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 negative optical power; a second lens with positive optical power; a third lens with optical power; a fourth lens with optical power; and a fifth lens with positive optical power. The third lens and the fourth lens are cemented 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] In recent years, with the rapid development of automobile assisted driving systems, optical lenses are increasingly used in automobiles, and users have higher and higher requirements for the pixel quality of vehicle-mounted lenses. At the same time, based on safety considerations, the market also has very high performance requirements for vehicle-mounted lenses, and of course, the requirements for the performance of vehicle-mounted lenses used in autonomous driving are even more stringent.

[0003] Autonomous driving vehicle lenses require extremely high pixel quality. Generally speaking, in order to improve the resolution of the optical lens for autonomous driving, six or more lens structures are usually selected based on the original vehicle lenses, but this will seriously affect the miniaturization of the lens. In particular, this type of optical lens has high requirements for stability and needs to have a small change in image height in high and low temperature environments to avoid lens performance degradation due to temperature differences. Summary of the invention

[0004] 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 negative optical power; a second lens with positive optical power; a third lens with optical power; a fourth lens with optical power; and a fifth lens with positive optical power. The third lens and the fourth lens are cemented to form a cemented lens.

[0005] In one embodiment, the object-side surface of the first lens may be convex, and the image-side surface may be concave; and the object-side surface of the second lens may be convex, and the image-side surface may be concave.

[0006] In one embodiment, the object-side surface of the first lens may be a concave surface, and the image-side surface may be a concave surface; and the object-side surface of the second lens may be a convex surface, and the image-side surface may be a convex surface.

[0007] In one embodiment, the third lens may have negative optical power, its object side surface may be concave, and its image side surface may be concave; and the fourth lens may have positive optical power, its object side surface may be convex, and its image side surface may be convex.

[0008] In one embodiment, the third lens may have positive optical power, its object side surface may be convex, and its image side surface may be convex; and the fourth lens may have negative optical power, its object side surface may be concave, and its image side surface may be convex.

[0009] In one embodiment, the object-side surface of the fifth lens element may be a convex surface, and the image-side surface may be a concave surface.

[0010] In one embodiment, the object-side surface of the fifth lens element may be a convex surface, and the image-side surface may be a convex surface.

[0011] In one embodiment, the fifth lens may have an aspherical mirror surface.

[0012] 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≤7.

[0013] 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 image height H corresponding to the maximum field of view FOV of the optical lens, and the maximum field of view FOV of the optical lens may satisfy: TTL / H / FOV≤0.1.

[0014] In one embodiment, the maximum light clearance diameter D of the object side of the first lens corresponding to the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view FOV of the optical lens, and the maximum field of view FOV of the optical lens may satisfy: D / H / FOV≤0.05.

[0015] In one embodiment, a curvature radius R11 of the object-side surface of the first lens and a curvature radius R12 of the image-side surface of the first lens may satisfy: |R11 / R12|≥1.

[0016] In one embodiment, a curvature radius R21 of the object-side surface of the second lens and a curvature radius R22 of the image-side surface of the second lens may satisfy: |R21 / R22|≥0.1.

[0017] In one embodiment, a curvature radius R42 of the image-side surface of the fourth lens and a curvature radius R51 of the object-side surface of the fifth lens may satisfy: |R42 / R51|≥0.1.

[0018] In one embodiment, the center thickness d1 of the first lens 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: d1 / TTL≤0.15.

[0019] In one embodiment, the central thickness d5 of the fifth lens 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: d5 / TTL≤0.3.

[0020] In one embodiment, the effective focal length F34 of the cemented lens formed by cementing the third lens and the fourth lens and the total effective focal length F of the optical lens may satisfy the following: 0.1≤|F34 / F|≤25.

[0021] 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≥40.

[0022] In one embodiment, the distance d45 between the fourth lens and the fifth lens on the optical axis and the total effective focal length F of the optical lens may satisfy: d45 / F≤0.1.

[0023] In one embodiment, a distance BFL between the image side surface of the fifth lens and the imaging surface of the optical lens on the optical axis and a distance TTL between the object side surface of the first lens and the imaging surface of the optical lens on the optical axis may satisfy: BFL / TTL≥0.08.

[0024] 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 negative optical power; a second lens with positive optical power; a third lens with optical power; a fourth lens with optical power; and a fifth lens with positive optical power. 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 can satisfy: (FOV×F) / H≥40.

[0025] On the other hand, the present application provides an electronic device, characterized in that it includes an 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.

[0026] 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 miniaturization, low cost, good temperature performance, and good imaging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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:

[0028] Figure 1 A schematic diagram showing the structure of an optical lens according to Embodiment 1 of the present application;

[0029] Figure 2 A schematic diagram showing the structure of an optical lens according to Embodiment 2 of the present application;

[0030] Figure 3 A schematic diagram showing the structure of an optical lens according to Embodiment 3 of the present application;

[0031] Figure 4 A schematic diagram showing the structure of an optical lens according to Embodiment 4 of the present application;

[0032] Figure 5 A schematic diagram showing the structure of an optical lens according to Embodiment 5 of the present application;

[0033] Figure 6 A schematic diagram showing the structure of an optical lens according to Embodiment 6 of the present application;

[0034] Figure 7 A schematic diagram showing the structure of an optical lens according to Embodiment 7 of the present application; and

[0035] Figure 8 A schematic diagram showing the structure of an optical lens according to Example 8 of the present application. DETAILED DESCRIPTION

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] The features, principles and other aspects of the present application are described in detail below.

