Optical lens assembly, camera module and electronic device

Abstract

The embodiment of the present application discloses an optical lens, a camera module and an electronic device. The optical lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens arranged in sequence along an optical axis from an object plane to an image plane. The first lens has a negative refractive power, the second lens has a positive refractive power, and the third lens has a negative refractive power. The distance from the object side surface of the first lens to the image plane on the optical axis is TTL, and half of the image height corresponding to the maximum field angle of the optical lens is ImgH. TTL and ImgH satisfy the following condition: TTL / ImgH<1.9. The camera module formed by the optical lens has a wide field of view, clear and bright imaging effect, and small size, and has a wide application prospect. The optical lens is especially suitable for smart phones, mobile phones, PDAs, game consoles, PC information terminal devices and household appliances with camera function.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical imaging, and particularly relates to an optical lens, a camera module and an electronic device. BACKGROUND

[0002] In recent years, with the popularization of electronic devices, people have put forward higher requirements for the camera function of the electronic devices. For example, people hope that the camera function of the electronic devices has brighter and clearer imaging effects. In the related art, the pixel quantity is generally increased by increasing the size of a photosensitive element, so as to improve the imaging quality of the electronic device. However, this increases the size of the electronic device, which is not conducive to the thinness of the electronic device. SUMMARY

[0003] Embodiments of the present application provide an optical lens, a camera module and an electronic device, which can improve the imaging quality while realizing the thinness of the electronic device. The technical solutions are as follows.

[0004] In a first aspect, the embodiments of the present application provide an optical lens, comprising a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens arranged in sequence along an optical axis from an object plane to an image plane.

[0005] The first lens has negative refractive power, the curvature radius of the object side surface of the first lens at the optical axis is positive, and the curvature radius of the image side surface of the first lens at the optical axis is positive.

[0006] The second lens has positive refractive power.

[0007] The third lens has negative refractive power.

[0008] The distance from the object side surface of the first lens to the image plane on the optical axis is TTL, and half of the image height corresponding to the maximum field angle of the optical lens is ImgH, and TTL and ImgH satisfy the following conditional expression:

[0009] TTL / ImgH<1.9.

[0010] The optical lens assembly based on the embodiments of the present application has a wide field of view, clear and bright imaging effect, and miniaturization, and has a wide application prospect. The optical lens assembly of the embodiments of the present application is particularly suitable for smart phones, mobile phones, PDAs (Personal Digital Assistant), game consoles, PC and other information terminal devices involved in promoting miniaturization, and household appliances with camera functions, etc. The embodiments of the present application limit the distance TTL from the object side to the image side of the first lens on the optical axis to half of the image height ImgH corresponding to the maximum field of view angle of the optical lens assembly to satisfy TTL / ImgH<1.9, which can not only make the size of the optical lens assembly smaller, but also ensure the imaging quality.

[0011] In some embodiments, the focal length of the optical lens assembly is f, and f and TTL satisfy the following condition:

[0012] 2<TTL / f<3.5.

[0013] Based on the above embodiments, the total length of the optical lens assembly can be effectively shortened, the electronic device formed by the optical lens assembly can be thinned, and the focal length of the optical lens assembly can meet the demand of a wide field of view.

[0014] In some embodiments, the radius of curvature of the object side of the second lens at the optical axis is positive, and the radius of curvature of the image side of the second lens at the optical axis is negative.

[0015] Based on the above embodiments, by designing the shape of the object side of the second lens at the optical axis as a convex surface and the shape of the image side of the second lens at the optical axis as a convex surface, the light collected by the optical lens assembly is converged.

[0016] In some embodiments, the radius of curvature of the object side of the fifth lens at the optical axis is positive, and the radius of curvature of the image side of the fifth lens at the optical axis is negative.

[0017] Based on the above embodiments, by designing the shape of the object side of the fifth lens at the optical axis as a convex surface and the shape of the image side of the fifth lens at the optical axis as a convex surface, the light collected by the optical lens assembly is converged.

[0018] In some embodiments, the radius of curvature of the object side of the sixth lens at the optical axis is positive, and the radius of curvature of the image side of the sixth lens at the optical axis is positive.

[0019] Based on the above embodiments, by designing the shape of the object side of the sixth lens at the optical axis as a convex surface and the shape of the image side of the sixth lens at the optical axis as a concave surface, the optical lens assembly can eliminate aberration.

[0020] In some embodiments, the optical lens assembly has an F-number FNO, and the FNO satisfies the following condition:

[0021] 1.8≤FNO≤2.0.

[0022] Based on the above embodiments, by limiting the F-number FNO of the optical lens assembly to be between 1.8 and 2.0, the optical lens assembly can have a large aperture, and clear and bright imaging effects can be achieved.

[0023] In some embodiments, the optical lens assembly has a maximum field of view FOV, and the FOV satisfies the following condition:

[0024] FOV≥100°.

[0025] Based on the above embodiments, by limiting the maximum field of view FOV of the optical lens assembly to be greater than 100°, a wide field of view can be achieved, thereby enhancing the shooting view ability, allowing more restoration of the scene seen by the human eye within a short distance range, and improving the user experience.

[0026] In some embodiments, the second lens has a focal length f2, and the optical lens assembly has a focal length f, and f2 and f satisfy the following condition:

[0027] 0.8<f2 / f<1.5.

[0028] Based on the above embodiments, by limiting the focal length f2 of the second lens and the focal length f of the optical lens assembly to satisfy: 0.8<f2 / f<1.5, the second lens can provide sufficient positive refractive power, thereby shortening the total length of the optical lens assembly.

[0029] In some embodiments, the first lens has a focal length f1, and the optical lens assembly has a focal length f, and f1 and f satisfy the following condition:

[0030] f / f1>-1.

[0031] Based on the above embodiments, by limiting the focal length f1 of the first lens and the focal length f of the optical lens assembly to satisfy: f / f1>-1, the first lens can provide negative refractive power, which is conducive to achieving a wide field of view. At the same time, in the present application, the shape of the object side of the first lens at the optical axis is designed as a convex surface, and the shape of the image side of the first lens at the optical axis is designed as a concave surface, which can suppress the peripheral field of view distortion and prevent excessive increase in the peripheral field of view distortion.

[0032] In some embodiments, the optical lens assembly has a maximum field of view, and half of the maximum field of view is ω, and the image side of the sixth lens at the optical axis has a radius of curvature R S12 , and ω and R S12 satisfy the following condition:

[0033] 2mm-1 <tanω / R S12 <4mm -1 .

[0034] Based on the above embodiments, by limiting the half of the maximum field angle of the optical lens ω and the radius of curvature R of the image side surface of the sixth lens at the optical axis to satisfy: 2mm S12 -1 <tanω / R S12 <4mm -1 , the image surface curvature can be well corrected from the center view angle to the peripheral view angle, which is beneficial to realize wide-angle. If tanω / R S12 ≥4mm -1 , the radius of curvature of the image side surface of the sixth lens closest to the image plane of the optical lens is too small, especially at the peripheral view angle, which can inhibit excessive aberration correction; if tanω / R S12 ≤2mm -1 , the radius of curvature of the image side surface of the sixth lens at the optical axis is too large, which is not conducive to the compression of the total length of the optical system.

[0035] In some embodiments, the minimum distance of the image side surface of the sixth lens to the image plane on the optical axis is BF, and BF satisfies the following condition formula:

[0036] BF≥0.77mm.

[0037] Based on the above embodiments, by limiting the minimum distance BF of the image side surface of the sixth lens to the image plane on the optical axis to satisfy: BF≥0.77mm, sufficient focusing range can be ensured, and the angle of light incident to the image plane is inhibited from being too large, so that the optical lens and the photosensitive element are matched.

[0038] In some embodiments, the Abbe number of the third lens is v3, and v3 satisfies the following condition formula:

[0039] v3<30.

[0040] Based on the above embodiments, by limiting the Abbe number v3 of the third lens to be less than 30, the third lens can be made of a high-scattering material, which helps to strengthen the deflection degree when light exits, so that the same refraction effect can be achieved in a smaller space, thereby facilitating the reduction of the total length of the optical lens, and the color difference correction ability is strong, which can improve the lens resolution.

[0041] In a second aspect, the embodiments of the present application provide a camera module, comprising:

[0042] The optical lens and the image sensor described above, and the image sensor is arranged on the image side of the optical lens.

