Optical lens and electronic device with same

Abstract

The application provides an optical lens and an electronic device with the same. The optical lens comprises: a first lens, the first lens having negative optical power, the object side of the first lens being a convex surface, and the image side of the first lens being a concave surface; a second lens, the second lens having negative optical power, the object side of the second lens being a concave surface, and the image side of the second lens being a concave surface; a third lens, the third lens having positive optical power, at least one of the object side and the image side of the third lens being a convex surface; a fourth lens, the fourth lens having positive optical power, at least one of the object side and the image side of the fourth lens being a convex surface; a fifth lens, the fifth lens having optical power, at least one of the object side and the image side of the fifth lens being a convex surface; and a sixth lens, the sixth lens having optical power, at least one of the object side and the image side of the sixth lens being a convex surface. The application solves the problem that the optical lens in the prior art cannot simultaneously have a large aperture, high relative luminance and miniaturization.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical imaging devices, in particular to an optical lens and an electronic device having the same. BACKGROUND

[0002] Thanks to the rapid development of the automobile auxiliary driving system in recent years, optical lenses have been widely used in automobiles. Among them are vehicle-mounted reversing visual systems, vehicle recorders, automatic parking and panoramic parking systems, road navigation systems, etc. There are various types of optical lenses. Taking vehicle-mounted lenses as an example, vehicle-mounted lenses are key components for automatic driving auxiliary systems to obtain external information. With the rapid development of automatic driving auxiliary systems, the performance requirements of in-view optical lenses are also increasing, and are developing towards high resolution, large field of view and miniaturization. At the same time, as the requirements for night driving of automatic driving are gradually increasing, the requirements for night vision of vehicle-mounted lenses are also increasing, so there is a need in the market for an optical lens with a large aperture, high relative luminance and small size to meet the application of automobile in-view.

[0003] At present, some optical lenses in the prior art cannot simultaneously meet the requirements of high resolution and miniaturization. Some optical lenses in the prior art can achieve a clarity of one million pixels, but their chromatic aberration, astigmatism, distortion and other aberration problems are more serious, and the imaging quality is poor. Some optical lenses on the market have poor light transmission capability and cannot adapt to the dark shooting environment at night or in rainy days. The optical lenses in the prior art cannot simultaneously meet the requirements of small front aperture and miniaturization; nor can they simultaneously meet the requirements of large aperture and high resolution.

[0004] That is, the optical lenses in the prior art have the problem that a large aperture, high relative luminance and miniaturization cannot be simultaneously considered. SUMMARY

[0005] The main purpose of the present application is to provide an optical lens and an electronic device having the same, so as to solve the problem that the optical lenses in the prior art have a large aperture, high relative luminance and miniaturization cannot be simultaneously considered.

[0006] In order to achieve the above object, according to one aspect of the present application, an optical lens is provided, which comprises, in order from the object side to the image side: a first lens, the first lens having negative refractive power, the object side surface of the first lens being convex, and the image side surface of the first lens being concave; a second lens, the second lens having negative refractive power, the object side surface of the second lens being concave, and the image side surface of the second lens being concave; a third lens, the third lens having positive refractive power, at least one of the object side surface and the image side surface of the third lens being convex; a fourth lens, the fourth lens having positive refractive power, at least one of the object side surface and the image side surface of the fourth lens being convex; a fifth lens, the fifth lens having refractive power, at least one of the object side surface and the image side surface of the fifth lens being convex; and a sixth lens, the sixth lens having refractive power, at least one of the object side surface and the image side surface of the sixth lens being convex.

[0007] Further, the object side surface of the third lens is convex, and the image side surface of the third lens is convex.

[0008] Further, the object side surface of the third lens is convex, and the image side surface of the third lens is concave.

[0009] Further, the object side surface of the fourth lens is convex, and the image side surface of the fourth lens is convex.

[0010] Further, the object side surface of the fourth lens is concave, and the image side surface of the fourth lens is convex.

[0011] Further, the object side surface of the fifth lens is convex, and the image side surface of the fifth lens is convex.

[0012] Further, the object side surface of the fifth lens is convex, and the image side surface of the fifth lens is concave.

[0013] Further, the object side surface of the sixth lens is concave, and the image side surface of the sixth lens is convex.

[0014] Further, the object side surface of the sixth lens is convex, and the image side surface of the sixth lens is convex.

[0015] Further, the optical lens further comprises a diaphragm, the diaphragm being arranged between the third lens and the fourth lens.

[0016] Further, the fifth lens and the sixth lens are cemented to form a cemented lens.

[0017] Further, the total optical length of the optical lens, i.e. the distance from the center of the object side surface of the first lens of the optical lens to the center of the imaging surface of the optical lens TTL, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy: (TTL / H / FOV)*180≤20.

[0018] Further, the optical total track length of the optical lens, i.e., the center distance from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens TTL, the image height H corresponding to the maximum field of view angle of the optical lens, and the radian value θ corresponding to the maximum field of view angle of the optical lens satisfy: TTL / H / θ≤5.

[0019] Further, the optical total track length of the optical lens, i.e., the center distance from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens TTL, the focal length value F of the entire group of the optical lens, and the maximum field of view angle FOV of the optical lens satisfy: (TTL / (F*FOV))*180≤30.

[0020] Further, the optical total track length of the optical lens, i.e., the center distance from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens TTL, the focal length value F of the entire group of the optical lens, and the radian value θ corresponding to the maximum field of view angle of the optical lens satisfy: TTL / (F*θ)≤9.

[0021] Further, the maximum light passing aperture D of the object side surface of the first lens corresponding to the maximum field of view angle of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, and the radian value θ corresponding to the maximum field of view angle of the optical lens satisfy: D / H / θ≤3.

[0022] Further, the maximum light passing aperture D of the object side surface of the first lens corresponding to the maximum field of view angle of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, and the focal length value F of the entire group of the optical lens satisfy: D / H / F≤2.5.

[0023] Further, the optical total track length of the optical lens, i.e., the center distance from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens TTL, and the focal length value F of the entire group of the optical lens satisfy: 10≤TTL / F≤30.

[0024] Further, the focal length value F of the entire group of the optical lens and the image height H corresponding to the maximum field of view angle of the optical lens satisfy: 0.05≤F / H≤1.

[0025] Further, the radius of curvature R5 of the object side surface of the third lens and the focal length F3 of the third lens satisfy: 0.1≤R5 / F3≤5.

[0026] Further, the radius of curvature R3 of the object side surface of the second lens and the optical total track length of the optical lens, i.e., the center distance from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens TTL satisfy: R3 / TTL≤-0.1.

[0027] Further, a center thickness d10 of the fifth lens of the optical lens, a center thickness d11 of the sixth lens of the optical lens, and an optical total track length of the optical lens, i.e., a center distance TTL from a center of an object side of the first lens of the optical lens to an imaging surface of the optical lens satisfy: 0.01≤(d10+d11) / TTL≤0.5.

[0028] Further, an entire group focal length value F of the optical lens, an image height H corresponding to a maximum field angle of the optical lens, and an arc value θ corresponding to the maximum field angle of the optical lens satisfy: |(H-Fxθ) / (Fxθ)|≤0.3.

[0029] Further, an entrance pupil diameter ENPD of the optical lens and the image height H corresponding to the maximum field angle of the optical lens satisfy: 0.03≤ENPD / H≤0.85.

[0030] Further, a curvature radius R9 of the object side surface of the fifth lens and the center thickness d10 of the fifth lens of the optical lens satisfy: R9 / d10≥0.5.

[0031] Further, a refractive power of the first lens and an entire group refractive power of the optical lens satisfy:

[0032] Further, a curvature radius R3 of the object side surface of the second lens, a curvature radius R4 of the image side surface of the second lens, and a center thickness d3 of the second lens satisfy: R3 / (R4+d3)≤-0.5.

[0033] Further, an optical total track length of the optical lens, i.e., a center distance TTL from a center of an object side of the first lens of the optical lens to an imaging surface of the optical lens, and a maximum clear aperture D of the object side surface of the first lens corresponding to a maximum field angle of the optical lens satisfy: 0.5≤TTL / D≤5.

[0034] Further, an entire group focal length value F of the optical lens and a focal length value F3 of the third lens satisfy: F3 / F≤6.

[0035] Further, a curvature radius R1 of the object side surface of the first lens and an image height H corresponding to a maximum field angle of the optical lens satisfy: R1 / H≥2.5.

[0036] Further, an optical back focal length of the optical lens, i.e., a center distance BFL from a center of an image side of the sixth lens of the optical lens to the imaging surface, and an optical total track length of the optical lens, i.e., a center distance TTL from a center of an object side of the first lens of the optical lens to an imaging surface of the optical lens satisfy: BFL / TTL≥0.05.

[0037] According to another aspect of the present application, an optical lens is provided, which comprises, in order from the object side to the image side: a first lens having negative refractive power; a second lens having negative refractive power; a third lens having positive refractive power; a fourth lens having positive refractive power; a fifth lens having refractive power; and a sixth lens having refractive power; wherein a radius of curvature R3 of an object side surface of the second lens and an overall optical length of the optical lens, i.e. a center distance TTL from a center of an object side of the first lens of the optical lens to a center of an image plane of the optical lens, satisfy: R3 / TTL≤-0.1.

[0038] Further, the object side surface of the first lens is convex, and the image side surface of the first lens is concave.

[0039] Further, the object side surface of the second lens is concave, and the image side surface of the second lens is concave.

[0040] Further, the object side surface of the third lens is convex, and the image side surface of the third lens is convex.

[0041] Further, the object side surface of the third lens is convex, and the image side surface of the third lens is concave.

[0042] Further, the object side surface of the fourth lens is convex, and the image side surface of the fourth lens is convex.

[0043] Further, the object side surface of the fourth lens is concave, and the image side surface of the fourth lens is convex.

[0044] Further, the object side surface of the fifth lens is convex, and the image side surface of the fifth lens is convex.

[0045] Further, the object side surface of the fifth lens is convex, and the image side surface of the fifth lens is concave.

[0046] Further, the object side surface of the sixth lens is concave, and the image side surface of the sixth lens is convex.

[0047] Further, the object side surface of the sixth lens is convex, and the image side surface of the sixth lens is convex.

[0048] Further, the optical lens further comprises a diaphragm, which is arranged between the third lens and the fourth lens.

[0049] Further, the fifth lens and the sixth lens are cemented to form a cemented lens.

[0050] Further, the overall optical length of the optical lens, i.e. the center distance TTL from the center of the object side of the first lens of the optical lens to the center of the image plane of the optical lens, an image height H corresponding to a maximum field of view of the optical lens, and a maximum field of view FOV of the optical lens satisfy: (TTL / H / FOV)*180≤20.

