Optical lens

Abstract

The application provides an optical lens, which comprises six lenses in sequence from an object side to an imaging surface along an optical axis, and the six lenses comprise: a first lens with negative optical power; a second lens with positive optical power; a third lens with positive optical power, the object side surface and the image side surface of the third lens are both convex; a fourth lens with positive optical power, the object side surface of the fourth lens is convex; a fifth lens with negative optical power, the image side surface of the fifth lens is concave; and a sixth lens with negative optical power. The optical lens provided by the application improves the imaging quality of the optical lens, reduces aberration, and improves the imaging quality of the optical lens by optimizing the shape, optical power, thickness and spacing of each lens, so that the optical lens has one or more advantages such as small aperture, large image surface, miniaturization and long focal length.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of imaging lenses, in particular to an optical lens. BACKGROUND

[0002] In recent years, with the rapid development of automobile auxiliary driving technology, optical lenses are increasingly widely used in automobiles.

[0003] At present, higher requirements are put forward for the performance and structure of vehicle-mounted optical lenses for safety and other reasons. For example, due to the demand for updating iteration of the placement position of the lens, the installation position of the lens is limited, and the demand for miniaturization of the lens is increasingly intense. At the same time, the demand for large image surface and small aperture is also increasing, in order to realize high pixel requirements and improve the resolving power, seven, eight or more lens structures are usually selected, but this will seriously affect the miniaturization of the lens.

[0004] Therefore, how to make the optical lens realize large imaging size, small aperture, and long focal characteristics, so as to meet the performance requirements of vehicle-mounted applications, is the goal pursued by the lens in the field. SUMMARY

[0005] In view of the above problems, the purpose of the present application is to provide an optical lens with one or more advantages such as small aperture, large image surface, miniaturization, long focal characteristics, etc.

[0006] The present application provides an optical lens, which has a total of six lenses, and comprises, in order along the optical axis from the object side to the imaging surface:

[0007] a first lens with negative refractive power;

[0008] a second lens with positive refractive power;

[0009] a third lens with positive refractive power, both the object side surface and the image side surface of which are convex;

[0010] a fourth lens with positive refractive power, the object side surface of which is convex;

[0011] a fifth lens with negative refractive power, the image side surface of which is concave;

[0012] a sixth lens with negative refractive power.

[0013] Further preferably, the effective focal length f of the optical lens and the total optical length TTL satisfy: 1.6 < TTL / f < 2.5.

[0014] Further preferably, the effective focal length f of the optical lens, the maximum field of view FOV and the real image height IH corresponding to the maximum field of view satisfy: 0.95 < (IH / 2) / (f x Tan(FOV / 2)) < 1.05.

[0015] Further preferably, the effective focal length f of the optical lens and the real image height IH corresponding to the maximum field angle satisfy: 0.55 < IH / f < 0.7.

[0016] Further preferably, the effective focal length f of the optical lens and the optical back focal length BFL satisfy: 0.2 < BFL / f < 0.5.

[0017] Further preferably, the real image height IH corresponding to the maximum field angle, the total track length TTL of the optical lens and the maximum field angle FOV satisfy: 50.0 < 180° x TTL / (IH / 2) / (FOV / 2) < 80.0.

[0018] Further preferably, the sum of the central thicknesses of the first to sixth lenses ∑CT and the total track length TTL of the optical lens satisfy: 0.5 < ∑CT / TTL < 0.8.

[0019] Further preferably, the maximum field angle FOV of the optical lens, the real image height IH corresponding to the maximum field angle and the entrance pupil diameter D1 of the first lens satisfy: 3.0 < D1 / IH / tan(FOV / 2) < 4.0.

[0020] Further preferably, the focal length f1 of the first lens and the effective focal length f of the optical lens satisfy: f1 / f < -1.0.

[0021] Further preferably, the focal length f2 of the second lens and the effective focal length f of the optical lens satisfy: 0.9 < f2 / f.

[0022] Further preferably, the focal length f3 of the third lens and the effective focal length f of the optical lens satisfy: 0.9 < f3 / f < 1.9.

[0023] Further preferably, the focal length f4 of the fourth lens and the effective focal length f of the optical lens satisfy: 0.6 < f4 / f < 1.3.

[0024] Further preferably, the focal length f5 of the fifth lens and the effective focal length f of the optical lens satisfy: -1.2 < f5 / f < -0.5.

[0025] Further preferably, the focal length f6 of the sixth lens and the effective focal length f of the optical lens satisfy: f6 / f < -1.0.

[0026] Further preferably, the effective focal length f of the optical lens and the entrance pupil diameter D1 of the first lens satisfy: 0.5 < D1 / f < 0.9.

[0027] It is further preferred that an effective focal length f of the optical lens and an image-side radius of curvature R10 of the fifth lens satisfy: 0.4 < R10 / f < 1.3.

[0028] It is further preferred that an object-side radius of curvature R5 and an image-side radius of curvature R6 of the third lens satisfy: 1.01 < |(R5-R6) / (R5+R6)|.

[0029] The optical lens provided by the present application improves the imaging quality of the optical lens, reduces aberration, and improves the imaging quality of the optical lens by optimizing the shape, optical power, thickness, and spacing of each lens, so that the optical lens has one or more advantages such as small aperture, large image surface, miniaturization, long focal length, and the like. BRIEF DESCRIPTION OF DRAWINGS

[0030] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the following drawings, in which:

[0031] Figure 1 FIG. 1 is a structural schematic diagram of an optical lens according to an embodiment of the present application.

[0032] Figure 2 FIG. 2 is an MTF curve diagram of the optical lens according to the embodiment of the present application.

[0033] Figure 3 FIG. 3 is a structural schematic diagram of an optical lens according to another embodiment of the present application.

[0034] Figure 4 FIG. 4 is an MTF curve diagram of the optical lens according to the embodiment of the present application.

[0035] Figure 5 FIG. 5 is a structural schematic diagram of an optical lens according to another embodiment of the present application.

[0036] Figure 6 FIG. 6 is an MTF curve diagram of the optical lens according to the embodiment of the present application.

[0037] Figure 7 FIG. 7 is a structural schematic diagram of an optical lens according to another embodiment of the present application.

[0038] Figure 8 FIG. 8 is an MTF curve diagram of the optical lens according to the embodiment of the present application.

[0039] Figure 9 FIG. 9 is a structural schematic diagram of an optical lens according to another embodiment of the present application.

[0040] Figure 10 FIG. 10 is an MTF curve diagram of the optical lens according to the embodiment of the present application.

[0041] Figure 11The structure diagram of the optical lens in the embodiment 6 of the present application.

[0042] Figure 12 The MTF curve diagram of the optical lens in the embodiment 6 of the present application.

[0043] Figure 13 The structure diagram of the optical lens in the embodiment 7 of the present application.

[0044] Figure 14 The MTF curve diagram of the optical lens in the embodiment 7 of the present application.

[0045] Figure 15 The structure diagram of the optical lens in the embodiment 8 of the present application.

[0046] Figure 16 The MTF curve diagram of the optical lens in the embodiment 8 of the present application.

[0047] Figure 17 The structure diagram of the optical lens in the embodiment 9 of the present application.

[0048] Figure 18 The MTF curve diagram of the optical lens in the embodiment 9 of the present application.

[0049] Figure 19 The structure diagram of the optical lens in the embodiment 10 of the present application.

[0050] Figure 20 The MTF curve diagram of the optical lens in the embodiment 10 of the present application.

[0051] Figure 21 The structure diagram of the optical lens in the embodiment 11 of the present application.

[0052] Figure 22 The MTF curve diagram of the optical lens in the embodiment 11 of the present application.

[0053] Figure 23 The structure diagram of the optical lens in the embodiment 12 of the present application.

[0054] Figure 24 The MTF curve diagram of the optical lens in the embodiment 12 of the present application.

[0055] Figure 25 The structure diagram of the optical lens in the embodiment 13 of the present application.

[0056] Figure 26 The MTF curve diagram of the optical lens in the embodiment 13 of the present application.

