Optical lenses and electronic equipment

Abstract

The present application discloses an optical lens and an electronic device. The optical lens 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 is convex and whose second side is concave; a second lens with optical power, whose first side and second side are at least convex; a third lens with optical power, whose first side is concave and whose second side is convex; a fourth lens with positive optical power, whose second side is convex; a fifth lens with positive optical power, whose first side is convex; and a sixth lens with positive optical power, whose second side is convex; the optical lens satisfies R1 / TTL≥4 and ‑6≤R6 / T34<0, wherein R1 is the radius of curvature of the first side of the first lens, TTL is the distance from the center of the first side of the first lens to the imaging surface on the optical axis, R6 is the radius of curvature of the second side of the third lens, and T34 is the air interval between the third lens and the fourth lens on the optical axis.

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] In recent years, with the rapid development of intelligent driving technology, vehicle-mounted laser radar has also attracted more and more attention. In order to accurately detect the environment around the car and ensure driving safety, vehicle-mounted laser radar is developing in the direction of miniaturization, low cost and high precision. In the previous 3D-FLASH laser radar system, in order to achieve point-to-point transmission and reception matching, the transmitting and receiving systems use VCSEL chips and SPAD chips with the same aspect ratio. When designing, the focal length ratio of the receiving lens and the transmitting lens is equal to the single pixel size ratio of the receiving chip and the transmitting chip. At the same time, in order to ensure that the angular resolution at different angles is close when detecting at a short distance and a large field of view, a smaller F-theta distortion is required. However, the VCSEL chip of this solution is currently large in area and high in cost. If the cost needs to be reduced, the transmitting end needs to use a smaller VCSEL chip and increase the light output angle of the diffuser placed between the VCSEL chip and the optical lens. This solution will cause greater distortion at the transmitting end. In order to achieve transmission and reception matching, the distortion of the receiving end lens must also be increased.

[0003] At present, the laser radar lenses in the existing technology have the following main problems: 1) The existing large field of view module chip size is large and the cost is high; 2) The existing large field of view receiving lens has a large aperture number FNO, a small aperture, low received energy, and low detection accuracy; 3) The existing large field of view receiving lens has a small distortion and cannot match the transmission and reception with the transmitting end Diffuser solution, which will cause signal crosstalk.

[0004] Therefore, the current market needs an optical lens with large distortion, small FNO, high resolution and miniaturization. Summary of the invention

[0005] In a first aspect, the present application provides an optical lens, which includes, in order from the first side to the second side along the optical axis: a first lens with negative optical power, a second lens with optical power, a third lens with optical power, a fourth lens with positive optical power, a fifth lens with positive optical power, and a sixth lens with positive optical power. The first side surface of the first lens is convex, and the second side surface is concave; at least one of the first side surface and the second side surface of the second lens is convex; the first side surface of the third lens is concave, and the second side surface is convex; the second side surface of the fourth lens is convex; the first side surface of the fifth lens is convex; and the second side surface of the sixth lens is convex. The optical lens satisfies: R1 / TTL≥4 and -6≤R6 / T34<0, wherein R1 is the radius of curvature of the first side surface of the first lens, TTL is the distance from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis, R6 is the radius of curvature of the second side surface of the third lens, and T34 is the air interval between the third lens and the fourth lens on the optical axis.

[0006] In one embodiment, the optical lens satisfies: 9≤TTL / F≤11, wherein TTL is the distance from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis, and F is the effective focal length of the optical lens.

[0007] In one embodiment, the optical lens satisfies: 72°≤(FOV×F) / H≤80°, wherein FOV is the maximum field of view angle of the optical lens, F is the effective focal length of the optical lens, and H is the image height corresponding to the maximum field of view angle of the optical lens.

[0008] In one embodiment, the optical lens satisfies: 0.4≤F / H≤0.6, wherein F is the effective focal length of the optical lens, and H is the image height corresponding to the maximum field angle of the optical lens.

[0009] In one embodiment, the optical lens satisfies: -4≤F1 / F≤-1, wherein F1 is the effective focal length of the first lens, and F is the effective focal length of the optical lens.

[0010] In one embodiment, the optical lens satisfies: |F2 / F|≥5, wherein F2 is the effective focal length of the second lens, and F is the effective focal length of the optical lens.

[0011] In one embodiment, the optical lens satisfies: |F3 / F|≥5, wherein F3 is the effective focal length of the third lens, and F is the effective focal length of the optical lens.

[0012] In one embodiment, the optical lens satisfies: 3≤F4 / F≤8, wherein F4 is the effective focal length of the fourth lens, and F is the effective focal length of the optical lens.

[0013] In one embodiment, the optical lens satisfies: 3.5≤F5 / F≤7, wherein F5 is the effective focal length of the fifth lens, and F is the effective focal length of the optical lens.

[0014] In one embodiment, the optical lens satisfies: 4≤F6 / F≤8.5, wherein F6 is the effective focal length of the sixth lens, and F is the effective focal length of the optical lens.

[0015] In one embodiment, the optical lens satisfies: 0.15≤|(H / 2-F×θ / 2) / (F×θ / 2)|≤0.4, wherein H is the image height corresponding to the maximum field angle of the optical lens, F is the effective focal length of the optical lens, and θ is the radian value corresponding to the maximum field angle of the optical lens.

[0016] In one embodiment, the optical lens satisfies: 0.02≤T34 / TTL≤0.16, wherein T34 is the air interval between the third lens and the fourth lens on the optical axis, and TTL is the distance from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis.

[0017] In one embodiment, the optical lens satisfies at least one of the following: F / ENPD≤1.5, 0.025≤TTL / H / FOV×1°≤0.04, 0.08≤BFL / TTL≤0.25, 0.01≤D / H / FOV×1°≤0.02, 0.65 mm -1 ≤D / H / F≤0.85mm -1, 0.45≤(F×θ) / D≤0.65, -1≤R8 / TTL≤-0.3, 0.1≤R9 / TTL≤0.5, -3≤R12 / TTL≤-0.1, 6mm≤D12×BFL / H≤12mm, 1≤D / D12≤1.6, 2≤D / H≤2.8, -4≤R8 / R9≤-1.5, 0.5≤R5 / R6≤1.1, 0≤T45 / TTL≤0.035, 0.9≤CT5 / CT6≤1.4, 0.8≤R5 / (R6+d5)≤1.3; where F is the effective focal length of the optical lens, ENPD is the entrance pupil diameter of the optical lens, TTL is the distance from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis, H is the image height corresponding to the maximum field of view of the optical lens, and FOV is the maximum field of view angle, BFL is the distance from the center of the second side surface of the sixth lens to the imaging surface of the optical lens on the optical axis, D is the maximum clear aperture of the first side surface of the first lens corresponding to the maximum field of view angle of the optical lens, θ is the radian value corresponding to the maximum field of view angle of the optical lens, D12 is the maximum clear aperture of the second side surface of the sixth lens, R5 is the curvature radius of the first side surface of the third lens, R6 is the curvature radius of the second side surface of the third lens, R8 is the curvature radius of the second side surface of the fourth lens, R9 is the curvature radius of the first side surface of the fifth lens, R12 is the curvature radius of the second side surface of the sixth lens, T45 is the air gap between the fourth lens and the fifth lens on the optical axis, CT5 is the center thickness of the fifth lens on the optical axis, CT6 is the center thickness of the sixth lens on the optical axis, and d5 is the center thickness of the third lens on the optical axis.

[0018] In one embodiment, the second lens has positive or negative optical power.

[0019] In one embodiment, the second lens has positive optical power, and at least one of its first side surface and second side surface is convex; or the second lens has negative optical power, and its first side surface is convex and its second side surface is concave.

[0020] In one embodiment, the third lens has positive or negative optical power.

[0021] In one embodiment, the first side surface of the fourth lens is a convex surface or a concave surface.

[0022] In one embodiment, the second side surface of the fifth lens is a convex surface or a concave surface.

[0023] In one embodiment, the first side surface of the sixth lens is a convex surface or a concave surface.

[0024] In one embodiment, the optical lens satisfies at least one of the following: 4.8≤R1 / TTL≤16, -4.42≤R6 / T34<-1.96, 9.64≤TTL / F≤11.29, 75.24°≤(FOV×F) / H≤77.98°, 0.51≤F / H≤0.53, -2.47≤F1 / F≤-2.10, 19.2≤|F2 / F|≤122.1, 15.4≤|F3 / F|≤122.2, 4.30≤ F4 / F≤7.44, 4.93≤F5 / F≤5.95, 4.0≤F6 / F≤7.9, 0.23≤|(H / 2-F×θ / 2) / (F×θ / 2)|≤0.27, 0.04≤T34 / TTL≤0 .15, 1.0≤F / ENPD≤1.2, 0.03≤TTL / H / FOV×1°≤0.04, 0.1≤BFL / TTL≤0.2, 0.01≤D / H / FOV×1°≤0.02, 0.7mm -1 ≤D / H / F≤0.8mm -1, 0.51≤(F×θ) / D≤0.59, -0.81≤R8 / TTL≤-0.52, 0.25≤R9 / TTL≤0.31, -2.46≤R12 / TTL≤-0.46, 7.74mm≤D12×BF L / H≤11.91mm, 1.22≤D / D12≤1.46, 2.32≤D / H≤2.62, -2.85≤R8 / R9≤-1.81, 0.70≤R5 / R6≤0.94, 0.002≤T45 / TTL ≤0.03, 1.08≤CT5 / CT6≤1.28, 0.85≤R5 / (R6+d5)≤1.26; wherein R1 is the radius of curvature of the first side surface of the first lens, T34 is the air interval between the third lens and the fourth lens on the optical axis, 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, F5 is the effective focal length of the fifth lens, F6 is the effective focal length of the sixth lens, and F is the effective focal length of the optical lens , ENPD is the entrance pupil diameter of the optical lens, TTL is the distance from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis, 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, BFL is the distance from the center of the second side surface of the sixth lens to the imaging surface of the optical lens on the optical axis, 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, θ is the radian value corresponding to the maximum field of view of the optical lens, D12 is the maximum clear aperture of the second side surface of the sixth lens, R5 is the curvature radius of the first side surface of the third lens, R6 is the curvature radius of the second side surface of the third lens, R8 is the curvature radius of the second side surface of the fourth lens, R9 is the curvature radius of the first side surface of the fifth lens, R12 is the curvature radius of the second side surface of the sixth lens, T45 is the air interval between the fourth lens and the fifth lens on the optical axis, CT5 is the center thickness of the fifth lens on the optical axis, CT6 is the center thickness of the sixth lens on the optical axis, and d5 is the center thickness of the third lens on the optical axis.

