Optical lenses and electronic equipment

Abstract

The present application discloses an optical lens and an electronic device including the optical lens. The optical lens includes, in order from the object side to the image side along the optical axis: a first lens with optical power, whose object side surface is convex and whose image side surface is concave; a second lens with optical power; a third lens with optical power; a fourth lens with positive optical power; and a fifth lens with optical power, whose object side surface is convex; wherein the second lens and the third lens are cemented together to form a cemented lens.

Description

Technical Field

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

[0002] With the development of science and technology and the widespread application of high-tech, automobile assisted driving technology has gradually developed and matured. In automobile assisted driving technology, the control system to obtain information about the external environment is a very important part. Among the hardware devices that rely on obtaining information about the external environment, the vehicle-mounted lens is a very important component. And the important role of the vehicle-mounted lens is becoming increasingly prominent.

[0003] As the "eyes" of cars, automotive optical lenses have been used more and more widely in recent years as cars become more intelligent. In addition, for safety reasons, people have higher and higher requirements for the performance of automotive lenses. Conventional automotive optical lenses use 6 or more lens structures to improve resolution, but this will seriously affect the miniaturization of automotive lenses.

[0004] Therefore, the current market needs a high-resolution automotive lens with small aberrations, miniaturization or low cost to meet application requirements. Summary of the invention

[0005] On one hand, the present application provides an optical lens, characterized in that the optical lens includes, in order from the object side to the image side along the optical axis: a first lens with optical power, whose object side surface is convex and whose image side surface is concave; a second lens with optical power; a third lens with optical power; a fourth lens with positive optical power; and a fifth lens with optical power, whose object side surface is convex; wherein the second lens and the third lens are cemented together to form a cemented lens.

[0006] In one embodiment, the first lens has negative optical power.

[0007] In one embodiment, the first lens has positive optical power.

[0008] In one embodiment, the second lens has positive optical power, and its object side surface is convex, and its image side surface is convex; the third lens has negative optical power, and its object side surface is concave, and its image side surface is concave.

[0009] In one embodiment, the second lens has negative optical power, and its object side surface is concave, and its image side surface is concave; the third lens has positive optical power, and its object side surface is convex, and its image side surface is convex.

[0010] In one embodiment, the object-side surface of the fourth lens is concave, and the image-side surface is convex.

[0011] In one embodiment, the object-side surface of the fourth lens is convex, and the image-side surface is concave.

[0012] In one embodiment, the object-side surface of the fourth lens is convex, and the image-side surface is convex.

[0013] In one embodiment, the fifth lens element has positive refractive power, and the image-side surface of the fifth lens element is concave.

[0014] In one embodiment, the fifth lens element has positive refractive power, and the image-side surface of the fifth lens element is convex.

[0015] In one embodiment, the fifth lens element has negative optical power, and the image side surface of the fifth lens element is concave.

[0016] In one embodiment, the distance TTL from the object side of the first lens to the imaging surface of the optical lens on the optical axis, the maximum field of view FOV of the optical lens, and the image height H corresponding to the maximum field of view FOV of the optical lens may satisfy: TTL / H / FOV≤0.06.

[0017] In one embodiment, the distance TTL from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis and the total effective focal length F of the optical lens may satisfy: TTL / F≤3.

[0018] In one embodiment, a distance BFL from the image side surface of the fifth lens to the imaging surface of the optical lens on the optical axis and a distance TL from the object side surface of the first lens to the image side surface of the fifth lens on the optical axis may satisfy: BFL / TL≥0.2.

[0019] In one embodiment, the maximum field of view FOV of the optical lens, the maximum light clearance D of the object side of the first lens corresponding to the maximum field of view FOV of the optical lens, and the image height H corresponding to the maximum field of view FOV of the optical lens may satisfy: D / H / FOV≤0.025.

[0020] In one embodiment, the effective focal length F23 of the cemented lens formed by cementing the second lens and the third lens and the total effective focal length F of the optical lens may satisfy: |F23 / F|≤20.

[0021] In one embodiment, the effective focal length F2 of the second lens and the effective focal length F3 of the third lens may satisfy: 0.1≤|F2 / F3|≤1.

[0022] In one embodiment, the maximum field of view FOV of the optical lens, the total effective focal length F of the optical lens, and the image height H corresponding to the maximum field of view FOV of the optical lens may satisfy: (FOV×F) / H≥30.

[0023] In one embodiment, a central curvature radius R1 of the object-side surface of the first lens, a central curvature radius R2 of the image-side surface of the first lens, and a central thickness d1 of the first lens may satisfy: 0.3≤R1 / (R2+d1)≤1.7.

[0024] In one embodiment, a central curvature radius R1 of the object-side surface of the first lens and a central curvature radius R2 of the image-side surface of the first lens may satisfy: 0.4≤R1 / R2≤3.

[0025] In one embodiment, the distance T12 between the first lens and the second lens on the optical axis and the distance TTL from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis may satisfy: T12 / TTL≤0.12.

[0026] In one embodiment, a curvature radius R5 of the image-side surface of the third lens and a curvature radius R7 of the object-side surface of the fourth lens may satisfy: 2≤|(R5-R7) / (R5+R7)|≤80.

[0027] In one embodiment, a center thickness d1 of the first lens on the optical axis and a spacing distance T12 between the first lens and the second lens on the optical axis may satisfy: T12 / d1≤2.

[0028] In one embodiment, the optical lens further includes an aperture stop, and the aperture stop is located between the third lens and the fourth lens.

[0029] On the other hand, the present application provides such an optical lens. The optical lens includes, in order from the object side to the image side along the optical axis: a first lens with optical power; a second lens with optical power; a third lens with optical power; a fourth lens with positive optical power; and a fifth lens with optical power; wherein the curvature radius R5 of the image side surface of the third lens and the curvature radius R7 of the object side surface of the fourth lens can satisfy: 2≤|(R5-R7) / (R5+R7)|≤80.

[0030] In one embodiment, the object-side surface of the first lens is a convex surface, and the image-side surface of the first lens is a concave surface.

[0031] In one embodiment, the object side surface of the fifth lens is a convex surface.

[0032] In one embodiment, the first lens has negative optical power.

[0033] In one embodiment, the first lens has positive optical power.

[0034] In one embodiment, the second lens and the third lens are cemented to form a cemented lens.

[0035] In one embodiment, the second lens has positive optical power, and its object side surface is convex, and its image side surface is convex; the third lens has negative optical power, and its object side surface is concave, and its image side surface is concave.

[0036] In one embodiment, the object side surface is concave, and the image side surface is concave; the third lens has positive optical power, and the object side surface is convex, and the image side surface is convex.

[0037] In one embodiment, the object-side surface of the fourth lens is concave, and the image-side surface is convex.

[0038] In one embodiment, the object-side surface of the fourth lens is convex, and the image-side surface is concave.

[0039] In one embodiment, the object-side surface of the fourth lens is convex, and the image-side surface is convex.

[0040] In one embodiment, the fifth lens element has positive refractive power, and the image-side surface of the fifth lens element is concave.

[0041] In one embodiment, the fifth lens element has positive refractive power, and the image-side surface of the fifth lens element is convex.

[0042] In one embodiment, the fifth lens element has negative optical power, and the image side surface of the fifth lens element is concave.