[0057] Figure 27 The structure diagram of the optical lens in the embodiment 14 of the present application.

[0058] Figure 28 MTF curve diagram of the optical lens in embodiment 14 of the present application.

[0059] Figure 29 Structural schematic diagram of the optical lens in embodiment 15 of the present application.

[0060] Figure 30 MTF curve diagram of the optical lens in embodiment 15 of the present application.

[0061] Figure 31 Structural schematic diagram of the optical lens in embodiment 16 of the present application.

[0062] Figure 32 MTF curve diagram of the optical lens in embodiment 16 of the present application.

[0063] Figure 33 Structural schematic diagram of the optical lens in embodiment 17 of the present application.

[0064] Figure 34 MTF curve diagram of the optical lens in embodiment 17 of the present application.

[0065] Figure 35 Structural schematic diagram of the optical lens in embodiment 18 of the present application.

[0066] Figure 36 MTF curve diagram of the optical lens in embodiment 18 of the present application.

[0067] Figure 37 Structural schematic diagram of the optical lens in embodiment 19 of the present application.

[0068] Figure 38 MTF curve diagram of the optical lens in embodiment 19 of the present application.

[0069] Figure 39 Structural schematic diagram of the optical lens in embodiment 20 of the present application.

[0070] Figure 40 MTF curve diagram of the optical lens in embodiment 20 of the present application.

[0071] Figure 41 Structural schematic diagram of the optical lens in embodiment 21 of the present application.

[0072] Figure 42 MTF curve diagram of the optical lens in embodiment 21 of the present application.

[0073] Figure 43 Structural schematic diagram of the optical lens in embodiment 22 of the present application.

[0074] Figure 44A MTF curve diagram of the optical lens in Embodiment 22 of the present application.

[0075] Figure 45 A structure diagram of the optical lens in Embodiment 23 of the present application.

[0076] Figure 46 A MTF curve diagram of the optical lens in Embodiment 23 of the present application.

[0077] Figure 47 A structure diagram of the optical lens in Embodiment 24 of the present application.

[0078] Figure 48 A MTF curve diagram of the optical lens in Embodiment 24 of the present application.

[0079] Figure 49 A structure diagram of the optical lens in Embodiment 25 of the present application.

[0080] Figure 50 A MTF curve diagram of the optical lens in Embodiment 25 of the present application.

[0081] Figure 51 A structure diagram of the optical lens in Embodiment 26 of the present application.

[0082] Figure 52 A MTF curve diagram of the optical lens in Embodiment 26 of the present application.

[0083] The following detailed description will further describe the present application with reference to the above-mentioned drawings. DETAILED DESCRIPTION

[0084] For a better understanding of the present application, various aspects of the present application will be described in more detail below with reference to the accompanying drawings. It is to be noted that these detailed descriptions are only descriptions of embodiments of the present application and are not intended in any way to limit the scope of the present application. Throughout the specification, like reference numerals refer to like elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0085] It is to be noted that, in the present specification, the expressions first, second, third, and the like are used only to distinguish one feature from another feature, and do not indicate any limitation on the features. Thus, 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.

[0086] In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of explanation. Specifically, the shape of the spherical surface or the aspherical surface shown in the drawings is shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the shape of the spherical surface or the aspherical surface shown in the drawings. The drawings are merely examples and are not drawn to scale.

[0087] In the present disclosure, the paraxial region refers to a region near the optical axis. If a 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 a 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 closest to the object is referred to as the object side surface of the lens, and the surface of each lens closest to the imaging plane is referred to as the image side surface of the lens.

[0088] It should also be understood that the words “comprise”, “comprising”, “has”, “having”, “include”, “including” and / or “contains”, “containing” when used in this specification, specify the presence of stated features, elements and / or components but do not preclude the presence or addition of one or more other features, elements, components and / or groups thereof. In addition, when describing the embodiments of the present application, the word “may” means “one or more embodiments of the present application”. Also, the word “exemplary” is intended to mean an example or an illustration.

[0089] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that the terms should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0090] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0091] The optical lens provided by the embodiments of the present application comprises six lenses, which are sequentially arranged along the optical axis from the object side to the imaging plane as the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens.

[0092] In some embodiments, the first lens has a negative focal power, which is beneficial for diverging light rays. Under the same field of view angle condition, the light rays emitted from the image side surface of the first lens can make the subsequent optical system have a larger light ray acceptance surface, thereby reducing the front aperture.

[0093] In some embodiments, the second lens has a positive focal power, which is beneficial for converging light rays. In combination with the first lens having a negative focal power, the optical lens can have a reduced total length, and the converging effect of the light rays can further reduce the rear aperture.

[0094] In some embodiments, the third lens has positive refractive power, which is conducive to receiving light rays converged by the second lens, reducing the height of the light beam when incident to the object side of the fourth lens, and reducing the aperture of the object side of the fourth lens. The object side and the image side of the third lens are both convex, which can reduce the angle between the incident light rays of the edge field of view and the normal of the surface of the object side, avoid light divergence, reduce sensitivity, and correct the stop aberration, thereby further improving the imaging quality of the optical lens.

[0095] In some embodiments, the fourth lens has positive refractive power, which is conducive to converging light rays and effectively correcting the aberration of the optical lens in combination with the fifth lens, thereby improving the imaging quality and optimizing the optical performance such as distortion.

[0096] In some embodiments, the fifth lens has negative refractive power, which is conducive to diverging light rays, allowing the subsequent optical system to have a larger light acceptance surface, improving the optical performance, effectively correcting various aberrations caused by the front lens, and improving the imaging quality of the optical lens. The image side of the fifth lens is concave, which can diverge the central field of view light rays, allowing the light rays to reach a higher imaging position, and reducing the incidence angle of the light rays entering the chip, thereby improving the illumination and reducing the chromatic aberration.

[0097] In some embodiments, the sixth lens has negative refractive power, which is conducive to diverging light rays, allowing the peripheral light rays and the central light rays to be turned upward and reach a higher imaging position, thereby increasing the imaging area of the optical lens.

[0098] In some embodiments, the optical lens can further include a stop, which can be located between the first lens and the second lens. It can be understood that the stop is used to limit the amount of incoming light to change the brightness of the image. When the stop is located between the first lens and the second lens, it is conducive to effectively converging the light rays entering the optical lens, reducing the lens aperture at the rear end of the optical system, and reducing the sensitivity of the optical lens. However, it should be noted that the position of the stop disclosed herein is only an example and not a limitation; in alternative embodiments, the stop can also be arranged at other positions as needed.

[0099] In some embodiments, the optical lens can further include a filter and / or a protective glass arranged between the sixth lens and the imaging surface, which can filter light rays with different wavelengths and prevent damage to the image side elements (e.g., chips) of the optical lens.

[0100] In some embodiments, the effective focal length f of the optical lens and the total optical length TTL satisfy: 1.6 < TTL / f < 2.5. Satisfying the above range means that the optical length of the optical lens can be effectively limited, which is conducive to realizing the miniaturization of the optical lens.

[0101] In some embodiments, the effective focal length f of the optical lens, the maximum field of view FOV, and the real image height IH corresponding to the maximum field of view satisfy: 0.95 < (IH / 2) / (f x Tan(FOV / 2)) < 1.05. Satisfying the above range means that the optical distortion of the optical lens can be controlled within a small range, which is beneficial to improving the imaging quality of the optical lens.

[0102] In some embodiments, the effective focal length f of the optical lens and the real image height IH corresponding to the maximum field of view satisfy: 0.55 < IH / f < 0.7. Satisfying the above range means that the optical lens can achieve a larger imaging surface, which is beneficial to improving the imaging quality of the optical lens.

[0103] In some embodiments, the effective focal length f of the optical lens and the optical back focal length BFL satisfy: 0.2 < BFL / f < 0.5. Satisfying the above range means that the optical lens has a longer back focus, which is beneficial to reducing the assembly of the interference module and improving the production yield.

