Optical lens and electronic equipment with same

Abstract

The invention provides an optical lens and electronic equipment with the same. According to the optical lens, a first lens has negative focal power, the first side face of the first lens is a convex face, and the second side face of the first lens is a concave face; the first side surface of the second lens is a concave surface, and the second side surface of the second lens is a convex surface; the third lens has positive focal power, the first side surface of the third lens is a convex surface, and the second side surface of the third lens is a convex surface; the fourth lens has positive focal power, and the second side surface of the fourth lens is a convex surface; the fifth lens has focal power; the first side surface of the sixth lens and the second side surface of the sixth lens have the same surface type; the seventh lens has focal power, and the second side face of the seventh lens is a convex face. The optical lens solves at least one of the problems that an optical lens in the prior art cannot give consideration to miniaturization and high resolution, is poor in pixel, is poor in imaging quality in a dark environment, and cannot be matched with a higher-pixel chip due to poor central angle resolution while meeting a large field angle.

Description

Technical Field

[0001] The present invention relates to the technical field of optical imaging equipment, and in particular to an optical lens and an electronic device having the same. Background Art

[0002] With the advancement of science and technology, the proportion of optical lenses used in various occasions has gradually increased, and users' performance requirements for optical lenses have gradually increased. As users' requirements for quality have gradually increased, optical lenses have gradually developed in the direction of miniaturization. Due to size limitations, optical lenses have poor resolution, small aperture, and poor imaging quality in dark environments. In addition, in order to obtain more information, optical lenses need to image objects within a large field of view, while also taking into account the characteristics of telephoto, requiring the central imaging area of ​​the optical lens to have a high angular magnification. With the rapid development of machine vision-based autonomous driving technology, automobile manufacturers have increasingly higher requirements for the imaging quality of visual images. In-vehicle CIS (COMS Image Sensor, complementary metal oxide semiconductor image sensor) chip manufacturers have launched higher-resolution pixel sensors. The market urgently needs miniaturized, stable and reliable in-vehicle front-view lenses that can adapt to high-pixel chips.

[0003] The vehicle-mounted lens needs to image a larger field of view. At the same time, in order to meet the requirements of specific usage scenarios, it is necessary to take into account the telephoto, requiring the central imaging area of ​​the lens to have a higher angular magnification; in order to ensure clear imaging, the vehicle needs a higher resolution. The current high-pixel vehicle-mounted front-view lens is mainly 8 million pixel resolution, which cannot match higher pixel chips, such as 17M pixel sensors. As users' requirements for aesthetics gradually increase, the external lens of the car is usually installed in a hidden position and the size is required to be reduced so that the vehicle-mounted lens and the car can be integrated. Therefore, the vehicle-mounted lens is gradually developing in the direction of miniaturization, resulting in insufficient resolution of the vehicle-mounted lens. At the same time, the aperture size of small-sized optical lenses is often small, resulting in insufficient illumination on the sensor surface of the vehicle-mounted lens in dark environments, which is easily affected by noise. In order to adapt to driving environments with insufficient light such as rainy days and nights, the vehicle-mounted lens needs a large amount of light to ensure the imaging quality. Due to the limitation of the overall size, the vehicle-mounted lens is often very small in aperture, and the sensor surface illumination is insufficient in dark environments, which is easily affected by noise.

[0004] In other words, the optical lenses in the prior art have problems such as the inability to achieve both miniaturization and high resolution, poor pixels, poor imaging quality in dark environments, and poor central angle resolution that cannot match higher pixel chips while meeting a large field of view. Summary of the invention

[0005] The main purpose of the present invention is to provide an optical lens and an electronic device having the same, so as to solve at least one of the problems of the optical lens in the prior art that miniaturization and high resolution cannot be taken into account at the same time, pixel difference, poor imaging quality in dark environments, and poor central angle resolution that cannot match higher pixel chips while meeting a large field of view.

[0006] To achieve the above-mentioned object, according to one aspect of the present invention, there is provided an optical lens, comprising: a first lens, the first lens having negative optical power, a first side surface of the first lens being a convex surface, and a second side surface of the first lens being a concave surface; a second lens, the second lens having optical power, a first side surface of the second lens being a concave surface, and a second side surface of the second lens being a convex surface; a third lens, the third lens having positive optical power, a first side surface of the third lens being a convex surface, and a second side surface of the third lens being a convex surface; a fourth lens, the fourth lens having positive optical power, and a second side surface of the fourth lens being a convex surface; a fifth lens, the fifth lens having optical power; a sixth lens, the sixth lens having optical power, and a first side surface of the sixth lens and a second side surface of the sixth lens have the same surface shape; and a seventh lens, the seventh lens having optical power, and a second side surface of the seventh lens being a convex surface.

[0007] Furthermore, the second lens has positive refractive power.

[0008] Furthermore, the second lens has negative refractive power.

[0009] Furthermore, the first side surface of the fourth lens is a concave surface.

[0010] Furthermore, the first side surface of the fourth lens is a convex surface.

[0011] Furthermore, the fifth lens has positive optical power, the first side surface of the fifth lens is a convex surface, and the second side surface of the fifth lens is a convex surface.

[0012] Furthermore, the fifth lens has negative optical power, the first side surface of the fifth lens is a convex surface, and the second side surface of the fifth lens is a concave surface.

[0013] Furthermore, the fifth lens has negative optical power, the first side surface of the fifth lens is a concave surface, and the second side surface of the fifth lens is a concave surface.

[0014] Furthermore, the sixth lens has positive power, the first side surface of the sixth lens is a convex surface, and the second side surface of the sixth lens is a convex surface.

[0015] Furthermore, the sixth lens has negative optical power, the first side surface of the sixth lens is a concave surface, and the second side surface of the sixth lens is a concave surface.

[0016] Furthermore, the seventh lens has positive optical power, and the first side surface of the seventh lens is a convex surface.

[0017] Furthermore, the seventh lens has negative optical power, and the first side surface of the seventh lens is a concave surface.

[0018] Furthermore, the first lens, the second lens, the third lens and the seventh lens are all aspherical lenses.

[0019] Furthermore, the fifth lens and the sixth lens are a cemented lens.

[0020] Furthermore, the optical lens also includes a stop, and the stop is arranged between the second lens and the third lens.

[0021] Further, the first side surface of the seventh lens has an inflection point, and the second side surface of the seventh lens has an inflection point.