[0044] 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.

[0045] In an exemplary embodiment, the optical lens may further include a photosensitive element disposed on the imaging surface. Optionally, the photosensitive element disposed on the imaging surface may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS).

[0046] In an exemplary embodiment, the first lens may have a negative optical power, and the first lens may have a convex-concave surface or a biconcave surface. For another example, in the application scenario of a vehicle-mounted lens, considering that the vehicle-mounted lens is installed and used outdoors, it may be in bad weather such as rain and snow. The optical power and surface shape of the first lens are conducive to the sliding of water droplets and reduce the impact on imaging. Preferably, the first lens may have an aspherical lens to further improve the resolution quality.

[0047] In an exemplary embodiment, the second lens may have positive optical power, and the second lens may have a convex-concave surface or a biconvex surface. Such an optical power and surface configuration of the second lens can smoothly transition the incident light to the rear optical system, which is conducive to reducing the lens aperture and increasing the aperture of the aperture, increasing the light throughput of the system, and achieving higher picture brightness. Preferably, the second lens may be a glass lens, which is conducive to reducing the sensitivity of the lens.

[0048] In an exemplary embodiment, the fifth lens may have positive optical power, and the fifth lens may have a convex-concave surface or a biconvex surface. Such optical power and surface configuration of the fifth lens can converge the light passing through the front of the optical system. Preferably, the fifth lens may also have an aspherical lens, which is conducive to fully correcting various aberrations of the optical system and improving the resolution of the optical system under the premise of compact structure.

[0049] In an exemplary embodiment, the fifth lens may have an aspherical mirror surface, which is beneficial for improving resolution.

[0050] In an exemplary embodiment, the optical lens may further include an aperture, which may be disposed between the second lens and the third lens. Disposing the aperture between the second lens and the third lens is conducive to effectively restricting the light entering the optical system and reducing the lens diameter of the optical system. Of course, the aperture may also be disposed at other positions as required.

[0051] In an exemplary embodiment, the optical lens according to the present application may satisfy: TTL / F≤7, 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≤5. Satisfying TTL / F≤7 is conducive to miniaturization.

[0052] In an exemplary embodiment, the optical lens according to the present application may satisfy: TTL / H / FOV≤0.1, 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, H is the image height corresponding to the maximum field of view FOV of the optical lens, and FOV is the maximum field of view of the optical lens. More specifically, TTL, H and FOV may further satisfy: TTL / H / FOV≤0.07. Satisfying TTL / H / FOV≤0.1 is conducive to miniaturization, and the size of the optical lens can be made smaller under the same imaging surface and the same image height.

[0053] In an exemplary embodiment, the optical lens according to the present application may satisfy: D / H / FOV≤0.05, wherein D is the maximum light passing diameter of the object side of the first lens corresponding to the maximum field of view FOV of the optical lens, H is the image height corresponding to the maximum field of view FOV 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: D / H / FOV≤0.03. Satisfying D / H / FOV≤0.05 is conducive to satisfying a smaller front port diameter and is conducive to miniaturization.

[0054] In an exemplary embodiment, the optical lens according to the present application may satisfy: |R11 / R12|≥1, wherein R11 is the radius of curvature of the object side surface of the first lens, and R12 is the radius of curvature of the image side surface of the first lens. More specifically, R11 and R12 may further satisfy: |R11 / R12|≥1.5. When |R11 / R12|≥1 is satisfied, system aberrations can be effectively corrected.

[0055] In an exemplary embodiment, the optical lens according to the present application may satisfy: |R21 / R22|≥0.1, wherein R21 is the radius of curvature of the object side surface of the second lens, and R22 is the radius of curvature of the image side surface of the second lens. More specifically, R21 and R22 may further satisfy: |R21 / R22|≥0.3. Satisfying |R21 / R22|≥0.1 can effectively correct system aberrations.

[0056] In an exemplary embodiment, the optical lens according to the present application may satisfy: |R42 / R51|≥0.1, wherein R42 is the radius of curvature of the image side surface of the fourth lens, and R51 is the radius of curvature of the object side surface of the fifth lens. More specifically, R42 and R51 may further satisfy: |R42 / R51|≥0.5. Satisfying |R42 / R51|≥0.1 can correct the aberration of the optical system, and can ensure that when the light emitted from the fourth lens is incident on the object side surface of the fifth lens, the incident light is relatively gentle, thereby reducing the tolerance sensitivity of the optical system.

[0057] In an exemplary embodiment, the optical lens according to the present application may satisfy: d1 / TTL≤0.15, where d1 is the center thickness of the first lens, and 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, d1 and TTL may further satisfy: d1 / TTL≤0.07. When d1 / TTL≤0.15 is satisfied, the center thickness of the first lens can be reasonably allocated, which helps to improve the system illumination.