[0104] In some embodiments, the real image height IH corresponding to the maximum field of view of the optical lens, the total optical length TTL, and the maximum field of view FOV satisfy: 50.0 < 180° x TTL / (IH / 2) / (FOV / 2) < 80.0. Satisfying the above range can balance between large image height, long focal length, and miniaturization, and improve the imaging quality of the optical lens.

[0105] In some embodiments, the sum of the center thicknesses of the first lens to the sixth lens ∑CT and the total optical length TTL of the optical lens satisfy: 0.5 < ∑CT / TTL < 0.8. Satisfying the above range is beneficial to compressing the total length and volume of the optical lens and maintaining the miniaturization of the optical lens.

[0106] In some embodiments, the maximum field of view FOV of the optical lens, the real image height IH corresponding to the maximum field of view, and the object side light entrance aperture D1 of the first lens satisfy: 3.0 < D1 / IH / tan(FOV / 2) < 4.0. Satisfying the above range can ensure that the front aperture size of the optical lens and the field of view and the image surface are balanced, and improve the imaging quality of the optical lens.

[0107] In some embodiments, the focal length f1 of the first lens and the effective focal length f of the optical lens satisfy: f1 / f < -1.0. Satisfying the above range is beneficial to diverging light rays, and under the same field of view condition, the light rays emitted from the image side of the first lens can make the subsequent optical system have a larger light acceptance surface, and reduce the front aperture.

[0108] In some embodiments, the focal length f2 of the second lens and the effective focal length f of the optical lens satisfy: 0.9 < f2 / f. Satisfying the above range is conducive to converging light rays, and in combination with the first lens having negative refractive power, the total length of the optical lens can be reduced, and the converging effect on light rays can be further reduced.

[0109] In some embodiments, the focal length f3 of the third lens and the effective focal length f of the optical lens satisfy: 0.9 < f3 / f < 1.9. Satisfying the above range is conducive to receiving light rays converged from the second lens, reducing the height of the light beam when incident to the object side of the fourth lens, and reducing the aperture of the object side of the fourth lens.

[0110] In some embodiments, the focal length f4 of the fourth lens and the effective focal length f of the optical lens satisfy: 0.6 < f4 / f < 1.3. Satisfying the above range is conducive to converging light rays, and in combination with the fifth lens, the aberration of the optical lens can be effectively corrected, the imaging quality is improved, and the optical performance such as distortion is optimized.

[0111] In some embodiments, the focal length f5 of the fifth lens and the effective focal length f of the optical lens satisfy: -1.2 < f5 / f < -0.5. Satisfying the above range is conducive to diverging light rays, so that the subsequent optical system has a larger light acceptance surface, and the optical performance can effectively correct various aberrations brought by the front lens, thereby improving the imaging quality of the optical lens.

[0112] In some embodiments, the focal length f6 of the sixth lens and the effective focal length f of the optical lens satisfy: f6 / f < -1.0. Satisfying the above range is conducive to diverging light rays, so that the peripheral light rays and the central light rays are turned upward to reach a higher imaging position, thereby increasing the imaging area of the optical lens.

[0113] In some embodiments, the effective focal length f of the optical lens and the curvature radius R7 of the object side of the fourth lens satisfy: 0.5 < R7 / f < 0.9. Satisfying the above range can compress light rays so that they smoothly enter the fifth lens, reduce the sensitivity of the optical lens, and also enable the light rays to be turned faster to reach the image plane, thereby reducing the total length of the optical lens.

[0114] In some embodiments, the effective focal length f of the optical lens and the curvature radius R10 of the image side of the fifth lens satisfy: 0.4 < R10 / f < 1.3. Satisfying the above range can diverge central field of view light rays so that the light rays can reach a higher imaging position, while reducing the incidence angle of the light rays entering the chip, thereby improving the illumination and reducing the chromatic aberration.

[0115] In some embodiments, the object-side curvature radius R5 of the third lens and the image-side curvature radius R6 satisfy: 1.01<|(R5-R6) / (R5+R6)|. Satisfying the above range can reduce the angle between the edge field incident light and the object-side surface normal, avoid light divergence, reduce sensitivity, and at the same time, be beneficial to correcting the stop aberration, and further improve the imaging quality of the optical lens.

[0116] In some embodiments, the fourth lens and the fifth lens can be cemented to form a cemented lens, which can effectively correct the chromatic aberration of the optical lens, reduce the eccentricity sensitivity of the optical lens, balance the aberration of the optical lens, and improve the imaging quality of the optical lens. In addition, the cemented lens can also reduce the assembly sensitivity of the optical lens, thereby reducing the processing difficulty of the optical lens and improving the assembly yield of the optical lens.

[0117] In some embodiments, the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens can adopt a spherical lens or an aspherical lens. Compared with the spherical structure, the aspherical structure can effectively reduce the aberration of the optical system, thereby reducing the number of lenses and the size of the lenses, and better realizing the miniaturization of the lens.

[0118] In various embodiments of the present application, when the lens adopts an aspherical lens, the shape of each aspherical surface of the optical lens satisfies the following equation:

[0119]

[0120] Wherein, z is the distance between the curved surface and the vertex of the curved surface in the direction of the optical axis, h is the distance from the optical axis to the curved surface, c is the curvature of the vertex of the curved surface, K is the quadratic surface coefficient, and A, B, C, D, E and F are the second-order, fourth-order, sixth-order, eighth-order, tenth-order and twelfth-order curved surface coefficients, respectively.

[0121] The present application will be further described in the following embodiments. In various embodiments, the thickness, curvature radius and material selection of each lens in the optical lens are different, and the specific differences can be referred to the parameter table of each embodiment. The following embodiments are only preferred embodiments of the present application, but the embodiments of the present application are not limited to the following embodiments, and any changes, substitutions, combinations or simplifications made without departing from the innovative points of the present application should be regarded as equivalent replacement methods, and are included in the protection scope of the present application.

[0122] Embodiment 1

[0123] Please refer to Figure 1Figure 1 shows a structural schematic diagram of an optical lens provided in Embodiment 1 of the present application, which comprises, along an optical axis from an object side to an imaging surface, a first lens L1, a stop ST, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a filter G1.

[0124] The first lens L1 has a negative focal length, the object side S1 is concave, and the image side S2 is convex; the second lens L2 has a positive focal length, the object side S3 is concave, and the image side S4 is convex; the third lens L3 has a positive focal length, the object side S5 and the image side S6 are both convex; the fourth lens L4 has a positive focal length, the object side S7 and the image side S8 are both convex; the fifth lens L5 has a negative focal length, the object side S8 and the image side S9 are both concave, and the fourth lens L4 and the fifth lens L5 form a cemented lens, the cemented surface being S8; the sixth lens L6 has a negative focal length, the object side S10 is convex, and the image side S11 is concave; the object side S12 and the image side S13 of the filter G1 are both flat; and the imaging surface S14 is flat.

[0125] The first lens L1, the third lens L3, the fourth lens L4 and the fifth lens L5 are glass spherical lenses; the second lens L2 and the sixth lens L6 are glass aspherical lenses.

[0126] The first lens L1, the third lens L3, the fourth lens L4 and the fifth lens L5 are glass spherical lenses; the second lens L2 and the sixth lens L6 are glass aspherical lenses.

[0127] The first lens L1, the third lens L3, the fourth lens L4 and the fifth lens L5 are glass spherical lenses; the second lens L2 and the sixth lens L6 are glass aspherical lenses.

[0128] The related parameters of the lenses in the optical lens in Embodiment 1 are shown in Table 1-1.

[0129] Table 1-1

[0130]

[0131] The surface type parameters of the aspherical lenses in the optical lens in Embodiment 1 are shown in Table 1-2.