[0043] In one embodiment, the distance TTL from the object side of the first lens to the imaging surface of the optical lens on the optical axis, the maximum field of view FOV of the optical lens, and the image height H corresponding to the maximum field of view FOV of the optical lens may satisfy: TTL / H / FOV≤0.06.

[0044] In one embodiment, the distance TTL from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis and the total effective focal length F of the optical lens may satisfy: TTL / F≤3.

[0045] In one embodiment, a distance BFL from the image side surface of the fifth lens to the imaging surface of the optical lens on the optical axis and a distance TL from the object side surface of the first lens to the image side surface of the fifth lens on the optical axis may satisfy: BFL / TL≥0.2.

[0046] In one embodiment, the maximum field of view FOV of the optical lens, the maximum light clearance D of the object side of the first lens corresponding to the maximum field of view FOV of the optical lens, and the image height H corresponding to the maximum field of view FOV of the optical lens may satisfy: D / H / FOV≤0.025.

[0047] In one embodiment, the effective focal length F23 of the cemented lens formed by cementing the second lens and the third lens and the total effective focal length F of the optical lens may satisfy: |F23 / F|≤20.

[0048] In one embodiment, the effective focal length F2 of the second lens and the effective focal length F3 of the third lens may satisfy: 0.1≤|F2 / F3|≤1.

[0049] In one embodiment, the maximum field of view FOV of the optical lens, the total effective focal length F of the optical lens, and the image height H corresponding to the maximum field of view FOV of the optical lens may satisfy: (FOV×F) / H≥30.

[0050] In one embodiment, a central curvature radius R1 of the object-side surface of the first lens, a central curvature radius R2 of the image-side surface of the first lens, and a central thickness d1 of the first lens may satisfy: 0.3≤R1 / (R2+d1)≤1.7.

[0051] In one embodiment, a central curvature radius R1 of the object-side surface of the first lens and a central curvature radius R2 of the image-side surface of the first lens may satisfy: 0.4≤R1 / R2≤3.

[0052] In one embodiment, the distance T12 between the first lens and the second lens on the optical axis and the distance TTL from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis may satisfy: T12 / TTL≤0.12.

[0053] In one embodiment, a center thickness d1 of the first lens on the optical axis and a spacing distance T12 between the first lens and the second lens on the optical axis may satisfy: T12 / d1≤2.

[0054] In one embodiment, the optical lens further includes an aperture stop, and the aperture stop is located between the third lens and the fourth lens.

[0055] On the other hand, the present application provides an electronic device, including the optical lens provided according to the present application and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

[0056] The present application adopts five lenses, and by optimizing the shape, optical focal length, etc. of each lens, the optical lens has at least one beneficial effect of high resolution, small aberration, miniaturization, and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Other features, purposes and advantages of the present application will become more apparent through the following detailed description of non-limiting embodiments in conjunction with the accompanying drawings. In the accompanying drawings:

[0058] Figure 1 A schematic diagram showing the structure of an optical lens according to Embodiment 1 of the present application;

[0059] Figure 2 A schematic diagram showing the structure of an optical lens according to Embodiment 2 of the present application;

[0060] Figure 3 A schematic diagram showing the structure of an optical lens according to Embodiment 3 of the present application;

[0061] Figure 4 A schematic diagram showing the structure of an optical lens according to Embodiment 4 of the present application;

[0062] Figure 5 A schematic diagram showing the structure of an optical lens according to Embodiment 5 of the present application;

[0063] Figure 6 A schematic diagram showing the structure of an optical lens according to Embodiment 6 of the present application;

[0064] Figure 7 A schematic diagram showing the structure of an optical lens according to Embodiment 7 of the present application; and

[0065] Figure 8 A schematic diagram showing the structure of an optical lens according to Example 8 of the present application. DETAILED DESCRIPTION

[0066] In order to better understand the present application, a more detailed description will be made of various aspects of the present application with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and are not intended to limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0067] 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.

[0068] 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.

[0069] 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 subject is called the object side of the lens, and the surface of each lens closest to the imaging side is called the image side of the lens.

[0070] 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.

[0071] 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 the same meaning as 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.

[0072] 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.

[0073] The features, principles and other aspects of the present application are described in detail below.

[0074] In an exemplary embodiment, the optical lens includes, for example, five lenses having optical power, namely, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens, which are arranged in sequence from the object side to the image side along the optical axis.

[0075] In an exemplary embodiment, the first lens may have a positive focal power or a negative focal power. The first lens may have a convex-concave surface. The setting of the focal power and surface shape of the first lens is conducive to collecting as much light of a large field of view as possible to enter the rear optical lens, which can increase the amount of light passing through and is conducive to achieving an overall large field of view. In practical applications, considering the outdoor installation and use environment of the vehicle-mounted lens, it will be in bad weather such as rain and snow. The first lens is a crescent shape facing the object side, and specifically the object side is convex, which is conducive to the sliding of water droplets, and is also conducive to improving the imaging quality while avoiding excessive divergence of light on the object side, which is conducive to controlling the aperture of the rear lens.

[0076] In an exemplary embodiment, one of the second lens and the third lens has a positive focal power, and the other has a negative focal power, and the two form a lens group. This arrangement is conducive to shortening the overall length of the lens while maintaining the resolution. Exemplarily, one of the second lens and the first lens has a positive focal power, and the other has a negative focal power.

[0077] Exemplarily, the second lens has positive optical power and has a convex-convex surface type, and the third lens has negative optical power and has a concave-concave surface type.

[0078] Exemplarily, the second lens has negative optical power and has a concave-concave surface type, and the third lens has positive optical power and has a convex-convex surface type.

[0079] In an exemplary embodiment, the fourth lens may have positive focal power. The fourth lens with positive focal power can further correct the aberration generated by the lens in front of it (on the object side), and at the same time make the light beam converge again. By controlling the focal length of the fourth lens, the light trend from the first lens to the third lens can be controlled, making the lens structure compact. Exemplarily, the fourth lens may have a convex-concave surface type, a convex-convex surface type, or a concave-convex surface type.

[0080] In an exemplary embodiment, the fifth lens may have positive or negative power, and its object side surface is convex. The fifth lens can smoothly transition the light collected by the fourth lens to the imaging surface, and can reduce aberrations such as field curvature of the optical lens. Exemplarily, the fifth lens may have a convex-concave surface type or a convex-convex surface type.

[0081] In an exemplary embodiment, the second lens and the third lens are glued to form a glued lens. The image side surface of the second lens and the object side surface of the third lens complement each other and are glued together, which is beneficial for smoothly transitioning the light emitted from the first lens to the imaging surface and reducing the total length of the optical lens, and is also beneficial for correcting various aberrations of the optical lens, so as to improve the system resolution and optimize the distortion under the premise of compact optical lens structure. The above-mentioned gluing method between the lenses has at least one of the following advantages: reducing the chromatic aberration of the entire lens by balancing the residual chromatic aberration in the lens; omitting the air gap between the two, so that the optical lens is compact as a whole and meets the requirements of miniaturization; reducing the light loss caused by reflection between the lenses and improving the illumination; reducing the tolerance sensitivity problems such as tilt / eccentricity generated by the lens unit during the assembly process, and can also simplify the assembly procedures in the lens manufacturing process and improve the production yield. The above-mentioned glued lens can have an aspherical surface to further improve the resolution quality.

