Optical lens and electronic equipment

Abstract

The utility model discloses an optical lens and electronic equipment. The optical lens sequentially comprises seven lenses with focal power from a first side to a second side along an optical axis: a first lens with negative focal power, the first side surface of which is a convex surface and the second side surface of which is a concave surface; the first side surface of the second lens is a concave surface, and the second side surface of the second lens is a convex surface; the third lens has positive focal power, and the second side surface of the third lens is a convex surface; the second side surface of the fourth lens is a convex surface, and the second side surface of the fourth lens is a convex surface; the first side surface of the fifth lens is a convex surface, and the second side surface of the fifth lens is a concave surface; the second side surface of the sixth lens is a convex surface, and the second side surface of the sixth lens is a convex surface; the seventh lens has positive focal power; the optical lens satisfies the following conditions: 15 < = F2 / F, 15 < = F7 / F, and-2 < = R42 / R51lt; 0.

Description

Technical Field

[0001] The present application relates to the field of optical elements, and more specifically, to an optical lens and an electronic device. Background Art

[0002] With the continuous progress of science and technology and the continuous development of society, the market has higher and higher requirements for optical lenses used in various scenarios, especially for lenses used in vehicles. Vehicle lenses are key components for automatic driving assistance systems to obtain external information. With the rapid development of automatic driving assistance systems, the market has higher and higher requirements for vehicle lenses. For example, in order to meet the requirements of safe driving and special installation positions, compared with ordinary optical lenses, the contrast of the images processed by the camera modules of vehicle lenses in automatic driving assistance systems is getting higher and higher, and ghost images of the same energy level are also more obvious, which can easily lead to misjudgment of intelligent driving systems. However, the optical lenses in related technologies are difficult to meet the requirements of low ghost image energy levels under high contrast. Utility Model Content

[0003] In one aspect of the present application, an optical lens is provided, which includes, in order from the first side to the second side along the optical axis: a first lens with negative optical power, whose first side surface is convex and whose second side surface is concave; a second lens with positive optical power, whose first side surface is concave and whose second side surface is convex; a third lens with positive optical power, whose second side surface is convex; a fourth lens with positive optical power, whose second side surface is convex and whose second side surface is convex; a fifth lens with negative optical power, whose first side surface is convex and whose second side surface is concave; a sixth lens with positive optical power, whose second side surface is convex and whose second side surface is convex; and a seventh lens with positive optical power; the optical lens satisfies: 15≤F2 / F, 15≤F7 / F, -2≤R42 / R51<0, wherein F is the total effective focal length of the optical lens, F2 is the effective focal length of the second lens, F7 is the effective focal length of the seventh lens, R42 is the curvature radius of the second side surface of the fourth lens, and R51 is the curvature radius of the first side surface of the fifth lens. The optical lens provided by the embodiments of the present application can achieve at least one of good sensitivity, low ghost images and high resolution.

[0004] In one embodiment, the first side surface of the third lens is a convex surface, a flat surface, or a concave surface.

[0005] In one embodiment, the first side surface of the seventh lens is convex, and the second side surface is concave, or the first side surface is concave, and the second side surface is convex.

[0006] In one embodiment, the optical lens satisfies: -15≤R51 / R62≤-0.2, wherein R51 is the radius of curvature of the first side surface of the fifth lens, and R62 is the radius of curvature of the second side surface of the sixth lens.

[0007] In one embodiment, the optical lens satisfies: -0.03≤max(Sag71, Sag72) / TTL<0, wherein Sag71 is the sag height of the first side surface of the seventh lens, Sag72 is the sag height of the second side surface of the seventh lens, and TTL is the total optical length of the optical lens.

[0008] In one embodiment, the optical lens satisfies: 15≤|F56 / F|, wherein F is the total effective focal length of the optical lens, and F56 is the combined focal length of the fifth lens and the sixth lens.

[0009] In one embodiment, the optical lens satisfies: 4.5≤TTL / F≤7.5, wherein TTL is the total optical length of the optical lens, and F is the total effective focal length of the optical lens.

[0010] In one embodiment, the optical lens satisfies: |H / (F*θ)-1|≤0.04, wherein θ is the radian value corresponding to the maximum field angle of the optical lens, H is the image height corresponding to the maximum field angle of the optical lens, and F is the total effective focal length of the optical lens.

[0011] In one embodiment, the optical lens satisfies: D / H / FOV≤0.015, wherein D is the maximum light clearance aperture of the first side surface of the first lens corresponding to 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 FOV is the maximum field of view of the optical lens.

[0012] In one embodiment, the optical lens satisfies: |Sag21-Sag22| / d2≤0.55, wherein Sag21 is the sag height of the first side surface of the second lens, Sag22 is the sag height of the second side surface of the second lens, and d2 is the center thickness of the second lens.

[0013] In one embodiment, the optical lens satisfies: |Sag71-Sag72| / d7≤0.5, wherein Sag71 is the sag height of the first side surface of the seventh lens, Sag72 is the sag height of the second side surface of the seventh lens, and d7 is the central thickness of the seventh lens.

[0014] In one embodiment, the optical lens satisfies at least one of the following: 0.005 ≤ d34 / TTL ≤ 0.1, |ΔPg,F(5) - ΔPg,F(6)| ≤ 0.03, -4 ≤ F1 / F < 0, 0 < R11 / TTL ≤ 1.5, 1.2 ≤ F3 / F ≤ 5, 1.5 ≤ F4 / F ≤ 4, 0.14 ≤ (d5 + d6) / TTL ≤ 0.24, where F is the total effective focal length of the optical lens, F1 is the effective focal length of the first lens, F3 is the effective focal length of the third lens, F4 is the effective focal length of the fourth lens, d34 is the distance between the centers of the third lens and the fourth lens along the optical axis, TTL is the overall optical length of the optical lens, ΔPg,F(5) is the secondary spectrum coefficient of the fifth lens, ΔPg,F(6) is the secondary spectrum coefficient of the sixth lens, R11 is the radius of curvature of the first surface of the first lens, d5 is the central thickness of the fifth lens, and d6 is the central thickness of the sixth lens.

[0015] In one embodiment, the optical lens satisfies at least one of the following: -11.5≤R51 / R62≤-3, 20≤F2 / F≤520, 20≤F7 / F≤260, -0.02≤max(Sag71,Sag72) / TTL≤-0.002, -1.05≤R42 / R51≤-0.2, 20≤|F56 / F|, 6≤TTL / F≤7, 0.1≤|Sag21-Sag22| / d2≤0.45, 0.01≤|Sag71-Sag72| / d7≤0.2, 0.01≤d34 / TTL≤0.0 5, |ΔPg,F(5)-ΔPg,F(6)|≤0.01, 0.0012≤|H / (F*θ)-1|≤0.02, 0.005≤D / H / FOV≤0.012, -2≤F1 / F≤-0.05, 0.55≤R11 / TTL≤1, 2.5≤F3 / F≤4.3, 2.5≤F4 / F≤3.3, 0.17≤(d5+d6) / TTL≤0.2, where F is the total effective focal length of the optical lens, F1 is the effective focal length of the first lens, F2 is the effective focal length of the second lens, F3 is the effective focal length of the third lens, and F4 is The effective focal length of the fourth lens, F7 is the effective focal length of the seventh lens, F56 is the combined focal length of the fifth lens and the sixth lens, d34 is the distance between the centers of the third lens and the fourth lens along the optical axis, TTL is the total optical length of the optical lens, D is the maximum aperture of the first side of the first lens corresponding to 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, FOV is the maximum field of view of the optical lens, θ is the radian value corresponding to the maximum field of view of the optical lens, Sag21 is the sagittal height of the first side of the second lens, Sag22 is the sagittal height of the second side of the second lens, Sa g71 is the sag height of the first side surface of the seventh lens, Sag72 is the sag height of the second side surface of the seventh lens, ΔPg,F(5) is the secondary spectral coefficient of the fifth lens, ΔPg,F(6) is the secondary spectral coefficient of the sixth lens, R11 is the radius of curvature of the first side surface of the first lens, d2 is the center thickness of the second lens, d5 is the center thickness of the fifth lens, d6 is the center thickness of the sixth lens, d7 is the center thickness of the seventh lens, R42 is the radius of curvature of the second side surface of the fourth lens, R51 is the radius of curvature of the first side surface of the fifth lens, and R62 is the radius of curvature of the second side surface of the sixth lens.