[0132] Table 1-2

[0133] Surface number K A B C D E F S3 5.01E+01 0.00E+00 0.00E+00 1.79E-06 2.55E-08 1.09E-09 -1.72E-11 S4 -3.40E+00 0.00E+00 0.00E+00 6.10E-06 -2.16E-07 7.73E-09 -8.21E-11 S10 6.01E-01 0.00E+00 -2.04E-03 5.29E-05 -6.93E-06 3.06E-07 -4.85E-09 S11 -7.67E-01 0.00E+00 -1.41E-03 7.04E-05 -7.56E-06 3.78E-07 -6.27E-09

[0134] In this embodiment, Figure 2 Figure 2 shows the MTF (Modulation Transfer Function) curve of Embodiment 1, which represents the imaging modulation degree of the lens at different spatial frequencies in each field of view, the horizontal axis represents the spatial frequency (unit: lp / mm), and the vertical axis represents the MTF value. As can be seen from the figure, the MTF value of the present embodiment is above 0.3 in the full field of view, and in the range of 0-120 lp / mm, the MTF curve uniformly and smoothly decreases from the center to the edge of the field of view, and has good imaging quality and good detail resolution ability in both low and high frequency cases.

[0135] Example 2

[0136] Please see Figure 3 The figure shown is a schematic diagram of the optical lens provided in Embodiment 2 of the present invention. Compared with Embodiment 1, the main difference in this embodiment is that the optical parameters such as the radius of curvature of each lens surface and the lens thickness are different.

[0137] The relevant parameters of each lens in the optical lens of Example 2 are shown in Table 2-1.

[0138] Table 2-1

[0139]

[0140] The surface profile parameters of the aspherical lens in Example 2 are shown in Table 2-2.

[0141] Table 2-2

[0142]

[0143]

[0144] from Figure 4 As can be seen, the MTF value of this embodiment is above 0.2 throughout the entire field of view. In the range of 0 to 120 lp / mm, the MTF curve decreases smoothly and evenly from the center to the edge of the field of view. It has qualified imaging quality and qualified detail resolution in both low and high frequency conditions.

[0145] Example 3

[0146] Please see Figure 5 The figure shown is a schematic diagram of the optical lens provided in Embodiment 3 of the present invention. Compared with Embodiment 1, the main difference in this embodiment is that the optical parameters such as the radius of curvature of each lens surface and the lens thickness are different.

[0147] The relevant parameters of each lens in the optical lens of Example 3 are shown in Table 3-1.

[0148] Table 3-1

[0149]

[0150] The surface profile parameters of the aspherical lens in Example 3 are shown in Table 3-2.

[0151] Table 3-2

[0152] Surface number K A B C D E F S3 4.05E+01 0.00E+00 0.00E+00 3.56E-06 1.04E-08 3.10E-10 -9.54E-12 S4 -5.01E+01 0.00E+00 0.00E+00 6.35E-06 -6.68E-08 2.56E-09 -2.66E-11 S10 -1.32E+00 0.00E+00 5.03E-03 -4.77E-05 -5.00E-06 2.21E-07 -3.18E-09 S11 -1.71E+00 0.00E+00 4.64E-03 2.94E-05 -5.45E-06 2.06E-07 -3.26E-09

[0153] from Figure 6It can be seen from the MTF curves in the full field of view that the MTF values of the optical lens provided in the embodiment are all above 0.2, and in the range of 0-120 lp / mm, the MTF curves uniformly and smoothly decrease from the center to the edge of the field of view, and the imaging quality and the detail resolution capability are qualified in the low frequency and high frequency cases.

[0154] Embodiment 4

[0155] Please refer to Figure 7 , which is a structural schematic diagram of the optical lens provided in Embodiment 4 of the present application. Compared with Embodiment 1, the main difference of the present embodiment is that the optical parameters such as the radius of curvature of each lens surface and the lens thickness are different.

[0156] The related parameters of each lens in the optical lens in Embodiment 4 are shown in Table 4-1.

[0157] Table 4-1

[0158]

[0159] The surface type parameters of the aspherical lens of the optical lens in Embodiment 4 are shown in Table 4-2.

[0160] Table 4-2

[0161] Surface number K A B C D E F S3 -5.19E+00 0.00E+00 0.00E+00 -5.87E-06 2.80E-07 -6.87E-09 5.63E-11 S4 1.00E+01 0.00E+00 0.00E+00 -8.34E-07 4.38E-08 -6.78E-10 3.56E-12 S10 -3.06E+00 0.00E+00 -2.82E-03 1.03E-04 -6.66E-06 2.99E-07 -4.78E-09 S11 -6.02E+00 0.00E+00 -1.57E-03 1.03E-04 -7.49E-06 3.50E-07 -5.65E-09

[0162] From Figure 8 , it can be seen that the MTF values of the optical lens provided in the embodiment are all above 0.3 in the full field of view, and in the range of 0-120 lp / mm, the MTF curves uniformly and smoothly decrease from the center to the edge of the field of view, and the imaging quality and the detail resolution capability are better in the low frequency and high frequency cases.

[0163] Embodiment 5

[0164] Please refer to Figure 9 , which is a structural schematic diagram of the optical lens provided in Embodiment 5 of the present application. Compared with Embodiment 1, the main difference of the present embodiment is that the optical parameters such as the radius of curvature of each lens surface and the lens thickness are different.

[0165] The related parameters of each lens in the optical lens in Embodiment 5 are shown in Table 5-1.

[0166] Table 5-1

[0167]

[0168] The surface type parameters of the aspherical lens of the optical lens in Embodiment 5 are shown in Table 5-2.

[0169] Table 5-2

[0170] Surface number K A B C D E F S3 -9.02E+00 0.00E+00 0.00E+00 -6.29E-06 2.63E-07 -6.93E-09 6.51E-11 S4 -1.00E+01 0.00E+00 0.00E+00 -8.56E-07 3.96E-08 -9.82E-10 1.07E-11 S10 -3.02E+00 0.00E+00 1.60E-03 -1.20E-04 7.97E-06 -2.93E-07 4.15E-09 S11 1.01E+01 0.00E+00 2.85E-03 -1.23E-04 8.37E-06 -2.86E-07 3.93E-09

[0171] As can be seen from Figure 10 , the MTF value of the embodiment is above 0.3 in the full field of view, and in the range of 0-120 lp / mm, the MTF curve uniformly and smoothly decreases from the center to the edge of the field of view, and has good imaging quality and good detail resolution ability in the case of low frequency and high frequency.

[0172] Embodiment 6

[0173] Please refer to Figure 11 , which is a structural schematic diagram of the optical lens provided in embodiment 6 of the application, and compared with embodiment 1, the main difference of the embodiment is that the optical parameters such as the radius of curvature of each lens surface and the lens thickness are different.

[0174] The related parameters of each lens in the optical lens in embodiment 6 are shown in Table 6-1.

[0175] Table 6-1

[0176]

[0177]

[0178] The surface type parameters of the aspherical lens of the optical lens in embodiment 6 are shown in Table 6-2.

[0179] Table 6-2

[0180] Surface number K A B C D E F S3 -3.95E+01 0.00E+00 0.00E+00 -5.44E-06 3.12E-07 -9.14E-09 1.04E-10 S4 9.22E-01 0.00E+00 0.00E+00 -6.20E-07 5.40E-08 -1.44E-09 1.55E-11 S10 1.38E+01 0.00E+00 -1.51E-03 6.21E-05 -6.97E-06 3.13E-07 -5.37E-09 S11 2.40E+00 0.00E+00 -1.28E-03 6.53E-05 -6.09E-06 2.68E-07 -4.09E-09

[0181] As can be seen from Figure 12 , the MTF value of the embodiment is above 0.3 in the full field of view, and in the range of 0-120 lp / mm, the MTF curve uniformly and smoothly decreases from the center to the edge of the field of view, and has good imaging quality and good detail resolution ability in the case of low frequency and high frequency.

[0182] Embodiment 7

[0183] Please refer to Figure 13 , which is a structural schematic diagram of the optical lens provided in embodiment 7 of the application, and compared with embodiment 1, the main difference of the embodiment is that the optical parameters such as the radius of curvature of each lens surface and the lens thickness are different.