[0051] Further, the optical total track length of the optical lens, i.e. the center distance from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens TTL, the image height H corresponding to the maximum field of view angle of the optical lens, and the radian value θ corresponding to the maximum field of view angle of the optical lens satisfy: TTL / H / θ≤5.

[0052] Further, the optical total track length of the optical lens, i.e. the center distance from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens TTL, the total focal length value F of the optical lens, and the maximum field of view angle FOV of the optical lens satisfy: (TTL / (F*FOV))*180≤30.

[0053] Further, the optical total track length of the optical lens, i.e. the center distance from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens TTL, the total focal length value F of the optical lens, and the radian value θ corresponding to the maximum field of view angle of the optical lens satisfy: TTL / (F*θ)≤9.

[0054] Further, the maximum light passing aperture D of the object side surface of the first lens corresponding to the maximum field of view angle of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, and the radian value θ corresponding to the maximum field of view angle of the optical lens satisfy: D / H / θ≤3.

[0055] Further, the maximum light passing aperture D of the object side surface of the first lens corresponding to the maximum field of view angle of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, and the total focal length value F of the optical lens satisfy: D / H / F≤2.5.

[0056] Further, the optical total track length of the optical lens, i.e. the center distance from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens TTL, and the total focal length value F of the optical lens satisfy: 10≤TTL / F≤30.

[0057] Further, the total focal length value F of the optical lens and the image height H corresponding to the maximum field of view angle of the optical lens satisfy: 0.05≤F / H≤1.

[0058] Further, the radius of curvature R5 of the object side surface of the third lens and the focal length F3 of the third lens satisfy: 0.1≤R5 / F3≤5.

[0059] Further, the center thickness d10 of the fifth lens of the optical lens, the center thickness d11 of the sixth lens of the optical lens, and the optical total track length of the optical lens, i.e. the center distance from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens TTL satisfy: 0.01≤(d10+d11) / TTL≤0.5.

[0060] Further, the optical total track length of the optical lens, i.e., the distance from the center of the object side of the first lens of the optical lens to the center of the imaging surface of the optical lens, TTL, and the maximum entrance pupil diameter of the object side of the first lens corresponding to the maximum field angle of the optical lens, D, satisfy: 0.5≤TTL / D≤5.

[0061] Further, the entrance pupil diameter of the optical lens, ENPD, and the image height H corresponding to the maximum field angle of the optical lens satisfy: 0.03≤ENPD / H≤0.85.

[0062] Further, the radius of curvature R9 of the object side of the fifth lens and the central thickness d10 of the fifth lens of the optical lens satisfy: R9 / d10≥0.5.

[0063] Further, the optical power of the first lens and the total optical power of the optical lens satisfy:

[0064] Further, the radius of curvature R3 of the object side of the second lens, the radius of curvature R4 of the image side of the second lens, and the central thickness d3 of the second lens satisfy: R3 / (R4+d3)≤-0.5.

[0065] Further, the optical total track length of the optical lens, i.e., the distance from the center of the object side of the first lens of the optical lens to the center of the imaging surface of the optical lens, TTL, and the maximum entrance pupil diameter of the object side of the first lens corresponding to the maximum field angle of the optical lens, D, satisfy: 0.5≤TTL / D≤5.

[0066] Further, the total focal length value F of the optical lens and the focal length value F3 of the third lens satisfy: F3 / F≤6.

[0067] Further, the radius of curvature R1 of the object side of the first lens and the image height H corresponding to the maximum field angle of the optical lens satisfy: R1 / H≥2.5.

[0068] Further, the optical back focal length of the optical lens, i.e., the distance from the center of the image side of the sixth lens of the optical lens to the center of the imaging surface, BFL, and the optical total track length of the optical lens, i.e., the distance from the center of the object side of the first lens of the optical lens to the center of the imaging surface of the optical lens, TTL, satisfy: BFL / TTL≥0.05.

[0069] According to another aspect of the present application, there is provided an electronic device comprising the optical lens described above and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

[0070] The optical lens comprises, from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens.

[0071] The first lens has a negative focal length, the object side surface of the first lens is convex, and the image side surface of the first lens is concave, so that the light rays are converged, the light rays on the object side are not excessively divergent, the image side surface of the first lens is designed to be concave, the light rays emitted by the first lens are more gentle, the aperture of the rear lens is controlled, and the design is miniaturized.

[0072] The second lens has a negative focal length, the object side surface of the second lens is concave, the image side surface of the second lens is concave, the central light rays and the edge light rays of each field are dispersed, the aperture of the stop is enlarged, the system illumination is increased, the correction of the aberration of the edge light rays and the central light rays is facilitated, the high resolution is achieved, the object side surface of the second lens is concave, the light rays emitted by the first lens are almost perpendicular to the object side surface of the second lens, the light rays are gently transitioned, the trend of the edge light rays is changed, the light energy loss is reduced, the illumination of the peripheral field of view is facilitated, the aperture of the front end of the optical lens is reduced, the volume is reduced, the miniaturization and cost reduction are facilitated, the image side surface of the second lens is concave, the light rays entering the third lens are obviously turned, the trend of the large-angle light rays is changed, under the condition of the same field of view angle, the light rays emitted by the image side surface of the second lens can make the subsequent optical system have a larger light receiving surface.

[0073] The third lens has positive focal power and converging effect on light rays, and is matched with the negative focal power lens of the second lens, which is beneficial to the light rays entering the rear lens gently and improving the resolving power; when the object side surface of the third lens is convex and the image side surface is convex, the object side surface is designed as convex, which can collect as much light rays of large field of view as possible into the rear optical system, and the convex shape towards the object side makes the light rays entering the third lens have obvious light turning, which changes the trend of light rays of large angle; meanwhile, the object side surface of the third lens is convex, which is matched with the convex image side surface to change the trend of edge light rays, reduce the loss of light energy, realize the reduction of the front lens aperture, reduce the volume, and is beneficial to miniaturization and cost reduction. When the object side surface of the third lens is convex and the image side surface is concave, the convex object side surface can make the optical path difference between the edge field of view light rays and the central field of view light rays accumulate rapidly, correct the aberration of the edge field of view, and improve the resolving power.

[0074] The fourth lens has positive focal power and gentle lens shape; when the object side surface and the image side surface of the fourth lens are both convex, the convex object side surface can compress the angle of incident light rays to realize gentle transition of light rays, make the divergent light rays enter the rear smoothly, further make the light ray trend transition smoothly, and is beneficial to reducing the aperture of the rear lens. In addition, the shape difference between the image side surface of the third lens and the object side surface of the fourth lens is obvious, and the fourth lens obviously changes the trend of light rays; under the condition that the aperture of the third lens is the same, the optical lens can be miniaturized. When the object side surface of the fourth lens is concave and the image side surface is convex, the fourth lens collects the light rays entering through the third lens, and the positive focal power is beneficial to making the light rays converge appropriately, making the light ray trend transition smoothly; by planning the surface shape, the light rays almost vertically enter when reaching the image side surface, the light deflection is small, the light energy loss is small, and meanwhile the sensitivity of the lens is reduced.

[0075] When the fifth lens has positive focal power, the object side surface is convex, and the image side surface is convex, the fifth lens has positive focal power and gentle lens shape, has converging effect on light rays, and can make the light rays converge on the imaging surface relatively smoothly, which can improve the astigmatism and field curvature of imaging, and improve the resolving power of the optical lens. The fifth lens has double convex shape and gentle lens shape, makes the divergent light rays converge smoothly into the rear, further makes the light ray trend transition smoothly to the imaging surface, and is beneficial to reducing the CRA. When the fifth lens has negative focal power, the object side surface is convex, and the image side surface is concave, the negative focal power makes the light rays diverge before and after the fifth lens, the convex object side surface can avoid the object side light rays being too divergent, reduce the light energy loss caused by the light rays of large field of view reaching the imaging surface, and is beneficial to improving the illumination of the edge field of view. The fifth lens has convex-concave shape and gentle lens shape, makes the light rays enter the rear smoothly, effectively improves the image quality, and optimizes the distortion; meanwhile, the light rays can reach the imaging surface smoothly, and the resolving power is improved.

[0076] When the sixth lens has a negative optical power and the object side surface is concave and the image side surface is convex, the sixth lens is a meniscus shape spherical lens, which collects the light passing through the fifth lens, and the negative optical power is conducive to making the light spread properly and making the light trend transition smoothly; the object side surface of the sixth lens is concave and the image side surface is convex, so that when the light reaches the image side surface, it is almost perpendicular to the incident, the light deflection is small, so that it is more concentrated when it reaches the imaging surface, the defocus correction edge field aberration is realized, the high resolution is realized, and the light energy loss is small, which is conducive to reducing the sensitivity of the lens. When the sixth lens has a positive optical power, the object side surface is convex, and the image side surface is convex, and at the same time the sixth lens adopts a glass spherical surface and the lens shape is gentle, so that the divergent light can smoothly enter the rear, further making the light trend transition smoothly, which can improve the astigmatism and field curvature of the imaging, and improve the resolving power of the optical lens. BRIEF DESCRIPTION OF DRAWINGS

[0077] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the application, and together with the description of the exemplary embodiments of the application given below, make an explanation of the application, and do not constitute an improper limitation of the application. In the drawings:

[0078] Figure 1 A structure schematic diagram of the optical lens of example one of the present application is shown;

[0079] Figure 2 A structure schematic diagram of the optical lens of example two of the present application is shown;

[0080] Figure 3 A structure schematic diagram of the optical lens of example three of the present application is shown;

[0081] Figure 4 A structure schematic diagram of the optical lens of example four of the present application is shown;

[0082] Figure 5 A structure schematic diagram of the optical lens of example five of the present application is shown;

[0083] Figure 6 A structure schematic diagram of the optical lens of example six of the present application is shown;

[0084] Figure 7 A structure schematic diagram of the optical lens of example seven of the present application is shown;

[0085] Figure 8 A structure schematic diagram of the optical lens of example eight of the present application is shown.

[0086] Among the above drawings, the following reference signs are included:

[0087] L1, first lens; S1, object side surface of the first lens; S2, image side surface of the first lens; L2, second lens; S3, object side surface of the second lens; S4, image side surface of the second lens; L3, third lens; S5, object side surface of the third lens; S6, image side surface of the third lens; STO, stop; L4, fourth lens; S8, object side surface of the fourth lens; S9, image side surface of the fourth lens; L5, fifth lens; S10, object side surface of the fifth lens; S11, image side surface of the fifth lens; L6, sixth lens; S11, object side surface of the sixth lens; S12, image side surface of the sixth lens; L7, filter; S13, object side surface of the filter; S14, image side surface of the filter; S15, object side surface of the protective glass; S16, image side surface of the protective glass; IMA, imaging surface. DETAILED DESCRIPTION

[0088] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict, unless otherwise specified. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0089] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs.