[0016] In one embodiment, the optical lens satisfies at least one of the following: -9.8144≤R51 / R62≤-4.6516, 21.5431≤F2 / F≤319.2785, 21.5667≤F7 / F≤165.3928, -0.0133≤max(Sag71,Sag72) / TTL≤-0.0023, -0.757≤R42 / R51≤-0.2405, 31.5882≤|F56 / F|≤598.5934, 6.7653≤TTL / F≤6.8577, 0.1542≤|Sag21-Sag22| / d2≤0.3639, 0.03≤|Sag71-Sag72| / d2≤0.3639 ag71-Sag72| / d7≤0.1567, 0.0079≤d34 / TTL≤0.0327, 0.005≤|ΔPg,F(5)-ΔPg,F(6)|≤0.0055, 0.0028≤|H / (F*θ)-1|≤0.014, 0.0087≤D / H / FOV ≤0.0094, -1.6241≤F1 / F≤-1.5308, 0.6173≤R11 / TTL≤0.8131, 2.7265≤F3 / F≤3.796, 2.6075≤F4 / F≤3.0884, 0.1791≤(d5+d6) / TTL≤0.1919, where, F is the total effective focal length of the optical lens, F1 is the effective focal length of the first lens, F2 is the effective focal length of the second lens, F3 is the effective focal length of the third lens, F4 is the effective focal length of the fourth lens, F7 is the effective focal length of the seventh lens, F56 is the combined focal length of the fifth lens and the sixth lens, d34 is the distance between the centers of the third lens and the fourth lens along the optical axis, TTL is the total optical length of the optical lens, D is the maximum aperture of the first side of the first lens corresponding to 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, FOV is the maximum field of view of the optical lens, θ is the radian value corresponding to the maximum field of view of the optical lens, Sag21 is the first The sag height of the side surface, Sag22 is the sag height of the second side surface of the second lens, Sag71 is the sag height of the first side surface of the seventh lens, Sag72 is the sag height of the second side surface of the seventh lens, ΔPg,F(5) is the secondary spectral coefficient of the fifth lens, ΔPg,F(6) is the secondary spectral coefficient of the sixth lens, R11 is the radius of curvature of the first side surface of the first lens, d2 is the center thickness of the second lens, d5 is the center thickness of the fifth lens, d6 is the center thickness of the sixth lens, d7 is the center thickness of the seventh lens, R42 is the radius of curvature of the second side surface of the fourth lens, R51 is the radius of curvature of the first side surface of the fifth lens, and R62 is the radius of curvature of the second side surface of the sixth lens.

[0017] Another aspect of the present application provides an electronic device, comprising the optical lens of any of the above embodiments, and comprising an imaging element for converting an optical image formed by the optical lens into an electrical signal, or comprising a light source. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, purposes and advantages of the present application will become more apparent through the following detailed description of the embodiments in conjunction with the accompanying drawings. In the accompanying drawings:

[0019] Figures 1 to 10 Schematic diagrams of the structures of optical lenses according to Embodiments 1 to 10 of the present application are respectively shown;

[0020] Fig.11 shows a diagram showing a weak ghost energy level effect of an optical lens provided according to an embodiment of the present application; and

[0021] Fig.12 A schematic diagram of the MTF curve of the central field light of the optical lens of Example 1 is shown. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and do not limit the scope of the present application in any way. Throughout the specification, the same figure numbers refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0023] It should be noted that in this specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teaching of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0024] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for ease of explanation. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the shapes of the spherical or aspherical surfaces shown in the drawings. The drawings are only examples and are not drawn strictly to scale.

[0025] It should be noted that the optical lenses provided in Examples 1 to 10 of the present application can all achieve good imaging quality, and their MTF (modulation transfer function) curve diagrams are relatively close. Therefore, the present application only exemplarily shows the MTF (modulation transfer function) curve diagram of the central field light of the optical lens of Example 1, and the MTF (modulation transfer function) curve diagrams of the central field light of the optical lenses of other embodiments are no longer shown one by one, and those skilled in the art should be able to know them based on the content disclosed in this application. In addition, the optical lenses provided in the embodiments of the present application can also achieve the technical effect of weak ghost images. The optical lenses provided in Examples 1 to 10 of the present application can all achieve the effect in the weak ghost image energy level effect diagram of the optical lenses provided in the embodiments of the present application.

[0026] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the first side is called the first side surface of the lens, the surface of each lens closest to the second side is called the second side surface of the lens, and the surface of the optical lens closest to the second side is called the second side surface of the optical lens.

[0027] It should be understood that the optical lens provided in the present application can be used for both video recording and projection. When the optical lens provided in the present application is used for a video recording lens, the "first side" referred to in this article may refer to the object side, and the "second side" may refer to the image side; when the optical lens provided in the present application is used for a projection lens or a radar transmitting lens, the "first side" referred to in this article may refer to the imaging side, and the "second side" may refer to the image source side.

[0028] It should also be understood that the terms "comprises", "including", "having", "includes" 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. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire listed features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present application, "may" is used to mean "one or more embodiments of the present application". And, the term "exemplary" is intended to refer to an example or illustration.

[0029] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this article have the same meaning as commonly understood by ordinary technicians in the field to which this application belongs. It should also be understood that terms (such as terms defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in this article.

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] The features, principles and other aspects of the present application are described in detail below.

[0032] In an exemplary embodiment, the optical lens includes, for example, seven lenses having 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, which are arranged in sequence from the first side to the second side along the optical axis.

[0033] In an exemplary embodiment, the optical lens provided by the present application can be used as, for example, a vehicle-mounted lens, in which case the first side of the optical lens can be the object side, and the second side can be the image side. Light from the object side can be imaged on the image side. The second side of the optical lens is the imaging surface of the optical lens.

[0034] In an exemplary embodiment, the optical lens provided by the present application can be used as, for example, a projection lens or a laser radar transmitting end lens. In this case, the second side of the optical lens can be an image source side, and the first side can be an imaging side. Light from the image source side can be imaged on the imaging side. The second side surface of the optical lens is the image source surface of the optical lens.

[0035] In an exemplary embodiment, the optical lens may further include a photosensitive element disposed on the second side surface. Optionally, the photosensitive element disposed on the second side surface may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS).

[0036] In an exemplary embodiment, the first lens may have a negative focal length, and its first side may be a convex surface, and its second side may be a concave surface. The first lens has a negative focal length and can diverge light, so that under certain conditions of a field of view angle, the light emitted through the second side of the first lens can allow the rear optical system to have a larger light receiving surface. In an exemplary embodiment, the first lens can use a high refractive index material so that the incident angle of the required incident light is smaller, which is conducive to reducing the diameter of the front port and improving the imaging quality. In this embodiment, the first side of the first lens is a convex surface, which can converge light, which is conducive to controlling the diameter of the rear lens, achieving miniaturization, and is conducive to more light entering the optical system to achieve a large field of view. In practical applications, it is conducive to the sliding of water droplets, which can reduce the impact of water droplets on the imaging of the optical lens. Making the second side of the first lens a concave surface can collect as much large field of view light as possible to enter the rear optical system, and fix the direction of the edge large angle light.

[0037] In an exemplary embodiment, the second lens may have positive focal power, and its first side surface may be concave, and its second side surface may be convex. The second lens having positive focal power can converge the light passing through the first lens, which is beneficial to reducing the diameter of the front port. The first side surface of the second lens is concave, which can appropriately diverge the light so that the light is emitted smoothly, which is beneficial to improving aberration. The second side surface of the second lens is convex, which can reduce the incident height of large-angle light, thereby reducing the diameter of the lens back port, and can reduce the total optical length of the optical lens.

[0038] In an exemplary embodiment, the third lens may have positive focal power. The third lens has positive focal power, which can further converge the light passing through the second lens, and lower the height of the peripheral light, so as to facilitate the reduction of the rear lens aperture. In an exemplary embodiment, the first side surface of the third lens may be a convex surface, and the second side surface may be a convex surface. In this embodiment, the first side surface and the second side surface of the third lens are both convex surfaces, which can appropriately converge the front light and make the light transition smooth, so as to facilitate the preliminary aberration correction of the incident light, thereby achieving high resolution, that is, improving the resolution ability of the optical lens. In an exemplary embodiment, the first side surface of the third lens may be a plane, and the second side surface may be a convex surface. Making the first side surface of the third lens a plane can eliminate the sag tolerance of the first side surface of the third lens, thereby increasing the accuracy of the spacing distance (such as air spacing) between the second lens and the third lens along the optical axis, improving the assembly yield of the optical lens and the imaging performance of the optical lens, and at the same time, since the side surface of the lens is a plane design, there is no need to invert the platform, so that the third lens can be made smaller as a whole under the condition that the edge thickness processability is met. In an exemplary embodiment, the first side surface of the third lens may be a concave surface, and the second side surface may be a convex surface. The first side surface of the third lens is a concave surface, which, when matched with the second side surface of the second lens (the second side surface of the second lens is, for example, a convex surface), can appropriately diverge the light, reduce the deflection of the light on the first side surface, and thus reduce the generation of aberrations and improve the imaging quality. The second side surface of the third lens is a convex surface, which can make the edge field light converge and deflect toward the optical axis after passing through the second side surface of the third lens, which is beneficial to reducing the rear port diameter of the optical lens.

[0039] In an exemplary embodiment, the fourth lens may have positive focal power, and its first side surface may be convex, and its second side surface may be convex. The fourth lens has positive focal power, which can further converge the light passing through the third lens, lower the height of the peripheral light, and thus help reduce the aperture of the rear lens, and at the same time make the fourth lens have positive focal power, the second lens have positive focal power, and the third lens have positive focal power, which helps reduce the total optical length of the optical lens. In this embodiment, the first side surface and the second side surface of the fourth lens are both convex, which can make the edge field light deflected toward the optical axis after passing through the fourth lens, which is beneficial to reduce the rear port aperture of the optical lens and facilitate preliminary aberration correction of the incident light.