[0043] ​The camera module based on the embodiment of the present application has the characteristics of wide field of view, clear and bright imaging effect and miniaturization, and has wide application prospect. The camera module of the embodiment of the present application is especially suitable for smart phones, mobile phones, PDA (Personal Digital Assistant), game consoles, PC and other information terminal devices related to miniaturization, and household appliances with camera function and the like.

[0044] In a third aspect, the embodiment of the present application provides an electronic device, comprising:

[0045] a housing; and

[0046] The camera module described above is arranged on the housing.

[0047] The electronic device based on the embodiment of the present application has the characteristics of wide field of view, clear and bright imaging effect and miniaturization in camera function, and has wide application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0049] Figure 1 is a structural schematic diagram of an optical lens provided by the first embodiment of the present application;

[0050] Figure 2 is a longitudinal spherical aberration curve, an astigmatism curve and a distortion curve of the optical lens provided by the first embodiment of the present application;

[0051] Figure 3 is a structural schematic diagram of an optical lens provided by the second embodiment of the present application;

[0052] Figure 4 is a longitudinal spherical aberration curve, an astigmatism curve and a distortion curve of the optical lens provided by the second embodiment of the present application;

[0053] Figure 5 is a structural schematic diagram of an optical lens provided by the third embodiment of the present application;

[0054] Figure 6 is a longitudinal spherical aberration curve, an astigmatism curve and a distortion curve of the optical lens provided by the third embodiment of the present application;

[0055] Figure 7 is a structural schematic diagram of an optical lens provided by the fourth embodiment of the present application;

[0056] Figure 8 is a longitudinal spherical aberration curve, a lateral aberration curve, and a distortion curve of the optical lens assembly provided in Embodiment Four of the present application;

[0057] Figure 9 is a structural schematic diagram of the optical lens assembly provided in Embodiment Five of the present application;

[0058] Figure 10 is a longitudinal spherical aberration curve, a lateral aberration curve, and a distortion curve of the optical lens assembly provided in Embodiment Five of the present application;

[0059] Figure 11 is a structural schematic diagram of the optical lens assembly provided in Embodiment Six of the present application;

[0060] Figure 12 is a longitudinal spherical aberration curve, a lateral aberration curve, and a distortion curve of the optical lens assembly provided in Embodiment Six of the present application;

[0061] Figure 13 is a structural schematic diagram of the optical lens assembly provided in Embodiment Seven of the present application;

[0062] Figure 14 is a longitudinal spherical aberration curve, a lateral aberration curve, and a distortion curve of the optical lens assembly provided in Embodiment Seven of the present application;

[0063] Figure 15 is a structural schematic diagram of the optical lens assembly provided in Embodiment Eight of the present application;

[0064] Figure 16 is a longitudinal spherical aberration curve, a lateral aberration curve, and a distortion curve of the optical lens assembly provided in Embodiment Eight of the present application. DETAILED DESCRIPTION

[0065] In order to make the objects, technical solutions and advantages of the present application clearer, the following will further describe the embodiments of the present application with reference to the accompanying drawings.

[0066] The following description refers to the accompanying drawings. Unless otherwise noted, like elements in different drawings represent like or similar elements. The following examples of embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0067] In recent years, with the popularization of electronic devices, people have higher requirements for the camera function on the electronic devices. For example, people hope that the camera function of the electronic devices has brighter and clearer imaging effect and the like. In the related art, the pixel number is generally increased by increasing the size of the photosensitive element, so as to improve the imaging quality of the electronic devices. However, this will increase the size of the electronic devices, which is not conducive to the thinness of the electronic devices. Based on this, the embodiments of the present application provide an optical lens, a camera module and an electronic device, which are aimed at solving the above technical problems.

[0068] In a first aspect, the embodiments of the present application provide an optical lens. The optical lens comprises a first lens 110, a second lens 120, a third lens 130, a fourth lens 140, a fifth lens 150 and a sixth lens 160 which are sequentially arranged along an optical axis from an object plane to an image plane. The first lens 110 has a negative refractive power, the curvature radius of the object side surface of the first lens 110 at the optical axis is positive, and the curvature radius of the image side surface of the first lens 110 at the optical axis is positive; the second lens 120 has a positive refractive power; the third lens 130 has a negative refractive power; wherein the distance from the object side surface of the first lens 110 to the image plane on the optical axis is TTL, and half of the image height corresponding to the maximum field angle of the optical lens is ImgH, and TTL and ImgH satisfy the following condition formula: TTL / ImgH<1.9.

[0069] The camera module formed by the optical lens based on the embodiments of the present application has the characteristics of wide field angle, clear and bright imaging effect and miniaturization, and has a wide application prospect. The optical lens of the embodiments of the present application is especially suitable for smart phones, mobile phones, PDA (Personal Digital Assistant), game consoles, PC and other information terminal devices related to promoting miniaturization, and household appliances with camera function and the like. The embodiments of the present application limit the distance TTL from the object side surface of the first lens 110 to the image plane on the optical axis and half of the image height ImgH corresponding to the maximum field angle of the optical lens to satisfy:

[0070] TTL / ImgH<1.9, which can not only make the size of the optical lens smaller, so that the electronic device formed thereby can realize thinness, but also can ensure the imaging quality.

[0071] The focal length of the first lens 110 is f1, and the focal length of the optical lens is f, and f1 and f can satisfy the following condition formula: f / f1>-1. By limiting the focal length f1 of the first lens 110 and the focal length f of the optical lens to be greater than -1, the first lens 110 can provide negative optical power, which is conducive to realizing a wide field angle. At the same time, by designing the shape of the object side surface of the first lens 110 at the optical axis as a convex surface and the shape of the image side surface of the first lens 110 at the optical axis as a concave surface, the peripheral field distortion can be suppressed, and the excessive increase of the peripheral field distortion can be prevented.

[0072] The curvature radius of the object side surface of the second lens 120 at the optical axis can be positive, and the curvature radius of the image side surface of the second lens 120 at the optical axis can be negative. By designing the shape of the object side surface of the second lens 120 at the optical axis as a convex surface and the shape of the image side surface of the second lens 120 at the optical axis as a convex surface, the light collected by the optical lens assembly can be converged. The focal length of the second lens 120 is f2, and the focal length of the optical lens assembly is f. f2 and f can satisfy the following condition formula: 0.8 < f2 / f < 1.5. By limiting the focal length f2 of the second lens 120 and the focal length f of the optical lens assembly to be between 0.8 and 1.5, the second lens 120 can provide sufficient positive refractive power, thereby shortening the total length of the optical lens assembly.

[0073] The Abbe number v3 of the third lens 130 can satisfy the following condition formula: v3 < 30. By limiting the Abbe number v3 of the third lens 130 to be less than 30, the third lens 130 can be made of a highly scattering material, which helps to increase the degree of deflection when the light exits, thereby achieving the same refraction effect in a smaller space, facilitating the reduction of the total length of the optical lens assembly, while having strong chromatic aberration correction capability and improving the resolution of the lens.

[0074] The curvature radius of the object side surface of the fifth lens 150 at the optical axis can be positive, and the curvature radius of the image side surface of the fifth lens 150 at the optical axis can be negative. By designing the shape of the object side surface of the fifth lens 150 at the optical axis as a convex surface and the shape of the image side surface of the fifth lens 150 at the optical axis as a convex surface, the optical lens assembly can receive the light from the previous lens and control the incident angle of the light.

[0075] The curvature radius of the object side surface of the sixth lens 160 at the optical axis is positive, and the curvature radius of the image side surface of the sixth lens 160 at the optical axis is positive. By designing the shape of the object side surface of the sixth lens 160 at the optical axis as a convex surface and the shape of the image side surface of the sixth lens 160 at the optical axis as a concave surface, the optical lens assembly can eliminate aberrations. The minimum distance from the image side surface of the sixth lens 160 to the image plane at the optical axis is BF, and BF can satisfy the following condition formula: BF ≥ 0.77 mm. By limiting the minimum distance BF from the image side surface of the sixth lens 160 to the image plane at the optical axis to be greater than 0.77 mm, a sufficient focusing range can be ensured, and the angle of light incident to the image plane is suppressed from being too large, thereby matching the optical lens assembly with the photosensitive element.