[0058] In an exemplary embodiment, the optical lens according to the present application may satisfy: d5 / TTL≤0.3, where d5 is the center thickness of the fifth lens, and 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, d5 and TTL may further satisfy: d5 / TTL≤0.18. When d5 / TTL≤0.3 is satisfied, the center thickness of the fifth lens can be reasonably allocated, which helps to improve the system illumination.

[0059] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.1≤|F34 / F|≤25, wherein F34 is the effective focal length of the cemented lens formed by cementing the third lens and the fourth lens, and F is the total effective focal length of the optical lens. More specifically, F34 and F may further satisfy: 0.5≤|F34 / F|≤18. Satisfying 0.1≤|F34 / F|≤25 can reasonably allocate the effective focal length of the cemented lens, which is helpful for achieving thermal compensation.

[0060] In an exemplary embodiment, the optical lens according to the present application may satisfy: (FOV×F) / H≥40, 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≥50. Satisfying (FOV×F) / H≥40 can achieve wide angle, high resolution, telephoto and other characteristics.

[0061] In an exemplary embodiment, the optical lens according to the present application may satisfy: d45 / F≤0.1, wherein d45 is the distance between the fourth lens and the fifth lens on the optical axis, and F is the total effective focal length of the optical lens. More specifically, d45 and F may further satisfy: d45 / F≤0.02. Satisfying d45 / F≤0.1 is conducive to a smooth transition of light.

[0062] In an exemplary embodiment, the optical lens according to the present application may satisfy: BFL / TTL≥0.08, wherein BFL is the distance between the image side of the fifth lens and the imaging surface of the optical 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, BFL and TTL may further satisfy: BFL / TTL≥0.10. Satisfying BFL / TTL≥0.08 can realize the characteristics of the back focal length of the optical lens, and can also reserve sufficient space for the optical elements during installation or focusing to avoid mutual interference between mechanisms.

[0063] In an exemplary embodiment, the optical lens according to the present application may satisfy: F / ENPD≤2.2, where F is the total effective focal length of the optical lens and ENPD is the effective aperture of the optical lens. More specifically, F and ENPD may further satisfy: F / ENPD≤2.0. Satisfying F / ENPD≤2.2 may enable the optical lens to have a large aperture characteristic, and may enable the optical lens to collect more incident light.

[0064] In an exemplary embodiment, an aperture for limiting the light beam may be provided between the second lens and the third lens to further improve the imaging quality of the optical lens. The aperture is conducive to reducing the aperture and shrinking the light. In an embodiment of the present application, the aperture may be provided near the image side surface of the second lens, or near the object side surface of the third lens. However, it should be noted that the position of the aperture disclosed herein is only an example and not a limitation; in an alternative embodiment, the aperture may also be provided at other positions according to actual needs.

[0065] 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.

[0066] As known to those skilled in the art, cemented lenses can be used to minimize or eliminate chromatic aberration. Using cemented lenses in optical lenses can improve image quality and reduce reflection loss of light energy, thereby achieving high resolution and improving the clarity of lens imaging. In addition, the use of cemented lenses can also simplify the assembly process during the lens manufacturing process.

[0067] In an exemplary embodiment, the third lens and the fourth lens are glued to form a glued lens. The third lens with negative optical power, and both the object side and the image side are concave, is glued to the fourth lens with positive optical power, and both the object side and the image side are convex, or the third lens with positive optical power, and both the object side and the image side are convex, is glued to the fourth lens with negative optical power, and the object side is concave and the image side is convex. The glued lens consists of a lens with positive optical power and a lens with negative optical power, wherein the lens with positive optical power has a lower refractive index, and the lens with negative optical power has a higher refractive index than the lens with positive optical power. The lens with a lower refractive index and the lens with a higher refractive index match each other, which is conducive to the rapid transition of the light in front, can increase the aperture, and meet the night vision requirements. The combination of a lens with positive optical power and a lens with negative optical power can eliminate self-chromatic aberration, reduce tolerance sensitivity, and can also leave some chromatic aberration to balance the chromatic aberration of the system. The lens with positive focal power adopts high dispersion material, and the lens with negative focal power adopts low dispersion material, which is conducive to achieving the effect of confocal imaging of visible light and infrared light while correcting the chromatic aberration of the system; the above-mentioned gluing method between the lenses has at least one of the following advantages: reducing the own chromatic aberration, reducing the tolerance sensitivity, and balancing the overall chromatic aberration of the system through the residual partial chromatic aberration; reducing the air gap between the two lenses, thereby reducing the total length of the system; reducing the assembly components between the lenses, thereby reducing the process and reducing the cost; reducing the tolerance sensitivity problems such as tilt / eccentricity caused by the lens unit during the assembly process, and improving the production yield; reducing the light loss caused by reflection between lenses, and improving the illumination; further reducing the field curvature, and effectively correcting the off-axis point aberration of the optical lens. Such a gluing design shares the overall chromatic aberration correction of the system, effectively corrects the aberration to improve the resolution, and makes the optical system compact as a whole to meet the requirements of miniaturization. The above-mentioned glued lens is preferably an aspherical lens to further improve the resolution quality.

[0068] 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 among 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.