[0040] In an exemplary embodiment, the fifth lens and the sixth lens are matched with positive and negative optical powers, that is, the fifth lens with positive optical power is matched with the sixth lens with negative optical power, or the fifth lens with negative optical power is matched with the sixth lens with positive optical power, which is beneficial to correct the aberration of the center and edge light of each field of view, thereby achieving high resolution of the optical lens.

[0041] In an exemplary embodiment, the fifth lens can be glued with the sixth lens to form a glued component, and have opposite optical powers (for example, the fifth lens has negative optical power, and the sixth lens has positive optical power), so that the light can be smoothly transferred to the rear optical system. The fifth lens and the sixth lens are glued together to form a glued component, and the following technical effects can also be achieved: the various aberrations of the optical system are fully corrected, and the optical performance such as improved resolution, optimized distortion, and CRA can be achieved under the premise of a compact optical lens structure; the light on the first side of the sixth lens and the second side of the fifth lens has almost the same trend, without obvious deflection, so that the light emitted by the fifth lens can be well received by the sixth lens, thereby reducing the light loss caused by reflection between lenses and improving the relative illumination of each field of view; the field curvature can be further reduced to correct the off-axis point aberration of the system.

[0042] In an exemplary embodiment, an aperture for limiting the light beam may be provided between the third lens and the fourth lens to further improve the imaging quality of the optical lens. In this embodiment, the aperture is positioned at the rear of the optical lens, which is beneficial to improving the illumination of the optical lens, and the aperture is close to the cemented member formed by the cementation of the fifth lens and the sixth lens, which is beneficial to improving the resolution of the optical lens. However, it should be noted that the position of the aperture disclosed herein is only an example and not a limitation; in alternative embodiments, the aperture may also be provided at other positions according to actual needs.

[0043] In an exemplary embodiment, the fifth lens may have a negative optical power, and its first side may be a convex surface and its second side may be a concave surface. The fifth lens has a negative optical power and can appropriately diverge light and smooth the light trend. The first side of the fifth lens is a convex surface, which can collect light passing through the fourth lens, which is conducive to properly converging the light, making the light trend transition smoothly, making the incident angle of the peripheral field of view small, reducing the introduction of high-order aberrations, and weakening the lens decentration sensitivity of the seventh lens behind. The second side of the fifth lens is a concave surface, which can increase the incident angle of the peripheral light to the first side of the sixth lens behind, which is conducive to improving the relative illumination of the peripheral field of view.

[0044] In an exemplary embodiment, the sixth lens may have positive optical power, and its first side surface may be convex, and its second side surface may be convex. The sixth lens has positive optical power, which is conducive to light convergence. In an exemplary embodiment, the fifth lens has negative optical power, and the fifth lens with negative optical power cooperates with the sixth lens with positive optical power to further reduce aberrations, and at the same time, the light can be effectively and smoothly converged at the rear end, so that the light reaches the imaging surface smoothly. In an exemplary embodiment, one of the side surfaces of the seventh lens may be a convex surface, and the convex surface cooperates with the seventh lens whose first and second sides are both convex surfaces, which can further reduce the field curvature, so that the light reaches the imaging surface smoothly, and the center and edge of the lens vary greatly, so that the divergent light can be reasonably converged to the rear optical system, so that the peripheral field of view exit angle is small, the introduction of high-order aberrations is reduced, and the eccentricity sensitivity of the rear seventh lens is weakened.

[0045] In an exemplary embodiment, the seventh lens may have positive focal length, and its first side surface may be convex, and its second side surface may be concave. "The seventh lens has positive focal length, which is conducive to the rapid convergence of light to the imaging surface, and slows down the upward trend of light, avoiding the loss of light energy caused by the excessive angle between the main light of the chip and the large field of view when the light reaches the imaging surface, thereby facilitating the improvement of the illumination of the edge field of view and the realization of a shorter total optical length of the optical lens. The first side surface of the seventh lens is convex, which is conducive to collecting the light entering through the sixth lens. The second side surface of the seventh lens is concave, which can make the optical fiber passing through the second side surface of the seventh lens diverge appropriately and smoothly transition to the image plane, thereby making the angle of the light to the imaging plane meet the CRA requirements and improving the resolution and illumination of the optical lens.

[0046] In an exemplary embodiment, the seventh lens may have a negative optical power, and its first side surface may be a concave surface, and its second side surface may be a convex surface. The seventh lens has a positive optical power, which is conducive to the rapid convergence of light to the image plane, and can slow down the upward trend of light, avoiding the loss of light energy caused by the excessive angle between the main light of the chip and the large field of view when the light reaches the imaging surface, thereby facilitating the improvement of the illumination of the edge field of view, and facilitating the realization of a shorter optical total length of the optical lens. The first side surface of the seventh lens is a concave surface, and the second side surface is a convex surface, which can increase the incident angle of the light on the first side surface and the second side surface, and is conducive to adjusting the high-order aberrations introduced by the front optical system to further improve the resolution. In addition, this combination of one side surface being a concave surface and the other side surface being a convex surface also allows the seventh lens to have a smaller optical power, thereby weakening the sensitivity of the optical lens to changes in parameters such as the lens refractive index and thickness.

[0047] In an exemplary embodiment, at least one of the first to seventh lenses may be a spherical lens or an aspherical lens. In an exemplary embodiment, the second lens and the seventh lens may be aspherical lenses. The present application does not specifically limit the specific number of spherical lenses and aspherical lenses. When focusing on imaging quality, the number of aspherical lenses can be increased, or even all lenses use aspherical lenses. The characteristic of an aspherical lens is that the curvature changes continuously from the center of the lens to the periphery. Unlike a spherical lens with a constant curvature from the center of the lens to the periphery, an aspherical lens has a better curvature radius characteristic, and has the advantages of improving distortion aberration and improving astigmatism aberration. After using an aspherical lens, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality of the lens. The setting of an aspherical lens helps to correct system aberrations and improve resolution.

[0048] Figure 1 The optical lens provided by the present application can be used as a vehicle-mounted lens, for example. Figure 1 IMA represents an imaging surface, and light from an object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface arranged on the second side, wherein an image sensor chip is arranged on the imaging surface. It should be understood that the optical lens provided in the present application can also be used as, for example, a projection lens or a laser radar transmitting end lens. In this case, Figure 1 Here, IMA represents an image source plane, and light from the image source plane passes through the surfaces S16 to S1 in sequence and is finally projected onto a projection plane (not shown) disposed on the first side.

[0049] In an exemplary embodiment, the optical lens may satisfy: -15≤R51 / R62≤-0.2, wherein R51 is the radius of curvature of the first side of the fifth lens, and R62 is the radius of curvature of the second side of the sixth lens. By making the optical lens satisfy the above conditional formula, the incident angle of the peripheral light entering the fifth lens and the exit angle leaving the sixth lens are small, which can reduce the introduction of high-order aberrations, thereby weakening the decentering sensitivity of the seventh lens, and can improve the imaging performance of the optical lens to achieve high resolution. Preferably, the optical lens may further satisfy: -11.5≤R51 / R62≤-3, so as to achieve good sensitivity of the optical lens. More preferably, the optical lens may further satisfy: -9.8144≤R51 / R62≤-4.6516, which is conducive to achieving good sensitivity of the optical lens.

[0050] In an exemplary embodiment, the optical lens may satisfy: 15≤F2 / F, where F is the total effective focal length of the optical lens, and F2 is the effective focal length of the second lens. By making the optical lens satisfy the above conditional formula and controlling the focal length of the second lens, the influence of the center thickness of the second lens (i.e., the spacing distance from the first side to the second side of the lens along the optical axis), the refractive index, the shape change, etc. on the performance of the optical lens can be weakened, the sensitivity of the optical lens can be reduced, and the imaging performance of the optical lens can be improved. Preferably, the optical lens may further satisfy: 20≤F2 / F≤520, so as to achieve good sensitivity of the optical lens. More preferably, the optical lens may further satisfy: 21.5431≤F2 / F≤319.2785, which is conducive to achieving good sensitivity of the optical lens. In this embodiment, the effective focal length of the second lens may tend to infinity (for example, it may reach 223.9302), and the larger effective focal length value does not have much difference in the influence on the light, so the effective focal length value may tend to infinity.

[0051] In an exemplary embodiment, the optical lens may satisfy: 15≤F7 / F, where F is the total effective focal length of the optical lens, and F7 is the effective focal length of the seventh lens. By making the optical lens satisfy the above conditional formula and controlling the effective focal length of the seventh lens, the influence of the center thickness, refractive index, shape change, etc. of the sixth lens on the performance of the optical lens can be weakened, the sensitivity of the optical lens can be reduced, and the imaging performance of the optical lens can be improved. Preferably, the optical lens may further satisfy: 20≤F7 / F≤260, so as to achieve good sensitivity of the optical lens. More preferably, the optical lens may further satisfy: 21.5667≤F7 / F≤165.3928, which is conducive to achieving good sensitivity of the optical lens. In this embodiment, the effective focal length of the seventh lens may tend to infinity (for example, it may reach 458.2705), and the larger effective focal length value does not have much difference in the influence on the light, so the effective focal length value may tend to infinity.