[0090] In the present application, unless otherwise specified, the orientation words such as "upper", "lower", "top", "bottom" are generally directed to the directions shown in the drawings, or are directed to the vertical, perpendicular or gravity directions of the components themselves; similarly, for the convenience of understanding and description, "inner" and "outer" refer to the inner and outer relative to the contour of the components themselves, but the above orientation words are not used to limit the present application.

[0091] It should be noted that, in the present 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, the first lens discussed below can also be referred to as the second lens or the third lens without departing from the teachings of the present application.

[0092] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for the convenience of illustration. Specifically, the shape of the spherical surface or aspherical surface shown in the drawings is shown by way of example. That is, the shape of the spherical surface or aspherical surface is not limited to the shape of the spherical surface or aspherical surface shown in the drawings. The drawings are merely examples and are not drawn strictly to scale.

[0093] In the present disclosure, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the position of the convex surface is not specified, 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 specified, it means that the lens surface is concave at least in the paraxial region. The surface of each lens near the object side is the object side surface of the lens, and the surface of each lens near the image side is the image side surface of the lens. The judgment of the surface shape in the paraxial region can be based on the judgment method of those skilled in the art, and the convexity or concavity can be judged by the R value (R refers to the radius of curvature in the paraxial region, usually refers to the R value in the lens data of the optical software). For the object side surface, when the R value is positive, it is determined to be convex, and when the R value is negative, it is determined to be concave. For the image side surface, when the R value is positive, it is determined to be concave, and when the R value is negative, it is determined to be convex.

[0094] In an example embodiment, the optical lens provided by the present application can be used as, for example, a vehicle-mounted lens. Light rays from the object side can be imaged on the image side.

[0095] In an example embodiment, the optical lens provided by the present application can be used as, for example, a projection lens or a laser radar transmitting end lens. At this time, the image side of the optical lens can be the image source side, and the object side can be the imaging side. Light rays from the image source side can be imaged on the imaging side. The imaging surface of the optical lens is the image source surface.

[0096] In order to solve the problem that the optical lens in the prior art cannot simultaneously consider large aperture, high relative luminance and miniaturization, the present application provides an optical lens and an electronic device having the same.

[0097] Embodiment one

[0098] As shown in Figures 1 to 8 , the optical lens comprises, in order from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The first lens has a negative focal power, the object side surface of the first lens is convex, and the image side surface of the first lens is concave. The second lens has a negative focal power, the object side surface of the second lens is concave, and the image side surface of the second lens is concave. The third lens has a positive focal power, at least one of the object side surface and the image side surface of the third lens is convex. The fourth lens has a positive focal power, at least one of the object side surface and the image side surface of the fourth lens is convex. The fifth lens has a focal power, at least one of the object side surface and the image side surface of the fifth lens is convex. The sixth lens has a focal power, at least one of the object side surface and the image side surface of the sixth lens is convex.

[0099] By planning the first lens to have negative focal power, the object side of the first lens is convex, which has the effect of converging light rays, which can avoid the light rays on the object side to be too divergent, and the image side is designed to be concave, so that the light rays emitted by the first lens can be more gentle, which is beneficial to control the aperture of the rear lens and is beneficial to realize the miniaturization design. By designing the first lens to be a crescent shape, the large field of view light rays can be collected as much as possible to enter the rear optical system, thereby increasing the light throughput. The first lens is preferably made of a lens material with high refractive index and high hardness to further improve the resolution quality. When the first lens uses a high refractive index material, it is beneficial to reduce the front aperture, and the object side is designed to be convex, which can reduce the interference of water droplets on the imaging quality.

[0100] The second lens has negative focal power and has a diverging effect on light rays, which can disperse the central light rays and the edge light rays of each field of view, expand the aperture of the stop, increase the system illumination, and facilitate the correction of the aberration of the edge light rays and the central light rays to achieve high resolution; the object side of the second lens is concave, which can cooperate with the concave image side to make the light rays emitted by the first lens almost vertically incident to the object side of the second lens, which is beneficial to the gentle transition of the light rays, changes the trend of the edge light rays, reduces the loss of light energy, is beneficial to the illumination of the peripheral field of view, realizes the reduction of the front aperture of the optical lens, is beneficial to the reduction of the volume, and is beneficial to miniaturization and cost reduction; at the same time, the image side of the second lens is concave, so that the light rays entering the third lens have a significant light ray turning, which changes the trend of the large-angle light rays. Under the same field of view angle condition, the light rays emitted by the image side of the second lens can make the subsequent optical system have a larger light receiving surface.

[0101] The third lens has positive focal power and has a converging effect on light rays, which is beneficial to the gentle entry of the light rays into the rear lens and improves the resolution; when the object side of the third lens is convex and the image side is convex, the object side is designed to be convex, which can collect as much as possible the large field of view light rays to enter the rear optical system, and the convex shape towards the object side makes the light rays entering the third lens have a significant light ray turning, which changes the trend of the large-angle light rays; at the same time, the object side of the third lens is convex, which cooperates with the convex image side to change the trend of the edge light rays, reduces the loss of light energy, realizes the reduction of the front aperture of the lens, reduces the volume, and is beneficial to miniaturization and cost reduction. When the object side of the third lens is convex and the image side is concave, the convex object side can make the optical path difference between the edge field of view light rays and the central field of view light rays accumulate rapidly, which gives the correction of the aberration of the edge field of view and improves the resolution capability.

[0102] The fourth lens has positive focal power and a gentle lens shape. When the object side surface and the image side surface of the fourth lens are both convex, the convex object side surface can compress the angle of the incident light to achieve a gentle transition of the light, so that the divergent light smoothly enters the rear, further making the light trend smoothly transition, which is conducive to reducing the aperture of the rear lens. In addition, the shape of the image side surface of the third lens and the object side surface of the fourth lens is obviously different, and the fourth lens obviously changes the light trend; in the case of the same aperture of the third lens, the purpose of miniaturization of the optical lens can be achieved. When the object side surface of the fourth lens is concave and the image side surface is convex, the fourth lens collects the light entering through the third lens, and the positive focal power is conducive to making the light converge appropriately, so that the light trend smoothly transitions; by planning the surface shape, the light is almost vertically incident when reaching the image side surface, the light deflection is small, the light energy loss is small, and the sensitivity of the lens is reduced.

[0103] When the fifth lens has positive focal power, the object side surface is convex, and the image side surface is convex, the fifth lens has positive focal power and a gentle lens shape, has a converging effect on the light, and can make the light converge more smoothly on the imaging surface, which can improve the astigmatism and field curvature of imaging and improve the resolving power of the optical lens. The fifth lens has a double-convex shape and a gentle lens shape, so that the divergent light smoothly enters the rear after convergence, further making the light trend smoothly transition to the imaging surface, while being conducive to reducing the CRA. When the fifth lens has negative focal power, the object side surface is convex, and the image side surface is concave, the negative focal power makes the light diverge before and after the fifth lens, the convex object side surface can avoid excessive divergence of the object side light, reduce the light energy loss when the large field of view light reaches the imaging surface, and improve the illumination of the edge field of view. The shape of the fifth lens is convex-concave and the lens shape is gentle, so that the light smoothly enters the rear, effectively improves the image quality, and optimizes the distortion; while the light smoothly reaches the imaging surface, the resolving power is improved.

[0104] When the sixth lens has negative focal power, the object side surface is concave, and the image side surface is convex, the sixth lens is a meniscus-shaped spherical lens, which collects the light entering through the fifth lens, and the negative focal power is conducive to making the light diffuse appropriately, so that the light trend smoothly transitions; the object side surface of the sixth lens is concave, and the image side surface is convex, so that the light is almost vertically incident when reaching the image side surface, the light deflection is small, the light is more concentrated when reaching the imaging surface, the defocus correction edge field aberration is realized, the high resolving power is realized, the light energy loss is small, and the sensitivity of the lens is reduced. When the sixth lens has positive focal power, the object side surface is convex, and the image side surface is convex, and the sixth lens adopts a glass spherical surface and a gentle lens shape, so that the divergent light smoothly enters the rear, further making the light trend smoothly transition, which can improve the astigmatism and field curvature of imaging and improve the resolving power of the optical lens.

[0105] In addition, the optical lens can meet the requirements of high resolution, small front aperture, miniaturization, large aperture and high resolution, and can reduce the chromatic aberration, astigmatism, distortion and other aberration problems of the optical lens under the premise of reaching the clarity of one million pixels. Meanwhile, the optical lens can have strong light transmission capacity and can adapt to the dark shooting environment at night or in rainy days.

[0106] In the embodiment, the optical lens further comprises a diaphragm arranged between the third lens and the fourth lens. This is conducive to effectively converging the light entering the optical lens, reducing the lens aperture at the rear end of the optical lens, and reducing the assembly sensitivity of the system.

[0107] In the embodiment, the fifth lens and the sixth lens are cemented to form a cemented lens. The light passing through the front lens can be smoothly transitioned to the rear optical system, and the total length of the optical lens can be reduced. The various aberrations of the system are fully corrected, the resolution is improved under the premise of compact structure, and the optical performance such as distortion and CRA is optimized. The cementing of the fifth lens and the sixth lens can reduce the air gap between the two lenses, reduce the total length of the system, complement the dispersion of the two lenses, reduce chromatic aberration and improve imaging quality, reduce the assembly components between the two lenses, reduce the process and cost, and further reduce the field curvature to correct the off-axis point aberration of the system. Meanwhile, it is conducive to reasonably allocating the focal lengths of the fifth lens and the sixth lens, which helps to achieve thermal compensation and obtain good temperature performance.

[0108] In the embodiment, the optical total length of the optical lens, i.e., the distance TTL from the center of the object side of the first lens of the optical lens to the center of the imaging surface of the optical lens, the image height H corresponding to the maximum field angle of the optical lens, and the maximum field angle FOV of the optical lens satisfy (TTL / H / FOV)*180≤20. Under the condition of the same imaging surface and the same image height, the length of the optical lens can be effectively limited to facilitate the miniaturization of the optical lens. Preferably, (TTL / H / FOV)*180≤10. It should be noted that FOV refers to the maximum field angle of the optical lens, which is associated with the image height H and is expressed as the corresponding field angle FOV using the image height H.