[0069] According to the optical lens of the above-mentioned embodiment of the present application, by reasonably setting the shape and focal length of each lens, the optical system can achieve at least one beneficial effect such as telephoto, large aperture, high resolution, and good imaging quality when only 5 lenses are used. Specifically, the optical lens provided by the present application can have more than 8 million pixels. At the same time, the optical system also takes into account the low-cost requirements of small lens size, low sensitivity, and high production yield. The optical lens also has the characteristics of small CRA, which avoids stray light generated by hitting the lens barrel when the rear end of the light is emitted, and can be well matched with the on-board chip without color cast and dark corner phenomenon. At the same time, the optical lens has the advantages of good temperature adaptability, small change in imaging effect under high and low temperature environments, stable image quality, and is conducive to accurate ranging of binocular lenses.

[0070] According to the optical lens of the above embodiment of the present application, through the reasonable combination of lens shapes, optical power, spherical and aspherical surfaces, the optical lens can achieve miniaturization and facilitate assembly while also improving the resolution quality and thermal stability. Using multiple aspherical lenses can effectively correct aberrations and improve the resolution quality, while making the overall optical system compact and meeting the requirements of miniaturization, and can reduce tolerance sensitivity and facilitate assembly.

[0071] 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.

[0072] 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.

[0073] Specific embodiments of the optical lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0074] Example 1

[0075] The following reference Figure 1 The optical lens according to Example 1 of the present application is described. Figure 1A schematic structural diagram of an optical lens according to Example 1 of the present application is shown.

[0076] 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.

[0077] The first lens L1 is a convex-concave 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 convex-concave lens with positive focal power, whose object side surface S3 is convex and whose image side surface S4 is concave. The third lens L3 is a biconcave lens with negative focal power, whose object side surface S5 is concave and whose image side surface S6 is concave. The fourth lens L4 is a biconvex lens with positive focal power, whose object side surface S6 is convex and whose image side surface S7 is convex. The fifth lens L5 is a convex-concave lens with positive focal power, whose object side surface S8 is convex and whose image side surface S9 is concave. The third lens L3 and the fourth lens L4 can be cemented to form a cemented lens.

[0078] The object-side surface S8 and the image-side surface S9 of the fifth lens L5 are aspherical mirror surfaces.

[0079] The optical lens may further include a stop STO, which may be disposed between the second lens L2 and the third lens L3 to improve imaging quality. For example, the stop STO may be disposed close to the object-side surface S5 of the third lens L3.

[0080] Optionally, the optical lens may further include a filter L6 and / or a protective glass L6' having an object side surface S10 and an image side surface S11, wherein the filter L6 may be used to correct color deviation and the protective glass L6' may be used to protect the image sensor chip IMA located at the imaging surface S12. Light from the object sequentially passes through each surface S1 to S11 and is finally imaged on the imaging surface S12.

[0081] Table 1 shows the radius of curvature R, thickness T (it should be understood that the thickness T of the row where S1 is located is the center thickness of the first lens L1, the thickness T of the row where S2 is located is the spacing distance 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.

[0082]

[0083] Table 1

[0084] In Embodiment 1, both the object-side surface S8 and the image-side surface S9 of the fifth lens L5 may be aspherical surfaces, and the surface shape x of each aspherical lens may be defined by, but not limited to, the following aspherical surface formula:

[0085]

[0086] Wherein, 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 S8 and S9 in Example 1.

[0087] Face number k A4 A6 A8 A10 A12 S8 9.8710E-02 -5.2548E-04 -7.2645E-05 8.5849E-06 -8.0147E-09 -2.8778E-08 S9 1.75E+00 2.53E-03 -3.91E-04 4.79E-05 7.97E-06 -3.22E-07

[0088] Table 2

[0089] Example 2

[0090] 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.

[0091] 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.

[0092] The first lens L1 is a convex-concave 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 convex-concave lens with positive focal power, whose object side surface S3 is convex and whose image side surface S4 is concave. The third lens L3 is a biconcave lens with negative focal power, whose object side surface S5 is concave and whose image side surface S6 is concave. The fourth lens L4 is a biconvex lens with positive focal power, whose object side surface S6 is convex and whose image side surface S7 is convex. The fifth lens L5 is a convex-concave lens with positive focal power, whose object side surface S8 is convex and whose image side surface S9 is concave. The third lens L3 and the fourth lens L4 can be cemented to form a cemented lens.

[0093] The object-side surface S8 and the image-side surface S9 of the fifth lens L5 are aspherical mirror surfaces.

[0094] The optical lens may further include a stop STO, which may be disposed between the second lens L2 and the third lens L3 to improve imaging quality. For example, the stop STO may be disposed close to the object-side surface S5 of the third lens L3.

[0095] Optionally, the optical lens may further include a filter L6 and / or a protective glass L6' having an object side surface S10 and an image side surface S11, wherein the filter L6 may be used to correct color deviation and the protective glass L6' may be used to protect the image sensor chip IMA located at the imaging surface S12. Light from the object sequentially passes through each surface S1 to S11 and is finally imaged on the imaging surface S12.

[0096] Table 3 shows the radius of curvature R, thickness T, 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.