[0052] In an exemplary embodiment, the optical lens may satisfy: -0.03≤max(Sag71, Sag72) / TTL<0, wherein Sag71 is the sag height of the first side of the seventh lens, Sag72 is the sag height of the second side of the seventh lens, and TTL is the total optical length of the optical lens. By making the optical lens satisfy the above conditional formula and controlling the sag heights of the two sides of the seventh lens, the ghost images reflected by the second side of the fourth lens and the first side or second side of the seventh lens may be diverged, which is beneficial for the IR (i.e., color filter) to be front-plated to the second side of the fourth lens to ensure the assembly space at the rear end of the optical lens and avoid the IR generating a halo at the rear end with the protective glass that affects the use of the optical lens. Preferably, the optical lens may further satisfy: -0.02≤max(Sag71, Sag72) / TTL≤-0.002 to achieve weak ghost images of the optical lens. More preferably, the optical lens can further satisfy: -0.0133≤max(Sag71, Sag72) / TTL≤-0.0023, which is conducive to achieving weak ghost images of the optical lens.

[0053] In an exemplary embodiment, the optical lens may satisfy: -2≤R42 / R51<0, wherein R42 is the radius of curvature of the second side of the fourth lens, and R51 is the radius of curvature of the first side of the fifth lens. By making the optical lens satisfy the above conditional formula and controlling the second side of the fourth lens and the first side of the fifth lens to be two oppositely disposed convex surfaces, it is beneficial to the divergence of the reflected ghost image and the IR front coating to the second side of the fourth lens. Preferably, the optical lens may further satisfy: -1.05≤R42 / R51≤-0.2, to achieve weak ghost images of the optical lens. More preferably, the optical lens may further satisfy: -0.757≤R42 / R51≤-0.2405, to achieve weak ghost images of the optical lens.

[0054] In an exemplary embodiment, the optical lens may satisfy: 15≤|F56 / F|, where F is the total effective focal length of the optical lens, and F56 is the combined focal length of the fifth lens and the sixth lens. In an exemplary embodiment, the fifth lens and the sixth lens may be glued together to form a glued part. By making the optical lens satisfy the above conditional formula, the combined focal length of the glued part is controlled to be larger, the trend of the light entering the glued part can be controlled, and the aberration caused by the large-angle light can be reduced, thereby reducing the aberration caused by the large-angle light entering; the light deflection angle can also be made small, and the exit angle of the second side light passing through the sixth lens can be controlled within a certain range, so as to correct the lens aberration and reduce the sensitivity of the optical lens; and the chromatic aberration of the optical lens can be corrected, which is beneficial to improving the imaging quality of the optical lens; and the structure of the fifth lens and the sixth lens can also be made compact, which is beneficial to miniaturization of the optical lens. Preferably, the optical lens may further satisfy: 20≤|F56 / F|, so as to achieve good sensitivity of the optical lens. More preferably, the optical lens can further satisfy: 31.5882≤|F56 / F|≤598.5934, which is conducive to achieving good sensitivity of the optical lens. In this embodiment, the absolute value of the combined focal length of the fifth lens and the sixth lens can tend to infinity (for example, it can reach 1664.5086), and a larger effective focal length value does not have much difference in the impact on light, so the effective focal length value can tend to infinity.

[0055] In an exemplary embodiment, the optical lens may satisfy: 4.5≤TTL / F≤7.5, wherein TTL is the total optical length of the optical lens, and F is the total effective focal length of the optical lens. By making the optical lens satisfy the above conditional formula and controlling the total optical length and the total effective focal length of the optical lens to be within this range, the miniaturization of the optical lens and the telephoto can be achieved. Preferably, the optical lens may further satisfy: 6≤TTL / F≤7, so as to achieve the miniaturization of the optical lens. More preferably, the optical lens may further satisfy: 6.7653≤TTL / F≤6.8577, which is conducive to the miniaturization of the optical lens.

[0056] In an exemplary embodiment, the optical lens may satisfy: |Sag21-Sag22| / d2≤0.55, wherein Sag21 is the sagittal height of the first side of the second lens, Sag22 is the sagittal height of the second side of the second lens, and d2 is the center thickness of the second lens. By making the optical lens satisfy the above conditional formula, the overall shape and proportion of the lens of the second lens are uniform, the lens can change uniformly when undergoing thermal expansion and contraction, and the thermal performance of the optical lens is good. Preferably, the optical lens may further satisfy: 0.1≤|Sag21-Sag22| / d2≤0.45, so as to achieve good sensitivity of the optical lens. More preferably, the optical lens may further satisfy: 0.1542≤|Sag21-Sag22| / d2≤0.3639, which is conducive to achieving good sensitivity of the optical lens.

[0057] In an exemplary embodiment, the optical lens may satisfy: |Sag71-Sag72| / d7≤0.5, wherein Sag71 is the sag height of the first side of the seventh lens, Sag72 is the sag height of the second side of the seventh lens, and d7 is the center thickness of the seventh lens. By making the optical lens satisfy the above conditional formula, the overall shape and proportion of the seventh lens are uniform, the lens can change uniformly when experiencing thermal expansion and contraction, and the thermal performance of the optical lens is good. Preferably, the optical lens may further satisfy: 0.01≤|Sag71-Sag72| / d7≤0.2, so as to achieve good sensitivity of the optical lens. More preferably, the optical lens may further satisfy: 0.03≤|Sag71-Sag72| / d7≤0.1567, which is conducive to achieving good sensitivity of the optical lens.

[0058] In an exemplary embodiment, the optical lens may satisfy: 0.005≤d34 / TTL≤0.1, wherein d34 is the distance between the centers of the third lens and the fourth lens along the optical axis, and TTL is the total optical length of the optical lens. By making the optical lens satisfy the above conditional formula and controlling the distance between the third lens and the fourth lens along the optical axis to be smaller, it is possible to smoothly receive the transition light while facilitating miniaturization of the optical lens. Preferably, the optical lens may further satisfy: 0.01≤d34 / TTL≤0.05, thereby achieving miniaturization of the optical lens. More preferably, the optical lens may further satisfy: 0.0079≤d34 / TTL≤0.0327, thereby facilitating miniaturization of the optical lens.

[0059] In an exemplary embodiment, the optical lens may satisfy: |ΔPg,F(5)-ΔPg,F(6)|≤0.03, wherein ΔPg,F(5) is the secondary spectral coefficient of the fifth lens, and ΔPg,F(6) is the secondary spectral coefficient of the sixth lens. In an exemplary embodiment, the fifth lens may be bonded with the sixth lens to form a bonded component, and the fifth lens has a negative optical power, and the sixth lens has a positive optical power. By making the optical lens satisfy the above conditional formula and balancing the secondary spectral coefficients of the fifth lens and the sixth lens, the dispersion of light in a large field of view may be reduced, and small chromatic aberration may be achieved. Preferably, the optical lens may further satisfy: |ΔPg,F(5)-ΔPg,F(6)|≤0.01, and small chromatic aberration of the optical lens may be achieved. More preferably, the optical lens may further satisfy: 0.005≤|ΔPg,F(5)-ΔPg,F(6)|≤0.0055, which is conducive to achieving small chromatic aberration of the optical lens.

[0060] In an exemplary embodiment, the optical lens may satisfy: |H / (F*θ)-1|≤0.04, wherein θ is the radian value corresponding to the maximum field angle of the optical lens, H is the image height corresponding to the maximum field angle of the optical lens, and F is the total effective focal length of the optical lens. By making the optical lens satisfy the above conditional formula, the difference between the actual image height corresponding to the maximum field angle of the optical lens and the theoretical image height of the F-theta distortion model can be controlled, which is conducive to achieving small distortion, making the full field angle resolution of the optical lens evenly distributed, and clear imaging of the full field of view. Moreover, achieving small distortion can reduce the difficulty of post-algorithm correction. Preferably, the optical lens may further satisfy: 0.0012≤|H / (F*θ)-1|≤0.02, to achieve small distortion of the optical lens. More preferably, the optical lens may further satisfy: 0.0028≤|H / (F*θ)-1|≤0.014, which is conducive to achieving small distortion of the optical lens.

[0061] In an exemplary embodiment, the optical lens may satisfy: D / H / FOV≤0.015, wherein D is the maximum aperture of the first side of the first lens corresponding to 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 FOV is the maximum field of view of the optical lens. By making the optical lens satisfy the above conditional formula and making the front port diameter of the optical lens small, the miniaturization of the optical lens can be achieved. Preferably, the optical lens may further satisfy: 0.005≤D / H / FOV≤0.012, thereby achieving the miniaturization of the optical lens. More preferably, the optical lens may further satisfy: 0.0087≤D / H / FOV≤0.0094, which is conducive to achieving the miniaturization of the optical lens.