[0109] In the embodiment, the optical total length of the optical lens, i.e., the distance TTL from the center of the object side of the first lens of the optical lens to the center of the imaging surface of the optical lens, the image height H corresponding to the maximum field angle of the optical lens, and the radian value θ corresponding to the maximum field angle of the optical lens satisfy TTL / H / θ≤5. Under the condition of the same imaging surface and the same image height, the length of the optical lens can be effectively limited to facilitate the miniaturization of the optical lens. Preferably, TTL / H / θ≤3.

[0110] In the embodiment, the optical total length of the optical lens, i.e., the center distance TTL from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens, the overall focal length value F of the optical lens, and the maximum field of view FOV of the optical lens satisfy: (TTL / (F*FOV))*180≤30. When this condition is satisfied, the length of the optical lens can be effectively limited under the condition that the maximum field of view and the focal length of the optical lens are constant, which is beneficial to the miniaturization of the optical lens. Preferably, (TTL / (F*FOV))*180≤20.

[0111] In the embodiment, the optical total length of the optical lens, i.e., the center distance TTL from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens, the overall focal length value F of the optical lens, and the maximum field of view FOV of the optical lens satisfy: (TTL / (F*FOV))*180≤30. When this condition is satisfied, the length of the optical lens can be effectively limited under the condition that the maximum field of view and the focal length of the optical lens are constant, which is beneficial to the miniaturization of the optical lens. Preferably, (TTL / (F*FOV))*180≤20.

[0112] In the embodiment, the maximum field of view of the optical lens corresponds to the maximum aperture D of the object side of the first lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy: D / H / θ≤3. When this condition is satisfied, it is beneficial to ensure that the front aperture of the optical lens is small, and miniaturization can be achieved. Preferably, D / H / θ≤1.5.

[0113] In the embodiment, the maximum field of view of the optical lens corresponds to the maximum aperture D of the object side of the first lens, the image height H corresponding to the maximum field of view of the optical lens, and the overall focal length value F of the optical lens satisfy: D / H / F≤2.5. When this condition is satisfied, it is beneficial to ensure that the front aperture of the optical lens is small, and miniaturization can be achieved. Preferably, D / H / F≤1.8.

[0114] In the embodiment, the optical total length of the optical lens, i.e., the center distance TTL from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens, and the overall focal length value F of the optical lens satisfy: 10≤TTL / F≤30. If TTL / F is too small, the system sensitivity will be high, and TTL / F is larger, which is beneficial to the resolution and system sensitivity. Therefore, a range is considered for cost, miniaturization, system resolution, and sensitivity protection. Preferably, 10.3≤TTL / F≤15.

[0115] In the embodiment, the ratio between the overall focal length F of the optical lens and the image height H corresponding to the maximum field angle of the optical lens satisfies 0.05≤F / H≤1. By restricting the ratio between the overall focal length F of the optical lens and the image height H corresponding to the maximum field angle of the optical lens, the resolution is improved. Preferably, 0.15≤F / H≤0.8.

[0116] In the embodiment, the ratio between the radius of curvature R5 of the object side of the third lens and the focal length F3 of the third lens satisfies 0.1≤R5 / F3≤5. The larger radius of curvature of the object side of the third lens helps to reduce the incidence angle of the incident light on the object side of the third lens, reasonably matches the shape of the third lens, and makes the light entering the third lens have a significant light turning, changes the trend of large-angle light, and helps to reduce the front aperture. Preferably, 0.5≤R5 / F3≤2.

[0117] In the embodiment, the ratio between the radius of curvature R3 of the object side of the second lens and the overall optical length of the optical lens, that is, the center distance TTL from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens satisfies R3 / TTL≤-0.1. By controlling the radius of curvature of the object side of the second lens, the pupil image of the ghost image can be far away from the focal plane, effectively reducing the relative energy value of the ghost image, and improving the quality of the imaging picture of the optical lens. Preferably, R3 / TTL≤-0.5.

[0118] In the embodiment, the ratio between the center thickness d10 of the fifth lens of the optical lens, the center thickness d11 of the sixth lens of the optical lens and the overall optical length of the optical lens, that is, the center distance TTL from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens satisfies 0.01≤(d10+d11) / TTL≤0.5. Satisfying this condition, appropriately increasing the center thickness of the cemented lens helps to enhance the light control ability and control more light into the rear system to improve the relative illumination. Preferably, 0.05≤(d10+d11) / TTL≤0.3.

[0119] In the embodiment, the ratio between the overall focal length F of the optical lens, the image height H corresponding to the maximum field angle of the optical lens and the radian value θ corresponding to the maximum field angle of the optical lens satisfies |(H-F×θ) / (F×θ)|≤0.3. Satisfying this condition ensures that the focal length of the optical lens is increased while the field angle and the size of the imaging surface of the optical lens remain unchanged, and the imaging effect of the central region of the imaging surface is highlighted. Preferably, |(H-F×θ) / (F×θ)|≤0.25.

[0120] In the embodiment, the optical lens entrance pupil diameter ENPD and the image height H corresponding to the maximum field angle of the optical lens satisfy: 0.03≤ENPD / H≤0.85. Satisfying the condition, the entrance pupil diameter is large when the maximum field angle of the optical lens and the imaging surface size are unchanged, which is beneficial to increase the light throughput. Meanwhile, the ratio of the entrance pupil diameter to the image height is within a certain range, which can limit the total length of the optical lens and is beneficial to realize the miniaturization of the optical lens. Preferably, 0.05≤ENPD / H≤0.5.

[0121] In the embodiment, the radius of curvature R9 of the object side surface of the fifth lens and the central thickness d10 of the fifth lens of the optical lens satisfy: R9 / d10≥0.5. Satisfying the condition, the deviation of the incident angle and the exit angle of the light rays of different fields of view of the fifth lens can be reasonably controlled, the light rays are smoothly transitioned, and thus the sensitivity is reduced. Preferably, R9 / d10≥1.5.

[0122] In the embodiment, the focal power of the first lens and the total focal power of the optical lens satisfy: By restricting the relationship between the focal power of the first lens and the total focal power of the optical lens , the astigmatism of the optical lens can be effectively corrected, and the resolving power of the optical lens is improved. Preferably,

[0123] In the embodiment, the radius of curvature R3 of the object side surface of the second lens, the radius of curvature R4 of the image side surface of the second lens, and the central thickness d3 of the second lens satisfy: R3 / (R4+d3)≤-0.5. Satisfying the condition, the second lens adopts a special shape, which is helpful to realize miniaturization and large field angle. Preferably, R3 / (R4+d3)≤-3.

[0124] In the embodiment, the total optical length of the optical lens, i.e., the distance TTL from the center of the object side of the first lens of the optical lens to the center of the imaging surface of the optical lens, and the maximum light passing diameter D of the object side surface of the first lens corresponding to the maximum field angle of the optical lens satisfy: 0.5≤TTL / D≤5. Satisfying the condition, the entire optical system is more compact and smaller, and miniaturization is realized. Preferably, 1.25≤TTL / D≤3.5.

[0125] In the embodiment, the total focal length value F of the optical lens and the focal length value F3 of the third lens satisfy: F3 / F≤6. The third lens is preferably a glass lens. By reasonably allocating the focal length of the third lens, the focal length of the lens remains stable within a larger temperature range, the temperature performance is good, and the optical lens can still maintain stable performance when the temperature changes. Preferably, F3 / F≤5.95.

[0126] In this embodiment, the radius of curvature R1 of the object-side surface of the first lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the condition: R1 / H ≥ 2.5. Satisfying this condition ensures that the first lens has positive optical power at the same imaging surface and image height, and controlling the radius of curvature of the object-side surface is beneficial for light convergence, thus facilitating the achievement of a small CRA (Current Radiation Aspect Ratio). Preferably, R1 / H ≥ 2.8.

[0127] In this embodiment, the optical back focal length (BFL), i.e., the distance from the center of the image side of the sixth lens of the optical lens to the center of the imaging plane, satisfies the condition that BFL / TTL ≥ 0.05 with respect to the total optical length of the optical lens (TTL), i.e., the distance from the center of the object side of the first lens of the optical lens to the center of the imaging plane. Satisfying this condition ensures a long back focal length while achieving miniaturization, which is beneficial for module assembly. Furthermore, lengthening the back focal length helps reduce the energy of ghost images generated by reflections from the center of the lens and filter. Preferably, BFL / TTL ≥ 0.1.

[0128] Example 2

[0129] like Figures 1 to 8 As shown, the optical lens, from the object side to the image side, includes: a first lens with negative optical power; a second lens with negative optical power; a third lens with positive optical power; a fourth lens with positive optical power; a fifth lens with optical power; and a sixth lens with optical power. The radius of curvature R3 of the object side of the second lens satisfies the following relationship with the total optical length of the optical lens, i.e., the distance TTL from the center of the object side of the first lens to the center of the imaging plane of the optical lens: R3 / TTL ≤ -0.1. By controlling the radius of curvature of the object side of the second lens, the pupil image of the ghost image can be moved away from the focal plane, effectively reducing the relative energy value of the ghost image and improving the image quality of the optical lens. Preferably, R3 / TTL ≤ -0.5.

[0130] By designing the first lens to have negative optical power and a convex object-side surface to converge light, excessive divergence of light rays can be avoided. Combined with a concave image-side surface, the light emitted from the first lens is smoother, which helps control the aperture of the rear lens and facilitates miniaturization. Designing the first lens as a meniscus allows for the collection of light rays from a large field of view into the rear optical system, increasing light transmission. The first lens is preferably made of a high-refractive-index, high-hardness material to further improve image quality. Using a high-refractive-index material for the first lens allows for a smaller front aperture, and the convex object-side surface reduces the interference of water droplets on image quality.

[0131] The second lens has negative focal power, has a diverging effect on light rays, can disperse central light rays and edge light rays of each field of view, expand the aperture of the diaphragm, increase the illumination of the system, and is conducive to the correction of aberrations of the edge light rays and the central light rays to achieve high resolution; the object side of the second lens is a concave surface, which can cooperate with the image side of the concave surface to make the light rays emitted by the first lens almost vertically incident to the object side of the second lens, which is conducive to the smooth transition of the light rays, changes the trend of the edge light rays, reduces the loss of optical energy, is conducive to the illumination of the peripheral field of view, reduces the front aperture of the optical lens, is conducive to reducing the volume, and is conducive to miniaturization and cost reduction; at the same time, the image side of the second lens is a concave surface, so that the light rays entering the third lens have a significant light ray turning, which changes the trend of the large-angle light rays. Under the same field of view angle condition, the light rays emitted by the image side of the second lens can make the subsequent optical system have a larger light ray receiving surface.