[0025] The second aspect of the present application provides an electronic device, which includes the optical lens provided by the present application and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

[0026] The present application adopts six lenses, and by optimizing the shape, optical power, etc. of each lens, and satisfying R1 / TTL≥4 and -6≤R6 / T34<0, the radius of curvature of the first side of the first lens is controlled to be larger, the incident angle of the large-angle incident light is increased, thereby increasing the deflection angle of the light in the lens, which is conducive to achieving large distortion, and at the same time, the radius of curvature of the second side of the third lens is controlled to be convex and relatively curved, which is conducive to receiving the light from the first side of the third lens which is a concave surface, increasing the deflection of the small-angle light, thereby increasing the optical path difference between the small-angle and large-angle light, and the air gap between the third lens and the fourth lens is large, the light is fully diffused, and the optical path of the edge light is longer than that of the center light, which is conducive to increasing the distortion of the large field of view. The optical lens provided by the present application has at least one beneficial effect of miniaturization, large distortion, small FNO, and high resolution. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings. In the drawings:

[0028] Figure 1A A schematic structural diagram of an optical lens according to Embodiment 1 of the present application is shown;

[0029] Figure 1B shows a distortion curve of the optical lens according to Example 1 of the present application;

[0030] Figure 2A A schematic structural diagram of an optical lens according to Embodiment 2 of the present application is shown;

[0031] Figure 2B shows a distortion curve of the optical lens according to Example 2 of the present application;

[0032] Figure 3A A schematic structural diagram of an optical lens according to Embodiment 3 of the present application is shown;

[0033] Figure 3B shows a distortion curve of the optical lens according to Example 3 of the present application;

[0034] Figure 4A A schematic structural diagram of an optical lens according to Embodiment 4 of the present application is shown;

[0035] Figure 4B shows a distortion curve of the optical lens according to Example 4 of the present application;

[0036] Figure 5A A schematic structural diagram of an optical lens according to Embodiment 5 of the present application is shown;

[0037] Figure 5Bshows a distortion curve of the optical lens according to Example 5 of the present application;

[0038] Fig. 6A A schematic structural diagram of an optical lens according to Embodiment 6 of the present application is shown;

[0039] Figure 6B shows a distortion curve of the optical lens according to Example 6 of the present application;

[0040] Fig. 7A A schematic structural diagram of an optical lens according to Embodiment 7 of the present application is shown;

[0041] Figure 7B shows a distortion curve of the optical lens according to Example 7 of the present application;

[0042] Fig. 8A A schematic structural diagram of an optical lens according to Example 8 of the present application is shown;

[0043] Figure 8B shows a distortion curve of the optical lens according to Example 8 of the present application;

[0044] Fig. 9A A schematic structural diagram of an optical lens according to Example 9 of the present application is shown;

[0045] Fig. 9B shows a distortion curve of the optical lens according to Example 9 of the present application;

[0046] Fig. 10A A schematic structural diagram of an optical lens according to Embodiment 10 of the present application is shown;

[0047] Fig. 10B shows a distortion curve of the optical lens according to Example 10 of the present application;

[0048] Fig.11A A schematic structural diagram of an optical lens according to Example 11 of the present application is shown;

[0049] Fig. 11B shows a distortion curve of the optical lens according to Example 11 of the present application;

[0050] Fig. 12A A schematic structural diagram of an optical lens according to Embodiment 12 of the present application is shown;

[0051] Fig. 12B shows a distortion curve of the optical lens according to Example 12 of the present application;

[0052] Fig.13A A schematic structural diagram of an optical lens according to Embodiment 13 of the present application is shown; and

[0053] Fig. 13B The distortion curve of the optical lens according to Example 13 of the present application is shown. DETAILED DESCRIPTION

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] The features, principles and other aspects of the present application are described in detail below.

[0063] In an exemplary embodiment, the optical lens includes, for example, six lenses having optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, which are arranged in sequence from the first side to the second side along the optical axis.

[0064] 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.

[0065] 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.

[0066] 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).

[0067] In an exemplary embodiment, the first lens has a negative optical power, and its first side surface is a convex surface and the second side surface is a concave surface. The first lens has a negative optical power and its shape is convex to the first side, which is conducive to collecting light of a large field of view, increasing the amount of light passing through, and diffusing the light to the rear. The first side surface of the first lens is a convex surface, and the surface shape is relatively flat, which is conducive to increasing the incident angle of large-angle incident light, thereby increasing the deflection angle of light in the lens, which is conducive to achieving large distortion. The second side surface of the first lens is a concave surface, which can diverge the large-angle light passing through the first side surface of the first lens, which is conducive to the rear optical system to correct the aberration of large-angle light and achieve high resolution.

[0068] In an exemplary embodiment, the second lens has positive power, and its first side surface is convex, and its second side surface is convex. The second lens has positive power, which is conducive to converging the front light and adjusting the light trend, so that the light transitions smoothly. The second lens is designed to be a biconvex shape, which is conducive to better converging the light emitted by the first lens, collecting large-angle light, reducing light energy loss, and improving the illumination of the edge field of view. At the same time, the light transitions smoothly through the second lens, reducing sensitivity and improving image quality.

[0069] In an exemplary embodiment, the second lens has positive focal power, and its first side surface is concave and its second side surface is convex. The second lens has positive focal power, which is conducive to converging the front light and adjusting the light trend, so that the light transitions smoothly. The first side surface of the second lens is concave, which is conducive to receiving the front light and ensuring that the light enters the second lens smoothly; the second side surface of the second lens is convex, which can appropriately converge the light, so that the light transitions smoothly to the third lens, reduce the loss of light energy, and can also appropriately reduce the height of the light emitted from the second lens, so as to realize the miniaturization of the rear end of the lens.

[0070] In an exemplary embodiment, the second lens has positive focal power, and its first side surface is convex and its second side surface is concave. The second lens has positive focal power, which is conducive to converging the front light and adjusting the light trend, so that the light transitions smoothly. The first side surface of the second lens is convex, which cooperates with the concave surface of the second side surface of the first lens, so that the light emitted by the first lens can be converged, the light trend is smoothed, the system sensitivity is reduced, and the light can enter the rear system smoothly. At the same time, it is conducive to controlling the aperture of the rear lens and realizing a miniaturized design. The second side surface of the second lens is concave, which is curved in the same direction as the first side surface, which can reduce the degree of deflection of the light on the second side surface, reduce the generation of aberrations, and improve the imaging quality.

[0071] In an exemplary embodiment, the second lens has negative optical power, and its first side surface is convex and its second side surface is concave. The second lens has negative optical power, which can appropriately diffuse the light emitted from the first lens and increase the optical path of a large-angle field of view to achieve a large distortion effect. The first side surface of the second lens is convex, which cooperates with the concave surface of the second side surface of the first lens to smooth the light trend and help reduce sensitivity. The second side surface of the second lens is concave, which can control the direction of the large-angle light at the edge of the lens, increase the optical path of the large-angle field of view, and make the light emitted from the second side surface of the second lens have a larger light receiving surface when entering the subsequent optical system.

[0072] In an exemplary embodiment, the third lens has negative optical power, and its first side surface is concave and its second side surface is convex. The third lens has negative optical power and is shaped like a meniscus convex to the second side. The first side surface is concave, which is conducive to receiving the light in front, and after passing through the convex second side surface, the deflection of the small-angle light is increased, and the optical path difference between the small-angle and large-angle light is increased to achieve a large distortion effect. In addition, the first side surface of the third lens is concave, which receives the light in front and further diverges it, increases the optical path of the large-angle field of view, and enables the edge light to reach a higher imaging position, which is conducive to improving the illumination of the edge field of view. At the same time, the second side surface of the third lens is convex, and the second side surface is curved in the same direction as the first side surface, and the curvature of the first side surface and the second side surface of the third lens are similar, which is conducive to the smooth transition of the light through the third lens, reduces sensitivity, and improves imaging quality.

[0073] In an exemplary embodiment, the third lens has positive focal power, and its first side surface is concave, and its second side surface is convex. The third lens has positive focal power and is shaped like a meniscus convex to the second side, which makes it easier to converge the light in front and adjust the light trend, thereby reducing the aperture of the rear lens. The first side surface of the third lens is concave, which is conducive to receiving the light in front and further diverging it, increasing the optical path of the large-angle field of view, and the second side surface of the third lens is convex, so that the light emitted by the second lens is further converged, the light transition is smooth, the light energy loss is reduced, and the height of the light emitted by the third lens is appropriately reduced, so as to realize the miniaturization of the rear end of the lens.

[0074] In an exemplary embodiment, the fourth lens has positive power, and its first side surface is concave and its second side surface is convex. The fourth lens has positive power and is shaped like a meniscus convex to the second side, which is beneficial to further increase the optical distance of the large-angle field of view while reducing the diameter of the rear lens. The first side surface of the fourth lens is concave, which is beneficial to receive the light of the third lens and properly diverge the light, so that the rear end light converges slowly, and the light of the edge field of view shows an upward trend, further increasing the optical distance of the large-angle field of view. The second side surface of the fourth lens is convex, which converges the light and reduces the diameter of the rear lens.