[0062] In an exemplary embodiment, the optical lens may satisfy: -4≤F1 / F<0, wherein F is the total effective focal length of the optical lens, and F1 is the effective focal length of the first lens. By making the optical lens satisfy the above conditional formula, making the effective focal length value of the first lens negative, and reasonably allocating the effective focal length value of the first lens, it is beneficial for light with a large field of view to enter the optical lens. In addition, making the effective focal length of the first lens smaller can make the light with a large field of view quickly diverge to be nearly parallel to the light with a small angle, which is beneficial to improving the resolution. Preferably, the optical lens may further satisfy: -2≤F1 / F≤-0.05, so as to achieve high resolution of the optical lens. More preferably, the optical lens may further satisfy: -1.6241≤F1 / F≤-1.5308, so as to achieve high resolution of the optical lens.

[0063] In an exemplary embodiment, the optical lens may satisfy: 0< R11 / TTL≤1.5, wherein TTL is the total optical length of the optical lens, and R11 is the radius of curvature of the first side of the first lens. By making the optical lens satisfy the above conditional formula, when the total optical length of the optical lens is constant, the radius of curvature of the first side of the first lens is reduced, which is beneficial to the divergence of the small-angle bright spot ghost image generated by the reflection of the first side of the first lens and the chip protection glass, that is, the ghost image can be weakened. Preferably, the optical lens may further satisfy: 0.55≤R11 / TTL≤1, so as to achieve a weak ghost image of the optical lens. More preferably, the optical lens may further satisfy: 0.6173≤R11 / TTL≤0.8131, which is beneficial to achieve a weak ghost image of the optical lens.

[0064] In an exemplary embodiment, the optical lens may satisfy: 1.2≤F3 / F≤5, where F is the total effective focal length of the optical lens, and F3 is the effective focal length of the third lens. By making the optical lens satisfy the above conditional formula, the effective focal length of the third lens is controlled so that the light that has diverged after passing through the optical system in front of the third lens is converged after passing through the third lens, so as to reduce the aperture behind the third lens and achieve miniaturization of the aperture. Preferably, the optical lens may further satisfy: 2.5≤F3 / F≤4.3, so as to achieve miniaturization of the optical lens. More preferably, the optical lens may further satisfy: 2.7265≤F3 / F≤3.796, which is conducive to miniaturization of the optical lens.

[0065] In an exemplary embodiment, the optical lens may satisfy: 1.5≤F4 / F≤4, wherein F is the total effective focal length of the optical lens, and F4 is the effective focal length of the fourth lens. In an exemplary embodiment, the fourth lens may have a positive focal power. By making the optical lens satisfy the above conditional formula and controlling the effective focal length value of the fourth lens to be smaller, the trend of light after passing through the fourth lens can be changed from divergence to convergence, thereby achieving a small rear end aperture of the fourth lens and a small total optical length of the optical lens, thereby achieving miniaturization of the optical lens. Preferably, the optical lens may further satisfy: 2.5≤F4 / F≤3.3, thereby achieving miniaturization of the optical lens. More preferably, the optical lens may further satisfy: 2.6075≤F4 / F≤3.0884, which is conducive to achieving miniaturization of the optical lens.

[0066] In an exemplary embodiment, the optical lens may satisfy: 0.14≤(d5+d6) / TTL≤0.24, wherein TTL is the total optical length of the optical lens, d5 is the center thickness of the fifth lens, and d6 is the center thickness of the sixth lens. In an exemplary embodiment, the fifth lens and the sixth lens may be glued together to form a glued part. By making the optical lens satisfy the above conditional formula, the thickness of the glued part formed by the fifth lens and the sixth lens may be controlled to be reasonable, thereby balancing aberrations and improving resolution on the basis of achieving a small total optical length. Preferably, the optical lens may further satisfy: 0.17≤(d5+d6) / TTL≤0.2, thereby achieving miniaturization of the optical lens. More preferably, the optical lens may further satisfy: 0.1791≤(d5+d6) / TTL≤0.1919, thereby facilitating miniaturization of the optical lens.

[0067] In an exemplary embodiment, as needed, the optical lens of the present application may further include a filter and / or a protective glass disposed between the seventh lens and the imaging surface, the filter may filter light with different wavelengths, and the protective glass may prevent the elements (e.g., chip) on the second side of the optical lens from being damaged.

[0068] In an exemplary embodiment, the first lens to the seventh lens may be a glass lens or a plastic lens. The present application does not specifically limit the specific number of glass lenses and plastic lenses. An optical lens made of glass can suppress the deviation of the back focus of the optical lens with temperature changes to improve the stability of the system. At the same time, the use of glass material can avoid problems such as lens imaging blur caused by high and low temperature changes in the use environment and affecting the normal use of the lens. Specifically, when focusing on temperature performance and resolution quality, the first lens to the seventh lens can all be glass aspherical lenses. In applications where temperature stability requirements are lower, the first lens to the seventh lens in the optical lens can also be made of plastic. Making optical lenses with plastic can effectively reduce production costs. Of course, the first lens to the seventh lens in the optical lens can also be made of a combination of plastic and glass.

[0069] In an exemplary embodiment, the first side surface or the second side surface of the seventh lens may have a reverse curve, with a convex central portion and a concave edge portion, which is beneficial for better correcting the aberration of light emitted from different fields of view while keeping the overall shape of the seventh lens flat.

[0070] According to the above-mentioned embodiment of the present application, the optical lens has at least one beneficial effect such as good sensitivity, weak ghost image, small aperture, miniaturization, high resolution, small chromatic aberration, and small distortion through the reasonable setting of parameters such as lens shape and optical focal length.

[0071] Fig.11 The following is a diagram showing the effect of weak ghost image energy levels of the optical lens provided by the embodiment of the present application, wherein X and Y represent the image plane coordinates with the chip center as the origin, and different colors represent energy levels of different strengths. Fig.11 As shown, the optical lens provided by the embodiments of the present application can achieve a good technical effect of reducing ghost images.

[0072] However, it should be understood by those skilled in the art that, without departing from the technical solution claimed in the present application, the number of lenses constituting the lens can be changed to obtain the various results and advantages described in this specification. For example, although seven lenses are described as an example in the embodiment, the optical lens is not limited to including seven lenses. If necessary, the optical lens may also include other numbers of lenses. The following further describes specific embodiments of the optical lens applicable to the above-mentioned embodiments with reference to the accompanying drawings.

[0073] Example 1

[0074] The following reference Figure 1 An optical lens according to Embodiment 1 of the present application is described. Figure 1 A schematic structural diagram of an optical lens according to Example 1 of the present application is shown.

[0075] like Figure 1 As shown, the optical lens includes 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 in sequence from the first side to the second side along the optical axis.

[0076] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0077] The second lens L2 has positive refractive power, a first side surface S3 thereof is a concave surface, and a second side surface S4 thereof is a convex surface.

[0078] The third lens L3 has positive refractive power, a first side surface S5 of which is a concave surface, and a second side surface S6 of which is a convex surface.

[0079] The fourth lens L4 has positive refractive power, and its first side surface S8 is a convex surface, and its second side surface S9 is a convex surface.

[0080] The fifth lens L5 has negative refractive power, and its first side surface S10 is convex, and its second side surface S11 is concave.

[0081] The sixth lens L6 has positive refractive power, and its first side surface S11 is a convex surface, and its second side surface S12 is a convex surface.

[0082] The seventh lens L7 has positive refractive power, and its first side surface S13 is convex, and its second side surface S14 is concave.

[0083] The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented member. The first side surface S13 and the second side surface S14 of the seventh lens L7 are inversely curved.

[0084] The optical lens may further include a stop STO (ie, S7 , not shown in the figure), and the stop STO may be disposed between the third lens L3 and the fourth lens L4 .

[0085] Optionally, the optical lens may further include a protective glass having a first side surface S15 and a second side surface S16.

[0086] The optical lens provided in the present application can be used as, for example, a vehicle-mounted lens. In this case, Figure 1 IMA represents the imaging surface, and the light from the object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface IMA disposed on the second side, wherein an image sensor chip is disposed on the imaging surface. It should be understood that the optical lens provided in the present application can also be used as, for example, a projection lens or a laser radar transmitting end lens. In this case, Figure 1 Here, IMA represents an image source plane, and light from the image source plane passes through the surfaces S16 to S1 in sequence and is finally projected onto a projection plane (not shown) disposed on the first side.

[0087] Table 1 shows the curvature radius R, thickness / distance, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 1.

[0088] Table 1

[0089]

[0090] 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 may be aspherical surfaces, and the surface shape of each aspherical lens may be defined by, but not limited to, the following aspherical surface formula:

[0091] (1)

[0092] Wherein, x is the distance vector height from the vertex of the aspherical surface when the aspherical surface is at a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c=1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below gives the cone coefficient k and the high-order coefficients A4, A6, A8, A10, A12, A14 and A16 that can be used for each aspherical mirror surface S3, S4, S13, S14 in Example 1.