[0022] Further, the first side surface of the first lens has an inflection point.

[0023] Further, the first side surface of the first lens has an inflection point, the first side surface of the seventh lens has an inflection point, and the second side surface of the seventh lens has an inflection point.

[0024] Further, the first side surface of the first lens has an inflection point.

[0025] Furthermore, the total length TTL of the optical lens and the focal length F of the optical lens satisfy: TTL / F≤6.

[0026] Furthermore, an entrance pupil diameter EPND of the optical lens and a focal length value F of the optical lens satisfy: F / EPND≤2.2.

[0027] Furthermore, the total length TTL of the optical lens and the maximum aperture DMAX of all lenses in the optical lens satisfy: TTL / DMAX≤5.

[0028] Furthermore, the total length TTL of the optical lens, the maximum field of view FOV of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens satisfy: TTL / H / FOV≤0.06.

[0029] Furthermore, the focal length value F of the optical lens, the maximum field of view FOV of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy: (FOV×F) / H≥80.

[0030] Furthermore, the maximum aperture DMAX of all lenses in the optical lens, the maximum field of view FOV of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy: DMAX / H / FOV≤0.2.

[0031] Furthermore, the radian θ of the maximum field angle of the optical lens, the focal length F of the optical lens and the image height H corresponding to the maximum field angle of the optical lens satisfy: (H / 2) / (F*tan(θ / 2))≥0.1.

[0032] Furthermore, the focal length value F of the optical lens and the image height H corresponding to the maximum field angle of the optical lens satisfy: 0.3≤F / H≤2.

[0033] Furthermore, an opening angle arctan(1 / K(S1)) at a maximum field angle of the first side surface of the first lens satisfies: arctan(1 / K(S1))≤12.

[0034] Furthermore, the vector height SAG1 of the first side surface of the first lens at the maximum field angle and the maximum clear aperture D1 of the first side surface of the first lens corresponding to the optical lens at the maximum field angle satisfy: arctan(SAG1 / D1)≤0.6.

[0035] Furthermore, the vector height SAG2 of the second side surface of the first lens at the maximum field angle and the maximum clear aperture D2 of the second side surface of the first lens corresponding to the optical lens at the maximum field angle satisfy: arctan(SAG2 / D2)≥0.05.

[0036] Furthermore, the vector height SAG11 of the second side surface of the fifth lens at the maximum field angle and the maximum clear aperture D11 of the second side surface of the fifth lens corresponding to the optical lens at the maximum field angle satisfy: |arctan(SAG11 / D11)|≥0.08.

[0037] Furthermore, a radius of curvature R14 of the second side surface of the seventh lens and a focal length F of the optical lens satisfy: R14 / F≤-0.001.

[0038] Furthermore, the focal length F3 of the third lens element and the focal length F4 of the fourth lens element satisfy: F3 / F4≤5.

[0039] Furthermore, the total length TTL of the optical lens and the center distance d67 of the sixth lens and the seventh lens satisfy: d67 / TTL≥0.03.

[0040] Furthermore, a curvature radius R3 of the first side surface of the second lens and a curvature radius R4 of the second side surface of the second lens satisfy: R3 / R4≥0.01.

[0041] Further, the focal length F6 of the sixth lens element and the focal length F7 of the seventh lens element satisfy: F7 / F6≤-0.001.

[0042] According to another aspect of the present invention, there is provided an optical lens, comprising: a first lens, the first lens having negative optical power; a second lens, the second lens having optical power; a third lens, the third lens having positive optical power; a fourth lens, the fourth lens having positive optical power; a fifth lens, the fifth lens having optical power; a sixth lens, the sixth lens having optical power; a seventh lens, the seventh lens having optical power; a curvature radius R14 of the second side surface of the seventh lens and the focal length F of the optical lens satisfy the following condition: R14 / F≤-0.001.

[0043] Furthermore, the first side surface of the first lens is a convex surface, and the second side surface of the first lens is a concave surface.

[0044] Furthermore, the second lens has positive optical power, the first side surface of the second lens is a concave surface, and the second side surface of the second lens is a convex surface.

[0045] Furthermore, the second lens has negative optical power, the first side surface of the second lens is a concave surface, and the second side surface of the second lens is a convex surface.

[0046] Furthermore, the first side surface of the third lens is a convex surface, and the second side surface of the third lens is a convex surface.

[0047] Furthermore, the first side surface of the fourth lens is a concave surface, and the second side surface of the fourth lens is a convex surface.

[0048] Furthermore, the first side surface of the fourth lens is a convex surface, and the second side surface of the fourth lens is a convex surface.

[0049] Furthermore, the fifth lens has positive optical power, the first side surface of the fifth lens is a convex surface, and the second side surface of the fifth lens is a convex surface.

[0050] Furthermore, the fifth lens has negative optical power, the first side surface of the fifth lens is a convex surface, and the second side surface of the fifth lens is a concave surface.

[0051] Furthermore, the fifth lens has negative optical power, the first side surface of the fifth lens is a concave surface, and the second side surface of the fifth lens is a concave surface.

[0052] Furthermore, the sixth lens has positive power, the first side surface of the sixth lens is a convex surface, and the second side surface of the sixth lens is a convex surface.

[0053] Furthermore, the sixth lens has negative optical power, the first side surface of the sixth lens is a concave surface, and the second side surface of the sixth lens is a concave surface.

[0054] Furthermore, the seventh lens has positive power, the first side surface of the seventh lens is a convex surface, and the second side surface of the seventh lens is a convex surface.

[0055] Furthermore, the seventh lens has negative optical power, the first side surface of the seventh lens is a concave surface, and the second side surface of the seventh lens is a convex surface.

[0056] Furthermore, the first lens, the second lens, the third lens and the seventh lens are all aspherical lenses.

[0057] Furthermore, the fifth lens and the sixth lens are a cemented lens.

[0058] Furthermore, the optical lens also includes a stop, and the stop is arranged between the second lens and the third lens.

[0059] Further, the first side surface of the seventh lens has an inflection point, and the second side surface of the seventh lens has an inflection point.

[0060] Further, the first side surface of the first lens has an inflection point.

[0061] Further, the first side surface of the first lens has an inflection point, the first side surface of the seventh lens has an inflection point, and the second side surface of the seventh lens has an inflection point.

[0062] Further, the first side surface of the first lens has an inflection point.

[0063] Furthermore, the total length TTL of the optical lens and the focal length F of the optical lens satisfy: TTL / F≤6.