[0075] In an exemplary embodiment, the fourth lens has positive power, and its first side surface is convex, and its second side surface is convex. The fourth lens has positive power and is biconvex in shape, which is conducive to converging light, making the light trend transition smoothly, reducing sensitivity, improving image quality, and helping to reduce the aperture of the rear lens. It is also conducive to the fourth lens to better receive the light of the third lens and play a role in converging light, so as to achieve a large aperture, that is, to achieve a larger amount of light entering and increase the brightness of the image surface.

[0076] In an exemplary embodiment, the fifth lens has positive power, and its first side surface is convex, and its second side surface is convex. The fifth lens has positive power and is biconvex in shape, which is conducive to converging light, making the light trend transition smoothly, and reducing sensitivity; at the same time, it makes the light reach the image plane faster, reducing the total length of the lens; it is also conducive to the edge field of view light being deflected toward the optical axis after passing through the fifth lens, reducing the back port diameter of the system, and performing preliminary aberration correction on the incident light, adjusting the aberration of each field of view light, and improving the resolution capability.

[0077] In an exemplary embodiment, the fifth lens has positive focal power, and its first side surface is convex and its second side surface is concave. The fifth lens has positive focal power and is shaped like a meniscus convex to the first side, which can smoothly transmit light to the rear. The first side surface of the fifth lens is convex, which makes the light converge appropriately, which is conducive to receiving the light emitted by the fourth lens, further lowering the height of the light in the lens, and reducing the lens diameter at the rear end. The second side surface of the fifth lens is concave, and the surface shape is relatively gentle, which is conducive to the smooth transition of light, and performs preliminary aberration correction on the light incident on the fifth lens, reducing the pressure of the sixth lens to correct aberration.

[0078] In an exemplary embodiment, the sixth lens has positive power, and its first side surface is convex, and its second side surface is convex. The sixth lens is a positive power aspheric lens, and its shape is biconvex, which is conducive to converging the light in front, deflecting the light in the direction of the optical axis, and smoothly converging the light to the image plane, reducing the angle of the light incident on the image plane, and achieving a small CRA. Furthermore, the aspheric surface is conducive to improving the resolution of light with a large angle field of view. The sixth lens cooperates with the positive power of the fourth lens and the fifth lens to jointly achieve high imaging quality, miniaturization, small rear end diameter, and small CRA.

[0079] In an exemplary embodiment, the sixth lens has positive power, and its first side surface is concave and the second side surface is convex. The sixth lens is an aspherical lens with positive power, and its shape is a meniscus convex to the second side. The first side surface is concave, which is conducive to adjusting the light trend, so that the light passes through the sixth lens more smoothly, and the light emitted by the fifth lens can be properly diverged, so that the light is deflected upward and the image plane is expanded; the second side surface is convex, which is conducive to converging the light to the image plane and reducing the angle of the light incident on the image plane. Furthermore, the aspherical surface is conducive to improving the resolution ability of light with a large angle field of view. The sixth lens cooperates with the positive power of the fourth lens and the fifth lens to jointly achieve high imaging quality, miniaturization, small rear end diameter, and small CRA.

[0080] In an exemplary embodiment, the first side surface and the second side surface of the sixth lens are both aspherical mirror surfaces. The curvatures of the aspherical surfaces are different at different positions, which is beneficial for correcting system aberrations and field curvatures and improving the resolution of the optical system. More specifically, the first side surface of the sixth lens may have a reverse curve, for example, the center of the first side surface is convex and the edge is reversed, which can effectively correct aberrations, introduce greater distortion to the edge field of view, and improve the central angular resolution.

[0081] In an exemplary embodiment, an aperture for limiting the light beam may be provided between the third lens and the fourth lens. The aperture is conducive to balancing the aperture size of the front and rear lenses, and achieving a small FNO while smoothing the light trend. However, it should be noted that the position of the aperture disclosed here is only an example and not a limitation; in alternative embodiments, the aperture may also be provided at other positions according to actual needs.

[0082] In an exemplary embodiment, the optical lens according to the present application may satisfy: R1 / TTL≥4, wherein R1 is the radius of curvature of the first side of the first lens, and TTL is the distance from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis. More specifically, R1 and TTL may further satisfy: 4.8≤R1 / TTL≤16. Satisfying R1 / TTL≥4, the radius of curvature of the first side of the first lens is controlled to be larger, the incident angle of the incident light at a large angle is increased, thereby increasing the deflection angle of the light in the lens, which is conducive to achieving large distortion. It should be noted that the radius of curvature R1 of the first side of the first lens of multiple embodiments of the present application exceeds 100mm, and the main function is to increase the incident angle of the incident light at a large angle, thereby increasing the deflection angle of the light in the lens, and the first side of the first lens can be close to a plane, R1 can tend to infinity, that is, R1 / TTL can tend to infinity. In other words, a first lens with a larger radius of curvature of the first side of the present application can be obtained through reasonable design.

[0083] In an exemplary embodiment, the optical lens according to the present application may satisfy: -6≤R6 / T34<0, wherein R6 is the radius of curvature of the second side of the third lens, and T34 is the air gap between the third lens and the fourth lens on the optical axis. More specifically, R6 and T34 may further satisfy: -4.42≤R6 / T34<-1.96. By controlling this conditional expression, the radius of curvature of the second side of the third lens is set to be convex and relatively curved, and the light from the first side of the third lens which is concave is received, and the deflection of the light at a small angle is increased, thereby increasing the optical path difference between the light at a small angle and the light at a large angle, and the air gap between the third lens and the fourth lens is large, the light is fully diffused, and the optical path of the edge light is longer than that of the center light, which is conducive to the increase of large field of view distortion.

[0084] In an exemplary embodiment, the optical lens according to the present application may satisfy: 9≤TTL / F≤11, wherein TTL is the distance from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis, and F is the effective focal length of the optical lens. More specifically, TTL and F may further satisfy: 9.64≤TTL / F≤11.29. Satisfying 9≤TTL / F≤11 effectively limits the length of the lens and realizes miniaturization of the lens.

[0085] In an exemplary embodiment, the optical lens according to the present application may satisfy: 72°≤(FOV×F) / H≤80°, where FOV is the maximum field of view of the optical lens, F is the effective focal length of the optical lens, and H is the image height corresponding to the maximum field of view of the optical lens. More specifically, FOV, F, and H may further satisfy: 75.24°≤(FOV×F) / H≤77.98°. Satisfying 72°≤(FOV×F) / H≤80° ensures a large field of view under the condition that the image height and focal length are the same, which is conducive to achieving large distortion.

[0086] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.4≤F / H≤0.6, where F is the effective focal length of the optical lens, and H is the image height corresponding to the maximum field angle of the optical lens. More specifically, F and H may further satisfy: 0.51≤F / H≤0.53. Satisfying 0.4≤F / H≤0.6, controlling the focal length and image height within a certain range, ensuring that the field angle and image height are coordinated, and controlling the image height to be relatively large is conducive to improving resolution.

[0087] In an exemplary embodiment, the optical lens according to the present application may satisfy: -4≤F1 / F≤-1, where F1 is the effective focal length of the first lens, and F is the effective focal length of the optical lens. More specifically, F1 and F may further satisfy: -2.47≤F1 / F≤-2.10. When -4≤F1 / F≤-1 is satisfied, the focal length of the first lens is negative, and the focal length of the first lens is relatively small, which is conducive to receiving light of a large field of view and diffusing it backward, achieving a smooth transition of the light beam, and is conducive to improving image quality.

[0088] In an exemplary embodiment, the optical lens according to the present application may satisfy: |F2 / F|≥5, wherein F2 is the effective focal length of the second lens, and F is the effective focal length of the optical lens. More specifically, F2 and F may further satisfy: 19.2≤|F2 / F|≤122.1. Satisfying |F2 / F|≥5 ensures that the focal length value of the second lens is relatively large, weakens the effect on light convergence or diffusion, and is conducive to adjusting the light trend from the first lens to the third lens to achieve large distortion. It should be noted that in the present application, the absolute value |F2| of the effective focal length of the second lens of multiple embodiments exceeds 100mm, and the ability of the second lens to converge / diverge light is slightly reduced, mainly playing the role of smoothly transitioning light, and when the second lens is a convex and concave meniscus shape, there is a tendency to approach concentric circles, and the |F2| value may tend to infinity, so the second lens with positive or negative focal power and a relatively large focal length value can be obtained by reasonable design.

[0089] In an exemplary embodiment, the optical lens according to the present application may satisfy: |F3 / F|≥5, wherein F3 is the effective focal length of the third lens, and F is the effective focal length of the optical lens. More specifically, F3 and F may further satisfy: 15.4≤|F3 / F|≤122.2. Satisfying |F3 / F|≥5 ensures that the focal length value of the third lens is relatively large, weakens the effect on light convergence or diffusion, and is conducive to adjusting the light trend and achieving large distortion. It should be noted that in the present application, the absolute value |F3| of the effective focal length of the third lens of multiple embodiments exceeds 100mm, the ability of the third lens to converge / diverge light is reduced, and it mainly plays the role of smoothly transitioning light, and the third lens is a concave-convex meniscus shape, which tends to be close to concentric circles, and the |F3| value may tend to infinity, so the third lens with positive or negative focal power and a relatively large focal length value of the present application can be obtained through reasonable design.