[0076] Half of the maximum field angle of the optical lens assembly is ω, and the curvature radius of the image side surface of the sixth lens 160 at the optical axis is R S12 , ω and R S12 can satisfy the following condition formula: 2 mm -1 <tanω / R S12<4mm -1 The half of the maximum field angle of the optical lens set ω and the curvature radius R of the image side surface of the sixth lens 160 at the optical axis are related by the following formula: tanω / R S12 The curvature radius of the image side surface of the sixth lens 160 at the optical axis is limited to satisfy: 2mm -1 <tanω / R S12 <4mm -1 The image surface curvature can be corrected well from the central view angle to the peripheral view angle, which is beneficial to wide-angle. If tanω / R S12 ≥4mm -1 The curvature radius of the image side surface of the sixth lens 160 at the optical axis is too small, especially at the peripheral view angle, which can inhibit excessive aberration correction; if tanω / R S12 ≤2mm -1 The curvature radius of the image side surface of the sixth lens 160 at the optical axis is too large, which is not conducive to the compression of the total length of the optical system.

[0077] The focal length of the optical lens set is f, and f and TTL satisfy the following condition formula: 2

[0078] In order to make the optical lens set have the characteristics of large aperture, the aperture number FNO of the optical lens set can satisfy the following condition formula: 1.8

[0079] The maximum field angle FOV of the optical lens set can satisfy: FOV≥100°. Through the above limitation of the maximum field angle of the optical lens set being greater than 100°, a wide field angle can be achieved, thereby enhancing the shooting view ability, making it possible to restore more scenes seen by the human eye in a short distance range, and improving the user experience.

[0080] The refractive power of the lens can be the refractive power of the lens at the optical axis. The object side surface of the lens is the surface of the lens toward the object surface. The image side surface of the lens is the surface of the lens toward the image surface. The curvature radius of the surface at the optical axis can be positive, which can be that only the curvature radius of the surface at the optical axis is positive, or the curvature radius of the entire surface is positive. The curvature radius of the surface can be negative, which can be that only the curvature radius of the surface at the optical axis is negative, or the curvature radius of the entire surface is negative.

[0081] Among the plurality of object-side surfaces of the first lens 110, the second lens 120, the third lens 130, the fourth lens 140, the fifth lens 150 and the sixth lens 160 and the plurality of image-side surfaces of the first lens 110, the second lens 120, the third lens 130, the fourth lens 140, the fifth lens 150 and the sixth lens 160, all the surfaces can be spherical surfaces, all the surfaces can also be aspherical surfaces, and all the surfaces can also be partially spherical and partially aspherical. The surface being aspherical can mean that the entire surface is aspherical. The surface being aspherical can also mean that part of the surface is aspherical; for example, the part close to the optical axis can be aspherical. In order to better correct aberration and improve imaging quality, the plurality of object-side surfaces of the first lens 110, the second lens 120, the third lens 130, the fourth lens 140, the fifth lens 150 and the sixth lens 160 and the plurality of image-side surfaces of the first lens 110, the second lens 120, the third lens 130, the fourth lens 140, the fifth lens 150 and the sixth lens 160 are preferably aspherical.

[0082] Since plastic has low cost, convenient processing and is easy to make aspherical surfaces, the first lens 110, the second lens 120, the third lens 130, the fourth lens 140, the fifth lens 150 and the sixth lens 160 can all be made of plastic material. Of course, in order to improve the imaging quality, the first lens 110, the second lens 120, the third lens 130, the fourth lens 140 and the fifth lens 150 can also be partially or entirely made of glass material, which has strong adaptability to the environment and a wide temperature range, and can ensure the imaging quality.

[0083] In order to reduce stray light and improve imaging effect, the optical lens group can also include a stop. The stop can be an aperture stop and / or a field stop. The stop can be located between the object plane and the image plane. For example, the stop can be located between the object-side surface of the first lens 110 and the object plane, between the image-side surface of the first lens 110 and the object-side surface of the second lens 120, between the image-side surface of the second lens 120 and the object-side surface of the third lens 130, between the image-side surface of the third lens 130 and the object-side surface of the fourth lens 140, between the image-side surface of the fourth lens 140 and the object-side surface of the fifth lens 150, between the image-side surface of the fifth lens 150 and the object-side surface of the sixth lens 160, or between the image-side surface of the sixth lens 160 and the image plane. In order to reduce the processing cost, the stop can also be arranged on any one of the object-side surface of the first lens 110, the object-side surface of the second lens 120, the object-side surface of the third lens 130, the object-side surface of the fourth lens 140, the object-side surface of the fifth lens 150, the object-side surface of the sixth lens 160, the image-side surface of the first lens 110, the image-side surface of the second lens 120, the image-side surface of the third lens 130, the image-side surface of the fourth lens 140, the image-side surface of the fifth lens 150 and the image-side surface of the sixth lens 160.

[0084] In order to realize the filtering of the non-working waveband, the optical lens set can further comprise a filter element. The filter element can be a filter located between the object plane and the image plane. The filter can be located between the object side of the first lens 110 and the object plane, between the image side of the first lens 110 and the object side of the second lens 120, between the image side of the second lens 120 and the object side of the third lens 130, between the image side of the third lens 130 and the object side of the fourth lens 140, between the image side of the fourth lens 140 and the object side of the fifth lens 150, between the image side of the fifth lens 150 and the object side of the sixth lens 160, or between the image side of the sixth lens 160 and the image plane. In order to reduce the production cost, the filter element can also be a filter film coated on any one of the object side of the first lens 110, the object side of the second lens 120, the object side of the third lens 130, the object side of the fourth lens 140, the object side of the fifth lens 150, the object side of the sixth lens 160, the image side of the first lens 110, the image side of the second lens 120, the image side of the third lens 130, the image side of the fourth lens 140, the image side of the fifth lens 150, and the image side of the sixth lens 160.

[0085] The optical lens set of the embodiments of the present application has the characteristics of wide field of view, clear and bright imaging effect, and miniaturization, and has a wide application prospect. The optical lens set of the embodiments of the present application is particularly suitable for smart phones, mobile phones, PDAs (Personal Digital Assistant), game consoles, PC information terminal devices, and household appliances with camera functions, and the like.

[0086] The imaging optical lens set will be described in detail below in combination with specific parameters. Specific Embodiment One

[0088] The structural schematic diagram of the imaging optical lens set of the embodiments of the present application is shown in FIG. 1. Figure 1The optical lens assembly includes a first lens 110, an aperture stop (not shown), a second lens 120, a third lens 130, a fourth lens 140, a fifth lens 150, a sixth lens 160, and an infrared filter 170, arranged sequentially along the optical axis from the object plane to the image plane. The first lens 110 has negative refractive power, with a positive radius of curvature on its object-side surface along the optical axis, a positive radius of curvature on its object-side surface along the circumference, and a positive radius of curvature on its image-side surface along both the optical axis and the circumference. The second lens 120 has positive refractive power, with a positive radius of curvature on its object-side surface along the optical axis and the circumference, and a negative radius of curvature on its image-side surface along both the optical axis and the circumference. The third lens 130 has negative refractive power. Its object-side surface has a positive radius of curvature along the optical axis and a negative radius of curvature along the circumference. The image-side surface has a positive radius of curvature along the optical axis and a positive radius of curvature along the circumference. The fourth lens 140 has negative refractive power. Its object-side surface has a positive radius of curvature along the optical axis and a positive radius of curvature along the circumference. The image-side surface has a positive radius of curvature along the optical axis and a negative radius of curvature along the circumference. The fifth lens 150 has positive refractive power. Its object-side surface has a positive radius of curvature along the optical axis and a negative radius of curvature along the circumference. The image-side surface has a negative radius of curvature along the optical axis and a negative radius of curvature along the circumference. The sixth lens 160 has negative refractive power. Its object-side surface has a positive radius of curvature along the optical axis and a negative radius of curvature along the circumference. The image-side surface has a positive radius of curvature along the optical axis and a negative radius of curvature along the circumference.

[0089] In this embodiment of the application, with light of wavelength 587.5618nm as a reference, the relevant parameters of the optical lens group are shown in Table 1. In Table 1, f is the focal length of the optical lens group, FNO represents the aperture number, ω represents half of the field of view in the diagonal direction of the optical lens group, and TTL is the distance on the optical axis from the object side surface of the first lens 110 to the image surface. The units of focal length, radius of curvature and thickness are all millimeters.