[0082] In an exemplary embodiment, the optical lens according to the present application may satisfy: TTL / F≤3, wherein TTL is the distance from the object side of the first lens to the imaging surface of the optical lens on the optical axis, and F is the total effective focal length of the optical lens. More specifically, TTL and F may further satisfy: TTL / F≤2.5. Satisfying TTL / F≤3 is conducive to miniaturization of the optical lens.

[0083] In an exemplary embodiment, the optical lens according to the present application may satisfy: TTL / H / FOV≤0.06, wherein TTL is the distance from the object side of the first lens to the imaging surface of the optical lens on the optical axis, FOV is the maximum field of view of the optical lens, and H is the image height corresponding to the maximum field of view FOV of the optical lens. More specifically, TTL, H, and FOV may further satisfy: TTL / H / FOV≤0.05. Satisfying TTL / H / FOV≤0.06 is conducive to miniaturization of the optical lens.

[0084] In an exemplary embodiment, the optical lens according to the present application may satisfy: TTL≤15, where TTL is the distance from the object side of the first lens to the imaging surface of the optical lens on the optical axis. More specifically, TTL may further satisfy: TTL≤10.5. Satisfying TTL≤15 is conducive to miniaturization of the optical lens.

[0085] In an exemplary embodiment, the optical lens according to the present application may satisfy: BFL / TL≥0.2, wherein BFL is the distance from the image side of the fifth lens to the imaging surface of the optical lens on the optical axis, and TL is the distance from the object side of the first lens to the image side of the fifth lens on the optical axis. More specifically, BFL and TL may further satisfy: BFL / TL≥0.3. Meeting BFL / TL≥0.2 is conducive to achieving a longer back focus on the basis of miniaturization, which is conducive to the assembly of the module. Moreover, after the five lenses are combined, the length is short and the structure is compact, which can reduce the sensitivity of the lens to MTF, thereby improving the production yield and reducing the production cost.

[0086] In an exemplary embodiment, the optical lens according to the present application may satisfy: D / H / FOV≤0.025, wherein FOV is the maximum field of view of the optical lens, D is the maximum aperture of the object side of the first lens corresponding to the maximum field of view FOV of the optical lens, and H is the image height corresponding to the maximum field of view FOV of the optical lens. More specifically, D, H, and FOV may further satisfy: D / H / FOV≤0.02. Satisfying D / H / FOV≤0.025 is conducive to making the front port diameter of the optical lens small, thereby achieving miniaturization.

[0087] In an exemplary embodiment, the optical lens according to the present application may satisfy: |F23 / F|≤20, wherein F23 is the effective focal length of the cemented lens formed by cementing the second lens and the third lens, and F is the total effective focal length of the optical lens. More specifically, F23 and F may further satisfy: |F23 / F|≤15. Satisfying |F23 / F|≤20 can control the light trend between the first lens and the fourth lens, reduce the aberration caused by the large-angle light entering through the first lens, and make the lens structure compact, which is conducive to the miniaturization of the optical lens.

[0088] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.1≤|F2 / F3|≤1, where F2 is the effective focal length of the second lens and F3 is the effective focal length of the third lens. More specifically, F2 and F3 may further satisfy: 0.5≤|F2 / F3|≤1. Satisfying 0.1≤|F2 / F3|≤1 makes the focal length value of the second lens and the focal length value of the third lens similar, which is conducive to the smooth transition of light and can improve the resolution quality of the optical lens.

[0089] In an exemplary embodiment, the optical lens according to the present application may satisfy: (FOV×F) / H≥30, where FOV is the maximum field of view of the optical lens, F is the total effective focal length of the optical lens, and H is the image height corresponding to the maximum field of view FOV of the optical lens. More specifically, FOV, F, and H may further satisfy: (FOV×F) / H≥35. Satisfying (FOV×F) / H≥30 allows the optical lens to simultaneously satisfy telephoto and large field of view.

[0090] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.3≤R1 / (R2+d1)≤1.7, wherein R1 is the central curvature radius of the object side of the first lens, R2 is the central curvature radius of the image side of the first lens, and d1 is the central thickness of the first lens. More specifically, R1, R2, and d1 may further satisfy: 0.4≤R1 / (R2+d1)≤1.5. Satisfying 0.3≤R1 / (R2+d1)≤1.7 allows the first lens to have a special lens shape setting, in which there is an optical path difference between the peripheral light and the central light, and the central light can be diverged to enter the optical lens. It is also beneficial to reduce the front port diameter of the lens and reduce the volume, so as to facilitate miniaturization and reduce costs.

[0091] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.4≤R1 / R2≤3, wherein R1 is the central curvature radius of the object side of the first lens, and R2 is the central curvature radius of the image side of the first lens. More specifically, R1 and R2 may further satisfy: 0.45≤R1 / R2≤2. Satisfying 0.4≤R1 / R2≤3 can enable the first lens to collect more light and increase the light transmission capacity of the lens.

[0092] In an exemplary embodiment, the optical lens according to the present application may satisfy: T12 / TTL≤0.12, wherein T12 is the distance between the first lens and the second lens on the optical axis, and TTL is the distance between the object side of the first lens and the imaging surface of the optical lens on the optical axis. More specifically, T12 and TTL may further satisfy: T12 / TTL≤0.09. Satisfying T12 / TTL≤0.12 is conducive to making the lens structure compact and reducing the overall length of the lens.

[0093] In an exemplary embodiment, the optical lens according to the present application may satisfy: 2≤|(R5-R7) / (R5+R7)|≤80, wherein R5 is the radius of curvature of the image side surface of the third lens, and R7 is the radius of curvature of the object side surface of the fourth lens. Satisfying 2≤|(R5-R7) / (R5+R7)|≤80 can correct the aberration of the optical lens. And it can ensure that the incident angle of the light emitted from the third lens will not be too large when it is incident on the object side surface of the fourth lens, thereby reducing the tolerance sensitivity of the optical lens. If it exceeds the upper limit value, the aberration of the optical lens cannot be fully corrected; if it is lower than the lower limit value, the incident angle of the light emitted from the third lens when it is incident on the object side surface of the fourth lens will be too large, which will increase the sensitivity of the optical lens. More specifically, R5 and R7 may satisfy: 2.5≤|(R5-R7) / (R5+R7)|≤75.

[0094] In an exemplary embodiment, the optical lens according to the present application may satisfy: T12 / d1≤2, wherein d1 is the center thickness of the first lens on the optical axis, and T12 is the spacing distance between the first lens and the second lens on the optical axis. Satisfying T12 / d1≤2 can effectively reduce the thickness and spacing sensitivity of the optical lens, so that the optical lens meets the requirements of processability. At the same time, by configuring the on-axis spacing distance of the lenses, it is beneficial to obtain a compact optical lens. More specifically, d1 and T12 may satisfy: T12 / d1≤1.4.

[0095] In an exemplary embodiment, the optical lens according to the present application may satisfy: F / H≤4, where F is the total effective focal length of the optical lens, and H is the image height corresponding to the maximum field of view FOV of the optical lens. Satisfying F / H≤4 helps the optical lens to better cooperate with the photosensitive element. The photosensitive element can image a larger object side space. More specifically, F and H may satisfy ≤1.5.

[0096] In an exemplary embodiment, the optical lens according to the present application may satisfy: TTL / H≤5, where TTL is the distance from the object side of the first lens to the imaging surface of the optical lens on the optical axis, and H is the image height corresponding to the maximum field of view FOV of the optical lens. Satisfying TTL / H≤5 is conducive to realizing a miniaturized optical lens. More specifically, TTL and H may satisfy TTL / H≤4.