[0090] In an exemplary embodiment, the optical lens according to the present application may satisfy: 3≤F4 / F≤8, wherein F4 is the effective focal length of the fourth lens, and F is the effective focal length of the optical lens. More specifically, F4 and F may further satisfy: 4.30≤F4 / F≤7.44. Satisfying 3≤F4 / F≤8 makes the focal length of the fourth lens positive, and the focal length of the fourth lens is controlled within the range of the conditional expression, and the front light is converged by the fourth lens, so that the light trend is smoothly transitioned, which is beneficial to improving the image quality, and at the same time, it is beneficial to reduce the diameter of the rear lens.

[0091] In an exemplary embodiment, the optical lens according to the present application may satisfy: 3.5≤F5 / F≤7, wherein F5 is the effective focal length of the fifth lens, and F is the effective focal length of the optical lens. More specifically, F5 and F may further satisfy: 4.93≤F5 / F≤5.95. Satisfying 3.5≤F5 / F≤7 makes the focal length of the fifth lens positive, and the focal length is relatively small. The fifth lens converges the front light, so that the light reaches the image plane faster, reduces the total length of the lens, lowers the height of the light in the lens, and reduces the lens aperture at the rear end. In addition, controlling the focal length of the fifth lens within the range of this conditional expression can ensure a smooth transition of the light trend, perform preliminary aberration correction on the light incident on the fifth lens, and help improve image quality.

[0092] In an exemplary embodiment, the optical lens according to the present application may satisfy: 4≤F6 / F≤8.5, where F6 is the effective focal length of the sixth lens, and F is the effective focal length of the optical lens. More specifically, F6 and F may further satisfy: 4.0≤F6 / F≤7.9. Satisfying 4≤F6 / F≤8.5 makes the focal length of the sixth lens positive, and controlling the focal length of the sixth lens within the range of this conditional expression can converge the front light, so that the light converges smoothly to the image plane, reducing the angle of light incident on the image plane, which is conducive to a small CRA and improves the imaging quality.

[0093] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.15≤|(H / 2-F×θ / 2) / (F×θ / 2)|≤0.4, wherein H is the image height corresponding to the maximum field angle of the optical lens, F is the effective focal length of the optical lens, and θ is the arc value corresponding to the maximum field angle of the optical lens. More specifically, H, θ, and F may further satisfy: 0.23≤|(H / 2-F×θ / 2) / (F×θ / 2)|≤0.27. Satisfying 0.15≤|(H / 2-F×θ / 2) / (F×θ / 2)|≤0.4 is conducive to making the difference between the ideal image height and the actual image height of the lens larger when the field angle is the same, and increasing the distortion of the lens, that is, while achieving a large field angle, the larger the distortion of the edge field of view is, it is conducive to achieving a higher resolution of the central field of view.

[0094] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.02≤T34 / TTL≤0.16, wherein T34 is the air spacing between the third lens and the fourth lens on the optical axis, and TTL is the distance between the center of the first side surface of the first lens and the imaging surface of the optical lens on the optical axis. More specifically, T34 and TTL may further satisfy: 0.04≤T34 / TTL≤0.15. Satisfying 0.02≤T34 / TTL≤0.16 makes the spacing between the third lens and the fourth lens larger, ensuring that the light passing through the third lens has enough space to adjust the light trend, and increasing the optical path difference between small-angle and large-angle light.

[0095] In an exemplary embodiment, the optical lens according to the present application may satisfy: F / ENPD≤1.5, where F is the effective focal length of the optical lens and ENPD is the entrance pupil diameter of the optical lens. More specifically, F and ENPD may further satisfy: 1.0≤F / ENPD≤1.2. Satisfying F / ENPD≤1.5 is conducive to achieving a small FNO and increasing the amount of light entering.

[0096] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.025≤TTL / H / FOV×1°≤0.04, where F is the effective focal length of the optical lens and ENPD is the entrance pupil diameter of the optical lens. More specifically, TTL, H and FOV may further satisfy: 0.03≤TTL / H / FOV×1°≤0.04. Satisfying 0.025≤TTL / H / FOV×1°≤0.04 can effectively limit the length of the lens at the same ratio of image height to field of view, which is conducive to miniaturization of the lens.

[0097] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.08≤BFL / TTL≤0.25, wherein BFL is the distance from the center of the second side surface of the sixth lens to the imaging surface of the optical lens on the optical axis, and TTL is the distance from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis. More specifically, BFL and TTL may further satisfy: 0.1≤BFL / TTL≤0.2. Satisfying 0.08≤BFL / TTL≤0.25 and reasonably controlling the back focus is conducive to ensuring miniaturization while reserving space for the installation and focusing of optical elements to avoid interference between mechanical components.

[0098] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.01≤D / H / FOV×1°≤0.02, 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. More specifically, D, H, and FOV may further satisfy: 0.01≤D / H / FOV×1°≤0.02. Satisfying 0.01≤D / H / FOV×1°≤0.02 ensures a small front port diameter under certain conditions of field of view and image height, which is conducive to miniaturization.

[0099] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.65 mm -1 ≤D / H / F≤0.85mm -1 , where 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 F is the effective focal length of the optical lens. More specifically, D, H and F may further satisfy: 0.7mm -1 ≤D / H / F≤0.8mm -1 . Meet 0.65mm -1 ≤D / H / F≤0.85mm -1 , under the condition of a certain focal length, the lens can be provided with the characteristics of large image height and small aperture.

[0100] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.45≤(F×θ) / D≤0.65, 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, θ is the arc value corresponding to the maximum field of view of the optical lens, and F is the effective focal length of the optical lens. More specifically, D, θ, and F may further satisfy: 0.51≤(F×θ) / D≤0.59. Satisfying 0.45≤(F×θ) / D≤0.65 can make the aperture of the front end of the lens small and reduce the volume of the imaging system of the lens.

[0101] In an exemplary embodiment, the optical lens according to the present application may satisfy: -1≤R8 / TTL≤-0.3, wherein R8 is the radius of curvature of the second side surface of the fourth lens, and TTL is the distance on the optical axis from the center of the first side surface of the first lens to the imaging surface of the optical lens. More specifically, R8 and TTL may further satisfy: -0.81≤R8 / TTL≤-0.52. When -1≤R8 / TTL≤-0.3 is satisfied, the radius of curvature of the second side surface of the fourth lens is negative, and the surface shape is convex, so that the light rays converge smoothly to the rear optical system, which is beneficial to reducing the total length of the system and is also beneficial to the small aperture at the rear end.

[0102] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.1≤R9 / TTL≤0.5, wherein R9 is the radius of curvature of the first side surface of the fifth lens, and TTL is the distance from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis. More specifically, R9 and TTL may further satisfy: 0.25≤R9 / TTL≤0.31. When 0.1≤R9 / TTL≤0.5 is satisfied, the radius of curvature of the first side surface of the fifth lens is positive, the surface shape is convex, and the received light is deflected toward the optical axis, which is conducive to achieving short TTL and small rear end aperture.

[0103] In an exemplary embodiment, the optical lens according to the present application may satisfy: -3≤R12 / TTL≤-0.1, wherein R12 is the radius of curvature of the second side surface of the sixth lens, and TTL is the distance on the optical axis from the center of the first side surface of the first lens to the imaging surface of the optical lens. More specifically, R12 and TTL may further satisfy: -2.46≤R12 / TTL≤-0.46. When -3≤R12 / TTL≤-0.1 is satisfied, the radius of curvature of the second side surface of the sixth lens is negative, and the surface shape is convex, which can effectively reduce the ghost image energy generated by the reflection between the surface and the image plane.

[0104] In an exemplary embodiment, the optical lens according to the present application may satisfy: 6mm≤D12×BFL / H≤12mm, wherein D12 is the maximum clear aperture of the second side of the sixth lens, BFL is the distance on the optical axis from the center of the second side of the sixth lens to the imaging surface of the optical lens, and H is the image height corresponding to the maximum field angle of the optical lens. More specifically, D12, BFL and H may further satisfy: 7.74mm≤D12×BFL / H≤11.91mm. Satisfying 6mm≤D12×BFL / H≤12mm, under the conditions of the same imaging surface and the same image height, satisfies the conditional range, which is conducive to miniaturization and module installation.

[0105] In an exemplary embodiment, the optical lens according to the present application may satisfy: 1≤D / D12≤1.6, 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, and D12 is the maximum aperture of the second side of the sixth lens. More specifically, D and D12 may further satisfy: 1.22≤D / D12≤1.46. Satisfying 1≤D / D12≤1.6 and designing the effective aperture of the front end of the lens to be close to the effective aperture of the rear end is conducive to reducing the optical axis spacing of the transmitting and receiving lenses, thereby reducing the optical axis spacing of the transmitting and receiving lenses, thereby reducing the volume of the entire module.

[0106] In an exemplary embodiment, the optical lens according to the present application may satisfy: 2≤D / H≤2.8, 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, and H is the image height corresponding to the maximum field of view of the optical lens. More specifically, D and H may further satisfy: 2.32≤D / H≤2.62. When 2≤D / H≤2.8 is satisfied, under the conditions of the same imaging plane and the same image height, the effective aperture of the front end of the lens is smaller, which is conducive to reducing the distance between the optical axes of the transmitting and receiving lenses, thereby reducing the volume of the entire module.

[0107] In an exemplary embodiment, the optical lens according to the present application may satisfy: -4≤R8 / R9≤-1.5, wherein R8 is the radius of curvature of the second side surface of the fourth lens, and R9 is the radius of curvature of the first side surface of the fifth lens. More specifically, R8 and R9 may further satisfy: -2.85≤R8 / R9≤-1.81. When -4≤R8 / R9≤-1.5 is satisfied, the second side surface of the fourth lens is a convex surface, and the first side surface of the fifth lens is a convex surface, which is conducive to a smooth transition of light rays, convergence to the rear, and improved imaging quality.