[0090] Table 1

[0091]

[0092] The surface of the lens in an optical lens assembly may be aspherical. For these aspherical surfaces, the equation for the aspherical surface is:

[0093]

[0094] Where Z represents the height of the lens surface parallel to the Z-axis, r represents the radial distance from the vertex, c represents the curvature of the surface at the vertex, K represents the conic constant, and A4, A6, A8, A 10 A 12 A 14, A 16 , A 18 , A 20 respectively represent 4th order, 6th order, 8th order, 10th order, 12th order, 14th order, 16th order, 18th order, 20th order corresponding order of aspherical surface coefficients. In the embodiment of the present application, the object side surface of the six lenses is aspherical surface, and the image side surface of the six lenses is aspherical surface. The corresponding conic constant K and aspherical surface coefficients of these aspherical surfaces are shown in Table 2:

[0095] Table 2

[0096]

[0097]

[0098] Figure 2 In the embodiment of the present application, the longitudinal spherical aberration curve of the light with wavelength of 486.1327nm, 587.5618nm and 656.2725nm is shown in Fig. 2a, Fig. 2b and Fig. 2c respectively. Figure 2 It can be seen from Fig. 2a, Fig. 2b and Fig. 2c that the corresponding longitudinal spherical aberration is within 0.025mm, which indicates that the imaging quality of the embodiment of the present application is good.

[0099] Figure 2 In the embodiment of the present application, the astigmatism curve is shown in Fig. 3a, Fig. 3b and Fig. 3c respectively. Figure 2 It can be seen from Fig. 3a, Fig. 3b and Fig. 3c that the astigmatism is within 0.100mm, which indicates that the astigmatism is well compensated. Figure 2 In the embodiment of the present application, the distortion curve is shown in Fig. 4a, Fig. 4b and Fig. 4c respectively. Figure 2 It can be seen from Fig. 4a, Fig. 4b and Fig. 4c that the distortion is well corrected. Specific embodiment two

[0101] The structure diagram of the imaging optical lens group of the embodiment of the present application is shown in Fig. 5. Figure 3The optical lens assembly includes a first lens 110, an aperture stop (not shown), a second lens 120, a third lens 130, a fourth lens 140, a fifth lens 150, a sixth lens 160, and an infrared filter 170, arranged sequentially along the optical axis from the object plane to the image plane. The first lens 110 has negative refractive power, with a positive radius of curvature on its object-side surface along the optical axis, a positive radius of curvature on its object-side surface along the circumference, and a positive radius of curvature on its image-side surface along both the optical axis and the circumference. The second lens 120 has positive refractive power, with a positive radius of curvature on its object-side surface along the optical axis and the circumference, and a negative radius of curvature on its image-side surface along both the optical axis and the circumference. The third lens 130 has negative refractive power. Its object-side surface has a negative radius of curvature along the optical axis and a negative radius of curvature along the circumference. Its image-side surface has a positive radius of curvature along the optical axis and a positive radius of curvature along the circumference. The fourth lens 140 has negative refractive power. Its object-side surface has a positive radius of curvature along the optical axis and a positive radius of curvature along the circumference. Its image-side surface has a positive radius of curvature along the optical axis and a negative radius of curvature along the circumference. The fifth lens 150 has positive refractive power. Its object-side surface has a positive radius of curvature along the optical axis and a negative radius of curvature along the circumference. Its image-side surface has a negative radius of curvature along the optical axis and a negative radius of curvature along the circumference. The sixth lens 160 has negative refractive power. Its object-side surface has a positive radius of curvature along the optical axis and a negative radius of curvature along the circumference. Its image-side surface has a positive radius of curvature along the optical axis and a negative radius of curvature along the circumference.

[0102] In this embodiment of the application, with light of wavelength 587.5618nm as a reference, the relevant parameters of the optical lens group are shown in Table 3. In Table 3, f is the focal length of the optical lens group, FNO represents the aperture number, ω represents half of the field of view in the diagonal direction of the optical lens group, and TTL is the distance on the optical axis from the object side surface of the first lens 110 to the image surface. The units of focal length, radius of curvature and thickness are all millimeters.

[0103] Table 3

[0104]

[0105]

[0106] In this embodiment, the object-side surfaces of all six lenses are aspherical, and the image-side surfaces of all six lenses are aspherical. The conic constant K and aspherical coefficients corresponding to these aspherical surfaces are shown in Table 4.

[0107] Table 4

[0108] Page number S1 S2 S3 S4 S5 S6 K 9.9000E+01 1.9884E+00 -9.3187E+00 -4.8084E-01 -6.5958E+01 -3.9250E+00 A4 2.9870E-01 4.4361E-01 -1.6302E-02 -2.0246E-01 -3.0621E-01 -2.6198E-01 A6 -3.5476E-01 -2.0783E-01 4.2741E-01 3.7490E-01 3.8575E-01 4.5714E-01 A8 5.8054E-01 -6.3107E-01 -6.0915E+00 -1.7079E+00 -1.8293E-01 -3.9423E-01 A10 -8.0219E-01 8.6908E+00 4.5438E+01 6.0665E+00 -1.9702E+00 -2.3910E-01 A12 8.6374E-01 -3.5292E+01 -2.1845E+02 -1.7474E+01 6.8521E+00 1.0509E+00 A14 -6.6813E-01 8.6515E+01 6.7182E+02 3.4709E+01 -1.1547E+01 -1.2619E+00 A16 3.4104E-01 -1.2786E+02 -1.2867E+03 -4.3860E+01 1.0886E+01 7.8778E-01 A18 -1.0236E-01 1.0553E+02 1.3955E+03 3.1427E+01 -5.4066E+00 -2.5737E-01 A20 1.3503E-02 -3.6717E+01 -6.5593E+02 -9.7827E+00 1.1002E+00 3.4725E-02 Page number S7 S8 S9 S10 S11 S12 K 2.2153E+00 -4.7374E+00 -7.8203E+00 -2.3241E+00 -2.2895E+00 -1.4621E+00 A4 -1.9564E-01 -1.0940E-01 2.0334E-01 2.3598E-01 -5.8642E-02 -4.2977E-01 A6 1.9115E-01 -2.9723E-01 -4.5666E-01 -3.7043E-01 -3.7504E-01 3.2045E-01 A8 2.3186E-01 7.1952E-01 7.0211E-01 7.1313E-01 6.0138E-01 -1.7243E-01 A10 -9.3996E-01 -1.1337E+00 -7.2617E-01 -7.8813E-01 -5.4013E-01 6.4421E-02 A12 1.2671E+00 1.1878E+00 4.8808E-01 5.0834E-01 2.9951E-01 -1.6245E-02 A14 -9.3316E-01 -7.9592E-01 -2.1231E-01 -2.0123E-01 -1.0259E-01 2.7017E-03 A16 3.9670E-01 3.2510E-01 5.6794E-02 4.8350E-02 2.1114E-02 -2.8380E-04 A18 -9.0656E-02 -7.2452E-02 -8.3644E-03 -6.4688E-03 -2.3912E-03 1.7085E-05 A20 8.4742E-03 6.6507E-03 5.1429E-04 3.6916E-04 1.1426E-04 -4.5062E-07

[0109] Figure 4The longitudinal spherical aberration curves of the embodiment of the present application at wavelengths of 486.1327 nm, 587.5618 nm and 656.2725 nm are shown in Fig. 1, Fig. 2 and Fig. 3 respectively. Figure 4 As can be seen from Fig. 1, Fig. 2 and Fig. 3, the corresponding longitudinal spherical aberrations are all within 0.025 mm, which indicates that the imaging quality of the embodiment of the present application is good.