[0093] Table 2

[0094]

[0095] Fig.12 FIG. 1 shows a schematic diagram of the MTF curve of the central field light of the optical lens of Example 1, as shown in FIG. Fig.12 As shown, in this embodiment, in terms of MTF, the MTF (Modulation Transfer Function) value of the central field of view light of the optical lens at a spatial frequency of 65lp / mm (65 lines / mm) exceeds 0.81, wherein MTF describes the ability of the optical lens to "restore" the object space in the image space, and the horizontal axis of the MTF graph is the spatial frequency. According to the above values, the optical lens provided by this embodiment has a high resolution capability. The MTF curves of the central field of view of other embodiments are similar to the above curves and will not be repeated here.

[0096] Example 2

[0097] The following reference Figure 2 The optical lens according to Embodiment 2 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 2 A schematic structural diagram of an optical lens according to Embodiment 2 of the present application is shown.

[0098] like Figure 2 As shown, the optical lens includes 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 in sequence from the first side to the second side along the optical axis.

[0099] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0100] The second lens L2 has positive refractive power, a first side surface S3 thereof is a concave surface, and a second side surface S4 thereof is a convex surface.

[0101] The third lens L3 has positive refractive power, a first side surface S5 of which is a concave surface, and a second side surface S6 of which is a convex surface.

[0102] The fourth lens L4 has positive refractive power, and its first side surface S8 is a convex surface, and its second side surface S9 is a convex surface.

[0103] The fifth lens L5 has negative refractive power, and its first side surface S10 is convex, and its second side surface S11 is concave.

[0104] The sixth lens L6 has positive refractive power, and its first side surface S11 is a convex surface, and its second side surface S12 is a convex surface.

[0105] The seventh lens L7 has positive refractive power, and its first side surface S13 is convex, and its second side surface S14 is concave.

[0106] The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented member. The first side surface S13 and the second side surface S14 of the seventh lens L7 are inversely curved.

[0107] Table 3 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 2. Table 4 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspheric mirror first side surface S3 and second side surface S4 of the aspheric mirror second lens L2 and the aspheric mirror first side surface S13 and second side surface S14 of the seventh lens L7 that can be used in Example 2, wherein each aspheric surface shape can be defined by formula (1) given in the above Example 1.

[0108] Table 3

[0109]

[0110] Table 4

[0111]

[0112] In this embodiment, in terms of MTF, the MTF value of the central field light of the optical lens at a spatial frequency of 65lp / mm (65 lines / mm) exceeds 0.81. Based on the above values, the optical lens provided by this embodiment has a high resolution capability.

[0113] Example 3

[0114] The following reference Figure 3 An optical lens according to Example 3 of the present application is described. Figure 3 A schematic structural diagram of an optical lens according to an embodiment of the present application is shown.

[0115] like Figure 3 As shown, the optical lens includes 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 in sequence from the first side to the second side along the optical axis.

[0116] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0117] The second lens L2 has positive refractive power, a first side surface S3 thereof is a concave surface, and a second side surface S4 thereof is a convex surface.

[0118] The third lens L3 has positive refractive power, and its first side surface S5 is a convex surface, and its second side surface S6 is a convex surface.

[0119] The fourth lens L4 has positive refractive power, and its first side surface S8 is a convex surface, and its second side surface S9 is a convex surface.

[0120] The fifth lens L5 has negative refractive power, and its first side surface S10 is convex, and its second side surface S11 is concave.

[0121] The sixth lens L6 has positive refractive power, and its first side surface S11 is a convex surface, and its second side surface S12 is a convex surface.

[0122] The seventh lens L7 has positive refractive power, and its first side surface S13 is convex, and its second side surface S14 is concave.

[0123] The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented member. The first side surface S13 and the second side surface S14 of the seventh lens L7 are inversely curved.

[0124] Table 5 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 3. Table 6 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspheric mirror first side surface S3 and second side surface S4 of the aspheric mirror second lens L2 and the aspheric mirror first side surface S13 and second side surface S14 of the seventh lens L7 that can be used in Example 3, wherein each aspheric surface shape can be defined by formula (1) given in the above Example 1.

[0125] Table 5

[0126]

[0127] Table 6

[0128]

[0129] Example 4

[0130] The following reference Figure 4 An optical lens according to Example 4 of the present application is described. Figure 4 A schematic structural diagram of an optical lens according to Example 4 of the present application is shown.

[0131] like Figure 4As shown, the optical lens includes 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 in sequence from the first side to the second side along the optical axis.

[0132] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0133] The second lens L2 has positive refractive power, a first side surface S3 thereof is a concave surface, and a second side surface S4 thereof is a convex surface.

[0134] The third lens L3 has positive refractive power, and its first side surface S5 is a convex surface, and its second side surface S6 is a convex surface.

[0135] The fourth lens L4 has positive refractive power, and its first side surface S8 is a convex surface, and its second side surface S9 is a convex surface.

[0136] The fifth lens L5 has negative refractive power, and its first side surface S10 is convex, and its second side surface S11 is concave.

[0137] The sixth lens L6 has positive refractive power, and its first side surface S11 is a convex surface, and its second side surface S12 is a convex surface.

[0138] The seventh lens L7 has positive refractive power, and its first side surface S13 is convex, and its second side surface S14 is concave.

[0139] The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented member. The first side surface S13 and the second side surface S14 of the seventh lens L7 are inversely curved.

[0140] Table 7 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 4. Table 8 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspheric mirror first side surface S3 and second side surface S4 of the aspheric mirror second lens L2 and the aspheric mirror first side surface S13 and second side surface S14 of the seventh lens L7 that can be used in Example 4, wherein each aspheric surface shape can be defined by formula (1) given in the above Example 1.

[0141] Table 7

[0142]

[0143] Table 8

[0144]

[0145] In Examples 3 and 4, in terms of MTF, the MTF value of the central field light of the optical lens at a spatial frequency of 65lp / mm (65 lines / mm) exceeds 0.81. Based on the above values, the optical lens provided in this embodiment has a high resolution capability.

[0146] Example 5

[0147] The following reference Figure 5 An optical lens according to Example 5 of the present application is described. Figure 5 A schematic structural diagram of an optical lens according to Example 5 of the present application is shown.

[0148] like Figure 5 As shown, the optical lens includes 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 in sequence from the first side to the second side along the optical axis.

[0149] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0150] The second lens L2 has positive refractive power, a first side surface S3 thereof is a concave surface, and a second side surface S4 thereof is a convex surface.

[0151] The third lens L3 has positive refractive power, a first side surface S5 of which is a concave surface, and a second side surface S6 of which is a convex surface.

[0152] The fourth lens L4 has positive refractive power, and its first side surface S8 is a convex surface, and its second side surface S9 is a convex surface.

[0153] The fifth lens L5 has negative refractive power, and its first side surface S10 is convex, and its second side surface S11 is concave.

[0154] The sixth lens L6 has positive refractive power, and its first side surface S11 is a convex surface, and its second side surface S12 is a convex surface.

[0155] The seventh lens L7 has positive refractive power, and its first side surface S13 is concave, and its second side surface S14 is convex.

[0156] The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented member. The second side surface S14 of the seventh lens L7 has inverse curvature.

[0157] Table 9 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 5. Table 10 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspheric mirror first side surface S3 and second side surface S4 of the aspheric mirror second lens L2 and the aspheric mirror first side surface S13 and second side surface S14 of the seventh lens L7 that can be used in Example 5, wherein each aspheric surface shape can be defined by formula (1) given in the above Example 1.

[0158] Table 9

[0159]

[0160] Table 10

[0161]

[0162] Example 6

[0163] The following reference Figure 6 An optical lens according to Example 6 of the present application is described. Figure 6 A schematic structural diagram of an optical lens according to Example 6 of the present application is shown.

[0164] like Figure 6 As shown, the optical lens includes 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 in sequence from the first side to the second side along the optical axis.

[0165] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0166] The second lens L2 has positive refractive power, a first side surface S3 thereof is a concave surface, and a second side surface S4 thereof is a convex surface.

[0167] The third lens L3 has positive refractive power, a first side surface S5 of which is a concave surface, and a second side surface S6 of which is a convex surface.

[0168] The fourth lens L4 has positive refractive power, and its first side surface S8 is a convex surface, and its second side surface S9 is a convex surface.

[0169] The fifth lens L5 has negative refractive power, and its first side surface S10 is convex, and its second side surface S11 is concave.

[0170] The sixth lens L6 has positive refractive power, and its first side surface S11 is a convex surface, and its second side surface S12 is a convex surface.

[0171] The seventh lens L7 has positive refractive power, and its first side surface S13 is concave, and its second side surface S14 is convex.

[0172] The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented member. The second side surface S14 of the seventh lens L7 has inverse curvature.

[0173] Table 11 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 6. Table 12 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspheric mirror first side surface S3 and second side surface S4 of the aspheric mirror second lens L2 and the aspheric mirror first side surface S13 and second side surface S14 of the seventh lens L7 that can be used in Example 6, wherein each aspheric surface shape can be defined by formula (1) given in the above Example 1.

