maximum light-transmitting diameter of the second side surface of the seventh lens corresponding to the maximum field of view, SAG2 is the sag of the second side surface of the first lens corresponding to the maximum field of view of the optical lens, D2 is half the aperture of the maximum light-transmitting diameter of the second side surface of the first lens corresponding to the maximum field of view, R2 is the radius of curvature of the second side surface of the first lens, R3 is the radius of curvature of the first side surface of the second lens, d2 is the spacing between the first lens and the second lens, the fifth lens and the sixth lens form a cemented lens, F(+) F(-) is the effective focal length of the positive-power lens in the cemented lens, F(-) is the effective focal length of the negative-power lens in the cemented lens, Vd(+) is the refractive index of the positive-power lens in the cemented lens, Nd(+) is the Abbe number of the positive-power lens in the cemented lens, F3 is the effective focal length of the third lens, F4 is the effective focal length of the fourth lens, R4 is the radius of curvature of the second side surface of the second lens, R6 is the radius of curvature of the first side surface of the third lens, R7 is the radius of curvature of the second side surface of the third lens, F1 is the effective focal length of the first lens, and d1 is the center thickness of the first lens.

34. An optical lens, characterized in that, Along the optical axis, from the first side to the second side, the lens includes, in sequence: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens, wherein, The first lens has negative optical power; The third and fourth lenses have positive optical power; and The total effective focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy the following condition: 1.0000≤F / ENPD≤1.59; The effective focal length F3 of the third lens and the effective focal length F4 of the fourth lens satisfy the following condition: 0.1≤|F3 / F4|≤1.

15.

35. The optical lens according to claim 34, characterized in that, The first side of the first lens is convex, and the second side is concave.

36. The optical lens according to claim 34, characterized in that, The second lens has positive or negative optical power, and the first side of the second lens is concave and the second side is convex.

37. The optical lens according to claim 34, characterized in that, The first side surface of the third lens is convex, and the second side surface is convex.

38. The optical lens according to claim 34, characterized in that, The first side of the fourth lens is convex, and the second side is either convex or concave.

39. The optical lens according to claim 34, characterized in that, The fifth lens has negative optical power, and its second side surface is concave; and The sixth lens has positive optical power, and its first side surface is convex, and its second side surface is convex.

40. The optical lens according to claim 39, characterized in that, The first side surface of the fifth lens is either convex or concave.

41. The optical lens according to claim 34, characterized in that, The fifth lens has positive optical power, and its first side surface is convex, and its second side surface is convex; and The sixth lens has negative optical power, and its first side surface is concave, and its second side surface is concave.

42. The optical lens according to claim 34, characterized in that, The seventh lens has positive optical power, and its first side surface is convex.

43. The optical lens according to claim 42, characterized in that, The second side surface of the seventh lens is either convex or concave.

44. The optical lens according to claim 34, characterized in that, The seventh lens has negative optical power, and its first side surface is concave, and its second side surface is concave.

45. The optical lens according to claim 34, characterized in that, The fifth lens and the sixth lens form a cemented lens.

46. ​​The optical lens according to any one of claims 34-45, characterized in that, The total length TTL of the optical lens satisfies: 6.7556≤TTL / F≤10.

47. The optical lens according to any one of claims 34-45, characterized in that, The back focal length BFL of the optical lens and the distance TL between the first side surface of the first lens and the second side surface of the seventh lens on the optical axis satisfy: 0.1733≥BFL / TL≥0.

08.

48. The optical lens according to any one of claims 34-45, characterized in that, The maximum field of view (FOV) of the optical lens, the image height (H) corresponding to the maximum field of view, and the maximum aperture (D) of the first side of the first lens corresponding to the maximum field of view satisfy the following condition: 0.0103 ≤ D / H / FOV ≤ 0.

1.

49. The optical lens according to any one of claims 34-45, characterized in that, The maximum field of view θ of the optical lens, expressed in radians, the image height H corresponding to the maximum field of view, and the maximum aperture D of the first side of the first lens corresponding to the maximum field of view satisfy: 0.5915≤D / H / θ≤1.

2.

50. The optical lens according to any one of claims 34-45, characterized in that, The maximum field of view (FOV) of the optical lens and the corresponding image height (H) satisfy the following condition: 40 ≤ (FOV × F) / H ≤ 90.