[0110] Figure 4 The astigmatism curves of the embodiment of the present application are shown in Fig. 4, Fig. 5 and Fig. 6 respectively. Figure 4 As can be seen from Fig. 4, Fig. 5 and Fig. 6, the astigmatism is within 0.100 mm, and good compensation is obtained. Figure 4 The distortion curves of the embodiment of the present application are shown in Fig. 7, Fig. 8 and Fig. 9 respectively. Figure 4 As can be seen from Fig. 7, Fig. 8 and Fig. 9, the distortion is well corrected. Specific Embodiment Three

[0112] The structural schematic diagram of the optical lens assembly for imaging of the embodiment of the present application is shown in Fig. 10. Figure 5 The optical lens assembly comprises, in order from the object plane to the image plane along the optical axis, a first lens 110, a diaphragm (not shown in the figure), a second lens 120, a third lens 130, a fourth lens 140, a fifth lens 150, a sixth lens 160 and an infrared filter 170. The first lens 110 has negative refractive power, the radius of curvature of the object side surface thereof at the optical axis is positive, the radius of curvature of the object side surface thereof at the circumference is positive, the radius of curvature of the image side surface thereof at the optical axis is positive, and the radius of curvature of the image side surface thereof at the circumference is positive. The second lens 120 has positive refractive power, the radius of curvature of the object side surface thereof at the optical axis is positive, the radius of curvature of the object side surface thereof at the circumference is positive, the radius of curvature of the image side surface thereof at the optical axis is negative, and the radius of curvature of the image side surface thereof at the circumference is negative. The third lens 130 has negative refractive power, the radius of curvature of the object side surface thereof at the optical axis is negative, the radius of curvature of the object side surface thereof at the circumference is negative, the radius of curvature of the image side surface thereof at the optical axis is positive, and the radius of curvature of the image side surface thereof at the circumference is negative. The fourth lens 140 has negative refractive power, the radius of curvature of the object side surface thereof at the optical axis is negative, the radius of curvature of the object side surface thereof at the circumference is negative, the radius of curvature of the image side surface thereof at the optical axis is positive, and the radius of curvature of the image side surface thereof at the circumference is negative. The fifth lens 150 has positive refractive power, the radius of curvature of the object side surface thereof at the optical axis is positive, the radius of curvature of the object side surface thereof at the circumference is negative, the radius of curvature of the image side surface thereof at the optical axis is negative, and the radius of curvature of the image side surface thereof at the circumference is negative. The sixth lens 160 has negative refractive power, the radius of curvature of the object side surface thereof at the optical axis is positive, the radius of curvature of the object side surface thereof at the circumference is negative, the radius of curvature of the image side surface thereof at the optical axis is positive, and the radius of curvature of the image side surface thereof at the circumference is negative.

[0113] In the embodiment of the present application, the optical parameters of the optical lens set are shown in Table 5, in which f is the focal length of the optical lens set, FNO represents the aperture number, ω represents half of the diagonal field angle of the optical lens set, and TTL is the distance from the object side of the first lens 110 to the image plane on the optical axis. The units of the focal length, the radius of curvature and the thickness are all millimeters.

[0114] Table 5

[0115]

[0116]

[0117] In the embodiment of the present application, the object side of each of the six lenses is aspherical, and the image side of each of the six lenses is aspherical. The conic constant K and the aspherical coefficients of the aspherical surfaces are shown in Table 6.

[0118] Table 6

[0119] Page number S1 S2 S3 S4 S5 S6 K 9.8076E+01 1.9657E+00 -9.4907E+00 -6.0057E-01 -6.7222E+00 -4.6800E+00 A4 3.0068E-01 4.8072E-01 -8.6880E-03 -2.3981E-01 -3.6701E-01 -2.4546E-01 A6 -4.3300E-01 -6.1162E-01 2.6535E-01 7.5233E-01 5.6979E-01 3.8927E-01 A8 8.9766E-01 9.2568E-01 -4.1338E+00 -3.3012E+00 -1.8571E-02 -9.5183E-02 A10 -1.4167E+00 9.8664E+00 3.0321E+01 1.1085E+01 -3.6717E+00 -1.0472E+00 A12 1.5485E+00 -6.5087E+01 -1.4182E+02 -3.0196E+01 9.5365E+00 2.2660E+00 A14 -1.1166E+00 1.9145E+02 4.1932E+02 5.7775E+01 -1.1756E+01 -2.3439E+00 A16 5.0728E-01 -3.0419E+02 -7.6921E+02 -7.0094E+01 7.5462E+00 1.3693E+00 A18 -1.3178E-01 2.5490E+02 7.9797E+02 4.7730E+01 -2.2273E+00 -4.3641E-01 A20 1.4685E-02 -8.8020E+01 -3.6066E+02 -1.3952E+01 1.9767E-01 5.9681E-02 Page number S7 S8 S9 S10 S11 S12 K -9.9000E+01 -3.5176E+00 -7.9968E+00 -2.5961E+00 -2.2310E+00 -1.4803E+00 A4 -5.9600E-02 -8.2038E-02 1.5588E-01 1.9626E-01 -5.5772E-02 -4.8141E-01 A6 -6.3166E-02 -3.8582E-01 -2.3018E-01 1.1058E-02 -2.9431E-01 3.5547E-01 A8 5.2435E-01 7.5165E-01 2.1159E-01 -8.6696E-02 3.6605E-01 -1.9889E-01 A10 -1.0880E+00 -8.9675E-01 -1.0854E-01 5.5407E-02 -2.4962E-01 8.0758E-02 A12 1.1547E+00 7.2351E-01 6.9894E-03 -2.5305E-02 1.0408E-01 -2.2990E-02 A14 -7.0149E-01 -3.8864E-01 2.0789E-02 9.1426E-03 -2.6044E-02 4.4760E-03 A16 2.4644E-01 1.3057E-01 -1.0953E-02 -2.1015E-03 3.7401E-03 -5.6564E-04 A18 -4.6629E-02 -2.3501E-02 2.3755E-03 2.5323E-04 -2.7613E-04 4.1523E-05 A20 3.6803E-03 1.5877E-03 -1.9658E-04 -1.1869E-05 7.6403E-06 -1.3362E-06

[0120] Figure 6 Fig. 6a is a longitudinal spherical aberration curve of the embodiment of the present application at wavelengths of 486.1327 nm, 587.5618 nm and 656.2725 nm, and Fig. 6b is a lateral chromatic aberration curve of the embodiment of the present application at wavelengths of 486.1327 nm, 587.5618 nm and 656.2725 nm. Figure 6 As shown in Fig. 6a, the corresponding longitudinal spherical aberrations are all within 0.05 mm, which indicates that the imaging quality of the embodiment of the present application is good.

[0121] Figure 6 Fig. 7a is a lateral chromatic aberration curve of the embodiment of the present application, and Fig. 7b is a distortion curve of the embodiment of the present application. Figure 6 As shown in Fig. 7a, the lateral chromatic aberration is within 0.25 mm, and good compensation is obtained. Figure 6 Fig. 7c is a distortion curve of the embodiment of the present application. Figure 6 As shown in Fig. 7c, the distortion is also well corrected. Specific Embodiment Four

[0123] The structural schematic diagram of the imaging optical lens set of the embodiment of the present application is shown in Fig. 8. Figure 7The optical lens assembly includes, in sequence from the object plane to the image plane along the optical axis, a first lens 110, a diaphragm (not shown in the figure), a second lens 120, a third lens 130, a fourth lens 140, a fifth lens 150, a sixth lens 160, and an infrared filter 170. The first lens 110 has negative refractive power, the radius of curvature of the object-side surface at the optical axis is positive, the radius of curvature of the object-side surface at the periphery is positive, the radius of curvature of the image-side surface at the optical axis is positive, and the radius of curvature of the image-side surface at the periphery is positive. The second lens 120 has positive refractive power, the radius of curvature of the object-side surface at the optical axis is positive, the radius of curvature of the object-side surface at the periphery is positive, the radius of curvature of the image-side surface at the optical axis is negative, and the radius of curvature of the image-side surface at the periphery is negative. The third lens 130 has negative refractive power, the radius of curvature of the object-side surface at the optical axis is negative, the radius of curvature of the object-side surface at the periphery is negative, the radius of curvature of the image-side surface at the optical axis is positive, and the radius of curvature of the image-side surface at the periphery is positive. The fourth lens 140 has negative refractive power, the radius of curvature of the object-side surface at the optical axis is positive, the radius of curvature of the object-side surface at the periphery is positive, the radius of curvature of the image-side surface at the optical axis is positive, and the radius of curvature of the image-side surface at the periphery is negative. The fifth lens 150 has positive refractive power, the radius of curvature of the object-side surface at the optical axis is positive, the radius of curvature of the object-side surface at the periphery is negative, the radius of curvature of the image-side surface at the optical axis is negative, and the radius of curvature of the image-side surface at the periphery is negative. The sixth lens 160 has negative refractive power, the radius of curvature of the object-side surface at the optical axis is positive, the radius of curvature of the object-side surface at the periphery is negative, the radius of curvature of the image-side surface at the optical axis is positive, and the radius of curvature of the image-side surface at the periphery is negative.

[0124] In the embodiments of the present application, with the light of wavelength 587.5618 nm as the reference, the related parameters of the optical lens assembly are shown in Table 7, where f is the focal length of the optical lens assembly, FNO represents the aperture number, ω represents half of the field angle in the diagonal direction of the optical lens assembly, and TTL is the distance from the object-side surface of the first lens 110 to the image plane on the optical axis. The units of the focal length, the radius of curvature, and the thickness are all millimeters.