[0132] The third lens has positive focal power, has a converging effect on light rays, and is conducive to the smooth entry of light rays into the rear lens and the improvement of resolution in cooperation with the negative focal power lens of the second lens; when the object side of the third lens is a convex surface and the image side is a convex surface, the object side is designed to be a convex surface to collect as much large field of view light as possible into the rear optical system, and the convex shape towards the object side makes the light rays entering the third lens have a significant light ray turning, which changes the trend of the large-angle light rays; at the same time, the object side of the third lens is a convex surface, which cooperates with the convex surface of the image side to change the trend of the edge light rays, reduce the loss of optical energy, reduce the front aperture of the lens, reduce the volume, and be conducive to miniaturization and cost reduction. When the object side of the third lens is a convex surface and the image side is a concave surface, the convex object side can make the optical path difference between the edge field of view light and the central field of view light accumulate rapidly, correct the aberration of the edge field of view, and improve the resolution capability.

[0133] The fourth lens has positive focal power and a flat lens shape; when the object side and the image side of the fourth lens are both convex surfaces, the convex object side can compress the angle of the incident light rays to achieve smooth transition of the light rays, make the diverging light rays smoothly enter the rear, further make the light ray trend transition smoothly, and be conducive to reducing the aperture of the rear lens. In addition, the shape difference between the image side of the third lens and the object side of the fourth lens is obvious, and the fourth lens significantly changes the trend of the light rays; under the condition that the aperture of the third lens is the same, the optical lens can be miniaturized. When the object side of the fourth lens is a concave surface and the image side is a convex surface, the fourth lens collects the light rays entering through the third lens, the positive focal power is conducive to making the light rays converge appropriately, making the light ray trend transition smoothly, and reducing the sensitivity of the lens.

[0134] When the optical power of the fifth lens is positive, the object side surface is convex, and the image side surface is convex, the fifth lens has positive optical power and a gentle lens shape, converges light rays, and makes the light rays converge on the imaging surface smoothly, thereby improving the astigmatism and field curvature of the imaging and improving the resolving power of the optical lens. The fifth lens has a biconvex shape and a gentle lens shape, which makes the divergent light rays converge smoothly into the rear, further makes the light rays smoothly transition to the imaging surface, and reduces the CRA. When the optical power of the fifth lens is negative, the object side surface is convex, and the image side surface is concave, the optical power is negative, which makes the light rays diverge before and after the fifth lens, the object side surface is convex, which avoids excessive divergence of the object side light rays, reduces the loss of light energy when the large field of view light rays reach the imaging surface, and improves the illumination of the edge field of view.

[0135] When the optical power of the sixth lens is negative, the object side surface is concave, and the image side surface is convex, the sixth lens is a meniscus-shaped spherical lens, collects the light rays entering through the fifth lens, the negative optical power is beneficial to appropriately diffuse the light rays and make the light rays smoothly transition, the object side surface of the sixth lens is concave, and the image side surface is convex, which makes the light rays almost vertically incident when reaching the image side surface, has small deflection, is more concentrated when reaching the imaging surface, corrects the edge field of view aberration of defocus, realizes high resolution, has small light energy loss, and is beneficial to reducing the sensitivity of the lens.

[0136] In addition, the optical lens can simultaneously meet the requirements of high resolution, small front aperture, miniaturization, large aperture, and high resolution. Meanwhile, the optical lens can reduce the chromatic aberration, astigmatism, distortion, and other aberration problems under the premise of reaching the clarity of one million pixels, can ensure that the optical lens has strong light transmission capability, and can adapt to the dark shooting environment at night or in rainy days.

[0137] In the embodiment, the optical lens further includes a diaphragm, which is arranged between the third lens and the fourth lens. This is beneficial to effectively converging the light rays entering the optical lens, reducing the lens aperture at the rear end of the optical lens, and reducing the assembly sensitivity of the system.

[0138] In the embodiment, the fifth lens and the sixth lens are cemented to form a cemented lens. The light rays passing through the front lens can be smoothly transitioned to the rear optical system, and the total length of the optical lens can be reduced. The various aberrations of the system are fully corrected, the resolution can be improved under the premise of compact structure, and the optical performance such as distortion and CRA is optimized. The fifth lens and the sixth lens are cemented, which can reduce the air gap between the two lenses, reduce the total length of the system, complement the dispersion of the two lenses, help to reduce chromatic aberration and improve imaging quality, reduce the assembly components between the two lenses, reduce the process, and reduce the cost. Further, the field curvature can be reduced, and the off-axis point aberration of the system can be corrected. At the same time, it is beneficial to reasonably allocate the focal length of the fifth lens and the sixth lens, which helps to achieve thermal compensation and obtain good temperature performance.

[0139] In the embodiment, the optical total length of the optical lens, that is, the center distance TTL from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens, the image height H corresponding to the maximum field angle of the optical lens, and the maximum field angle FOV of the optical lens satisfy: (TTL / H / FOV)*180≤20. Under the condition of the same imaging surface and the same image height, the length of the optical lens can be effectively limited to facilitate the miniaturization of the optical lens. Preferably, (TTL / H / FOV)*180≤10. It should be noted that FOV refers to the maximum field angle of the optical lens, which is associated with the image height H and is expressed as the corresponding field angle FOV using the image height H.

[0140] In the embodiment, the optical total length of the optical lens, that is, the center distance TTL from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens, the image height H corresponding to the maximum field angle of the optical lens, and the radian value θ corresponding to the maximum field angle of the optical lens satisfy: TTL / H / θ≤5. Under the condition of the same imaging surface and the same image height, the length of the optical lens can be effectively limited to facilitate the miniaturization of the optical lens. Preferably, TTL / H / θ≤3.

[0141] In the embodiment, the optical total length of the optical lens, that is, the center distance TTL from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens, the total focal length value F of the optical lens, and the maximum field angle FOV of the optical lens satisfy: (TTL / (F*FOV))*180≤30. Under the condition of the maximum field angle and the focal length of the optical lens, the length of the optical lens can be effectively limited to facilitate the miniaturization of the optical lens. Preferably, (TTL / (F*FOV))*180≤20.

[0142] In the embodiment, the optical total length of the optical lens, i.e., the center distance TTL from the object side of the first lens of the optical lens to the center of the imaging surface of the optical lens, the integral focal length value F of the optical lens, and the radian value θ corresponding to the maximum field angle of the optical lens satisfy: TTL / (F*θ)≤9. Satisfying the condition, in the case of the maximum field angle and the focal length of the optical lens, the length of the optical lens can be effectively limited, which is beneficial to realize the miniaturization of the optical lens. Preferably, TTL / (F*θ)≤6.

[0143] In the embodiment, the maximum light passing aperture D of the object side of the first lens corresponding to the maximum field angle of the optical lens, the image height H corresponding to the maximum field angle of the optical lens, and the radian value θ corresponding to the maximum field angle of the optical lens satisfy: D / H / θ≤3. Satisfying the condition is beneficial to ensure that the front end aperture of the optical lens is small, and miniaturization can be realized. Preferably, D / H / θ≤1.5.

[0144] In the embodiment, the maximum light passing aperture D of the object side of the first lens corresponding to the maximum field angle of the optical lens, the image height H corresponding to the maximum field angle of the optical lens, and the integral focal length value F of the optical lens satisfy: D / H / F≤2.5. Satisfying the condition is beneficial to ensure that the front end aperture of the optical lens is small, and miniaturization can be realized. Preferably, D / H / F≤1.8.

[0145] In the embodiment, the optical total length of the optical lens, i.e., the center distance TTL from the object side of the first lens of the optical lens to the center of the imaging surface of the optical lens, and the integral focal length value F of the optical lens satisfy: 10≤TTL / F≤30. If TTL / F is too small, the system sensitivity will be high, and TTL / F is larger, which is beneficial to resolution and system sensitivity; therefore, a range considering cost, miniaturization, system resolution, and sensitivity protection is considered. Preferably, 10.3≤TTL / F≤15.

[0146] In the embodiment, the integral focal length value F of the optical lens and the image height H corresponding to the maximum field angle of the optical lens satisfy: 0.05≤F / H≤1. By restricting the ratio between the integral focal length value F of the optical lens and the image height H corresponding to the maximum field angle of the optical lens, the resolution can be improved. Preferably, 0.15≤F / H≤0.8.

[0147] In the embodiment, the radius of curvature R5 of the object side of the third lens and the focal length F3 of the third lens satisfy: 0.1≤R5 / F3≤5. The radius of curvature of the object side of the third lens is larger, which is beneficial to reduce the incidence angle of the incident light on the object side of the third lens, reasonably match the shape of the third lens, make the light entering the third lens have obvious light turning, change the trend of large-angle light, and reduce the front end aperture. Preferably, 0.5≤R5 / F3≤2.

[0148] In the embodiment, the center thickness d10 of the fifth lens of the optical lens, the center thickness d11 of the sixth lens of the optical lens, and the total optical length of the optical lens, i.e., the center distance TTL from the object side of the first lens of the optical lens to the imaging surface of the optical lens satisfy: 0.01≤(d10+d11) / TTL≤0.5. Satisfying the condition formula, appropriately increasing the center thickness of the cemented lens, is beneficial to enhancing the regulation ability of light, is beneficial to regulating more light into the rear system, and improves the relative illumination. Preferably, 0.05≤(d10+d11) / TTL≤0.3.

[0149] In the embodiment, the total focal length F of the optical lens, the image height H corresponding to the maximum field angle of the optical lens, and the radian value θ corresponding to the maximum field angle of the optical lens satisfy: |(H-F×θ) / (F×θ)|≤0.3. Satisfying the condition formula ensures that the focal length of the optical lens is increased while the field angle of the optical lens and the size of the imaging surface remain unchanged, and highlights the imaging effect of the central region of the imaging surface. Preferably, |(H-F×θ) / (F×θ)|≤0.25.

[0150] In the embodiment, the entrance pupil diameter ENPD of the optical lens and the image height H corresponding to the maximum field angle of the optical lens satisfy: 0.03≤ENPD / H≤0.85. Satisfying the condition formula ensures that the entrance pupil diameter is large while the maximum field angle of the optical lens and the size of the imaging surface remain unchanged, which is beneficial to increasing the light quantity, and the ratio of the entrance pupil diameter to the image height is within a certain range, which can limit the total length of the optical lens and is beneficial to realizing the miniaturization of the optical lens. Preferably, 0.05≤ENPD / H≤0.5.

[0151] In the embodiment, the radius of curvature R9 of the object side of the fifth lens and the center thickness d10 of the fifth lens of the optical lens satisfy: R9 / d10≥0.5. Satisfying the condition formula can reasonably control the deviation of the incident angle and the exit angle of light in different fields of view of the fifth lens, so that the light transitions smoothly, thereby reducing the sensitivity. Preferably, R9 / d10≥1.5.