[0108] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.5≤R5 / R6≤1.1, wherein R5 is the radius of curvature of the first side surface of the third lens, and R6 is the radius of curvature of the second side surface of the third lens. More specifically, R5 and R6 may further satisfy: 0.70≤R5 / R6≤0.94. When 0.5≤R5 / R6≤1.1 is satisfied, the third lens is a meniscus and convex to the first side surface, and the radius of curvature of the two surfaces are similar, which is conducive to increasing the optical path difference between small-angle and large-angle light rays, and achieving large distortion at large angles.

[0109] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0≤T45 / TTL≤0.035, wherein T45 is the air spacing between the fourth lens and the fifth lens on the optical axis, and TTL is the distance between the center of the first side surface of the first lens and the imaging surface of the optical lens on the optical axis. More specifically, T45 and TTL may further satisfy: 0.002≤T45 / TTL≤0.03. When 0≤T45 / TTL≤0.035 is satisfied, the spacing between the fourth lens and the fifth lens is small, which is conducive to reducing the total length of the system and reducing the diameter of the lens rear port.

[0110] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.9≤CT5 / CT6≤1.4, wherein CT5 is the center thickness of the fifth lens on the optical axis, and CT6 is the center thickness of the sixth lens on the optical axis. More specifically, CT5 and CT6 may further satisfy: 1.08≤CT5 / CT6≤1.28. When 0.9≤CT5 / CT6≤1.4 is satisfied, the thickness of the fifth lens and the sixth lens are similar, so that the light rays converge smoothly to the image plane, which helps to reduce the change of light deflection of the overall optical lens at high and low temperatures and has good temperature performance.

[0111] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.8≤R5 / (R6+d5)≤1.3, wherein R5 is the radius of curvature of the first side surface of the third lens, R6 is the radius of curvature of the second side surface of the third lens, and d5 is the center thickness of the third lens on the optical axis. More specifically, R5, R6 and d5 may further satisfy: 0.85≤R5 / (R6+d5)≤1.26. Satisfying 0.8≤R5 / (R6+d5)≤1.3, rationally controlling the radius of curvature and the center thickness of the third lens, making the shape of the third lens concave and convex, and approximately concentrically arranged, is conducive to increasing the optical path difference between small-angle and large-angle light rays, achieving large distortion at large angles, and at the same time, the light rays have a stable trend, which is conducive to improving imaging quality.

[0112] 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 sixth 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.

[0113] In an exemplary embodiment, the first lens to the sixth lens may be a spherical lens or an aspherical lens. 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. Exemplarily, the sixth lens of the present application is an aspherical lens. The characteristics of an aspherical lens are: 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 adopting 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.

[0114] In an exemplary embodiment, the first to sixth lenses may be glass lenses or plastic lenses. 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, the first to sixth lenses can all be made of glass. In applications where temperature stability requirements are lower, the first to sixth lenses in the optical lens can also be made of plastic. Making optical lenses with plastic can effectively reduce production costs. Of course, the first to sixth lenses in the optical lens can also be made of a combination of plastic and glass.

[0115] According to the above-mentioned embodiment of the present application, the F-θ distortion (%) of the edge field of view (eg, 143° to 150°) of the optical lens can reach more than 23%.

[0116] According to the above-mentioned embodiment of the present application, the optical lens can have at least one beneficial effect of miniaturization, large distortion, small FNO, high resolution and high performance by reasonably setting parameters such as lens shape and optical focal length.

[0117] 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 six lenses are described as an example in the embodiment, the optical lens is not limited to including six lenses. If necessary, the optical lens may also include other numbers of lenses. The specific embodiments of the optical lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0118] Example 1

[0119] The following reference Figure 1A An optical lens according to Embodiment 1 of the present application is described. Figure 1A A schematic structural diagram of an optical lens according to Example 1 of the present application is shown.

[0120] like Figure 1A 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 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0121] The first lens L1 is a convex-concave lens with negative focal power, whose first side surface S1 is convex, and whose second side surface S2 is concave. The second lens L2 is a convex-concave lens with positive focal power, whose first side surface S3 is convex, and whose second side surface S4 is concave. The third lens L3 is a convex-concave lens with negative focal power, whose first side surface S5 is concave, and whose second side surface S6 is convex. The fourth lens L4 is a convex-convex lens with positive focal power, whose first side surface S7 is convex, and whose second side surface S8 is convex. The fifth lens L5 is a convex-convex lens with positive focal power, whose first side surface S9 is convex, and whose second side surface S10 is convex. The sixth lens L6 is a convex-convex lens with positive focal power, whose first side surface S11 is convex, and whose second side surface S12 is convex.

[0122] The optical lens may further include a stop STO. The stop STO may be disposed between the third lens L3 and the fourth lens L4. For example, the stop STO may be disposed on the first side surface S7 of the fourth lens L4.

[0123] Optionally, the optical lens may further include a filter L7 having a first side surface S13 and a second side surface S14 and / or a protective glass having a first side surface S15 and a second side surface S16.

[0124] The optical lens provided in the present application can be used as, for example, a vehicle-mounted lens. In this case, Figure 1A 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 1A 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.

[0125] Table 1 shows the radius of curvature R, thickness / distance (it should be understood that the thickness / distance of the row where S1 is located is the center thickness of the first lens L1, the thickness / distance of the row where S2 is located is the spacing distance between the second side surface S2 of the first lens L1 and the first side surface S3 of the second lens L2, the thickness / distance of the row where S3 is located is the center thickness of the second lens L2, and so on), refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 1.

[0126] Table 1

[0127]

[0128] In Embodiment 1, the first side surface S11 and the second side surface S12 of the sixth lens L6 may be aspherical surfaces, and the surface shape of each aspherical lens is x The following aspheric formulas can be used but are not limited to:

[0129] (1)

[0130] in, x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c=1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. Table 2 below gives the cone coefficient k and the high-order coefficients A4, A6, A8, A10 and A12 that can be used for each aspheric mirror surface S11 and S12 in Example 1.

[0131] Table 2

[0132]

[0133] Figure 1B The distortion curve of the optical lens of Example 1 is shown, which indicates the distortion magnitude values ​​corresponding to different field angles. Figure 1B It can be seen that the distortion value of the edge field of view (150°) of the optical lens of Example 1 is 26.19%.

[0134] Example 2

[0135] The following reference Figure 2A 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 2A A schematic structural diagram of an optical lens according to Embodiment 2 of the present application is shown.

[0136] like Figure 2A 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 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0137] The first lens L1 is a convex-concave lens with negative focal power, whose first side surface S1 is convex, and whose second side surface S2 is concave. The second lens L2 is a convex-concave lens with positive focal power, whose first side surface S3 is convex, and whose second side surface S4 is concave. The third lens L3 is a convex-concave lens with negative focal power, whose first side surface S5 is concave, and whose second side surface S6 is convex. The fourth lens L4 is a convex-convex lens with positive focal power, whose first side surface S7 is convex, and whose second side surface S8 is convex. The fifth lens L5 is a convex-convex lens with positive focal power, whose first side surface S9 is convex, and whose second side surface S10 is convex. The sixth lens L6 is a convex-convex lens with positive focal power, whose first side surface S11 is convex, and whose second side surface S12 is convex.

[0138] The optical lens may further include a stop STO. The stop STO may be disposed between the third lens L3 and the fourth lens L4. For example, the stop STO may be disposed on the first side surface S7 of the fourth lens L4.

[0139] Optionally, the optical lens may further include a filter L7 having a first side surface S13 and a second side surface S14 and / or a protective glass having a first side surface S15 and a second side surface S16.

[0140] The optical lens provided in the present application can be used as, for example, a vehicle-mounted lens. In this case, Figure 2A 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 2A 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.

[0141] 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 and high-order coefficient of each aspheric mirror surface that can be used in Example 2, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0142] Table 3

[0143]

[0144] Table 4

[0145]

[0146] Figure 2B The distortion curve of the optical lens of Example 2 is shown, which indicates the distortion value corresponding to different field angles. Figure 2B It can be seen that the distortion value of the edge field of view (150°) of the optical lens of Example 2 is 25.96%.

[0147] Example 3

[0148] The following reference Figure 3A An optical lens according to Example 3 of the present application is described. Figure 3A A schematic structural diagram of an optical lens according to Example 3 of the present application is shown.

[0149] like Figure 3AAs 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 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0150] The first lens L1 is a convex-concave lens with negative focal power, whose first side surface S1 is convex and whose second side surface S2 is concave. The second lens L2 is a convex-convex lens with positive focal power, whose first side surface S3 is convex and whose second side surface S4 is convex. The third lens L3 is a convex-convex lens with negative focal power, whose first side surface S5 is concave and whose second side surface S6 is convex. The fourth lens L4 is a convex-convex lens with positive focal power, whose first side surface S7 is convex and whose second side surface S8 is convex. The fifth lens L5 is a convex-convex lens with positive focal power, whose first side surface S9 is convex and whose second side surface S10 is convex. The sixth lens L6 is a convex-convex lens with positive focal power, whose first side surface S11 is convex and whose second side surface S12 is convex.

[0151] The optical lens may further include a stop STO. The stop STO may be disposed between the third lens L3 and the fourth lens L4. For example, the stop STO may be disposed near the first side surface S7 of the fourth lens L4.

[0152] Optionally, the optical lens may further include a filter L7 having a first side surface S13 and a second side surface S14 and / or a protective glass having a first side surface S15 and a second side surface S16.

[0153] The optical lens provided in the present application can be used as, for example, a vehicle-mounted lens. In this case, Figure 3A 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 3A 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.

[0154] 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 and high-order coefficient of each aspheric mirror surface that can be used in Example 3, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0155] Table 5

[0156]

[0157] Table 6

[0158]

[0159] Figure 3B The distortion curve of the optical lens of Example 3 is shown, which indicates the distortion magnitude values ​​corresponding to different field angles. Figure 3B It can be seen that the distortion value of the edge field of view (148.6°) of the optical lens of Example 3 is 26.53%.