[0125] Table 7

[0126]

[0127] In the embodiments of the present application, the object-side surfaces of the six lenses are all aspheric surfaces, and the image-side surfaces of the six lenses are all aspheric surfaces. The conic constants K and the aspheric coefficients of these aspheric surfaces are shown in Table 8.

[0128] Table 8

[0129]

[0130]

[0131] Figure 8The longitudinal spherical aberration curves of the embodiment of the present application at wavelengths of 486.1327 nm, 587.5618 nm and 656.2725 nm are shown in Fig. 1a, Fig. 1b and Fig. 1c respectively. Figure 8 As can be seen from Fig. 1a, Fig. 1b and Fig. 1c, the corresponding longitudinal spherical aberrations are all within 0.025 mm, which indicates that the imaging quality of the embodiment of the present application is good.

[0132] Figure 8 The astigmatism curves of the embodiment of the present application are shown in Fig. 2a, Fig. 2b and Fig. 2c respectively. Figure 8 As can be seen from Fig. 2a, Fig. 2b and Fig. 2c, the astigmatism is within 0.1 mm, which indicates that good compensation is obtained. Figure 8 The distortion curves of the embodiment of the present application are shown in Fig. 3a, Fig. 3b and Fig. 3c respectively. Figure 8 As can be seen from Fig. 3a, Fig. 3b and Fig. 3c, the distortion is well corrected. Specific Embodiment Five

[0134] The structural schematic diagram of the optical lens assembly for imaging of the embodiment of the present application is shown in Fig. 4. Figure 9 The optical lens assembly comprises, in order from the object plane to the image plane along the optical axis, a first lens 110, a diaphragm (not shown in the figure), a second lens 120, a third lens 130, a fourth lens 140, a fifth lens 150, a sixth lens 160 and an infrared filter 170. The first lens 110 has negative refractive power, the radius of curvature of the object side surface thereof at the optical axis is positive, the radius of curvature of the object side surface thereof at the periphery is positive, the radius of curvature of the image side surface thereof at the optical axis is positive, and the radius of curvature of the image side surface thereof at the periphery is positive. The second lens 120 has positive refractive power, the radius of curvature of the object side surface thereof at the optical axis is positive, the radius of curvature of the object side surface thereof at the periphery is positive, the radius of curvature of the image side surface thereof at the optical axis is negative, and the radius of curvature of the image side surface thereof at the periphery is negative. The third lens 130 has negative refractive power, the radius of curvature of the object side surface thereof at the optical axis is negative, the radius of curvature of the object side surface thereof at the periphery is negative, the radius of curvature of the image side surface thereof at the optical axis is positive, and the radius of curvature of the image side surface thereof at the periphery is positive. The fourth lens 140 has positive refractive power, the radius of curvature of the object side surface thereof at the optical axis is positive, the radius of curvature of the object side surface thereof at the periphery is positive, the radius of curvature of the image side surface thereof at the optical axis is positive, and the radius of curvature of the image side surface thereof at the periphery is negative. The fifth lens 150 has positive refractive power, the radius of curvature of the object side surface thereof at the optical axis is positive, the radius of curvature of the object side surface thereof at the periphery is negative, the radius of curvature of the image side surface thereof at the optical axis is negative, and the radius of curvature of the image side surface thereof at the periphery is negative. The sixth lens 160 has negative refractive power, the radius of curvature of the object side surface thereof at the optical axis is positive, the radius of curvature of the object side surface thereof at the periphery is negative, the radius of curvature of the image side surface thereof at the optical axis is positive, and the radius of curvature of the image side surface thereof at the periphery is negative.

[0135] In the embodiment of the present application, the optical parameters of the optical lens set are shown in Table 9, where f is the focal length of the optical lens set, FNO represents the aperture number, ω represents half of the diagonal field angle of the optical lens set, and TTL is the distance from the object side of the first lens 110 to the image plane on the optical axis. The units of the focal length, the radius of curvature and the thickness are all millimeters.

[0136] Table 9

[0137]

[0138] In the embodiment of the present application, the object side of each of the six lenses is aspherical, and the image side of each of the six lenses is aspherical. The conic constant K and the aspherical coefficients of the aspherical surfaces are shown in Table 10:

[0139] Table 10

[0140] Page number S1 S2 S3 S4 S5 S6 K 9.8356E+01 2.1554E+00 -1.1363E+01 -7.3871E-01 -9.9000E+01 -3.8679E+00 A4 3.3198E-01 4.1682E-01 -2.0152E-02 -1.8227E-01 -2.8638E-01 -3.0304E-01 A6 -4.8662E-01 4.3827E-01 5.2974E-01 6.9898E-01 2.7691E-01 6.6728E-01 A8 1.0427E+00 -7.0871E+00 -8.0160E+00 -5.2328E+00 7.3986E-01 -9.2860E-01 A10 -1.8455E+00 4.7447E+01 6.4222E+01 2.3263E+01 -7.0010E+00 5.5966E-01 A12 2.3527E+00 -1.8183E+02 -3.2735E+02 -6.7234E+01 2.1227E+01 2.8353E-01 A14 -2.0041E+00 4.3573E+02 1.0544E+03 1.2415E+02 -3.4758E+01 -7.3907E-01 A16 1.0676E+00 -6.3534E+02 -2.0863E+03 -1.4168E+02 3.2388E+01 5.1955E-01 A18 -3.2037E-01 5.1503E+02 2.3094E+03 9.0998E+01 -1.6058E+01 -1.6346E-01 A20 4.1073E-02 -1.7711E+02 -1.0960E+03 -2.5263E+01 3.2815E+00 1.9055E-02 Page number S7 S8 S9 S10 S11 S12 K 7.8798E-01 1.0678E+01 3.9540E+00 -2.6920E+00 -2.0104E+00 -1.4611E+00 A4 -2.3675E-01 -6.2438E-02 2.2092E-01 2.3370E-01 -4.2524E-02 -3.4627E-01 A6 3.8598E-01 -3.7702E-01 -4.2151E-01 -3.0413E-01 -2.7336E-01 2.0097E-01 A8 -4.1109E-01 8.8128E-01 6.0120E-01 4.9602E-01 3.6070E-01 -6.9368E-02 A10 4.2844E-01 -1.4304E+00 -6.1175E-01 -4.7017E-01 -2.4908E-01 1.0496E-02 A12 -6.1616E-01 1.5888E+00 4.1373E-01 2.5576E-01 1.0571E-01 1.2351E-03 A14 7.2998E-01 -1.1461E+00 -1.8277E-01 -8.4305E-02 -2.8043E-02 -8.3674E-04 A16 -5.1104E-01 5.0691E-01 4.9496E-02 1.6746E-02 4.5137E-03 1.5087E-04 A18 1.8717E-01 -1.2301E-01 -7.2939E-03 -1.8448E-03 -4.0213E-04 -1.2494E-05 A20 -2.7898E-02 1.2424E-02 4.4134E-04 8.6473E-05 1.5184E-05 4.0356E-07

[0141] Figure 10 Fig. 6a is a longitudinal spherical aberration curve of the embodiment of the present application at wavelengths of 486.1327 nm, 587.5618 nm and 656.2725 nm, where a is the longitudinal spherical aberration curve of the embodiment of the present application at wavelengths of 486.1327 nm, 587.5618 nm and 656.2725 nm. Figure 10 As shown in Fig. 6a, the corresponding longitudinal spherical aberration is within 0.025 mm, which indicates that the imaging quality of the embodiment of the present application is good.