[0097]

[0098]

[0099] Table 3

[0100] Face number k A4 A6 A8 A10 A12 S8 1.1896E-01 -4.8927E-04 -3.4137E-05 8.7123E-06 -2.6146E-07 -6.3806E-08 S9 1.69E+00 2.56E-03 -4.55E-04 2.48E-05 7.40E-06 -1.72E-07

[0101] Table 4

[0102] Example 3

[0103] 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.

[0104] 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.

[0105] The first lens L1 is a biconcave lens with negative power, whose object side surface S1 is concave, and whose image side surface S2 is concave. The second lens L2 is a biconvex lens with positive 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 power, whose object side surface S5 is concave, and whose image side surface S6 is concave. The fourth lens L4 is a biconvex lens with positive power, whose object side surface S6 is convex, and whose image side surface S7 is convex. The fifth lens L5 is a convex-concave lens with positive power, whose object side surface S8 is convex, and whose image side surface S9 is concave. The third lens L3 and the fourth lens L4 can be cemented to form a cemented lens.

[0106] The object-side surface S8 and the image-side surface S9 of the fifth lens L5 are aspherical mirror surfaces.

[0107] The optical lens may further include a stop STO, which may be disposed between the second lens L2 and the third lens L3 to improve imaging quality. For example, the stop STO may be disposed close to the object-side surface S5 of the third lens L3.

[0108] Optionally, the optical lens may further include a filter L6 and / or a protective glass L6' having an object side surface S10 and an image side surface S11, wherein the filter L6 may be used to correct color deviation and the protective glass L6' may be used to protect the image sensor chip IMA located at the imaging surface S12. Light from the object sequentially passes through each surface S1 to S11 and is finally imaged on the imaging surface S12.

[0109] Table 5 shows the radius of curvature R, thickness T, 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.

[0110]

[0111] Table 5

[0112] Face number k A4 A6 A8 A10 A12 S8 -6.6107E-01 4.8368E-04 2.4230E-06 -1.3749E-05 1.1633E-06 -1.3099E-07 S9 8.18E+00 2.67E-03 2.52E-05 -2.07E-05 3.29E-06 -3.47E-07

[0113] Table 6

[0114] Example 4

[0115] 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.

[0116] 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.

[0117] The first lens L1 is a biconcave lens with negative power, whose object side surface S1 is concave, and whose image side surface S2 is concave. The second lens L2 is a biconvex lens with positive 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 power, whose object side surface S5 is concave, and whose image side surface S6 is concave. The fourth lens L4 is a biconvex lens with positive power, whose object side surface S6 is convex, and whose image side surface S7 is convex. The fifth lens L5 is a convex-concave lens with positive power, whose object side surface S8 is convex, and whose image side surface S9 is concave. The third lens L3 and the fourth lens L4 can be cemented to form a cemented lens.

[0118] The object-side surface S8 and the image-side surface S9 of the fifth lens L5 are aspherical mirror surfaces.

[0119] The optical lens may further include a stop STO, which may be disposed between the second lens L2 and the third lens L3 to improve imaging quality. For example, the stop STO may be disposed close to the object-side surface S5 of the third lens L3.

[0120] Optionally, the optical lens may further include a filter L6 and / or a protective glass L6' having an object side surface S10 and an image side surface S11, wherein the filter L6 may be used to correct color deviation and the protective glass L6' may be used to protect the image sensor chip IMA located at the imaging surface S12. Light from the object sequentially passes through each surface S1 to S11 and is finally imaged on the imaging surface S12.

[0121] Table 7 shows the radius of curvature R, thickness T, 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-mentioned Example 1.

[0122]

[0123] Table 7

[0124] Face number k A4 A6 A8 A10 A12 S8 -8.8771E-01 2.0158E-04 1.4075E-05 -1.1268E-05 1.9817E-06 -1.1419E-07 S9 6.13E-01 1.20E-03 1.65E-05 -1.43E-05 3.72E-06 -3.26E-07

[0125] Table 8

[0126] Example 5

[0127] 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.

[0128] 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.

[0129] The first lens L1 is a convex-concave 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 convex-concave lens with positive focal power, whose object side surface S3 is convex and whose image side surface S4 is concave. The third lens L3 is a biconvex lens with positive focal power, whose object side surface S5 is convex and whose image side surface S6 is convex. The fourth lens L4 is a convex-concave lens with negative focal power, whose object side surface S6 is concave and whose image side surface S7 is convex. The fifth lens L5 is a convex-concave lens with positive focal power, whose object side surface S8 is convex and whose image side surface S9 is concave. The third lens L3 and the fourth lens L4 can be cemented to form a cemented lens.

[0130] The object-side surface S8 and the image-side surface S9 of the fifth lens L5 are aspherical mirror surfaces.

[0131] The optical lens may further include a stop STO, which may be disposed between the second lens L2 and the third lens L3 to improve imaging quality. For example, the stop STO may be disposed close to the object-side surface S5 of the third lens L3.

[0132] Optionally, the optical lens may further include a filter L6 and / or a protective glass L6' having an object side surface S10 and an image side surface S11, wherein the filter L6 may be used to correct color deviation and the protective glass L6' may be used to protect the image sensor chip IMA located at the imaging surface S12. Light from the object sequentially passes through each surface S1 to S11 and is finally imaged on the imaging surface S12.