[0160] Example 4

[0161] The following reference Figure 4A An optical lens according to Example 4 of the present application is described. Figure 4A A schematic structural diagram of an optical lens according to Example 4 of the present application is shown.

[0162] like Figure 4A 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 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0163] The first lens L1 is a convex-concave lens with negative focal power, whose first side surface S1 is convex and whose second side surface S2 is concave. The second lens L2 is a convex-convex lens with positive focal power, whose first side surface S3 is convex and whose second side surface S4 is convex. The third lens L3 is a convex-convex lens with negative focal power, whose first side surface S5 is concave and whose second side surface S6 is convex. The fourth lens L4 is a convex-convex lens with positive focal power, whose first side surface S7 is convex and whose second side surface S8 is convex. The fifth lens L5 is a convex-convex lens with positive focal power, whose first side surface S9 is convex and whose second side surface S10 is convex. The sixth lens L6 is a convex-convex lens with positive focal power, whose first side surface S11 is convex and whose second side surface S12 is convex.

[0164] The optical lens may further include a stop STO. The stop STO may be disposed between the third lens L3 and the fourth lens L4. For example, the stop STO may be disposed near the first side surface S7 of the fourth lens L4.

[0165] Optionally, the optical lens may further include a filter L7 having a first side surface S13 and a second side surface S14 and / or a protective glass having a first side surface S15 and a second side surface S16.

[0166] The optical lens provided in the present application can be used as, for example, a vehicle-mounted lens. In this case, Figure 4A 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 4AHere, 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.

[0167] 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 and high-order coefficient of each aspheric mirror surface that can be used in Example 4, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0168] Table 7

[0169]

[0170] Table 8

[0171]

[0172] Figure 4B The distortion curve of the optical lens of Example 4 is shown, which indicates the distortion magnitude values ​​corresponding to different field angles. Figure 4B It can be seen that the distortion value of the edge field of view (147.6°) of the optical lens of Example 4 is 25.97%.

[0173] Example 5

[0174] The following reference Figure 5A An optical lens according to Example 5 of the present application is described. Figure 5A A schematic structural diagram of an optical lens according to Example 5 of the present application is shown.

[0175] like Figure 5A 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 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0176] The first lens L1 is a convex-concave lens with negative focal power, whose first side surface S1 is convex and whose second side surface S2 is concave. The second lens L2 is a convex-concave lens with positive focal power, whose first side surface S3 is concave and whose second side surface S4 is convex. The third lens L3 is a convex-concave lens with negative focal power, whose first side surface S5 is concave and whose second side surface S6 is convex. The fourth lens L4 is a convex-convex lens with positive focal power, whose first side surface S7 is convex and whose second side surface S8 is convex. The fifth lens L5 is a convex-concave lens with positive focal power, whose first side surface S9 is convex and whose second side surface S10 is concave. The sixth lens L6 is a convex-convex lens with positive focal power, whose first side surface S11 is convex and whose second side surface S12 is convex.

[0177] The optical lens may further include a stop STO. The stop STO may be disposed between the third lens L3 and the fourth lens L4. For example, the stop STO may be disposed on the first side surface S7 of the fourth lens L4.

[0178] Optionally, the optical lens may further include a filter L7 having a first side surface S13 and a second side surface S14 and / or a protective glass having a first side surface S15 and a second side surface S16.

[0179] The optical lens provided in the present application can be used as, for example, a vehicle-mounted lens. In this case, Figure 5A 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 5A 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.

[0180] 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 and high-order coefficient of each aspheric mirror surface that can be used in Example 5, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0181] Table 9

[0182]

[0183] Table 10

[0184]

[0185] Figure 5B The distortion curve of the optical lens of Example 5 is shown, which indicates the distortion magnitude values ​​corresponding to different field angles. Figure 5B It can be seen that the distortion value of the edge field of view (147°) of the optical lens of Example 5 is 25.90%.

[0186] Example 6

[0187] The following reference Fig. 6A An optical lens according to Example 6 of the present application is described. Fig. 6A A schematic structural diagram of an optical lens according to Example 6 of the present application is shown.

[0188] like Fig. 6AAs 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 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0189] The first lens L1 is a convex-concave lens with negative focal power, whose first side surface S1 is convex and whose second side surface S2 is concave. The second lens L2 is a convex-concave lens with positive focal power, whose first side surface S3 is concave and whose second side surface S4 is convex. The third lens L3 is a convex-concave lens with negative focal power, whose first side surface S5 is concave and whose second side surface S6 is convex. The fourth lens L4 is a convex-convex lens with positive focal power, whose first side surface S7 is convex and whose second side surface S8 is convex. The fifth lens L5 is a convex-concave lens with positive focal power, whose first side surface S9 is convex and whose second side surface S10 is concave. The sixth lens L6 is a convex-convex lens with positive focal power, whose first side surface S11 is convex and whose second side surface S12 is convex.

[0190] The optical lens may further include a stop STO. The stop STO may be disposed between the third lens L3 and the fourth lens L4. For example, the stop STO may be disposed on the first side surface S7 of the fourth lens L4.

[0191] Optionally, the optical lens may further include a filter L7 having a first side surface S13 and a second side surface S14 and / or a protective glass having a first side surface S15 and a second side surface S16.

[0192] The optical lens provided in the present application can be used as, for example, a vehicle-mounted lens. In this case, Fig. 6A 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, Fig. 6A 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.

[0193] 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 and high-order coefficient of each aspheric mirror surface that can be used in Example 6, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0194] Table 11

[0195]

[0196] Table 12

[0197]

[0198] Figure 6B The distortion curve of the optical lens of Example 6 is shown, which indicates the distortion magnitude values ​​corresponding to different field angles. Figure 6B It can be seen that the distortion value of the edge field of view (146.4°) of the optical lens of Example 6 is 25.59%.

[0199] Example 7

[0200] The following reference Fig. 7A An optical lens according to Example 7 of the present application is described. Fig. 7A A schematic structural diagram of an optical lens according to Example 7 of the present application is shown.

[0201] like Fig. 7A 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 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0202] The first lens L1 is a convex-concave lens with negative focal power, whose first side surface S1 is convex and whose second side surface S2 is concave. The second lens L2 is a convex-concave lens with positive focal power, whose first side surface S3 is convex and whose second side surface S4 is concave. The third lens L3 is a convex-concave lens with negative focal power, whose first side surface S5 is concave and whose second side surface S6 is convex. The fourth lens L4 is a convex-concave lens with positive focal power, whose first side surface S7 is concave and whose second side surface S8 is convex. The fifth lens L5 is a convex-convex lens with positive focal power, whose first side surface S9 is convex and whose second side surface S10 is convex. The sixth lens L6 is a convex-convex lens with positive focal power, whose first side surface S11 is convex and whose second side surface S12 is convex.

[0203] The optical lens may further include a stop STO. The stop STO may be disposed between the third lens L3 and the fourth lens L4. For example, the stop STO may be disposed near the first side surface S7 of the fourth lens L4.

[0204] Optionally, the optical lens may further include a filter L7 having a first side surface S13 and a second side surface S14 and / or a protective glass having a first side surface S15 and a second side surface S16.

[0205] The optical lens provided in the present application can be used as, for example, a vehicle-mounted lens. In this case, Fig. 7A 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, Fig. 7AHere, 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.

[0206] 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 and high-order coefficient of each aspheric mirror surface that can be used in Example 7, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0207] Table 13

[0208]

[0209] Table 14

[0210]

[0211] Figure 7B The distortion curve of the optical lens of Example 7 is shown, which indicates the distortion value corresponding to different field angles. Figure 7B It can be seen that the distortion value of the edge field of view (148°) of the optical lens of Example 7 is 26.02%.

[0212] Example 8

[0213] The following reference Fig. 8A An optical lens according to Example 8 of the present application is described. Fig. 8A A schematic structural diagram of an optical lens according to Example 8 of the present application is shown.

[0214] like Fig. 8A 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 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0215] The first lens L1 is a convex-concave lens with negative focal power, whose first side surface S1 is convex and whose second side surface S2 is concave. The second lens L2 is a convex-concave lens with positive focal power, whose first side surface S3 is convex and whose second side surface S4 is concave. The third lens L3 is a convex-concave lens with negative focal power, whose first side surface S5 is concave and whose second side surface S6 is convex. The fourth lens L4 is a convex-concave lens with positive focal power, whose first side surface S7 is concave and whose second side surface S8 is convex. The fifth lens L5 is a convex-convex lens with positive focal power, whose first side surface S9 is convex and whose second side surface S10 is convex. The sixth lens L6 is a convex-convex lens with positive focal power, whose first side surface S11 is convex and whose second side surface S12 is convex.

[0216] The optical lens may further include a stop STO. The stop STO may be disposed between the third lens L3 and the fourth lens L4. For example, the stop STO may be disposed near the first side surface S7 of the fourth lens L4.

[0217] Optionally, the optical lens may further include a filter L7 having a first side surface S13 and a second side surface S14 and / or a protective glass having a first side surface S15 and a second side surface S16.

[0218] The optical lens provided in the present application can be used as, for example, a vehicle-mounted lens. In this case, Fig. 8A 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, Fig. 8A 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.

[0219] 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 and high-order coefficient of each aspheric mirror surface that can be used in Example 8, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0220] Table 15

[0221]

[0222] Table 16

[0223]

[0224] Figure 8B The distortion curve of the optical lens of Example 8 is shown, which indicates the distortion value corresponding to different field angles. Figure 8B It can be seen that the distortion value of the edge field of view (143.8°) of the optical lens of Example 8 is 23.86%.