[0064] Furthermore, an entrance pupil diameter EPND of the optical lens and a focal length value F of the optical lens satisfy: F / EPND≤2.2.

[0065] Furthermore, the total length TTL of the optical lens and the maximum aperture DMAX of all lenses in the optical lens satisfy: TTL / DMAX≤5.

[0066] Furthermore, the total length TTL of the optical lens, the maximum field of view FOV of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens satisfy: TTL / H / FOV≤0.06.

[0067] Furthermore, the focal length value F of the optical lens, the maximum field of view FOV of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy: (FOV×F) / H≥80.

[0068] Furthermore, the maximum aperture DMAX of all lenses in the optical lens, the maximum field of view FOV of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy: DMAX / H / FOV≤0.2.

[0069] Furthermore, the radian θ of the maximum field angle of the optical lens, the focal length F of the optical lens and the image height H corresponding to the maximum field angle of the optical lens satisfy: (H / 2) / (F*tan(θ / 2))≥0.1.

[0070] Furthermore, the focal length value F of the optical lens and the image height H corresponding to the maximum field angle of the optical lens satisfy: 0.3≤F / H≤2.

[0071] Furthermore, an opening angle arctan(1 / K(S1)) at a maximum field angle of the first side surface of the first lens satisfies: arctan(1 / K(S1))≤12.

[0072] Furthermore, the vector height SAG1 of the first side surface of the first lens at the maximum field angle and the maximum clear aperture D1 of the first side surface of the first lens corresponding to the optical lens at the maximum field angle satisfy: arctan(SAG1 / D1)≤0.6.

[0073] Furthermore, the vector height SAG2 of the second side surface of the first lens at the maximum field angle and the maximum clear aperture D2 of the second side surface of the first lens corresponding to the optical lens at the maximum field angle satisfy: arctan(SAG2 / D2)≥0.05.

[0074] Furthermore, the vector height SAG11 of the second side surface of the fifth lens at the maximum field angle and the maximum clear aperture D11 of the second side surface of the fifth lens corresponding to the optical lens at the maximum field angle satisfy: |arctan(SAG11 / D11)|≥0.08.

[0075] Further, the focal length F6 of the sixth lens element and the focal length F7 of the seventh lens element satisfy: F7 / F6≤-0.001.

[0076] Furthermore, the focal length F3 of the third lens element and the focal length F4 of the fourth lens element satisfy: F3 / F4≤5.

[0077] Furthermore, the total length TTL of the optical lens and the center distance d67 of the sixth lens and the seventh lens satisfy: d67 / TTL≥0.03.

[0078] Furthermore, a curvature radius R3 of the first side surface of the second lens and a curvature radius R4 of the second side surface of the second lens satisfy: R3 / R4≥0.01.

[0079] According to another aspect of the present invention, an electronic device is provided, comprising the above-mentioned optical lens and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

[0080] According to the technical solution of the present invention, the optical lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, wherein the first lens has a negative optical power, a first side surface of the first lens is a convex surface, and a second side surface of the first lens is a concave surface; the second lens has an optical power, a first side surface of the second lens is a concave surface, and a second side surface of the second lens is a convex surface; the third lens has a positive optical power, a first side surface of the third lens is a convex surface, and a second side surface of the third lens is a convex surface; the fourth lens has a positive optical power, and a second side surface of the fourth lens is a convex surface; the fifth lens has an optical power; the sixth lens has an optical power, and a first side surface of the sixth lens and a second side surface of the sixth lens have the same surface shape; the seventh lens has an optical power, and a second side surface of the seventh lens is a convex surface.

[0081] The first lens has negative focal length, the first side of the first lens is convex, and the second side of the first lens is concave. The first lens is set to have a negative focal length to have a divergent effect on the light, and the first side of the first lens is convex to the first side, so that the light has a smaller incident angle, which is conducive to more light entering the optical system and achieving a large field of view. The second side of the first lens is set to a concave surface, which can control the trend of the edge of the first lens at a large angle, so that the rear optical system has a larger light receiving surface. The first lens is an aspherical lens, and the curvature radius values ​​of the first side and the second side of the first lens are relatively close, so that the first lens is approximately a concentric meniscus lens, so that the focal length of the first lens is longer, which is conducive to achieving the telephoto requirements of the optical lens; at the same time, the side of the first lens is convex in the center, and the edge angle is small, which is conducive to collecting the edge field of view light, compressing the height of the edge field of view light incident on the image plane, and helping to achieve the center large angle resolution and resolve more detailed information. In addition, the first lens preferably uses a high refractive index material, which is conducive to reducing the front port diameter and improving the imaging quality.

[0082] The second lens has positive focal length, the first side of the second lens is concave, and the second side of the second lens is convex. The second lens has positive focal length and has a convergence effect on light. The second lens is a meniscus shape concave toward the first side, which converges the light entering through the first lens. At the same time, the third lens can effectively reduce the projection height of the light on the lens, which is conducive to reducing the overall aperture of the optical lens, achieving miniaturization, and reducing costs. At the same time, because the curvature of the first side of the second lens is similar to that of the second side of the second lens, it is conducive to the smooth transition of light on the second lens, reducing field curvature and sensitivity, and improving imaging quality.

[0083] The second lens has negative focal length, the first side of the second lens is concave, and the second side of the second lens is convex. The second lens has negative focal length and has a divergent effect on light. The second lens is a meniscus concave toward the first side, further diverging the light passing through the first lens. When used with the third lens, it can effectively reduce the projection height of the light on the lens, which is beneficial to reduce the overall aperture of the optical lens, achieve miniaturization, and reduce costs. At the same time, because the curvature of the first side of the second lens is similar to that of the second side of the second lens, it is beneficial to the smooth transition of light on the second lens, reduce field curvature and sensitivity, and improve imaging quality.

[0084] The third lens has positive focal length, the first side surface of the third lens is convex, and the second side surface of the third lens is convex. The third lens with positive focal length has a convergence effect on light, which allows the divergent light to smoothly enter the rear optical system on the one hand, and on the other hand, it reduces the light incident on the rear optical system, reduces the rear port diameter, and is conducive to the miniaturization of the optical lens. At the same time, the second side surface of the third lens is convex to converge the light, which is conducive to the reduction of the rear port diameter of the optical lens and realize miniaturization.