[0097] In an exemplary embodiment, the optical lens according to the present application may satisfy: |F1 / F|≥1.5, where F1 is the effective focal length of the first lens and F is the total effective focal length of the optical lens. More specifically, F1 and F may further satisfy |F1 / F|≥1.7. Satisfying |F1 / F|≥1.5 can control the focal length of the first lens, thereby facilitating the reduction of the front port diameter of the optical lens and the improvement of its imaging quality.

[0098] In an exemplary embodiment, the optical lens according to the present application may satisfy: |F2 / F|≥0.3, where F2 is the effective focal length of the second lens, and F is the total effective focal length of the optical lens. More specifically, F2 and F may further satisfy |F2 / F|≥0.35. Satisfying |F2 / F|≥0.3 can control the focal length of the second lens, which is beneficial to improving the imaging quality of the lens.

[0099] In an exemplary embodiment, the optical lens according to the present application may satisfy: |F3 / F|≥0.3, where F3 is the effective focal length of the third lens, and F is the total effective focal length of the optical lens. More specifically, F3 and F may further satisfy |F3 / F|≥0.45. When |F3 / F|≥0.3 is satisfied, the focal length of the third lens may be controlled, thereby controlling the light trend from the first lens to the third lens, making the lens structure compact, and facilitating the miniaturization of the lens.

[0100] In an exemplary embodiment, the optical lens according to the present application may satisfy: |F4 / F|≥1, where F4 is the effective focal length of the fourth lens, and F is the total effective focal length of the optical lens. More specifically, F4 and F may further satisfy |F4 / F|≥1.2. Satisfying |F4 / F|≥1 can control the focal length of the fourth lens, which is beneficial to improving the imaging quality of the lens.

[0101] In an exemplary embodiment, the optical lens according to the present application may satisfy: |F5 / F|≥1, where F5 is the effective focal length of the fifth lens and F is the total effective focal length of the optical lens. More specifically, F5 and F may further satisfy |F5 / F|≥1.3. Satisfying |F5 / F|≥1 can control the focal length of the fifth lens, which is beneficial to reducing the diameter of the lens rear port and improving its imaging quality.

[0102] In an exemplary embodiment, the optical lens according to the present application may satisfy: Nd2≥1.65, where Nd2 is the refractive index of the second lens. Satisfying Nd2≥1.65, that is, the material of the second lens is a high refractive index material, is conducive to reducing the diameter of the lens front port and improving the imaging quality.

[0103] In an exemplary embodiment, an aperture for limiting the light beam may be provided between the third lens and the fourth lens to further improve the imaging quality of the optical lens. The aperture placed between the third lens and the fourth lens is conducive to effectively converging the light entering the optical lens, reducing the lens aperture of the optical lens, converging the front and rear light rays at the same time, shortening the total length of the optical lens, reducing the lens apertures before and after it, and achieving high light throughput at the same time. In an embodiment of the present application, the aperture may be provided near the image side surface of the third lens, or near the object side surface of the fourth lens. However, it should be noted that the position of the aperture disclosed herein is only an example and not a limitation; in alternative embodiments, the aperture may also be provided at other positions according to actual needs.

[0104] In an exemplary embodiment, as needed, the optical lens according to the present application may further include a filter disposed between the fifth lens and the imaging plane to filter light with different wavelengths. The optical lens according to the present application may further include a protective glass disposed between the fifth lens and the imaging plane to prevent damage to the image-side element (e.g., chip) of the optical lens.

[0105] In an exemplary embodiment, the first lens, the second lens, the third lens, the fourth lens and the fifth lens may all have an aspherical mirror surface. The characteristic of the aspherical lens is that the curvature changes continuously from the center of the lens to the periphery. Unlike a spherical lens with a constant curvature from the center of the lens to the periphery, an aspherical lens has a better curvature radius characteristic and has the advantages of improving distortion aberration and improving astigmatism aberration. After 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 the aspherical lens helps to correct the system aberration and improve the resolution. Specifically, at least one lens of the first lens, the second lens, the third lens, the fourth lens and the fifth lens is an aspherical lens, which is beneficial to improving the resolution quality of the optical system.

[0106] In an exemplary embodiment, the first to fifth lenses in the optical lens may all be made of glass. An optical lens made of glass can suppress the deviation of the back focus of the optical lens with temperature changes to improve system stability. At the same time, the use of glass material can avoid lens imaging blur caused by high and low temperature changes in the use environment, which affects the normal use of the lens. Specifically, when focusing on resolution quality and reliability, the first to fifth lenses may all be glass aspherical lenses. Of course, in applications where temperature stability requirements are lower, the first to fifth lenses in the optical lens may also all be made of plastic. Using plastic to make optical lenses can effectively reduce production costs.

[0107] According to the above-mentioned embodiment of the present application, the optical lens has at least one beneficial effect of high resolution, small aberration, good imaging effect, etc., by reasonably setting the shape and focal length of each lens, while using only five lenses. At the same time, the optical lens also takes into account the production and assembly requirements of a short total lens length, a small volume, and a simple structure, and can be well matched with the vehicle-mounted chip. At the same time, the optical lens has good temperature adaptability and can ensure that the imaging clarity is still relatively perfect within a certain temperature range.

[0108] According to the above-mentioned embodiment of the optical lens of the present application, a cemented lens is provided to share the overall chromatic aberration correction of the lens, which is beneficial for correcting lens aberrations, improving lens resolution quality, reducing coordination sensitivity problems, making the overall structure of the optical lens compact, meeting miniaturization requirements, and also beneficial for improving production yield.

[0109] However, those skilled in the art should understand that, without departing from the technical solution claimed in the present application, the number of lenses constituting the lens can be changed to obtain the various results and advantages described in this specification. For example, although five lenses are described as an example in the embodiment, the optical lens is not limited to including five lenses. If necessary, the optical lens may also include other numbers of lenses.

[0110] Specific embodiments of the optical lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0111] Example 1

[0112] The following reference Figure 1 The optical lens according to Example 1 of the present application is described. Figure 1 A schematic structural diagram of an optical lens according to Example 1 of the present application is shown.

[0113] like Figure 1 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the object side to the image side along the optical axis.

[0114] The first lens L1 is a meniscus lens with negative focal power, whose object side surface S1 is convex and whose image side surface S2 is concave. The second lens L2 is a biconvex lens with positive focal power, whose object side surface S3 is convex and whose image side surface S4 is convex. The third lens L3 is a biconcave lens with negative focal power, whose object side surface S4 is concave and whose image side surface S5 is concave. The fourth lens L4 is a meniscus lens with positive focal power, whose object side surface S7 is concave and whose image side surface S8 is convex. The fifth lens L5 is a meniscus lens with positive focal power, whose object side surface S9 is convex and whose image side surface S10 is concave. The second lens L2 and the third lens L3 can be cemented to form a cemented lens. In this embodiment, the mirror surfaces of each lens are spherical.

[0115] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality. For example, the stop STO may be disposed close to the object-side surface S7 of the fourth lens L4.

[0116] Exemplarily, the optical lens may further include a filter L6 with no optical power and a protective glass L7 with no optical power, the filter L6 having an object side surface S11 and an image side surface S12, and the protective glass L7 having an object side surface S13 and an image side surface S14. The filter L6 may be used to correct color deviation. The protective glass L7 may be used to protect the image sensor chip IMA located at the imaging surface S15. The light from the object sequentially passes through each surface S1 to S14 and is finally imaged on the imaging surface S15.