[0225] Example 9

[0226] The following reference Fig. 9A An optical lens according to Example 9 of the present application is described. Fig. 9A A schematic structural diagram of an optical lens according to Example 9 of the present application is shown.

[0227] like Fig. 9AAs 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 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0228] The first lens L1 is a convex-concave lens with negative focal power, whose first side surface S1 is convex and whose second side surface S2 is concave. The second lens L2 is a convex-concave lens with positive focal power, whose first side surface S3 is convex and whose second side surface S4 is concave. The third lens L3 is a convex-concave lens with negative focal power, whose first side surface S5 is concave and whose second side surface S6 is convex. The fourth lens L4 is a convex-convex lens with positive focal power, whose first side surface S7 is convex and whose second side surface S8 is convex. The fifth lens L5 is a convex-convex lens with positive focal power, whose first side surface S9 is convex and whose second side surface S10 is convex. The sixth lens L6 is a convex-convex lens with positive focal power, whose first side surface S11 is concave and whose second side surface S12 is convex.

[0229] The optical lens may further include a stop STO. The stop STO may be disposed between the third lens L3 and the fourth lens L4. For example, the stop STO may be disposed on the first side surface S7 of the fourth lens L4.

[0230] Optionally, the optical lens may further include a filter L7 having a first side surface S13 and a second side surface S14 and / or a protective glass having a first side surface S15 and a second side surface S16.

[0231] The optical lens provided in the present application can be used as, for example, a vehicle-mounted lens. In this case, Fig. 9A 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, Fig. 9A 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.

[0232] 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 and high-order coefficient of each aspheric mirror surface that can be used in Example 9, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0233] Table 17

[0234]

[0235] Table 18

[0236]

[0237] Fig. 9B The distortion curve of the optical lens of Example 9 is shown, which indicates the distortion magnitude values ​​corresponding to different field angles. Fig. 9B It can be seen that the distortion value of the edge field of view (148.6°) of the optical lens of Example 9 is 26.47%.

[0238] Example 10

[0239] The following reference Fig. 10A An optical lens according to Example 10 of the present application is described. Fig. 10A A schematic structural diagram of an optical lens according to Example 10 of the present application is shown.

[0240] like Fig. 10A 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 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0241] The first lens L1 is a convex-concave lens with negative focal power, whose first side surface S1 is convex and whose second side surface S2 is concave. The second lens L2 is a convex-concave lens with positive focal power, whose first side surface S3 is convex and whose second side surface S4 is concave. The third lens L3 is a convex-concave lens with negative focal power, whose first side surface S5 is concave and whose second side surface S6 is convex. The fourth lens L4 is a convex-convex lens with positive focal power, whose first side surface S7 is convex and whose second side surface S8 is convex. The fifth lens L5 is a convex-convex lens with positive focal power, whose first side surface S9 is convex and whose second side surface S10 is convex. The sixth lens L6 is a convex-convex lens with positive focal power, whose first side surface S11 is concave and whose second side surface S12 is convex.

[0242] The optical lens may further include a stop STO. The stop STO may be disposed between the third lens L3 and the fourth lens L4. For example, the stop STO may be disposed on the first side surface S7 of the fourth lens L4.

[0243] Optionally, the optical lens may further include a filter L7 having a first side surface S13 and a second side surface S14 and / or a protective glass having a first side surface S15 and a second side surface S16.

[0244] The optical lens provided in the present application can be used as, for example, a vehicle-mounted lens. In this case, Fig. 10A 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, Fig. 10AHere, 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.

[0245] Table 19 shows the radius of curvature 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 and high-order coefficient of each aspheric mirror surface that can be used in Example 10, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0246] Table 19

[0247]

[0248] Table 20

[0249]

[0250] Fig. 10B The distortion curve of the optical lens of Example 10 is shown, which indicates the distortion magnitude values ​​corresponding to different field angles. Fig. 10B It can be seen that the distortion value of the edge field of view (147.8°) of the optical lens of Example 10 is 26.06%.

[0251] Embodiment 11

[0252] The following reference Fig.11A An optical lens according to Example 11 of the present application is described. Fig.11A A schematic structural diagram of an optical lens according to Example 11 of the present application is shown.

[0253] like Fig.11A 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 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0254] The first lens L1 is a convex-concave lens with negative focal power, whose first side surface S1 is convex and whose second side surface S2 is concave. The second lens L2 is a convex-concave lens with negative focal power, whose first side surface S3 is convex and whose second side surface S4 is concave. The third lens L3 is a convex-concave lens with negative focal power, whose first side surface S5 is concave and whose second side surface S6 is convex. The fourth lens L4 is a convex-convex lens with positive focal power, whose first side surface S7 is convex and whose second side surface S8 is convex. The fifth lens L5 is a convex-convex lens with positive focal power, whose first side surface S9 is convex and whose second side surface S10 is convex. The sixth lens L6 is a convex-convex lens with positive focal power, whose first side surface S11 is convex and whose second side surface S12 is convex.

[0255] The optical lens may further include a stop STO. The stop STO may be disposed between the third lens L3 and the fourth lens L4. For example, the stop STO may be disposed on the first side surface S7 of the fourth lens L4.

[0256] Optionally, the optical lens may further include a filter L7 having a first side surface S13 and a second side surface S14 and / or a protective glass having a first side surface S15 and a second side surface S16.

[0257] The optical lens provided in the present application can be used as, for example, a vehicle-mounted lens. In this case, Fig.11A 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, Fig.11A 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.

[0258] Table 21 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 11. Table 22 shows the conic coefficient and high-order coefficient of each aspheric mirror surface that can be used in Example 11, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0259] Table 21

[0260]

[0261] Table 22

[0262]

[0263] Fig. 11B The distortion curve of the optical lens of Example 11 is shown, which indicates the distortion magnitude values ​​corresponding to different field angles. Fig. 11B It can be seen that the distortion value of the edge field of view (150°) of the optical lens of Example 11 is 26.06%.

[0264] Example 12

[0265] The following reference Fig. 12A An optical lens according to Example 12 of the present application is described. Fig. 12A A schematic structural diagram of an optical lens according to Example 12 of the present application is shown.

[0266] like Fig. 12AAs 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 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0267] The first lens L1 is a convex-concave lens with negative focal power, whose first side surface S1 is convex and whose second side surface S2 is concave. The second lens L2 is a convex-concave lens with negative focal power, whose first side surface S3 is convex and whose second side surface S4 is concave. The third lens L3 is a convex-concave lens with positive focal power, whose first side surface S5 is concave and whose second side surface S6 is convex. The fourth lens L4 is a convex-convex lens with positive focal power, whose first side surface S7 is convex and whose second side surface S8 is convex. The fifth lens L5 is a convex-convex lens with positive focal power, whose first side surface S9 is convex and whose second side surface S10 is convex. The sixth lens L6 is a convex-convex lens with positive focal power, whose first side surface S11 is convex and whose second side surface S12 is convex.

[0268] The optical lens may further include a stop STO. The stop STO may be disposed between the third lens L3 and the fourth lens L4. For example, the stop STO may be disposed on the second side surface S6 of the third lens L3.

[0269] Optionally, the optical lens may further include a filter L7 having a first side surface S13 and a second side surface S14 and / or a protective glass having a first side surface S15 and a second side surface S16.

[0270] The optical lens provided in the present application can be used as, for example, a vehicle-mounted lens. In this case, Fig. 12A 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, Fig. 12A 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.

[0271] Table 23 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 12. Table 24 shows the conic coefficient and high-order coefficient of each aspheric mirror surface that can be used in Example 12, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0272] Table 23

[0273]

[0274] Table 24

[0275]

[0276] Fig. 12B The distortion curve of the optical lens of Example 12 is shown, which indicates the distortion magnitude values ​​corresponding to different field angles. Fig. 12B It can be seen that the distortion value of the edge field of view (150°) of the optical lens of Example 12 is 26.15%.

[0277] Embodiment 13

[0278] The following reference Fig.13A An optical lens according to Example 13 of the present application is described. Fig.13A A schematic structural diagram of an optical lens according to Example 13 of the present application is shown.

[0279] like Fig.13A 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 and a sixth lens L6 in sequence from the first side to the second side along the optical axis.

[0280] The first lens L1 is a convex-concave lens with negative focal power, whose first side surface S1 is convex and whose second side surface S2 is concave. The second lens L2 is a convex-concave lens with positive focal power, whose first side surface S3 is convex and whose second side surface S4 is concave. The third lens L3 is a convex-concave lens with positive focal power, whose first side surface S5 is concave and whose second side surface S6 is convex. The fourth lens L4 is a convex-convex lens with positive focal power, whose first side surface S7 is convex and whose second side surface S8 is convex. The fifth lens L5 is a convex-convex lens with positive focal power, whose first side surface S9 is convex and whose second side surface S10 is convex. The sixth lens L6 is a convex-convex lens with positive focal power, whose first side surface S11 is convex and whose second side surface S12 is convex.

[0281] The optical lens may further include a stop STO. The stop STO may be disposed between the third lens L3 and the fourth lens L4. For example, the stop STO may be disposed on the second side surface S6 of the third lens L3.

[0282] Optionally, the optical lens may further include a filter L7 having a first side surface S13 and a second side surface S14 and / or a protective glass having a first side surface S15 and a second side surface S16.

[0283] The optical lens provided in the present application can be used as, for example, a vehicle-mounted lens. In this case, Fig.13A 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, Fig.13AHere, 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.

[0284] Table 25 shows the radius of curvature R, thickness / distance, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 13. Table 26 shows the conic coefficient and high-order coefficient of each aspheric mirror surface that can be used in Example 13, wherein each aspheric surface shape can be defined by the formula (1) given in the above Example 1.