[0133] Table 9 shows the radius of curvature R, thickness T, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 5. Table 10 shows the cone coefficient and high-order coefficient that can be used for each aspheric mirror surface in Example 5, wherein each aspheric surface shape can be defined by the formula (1) given in the above-mentioned Example 1.

[0134]

[0135] Table 9

[0136] Face number k A4 A6 A8 A10 A12 S8 -3.4592E-01 2.8129E-04 7.0866E-05 -2.1889E-05 1.9455E-06 -2.0855E-07 S9 -4.17E-01 5.00E-03 2.29E-05 5.34E-05 1.24E-06 2.51E-07

[0137] Table 10

[0138] Example 6

[0139] 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.

[0140] like Figure 6As 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 convex-concave 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 convex-concave lens with positive focal power, whose object side surface S3 is convex and whose image side surface S4 is concave. The third lens L3 is a biconvex lens with positive focal power, whose object side surface S5 is convex and whose image side surface S6 is convex. The fourth lens L4 is a convex-concave lens with negative focal power, whose object side surface S6 is concave and whose image side surface S7 is convex. The fifth lens L5 is a convex-concave lens with positive focal power, whose object side surface S8 is convex and whose image side surface S9 is concave. The third lens L3 and the fourth lens L4 can be cemented to form a cemented lens.

[0142] The object-side surface S8 and the image-side surface S9 of the fifth lens L5 are aspherical mirror surfaces.

[0143] The optical lens may further include a stop STO, which may be disposed between the second lens L2 and the third lens L3 to improve imaging quality. For example, the stop STO may be disposed close to the object-side surface S5 of the third lens L3.

[0144] Optionally, the optical lens may further include a filter L6 and / or a protective glass L6' having an object side surface S10 and an image side surface S11, wherein the filter L6 may be used to correct color deviation and the protective glass L6' may be used to protect the image sensor chip IMA located at the imaging surface S12. Light from the object sequentially passes through each surface S1 to S11 and is finally imaged on the imaging surface S12.

[0145] Table 11 shows the radius of curvature R, thickness T, 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-mentioned Example 1.

[0146]

[0147] Table 11

[0148] Face number k A4 A6 A8 A10 A12 S8 -5.4923E-01 9.2871E-04 -3.3942E-04 -1.5830E-04 2.5737E-05 -3.6016E-06 S9 -3.15E-02 8.12E-03 -1.22E-03 3.67E-04 -1.22E-04 1.04E-05

[0149] Table 12

[0150] Example 7

[0151] The following reference Figure 7 An optical lens according to Example 7 of the present application is described. Figure 7A schematic structural diagram of an optical lens according to Example 7 of the present application is shown.

[0152] like Figure 7 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the object side to the image side along the optical axis.

[0153] The first lens L1 is a convex-concave lens with negative power, whose object side surface S1 is convex and whose image side surface S2 is concave. The second lens L2 is a convex-concave lens with positive power, whose object side surface S3 is convex and whose image side surface S4 is concave. The third lens L3 is a biconcave lens with negative power, whose object side surface S5 is concave and whose image side surface S6 is concave. The fourth lens L4 is a biconvex lens with positive power, whose object side surface S6 is convex and whose image side surface S7 is convex. The fifth lens L5 is a biconvex lens with positive power, whose object side surface S8 is convex and whose image side surface S9 is convex. The third lens L3 and the fourth lens L4 can be cemented to form a cemented lens.

[0154] The object-side surface S8 and the image-side surface S9 of the fifth lens L5 are aspherical mirror surfaces.

[0155] The optical lens may further include a stop STO, which may be disposed between the second lens L2 and the third lens L3 to improve imaging quality. For example, the stop STO may be disposed close to the object-side surface S5 of the third lens L3.

[0156] Optionally, the optical lens may further include a filter L6 and / or a protective glass L6' having an object side surface S10 and an image side surface S11, wherein the filter L6 may be used to correct color deviation and the protective glass L6' may be used to protect the image sensor chip IMA located at the imaging surface S12. Light from the object sequentially passes through each surface S1 to S11 and is finally imaged on the imaging surface S12.

[0157] Table 13 shows the radius of curvature R, thickness T, 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-mentioned Example 1.

[0158]

[0159] Table 13

[0160] Face number k A4 A6 A8 A10 A12 S8 -1.3450E-02 1.4247E-05 -6.6314E-06 1.5216E-06 6.5257E-08 2.4519E-08 S9 -4.50E+02 -2.62E-05 3.51E-05 4.51E-06 -6.75E-08 3.64E-08

[0161] Table 14

[0162] Example 8

[0163] 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.

[0164] like Figure 8 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 in sequence from the object side to the image side along the optical axis.

[0165] The first lens L1 is a convex-concave lens with negative power, whose object side surface S1 is convex and whose image side surface S2 is concave. The second lens L2 is a convex-concave lens with positive power, whose object side surface S3 is convex and whose image side surface S4 is concave. The third lens L3 is a biconcave lens with negative power, whose object side surface S5 is concave and whose image side surface S6 is concave. The fourth lens L4 is a biconvex lens with positive power, whose object side surface S6 is convex and whose image side surface S7 is convex. The fifth lens L5 is a biconvex lens with positive power, whose object side surface S8 is convex and whose image side surface S9 is convex. The third lens L3 and the fourth lens L4 can be cemented to form a cemented lens.