[0085] The fourth lens has positive focal length, the first side surface of the fourth lens is concave, and the second side surface of the fourth lens is convex. The fourth lens with positive focal length further converges the light, allowing the light to smoothly transition to the rear optical system, improving the imaging quality of the optical lens, and further suppressing the light trend, which is conducive to the miniaturization of the rear optical system and the further reduction of the front port diameter.

[0086] The fourth lens has positive focal length, the first side of the fourth lens is convex, and the second side of the fourth lens is convex. The fourth lens with positive focal length further converges the light, allowing the light to smoothly transition to the rear optical system, improving the imaging quality of the optical lens, and at the same time, the convergence of the light by the fourth lens can realize a larger aperture, achieve a larger amount of light entering, and increase the brightness of the image plane.

[0087] The fifth lens has positive focal power, the first side surface of the fifth lens is convex, and the second side surface of the fifth lens is convex. The fifth lens with positive focal power converges light, and is used in conjunction with the third lens and the fourth lens with positive focal power to further reduce the incident height of light, reduce the aperture of the rear optical system, and achieve miniaturization.

[0088] The fifth lens has negative optical power, the first side surface of the fifth lens is convex, and the second side surface of the fifth lens is concave. There are two lenses with positive optical power arranged continuously in front of the fifth lens, both of which have a convergence effect on light, and while continuously changing the trend of light, they also bring about large aberrations. The fifth lens with negative optical power has a divergent effect on light. By controlling the focal length of the fifth lens, various aberrations brought by the positive lens in front can be effectively corrected, thereby improving the imaging quality of the optical lens.

[0089] The fifth lens has negative optical power, the first side of the fifth lens is concave, and the second side of the fifth lens is concave. There are two lenses with positive optical power arranged continuously in front of the fifth lens, both of which have a convergence effect on light, and while continuously changing the trend of light, they also bring about large aberrations. The fifth lens with negative optical power has a divergent effect on light. By controlling the shape and focal length of the fifth lens, various aberrations brought by the positive lens in front can be effectively corrected, the imaging quality of the optical lens can be improved, and the effective aperture of the rear optical system can be adjusted at the same time.

[0090] The sixth lens has positive focal power, the first side of the sixth lens is convex, and the second side of the sixth lens is convex. The sixth lens with positive focal power has a convergence effect on light, and cooperates with the fifth lens with negative focal power to further reduce aberrations, and at the same time, the light can be effectively and smoothly converged at the end, so that the light can reach the imaging surface smoothly, reducing the overall weight and cost. The second side of the sixth lens is convex, and cooperates with the seventh lens with a convex first side, so that the light can transition smoothly and reduce tolerance sensitivity. The fifth lens and the sixth lens can be glued together to eliminate chromatic aberration, and the chromatic aberration of the system can be balanced by residual high-order chromatic aberration. In addition, the glued lens is composed of a positive lens and a negative lens, wherein the positive lens has a lower refractive index, and the negative lens has a higher refractive index relative to the positive lens. The combination of high and low refractive indices is conducive to the rapid transition of the front light, increasing the aperture, increasing the amount of light passing, and improving the imaging quality in a dark environment. In addition, the use of glued lenses in optical lenses is conducive to a compact overall structure, conducive to meeting the requirements of miniaturization, and at the same time reducing the tolerance sensitivity problems such as tilt and eccentricity generated by the lens unit during the assembly process.

[0091] The sixth lens has negative focal length, the first side of the sixth lens is concave, and the second side of the sixth lens is concave. The sixth lens with negative focal length has a divergent effect on light, and can reduce aberration when combined with the fifth lens with positive focal length. At the same time, the second side of the sixth lens is concave, and when combined with the convex surface of the seventh lens, the field curvature can be further reduced, so that the light reaches the imaging surface smoothly, and the overall weight and cost can be reduced. The fifth lens and the sixth lens can be glued together to eliminate chromatic aberration, and the chromatic aberration of the system can be balanced by residual high-order chromatic aberration. In addition, the glued lens is composed of a positive lens and a negative lens, wherein the positive lens has a lower refractive index, and the negative lens has a higher refractive index relative to the positive lens. The combination of high and low refractive indices is conducive to the rapid transition of the front light, increases the aperture, increases the amount of light passing, and is conducive to improving the imaging quality in dark environments. In addition, the use of glued lenses in optical lenses is conducive to a compact overall structure, is conducive to meeting the requirements of miniaturization, and reduces the tolerance sensitivity problems such as tilt and eccentricity generated by the lens unit during the assembly process.

[0092] The seventh lens has positive focal length, the first side surface of the seventh lens is convex, and the second side surface of the seventh lens is convex. The seventh lens has positive focal length, the second side surface of the seventh lens is a convex surface bent toward the first side, and the light emitted through the second side surface of the seventh lens has a large deflection angle. The sixth lens with negative focal length can effectively reduce aberrations, correct field curvature and astigmatism, and make the light passing through the cemented lens smoothly transition to the imaging surface. The seventh lens is an aspherical lens located in front of the imaging surface, and the edge field of view introduces large distortion, which can improve the central angle resolution, and can further correct astigmatism and field curvature, thereby improving the resolution of the optical lens.

[0093] The seventh lens has negative optical power, the first side surface of the seventh lens is a concave surface, and the second side surface of the seventh lens is a convex surface. The seventh lens has negative optical power, the second side surface of the seventh lens is a convex surface bent toward the first side, and the light emitted through the second side surface of the seventh lens has a large deflection angle. The sixth lens with negative optical power can effectively reduce aberrations, correct field curvature and astigmatism, and make the light passing through the cemented lens smoothly transition to the imaging surface. The seventh lens is an aspherical lens located in front of the imaging surface, and the edge field of view introduces large distortion, which can improve the central angle resolution, and can further correct astigmatism and field curvature, thereby improving the resolution of the optical lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0094] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0095] Figure 1 A schematic diagram of the structure of an optical lens according to Example 1 of the present invention is shown;

[0096] Figure 2 A schematic diagram of the optical lens structure of Example 2 of the present invention is shown;

[0097] Figure 3 A schematic diagram of the structure of an optical lens according to Example 3 of the present invention is shown;

[0098] Figure 4 A schematic diagram of the structure of an optical lens according to Example 4 of the present invention is shown;

[0099] Figure 5 A schematic diagram of the structure of an optical lens according to Example 5 of the present invention is shown;

[0100] Figure 6 A schematic diagram of the structure of an optical lens according to Example 6 of the present invention is shown;

[0101] Figure 7 A schematic diagram of the optical lens structure of Example 7 of the present invention is shown;

[0102] Figure 8 A schematic diagram of the structure of an optical lens according to Example 8 of the present invention is shown;

[0103] Fig. 9 A schematic diagram of the structure of an optical lens according to Example 9 of the present invention is shown;

[0104] Fig.10 A schematic diagram of the optical lens structure of Example 10 of the present invention is shown. DETAILED DESCRIPTION

[0105] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0106] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0107] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0108] It should be noted that in this specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teaching of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0109] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the shapes of the spherical or aspherical surfaces shown in the drawings. The drawings are for illustration only and are not drawn strictly to scale.