[0152] In the embodiment, the focal power of the first lens and the total focal power of the optical lens satisfy: By constraining the relationship between the focal power of the first lens and the total focal power of the optical lens , the astigmatism of the optical lens can be effectively corrected, and the resolving power of the optical lens is improved. Preferably,

[0153] In the embodiment, the radius of curvature R3 of the object side surface of the second lens, the radius of curvature R4 of the image side surface of the second lens and the central thickness d3 of the second lens satisfy the condition: R3 / (R4+d3)≤-0.5. The second lens adopts a special shape limited by the condition, which helps to realize miniaturization and a large field of view. Preferably, R3 / (R4+d3)≤-3.

[0154] In the embodiment, the total optical length of the optical lens, i.e. the distance TTL from the center of the object side surface of the first lens of the optical lens to the center of the imaging surface of the optical lens, and the maximum aperture D of the object side surface of the first lens corresponding to the maximum field of view of the optical lens satisfy the condition: 0.5≤TTL / D≤5. The condition makes the whole optical system more compact and smaller, realizing miniaturization. Preferably, 1.25≤TTL / D≤3.5.

[0155] In the embodiment, the total focal length F of the optical lens and the focal length F3 of the third lens satisfy the condition: F3 / F≤6. The third lens is preferably a glass lens. By reasonably distributing the focal length of the third lens, the focal length of the lens remains stable in a large temperature range, the temperature performance is good, and the optical lens can still maintain stable performance when the temperature changes. Preferably, F3 / F≤5.95.

[0156] In the embodiment, the radius of curvature R1 of the object side surface of the first lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the condition: R1 / H≥2.5. The first lens has a positive focal power and the radius of curvature of the object side surface is controlled, which is beneficial to light convergence and further helps to realize small CRA when the imaging surface and the image height are the same. Preferably, R1 / H≥2.8.

[0157] In the embodiment, the back focal length BFL of the optical lens, i.e. the distance from the center of the image side surface of the sixth lens of the optical lens to the center of the imaging surface, and the total optical length TTL of the optical lens, i.e. the distance from the center of the object side surface of the first lens of the optical lens to the center of the imaging surface of the optical lens, satisfy the condition: BFL / TTL≥0.05. The condition ensures the back focal length on the basis of realizing miniaturization, which is beneficial to the assembly of the module, and lengthening the back focal length is beneficial to reducing the energy of ghost images caused by the center reflection of the lens and the filter. Preferably, BFL / TTL≥0.1.

[0158] Optionally, the optical lens described above can further include a filter for correcting color deviation and a protective glass for protecting the photosensitive element located on the imaging surface.

[0159] The optical lens in the present application can adopt multiple lenses, for example, the above-mentioned six lenses. In the present application, at least one of the lens surfaces of each lens is an aspherical lens surface. The aspherical lens has the characteristic that the curvature continuously changes from the center of the lens to the periphery of the lens. Unlike the spherical lens which has a constant curvature from the center of the lens to the periphery of the lens, the aspherical lens has better curvature radius characteristics, and has the advantages of improving the distortion aberration and improving the astigmatism aberration. After using the aspherical lens, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality.

[0160] In the exemplary embodiments, the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens can all be glass lenses. The optical lens made of glass can inhibit the shift of the back focal length of the optical lens with temperature change, so as to improve the system stability. At the same time, the use of glass material can avoid the imaging blur of the lens caused by the high and low temperature changes in the use environment, thereby affecting the normal use of the lens. For example, the optical lens with all-glass design has a wide temperature range, and can maintain stable optical performance in the range of -40°C to 105°C. Specifically, when the image quality and reliability are focused on, the first lens to the sixth lens can all be glass aspherical lenses. Of course, in the application occasions with low temperature stability requirement, the first lens to the sixth lens in the optical lens can also be made of plastic. The optical lens made of plastic can effectively reduce the manufacturing cost. Of course, the first lens to the sixth lens in the optical lens can also be made of plastic and glass.

[0161] The present application also provides an electronic device comprising the optical lens described above and an imaging element for converting the optical image formed by the optical lens into an electrical signal. The imaging element can be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor device (CMOS). The electronic device can be a separate imaging device such as a digital camera, or an imaging module integrated on a mobile electronic device such as a mobile phone. The electronic device is equipped with the optical lens described above.

[0162] However, those skilled in the art should understand that the number of lenses constituting the optical lens can be changed without departing from the technical solutions claimed by the present application, so as to obtain the various results and advantages described in the present application. For example, although the six lenses are described as an example in the embodiments, the optical lens is not limited to including six lenses. If necessary, the optical lens can also include other numbers of lenses.

[0163] The specific surface shapes and parameters of the optical lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.

[0164] It should be noted that any one of the following examples 1 to 8 is applicable to all embodiments of the present application.

[0165] Example 1

[0166] like Figure 1 The diagram shown is a schematic of the optical lens structure of Example 1.

[0167] like Figure 1 As shown, the optical lens includes, in order from the object side to the image side: first lens L1, second lens L2, third lens L3, aperture stop STO, fourth lens L4, fifth lens L5, sixth lens L6, filter L7, object side surface of protective glass S15, image side surface of protective glass S16, and imaging surface IMA.

[0168] The first lens L1 has negative optical power, its object-side surface S1 is convex, and its image-side surface S2 is concave. The second lens L2 has negative optical power, its object-side surface S3 is concave, and its image-side surface S4 is concave. The third lens L3 has positive optical power, its object-side surface S5 is convex, and its image-side surface S6 is convex. The fourth lens L4 has positive optical power, its object-side surface S8 is convex, and its image-side surface S9 is convex. The fifth lens L5 has positive optical power, its object-side surface S10 is convex, and its image-side surface S11 is convex. The sixth lens L6 has negative optical power, its object-side surface S11 is concave, and its image-side surface S12 is convex. The filter L7 has an object-side surface S13 and an image-side surface S14. Light from the object passes through surfaces S1 to S16 in sequence and is finally imaged onto the imaging surface IMA.

[0169] In this example, the total effective focal length F of the optical lens is 1.930mm, the maximum field of view (FOV) of the optical lens is 160.000°, and the total length (TTL) of the optical lens is 21.777mm.

[0170] Table 1 shows the basic structural parameters of the optical lens in Example 1, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0171] Surf Radius Thickness Nd Vd 1 16.132 0.900 1.91 35.26 2 3.237 3.575 3 -49.980 0.650 1.49 70.42 4 4.237 1.066 5 11.233 1.803 1.92 20.88 6 -102.735 3.194 7 Infinity 0.153 8 7.430 3.021 1.59 68.35 9 -7.430 0.100 10 6.626 1.832 1.59 68.35 11 -3.389 0.650 1.92 20.88 12 -12.526 0.500 13 Infinity 0.500 1.52 64.21 14 Infinity 3.276 15 Infinity 0.445 1.52 64.21 16 Infinity 0.112 IMA Infinity

[0172] Table 1

[0173] In Example 1, the object-side surface and image-side surface of any one of the lenses from the first lens L1 to the sixth lens L6 are aspherical. The surface shape of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0174]

[0175] Wherein, x is the distance 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 inverse of the curvature radius R in Table 1); k is the conic coefficient; and A is the high-order term coefficient.

[0176] Example Two

[0177] As shown in Table 1, the optical lens of Example One is described. In this example and the following examples, some similar descriptions as Example One will be omitted for brevity. Figure 2 A schematic diagram of the optical lens structure of Example Two is shown. Figure 2 A schematic diagram of the optical lens structure of Example Two is shown.

[0178] As shown in Table 1, the optical lens of Example One is described. In this example and the following examples, some similar descriptions as Example One will be omitted for brevity. Figure 2 The optical lens includes, in order from the object side to the image side, a first lens L1, a second lens L2, a third lens L3, a stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter L7, an object side surface S15 of a protective glass, an image side surface S16 of the protective glass, and an imaging surface IMA.

[0179] The first lens L1 has a negative focal power, the object side surface S1 of the first lens is a convex surface, and the image side surface S2 of the first lens is a concave surface. The second lens L2 has a negative focal power, the object side surface S3 of the second lens is a concave surface, and the image side surface S4 of the second lens is a concave surface. The third lens L3 has a positive focal power, the object side surface S5 of the third lens is a convex surface, and the image side surface S6 of the third lens is a convex surface. The fourth lens L4 has a positive focal power, the object side surface S8 of the fourth lens is a convex surface, and the image side surface S9 of the fourth lens is a convex surface. The fifth lens L5 has a positive focal power, the object side surface S10 of the fifth lens is a convex surface, and the image side surface S11 of the fifth lens is a convex surface. The sixth lens L6 has a negative focal power, the object side surface S11 of the sixth lens is a concave surface, and the image side surface S12 of the sixth lens is a convex surface. The filter L7 has an object side surface S13 of the filter and an image side surface S14 of the filter. Light from an object passes through each surface S1 to S16 in order and is ultimately imaged on the imaging surface IMA.

[0180] In this example, the total effective focal length F of the optical lens is 1.867 mm, the maximum field of view FOV of the optical lens is 160.000°, and the total length TTL of the optical lens is 21.795 mm.

[0181] Table 2 shows the basic structure parameter table of the optical lens of Example Two, wherein the units of the curvature radius Radius and the thickness Thickness / distance are millimeters (mm).

[0182]

[0183]

[0184] Table 2

[0185] Example 3

[0186] like Figure 3 As shown, an optical lens of Example 3 of this application is described. Figure 3 A schematic diagram of the optical lens structure of Example 3 is shown.

[0187] like Figure 3 As shown, the optical lens includes, in order from the object side to the image side: first lens L1, second lens L2, third lens L3, aperture stop STO, fourth lens L4, fifth lens L5, sixth lens L6, filter L7, object side surface of protective glass S15, image side surface of protective glass S16, and imaging surface IMA.

[0188] The first lens L1 has negative optical power, its object-side surface S1 is convex, and its image-side surface S2 is concave. The second lens L2 has negative optical power, its object-side surface S3 is concave, and its image-side surface S4 is concave. The third lens L3 has positive optical power, its object-side surface S5 is convex, and its image-side surface S6 is concave. The fourth lens L4 has positive optical power, its object-side surface S8 is convex, and its image-side surface S9 is convex. The fifth lens L5 has positive optical power, its object-side surface S10 is convex, and its image-side surface S11 is convex. The sixth lens L6 has negative optical power, its object-side surface S11 is concave, and its image-side surface S12 is convex. The filter L7 has an object-side surface S13 and an image-side surface S14. Light from the object passes through surfaces S1 to S16 in sequence and is finally imaged onto the imaging surface IMA.

[0189] In this example, the total effective focal length F of the optical lens is 1.660mm, the maximum field of view (FOV) of the optical lens is 160.000°, and the total length (TTL) of the optical lens is 21.421mm.