[0184] The related parameters of each lens in the optical lens in embodiment 7 are shown in Table 7-1.

[0185] Table 7-1

[0186]

[0187]

[0188] The surface profile parameters of the aspherical lens of the optical lens in Embodiment 7 are shown in Table 7-2.

[0189] Table 7-2

[0190] Surface number K A B C D E F S3 -1.34E+00 0.00E+00 0.00E+00 -4.05E-06 3.08E-07 -9.54E-09 1.14E-10 S4 -4.94E+00 0.00E+00 0.00E+00 -4.73E-07 6.08E-08 -1.35E-09 1.27E-11 S10 7.15E+00 0.00E+00 -3.03E-04 -3.40E-05 6.48E-06 -2.71E-07 3.95E-09 S11 8.00E+01 0.00E+00 2.54E-04 -4.45E-05 7.68E-06 -3.05E-07 4.73E-09

[0191] It can be seen from Figure 14 that the MTF values of the present embodiment are all above 0.2 in the full field of view, and in the range of 0-120 lp / mm, the MTF curves uniformly and smoothly decrease from the center to the edge of the field of view, and have qualified imaging quality and qualified detail resolution ability in the case of low frequency and high frequency.

[0192] Embodiment 8

[0193] Please refer to Figure 15 , which is a structural schematic diagram of the optical lens provided in Embodiment 8 of the present application. Compared with Embodiment 1, the main difference of the present embodiment is that the optical parameters such as the radius of curvature of each lens surface and the lens thickness of the cemented lens are different.

[0194] The related parameters of each lens in the optical lens in Embodiment 8 are shown in Table 8-1.

[0195] Table 8-1

[0196]

[0197]

[0198] The surface profile parameters of the aspherical lens of the optical lens in Embodiment 8 are shown in Table 8-2.

[0199] Table 8-2

[0200] Surface number K A B C D E F S3 -2.47E-01 0.00E+00 0.00E+00 -4.01E-06 3.07E-07 -9.23E-09 1.07E-10 S4 -8.13E+00 0.00E+00 0.00E+00 8.45E-08 5.85E-08 -1.30E-09 1.27E-11 S11 7.05E+01 0.00E+00 -7.18E-04 -3.79E-05 6.57E-06 -2.62E-07 4.09E-09 S12 8.00E+01 0.00E+00 -3.98E-04 -4.57E-05 7.41E-06 -2.92E-07 4.68E-09

[0201] It can be seen from Figure 16 that the MTF values of the present embodiment are all above 0.3 in the full field of view, and in the range of 0-120 lp / mm, the MTF curves uniformly and smoothly decrease from the center to the edge of the field of view, and have better imaging quality and better detail resolution ability in the case of low frequency and high frequency.

[0202] Embodiment 9

[0203] Please refer to Figure 17 , which is a structural schematic diagram of the optical lens provided in Embodiment 9 of the present application. Compared with Embodiment 1, the main difference of the present embodiment is that the optical parameters such as the radius of curvature of each lens surface and the lens thickness of the cemented lens are different.

[0204] The related parameters of the lenses in the optical lens in embodiment 9 are shown in table 9-1.

[0205] Table 9-1

[0206]

[0207]

[0208] The surface type parameters of the aspheric lenses of the optical lens in embodiment 9 are shown in table 9-2.

[0209] Table 9-2

[0210] Surface number K A B C D E F S3 -2.17E-01 0.00E+00 0.00E+00 -4.21E-06 3.07E-07 -9.01E-09 1.01E-10 S4 -1.43E+01 0.00E+00 0.00E+00 4.89E-07 5.54E-08 -1.34E-09 1.33E-11 S11 -8.00E+01 0.00E+00 -9.38E-04 -4.03E-05 6.78E-06 -2.53E-07 3.52E-09 S12 3.77E+01 0.00E+00 -7.76E-04 -4.69E-05 7.53E-06 -2.83E-07 4.15E-09

[0211] It can be seen from Figure 18 that the MTF values of the embodiment are all above 0.2 in the full field of view, and in the range of 0-120 lp / mm, the MTF curves uniformly and smoothly decrease from the center to the edge of the field of view, and have qualified imaging quality and qualified detail resolution ability in the low frequency and high frequency cases.

[0212] Embodiment 10

[0213] Please refer to Figure 19 , which is a structural schematic diagram of the optical lens provided in embodiment 10 of the application, and compared with embodiment 1, the main difference is that the optical parameters such as the radii of curvature of the lens surfaces and the lens thickness are different.

[0214] The related parameters of the lenses in the optical lens in embodiment 10 are shown in table 10-1.

[0215] Table 10-1

[0216]

[0217] The surface type parameters of the aspheric lenses of the optical lens in embodiment 10 are shown in table 10-2.

[0218] Table 10-2

[0219]

[0220]

[0221] It can be seen from Figure 20 that the MTF values of the embodiment are all above 0.3 in the full field of view, and in the range of 0-120 lp / mm, the MTF curves uniformly and smoothly decrease from the center to the edge of the field of view, and have better imaging quality and better detail resolution ability in the low frequency and high frequency cases.

[0222] Example 11

[0223] Please see Figure 21 The figure shown is a schematic diagram of the optical lens provided in Embodiment 11 of the present invention. Compared with Embodiment 1, the main difference in this embodiment is that the optical parameters such as the radius of curvature of each lens surface and the lens thickness are different.

[0224] The relevant parameters of each lens in the optical lens of Example 11 are shown in Table 11-1.

[0225] Table 11-1

[0226]

[0227] The surface profile parameters of the aspherical lens in the optical lens of Example 11 are shown in Table 11-2.

[0228] Table 11-2

[0229] Surface number K A B C D E F S3 -3.52E+00 0.00E+00 0.00E+00 -5.72E-06 2.59E-07 -7.61E-09 7.83E-11 S4 1.43E+01 0.00E+00 0.00E+00 -1.40E-06 2.54E-08 -6.60E-10 5.32E-12 S10 -2.12E+00 0.00E+00 2.60E-03 -9.93E-05 5.37E-06 -2.56E-07 4.83E-09 S11 -3.87E+00 0.00E+00 2.98E-03 -7.50E-05 6.07E-06 -3.08E-07 5.81E-09

[0230] from Figure 22 As can be seen, the MTF value of this embodiment is above 0.2 throughout the entire field of view. In the range of 0 to 120 lp / mm, the MTF curve decreases smoothly and evenly from the center to the edge of the field of view. It has qualified imaging quality and qualified detail resolution in both low and high frequency conditions.

[0231] Example 12

[0232] Please see Figure 23 The figure shown is a schematic diagram of the optical lens provided in Embodiment 12 of the present invention. Compared with Embodiment 1, the main difference in this embodiment is that the optical parameters such as the radius of curvature of each lens surface and the lens thickness are different.

[0233] The relevant parameters of each lens in the optical lens of Example 12 are shown in Table 12-1.

[0234] Table 12-1

[0235]

[0236] The surface profile parameters of the aspherical lens in the optical lens of Example 12 are shown in Table 12-2.

[0237] Table 12-2

[0238] Surface number K A B C D E F S3 -5.05E+00 0.00E+00 0.00E+00 -5.70E-06 2.65E-07 -7.49E-09 7.69E-11 S4 1.46E+01 0.00E+00 0.00E+00 -1.25E-06 4.18E-08 -7.93E-10 5.92E-12 S10 -3.77E+00 0.00E+00 -2.21E-03 4.28E-05 -6.47E-06 3.86E-07 -6.69E-09 S11 -1.84E+00 0.00E+00 -2.24E-03 6.70E-05 -6.21E-06 3.69E-07 -6.48E-09

[0239] from Figure 24As can be seen, the MTF value of this embodiment is above 0.3 throughout the entire field of view. In the range of 0 to 120 lp / mm, the MTF curve decreases smoothly and evenly from the center to the edge of the field of view. It has good imaging quality and good detail resolution in both low and high frequency conditions.