[0110] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens close to the object side is called the first side of the lens, and the surface of each lens close to the image side is called the second side of the lens. The judgment of the surface shape in the paraxial region can be based on the judgment method of the general knowledge in this field, and the positive and negative R value (R refers to the radius of curvature of the paraxial region, usually refers to the R value on the lens database (lens data) in the optical software) is used to judge the concave and convex. For the first side, when the R value is positive, it is judged as a convex surface, and when the R value is negative, it is judged as a concave surface; for the second side, when the R value is positive, it is judged as a concave surface, and when the R value is negative, it is judged as a convex surface.

[0111] This application generally protects an ordinary optical lens. In the accompanying drawings, the left side is the object side and the right side is the image side, that is, the first side is the object side and the second side is the image side.

[0112] In an exemplary embodiment, the optical lens provided by the present application can be used as, for example, a vehicle-mounted lens. Light from the object side can form an image on the image side.

[0113] When the optical lens in the present application is applied to a projection lens or a radar transmitting lens, the left side is the imaging side and the right side is the image source side. In an exemplary embodiment, the optical lens provided in the present application can be used as, for example, a projection lens or a laser radar transmitting end lens. In this case, the image side of the optical lens can be the image source side, and the object side can be the imaging side. Light from the image source side can be imaged on the imaging side. The imaging surface of the optical lens is the image source surface.

[0114] In order to solve at least one of the problems in the prior art of optical lenses that miniaturization and high resolution cannot be taken into account at the same time, pixel difference, poor imaging quality in dark environments, and poor central angle resolution that cannot match higher pixel chips while meeting a large field of view, the present invention provides an optical lens and an electronic device having the same.

[0115] Embodiment 1

[0116] like Figures 1 to 10As shown, the optical lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, the first lens has negative optical power, the first side surface of the first lens is convex, and the second side surface of the first lens is concave; the second lens has optical power, the first side surface of the second lens is concave, and the second side surface of the second lens is convex; the third lens has positive optical power, the first side surface of the third lens is convex, and the second side surface of the third lens is convex; the fourth lens has positive optical power, and the second side surface of the fourth lens is convex; the fifth lens has optical power; the sixth lens has optical power, and the first side surface of the sixth lens and the second side surface of the sixth lens have the same surface shape; the seventh lens has optical power, and the second side surface of the seventh lens is convex.

[0117] The first lens has negative focal length, the first side of the first lens is convex, and the second side of the first lens is concave. The first lens is set to have a negative focal length to have a divergent effect on the light, and the first side of the first lens is convex to the first side, so that the light has a smaller incident angle, which is conducive to more light entering the optical system and achieving a large field of view. The second side of the first lens is set to a concave surface, which can control the trend of the edge of the first lens at a large angle, so that the rear optical system has a larger light receiving surface. The first lens is an aspherical lens, and the curvature radius values ​​of the first side and the second side of the first lens are relatively close, so that the first lens is approximately a concentric meniscus lens, so that the focal length of the first lens is longer, which is conducive to achieving the telephoto requirements of the optical lens; at the same time, the side of the first lens is convex in the center, and the edge angle is small, which is conducive to collecting the edge field of view light, compressing the height of the edge field of view light incident on the image plane, and helping to achieve the center large angle resolution and resolve more detailed information. In addition, the first lens preferably uses a high refractive index material, which is conducive to reducing the front port diameter and improving the imaging quality.

[0118] Optionally, the second lens has positive focal length, the first side of the second lens is concave, and the second side of the second lens is convex. The second lens has positive focal length and has a convergence effect on light. The second lens is a meniscus shape concave toward the first side, which converges the light entering through the first lens. At the same time, the third lens can effectively reduce the projection height of the light on the lens, which is conducive to reducing the overall aperture of the optical lens, achieving miniaturization, and reducing costs. At the same time, because the curvature of the first side of the second lens is similar to that of the second side of the second lens, it is conducive to the smooth transition of light on the second lens, reducing field curvature and sensitivity, and improving imaging quality.

[0119] Optionally, the second lens has negative focal length, the first side of the second lens is concave, and the second side of the second lens is convex. The second lens has negative focal length and has a divergent effect on light. The second lens is a meniscus concave toward the first side, further diverging the light passing through the first lens. When used with the third lens, the projection height of the light on the lens can be effectively reduced, which is beneficial to reducing the overall aperture of the optical lens, achieving miniaturization, and reducing costs. At the same time, because the curvature of the first side of the second lens is similar to that of the second side of the second lens, it is beneficial to the smooth transition of light on the second lens, reducing field curvature and sensitivity, and improving imaging quality.

[0120] The third lens has positive focal length, the first side surface of the third lens is convex, and the second side surface of the third lens is convex. The third lens with positive focal length has a convergence effect on light, which allows the divergent light to smoothly enter the rear optical system on the one hand, and on the other hand, it reduces the light incident on the rear optical system, reduces the rear port diameter, and is conducive to the miniaturization of the optical lens. At the same time, the second side surface of the third lens is convex to converge the light, which is conducive to the reduction of the rear port diameter of the optical lens and realize miniaturization.

[0121] Optionally, the fourth lens has positive focal length, the first side surface of the fourth lens is concave, and the second side surface of the fourth lens is convex. The fourth lens with positive focal length further converges the light, allowing the light to smoothly transition to the rear optical system, improving the imaging quality of the optical lens, and further suppressing the light trend, which is conducive to the miniaturization of the rear optical system and the further reduction of the front port diameter.

[0122] Optionally, the fourth lens has positive focal length, the first side surface of the fourth lens is a convex surface, and the second side surface of the fourth lens is a convex surface. The fourth lens with positive focal length further converges the light, so that the light smoothly transitions to the rear optical system, improving the imaging quality of the optical lens, and at the same time, the convergence of the light by the fourth lens can realize a larger aperture, a larger amount of light entering, and an increased brightness of the image plane.