[0190] Table 3 shows the basic structural parameters of the optical lens in Example 3, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm).

[0191]

[0192]

[0193] Table 3

[0194] Example 4

[0195] like Figure 4 As shown, the optical lens of Example 4 of this application is described. Figure 4A schematic diagram of the optical lens structure of Example Four is shown.

[0196] As shown in Figure 4 the optical lens comprises, in order from the object side to the image side: a first lens L1, a second lens L2, a third lens L3, a stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter L7, an object side surface S15 of a protection glass, an image side surface S16 of the protection glass, and an imaging surface IMA.

[0197] The first lens L1 has a negative refractive power, the object side surface S1 of the first lens is a convex surface, and the image side surface S2 of the first lens is a concave surface. The second lens L2 has a negative refractive power, the object side surface S3 of the second lens is a concave surface, and the image side surface S4 of the second lens is a concave surface. The third lens L3 has a positive refractive power, the object side surface S5 of the third lens is a convex surface, and the image side surface S6 of the third lens is a concave surface. The fourth lens L4 has a positive refractive power, the object side surface S8 of the fourth lens is a convex surface, and the image side surface S9 of the fourth lens is a convex surface. The fifth lens L5 has a positive refractive power, the object side surface S10 of the fifth lens is a convex surface, and the image side surface S11 of the fifth lens is a convex surface. The sixth lens L6 has a negative refractive power, the object side surface S11 of the sixth lens is a concave surface, and the image side surface S12 of the sixth lens is a convex surface. The filter L7 has an object side surface S13 of the filter and an image side surface S14 of the filter. Light from an object passes through each surface S1 to S16 in order and is finally imaged on the imaging surface IMA.

[0198] In the present example, the total effective focal length F of the optical lens is 1.737 mm, the maximum field of view FOV of the optical lens is 160.000°, and the total track length TTL of the optical lens is 21.720 mm.

[0199] Table 4 shows a table of basic structural parameters of the optical lens of Example Four, wherein the units of the radius of curvature Radius and the thickness / distance are millimeters (mm).

[0200]

[0201]

[0202] Table 4

[0203] Example Five

[0204] As shown in Figure 5 the optical lens of Example Five of the present application is described. Figure 5 A schematic diagram of the optical lens structure of Example Five is shown.

[0205] As shown in Figure 5As shown, the optical lens sequentially comprises, from the object side to the image side: a first lens L1, a second lens L2, a third lens L3, a stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter L7, an object side surface S15 of a protective glass, an image side surface S16 of the protective glass, and an imaging surface IMA.

[0206] The first lens L1 has a negative refractive power, the object side surface S1 of the first lens is a convex surface, and the image side surface S2 of the first lens is a concave surface. The second lens L2 has a negative refractive power, the object side surface S3 of the second lens is a concave surface, and the image side surface S4 of the second lens is a concave surface. The third lens L3 has a positive refractive power, the object side surface S5 of the third lens is a convex surface, and the image side surface S6 of the third lens is a convex surface. The fourth lens L4 has a positive refractive power, the object side surface S8 of the fourth lens is a concave surface, and the image side surface S9 of the fourth lens is a convex surface. The fifth lens L5 has a positive refractive power, the object side surface S10 of the fifth lens is a convex surface, and the image side surface S11 of the fifth lens is a convex surface. The sixth lens L6 has a negative refractive power, the object side surface S11 of the sixth lens is a concave surface, and the image side surface S12 of the sixth lens is a convex surface. The filter L7 has an object side surface S13 of the filter and an image side surface S14 of the filter. Light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging surface IMA.

[0207] In this example, the total effective focal length F of the optical lens is 1.995 mm, the maximum field of view FOV of the optical lens is 160.000°, and the total length TTL of the optical lens is 21.985 mm.

[0208] Table 5 shows the basic structural parameter table of the optical lens of Example Five, wherein the units of the radius of curvature Radius and the thickness Thickness / distance are millimeters (mm).

[0209]

[0210]

[0211] Table 5

[0212] Example Six

[0213] As shown in Table 5, the basic structural parameters of the optical lens of Example Six are described. Figure 6 As shown in Table 5, the basic structural parameters of the optical lens of Example Six are described. Figure 6 A schematic diagram of the optical lens structure of Example Six is shown.

[0214] As shown in Table 5, the basic structural parameters of the optical lens of Example Six are described. Figure 6 As shown, the optical lens sequentially comprises, from the object side to the image side: a first lens L1, a second lens L2, a third lens L3, a stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter L7, an object side surface S15 of a protective glass, an image side surface S16 of the protective glass, and an imaging surface IMA.

[0215] The first lens L1 has negative refractive power, the object side S1 of the first lens is convex, and the image side S2 of the first lens is concave. The second lens L2 has negative refractive power, the object side S3 of the second lens is concave, and the image side S4 of the second lens is concave. The third lens L3 has positive refractive power, the object side S5 of the third lens is convex, and the image side S6 of the third lens is convex. The fourth lens L4 has positive refractive power, the object side S8 of the fourth lens is concave, and the image side S9 of the fourth lens is convex. The fifth lens L5 has positive refractive power, the object side S10 of the fifth lens is convex, and the image side S11 of the fifth lens is convex. The sixth lens L6 has negative refractive power, the object side S11 of the sixth lens is concave, and the image side S12 of the sixth lens is convex. The filter L7 has the object side S13 of the filter and the image side S14 of the filter. Light from the object sequentially passes through each surface S1 to S16 and is finally imaged on the imaging plane IMA.

[0216] In this example, the total effective focal length F of the optical lens is 2.001 mm, the maximum field of view FOV of the optical lens is 160.000°, and the total length TTL of the optical lens is 20.901 mm.

[0217] Table 6 shows the basic structure parameter table of the optical lens of Example Six, wherein the units of the radius of curvature Radius and the thickness Thickness / distance are millimeters (mm).

[0218]

[0219]

[0220] Table 6

[0221] Example Seven

[0222] As shown in Table 7, the optical lens of Example Seven of the present application is described. Figure 7 A schematic diagram of the optical lens structure of Example Seven is shown. Figure 7 A schematic diagram of the optical lens structure of Example Seven is shown.

[0223] As shown in Table 7, the optical lens of Example Seven of the present application is described. Figure 7 The optical lens sequentially includes, from the object side to the image side, a first lens L1, a second lens L2, a third lens L3, a stop STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter L7, an object side S15 of a protective glass, an image side S16 of the protective glass, and an imaging plane IMA.

[0224] The first lens L1 has negative refractive power, the object side S1 of the first lens is convex, and the image side S2 of the first lens is concave. The second lens L2 has negative refractive power, the object side S3 of the second lens is concave, and the image side S4 of the second lens is concave. The third lens L3 has positive refractive power, the object side S5 of the third lens is convex, and the image side S6 of the third lens is convex. The fourth lens L4 has positive refractive power, the object side S8 of the fourth lens is convex, and the image side S9 of the fourth lens is convex. The fifth lens L5 has negative refractive power, the object side S10 of the fifth lens is convex, and the image side S11 of the fifth lens is concave. The sixth lens L6 has positive refractive power, the object side S11 of the sixth lens is convex, and the image side S12 of the sixth lens is convex. The filter L7 has the object side S13 of the filter and the image side S14 of the filter. Light from an object sequentially passes through each surface S1 to S16 and is finally imaged on the imaging plane IMA.

[0225] In the present example, the total effective focal length F of the optical lens is 1.687 mm, the maximum field of view FOV of the optical lens is 160.000°, and the total length TTL of the optical lens is 22.000 mm.

[0226] Table 7 shows the basic structure parameter table of the optical lens of Example Seven, wherein the units of the radius of curvature Radius and the thickness Thickness / distance are millimeters (mm).

[0227]

[0228]

[0229] Table 7

[0230] Example Eight

[0231] As shown in Table 8, the optical lens of Example Eight of the present application is described. Figure 8 A schematic diagram of the optical lens structure of Example Eight is shown. Figure 8 As shown in Table 8, the optical lens of Example Eight of the present application is described.

[0232] As shown in Table 8, the optical lens of Example Eight of the present application is described. Figure 8 The optical lens sequentially includes, from the object side to the image side, a first lens L1, a second lens L2, a third lens L3, a diaphragm STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter L7, an object side S15 of a protective glass, an image side S16 of the protective glass, and an imaging plane IMA.

[0233] The first lens L1 has negative refractive power, the object side S1 of the first lens is a convex surface, and the image side S2 of the first lens is a concave surface. The second lens L2 has negative refractive power, the object side S3 of the second lens is a concave surface, and the image side S4 of the second lens is a concave surface. The third lens L3 has positive refractive power, the object side S5 of the third lens is a convex surface, and the image side S6 of the third lens is a convex surface. The fourth lens L4 has positive refractive power, the object side S8 of the fourth lens is a convex surface, and the image side S9 of the fourth lens is a convex surface. The fifth lens L5 has negative refractive power, the object side S10 of the fifth lens is a convex surface, and the image side S11 of the fifth lens is a concave surface. The sixth lens L6 has positive refractive power, the object side S11 of the sixth lens is a convex surface, and the image side S12 of the sixth lens is a convex surface. The filter L7 has the object side S13 of the filter and the image side S14 of the filter. Light from an object sequentially passes through each surface S1 to S16 and is finally imaged on the imaging plane IMA.

[0234] In the present example, the total effective focal length F of the optical lens is 1.730 mm, the maximum field of view FOV of the optical lens is 160.000°, and the total length TTL of the optical lens is 21.471 mm.

[0235] Table 8 shows the basic structure parameter table of the optical lens of example eight, wherein the units of the radius of curvature Radius and the thickness Thickness / distance are millimeters (mm).

[0236]

[0237]

[0238] Table 8

[0239] In summary, examples one to eight respectively satisfy the relationships shown in Table 9.

[0240] Table 9

[0241] Table 10 gives the effective focal length F of the optical lens, the total length TTL of the optical lens, the maximum field of view FOV of the optical lens, etc. of examples one to eight.

[0242]

[0243]

[0244] Table 10

[0245] Obviously, the above-described embodiments are only some, but not all of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts should fall within the protection scope of the present application.

[0246] It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments consistent with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0247] It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments consistent with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0248] The preferred embodiments of the present application have been described above with the aid of drawing figures, and are not limited to those embodiments; instead, they will include, in addition to the above-described embodiments, all embodiments that are equivalent in whole or in part to the embodiments described and / or illustrated.