[0166] The object-side surface S8 and the image-side surface S9 of the fifth lens L5 are aspherical mirror surfaces.

[0167] The optical lens may further include a stop STO, which may be disposed between the second lens L2 and the third lens L3 to improve imaging quality. For example, the stop STO may be disposed close to the object-side surface S5 of the third lens L3.

[0168] Optionally, the optical lens may further include a filter L6 and / or a protective glass L6' having an object side surface S10 and an image side surface S11, wherein the filter L6 may be used to correct color deviation and the protective glass L6' may be used to protect the image sensor chip IMA located at the imaging surface S12. Light from the object sequentially passes through each surface S1 to S11 and is finally imaged on the imaging surface S12.

[0169] Table 15 shows the radius of curvature R, thickness T, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 8. Table 16 shows the cone 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-mentioned Example 1.

[0170]

[0171] Table 15

[0172] Face number k A4 A6 A8 A10 A12 S8 -1.5507E-01 -9.7453E-05 1.3750E-06 2.3593E-06 1.1333E-08 2.2942E-09 S9 -2.11E+02 -1.73E-04 3.23E-05 5.53E-06 -7.61E-08 -5.60E-09

[0173] Table 16

[0174] In summary, Examples 1 to 8 respectively satisfy the relationships shown in Table 17-1 and Table 17-2 below. In Table 17, the units of TTL, F, H, D, BFL, ENPD, and F34 are millimeters (mm), and the unit of FOV is degrees (°).

[0175] Conditional formula\Example Example 1 Example 2 Example 3 Example 4 TTL 18.1063 18.4563 17.5385 17.8866 F 5.71097 5.7211 6.07193 6.0371 H 6.184 6.184 6.184 6.184 FOV 60.0000 60.0000 60.0000 60.0000 D 7.030368 7.030368 7.030368 7.030368 BFL 1.9500 1.9500 3.1583 3.1583 ENPD 3.26341 3.2692 3.28213 3.2633 F34 15.380256 15.2127 -55.8107 -92.8394 TTL / F 3.1704 3.2260 2.8885 2.9628 TTL / H / FOV 0.0488 0.0497 0.0473 0.0482 D / H / FOV 0.0189 0.0189 0.0189 0.0189 |R11 / R12| 2.9218 2.9091 1.7822 1.8050 |R21 / R22| 0.5097 0.5133 0.7434 0.7540 |R42 / R51| 1.0472 1.0467 1.1638 1.1741 d1 / TTL 0.0525 0.0596 0.0456 0.0559 d5 / TTL 0.1602 0.1571 0.1360 0.1613 |F34 / F| 2.6931 2.6591 9.1916 15.3780 (FOV×F) / H 55.4104 55.5085 58.9126 58.5751 d45 / F 0.0175 0.0175 0.0165 0.0166 BFL / TTL 0.1077 0.1057 0.1801 0.1766 F / ENPD 1.7500 1.7500 1.8500 1.8500

[0176] Table 17-1

[0177]

[0178]

[0179] Table 17-2

[0180] 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.

[0181] 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 negative optical power; a second lens having positive optical power; a third lens having optical power; a fourth lens having optical power; and a fifth lens having positive refractive power; Wherein, the third lens and the fourth lens have different optical powers of positive and negative properties; The third lens and the fourth lens are cemented together to form a cemented lens; The distance TTL from the object side of the first lens to the imaging surface of the optical lens on the optical axis, the image height H corresponding to the maximum field of view FOV of the optical lens, and the maximum field of view FOV of the optical lens satisfy: 0.0473≤TTL / H / FOV×1°≤0.0510; A curvature radius R21 of the object side surface of the second lens and a curvature radius R22 of the image side surface of the second lens satisfy: 0.471≤|R21 / R22|≤1.0806; A curvature radius R42 of the image side surface of the fourth lens and a curvature radius R51 of the object side surface of the fifth lens satisfy: 0.5≤|R42 / R51|≤1.6512; The central thickness d5 of the fifth lens and the distance TTL from the object side of the first lens to the imaging surface of the optical lens on the optical axis satisfy: 0.0833≤d5 / TTL≤0.3; and The number of lenses having optical power in the optical lens is five.

2. The optical lens according to claim 1, characterized in that: The object-side surface of the first lens is convex, and the image-side surface is concave; and the object-side surface of the second lens is convex, and the image-side surface is concave.

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

4. The optical lens according to claim 2, characterized in that: The third lens has negative optical power, its object side surface is concave, and its image side surface is concave; and the fourth lens has positive optical power, its object side surface is convex, and its image side surface is convex.

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

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

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

8. The optical lens according to claim 1, characterized in that: The fifth lens has an aspherical mirror surface.

9. The optical lens according to any one of claims 1 to 8, 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 the following conditions: 2.8885≤TTL / F≤7.

10. The optical lens according to any one of claims 1 to 8, characterized in that: The maximum light passing diameter D of the object side of the first lens corresponding to the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view FOV of the optical lens, and the maximum field of view FOV of the optical lens satisfy: 0.0189≤D / H / FOV×1°≤0.