[0285] Table 25

[0286]

[0287] Table 26

[0288]

[0289] Fig. 13B The distortion curve of the optical lens of Example 13 is shown, which indicates the distortion magnitude values ​​corresponding to different field angles. Fig. 13B It can be seen that the distortion value of the edge field of view (150°) of the optical lens of Example 13 is 26.37%.

[0290] In summary, Examples 1 to 13 respectively satisfy the relationships shown in Table 27-1, Table 27-2, Table 28-1, and Table 28-2. In Table 27-1, Table 27-2, Table 28-1, and Table 28-2, the units of F, ENPD, TTL, H, D, BFL, F1~F6, and D12 are millimeters (mm), the unit of FOV is degrees (°), and the unit of θ is radians (rad).

[0291] Table 27-1

[0292]

[0293] Table 27-2

[0294]

[0295] Table 28-1

[0296]

[0297] Table 28-2

[0298]

[0299] 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.

[0300] 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 the technical features with similar functions disclosed in this application (but not limited to) by each other to form a technical solution.

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 optical power, wherein at least one of the first side surface and the second side surface is convex; a third lens having optical power, wherein the first side surface is concave and the second side surface is convex; a fourth lens element having positive refractive power, wherein the second side surface of the fourth lens element is convex; a fifth lens element having positive optical power, wherein the first side surface of the fifth lens element is convex; and a sixth lens element having positive refractive power, wherein the second side surface of the sixth lens element is convex; The number of lenses having optical power in the optical lens is six; The optical lens satisfies: |F3 / F|≥5, R1 / TTL≥4 and -6≤R6 / T34<0, wherein F3 is the effective focal length of the third lens, F is the effective focal length of the optical lens, R1 is the curvature radius of the first side surface of the first lens, TTL is the distance from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis, R6 is the curvature radius of the second side surface of the third lens, and T34 is the air spacing between the third lens and the fourth lens on the optical axis.

2. The optical lens according to claim 1, characterized in that: The optical lens satisfies: 9≤TTL / F≤11, wherein TTL is the distance from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis, and F is the effective focal length of the optical lens.

3. The optical lens according to claim 1, characterized in that: The optical lens satisfies: 72°≤(FOV×F) / H≤80°, wherein FOV is the maximum field of view angle of the optical lens, F is the effective focal length of the optical lens, and H is the image height corresponding to the maximum field of view angle of the optical lens.

4. The optical lens according to claim 1, characterized in that: The optical lens satisfies: 0.4≤F / H≤0.6, wherein F is the effective focal length of the optical lens, and H is the image height corresponding to the maximum field angle of the optical lens.

5. The optical lens according to claim 1, characterized in that: The optical lens satisfies: -4≤F1 / F≤-1, wherein F1 is the effective focal length of the first lens, and F is the effective focal length of the optical lens.

6. The optical lens according to claim 1, characterized in that: The optical lens satisfies: |F2 / F|≥5, wherein F2 is the effective focal length of the second lens, and F is the effective focal length of the optical lens.

7. The optical lens according to claim 1, characterized in that: The optical lens satisfies: 3≤F4 / F≤8, wherein F4 is the effective focal length of the fourth lens, and F is the effective focal length of the optical lens.

8. The optical lens according to claim 1, characterized in that: The optical lens satisfies: 3.5≤F5 / F≤7, wherein F5 is the effective focal length of the fifth lens, and F is the effective focal length of the optical lens.

9. The optical lens according to claim 1, characterized in that: The optical lens satisfies: 4≤F6 / F≤8.5, wherein F6 is the effective focal length of the sixth lens, and F is the effective focal length of the optical lens.

10. The optical lens according to claim 1, characterized in that: The optical lens satisfies: 0.15≤|(H / 2-F×θ / 2) / (F×θ / 2)|≤0.4, wherein H is the image height corresponding to the maximum field angle of the optical lens, F is the effective focal length of the optical lens, and θ is the radian value corresponding to the maximum field angle of the optical lens.

11. The optical lens according to claim 1, characterized in that: The optical lens satisfies: 0.02≤T34 / TTL≤0.16, wherein T34 is the air interval between the third lens and the fourth lens on the optical axis, and TTL is the distance from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis.

12. The optical lens according to claim 1, characterized in that: The optical lens meets at least one of the following conditions: F / ENPD≤1.5, 0.025≤TTL / H / FOV×1°≤0.04, 0.08≤BFL / TTL≤0.25, 0.01≤D / H / FOV×1°≤0.02, 0.65mm -1 ≤D / H / F≤0.85mm -1 , 0.45≤(F×θ) / D≤0.65, -1≤R8 / TTL≤-0.3, 0.1≤R9 / TTL≤0.5, -3≤R12 / TTL≤-0.1, 6mm≤D12×BFL / H≤12mm, 1≤D / D12≤1.6, 2≤D / H≤2.8, -4≤R8 / R9≤-1.5, 0.5≤R5 / R6≤1.1, 0≤T45 / TTL≤0.035, 0.9≤CT5 / CT6≤1.4, 0.8≤R5 / (R6+d5)≤1.3; Wherein, F is the effective focal length of the optical lens, ENPD is the entrance pupil diameter of the optical lens, TTL is the distance from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis, 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, BFL is the distance from the center of the second side surface of the sixth lens to the imaging surface of the optical lens on the optical axis, D is the maximum light aperture of the first side surface of the first lens corresponding to 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, and D12 is the maximum field of view of the optical lens. The maximum clear aperture of the second side surface of the sixth lens, R5 is the curvature radius of the first side surface of the third lens, R6 is the curvature radius of the second side surface of the third lens, R8 is the curvature radius of the second side surface of the fourth lens, R9 is the curvature radius of the first side surface of the fifth lens, R12 is the curvature radius of the second side surface of the sixth lens, T45 is the air gap between the fourth lens and the fifth lens on the optical axis, CT5 is the center thickness of the fifth lens on the optical axis, CT6 is the center thickness of the sixth lens on the optical axis, and d5 is the center thickness of the third lens on the optical axis.

13. The optical lens according to any one of claims 1 to 12, characterized in that: The second lens has positive or negative refractive power.

14. The optical lens according to any one of claims 1 to 12, characterized in that: The second lens has positive power, and at least one of the first side surface and the second side surface is a convex surface; or The second lens has negative optical power, a first side surface of the second lens is convex, and a second side surface of the second lens is concave.

15. The optical lens according to any one of claims 1 to 12, characterized in that: The third lens has positive or negative power.

16. The optical lens according to any one of claims 1 to 12, characterized in that: The first side surface of the fourth lens is a convex surface or a concave surface.

17. The optical lens according to any one of claims 1 to 12, characterized in that: The second side surface of the fifth lens is a convex surface or a concave surface.

18. The optical lens according to any one of claims 1 to 12, characterized in that: The first side surface of the sixth lens is a convex surface or a concave surface.

19. The optical lens according to claim 1, characterized in that: The optical lens meets at least one of the following conditions: 4.8≤R1 / TTL≤16, -4.42≤R6 / T34<-1.96, 9.64≤TTL / F≤11.29, 75.24°≤(FOV×F) / H≤77.98°, 0.51≤F / H≤0.53, -2.47≤F1 / F≤-2.10, 19.2≤|F2 / F|≤122.1, 15.4≤|F3 / F|≤122.2, 4.30≤F4 / F≤7.44, 4.93≤F5 / F≤5.95, 4.0≤F6 / F≤7.9, 0.23≤|(H / 2-F×θ / 2) / (F×θ / 2)|≤0.27, 0.04≤T34 / TTL≤0.15, 1.0≤F / ENPD≤1.2, 0.03≤TTL / H / FOV×1°≤0.04, 0.1≤BFL / TTL≤0.2, 0.01≤D / H / FOV×1°≤0.02, 0.7mm -1 ≤D / H / F≤0.8mm -1 , 0.51≤(F×θ) / D≤0.59, -0.81≤R8 / TTL≤-0.52, 0.25≤R9 / TTL≤0.31, -2.46≤R12 / TTL≤-0.46, 7.74mm≤D12×BFL / H≤11.91mm, 1.22≤D / D12≤1.46, 2.32≤D / H≤2.62, -2.85≤R8 / R9≤-1.81, 0.70≤R5 / R6≤0.94, 0.002≤T45 / TTL≤0.03, 1.08≤CT5 / CT6≤1.28, 0.85≤R5 / (R6+d5)≤1.26; Wherein, R1 is the radius of curvature of the first side surface of the first lens, T34 is the air gap between the third lens and the fourth lens on the optical axis, 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, F5 is the effective focal length of the fifth lens, F6 is the effective focal length of the sixth lens, F is the effective focal length of the optical lens, ENPD is the entrance pupil diameter of the optical lens, TTL is the distance from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis, H is the image height corresponding to the maximum field of view angle of the optical lens, FOV is the maximum field of view angle of the optical lens, and BFL is the distance from the center of the second side surface of the sixth lens to the imaging surface of the optical lens on the optical axis. The distance on the optical axis, D is the maximum light-clearance diameter of the first side surface of the first lens corresponding to 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, D12 is the maximum light-clearance diameter of the second side surface of the sixth lens, R5 is the curvature radius of the first side surface of the third lens, R6 is the curvature radius of the second side surface of the third lens, R8 is the curvature radius of the second side surface of the fourth lens, R9 is the curvature radius of the first side surface of the fifth lens, R12 is the curvature radius of the second side surface of the sixth lens, T45 is the air interval between the fourth lens and the fifth lens on the optical axis, CT5 is the center thickness of the fifth lens on the optical axis, CT6 is the center thickness of the sixth lens on the optical axis, and d5 is the center thickness of the third lens on the optical axis.

20. An electronic device, characterized in that: The invention comprises an optical lens according to any one of claims 1 to 19 and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

Images