Claims

1. An optical lens characterized in that, The optical lens is composed of six lenses with optical power, which are sequentially arranged from the object side to the image side as follows: a first lens with negative optical power, the object side surface of the first lens is convex, and the image side surface of the first lens is concave; a second lens with negative optical power, the object side surface of the second lens is concave, and the image side surface of the second lens is concave; a third lens with positive optical power, the object side surface of the third lens is convex; a fourth lens with positive optical power, the image side surface of the fourth lens is convex; a fifth lens with optical power, the object side surface of the fifth lens is convex; a sixth lens with optical power, the optical power of the fifth lens and the optical power of the sixth lens are opposite in sign, and the image side surface of the sixth lens is convex; The optical total length of the optical lens, i.e. the center distance TTL from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens, and the overall focal length value F of the optical lens satisfy: 10≤TTL / F≤15; the optical back focal length of the optical lens, i.e. the center distance BFL from the image side center of the sixth lens of the optical lens to the imaging surface, and the optical total length of the optical lens, i.e. the center distance TTL from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens, satisfy: 0.235≥BFL / TTL≥0.

1.

2. The optical lens of claim 1, wherein, The image side surface of the third lens is convex.

3. The optical lens of claim 1, wherein, The image side surface of the third lens is concave.

4. The optical lens of claim 1, wherein, The object side surface of the fourth lens is convex.

5. The optical lens of claim 1, wherein, The object side surface of the fourth lens is concave.

6. The optical lens of claim 1, wherein, The image side surface of the fifth lens is convex.

7. The optical lens of claim 1, wherein, The image side surface of the fifth lens is concave.

8. The optical lens of claim 1, wherein, The object side surface of the sixth lens is concave.

9. The optical lens of claim 1, wherein, The object side surface of the sixth lens is convex.

10. The optical lens of claim 1, wherein, The optical lens further comprises a diaphragm, which is arranged between the third lens and the fourth lens.

11. The optical lens of claim 1, wherein, The fifth lens and the sixth lens are cemented to form a cemented lens.

12. The optical lens of claim 1, wherein, The optical total length of the optical lens, i.e. the center distance TTL from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy: (TTL / H / FOV)*180≤10.

13. The optical lens of claim 1, wherein, The optical total length of the optical lens, i.e. the center distance TTL from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy: TTL / H / θ≤3.

14. The optical lens of claim 1, wherein, The optical total length of the optical lens, i.e. the center distance TTL from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens, the overall focal length value F of the optical lens, and the maximum field of view FOV of the optical lens satisfy: (TTL / (F*FOV))*180≤20.

15. The optical lens of claim 1, wherein, An optical total length of the optical lens, i.e., a center distance TTL from a subject side center of the first lens of the optical lens to an imaging surface of the optical lens, an entire focal length value F of the optical lens, and an arc value θ corresponding to a maximum field angle of the optical lens satisfy: TTL / (F*θ)≤6.

16. The optical lens of claim 1, wherein, A maximum entrance pupil diameter ENPD of the optical lens, an image height H corresponding to the maximum field angle of the optical lens, and an arc value θ corresponding to the maximum field angle of the optical lens satisfy: D / H / θ≤1.

5.

17. The optical lens of claim 1, wherein, A maximum entrance pupil diameter D of a subject side surface of the first lens corresponding to the maximum field angle of the optical lens, an image height H corresponding to the maximum field angle of the optical lens, and an entire focal length value F of the optical lens satisfy: D / H / F≤1.

8.

18. The optical lens of claim 1, wherein, An optical total length of the optical lens, i.e., a center distance TTL from a subject side center of the first lens of the optical lens to an imaging surface of the optical lens, and an entire focal length value F of the optical lens satisfy: 10.3≤TTL / F≤15.

19. The optical lens of claim 1, wherein, An entire focal length value F of the optical lens and an image height H corresponding to a maximum field angle of the optical lens satisfy: 0.15≤F / H≤0.

8.

20. The optical lens of claim 1, wherein, A radius of curvature R5 of a subject side surface of the third lens and a focal length F3 of the third lens satisfy: 0.5≤R5 / F3≤2.

21. The optical lens of claim 1, wherein, A radius of curvature R3 of a subject side surface of the second lens and an optical total length of the optical lens, i.e., a center distance TTL from a subject side center of the first lens of the optical lens to an imaging surface of the optical lens satisfy: R3 / TTL≤-0.

5.

22. The optical lens of claim 1, wherein, A center thickness d10 of the fifth lens of the optical lens, a center thickness d11 of the sixth lens of the optical lens, and an optical total length of the optical lens, i.e., a center distance TTL from a subject side center of the first lens of the optical lens to an imaging surface of the optical lens satisfy: 0.05≤(d10+d11) / TTL≤0.

3.

23. The optical lens of claim 1, wherein, An entire focal length value F of the optical lens, an image height H corresponding to a maximum field angle of the optical lens, and an arc value θ corresponding to the maximum field angle of the optical lens satisfy: |(H-F*θ) / (F*θ)|≤0.

25.

24. The optical lens of claim 1, wherein, A maximum entrance pupil diameter ENPD of the optical lens and an image height H corresponding to a maximum field angle of the optical lens satisfy: 0.05≤ENPD / H≤0.

5.

25. The optical lens of claim 1, wherein, A radius of curvature R9 of a subject side surface of the fifth lens and a center thickness d10 of the fifth lens of the optical lens satisfy: R9 / d10≥1.

5.

26. The optical lens of claim 1, wherein, A refractive power φ1 of the first lens and an entire refractive power φ of the optical lens satisfy: -0.5≤φ1 / φ≤-0.

2.

27. The optical lens of claim 1, wherein, A radius of curvature R3 of a subject side surface of the second lens, a radius of curvature R4 of an image side surface of the second lens, and a center thickness d3 of the second lens satisfy: R3 / (R4+d3)≤-3.

28. The optical lens of claim 1, wherein, The optical total length of the optical lens, i.e., the center distance TTL from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens, and the maximum entrance pupil D of the object side surface of the first lens corresponding to the maximum field of view angle of the optical lens satisfy: 1.25≤TTL / D≤3.

5.

29. The optical lens of claim 1, wherein, The total focal length value F of the optical lens and the focal length value F3 of the third lens satisfy: F3 / F≤5.

95.

30. The optical lens of claim 1, wherein, The radius of curvature R1 of the object side surface of the first lens, and the image height H corresponding to the maximum field of view angle of the optical lens satisfy: R1 / H≥2.

8.

31. The optical lens of claim 1, wherein, The optical back focal length of the optical lens, i.e., the center distance BFL from the image side center of the sixth lens of the optical lens to the center of the imaging surface, and the optical total length of the optical lens, i.e., the center distance TTL from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens, satisfy: 0.235≥BFL / TTL≥0.

188.

32. The optical lens of claim 1, wherein, The optical lens satisfies any one of the following conditional expressions: The optical total length of the optical lens, i.e., the center distance TTL from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, and the maximum field of view angle FOV of the optical lens satisfy: 4.975≤(TTL / H / FOV)*180≤5.462; The optical total length of the optical lens, i.e., the center distance TTL from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, and the radian value θ corresponding to the maximum field of view angle of the optical lens satisfy: 1.583≤TTL / H / θ≤1.738; The optical total length of the optical lens, i.e., the center distance TTL from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens, the total focal length value F of the optical lens, and the maximum field of view angle FOV of the optical lens satisfy: 11.751≤(TTL / (F*FOV))*180≤14.671; The optical total length of the optical lens, i.e., the center distance TTL from the object side center of the first lens of the optical lens to the center of the imaging surface of the optical lens, the total focal length value F of the optical lens, and the radian value θ corresponding to the maximum field of view angle of the optical lens satisfy: 3.740≤TTL / (F*θ)≤4.669; The maximum entrance pupil D of the object side surface of the first lens corresponding to the maximum field of view angle of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, and the radian value θ corresponding to the maximum field of view angle of the optical lens satisfy: 0.815≤D / H / θ≤0.939; The maximum entrance pupil D of the object side surface of the first lens corresponding to the maximum field of view angle of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, and the total focal length value F of the optical lens satisfy: 1.222≤D / H / F≤1.491; An optical total track length of the optical lens, i.e., a center distance from a subject side center of the first lens of the optical lens to an imaging surface of the optical lens TTL and an overall focal length value of the optical lens F satisfy: 10.445≤TTL / F≤13.041; An overall focal length value of the optical lens F and an image height corresponding to a maximum field angle of the optical lens H satisfy: 0.354≤F / H≤0.428; A curvature radius R5 of a subject side surface of the third lens and a focal length F3 of the third lens satisfy: 0.871≤R5 / F3≤1.669; A curvature radius R3 of a subject side surface of the second lens and an optical total track length of the optical lens, i.e., a center distance from a subject side center of the first lens of the optical lens to an imaging surface of the optical lens TTL satisfy: -2.391≤R3 / TTL≤-0.813; A center thickness d10 of the fifth lens of the optical lens, a center thickness d11 of the sixth lens of the optical lens and an optical total track length of the optical lens, i.e., a center distance from a subject side center of the first lens of the optical lens to an imaging surface of the optical lens TTL satisfy: 0.09≤(d10+d11) / TTL≤0.182; An overall focal length value of the optical lens F, an image height H corresponding to a maximum field angle of the optical lens and an arc value θ corresponding to the maximum field angle of the optical lens satisfy: 0.011≤|(H-F×θ) / (F×θ)|≤0.164; An entrance pupil diameter ENPD of the optical lens and an image height H corresponding to a maximum field angle of the optical lens satisfy: 0.173≤ENPD / H≤0.209; A curvature radius R9 of a subject side surface of the fifth lens and a center thickness d10 of the fifth lens of the optical lens satisfy: 4.489≥R9 / d10≥2.648; An optical power φ1 of the first lens and an overall optical power φ of the optical lens satisfy: -0.423≤φ1 / φ≤-0.307; A curvature radius R3 of a subject side surface of the second lens, a curvature radius R4 of an image side surface of the second lens and a center thickness d3 of the second lens satisfy: -11.229≤R3 / (R4+d3)≤-4.192; An optical total track length of the optical lens, i.e., a center distance from a subject side center of the first lens of the optical lens to an imaging surface of the optical lens TTL and a maximum light passing aperture D of a subject side surface of the first lens corresponding to a maximum field angle of the optical lens satisfy: 1.459≤TTL / D≤2.231; An overall focal length value of the optical lens F and a focal length value F3 of the third lens satisfy: 4.315≤F3 / F≤5.929; A curvature radius R1 of a subject side surface of the first lens and an image height H corresponding to a maximum field angle of the optical lens satisfy: 4.320≥R1 / H≥3.

048.

33. An electronic device, comprising: An optical lens according to any one of claims 1 to 32 and an imaging element for converting an optical image formed by the optical lens into an electric signal.

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