[0240] Example 13

[0241] Please see Figure 25 The figure shown is a schematic diagram of the structure of the optical lens provided in Embodiment 13 of the present invention. Compared with Embodiment 1, the main difference in this embodiment is that the optical parameters such as the radius of curvature of each lens surface and the lens thickness are different.

[0242] The relevant parameters of each lens in the optical lens of Example 13 are shown in Table 13-1.

[0243] Table 13-1

[0244]

[0245] The surface profile parameters of the aspherical lens in the optical lens of Example 13 are shown in Table 13-2.

[0246] Table 13-2

[0247] Surface number K A B C D E F S3 -5.37E+00 0.00E+00 0.00E+00 -5.80E-06 2.64E-07 -7.37E-09 7.31E-11 S4 1.19E+01 0.00E+00 0.00E+00 -7.91E-07 4.04E-08 -8.89E-10 8.18E-12 S10 -7.44E-01 0.00E+00 1.87E-03 -5.82E-05 6.74E-06 -3.40E-07 5.70E-09 S11 -5.50E+00 0.00E+00 1.67E-03 -5.41E-05 7.46E-06 -3.40E-07 5.31E-09

[0248] from Figure 26 As can be seen, the MTF value of this embodiment is above 0.3 throughout the entire field of view. In the range of 0 to 120 lp / mm, the MTF curve decreases smoothly and evenly from the center to the edge of the field of view. It has good imaging quality and good detail resolution in both low and high frequency conditions.

[0249] Example 14

[0250] Please see Figure 27 The figure shown is a schematic diagram of the optical lens provided in Embodiment 14 of the present invention. Compared with Embodiment 1, the main difference in this embodiment is the setting of aspherical lenses, and the optical parameters such as the radius of curvature and lens thickness of each lens surface are different.

[0251] The relevant parameters of each lens in the optical lens of Example 14 are shown in Table 14-1.

[0252] Table 14-1

[0253]

[0254] The surface profile parameters of the aspherical lens in the optical lens of Example 14 are shown in Table 14-2.

[0255] Table 14-2

[0256] Surface number K A B C D E F S3 -3.39E+00 0.00E+00 0.00E+00 -5.79E-06 2.48E-07 -7.42E-09 7.54E-11 S4 1.69E+01 0.00E+00 0.00E+00 -1.43E-06 2.56E-08 -7.33E-10 6.07E-12 S10 -5.67E-01 0.00E+00 1.65E-03 -5.02E-05 6.62E-06 -3.40E-07 5.78E-09 S11 -4.84E+00 0.00E+00 1.67E-03 -5.18E-05 7.47E-06 -3.44E-07 5.46E-09

[0257] As can be seen from Figure 28 , the MTF value of the embodiment is above 0.2 in the full field of view, and in the range of 0-120 lp / mm, the MTF curve uniformly and smoothly decreases from the center to the edge of the field of view, and has qualified imaging quality and qualified detail resolution capability in the case of low frequency and high frequency.

[0258] Embodiment 15

[0259] Please refer to Figure 29 , which is a structural schematic diagram of the optical lens provided in the embodiment 15 of the present application, and compared with the embodiment 1, the main difference of the embodiment is that the optical parameters such as the radius of curvature of each lens surface and the lens thickness are different.

[0260] The related parameters of each lens in the optical lens in the embodiment 15 are shown in Table 15-1.

[0261] Table 15-1

[0262]

[0263]

[0264] The surface type parameters of the aspherical lens of the optical lens in the embodiment 15 are shown in Table 15-2.

[0265] Table 15-2

[0266] Surface number K A B C D E F S3 -5.65E+00 0.00E+00 0.00E+00 -6.04E-06 2.06E-07 -6.10E-09 5.63E-11 S4 1.16E+01 0.00E+00 0.00E+00 -1.19E-06 1.20E-08 -2.76E-10 2.67E-12 S10 -9.52E-01 0.00E+00 2.54E-03 -7.01E-05 4.35E-06 -2.05E-07 3.50E-09 S11 -2.02E+00 0.00E+00 2.86E-03 -7.52E-05 6.42E-06 -2.84E-07 4.62E-09

[0267] As can be seen from Figure 30 , the MTF value of the embodiment is above 0.3 in the full field of view, and in the range of 0-120 lp / mm, the MTF curve uniformly and smoothly decreases from the center to the edge of the field of view, and has better imaging quality and better detail resolution capability in the case of low frequency and high frequency.

[0268] Embodiment 16

[0269] Please refer to Figure 31 , which is a structural schematic diagram of the optical lens provided in the embodiment 16 of the present application, and compared with the embodiment 1, the main difference of the embodiment is that the optical parameters such as the radius of curvature of each lens surface and the lens thickness are different.

[0270] The related parameters of each lens in the optical lens in the embodiment 16 are shown in Table 16-1.

[0271] Table 16-1

[0272]

[0273]

[0274] The surface profile parameters of the aspherical lens of the optical lens in Embodiment 16 are shown in Table 16-2.

[0275] Table 16-2

[0276] Surface number K A B C D E F S3 -4.99E+01 0.00E+00 0.00E+00 -5.84E-06 3.03E-07 -9.21E-09 1.11E-10 S4 2.43E+00 0.00E+00 0.00E+00 -6.94E-07 5.60E-08 -1.40E-09 1.45E-11 S10 1.37E+01 0.00E+00 -1.59E-03 6.05E-05 -6.97E-06 3.13E-07 -5.37E-09 S11 2.40E+00 0.00E+00 -1.30E-03 6.48E-05 -6.09E-06 2.69E-07 -4.04E-09

[0277] As can be seen from Figure 32 , the MTF value of the present embodiment is above 0.3 in the full field of view, and in the range of 0-120 lp / mm, the MTF curve uniformly and smoothly decreases from the center to the edge of the field of view, and has good imaging quality and good detail resolution ability in low and high frequency cases.

[0278] Embodiment 17

[0279] Please refer to Figure 33 , which is a structural schematic diagram of the optical lens provided in Embodiment 17 of the present application. Compared with Embodiment 1, the main difference is that the optical parameters such as the radius of curvature of each lens surface and the lens thickness are different.

[0280] The related parameters of each lens in the optical lens in Embodiment 17 are shown in Table 17-1.

[0281] Table 17-1

[0282]

[0283]

[0284] The surface profile parameters of the aspherical lens of the optical lens in Embodiment 17 are shown in Table 17-2.

[0285] Table 17-2

[0286] Surface number K A B C D E F S3 -2.71E+00 0.00E+00 0.00E+00 -4.33E-06 2.99E-07 -9.44E-09 1.14E-10 S4 -4.91E+00 0.00E+00 0.00E+00 -7.98E-07 5.55E-08 -1.32E-09 1.22E-11 S10 6.29E+00 0.00E+00 -9.97E-04 -2.36E-05 6.99E-06 -2.73E-07 3.61E-09 S11 8.00E+01 0.00E+00 -3.63E-04 -3.67E-05 8.24E-06 -3.05E-07 4.45E-09

[0287] As can be seen from Figure 34 , the MTF value of the present embodiment is above 0.2 in the full field of view, and in the range of 0-120 lp / mm, the MTF curve uniformly and smoothly decreases from the center to the edge of the field of view, and has qualified imaging quality and qualified detail resolution ability in low and high frequency cases.

[0288] Embodiment 18

[0289] Please refer to Figure 35Figure 18 shows a structural schematic diagram of the optical lens provided in Embodiment 18 of the present application; compared with Embodiment 1, the main difference of the present embodiment lies in the cemented lens, and the optical parameters such as the radius of curvature of each lens surface and the lens thickness are different.

[0290] The related parameters of each lens in the optical lens in Embodiment 18 are shown in Table 18-1.

[0291] Table 18-1

[0292]

[0293] The surface type parameters of the aspherical lens of the optical lens in Embodiment 18 are shown in Table 18-2.