[0117] Table 1 shows the central curvature radius R, thickness T (it should be understood that the thickness T of the row where S1 is located is the central thickness T1 of the first lens L1, the interval d of the row where S2 is located is the air interval d12 between the first lens L1 and the second lens L2, and so on), refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 1.

[0118]

[0119] Table 1

[0120] Example 2

[0121] The following reference Figure 2 An optical lens according to Embodiment 2 of the present application is described. Figure 2 A schematic structural diagram of an optical lens according to Embodiment 2 of the present application is shown.

[0122] like Figure 2 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the object side to the image side along the optical axis.

[0123] The first lens L1 is a meniscus lens with negative focal power, whose object side surface S1 is convex and whose image side surface S2 is concave. The second lens L2 is a biconvex lens with positive focal power, whose object side surface S3 is convex and whose image side surface S4 is convex. The third lens L3 is a biconcave lens with negative focal power, whose object side surface S4 is concave and whose image side surface S5 is concave. The fourth lens L4 is a meniscus lens with positive focal power, whose object side surface S7 is concave and whose image side surface S8 is convex. The fifth lens L5 is a meniscus lens with positive focal power, whose object side surface S9 is convex and whose image side surface S10 is concave. The second lens L2 and the third lens L3 can be cemented to form a cemented lens. In this embodiment, the mirror surfaces of each lens are spherical.

[0124] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality. For example, the stop STO may be disposed close to the object-side surface S7 of the fourth lens L4.

[0125] Exemplarily, the optical lens may further include a filter L6 with no optical power and a protective glass L7 with no optical power, the filter L6 having an object side surface S11 and an image side surface S12, and the protective glass L7 having an object side surface S13 and an image side surface S14. The filter L6 may be used to correct color deviation. The protective glass L7 may be used to protect the image sensor chip IMA located at the imaging surface S15. The light from the object sequentially passes through each surface S1 to S14 and is finally imaged on the imaging surface S15.

[0126] Table 2 shows the central curvature radius R, thickness T, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 2.

[0127]

[0128] Table 2

[0129] Example 3

[0130] The following reference Figure 3 An optical lens according to Example 3 of the present application is described. Figure 3 A schematic structural diagram of an optical lens according to Example 3 of the present application is shown.

[0131] like Figure 3 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the object side to the image side along the optical axis.

[0132] The first lens L1 is a meniscus lens with negative focal power, whose object side surface S1 is convex and whose image side surface S2 is concave. The second lens L2 is a biconvex lens with positive focal power, whose object side surface S3 is convex and whose image side surface S4 is convex. The third lens L3 is a biconcave lens with negative focal power, whose object side surface S4 is concave and whose image side surface S5 is concave. The fourth lens L4 is a meniscus lens with positive focal power, whose object side surface S7 is concave and whose image side surface S8 is convex. The fifth lens L5 is a biconvex lens with positive focal power, whose object side surface S9 is convex and whose image side surface S10 is convex. The second lens L2 and the third lens L3 can be cemented to form a cemented lens. In this embodiment, the mirror surfaces of each lens are spherical.

[0133] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality. For example, the stop STO may be disposed close to the object-side surface S7 of the fourth lens L4.

[0134] Exemplarily, the optical lens may further include a filter L6 with no optical power and a protective glass L7 with no optical power, the filter L6 having an object side surface S11 and an image side surface S12, and the protective glass L7 having an object side surface S13 and an image side surface S14. The filter L6 may be used to correct color deviation. The protective glass L7 may be used to protect the image sensor chip IMA located at the imaging surface S15. The light from the object sequentially passes through each surface S1 to S14 and is finally imaged on the imaging surface S15.

[0135] Table 3 shows the central curvature radius R, thickness T, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 3.

[0136]

[0137] Table 3

[0138] Example 4

[0139] The following reference Figure 4 An optical lens according to Example 4 of the present application is described. Figure 4 A schematic structural diagram of an optical lens according to Example 4 of the present application is shown.

[0140] like Figure 4 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the object side to the image side along the optical axis.

[0141] The first lens L1 is a meniscus lens with negative focal power, whose object side surface S1 is convex and whose image side surface S2 is concave. The second lens L2 is a biconvex lens with positive focal power, whose object side surface S3 is convex and whose image side surface S4 is convex. The third lens L3 is a biconcave lens with negative focal power, whose object side surface S4 is concave and whose image side surface S5 is concave. The fourth lens L4 is a meniscus lens with positive focal power, whose object side surface S7 is concave and whose image side surface S8 is convex. The fifth lens L5 is a biconvex lens with positive focal power, whose object side surface S9 is convex and whose image side surface S10 is convex. The second lens L2 and the third lens L3 can be cemented to form a cemented lens. In this embodiment, the mirror surfaces of each lens are spherical.

[0142] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality. For example, the stop STO may be disposed close to the object-side surface S7 of the fourth lens L4.

[0143] Exemplarily, the optical lens may further include a filter L6 with no optical power and a protective glass L7 with no optical power, the filter L6 having an object side surface S11 and an image side surface S12, and the protective glass L7 having an object side surface S13 and an image side surface S14. The filter L6 may be used to correct color deviation. The protective glass L7 may be used to protect the image sensor chip IMA located at the imaging surface S15. The light from the object sequentially passes through each surface S1 to S14 and is finally imaged on the imaging surface S15.

[0144] Table 4 shows the central curvature radius R, thickness T, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 4.

[0145]

[0146] Table 4

[0147] Example 5

[0148] The following reference Figure 5 An optical lens according to Example 5 of the present application is described. Figure 5 A schematic structural diagram of an optical lens according to Example 5 of the present application is shown.

[0149] like Figure 5 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the object side to the image side along the optical axis.

[0150] The first lens L1 is a meniscus lens with positive focal power, whose object side surface S1 is convex and whose image side surface S2 is concave. The second lens L2 is a biconcave lens with negative focal power, whose object side surface S3 is concave and whose image side surface S4 is concave. The third lens L3 is a biconvex lens with positive focal power, whose object side surface S4 is convex and whose image side surface S5 is convex. The fourth lens L4 is a meniscus lens with positive focal power, whose object side surface S7 is convex and whose image side surface S8 is concave. The fifth lens L5 is a meniscus lens with negative focal power, whose object side surface S9 is convex and whose image side surface S10 is concave. The second lens L2 and the third lens L3 can be cemented to form a cemented lens. In this embodiment, the mirror surfaces of each lens are spherical.

[0151] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality. For example, the stop STO may be disposed close to the object-side surface S7 of the fourth lens L4.

[0152] Exemplarily, the optical lens may further include a filter L6 with no optical power and a protective glass L7 with no optical power, the filter L6 having an object side surface S11 and an image side surface S12, and the protective glass L7 having an object side surface S13 and an image side surface S14. The filter L6 may be used to correct color deviation. The protective glass L7 may be used to protect the image sensor chip IMA located at the imaging surface S15. The light from the object sequentially passes through each surface S1 to S14 and is finally imaged on the imaging surface S15.

[0153] Table 5 shows the central curvature radius R, thickness T, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 5.