05.

11. The optical lens according to any one of claims 1 to 8, characterized in that: A curvature radius R11 of the object-side surface of the first lens and a curvature radius R12 of the image-side surface of the first lens satisfy: 1≤|R11 / R12|≤6.0017.

12. The optical lens according to any one of claims 1 to 8, characterized in that: The center thickness d1 of the first lens 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 satisfy: 0.0456≤d1 / TTL≤0.

15.

13. The optical lens according to any one of claims 1 to 8, characterized in that: The effective focal length F34 of the cemented lens formed by cementing the third lens and the fourth lens and the total effective focal length F of the optical lens satisfy the following: 0.5≤|F34 / F|≤18.

14. The optical lens according to any one of claims 1 to 8, characterized in that: The spacing distance d45 between the fourth lens and the fifth lens on the optical axis and the total effective focal length F of the optical lens satisfy the following: 0.0160≤d45 / F≤0.

1.

15. The optical lens according to any one of claims 1 to 8, 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 TTL from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis satisfy: 0.08≤BFL / TTL≤0.1801.

16. An optical lens, characterized in that: Along the optical axis from the object side to the image side, they include: a first lens having negative optical power; a second lens having positive optical power; a third lens having optical power; a fourth lens having optical power; and a fifth lens having positive refractive power; Wherein, the third lens and the fourth lens have different optical powers of positive and negative properties; The third lens and the fourth lens are cemented together to form a cemented lens; 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 the following conditions: 40°≤(FOV×F) / H≤60.8252°; The distance TTL from the object side of the first lens to the imaging surface of the optical lens on the optical axis, the image height H corresponding to the maximum field of view FOV of the optical lens, and the maximum field of view FOV of the optical lens satisfy: 0.0473≤TTL / H / FOV×1°≤0.0510; A curvature radius R21 of the object side surface of the second lens and a curvature radius R22 of the image side surface of the second lens satisfy: 0.471≤|R21 / R22|≤1.0806; A curvature radius R42 of the image side surface of the fourth lens and a curvature radius R51 of the object side surface of the fifth lens satisfy: 0.5≤|R42 / R51|≤1.6512; The central thickness d5 of the fifth lens and the distance TTL from the object side of the first lens to the imaging surface of the optical lens on the optical axis satisfy: 0.0833≤d5 / TTL≤0.3; and The number of lenses having optical power in the optical lens is five.

17. The optical lens according to claim 16, characterized in that: The object-side surface of the first lens is convex, and the image-side surface is concave; and the object-side surface of the second lens is convex, and the image-side surface is concave.

18. The optical lens according to claim 16, characterized in that: The object-side surface of the first lens is concave, and the image-side surface is concave; and the object-side surface of the second lens is convex, and the image-side surface is convex.

19. The optical lens according to claim 17, characterized in that: The third lens has negative optical power, its object side surface is concave, and its image side surface is concave; and the fourth lens has positive optical power, its object side surface is convex, and its image side surface is convex.

20. The optical lens according to claim 16, characterized in that: The third lens has positive optical power, its object side surface is convex, and its image side surface is convex; and the fourth lens has negative optical power, its object side surface is concave, and its image side surface is convex.

21. The optical lens according to claim 16, characterized in that: The object side surface of the fifth lens is convex, and the image side surface is concave.

22. The optical lens according to claim 16, characterized in that: The object side surface of the fifth lens is convex, and the image side surface is convex.

23. The optical lens according to claim 16, characterized in that: The fifth lens has an aspherical mirror surface.

24. The optical lens according to any one of claims 16 to 23, 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 the following conditions: 2.8885≤TTL / F≤7.

25. The optical lens according to any one of claims 16 to 23, characterized in that: The maximum light passing diameter D of the object side of the first lens corresponding to the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view FOV of the optical lens, and the maximum field of view FOV of the optical lens satisfy: 0.0189≤D / H / FOV×1°≤0.

05.

26. The optical lens according to any one of claims 16 to 23, characterized in that: A curvature radius R11 of the object-side surface of the first lens and a curvature radius R12 of the image-side surface of the first lens satisfy: 1≤|R11 / R12|≤6.0017.

27. The optical lens according to any one of claims 16 to 23, characterized in that: The center thickness d1 of the first lens 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 satisfy: 0.0456≤d1 / TTL≤0.

15.

28. The optical lens according to any one of claims 16 to 23, characterized in that: The effective focal length F34 of the cemented lens formed by cementing the third lens and the fourth lens and the total effective focal length F of the optical lens satisfy the following: 0.5≤|F34 / F|≤18.

29. The optical lens according to any one of claims 16 to 23, characterized in that: The spacing distance d45 between the fourth lens and the fifth lens on the optical axis and the total effective focal length F of the optical lens satisfy the following: 0.0160≤d45 / F≤0.

1.

30. The optical lens according to any one of claims 16 to 23, 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 TTL from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis satisfy: 0.08≤BFL / TTL≤0.1801.

31. An electronic device, characterized in that: The invention comprises the optical lens according to claim 1 or 16 and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

Images