[0123] Optionally, the fifth lens has positive focal power, the first side surface of the fifth lens is convex, and the second side surface of the fifth lens is convex. The fifth lens with positive focal power converges light, and is used in conjunction with the third lens and the fourth lens with positive focal power to further reduce the incident height of light, reduce the aperture of the rear optical system, and achieve miniaturization.

[0124] Optionally, the fifth lens has negative optical power, the first side surface of the fifth lens is convex, and the second side surface of the fifth lens is concave. There are two lenses with positive optical power arranged continuously in front of the fifth lens, both of which have a convergence effect on light, and while continuously changing the trend of light, they also bring about large aberrations. The fifth lens with negative optical power has a divergent effect on light. By controlling the focal length of the fifth lens, various aberrations brought by the positive lens in front can be effectively corrected, thereby improving the imaging quality of the optical lens.

[0125] Optionally, the fifth lens has negative optical power, the first side surface of the fifth lens is concave, and the second side surface of the fifth lens is concave. There are two lenses with positive optical power arranged continuously in front of the fifth lens, both of which have a convergence effect on light, and while continuously changing the trend of light, they also bring about large aberrations. The fifth lens with negative optical power has a divergent effect on light. By controlling the shape and focal length of the fifth lens, various aberrations brought by the positive lens in front can be effectively corrected, the imaging quality of the optical lens can be improved, and the effective aperture of the rear optical system can be adjusted at the same time.

[0126] Optionally, the sixth lens has positive power, the first side surface of the sixth lens is convex, and the second side surface of the sixth lens is convex. The sixth lens with positive power has a convergence effect on light, and cooperates with the fifth lens with negative power to further reduce aberrations, while allowing the light to converge effectively and smoothly at the end, so that the light reaches the imaging surface smoothly, reducing the overall weight and cost. The second side surface of the sixth lens is convex, and cooperates with the seventh lens with a convex first side surface, so that the light can transition smoothly and reduce tolerance sensitivity. The fifth lens and the sixth lens can be glued together to eliminate chromatic aberration, and the chromatic aberration of the system can be balanced by residual high-order chromatic aberration. In addition, the glued lens is composed of a positive lens and a negative lens, wherein the positive lens has a lower refractive index, and the negative lens has a higher refractive index than the positive lens. The combination of high and low refractive indices is beneficial to the rapid transition of the front light, increases the aperture of the aperture, increases the amount of light passing, and is beneficial to improving the imaging quality in dark environments. In addition, the use of glued lenses in optical lenses is beneficial to the overall compact structure, which is beneficial to meeting the requirements of miniaturization, and at the same time reduces the tolerance sensitivity problems such as tilt and eccentricity generated by the lens unit during the assembly process.

[0127] Optionally, the sixth lens has negative focal length, the first side of the sixth lens is concave, and the second side of the sixth lens is concave. The sixth lens with negative focal length has a divergent effect on light, and can reduce aberrations when combined with the fifth lens with positive focal length. At the same time, the second side of the sixth lens is concave, and when combined with the convex surface of the seventh lens, the field curvature can be further reduced, so that the light reaches the imaging surface smoothly, and the overall weight and cost are reduced. The fifth lens and the sixth lens can be glued together to eliminate chromatic aberration, and the chromatic aberration of the system can be balanced by residual high-order chromatic aberration. In addition, the glued lens is composed of a positive lens and a negative lens, wherein the positive lens has a lower refractive index, and the negative lens has a higher refractive index relative to the positive lens. The combination of high and low refractive indices is conducive to the rapid transition of the front light, increases the aperture, increases the amount of light passing, and is conducive to improving the imaging quality in a dark environment. In addition, the use of glued lenses in optical lenses is conducive to a compact overall structure, is conducive to meeting the requirements of miniaturization, and reduces the tolerance sensitivity problems such as tilt and eccentricity generated by the lens unit during the assembly process.

[0128] Optionally, the seventh lens has positive focal length, the first side surface of the seventh lens is a convex surface, and the second side surface of the seventh lens is a convex surface. The seventh lens has positive focal length, the second side surface of the seventh lens is a convex surface bent toward the first side, and the light emitted through the second side surface of the seventh lens has a large deflection angle. The sixth lens with negative focal length can effectively reduce aberrations, correct field curvature and astigmatism, and make the light passing through the cemented lens smoothly transition to the imaging surface. The seventh lens is an aspherical lens located in front of the imaging surface, and the edge field of view introduces large distortion, which can improve the central angle resolution, and can further correct astigmatism and field curvature, thereby improving the resolution of the optical lens.

[0129] Optionally, the seventh lens has negative focal length, the first side surface of the seventh lens is a concave surface, and the second side surface of the seventh lens is a convex surface. The seventh lens has negative focal length, the second side surface of the seventh lens is a convex surface bent toward the first side, and the light emitted through the second side surface of the seventh lens has a large deflection angle. The sixth lens with negative focal length can effectively reduce aberrations, correct field curvature and astigmatism, and make the light passing through the cemented lens smoothly transition to the imaging surface. The seventh lens is an aspherical lens located in front of the imaging surface, and the edge field of view introduces large distortion, which can improve the central angle resolution, and can further correct astigmatism and field curvature, thereby improving the resolution of the optical lens.

[0130] In this embodiment, the first lens, the second lens, the third lens and the seventh lens are all aspherical lenses. Such an arrangement is conducive to achieving a large field angle, a large image height, a large central angular resolution, correcting field curvature and astigmatism, and improving resolution.

[0131] In this embodiment, the fifth lens and the sixth lens are cemented lenses. The cemented lens is conducive to eliminating the chromatic aberration of the optical lens, while making the overall structure of the optical lens more compact, meeting the requirements of miniaturization, and reducing the tolerance sensitivity problems such as tilt and eccentricity of the lens unit caused by the assembly process. The cemented lens is composed of a positive lens and a negative lens, wherein the positive lens has a lower refractive index and the negative lens has a higher refractive index relative to the positive lens. The combination of high and low refractive indices is conducive to the rapid transition of the front light, reducing aberrations, increasing the aperture, increasing the amount of light passing, and improving the imaging quality in dark environments.