[0154]

[0155] Table 5

[0156] Example 6

[0157] The following reference Figure 6 An optical lens according to Example 6 of the present application is described. Figure 6 A schematic structural diagram of an optical lens according to Example 6 of the present application is shown.

[0158] like Figure 6 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the object side to the image side along the optical axis.

[0159] The first lens L1 is a meniscus lens with positive focal power, whose object side surface S1 is convex and whose image side surface S2 is concave. The second lens L2 is a biconcave lens with negative focal power, whose object side surface S3 is concave and whose image side surface S4 is concave. The third lens L3 is a biconvex lens with positive focal power, whose object side surface S4 is convex and whose image side surface S5 is convex. The fourth lens L4 is a meniscus lens with positive focal power, whose object side surface S7 is convex and whose image side surface S8 is concave. The fifth lens L5 is a meniscus lens with negative focal power, whose object side surface S9 is convex and whose image side surface S10 is concave. The second lens L2 and the third lens L3 can be cemented to form a cemented lens. In this embodiment, the mirror surfaces of each lens are spherical.

[0160] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality. For example, the stop STO may be disposed close to the object-side surface S7 of the fourth lens L4.

[0161] Exemplarily, the optical lens may further include a filter L6 with no optical power and a protective glass L7 with no optical power, the filter L6 having an object side surface S11 and an image side surface S12, and the protective glass L7 having an object side surface S13 and an image side surface S14. The filter L6 may be used to correct color deviation. The protective glass L7 may be used to protect the image sensor chip IMA located at the imaging surface S15. The light from the object sequentially passes through each surface S1 to S14 and is finally imaged on the imaging surface S15.

[0162] Table 6 shows the central curvature radius R, thickness T, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 6.

[0163]

[0164]

[0165] Table 6

[0166] Example 7

[0167] The following reference Figure 7 An optical lens according to Example 7 of the present application is described. Figure 7 A schematic structural diagram of an optical lens according to Example 7 of the present application is shown.

[0168] like Figure 7As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the object side to the image side along the optical axis.

[0169] The first lens L1 is a meniscus lens with positive focal power, whose object side surface S1 is convex and whose image side surface S2 is concave. The second lens L2 is a biconcave lens with negative focal power, whose object side surface S3 is concave and whose image side surface S4 is concave. The third lens L3 is a biconvex lens with positive focal power, whose object side surface S4 is convex and whose image side surface S5 is convex. The fourth lens L4 is a biconvex lens with positive focal power, whose object side surface S7 is convex and whose image side surface S8 is convex. The fifth lens L5 is a meniscus lens with negative focal power, whose object side surface S9 is convex and whose image side surface S10 is concave. The second lens L2 and the third lens L3 can be cemented to form a cemented lens. In this embodiment, the mirror surfaces of each lens are spherical.

[0170] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality. For example, the stop STO may be disposed close to the object-side surface S7 of the fourth lens L4.

[0171] Exemplarily, the optical lens may further include a filter L6 with no optical power and a protective glass L7 with no optical power, the filter L6 having an object side surface S11 and an image side surface S12, and the protective glass L7 having an object side surface S13 and an image side surface S14. The filter L6 may be used to correct color deviation. The protective glass L7 may be used to protect the image sensor chip IMA located at the imaging surface S15. The light from the object sequentially passes through each surface S1 to S14 and is finally imaged on the imaging surface S15.

[0172] Table 7 shows the central curvature radius R, thickness T, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 7.

[0173]

[0174]

[0175] Table 7

[0176] Example 8

[0177] The following reference Figure 8 An optical lens according to Example 8 of the present application is described. Figure 8 A schematic structural diagram of an optical lens according to Example 8 of the present application is shown.

[0178] like Figure 8As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the object side to the image side along the optical axis.

[0179] The first lens L1 is a meniscus lens with positive focal power, whose object side surface S1 is convex and whose image side surface S2 is concave. The second lens L2 is a biconcave lens with negative focal power, whose object side surface S3 is concave and whose image side surface S4 is concave. The third lens L3 is a biconvex lens with positive focal power, whose object side surface S4 is convex and whose image side surface S5 is convex. The fourth lens L4 is a biconvex lens with positive focal power, whose object side surface S7 is convex and whose image side surface S8 is convex. The fifth lens L5 is a meniscus lens with negative focal power, whose object side surface S9 is convex and whose image side surface S10 is concave. The second lens L2 and the third lens L3 can be cemented to form a cemented lens. In this embodiment, the mirror surfaces of each lens are spherical.

[0180] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality. For example, the stop STO may be disposed close to the object-side surface S7 of the fourth lens L4.

[0181] Exemplarily, the optical lens may further include a filter L6 with no optical power and a protective glass L7 with no optical power, the filter L6 having an object side surface S11 and an image side surface S12, and the protective glass L7 having an object side surface S13 and an image side surface S14. The filter L6 may be used to correct color deviation. The protective glass L7 may be used to protect the image sensor chip IMA located at the imaging surface S15. The light from the object sequentially passes through each surface S1 to S14 and is finally imaged on the imaging surface S15.

[0182] Table 8 shows the central curvature radius R, thickness T, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 8.

[0183]

[0184]

[0185] Table 8

[0186] In summary, Examples 1 to 8 respectively satisfy the relationships shown in Table 9-1 and Table 9-2 below. In Table 9-1 and Table 9-2, the units of TTL, F, H, D, BFL, TL, R1, R2, T12, d1, F1, F2, F3, F4, F5, F23 are millimeters (mm), and the unit of FOV is degrees (°).

[0187]

[0188]

[0189] Table 9-1

[0190]

[0191]

[0192] Table 9-2

[0193] 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. Exemplarily, the electronic device includes an imaging element disposed on an imaging surface of the optical lens. Optionally, the imaging element disposed on the imaging surface may be a photosensitive coupled device (CCD) or a complementary metal oxide semiconductor device (CMOS).

[0194] The electronic device may be an independent electronic device such as a detection distance camera, or an imaging module integrated in a detection distance device. In addition, the electronic device may be an independent imaging device such as a vehicle-mounted camera, or an imaging module integrated in an auxiliary driving system.

[0195] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. An optical lens, characterized in that: Along the optical axis from the object side to the image side, they include: A first lens having optical power, wherein the object side surface is convex and the image side surface is concave; a second lens having optical power; a third lens having optical power; a fourth lens having positive refractive power; and a fifth lens having optical power and having a convex object-side surface; The second lens and the third lens are cemented to form a cemented lens, the positive and negative properties of the optical power signs of the second lens and the third lens are opposite, the positive and negative properties of the optical power signs of the first lens and the fifth lens are opposite, and the positive and negative properties of the optical power signs of the first lens and the second lens are opposite; The number of lenses with optical power of the optical lens is five; The distance TTL from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis, the maximum field of view FOV of the optical lens, and the image height H corresponding to the maximum field of view FOV of the optical lens satisfy: 5.094≤(TTL×180°) / (H×FOV)≤10.

8.

2. The optical lens according to claim 1, characterized in that: The first lens has negative optical power.

3. The optical lens according to claim 1, characterized in that: The first lens has positive optical power.

4. The optical lens according to claim 1, characterized in that: The second lens has positive refractive power, and its object side surface is convex, and its image side surface is convex; The third lens has negative optical power, and its object side surface is concave, and its image side surface is concave.

5. The optical lens according to claim 1, characterized in that: The second lens has negative optical power, and its object side surface is concave, and its image side surface is concave; The third lens has positive refractive power, and its object side surface is convex, and its image side surface is convex.