[0142] Figure 10 Fig. 6b is an astigmatism curve of the embodiment of the present application, where b is the astigmatism curve of the embodiment of the present application. Figure 10 As shown in Fig. 6b, the astigmatism is within 0.25 mm, which is well compensated. Figure 10 Fig. 6c is a distortion curve of the embodiment of the present application, where c is the distortion curve of the embodiment of the present application. Figure 10 As shown in Fig. 6c, the distortion is well corrected. Specific Embodiment Six

[0144] The structural schematic diagram of the imaging optical lens set of the embodiment of the present application is shown in Fig. 1. Figure 11The optical lens assembly includes, in sequence from an object plane to an image plane along an optical axis, a first lens 110, a diaphragm (not shown in the figure), a second lens 120, a third lens 130, a fourth lens 140, a fifth lens 150, a sixth lens 160, and an infrared filter 170. The first lens 110 has negative refractive power, the radius of curvature of the object-side surface at the optical axis is positive, the radius of curvature of the object-side surface at the periphery is positive, the radius of curvature of the image-side surface at the optical axis is positive, and the radius of curvature of the image-side surface at the periphery is positive. The second lens 120 has positive refractive power, the radius of curvature of the object-side surface at the optical axis is positive, the radius of curvature of the object-side surface at the periphery is positive, the radius of curvature of the image-side surface at the optical axis is negative, and the radius of curvature of the image-side surface at the periphery is negative. The third lens 130 has negative refractive power, the radius of curvature of the object-side surface at the optical axis is negative, the radius of curvature of the object-side surface at the periphery is negative, the radius of curvature of the image-side surface at the optical axis is positive, and the radius of curvature of the image-side surface at the periphery is negative. The fourth lens 140 has positive refractive power, the radius of curvature of the object-side surface at the optical axis is positive, the radius of curvature of the object-side surface at the periphery is negative, the radius of curvature of the image-side surface at the optical axis is negative, and the radius of curvature of the image-side surface at the periphery is negative. The fifth lens 150 has positive refractive power, the radius of curvature of the object-side surface at the optical axis is positive, the radius of curvature of the object-side surface at the periphery is negative, the radius of curvature of the image-side surface at the optical axis is negative, and the radius of curvature of the image-side surface at the periphery is negative. The sixth lens 160 has negative refractive power, the radius of curvature of the object-side surface at the optical axis is positive, the radius of curvature of the object-side surface at the periphery is negative, the radius of curvature of the image-side surface at the optical axis is positive, and the radius of curvature of the image-side surface at the periphery is negative.

[0145] In the embodiments of the present application, with the light of wavelength 587.5618 nm as reference, the related parameters of the optical lens assembly are shown in Table 11, in which f is the focal length of the optical lens assembly, FNO represents the aperture number, ω represents half of the field angle in the diagonal direction of the optical lens assembly, and TTL is the distance from the object-side surface of the first lens 110 to the image plane on the optical axis; the units of the focal length, the radius of curvature, and the thickness are all millimeters.

[0146] Table 11

[0147]

[0148]

[0149] In the embodiments of the present application, the object-side surfaces of the six lenses are all aspheric surfaces, and the image-side surfaces of the six lenses are all aspheric surfaces. The conic constants K and the aspheric coefficients of these aspheric surfaces are shown in Table 12.

[0150] Table 12

[0151] Page number S1 S2 S3 S4 S5 S6 K 9.8986E+01 2.1510E+00 -1.0276E+01 -4.8210E-01 -9.7559E+01 -3.9644E+00 A4 2.7487E-01 4.1776E-01 -9.6360E-03 -2.2634E-01 -2.9040E-01 -2.5089E-01 A6 -3.4982E-01 6.6612E-02 3.6432E-01 8.8876E-01 2.6403E-01 2.3704E-01 A8 6.3082E-01 -4.9512E+00 -5.9110E+00 -5.5181E+00 1.0817E+00 4.4308E-01 A10 -9.1116E-01 4.2063E+01 4.6003E+01 2.2819E+01 -7.6350E+00 -1.7841E+00 A12 9.2848E-01 -1.8027E+02 -2.2238E+02 -6.4963E+01 2.0366E+01 2.6600E+00 A14 -6.2024E-01 4.5968E+02 6.7108E+02 1.2077E+02 -3.0686E+01 -2.2205E+00 A16 2.5422E-01 -6.9262E+02 -1.2447E+03 -1.3961E+02 2.7064E+01 1.0840E+00 A18 -5.7538E-02 5.7042E+02 1.3000E+03 9.0836E+01 -1.2931E+01 -2.8774E-01 A20 5.4078E-03 -1.9744E+02 -5.8863E+02 -2.5498E+01 2.5815E+00 3.1865E-02 Page number S7 S8 S9 S10 S11 S12 K 1.1544E+00 -8.2040E+01 1.1847E+01 -2.6039E+00 -2.0876E+00 -1.4274E+00 A4 -1.6385E-01 -1.1433E-01 1.6723E-01 2.2514E-01 -4.6271E-02 -4.0610E-01 A6 4.5571E-02 -5.7317E-02 -2.6767E-01 -3.0666E-01 -2.7752E-01 3.0046E-01 A8 3.5440E-01 -1.7138E-02 3.0315E-01 5.8623E-01 4.1082E-01 -1.5311E-01 A10 -5.2119E-01 8.6847E-02 -2.2720E-01 -6.3550E-01 -3.1287E-01 5.1944E-02 A12 9.0330E-02 -4.0558E-02 9.4556E-02 3.8836E-01 1.4160E-01 -1.1560E-02 A14 3.9245E-01 -1.7268E-02 -1.7578E-02 -1.4211E-01 -3.9118E-02 1.6509E-03 A16 -3.9842E-01 1.7581E-02 -1.3238E-03 3.1096E-02 6.4761E-03 -1.4419E-04 A18 1.6015E-01 -2.9811E-03 1.1474E-03 -3.7618E-03 -5.9079E-04 6.9321E-06 A20 -2.4377E-02 -1.9472E-04 -1.3927E-04 1.9384E-04 2.2840E-05 -1.3882E-07

[0152] Figure 12 In the longitudinal spherical aberration graph of the embodiment of the present application at wavelengths of 486.1327 nm, 587.5618 nm and 656.2725 nm, a is Figure 12 As can be seen from a, the corresponding longitudinal spherical aberration is within 0.025 mm, which indicates that the imaging quality of the embodiment of the present application is good.

[0153] Figure 12 In the astigmatism graph of the embodiment of the present application, b is Figure 12 As can be seen from b, the astigmatism is within 0.15 mm, and good compensation is obtained. Figure 12 In the distortion graph of the embodiment of the present application, c is Figure 12 As can be seen from c, the distortion is also well corrected. Specific Embodiment Seven

[0155] The structural schematic diagram of the imaging optical lens assembly of the embodiment of the present application is shown in FIG. 1. Figure 13 The optical lens assembly includes, in sequence along the optical axis from the object plane to the image plane, a first lens 110, a diaphragm (not shown in the figure), a second lens 120, a third lens 130, a fourth lens 140, a fifth lens 150, a sixth lens 160 and an infrared filter 170. The first lens 110 has negative refractive power, the radius of curvature of the object side surface at the optical axis is positive, the radius of curvature of the object side surface at the circumference is positive, the radius of curvature of the image side surface at the optical axis is positive, and the radius of curvature of the image side surface at the circumference is positive. The second lens 120 has positive refractive power, the radius of curvature of the object side surface at the optical axis is positive, the radius of curvature of the object side surface at the circumference is positive, the radius of curvature of the image side surface at the optical axis is negative, and the radius of curvature of the image side surface at the circumference is negative. The third lens 130 has negative refractive power, the radius of curvature of the object side surface at the optical axis is negative, the radius of curvature of the object side surface at the circumference is negative, the radius of curvature of the image side surface at the optical axis is positive, and the radius of curvature of the image side surface at the circumference is positive. The fourth lens 140 has positive refractive power, the radius of curvature of the object side surface at the optical axis is positive, the radius of curvature of the object side surface at the circumference is positive, the radius of curvature of the image side surface at the optical axis is positive, and the radius of curvature of the image side surface at the circumference is negative. The fifth lens 150 has positive refractive power, the radius of curvature of the object side surface at the optical axis is positive, the radius of curvature of the object side surface at the circumference is negative, the radius of curvature of the image side surface at the optical axis is negative, and the radius of curvature of the image side surface at the circumference is negative. The sixth lens 160 has negative refractive power, the radius of curvature of the object side surface at the optical axis is positive, the radius of curvature of the object side surface at the circumference is negative, the radius of curvature of the image side surface at the optical axis is positive, and the radius of curvature of the image side surface at the circumference is negative.

[0156] In the embodiment of the present application, the optical parameters of the optical lens set are shown in Table 13, where f is the focal length of the optical lens set, FNO represents the aperture number, ω represents half of the diagonal field angle of the optical lens set, TTL is the distance from the object side of the first lens 110 to the image plane on the optical axis; the units of the focal length, the radius of curvature and the thickness are all millimeters.