[0132] In this embodiment, the optical lens further includes a stop, which is disposed between the second lens and the third lens. Placing the stop between the second lens and the third lens reasonably distributes the height of the front and rear light groups, shortens the total length of the optical lens, and reduces the aperture of the front and rear lens groups.

[0133] Optionally, the first side surface of the seventh lens has an inflection point, and the second side surface of the seventh lens has an inflection point. This arrangement is conducive to balancing the aberrations of the central field of view and the edge field of view, and improving the resolution.

[0134] Optionally, the first side surface of the first lens has an inflection point. The setting of the inflection point is conducive to balancing the aberration of the central field of view and the edge field of view, and improving the resolution of the optical lens.

[0135] Optionally, the first side surface of the first lens has an inflection point, the first side surface of the seventh lens has an inflection point, and the second side surface of the seventh lens has an inflection point. The setting of the inflection point is conducive to balancing the aberration of the central field of view and the edge field of view, and improving the resolution of the optical lens.

[0136] Optionally, the first side surface of the first lens has an inflection point. The setting of the inflection point is conducive to balancing the aberration of the central field of view and the edge field of view, and improving the resolution of the optical lens.

[0137] In this embodiment, the total length TTL of the optical lens and the focal length F of the optical lens satisfy: TTL / F≤6. Controlling the ratio of the total length of the optical lens to the focal length of the optical lens within a reasonable range is conducive to miniaturization of the optical lens. Preferably, TTL / F≤5.

[0138] In this embodiment, the ratio of the optical lens focal length to the entrance pupil diameter EPND satisfies: F / EPND≤2.2. Controlling the ratio of the optical lens focal length to the entrance pupil diameter within a reasonable range is beneficial to increasing the light flux of the optical lens and improving the imaging quality of the optical lens in a dark environment. Preferably, F / EPND≤1.8.

[0139] In this embodiment, the total length TTL of the optical lens and the maximum aperture DMAX of all lenses in the optical lens satisfy: TTL / DMAX≤5. Controlling the ratio of the total length of the optical lens to the maximum aperture of all lenses in the optical lens within a reasonable range is conducive to a more compact overall structure of the optical lens, a smaller front aperture, and miniaturization of the optical lens. Preferably, TTL / DMAX≤3.5.

[0140] In this embodiment, the total length TTL of the optical lens, the maximum field of view FOV of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens satisfy: TTL / H / FOV≤0.06. Under the same field of view and image height, it is beneficial to reduce the size of the optical lens and achieve miniaturization. Preferably, TTL / H / FOV≤0.04.

[0141] In this embodiment, the focal length value F of the optical lens, the maximum field of view FOV of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens satisfy: (FOV×F) / H≥80. This setting enables the optical lens to achieve the effects of telephoto and large field of view at the same time, and achieve a large angular resolution in the central field of view. Preferably, (FOV×F) / H≥95.

[0142] In this embodiment, the maximum aperture DMAX of all lenses in the optical lens, the maximum field of view FOV of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens satisfy: DMAX / H / FOV≤0.2. Controlling DMAX / H / FOV within a reasonable range is conducive to reducing the front diameter of the optical lens and achieving miniaturization. Preferably, DMAX / H / FOV≤0.15.

[0143] In this embodiment, the arc θ of the maximum field angle of the optical lens, the focal length F of the optical lens, and the image height H corresponding to the maximum field angle of the optical lens satisfy: (H / 2) / (F*tan(θ / 2))≥0.1. When the ideal image height is the same, the actual image height at the edge is larger, which is conducive to achieving a large angle resolution at the center. Preferably, (H / 2) / (F*tan(θ / 2))≥0.2.

[0144] In this embodiment, the focal length value F of the optical lens and the image height H corresponding to the maximum field angle of the optical lens satisfy: 0.3≤F / H≤2. Controlling the focal length value and image height of the optical lens within a certain range is conducive to improving the resolution of the optical lens. Preferably, 0.5≤F / H≤1.2.

[0145] In this embodiment, the opening angle arctan(1 / K(S1)) of the first side of the first lens at the maximum field angle satisfies: arctan(1 / K(S1))≤12. The edge opening angle of the first side of the first lens is small, which is conducive to collecting edge field light, and the first side of the first lens is aspherical. The center of the first side of the first lens is convex, and the edge opening angle is small, which makes it easy to distinguish between edge field light and center field light. In the case of a large field of view, large distortion is introduced by the edge to achieve a large central angle resolution. Preferably, arctan(1 / K(S1))≤8.

[0146] In this embodiment, the vector height SAG1 of the first side surface of the first lens at the maximum field angle and the maximum clear aperture D1 of the first side surface of the first lens corresponding to the optical lens at the maximum field angle satisfy the following condition: arctan(SAG1 / D1)≤0.6. By controlling the ratio of the vector height and the maximum clear aperture of the first side surface of the first lens within a smaller range, the first side surface of the first lens is aspherical. Under the condition of a large field angle, the center of the first side surface of the first lens is convex and the edge angle is small, which is conducive to collecting the edge field light and reducing the height of the edge field light incident on the image plane, so as to achieve a large central angle resolution. Preferably, arctan(SAG1 / D1)≤0.25.

[0147] In this embodiment, the vector height SAG2 of the second side of the first lens at the maximum field angle and the maximum aperture D2 of the second side of the first lens corresponding to the maximum field angle of the optical lens satisfy: arctan (SAG2 / D2) ≥ 0.05. The second side of the first lens has a large opening angle, which is conducive to the rapid deflection of large-angle peripheral light entering the first lens, collecting edge light to enter the second lens, and improving the imaging quality. Preferably, arctan (SAG2 / D2) ≥ 0.12.

[0148] In this embodiment, the vector height SAG11 of the second side surface of the fifth lens at the maximum field angle and the maximum clear aperture D11 of the second side surface of the fifth lens corresponding to the maximum field angle of the optical lens satisfy: |arctan(SAG11 / D11)|≥0.08. This arrangement makes the bonding surface angle larger, which is conducive to the rapid focusing of peripheral light and improves the imaging quality of the optical lens. Preferably, |arctan(SAG11 / D11)|≥0.13.

[0149] In this embodiment, the radius of curvature R14 of the second side surface of the seventh lens satisfies the focal length F of the optical lens: R14 / F≤-0.001. The second side surface of the seventh lens is a convex surface bent toward the first side, and the light emitted through the second side surface of the seventh lens has a large deflection angle, and the edge field of view introduces a large distortion, which can achieve a large central angle resolution. Preferably, R14 / F≤-0.05.