6. The optical lens according to claim 1, characterized in that: The object side surface of the fourth lens is concave, and the image side surface is convex.

7. The optical lens according to claim 1, characterized in that: The object side surface of the fourth lens is convex, and the image side surface is concave.

8. The optical lens according to claim 1, characterized in that: The object side surface of the fourth lens is convex, and the image side surface is convex.

9. The optical lens according to claim 1, characterized in that: The fifth lens has positive refractive power, and the image side surface of the fifth lens is a concave surface.

10. The optical lens according to claim 1, characterized in that: The fifth lens has positive refractive power, and the image side surface of the fifth lens is a convex surface.

11. The optical lens according to claim 1, characterized in that: The fifth lens has negative optical power, and the image side surface of the fifth lens is a concave surface.

12. The optical lens according to any one of claims 1 to 11, characterized in that: A distance TTL from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis and a total effective focal length F of the optical lens satisfy: TTL / F≤3.

13. The optical lens according to any one of claims 1 to 11, characterized in that: A distance BFL from the image side surface of the fifth lens to the imaging surface of the optical lens on the optical axis and a distance TL from the object side surface of the first lens to the image side surface of the fifth lens on the optical axis satisfy: BFL / TL≥0.

2.

14. The optical lens according to any one of claims 1 to 11, characterized in that: The maximum field of view FOV of the optical lens, the maximum light clearance aperture D of the object side of the first lens corresponding to the maximum field of view FOV of the optical lens, and the image height H corresponding to the maximum field of view FOV of the optical lens satisfy: (D×180°) / (H×FOV)≤4.

5.

15. The optical lens according to any one of claims 1 to 11, characterized in that: The effective focal length F23 of the cemented lens formed by cementing the second lens and the third lens and the total effective focal length F of the optical lens satisfy the following: |F23 / F|≤20.

16. The optical lens according to any one of claims 1 to 11, characterized in that: The effective focal length F2 of the second lens and the effective focal length F3 of the third lens satisfy: 0.1≤|F2 / F3|≤1.

17. The optical lens according to any one of claims 1 to 11, characterized in that: The maximum field of view FOV of the optical lens, the total effective focal length F of the optical lens, and the image height H corresponding to the maximum field of view FOV of the optical lens satisfy: (FOV×F) / H≥30°.

18. The optical lens according to any one of claims 1 to 11, characterized in that: A central curvature radius R1 of the object-side surface of the first lens, a central curvature radius R2 of the image-side surface of the first lens, and a central thickness d1 of the first lens satisfy: 0.3≤R1 / (R2+d1)≤1.

7.

19. The optical lens according to any one of claims 1 to 11, characterized in that: A central curvature radius R1 of the object-side surface of the first lens and a central curvature radius R2 of the image-side surface of the first lens satisfy: 0.4≤R1 / R2≤3.

20. The optical lens according to any one of claims 1 to 11, characterized in that: A distance T12 between the first lens and the second lens on the optical axis and a distance TTL from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis satisfy: T12 / TTL≤0.

12.

21. The optical lens according to any one of claims 2 to 11, characterized in that: A curvature radius R5 of the image side surface of the third lens and a curvature radius R7 of the object side surface of the fourth lens satisfy: 2≤|(R5-R7) / (R5+R7)|≤80.

22. The optical lens according to any one of claims 1 to 11, characterized in that: A center thickness d1 of the first lens on the optical axis and a spacing distance T12 between the first lens and the second lens on the optical axis satisfy: T12 / d1≤2.

23. The optical lens according to any one of claims 1 to 11, characterized in that: The optical lens satisfies at least one of the following conditions: 5.094≤(TTL×180°) / (H×FOV)≤9,2.0729≤TTL / F≤2.5,0.2≤BFL / TL≤0.6491,0.3≤BFL / TL≤0.6491,1.998≤(D×180°) / (H×FOV)≤3.6,0.9714≤∣F23 / F∣≤15,0.5 ≤|F2 / F3|≤1, 35°≤(FOV×F) / H≤57.0359°, 0.4≤R1 / (R2+d1)≤1.5, 0.45≤R1 / R2≤ 2, 0.0488≤T12 / TTL≤0.09, 2.5≤|(R5-R7) / (R5+R7)|≤75, 0.6250≤T12 / d1≤1.4, Wherein, TTL is the distance from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis, FOV is the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, F is the total effective focal length of the optical lens, BFL is the distance from the image side surface of the fifth lens to the imaging surface of the optical lens on the optical axis, TL is the distance from the object side surface of the first lens to the image side surface of the fifth lens on the optical axis, D is the maximum clear aperture of the object side surface of the first lens corresponding to the maximum field of view of the optical lens, F23 is the effective focal length of the cemented lens formed by cementing the second lens and the third lens, F2 is the effective focal length of the second lens, F3 is the effective focal length of the third lens, R1 is the central curvature radius of the object side surface of the first lens, R2 is the central curvature radius of the image side surface of the first lens, d1 is the central thickness of the first lens, T12 is the spacing distance between the first lens and the second lens on the optical axis, R5 is the curvature radius of the image side surface of the third lens, and R7 is the curvature radius of the object side surface of the fourth lens.

24. The optical lens according to any one of claims 1 to 11, characterized in that: The optical lens satisfies at least one of the following conditions: 5.094≤(TTL×180°) / (H×FOV)≤7.29, 2.0729≤TTL / F≤2.1302, 0.3259≤BFL / TL≤0.6491, 1. 998≤(D×180°) / (H×FOV)≤2.7, 0.9714≤∣F23 / F∣≤13.9764, 0.6585≤|F2 / F3|≤0.9125, 38. 7603°≤(FOV×F) / H≤57.0359°, 0.4523≤R1 / (R2+d1)≤1.4904, 0.4998≤R1 / R2≤1.9778, 0.0 488≤T12 / TTL≤0.0766, 2.7256≤|(R5-R7) / (R5+R7)|≤67.3631, 0.6250≤T12 / d1≤1.2832, Wherein, TTL is the distance from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis, FOV is the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, F is the total effective focal length of the optical lens, BFL is the distance from the image side surface of the fifth lens to the imaging surface of the optical lens on the optical axis, TL is the distance from the object side surface of the first lens to the image side surface of the fifth lens on the optical axis, D is the maximum clear aperture of the object side surface of the first lens corresponding to the maximum field of view of the optical lens, F23 is the effective focal length of the cemented lens formed by cementing the second lens and the third lens, F2 is the effective focal length of the second lens, F3 is the effective focal length of the third lens, R1 is the central curvature radius of the object side surface of the first lens, R2 is the central curvature radius of the image side surface of the first lens, d1 is the central thickness of the first lens, T12 is the spacing distance between the first lens and the second lens on the optical axis, R5 is the curvature radius of the image side surface of the third lens, and R7 is the curvature radius of the object side surface of the fourth lens.