[0294] Table 18-2

[0295] Surface number K A B C D E F S3 -9.67E-01 0.00E+00 0.00E+00 -4.33E-06 3.06E-07 -9.01E-09 1.03E-10 S4 -1.54E+01 0.00E+00 0.00E+00 3.80E-07 5.48E-08 -1.32E-09 1.39E-11 S11 -8.00E+01 0.00E+00 -1.24E-03 -4.39E-05 6.84E-06 -2.48E-07 3.43E-09 S12 3.45E+01 0.00E+00 -1.05E-03 -5.34E-05 7.80E-06 -2.77E-07 3.66E-09

[0296] It can be seen from Figure 36 that the MTF value of the present embodiment is above 0.3 in the full field of view, and the MTF curve uniformly and smoothly decreases from the center to the edge of the field of view in the range of 0-120 lp / mm, and has good imaging quality and good detail resolution ability in the case of low frequency and high frequency.

[0297] Embodiment 19

[0298] Please refer to Figure 37 Figure 19 shows a structural schematic diagram of the optical lens provided in Embodiment 19 of the present application; compared with Embodiment 1, the main difference of the present embodiment lies in the cemented lens, and the optical parameters such as the radius of curvature of each lens surface and the lens thickness are different.

[0299] The related parameters of each lens in the optical lens in Embodiment 19 are shown in Table 19-1.

[0300] Table 19-1

[0301]

[0302] The surface type parameters of the aspherical lens of the optical lens in Embodiment 19 are shown in Table 19-2.

[0303] Table 19-2

[0304]

[0305]

[0306] It can be seen from Figure 38As can be seen, the MTF value of this embodiment is above 0.3 throughout the entire field of view. In the range of 0 to 120 lp / mm, the MTF curve decreases smoothly and evenly from the center to the edge of the field of view. It has good imaging quality and good detail resolution in both low and high frequency conditions.

[0307] Example 20

[0308] Please see Figure 39 The figure shown is a schematic diagram of the structure of the optical lens provided in Embodiment 20 of the present invention. Compared with Embodiment 1, the main difference in this embodiment is that the optical parameters such as the radius of curvature of each lens surface and the lens thickness are different.

[0309] The relevant parameters of each lens in the optical lens of Example 20 are shown in Table 20-1.

[0310] Table 20-1

[0311]

[0312] The surface profile parameters of the aspherical lens in the optical lens of Example 20 are shown in Table 20-2.

[0313] Table 20-2

[0314] Surface number K A B C D E F S3 -4.55E+00 0.00E+00 0.00E+00 -5.68E-06 2.70E-07 -7.37E-09 7.13E-11 S4 1.97E+01 0.00E+00 0.00E+00 -1.19E-06 4.08E-08 -8.22E-10 5.81E-12 S10 -9.02E-01 0.00E+00 -1.85E-03 3.53E-05 -7.26E-06 3.68E-07 -5.50E-09 S11 -6.85E-01 0.00E+00 -1.72E-03 3.07E-05 -6.49E-06 3.94E-07 -6.45E-09

[0315] from Figure 40 As can be seen, the MTF value of this embodiment is above 0.3 throughout the entire field of view. In the range of 0 to 120 lp / mm, the MTF curve decreases smoothly and evenly from the center to the edge of the field of view. It has good imaging quality and good detail resolution in both low and high frequency conditions.

[0316] Example 21

[0317] Please see Figure 41 The figure shown is a schematic diagram of the optical lens provided in Embodiment 21 of the present invention. Compared with Embodiment 1, the main difference in this embodiment is that the optical parameters such as the radius of curvature of each lens surface and the lens thickness are different.

[0318] The relevant parameters of each lens in the optical lens of Example 21 are shown in Table 21-1.

[0319] Table 21-1

[0320]

[0321] The surface profile parameters of the aspherical lens in the optical lens of Example 21 are shown in Table 21-2.

[0322] Table 21-2

[0323] Surface number K A B C D E F S3 -6.02E+00 0.00E+00 0.00E+00 -1.01E-06 6.94E-09 -1.05E-09 2.22E-11 S4 5.00E+01 0.00E+00 0.00E+00 -4.88E-07 5.03E-08 -1.03E-09 1.10E-11 S10 -6.13E+00 0.00E+00 -1.06E-03 -5.15E-05 -1.01E-06 1.03E-07 -6.36E-10 S11 -3.76E+00 0.00E+00 -7.81E-04 -4.68E-05 5.14E-07 6.00E-08 -4.41E-10

[0324] As can be seen from Figure 42 , the MTF value of the embodiment is above 0.2 in the full field of view, and in the range of 0-120 lp / mm, the MTF curve uniformly and smoothly decreases from the center to the edge of the field of view, and has qualified imaging quality and qualified detail resolution capability in the case of low frequency and high frequency.

[0325] Embodiment 22

[0326] Please refer to Figure 43 , which is a structural schematic diagram of the optical lens provided in the embodiment 22 of the application, and compared with the embodiment 1, the main difference of the embodiment is that the optical parameters such as the radius of curvature of each lens surface and the lens thickness are different.

[0327] The related parameters of each lens in the optical lens in the embodiment 22 are shown in Table 22-1.

[0328] Table 22-1

[0329]

[0330] The surface type parameters of the aspherical lens of the optical lens in the embodiment 22 are shown in Table 22-2.

[0331] Table 22-2

[0332] Surface number K A B C D E F S3 -1.15E+01 0.00E+00 0.00E+00 -1.79E-06 -2.92E-08 -1.46E-09 5.05E-11 S4 -5.00E+01 0.00E+00 0.00E+00 -1.00E-06 6.14E-08 -1.13E-09 1.34E-11 S10 -6.37E-03 0.00E+00 2.04E-05 6.81E-05 -8.66E-07 -5.81E-08 1.50E-09 S11 -2.20E+00 0.00E+00 3.91E-04 4.58E-05 1.24E-06 -1.13E-07 2.10E-09

[0333] As can be seen from Figure 44 , the MTF value of the embodiment is above 0.2 in the full field of view, and in the range of 0-120 lp / mm, the MTF curve uniformly and smoothly decreases from the center to the edge of the field of view, and has qualified imaging quality and qualified detail resolution capability in the case of low frequency and high frequency.

[0334] Embodiment 23

[0335] Please refer to Figure 45 , which is a structural schematic diagram of the optical lens provided in the embodiment 23 of the application, and compared with the embodiment 1, the main difference of the embodiment is that the optical parameters such as the radius of curvature of each lens surface and the lens thickness are different.

[0336] The related parameters of each lens in the optical lens in the embodiment 23 are shown in Table 23-1.

[0337] Table 23-1

[0338]

[0339]

[0340] The surface profile parameters of the aspherical lens of the optical lens in Embodiment 23 are shown in Table 23-2.

[0341] Table 23-2

[0342] Surface number K A B C D E F S3 -2.64E+00 0.00E+00 0.00E+00 -6.25E-06 -1.52E-07 2.23E-09 -2.43E-11 S4 -1.43E+00 0.00E+00 0.00E+00 -8.02E-06 2.07E-08 -2.18E-10 2.99E-11 S10 -9.32E-01 0.00E+00 -3.86E-03 6.75E-06 2.84E-06 -1.42E-08 -9.61E-10 S11 -1.70E+00 0.00E+00 -3.13E-03 3.62E-05 3.61E-06 -9.02E-08 7.58E-10

[0343] It can be seen from Figure 46 that the MTF values of the present embodiment are all above 0.3 within the full field of view, and in the range of 0-120 lp / mm, the MTF curves uniformly and smoothly decrease from the center to the edge of the field of view, and have good imaging quality and good detail resolution ability in low and high frequency cases.

[0344] Embodiment 24

[0345] Please refer to Figure 47 , which is a structural schematic diagram of the optical lens provided in Embodiment 24 of the present application. Compared with Embodiment 1, the main difference of the present embodiment is that the optical parameters such as the radii of curvature of the lens surfaces and the lens thicknesses are different.

[0346] The related parameters of the lenses in the optical lens in Embodiment 24 are shown in Table 24-1.