[0174] Table 11

[0175]

[0176] Table 12

[0177]

[0178] In Examples 5 and 6, in terms of MTF, the MTF value of the central field light of the optical lens at a spatial frequency of 65lp / mm (65 lines / mm) exceeds 0.78. Based on the above values, the optical lens provided in this embodiment has a high resolution capability.

[0179] Example 7

[0180] The following reference Figure 7 An optical lens according to Example 7 of the present application is described. Figure 7 A schematic structural diagram of an optical lens according to Example 7 of the present application is shown.

[0181] like Figure 7 As shown, the optical lens includes 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 in sequence from the first side to the second side along the optical axis.

[0182] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0183] The second lens L2 has positive refractive power, a first side surface S3 thereof is a concave surface, and a second side surface S4 thereof is a convex surface.

[0184] The third lens L3 has positive refractive power, and its first side surface S5 is a convex surface, and its second side surface S6 is a convex surface.

[0185] The fourth lens L4 has positive refractive power, and its first side surface S8 is a convex surface, and its second side surface S9 is a convex surface.

[0186] The fifth lens L5 has negative refractive power, and its first side surface S10 is convex, and its second side surface S11 is concave.

[0187] The sixth lens L6 has positive refractive power, and its first side surface S11 is a convex surface, and its second side surface S12 is a convex surface.

[0188] The seventh lens L7 has positive refractive power, and its first side surface S13 is concave, and its second side surface S14 is convex.

[0189] The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented member. The second side surface S14 of the seventh lens L7 has inverse curvature.

[0190] Table 13 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 7. Table 14 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspheric mirror first side surface S3 and second side surface S4 of the aspheric mirror second lens L2 and the aspheric mirror first side surface S13 and second side surface S14 of the seventh lens L7 that can be used in Example 7, wherein each aspheric surface shape can be defined by formula (1) given in the above Example 1.

[0191] Table 13

[0192]

[0193] Table 14

[0194]

[0195] Example 8

[0196] The following reference Figure 8 An optical lens according to Example 8 of the present application is described. Figure 8 A schematic structural diagram of an optical lens according to Example 8 of the present application is shown.

[0197] like Figure 8 As shown, the optical lens includes 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 in sequence from the first side to the second side along the optical axis.

[0198] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0199] The second lens L2 has positive refractive power, a first side surface S3 thereof is a concave surface, and a second side surface S4 thereof is a convex surface.

[0200] The third lens L3 has positive refractive power, and its first side surface S5 is a convex surface, and its second side surface S6 is a convex surface.

[0201] The fourth lens L4 has positive refractive power, and its first side surface S8 is a convex surface, and its second side surface S9 is a convex surface.

[0202] The fifth lens L5 has negative refractive power, and its first side surface S10 is convex, and its second side surface S11 is concave.

[0203] The sixth lens L6 has positive refractive power, and its first side surface S11 is a convex surface, and its second side surface S12 is a convex surface.

[0204] The seventh lens L7 has positive refractive power, and its first side surface S13 is concave, and its second side surface S14 is convex.

[0205] The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented member. The second side surface S14 of the seventh lens L7 has inverse curvature.

[0206] Table 15 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 8. Table 16 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspheric mirror first side surface S3 and second side surface S4 of the aspheric mirror second lens L2 and the aspheric mirror first side surface S13 and second side surface S14 of the seventh lens L7 that can be used in Example 8, wherein each aspheric surface shape can be defined by formula (1) given in the above Example 1.

[0207] Table 15

[0208]

[0209] Table 16

[0210]

[0211] In Examples 7 and 8, in terms of MTF, the MTF value of the central field light of the optical lens at a spatial frequency of 65lp / mm (65 lines / mm) exceeds 0.8. Based on the above values, the optical lens provided by this embodiment has a high resolution capability.

[0212] Example 9

[0213] The following reference Fig. 9 An optical lens according to Example 9 of the present application is described. Fig. 9 A schematic structural diagram of an optical lens according to Example 9 of the present application is shown.

[0214] like Fig. 9As shown, the optical lens includes 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 in sequence from the first side to the second side along the optical axis.

[0215] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0216] The second lens L2 has positive refractive power, a first side surface S3 thereof is a concave surface, and a second side surface S4 thereof is a convex surface.

[0217] The third lens L3 has positive refractive power, a first side surface S5 thereof is a plane, and a second side surface S6 thereof is a convex surface.

[0218] The fourth lens L4 has positive refractive power, and its first side surface S8 is a convex surface, and its second side surface S9 is a convex surface.

[0219] The fifth lens L5 has negative refractive power, and its first side surface S10 is convex, and its second side surface S11 is concave.

[0220] The sixth lens L6 has positive refractive power, and its first side surface S11 is a convex surface, and its second side surface S12 is a convex surface.

[0221] The seventh lens L7 has positive refractive power, and its first side surface S13 is convex, and its second side surface S14 is concave.

[0222] The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented member. The first side surface S13 and the second side surface S14 of the seventh lens L7 are inversely curved.

[0223] Table 17 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 9. Table 18 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspheric mirror first side surface S3 and second side surface S4 of the aspheric mirror second lens L2 and the aspheric mirror first side surface S13 and second side surface S14 of the seventh lens L7 that can be used in Example 9, wherein each aspheric surface shape can be defined by formula (1) given in the above Example 1.

[0224] Table 17

[0225]

[0226] Table 18

[0227]

[0228] In Example 9, in terms of MTF, the MTF value of the central field light of the optical lens at a spatial frequency of 65lp / mm (65 lines / mm) exceeds 0.80. Based on the above values, the optical lens provided in this example has a high resolution capability.

[0229] Example 10

[0230] The following reference Fig.10 An optical lens according to Example 10 of the present application is described. Fig.10 A schematic structural diagram of an optical lens according to Example 10 of the present application is shown.

[0231] like Fig.10 As shown, the optical lens includes 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 in sequence from the first side to the second side along the optical axis.

[0232] The first lens L1 has negative refractive power, and its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0233] The second lens L2 has positive refractive power, a first side surface S3 thereof is a concave surface, and a second side surface S4 thereof is a convex surface.

[0234] The third lens L3 has positive refractive power, a first side surface S5 thereof is a plane, and a second side surface S6 thereof is a convex surface.

[0235] The fourth lens L4 has positive refractive power, and its first side surface S8 is a convex surface, and its second side surface S9 is a convex surface.

[0236] The fifth lens L5 has negative refractive power, and its first side surface S10 is convex, and its second side surface S11 is concave.

[0237] The sixth lens L6 has positive refractive power, and its first side surface S11 is a convex surface, and its second side surface S12 is a convex surface.

[0238] The seventh lens L7 has positive refractive power, and its first side surface S13 is concave, and its second side surface S14 is convex.

[0239] The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented member. The second side surface S14 of the seventh lens L7 has inverse curvature.

[0240] Table 19 shows the curvature radius R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 10. Table 20 shows the conic coefficient k and high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspheric mirror first side surface S3 and second side surface S4 of the aspheric mirror second lens L2 and the aspheric mirror first side surface S13 and second side surface S14 of the seventh lens L7 that can be used in Example 10, wherein each aspheric surface shape can be defined by formula (1) given in the above Example 1.

[0241] Table 19

[0242]

[0243] Table 20

[0244]

[0245] In Example 10, in terms of MTF, the MTF value of the central field light of the optical lens at a spatial frequency of 65lp / mm (65 lines / mm) exceeds 0.81. Based on the above values, the optical lens provided in this example has a high resolution capability.

[0246] In summary, Examples 1 to 10 satisfy the relationship shown in Table 21. In Table 21, the units of F, TTL, H, BFL, F1 to F7, F56, Sag21, Sag22, Sag71, and Sag72 are millimeters (mm), the units of FOV are degrees (°), and the units of θ are radians (rad).

[0247] Table 21

[0248]

[0249] The present application also provides an electronic device, which may include an optical lens according to the above-mentioned embodiment of the present application and an imaging element for converting an optical image formed by the optical lens into an electrical signal. The electronic device may be an independent electronic device such as a detection distance camera, or an imaging module integrated in a device such as a detection distance device. In addition, the electronic device may also be an independent imaging device such as a vehicle-mounted camera, or an imaging module integrated in a driving assistance system such as a vehicle-mounted camera.

[0250] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. An optical lens, characterized in that: The optical lens includes, in sequence from the first side to the second side along the optical axis: A first lens having negative optical power, wherein the first side surface is convex and the second side surface is concave; a second lens having positive power, wherein the first side surface is concave and the second side surface is convex; a third lens element having positive power, wherein the second side surface of the third lens element is convex; a fourth lens having positive power, the second side surface of which is convex and the second side surface of which is convex; a fifth lens element having negative optical power, wherein the first side surface is convex and the second side surface is concave; a sixth lens having positive optical power, wherein the second side surface thereof is convex, and the second side surface thereof is convex; and a seventh lens having positive refractive power; The optical lens meets the following requirements: 15≤F2 / F, 15≤F7 / F, -2≤R42 / R51<0, Among them, F is the total effective focal length of the optical lens, F2 is the effective focal length of the second lens, F7 is the effective focal length of the seventh lens, R42 is the curvature radius of the second side surface of the fourth lens, and R51 is the curvature radius of the first side surface of the fifth lens.