25. An optical lens, characterized in that: Along the optical axis from the object side to the image side, they include: A first lens having optical power, wherein the object side surface is convex and the image side surface is concave; a second lens having optical power; a third lens having optical power; a fourth lens having positive refractive power; and a fifth lens having optical power; The second lens and the third lens are cemented to form a cemented lens, the positive and negative properties of the optical power signs of the second lens and the third lens are opposite, the positive and negative properties of the optical power signs of the first lens and the fifth lens are opposite, and the positive and negative properties of the optical power signs of the first lens and the second lens are opposite; The optical lens has five lenses with optical power; The curvature radius R5 of the image side surface of the third lens and the curvature radius R7 of the object side surface of the fourth lens satisfy: 2≤|(R5-R7) / (R5+R7)|≤80; The distance TTL from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis, the maximum field of view FOV of the optical lens, and the image height H corresponding to the maximum field of view FOV of the optical lens satisfy: 5.094≤(TTL×180°) / (H×FOV)≤10.

8.

26. The optical lens according to claim 25, characterized in that: The object side surface of the fifth lens is a convex surface.

27. The optical lens according to claim 25, characterized in that: The first lens has negative optical power.

28. The optical lens according to claim 25, characterized in that: The first lens has positive optical power.

29. The optical lens according to claim 25, characterized in that: The second lens has positive refractive power, and its object side surface is convex, and its image side surface is convex; The third lens has negative optical power, and its object side surface is concave, and its image side surface is concave.

30. The optical lens according to claim 25, characterized in that: The second lens has negative optical power, and its object side surface is concave, and its image side surface is concave; The third lens has positive refractive power, and its object side surface is convex, and its image side surface is convex.

31. The optical lens according to claim 25, characterized in that: The object side surface of the fourth lens is concave, and the image side surface is convex.

32. The optical lens according to claim 25, characterized in that: The object side surface of the fourth lens is convex, and the image side surface is concave.

33. The optical lens according to claim 25, characterized in that: The object side surface of the fourth lens is convex, and the image side surface is convex.

34. The optical lens according to claim 25, characterized in that: The fifth lens has positive refractive power, and the image side surface of the fifth lens is a concave surface.

35. The optical lens according to claim 25, characterized in that: The fifth lens has positive refractive power, and the image side surface of the fifth lens is a convex surface.

36. The optical lens according to claim 25, characterized in that: The fifth lens has negative optical power, and the image side surface of the fifth lens is a concave surface.

37. The optical lens according to any one of claims 25 to 36, characterized in that: A distance TTL from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis and a total effective focal length F of the optical lens satisfy: TTL / F≤3.

38. The optical lens according to any one of claims 25 to 36, characterized in that: A distance BFL from the image side surface of the fifth lens to the imaging surface of the optical lens on the optical axis and a distance TL from the object side surface of the first lens to the image side surface of the fifth lens on the optical axis satisfy: BFL / TL≥0.

2.

39. The optical lens according to any one of claims 25 to 36, characterized in that: The maximum field of view FOV of the optical lens, the maximum light clearance aperture D of the object side of the first lens corresponding to the maximum field of view FOV of the optical lens, and the image height H corresponding to the maximum field of view FOV of the optical lens satisfy: (D×180°) / (H×FOV)≤4.

5.

40. The optical lens according to any one of claims 25-36, characterized in that: The effective focal length F23 of the cemented lens formed by cementing the second lens and the third lens and the total effective focal length F of the optical lens satisfy the following: |F23 / F|≤20.

41. The optical lens according to any one of claims 25-36, characterized in that: The effective focal length F2 of the second lens and the effective focal length F3 of the third lens satisfy: 0.1≤|F2 / F3|≤1.

42. The optical lens according to any one of claims 25-36, characterized in that: The maximum field of view FOV of the optical lens, the total effective focal length F of the optical lens, and the image height H corresponding to the maximum field of view FOV of the optical lens satisfy: (FOV×F) / H≥30°.

43. The optical lens according to any one of claims 25-36, characterized in that: A central curvature radius R1 of the object-side surface of the first lens, a central curvature radius R2 of the image-side surface of the first lens, and a central thickness d1 of the first lens satisfy: 0.3≤R1 / (R2+d1)≤1.

7.

44. The optical lens according to any one of claims 25-36, characterized in that: A central curvature radius R1 of the object-side surface of the first lens and a central curvature radius R2 of the image-side surface of the first lens satisfy: 0.4≤R1 / R2≤3.

45. The optical lens according to any one of claims 25-36, characterized in that: A distance T12 between the first lens and the second lens on the optical axis and a distance TTL from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis satisfy: T12 / TTL≤0.

12.

46. ​​The optical lens according to any one of claims 25-36, characterized in that: A center thickness d1 of the first lens on the optical axis and a spacing distance T12 between the first lens and the second lens on the optical axis satisfy: T12 / d1≤2.

47. The optical lens according to any one of claims 25-36, characterized in that: The optical lens satisfies at least one of the following conditions: 5.094≤(TTL×180°) / (H×FOV)≤9,2.0729≤TTL / F≤2.5,0.2≤BFL / TL≤0.6491,0.3≤BFL / TL≤0.6491,1.998≤(D×180°) / (H×FOV)≤3.6,0.9714≤∣F23 / F∣≤15,0.5 ≤|F2 / F3|≤1, 35°≤(FOV×F) / H≤57.0359°, 0.4≤R1 / (R2+d1)≤1.5, 0.45≤R1 / R2≤ 2, 0.0488≤T12 / TTL≤0.09, 2.5≤|(R5-R7) / (R5+R7)|≤75, 0.6250≤T12 / d1≤1.4, Wherein, TTL is the distance from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis, FOV is the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, F is the total effective focal length of the optical lens, BFL is the distance from the image side surface of the fifth lens to the imaging surface of the optical lens on the optical axis, TL is the distance from the object side surface of the first lens to the image side surface of the fifth lens on the optical axis, D is the maximum clear aperture of the object side surface of the first lens corresponding to the maximum field of view of the optical lens, F23 is the effective focal length of the cemented lens formed by cementing the second lens and the third lens, F2 is the effective focal length of the second lens, F3 is the effective focal length of the third lens, R1 is the central curvature radius of the object side surface of the first lens, R2 is the central curvature radius of the image side surface of the first lens, d1 is the central thickness of the first lens, T12 is the spacing distance between the first lens and the second lens on the optical axis, R5 is the curvature radius of the image side surface of the third lens, and R7 is the curvature radius of the object side surface of the fourth lens.

48. The optical lens according to any one of claims 25-36, characterized in that: The optical lens satisfies at least one of the following conditions: 5.094≤(TTL×180°) / (H×FOV)≤7.29, 2.0729≤TTL / F≤2.1302, 1.998≤(D×180°) / (H×FOV)≤2.7, 0.9714≤∣F23 / F∣≤13.9764, 0.6585≤|F2 / F3|≤ 0.9125, 38.7603°≤(FOV×F) / H≤57.0359°, 0.4523≤R1 / (R2+d1)≤1.4904, 0.4998≤R1 / R2≤1.9778, T12 / TTL≤0.0766, 0.6250≤T12 / d1≤1.2832, Among them, TTL is the distance from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis, FOV is the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, F is the total effective focal length of the optical lens, D is the maximum clear aperture of the object side surface of the first lens corresponding to the maximum field of view of the optical lens, F23 is the effective focal length of the cemented lens formed by the second lens and the third lens being cemented, F2 is the effective focal length of the second lens, F3 is the effective focal length of the third lens, R1 is the central curvature radius of the object side surface of the first lens, R2 is the central curvature radius of the image side surface of the first lens, d1 is the central thickness of the first lens, and T12 is the spacing distance between the first lens and the second lens on the optical axis.

49. An electronic device, characterized in that: It comprises the optical lens according to claim 1 or 25 and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

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