[0157] Table 13

[0158]

[0159] In the embodiment of the present application, the object side of each of the six lenses is aspherical, and the image side of each of the six lenses is aspherical. The conic constant K and the aspherical coefficients corresponding to the aspherical surfaces are shown in Table 14:

[0160] Table 14

[0161]

[0162]

[0163] Figure 14 In the embodiment of the present application, the longitudinal spherical aberration curves at wavelengths of 486.1327 nm, 587.5618 nm and 656.2725 nm are shown in FIG. 1, FIG. 2 and FIG. 3, respectively. Figure 14 As shown in FIG. 1, FIG. 2 and FIG. 3, the longitudinal spherical aberrations corresponding to the wavelengths of 486.1327 nm, 587.5618 nm and 656.2725 nm are all within 0.04 millimeters, which indicates that the imaging quality of the present application is good.

[0164] Figure 14 In the embodiment of the present application, the astigmatism curves are shown in FIG. 4, FIG. 5 and FIG. 6, respectively. Figure 14 As shown in FIG. 4, FIG. 5 and FIG. 6, the astigmatism is within 0.25 millimeters, which is well compensated. Figure 14 In the embodiment of the present application, the distortion curves are shown in FIG. 7, FIG. 8 and FIG. 9, respectively. Figure 14 As shown in FIG. 7, FIG. 8 and FIG. 9, the distortion is well corrected. Specific Embodiment Eight

[0166] The structural schematic diagram of the imaging optical lens set of the present application is shown in FIG. 10. Figure 15The optical lens assembly includes, in sequence from an object plane to an image plane along an optical axis, a first lens 110, a diaphragm (not shown in the figure), a second lens 120, a third lens 130, a fourth lens 140, a fifth lens 150, a sixth lens 160, and an infrared filter 170. The first lens 110 has negative refractive power, the radius of curvature of the object-side surface at the optical axis is positive, the radius of curvature of the object-side surface at the periphery is positive, the radius of curvature of the image-side surface at the optical axis is positive, and the radius of curvature of the image-side surface at the periphery is positive. The second lens 120 has positive refractive power, the radius of curvature of the object-side surface at the optical axis is positive, the radius of curvature of the object-side surface at the periphery is positive, the radius of curvature of the image-side surface at the optical axis is negative, and the radius of curvature of the image-side surface at the periphery is negative. The third lens 130 has negative refractive power, the radius of curvature of the object-side surface at the optical axis is negative, the radius of curvature of the object-side surface at the periphery is negative, the radius of curvature of the image-side surface at the optical axis is negative, and the radius of curvature of the image-side surface at the periphery is negative. The fourth lens 140 has negative refractive power, the radius of curvature of the object-side surface at the optical axis is negative, the radius of curvature of the object-side surface at the periphery is negative, the radius of curvature of the image-side surface at the optical axis is positive, and the radius of curvature of the image-side surface at the periphery is negative. The fifth lens 150 has positive refractive power, the radius of curvature of the object-side surface at the optical axis is positive, the radius of curvature of the object-side surface at the periphery is negative, the radius of curvature of the image-side surface at the optical axis is negative, and the radius of curvature of the image-side surface at the periphery is negative. The sixth lens 160 has negative refractive power, the radius of curvature of the object-side surface at the optical axis is positive, the radius of curvature of the object-side surface at the periphery is negative, the radius of curvature of the image-side surface at the optical axis is positive, and the radius of curvature of the image-side surface at the periphery is negative.

[0167] In the embodiments of the present application, with the light ray of wavelength 587.5618 nm as a reference, the related parameters of the optical lens assembly are shown in Table 15. In Table 15, f is the focal length of the optical lens assembly, FNO represents the aperture number, ω represents half of the field angle in the diagonal direction of the optical lens assembly, and TTL is the distance from the object-side surface of the first lens 110 to the image plane on the optical axis. The units of the focal length, the radius of curvature, and the thickness are all millimeters.

[0168] Table 15

[0169]

[0170] In the embodiments of the present application, the object-side surfaces of the six lenses are all aspheric surfaces, and the image-side surfaces of the six lenses are all aspheric surfaces. The conic constants K and the aspheric coefficients corresponding to the aspheric surfaces are shown in Table 16.

[0171] Table 16

[0172]

[0173]

[0174] Figure 16 In the longitudinal spherical aberration graph of the embodiment of the application at wavelengths of 486.1327 nm, 587.5618 nm and 656.2725 nm, a is Figure 16 As can be seen from a, the corresponding longitudinal spherical aberration is within 0.04 mm, which indicates that the imaging quality of the embodiment of the application is good.

[0175] Figure 16 In the astigmatism graph of the embodiment of the application, b is Figure 16 As can be seen from b, the astigmatism is within 0.1 mm, and good compensation is obtained. Figure 16 In the distortion graph of the embodiment of the application, c is Figure 16 As can be seen from c, the distortion is also well corrected.

[0176] The data of the above eight groups of embodiments are as follows:

[0177]

[0178] In a second aspect, the embodiment of the application provides a camera module. The camera module comprises the optical lens group and the image sensor. The optical lens group is used for receiving a light signal of an object, and the image sensor is arranged on an image side of the optical lens group and is used for receiving the light signal and converting the light signal into an image signal.

[0179] In a third aspect, the embodiment of the application provides an electronic device. The electronic device comprises the camera module and a housing, and the camera module can be arranged on the housing. The electronic device can be any device with the function of acquiring images. For example, the electronic device can be a smart phone, a wearable device, a computer device, a television, a vehicle, a camera, a monitoring device, etc. The camera module cooperates with the electronic device to realize image acquisition and reproduction of a target object.

[0180] In the description of the application, it should be understood that the terms "first", "second" and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. For those skilled in the art, the specific meanings of the above terms in the application can be understood according to the specific circumstances. In addition, in the description of the application, "multiple" means two or more, unless otherwise specified. "And / or", the association relationship between the associated objects, means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. The character " / " generally represents an "or" relationship between the associated objects before and after it.

[0181] The above disclosure is only the preferred embodiment of the application, and of course cannot limit the scope of the application. Therefore, equivalent changes made according to the claims of the application are still within the scope of the application.

Claims

1. An optical lens, characterized in that, consisting of a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens arranged in order from an object side to an image side along an optical axis; the first lens has a negative refractive power, a radius of curvature of an object side surface of the first lens at the optical axis is positive, and a radius of curvature of an image side surface of the first lens at the optical axis is positive; the second lens has a positive refractive power; the third lens has a negative refractive power; the fifth lens has a positive refractive power; the sixth lens has a negative refractive power; The distance from the object side of the first lens to the image side on the optical axis is The half of the image height corresponding to the maximum field angle of the optical lens assembly is , and satisfy the following conditional expression: 1.64≤ ； The optical conjugate number of the optical lens is , satisfies the following conditional expression: ； The maximum field angle of the optical lens set is , satisfies the following conditional expression: 112.7°≤FOV≤128.8°.

2. The optical mirror according to claim 1, wherein, The focal length of the optical lens set is , and satisfies the following conditional expression: 。 3. The optical mirror according to claim 1, wherein, a radius of curvature of an object side surface of the second lens at the optical axis is positive, and a radius of curvature of an image side surface of the second lens at the optical axis is negative.

4. The optical mirror according to claim 1, wherein, a radius of curvature of an object side surface of the fifth lens at the optical axis is positive, and a radius of curvature of an image side surface of the fifth lens at the optical axis is negative.

5. The optical mirror according to claim 1, wherein, a radius of curvature of an object side surface of the sixth lens at the optical axis is positive, and a radius of curvature of an image side surface of the sixth lens at the optical axis is positive.

6. The optical mirror according to claim 1, wherein, The focal length of the second lens is , the focal length of the optical lens group is , and satisfy the following conditional expression: 。 7. The optical mirror according to claim 1, wherein, The focal length of the first lens is , the focal length of the optical lens group is , and satisfy the following conditional expression: -0.471≥f / f1>-1.

8. The optical mirror according to claim 1, wherein, Half of the maximum field angle of view of the optical lens system is The radius of curvature of the image-side surface of the sixth lens at the optical axis is , and satisfies the following conditional expression: 。 9. The optical mirror according to claim 1, wherein, A minimum distance from an image-side surface of the sixth lens to the image plane on the optical axis is , satisfies the following conditional expression: 。 10. The optical mirror according to claim 1, wherein, An Abbe number of the third lens is , satisfies the following conditional expression: 。 11. A camera module, comprising: comprising: the optical lens assembly and the image sensor of any one of claims 1-10, wherein the image sensor is disposed on an image side of the optical lens assembly.

12. An electronic device, comprising: comprising: a housing; and the camera module of claim 11, wherein the camera module is disposed on the housing.

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