2. The optical lens according to claim 1, characterized in that: The first side surface of the third lens is a convex surface, a flat surface, or a concave surface.

3. The optical lens according to claim 1, characterized in that: The first side surface of the seventh lens is convex, and the second side surface is concave, or the first side surface is concave, and the second side surface is convex.

4. The optical lens according to any one of claims 1 to 3, characterized in that: The optical lens meets the following requirements: -15≤R51 / R62≤-0.2, Wherein, R51 is the curvature radius of the first side surface of the fifth lens, and R62 is the curvature radius of the second side surface of the sixth lens.

5. The optical lens according to any one of claims 1 to 3, characterized in that: The optical lens meets the following requirements: -0.03≤max(Sag71,Sag72) / TTL<0, Among them, Sag71 is the sag height of the first side surface of the seventh lens, Sag72 is the sag height of the second side surface of the seventh lens, and TTL is the total optical length of the optical lens.

6. The optical lens according to any one of claims 1 to 3, characterized in that: The optical lens meets the following requirements: 15≤|F56 / F|, Wherein, F is the total effective focal length of the optical lens, and F56 is the combined focal length of the fifth lens and the sixth lens.

7. The optical lens according to any one of claims 1 to 3, characterized in that: The optical lens meets the following requirements: 4.5≤TTL / F≤7.5, Wherein, TTL is the total optical length of the optical lens, and F is the total effective focal length of the optical lens.

8. The optical lens according to any one of claims 1 to 3, characterized in that: The optical lens meets the following requirements: |H / (F*θ)-1|≤0.04, Among them, θ is the radian value corresponding to the maximum field angle of the optical lens, H is the image height corresponding to the maximum field angle of the optical lens, and F is the total effective focal length of the optical lens.

9. The optical lens according to any one of claims 1 to 3, characterized in that: The optical lens meets the following requirements: D / H / FOV≤0.015, Among them, D is the maximum light clearance aperture of the first side surface of the first lens corresponding to the maximum field of view angle of the optical lens, H is the image height corresponding to the maximum field of view angle of the optical lens, and FOV is the maximum field of view angle of the optical lens.

10. The optical lens according to any one of claims 1 to 3, characterized in that: And satisfy: |Sag21-Sag22| / d2≤0.55, Among them, Sag21 is the sag height of the first side surface of the second lens, Sag22 is the sag height of the second side surface of the second lens, and d2 is the central thickness of the second lens.

11. The optical lens according to any one of claims 1 to 3, characterized in that: The optical lens meets the following requirements: |Sag71-Sag72| / d7≤0.5, Among them, Sag71 is the sag height of the first side surface of the seventh lens, Sag72 is the sag height of the second side surface of the seventh lens, and d7 is the center thickness of the seventh lens.

12. The optical lens according to any one of claims 1 to 3, characterized in that: The optical lens meets at least one of the following conditions: 0.005≤d34 / TTL≤0.1, |ΔPg,F(5)-ΔPg,F(6)|≤0.03, -4≤F1 / F<0,0 <R11 / TTL≤1.5,1.2≤F3 / F≤5,1.5≤F4 / F≤4,0.14≤(d5+d6) / TTL≤0.24, Wherein, F is the total effective focal length of the optical lens, F1 is the effective focal length of the first lens, F3 is the effective focal length of the third lens, F4 is the effective focal length of the fourth lens, d34 is the distance between the centers of the third lens and the fourth lens along the optical axis, TTL is the total optical length of the optical lens, ΔPg,F(5) is the secondary spectral coefficient of the fifth lens, ΔPg,F(6) is the secondary spectral coefficient of the sixth lens, R11 is the curvature radius of the first side surface of the first lens, d5 is the center thickness of the fifth lens, and d6 is the center thickness of the sixth lens.

13. The optical lens according to any one of claims 1 to 3, characterized in that: The optical lens meets at least one of the following conditions: -11.5≤R51 / R62≤-3, 20≤F2 / F≤520, 20≤F7 / F≤260, -0.02≤max(Sag71,Sag72) / TTL≤-0.002, -1.05≤R 42 / R51≤-0.2, 20≤|F56 / F|, 6≤TTL / F≤7, 0.1≤|Sag21-Sag22| / d2≤0.45, 0.01≤|Sag71-Sag72| / d7≤0. 2, 0.01≤d34 / TTL≤0.05, |ΔPg,F(5)-ΔPg,F(6)|≤0.01, 0.0012≤|H / (F*θ)-1|≤0.02, 0.005≤D / H / FOV ≤0.012, -2≤F1 / F≤-0.05, 0.55≤R11 / TTL≤1, 2.5≤F3 / F≤4.3, 2.5≤F4 / F≤3.3, 0.17≤(d5+d6) / TTL≤0.2, Wherein, F is the total effective focal length of the optical lens, F1 is the effective focal length of the first lens, F2 is the effective focal length of the second lens, F3 is the effective focal length of the third lens, F4 is the effective focal length of the fourth lens, F7 is the effective focal length of the seventh lens, F56 is the combined focal length of the fifth lens and the sixth lens, d34 is the distance between the centers of the third lens and the fourth lens along the optical axis, TTL is the total optical length of the optical lens, D is the maximum clear aperture of the first side surface of the first lens corresponding to 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, FOV is the maximum field of view of the optical lens, θ is the radian value corresponding to the maximum field of view of the optical lens, Sag21 is the maximum field of view of the optical lens, The sag height of the first side surface of the second lens, Sag22 is the sag height of the second side surface of the second lens, Sag71 is the sag height of the first side surface of the seventh lens, Sag72 is the sag height of the second side surface of the seventh lens, ΔPg,F(5) is the secondary spectral coefficient of the fifth lens, ΔPg,F(6) is the secondary spectral coefficient of the sixth lens, R11 is the radius of curvature of the first side surface of the first lens, d2 is the center thickness of the second lens, d5 is the center thickness of the fifth lens, d6 is the center thickness of the sixth lens, d7 is the center thickness of the seventh lens, R42 is the radius of curvature of the second side surface of the fourth lens, R51 is the radius of curvature of the first side surface of the fifth lens, and R62 is the radius of curvature of the second side surface of the sixth lens.

14. The optical lens according to any one of claims 1 to 3, characterized in that: The optical lens meets at least one of the following conditions: -9.8144≤R51 / R62≤-4.6516, 21.5431≤F2 / F≤319.2785, 21.5667≤F7 / F≤165.3928, -0.0133≤max(Sag71,Sag72) / TTL≤-0.0023, -0.75 7≤R42 / R51≤-0.2405, 31.5882≤|F56 / F|≤598.5934, 6.7653≤TTL / F≤6.8577, 0.1542≤|Sag21-Sag22| / d2≤0.3639, 0.03≤|Sag71-Sag7 2| / d7≤0.1567, 0.0079≤d34 / TTL≤0.0327, 0.005≤|ΔPg,F(5)-ΔPg,F(6)|≤0.0055, 0.0028≤|H / (F*θ)-1|≤0.014, 0.0087≤D / H / FOV≤0. 0094, -1.6241≤F1 / F≤-1.5308, 0.6173≤R11 / TTL≤0.8131, 2.7265≤F3 / F≤3.796, 2.6075≤F4 / F≤3.0884, 0.1791≤(d5+d6) / TTL≤0.1919, Wherein, F is the total effective focal length of the optical lens, F1 is the effective focal length of the first lens, F2 is the effective focal length of the second lens, F3 is the effective focal length of the third lens, F4 is the effective focal length of the fourth lens, F7 is the effective focal length of the seventh lens, F56 is the combined focal length of the fifth lens and the sixth lens, d34 is the distance between the centers of the third lens and the fourth lens along the optical axis, TTL is the total optical length of the optical lens, D is the maximum clear aperture of the first side surface of the first lens corresponding to 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, FOV is the maximum field of view of the optical lens, θ is the radian value corresponding to the maximum field of view of the optical lens, Sag21 is the maximum field of view of the optical lens, The sag height of the first side surface of the second lens, Sag22 is the sag height of the second side surface of the second lens, Sag71 is the sag height of the first side surface of the seventh lens, Sag72 is the sag height of the second side surface of the seventh lens, ΔPg,F(5) is the secondary spectral coefficient of the fifth lens, ΔPg,F(6) is the secondary spectral coefficient of the sixth lens, R11 is the radius of curvature of the first side surface of the first lens, d2 is the center thickness of the second lens, d5 is the center thickness of the fifth lens, d6 is the center thickness of the sixth lens, d7 is the center thickness of the seventh lens, R42 is the radius of curvature of the second side surface of the fourth lens, R51 is the radius of curvature of the first side surface of the fifth lens, and R62 is the radius of curvature of the second side surface of the sixth lens.

15. An electronic device, characterized in that: The optical lens comprises any one of claims 1 to 14, and comprises an imaging element for converting an optical image formed by the optical lens into an electrical signal, or comprises a light source.

Images