[0347] Table 24-1

[0348]

[0349]

[0350] The surface profile parameters of the aspherical lens of the optical lens in Embodiment 24 are shown in Table 24-2.

[0351] Table 24-2

[0352] Surface number K A B C D E F S3 -1.92E+00 0.00E+00 0.00E+00 -7.91E-06 -3.05E-07 2.28E-09 -2.69E-11 S4 -5.71E-01 0.00E+00 0.00E+00 -1.14E-05 -9.69E-08 -1.42E-09 1.29E-10 S10 -1.71E+00 0.00E+00 3.36E-03 -2.24E-05 -3.88E-06 1.19E-07 -9.45E-10 S11 -2.86E+00 0.00E+00 3.99E-03 2.94E-06 -1.79E-06 1.45E-08 6.06E-10

[0353] It can be seen from Figure 48 that the MTF values of the present embodiment are all above 0.3 within the full field of view, and in the range of 0-120 lp / mm, the MTF curves uniformly and smoothly decrease from the center to the edge of the field of view, and have good imaging quality and good detail resolution ability in low and high frequency cases.

[0354] Embodiment 25

[0355] Please refer to Figure 49 , which is a structural schematic diagram of the optical lens provided in Embodiment 25 of the present application. Compared with Embodiment 1, the main difference of the present embodiment is that the optical parameters such as the radii of curvature of the lens surfaces and the lens thicknesses are different.

[0356] The related parameters of the lenses in the optical lens in embodiment 25 are shown in table 25-1.

[0357] Table 25-1

[0358]

[0359]

[0360] The surface type parameters of the aspheric lenses of the optical lens in embodiment 25 are shown in table 25-2.

[0361] Table 25-2

[0362] Surface number K A B C D E F S3 -2.64E+01 0.00E+00 0.00E+00 -5.31E-06 3.08E-07 -9.82E-09 1.20E-10 S4 3.82E+01 0.00E+00 0.00E+00 -5.70E-07 4.55E-08 -1.15E-09 1.41E-11 S10 -2.43E+01 0.00E+00 -3.95E-03 2.12E-04 -6.89E-06 1.43E-07 -1.53E-09 S11 -4.19E+00 0.00E+00 -3.48E-03 2.19E-04 -7.73E-06 1.85E-07 -2.21E-09

[0363] It can be seen from Figure 50 that the MTF values of the embodiment are all above 0.4 in the full field of view, and in the range of 0-120 lp / mm, the MTF curves uniformly and smoothly decrease from the center to the edge of the field of view, and have good imaging quality and good detail resolution ability in the low frequency and high frequency cases.

[0364] Embodiment 26

[0365] Please refer to Figure 51 , which is a structural schematic diagram of the optical lens provided in embodiment 26 of the application, and the embodiment mainly differs from embodiment 1 in that the optical parameters such as the radii of curvature of the surfaces of the lenses and the thicknesses of the lenses are different.

[0366] The related parameters of the lenses in the optical lens in embodiment 26 are shown in table 26-1.

[0367] Table 26-1

[0368]

[0369]

[0370] The surface type parameters of the aspheric lenses of the optical lens in embodiment 26 are shown in table 26-2.

[0371] Table 26-2

[0372] Surface number K A B C D E F S3 -4.76E-01 0.00E+00 0.00E+00 9.22E-07 -3.94E-08 7.36E-10 -4.80E-12 S4 4.78E-01 0.00E+00 0.00E+00 1.46E-06 -6.82E-08 1.42E-09 -1.04E-11 S10 6.79E+00 0.00E+00 -3.27E-03 1.44E-04 -4.31E-06 1.10E-07 -1.75E-09 S11 -6.18E+00 0.00E+00 -2.86E-03 1.51E-04 -5.01E-06 1.36E-07 -2.04E-09

[0373] It can be seen from Figure 52 that the MTF values of the embodiment are all above 0.4 in the full field of view, and in the range of 0-120 lp / mm, the MTF curves uniformly and smoothly decrease from the center to the edge of the field of view, and have good imaging quality and good detail resolution ability in the low frequency and high frequency cases.

[0374] Please refer to Table 27 for the optical characteristics of the above-mentioned embodiments, including the effective focal length f, the total track length TTL, the aperture value Fno, the image height IH, and the maximum field of view FOV of the optical lens, and the numerical values corresponding to each conditional expression in the embodiments.

[0375] Table 27

[0376]

[0377]

[0378] Table 27 (continued)

[0379] Table 27 (continued)

[0380]

[0381] Table 27 (continued)

[0382]

[0383]

[0384] Table 27 (continued)

[0385]

[0386]

[0387] In summary of the above embodiments, the optical lens provided by the present application improves the imaging quality of the optical lens, reduces aberration, and improves the imaging quality of the optical lens by optimizing the shape, optical power, thickness, and spacing of each lens, so that the optical lens has one or more advantages such as small aperture, large image surface, miniaturization, long focal length, and the like.

[0388] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0389] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. An optical lens comprising six lenses, characterized in that, Along the optical axis from the object side to the imaging plane, the following are included in sequence: A first lens with negative optical power; A second lens with positive optical power; A third lens with positive optical power has convex surfaces on both its object side and image side. The fourth lens has positive optical power and its object side is convex. The fifth lens has negative optical power and its image-side surface is concave. A sixth lens with negative optical power; The effective focal length f and the total optical length TTL of the optical lens satisfy: 1.6 <TTL / f<2.5; The object-side radius of curvature R5 and the image-side radius of curvature R6 of the third lens satisfy: 1.01 < |(R5-R6) / (R5+R6)|; The effective focal length f of the optical lens and the maximum field of view FOV and the true image height IH corresponding to the maximum field of view satisfy: 0.95 < (IH / 2) / (f×Tan(FOV / 2)) < 1.

05.

2. The optical lens according to claim 1, characterized in that, The effective focal length f and the total optical length TTL of the optical lens satisfy the following condition: 1.76≤TTL / f≤2.

37.

3. The optical lens according to claim 1, characterized in that, The effective focal length f of the optical lens and the true image height IH corresponding to the maximum field of view satisfy: 0.55 <IH / f<0.7。 4. The optical lens according to claim 1, characterized in that, The effective focal length f and the optical back focal length BFL of the optical lens satisfy: 0.2 <BFL / f<0.5。 5. The optical lens according to claim 1, characterized in that, The true image height IH, total optical length TTL, and maximum field of view FOV corresponding to the maximum field of view of the optical lens satisfy the following condition: 50.0 < 180° × TTL / (IH / 2) / (FOV / 2) < 80.

0.

6. The optical lens according to claim 1, characterized in that, The sum of the center thicknesses of the first to sixth lenses, ∑CT, and the total optical length TTL of the optical lens satisfy the following condition: 0.5 < ∑CT / TTL < 0.

8.

7. The optical lens according to claim 1, characterized in that, The maximum field of view (FOV) of the optical lens, the true image height (IH) corresponding to the maximum field of view, and the object-side aperture (D1) of the first lens satisfy the following condition: 3.0 <D1 / IH / tan(FOV / 2)<4.0。 8. The optical lens according to claim 1, characterized in that, The focal length f1 of the first lens and the effective focal length f of the optical lens satisfy: -5.36≤f1 / f<-1.

0.

9. The optical lens according to claim 1, characterized in that, The focal length f2 of the second lens and the effective focal length f of the optical lens satisfy: 0.9 <f2 / f≤6.88。 10. The optical lens according to claim 1, characterized in that, The focal length f6 of the sixth lens and the effective focal length f of the optical lens satisfy the condition: -6.73≤f6 / f<-1.

0.

11. The optical lens according to claim 1, characterized in that, The object-side radius of curvature R5 and the image-side radius of curvature R6 of the third lens satisfy: 1.01 < |(R5-R6) / (R5+R6)| ≤ 45.58; The effective focal length f of the optical lens and the maximum field of view FOV and the true image height IH corresponding to the maximum field of view satisfy: 0.97≤(IH / 2) / (f×Tan(FOV / 2))≤1.04.

Images