51. The optical lens according to any one of claims 34-45, characterized in that, The maximum field of view θ of the optical lens, expressed in radians, and the image height H corresponding to the maximum field of view satisfy: |(HF×θ) / (F×θ)|≤0.

4.

52. The optical lens according to any one of claims 34-45, characterized in that, The effective focal length F2 of the second lens satisfies: |F2 / F|≥3.

53. The optical lens according to any one of claims 34-45, characterized in that, The effective focal length F7 of the seventh lens satisfies: |F7 / F|≥1.

54. The optical lens according to any one of claims 34-45, characterized in that, The sagitta SAG3 of the first side surface of the second lens corresponding to the maximum field of view of the optical lens, the half-aperture D3 of the maximum light-transmitting aperture of the first side surface of the second lens corresponding to the maximum field of view, the sagitta SAG4 of the second side surface of the second lens corresponding to the maximum field of view, and the half-aperture D4 of the maximum light-transmitting aperture of the second side surface of the second lens corresponding to the maximum field of view satisfy: 0.3≤(SAG3 / D3) / (SAG4 / D4)≤3.

55. The optical lens according to any one of claims 34-45, characterized in that, The sagitta SAG13 of the first side surface of the seventh lens corresponding to the maximum field of view of the optical lens, the half-aperture D13 of the maximum light-transmitting aperture of the first side surface of the seventh lens corresponding to the maximum field of view, the sagitta SAG14 of the second side surface of the seventh lens corresponding to the maximum field of view, and the half-aperture D14 of the maximum light-transmitting aperture of the second side surface of the seventh lens corresponding to the maximum field of view satisfy: -0.5≤(SAG13 / D13) / (SAG14 / D14)≤15.

56. The optical lens according to any one of claims 34-45, characterized in that, The sag SAG2 of the second side surface of the first lens corresponding to the maximum field of view of the optical lens, the half-aperture D2 of the maximum light-transmitting aperture of the second side surface of the first lens corresponding to the maximum field of view, and the radius of curvature R2 of the second side surface of the first lens satisfy: 0.7≤arctan(D2 / (R2-SAG2))≤3.

57. The optical lens according to any one of claims 34-45, characterized in that, The sag SAG3 corresponding to the first side surface of the second lens corresponding to the maximum field of view of the optical lens, the half-aperture D3 of the maximum light-transmitting aperture of the first side surface of the second lens corresponding to the maximum field of view, and the radius of curvature R3 of the first side surface of the second lens satisfy: -3≤arctan(D3 / (R3-SAG3))≤0.

58. The optical lens according to any one of claims 34-45, characterized in that, The distance d2 between the first lens and the second lens and the total length TTL of the optical lens satisfy the following condition: 0.09≤d2 / TTL≤0.

2.

59. The optical lens according to claim 45, characterized in that, The effective focal length F(+) of the cemented lens with positive power and the effective focal length F(-) of the cemented lens with negative power satisfy: 0.1≤|F(+) / F(-)|≤4.

60. The optical lens according to claim 45, characterized in that, The refractive index Vd(+) of the positive power lens in the cemented lens and the Abbe number Nd(+) of the positive power lens in the cemented lens satisfy the following condition: 26≤Vd(+) / Nd(+)≤53.

61. The optical lens according to any one of claims 34-45, characterized in that, The effective focal length F3 of the third lens and the effective focal length F4 of the fourth lens satisfy the following condition: 0.25≤|F3 / F4|≤1.

15.

62. The optical lens according to any one of claims 34-45, characterized in that, The radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy: 0.9408≤|F / R3|+|F / R4|≤2.

63. The optical lens according to any one of claims 34-45, characterized in that, The radius of curvature R6 of the first side surface of the third lens and the radius of curvature R7 of the second side surface of the third lens satisfy: 0.3277≤|F / R6|+|F / R7|≤1.

2.

64. The optical lens according to any one of claims 34-45, characterized in that, The image height H corresponding to the maximum field of view of the optical lens satisfies: 0.3948≤F / H≤0.

6.

65. The optical lens according to any one of claims 34-45, characterized in that, The effective focal length F1 of the first lens and the center thickness d1 of the first lens satisfy: -6≤F1 / d1≤-1.

66. The optical lens according to claim 65, characterized in that, The effective focal length F1 of the first lens and the center thickness d1 of the first lens satisfy the following condition: -5.6≤F1 / d1≤-2.

67. The optical lens according to claim 34, characterized in that, The optical lens satisfies at least one of the following conditions: 6.7556≤TTL / F≤7.8929 0.1733≥BFL / TL≥0.1482, 0.0103≤D / H / FOV≤0.0129 0.5915≤D / H / θ≤0.7411 51.3191≤(FOV×F) / H≤65, |(HF×θ) / (F×θ)|≤0.1165, 163.9047≥|F2 / F|≥8, 73.7297≥|F7 / F|≥2, 0.8706≤(SAG3 / D3) / (SAG4 / D4)≤1.9821, 0.2800≤(SAG13 / D13) / (SAG14 / D14)≤9.0087, 0.9488≤arctan(D2 / (R2-SAG2))≤1.2678, -0.6082≤arctan(D3 / (R3-SAG3))≤-0.4198, 0.1495≤d² / TTL≤0.1696 0.5 ≤ |F(+) / F(-)| ≤ 1.9688 31.4466≤Vd(+) / Nd(+)≤42.5651, 0.4145≤|F3 / F4|≤1.0316, 0.9408≤|F / R3|+|F / R4|≤1.1283, 0.3277≤|F / R6|+|F / R7|≤0.4513, 0.3948≤F / H≤0.4872 -5.2699≤F1 / d1≤-3.2986, 1.0000≤F / ENPD≤1.5000 Wherein, TTL is the total length of the optical lens, F is the total effective focal length of the optical lens, BFL is the back focal length of the optical lens, TL is the distance between the first side surface of the first lens and the second side surface of the seventh lens on the optical axis, FOV is the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view, D is the maximum aperture of the first side surface of the first lens corresponding to the maximum field of view, θ is the maximum field of view of the optical lens expressed in radians, F2 is the effective focal length of the second lens, F7 is the effective focal length of the seventh lens, and SAG3 is the maximum field of view of the optical lens. The corresponding sag of the first side surface of the second lens, D3 is half the maximum aperture of the first side surface of the second lens corresponding to the maximum field of view, SAG4 is the corresponding sag of the second side surface of the second lens corresponding to the maximum field of view, D4 is half the maximum aperture of the second side surface of the second lens corresponding to the maximum field of view, SAG13 is the corresponding sag of the first side surface of the seventh lens corresponding to the maximum field of view, D13 is half the maximum aperture of the first side surface of the seventh lens corresponding to the maximum field of view, SAG14 ... half the maximum aperture of the first side surface of the seventh lens corresponding to the maximum field of view, D13 is half the maximum aperture of the first side surface of the seventh lens corresponding to the maximum field of view, SAG14 is half the The corresponding sag of the second side surface of the seventh lens, D14 is half the aperture of the maximum light-transmitting diameter of the second side surface of the seventh lens corresponding to the maximum field of view, SAG2 is the sag of the second side surface of the first lens corresponding to the maximum field of view of the optical lens, D2 is half the aperture of the maximum light-transmitting diameter of the second side surface of the first lens corresponding to the maximum field of view, R2 is the radius of curvature of the second side surface of the first lens, R3 is the radius of curvature of the first side surface of the second lens, d2 is the spacing between the first lens and the second lens, the fifth lens and the sixth lens form a cemented lens, F(+) F(-) is the effective focal length of the positive-power lens in the cemented lens, F(-) is the effective focal length of the negative-power lens in the cemented lens, Vd(+) is the refractive index of the positive-power lens in the cemented lens, Nd(+) is the Abbe number of the positive-power lens in the cemented lens, F3 is the effective focal length of the third lens, F4 is the effective focal length of the fourth lens, R4 is the radius of curvature of the second side surface of the second lens, R6 is the radius of curvature of the first side surface of the third lens, R7 is the radius of curvature of the second side surface of the third lens, F1 is the effective focal length of the first lens, and d1 is the center thickness of the first lens.

68. An electronic device, characterized in that, It includes an optical lens according to any one of claims 1 to 67 and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

Images