[0150] In this embodiment, the focal length value F3 of the third lens and the focal length value F4 of the fourth lens satisfy: F3 / F4≤5. The third lens and the fourth lens have similar focal lengths, which helps to smoothly transition the light and improve the imaging quality of the optical lens. Preferably, F3 / F4≤3.

[0151] In this embodiment, the total length TTL of the optical lens and the center distance d67 of the sixth lens and the seventh lens satisfy: d67 / TTL≥0.03. The center distances of the sixth lens and the seventh lens are widened, and the light emitted through the glued component has a smooth trend, which is conducive to reducing sensitivity. Preferably, d67 / TTL≥0.045.

[0152] In this embodiment, the curvature radius R3 of the first side surface of the second lens and the curvature radius R4 of the second side surface of the second lens satisfy: R3 / R4≥0.01. The second lens is a thick meniscus lens bent toward the first side, and the shape of the second lens is conducive to reducing the diameter of the first lens and the front port of the optical system. Preferably, R3 / R4≥0.3.

[0153] In this embodiment, the focal length value F6 of the sixth lens and the focal length value F7 of the seventh lens satisfy: F7 / F6≤-0.001. The signs of the focal powers of the sixth lens and the seventh lens are opposite, and there is a large distance between the sixth lens and the seventh lens, which is conducive to correcting field curvature and improving image quality. Preferably, F7 / F6≤-0.5.

[0154] Embodiment 2

[0155] like Figures 1 to 10 As shown, the optical lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, the first lens has a negative optical focal power; the second lens has an optical focal power; the third lens has a positive optical focal power; the fourth lens has a positive optical focal power; the fifth lens has an optical focal power; the sixth lens has an optical focal power; the seventh lens has an optical focal power; the radius of curvature R14 of the second side surface of the seventh lens and the focal length value F of the optical lens satisfy: R14 / F≤-0.001. The second side surface of the seventh lens is a convex surface bent toward the first side, and the light deflection angle emitted from the second side surface of the seventh lens is large, and the edge field of view introduces a large distortion, which can achieve a large central angle resolution. Preferably, R14 / F≤-0.05.

[0156] The first lens has negative focal length, the first side of the first lens is convex, and the second side of the first lens is concave. The first lens is set to have a negative focal length to have a divergent effect on the light, and the first side of the first lens is convex to the first side, so that the light has a smaller incident angle, which is conducive to more light entering the optical system and achieving a large field of view. The second side of the first lens is set to a concave surface, which can control the trend of the edge of the first lens at a large angle, so that the rear optical system has a larger light receiving surface. The first lens is an aspherical lens, and the curvature radius values ​​of the first side and the second side of the first lens are relatively close, so that the first lens is approximately a concentric meniscus lens, so that the focal length of the first lens is longer, which is conducive to achieving the telephoto requirements of the optical lens; at the same time, the side of the first lens is convex in the center, and the edge angle is small, which is conducive to collecting the edge field of view light, compressing the height of the edge field of view light incident on the image plane, and helping to achieve the center large angle resolution and resolve more detailed information. In addition, the first lens preferably uses a high refractive index material, which is conducive to reducing the front port diameter and improving the imaging quality.

[0157] Optionally, the second lens has positive focal length, the first side of the second lens is concave, and the second side of the second lens is convex. The second lens has positive focal length, and when used with the first lens, the second lens has less improvement on the light trend passing through the first lens. The first side of the second lens is concave, so that the light emitted by the second lens can still maintain an upward trend. Under the same field of view, the rear optical system has a larger light receiving surface, which is beneficial to the expansion of the image plane and the aperture, and can achieve a larger amount of light entering, increase the brightness of the image plane, and improve the imaging quality in a dark environment. The meniscus shape concave to the first side collects the light entering through the first lens. Because the curvature of the first side of the second lens is similar to that of the second side, it is beneficial to the smooth transition of the light on the second lens, reduce sensitivity and field curvature, and improve imaging quality. At the same time, the first side of the second lens, which is concave, cooperates with the second side of the first lens, which is also concave, to achieve a reduction in the diameter of the front port of the optical lens, which is beneficial to reduce the volume of the optical lens, so as to reduce costs and achieve miniaturization.

[0158] Optionally, the second lens has a negative focal length, the first side of the second lens is a concave surface, and the second side of the second lens is a convex surface. The second lens has a negative focal length and has a divergent effect on the light. The first side of the second lens is a concave surface. After the light passes through the first side of the second lens, it still maintains an upward trend. After the light enters the rear optical system, it can reach a higher point on the image plane to expand the imaging surface. The first side of the second lens is a concave surface, which is matched with the second side of the convex surface, so that the light can transition smoothly, increase the number of incident light rays in the rear optical system, achieve a larger amount of light input, and increase the brightness of the image plane. At the same time, because the curvature of the first side of the second lens is similar to that of the second side, it is conducive to the smooth transition of light on the second lens and reduce sensitivity. The first side of the second lens, which is also a concave surface, cooperates with the second side of the first lens, which is also a concave surface, to achieve a reduction in the diameter of the front port of the optical lens, which is conducive to reducing the volume of the optical lens, so as to reduce costs and achieve miniaturization.

[0159] The third lens has positive focal length, the first side surface of the third lens is convex, and the second side surface of the third lens is convex. The third lens with positive focal length has a convergence effect on light, which allows the divergent light to smoothly enter the rear optical system on the one hand, and on the other hand, it reduces the light incident on the rear optical system, reduces the rear port diameter, and is conducive to the miniaturization of the optical lens. At the same time, the second side surface of the third lens is convex to converge the light, which is conducive to the reduction of the rear port diameter of the optical lens and realize miniaturization.

[0160] Optionally, the fourth lens has positive focal length, the first side surface of the fourth lens is concave, and the second side surface of the fourth lens is convex. The fourth lens with positive focal length further converges the light, allowing the light to smoothly transition to the rear optical system, improving the imaging quality of the optical lens, and further suppressing the light trend, which is conducive to the miniaturization of the rear optical system and the further reduction of the front port diameter.

[0161] Optionally, the fourth lens has positive focal length, the first side surface of the fourth lens is a convex surface, and the second side surface of the fourth lens is a convex surface. The fourth lens with positive focal length further converges the light, so that the light smoothly transitions to the rear optical system, improving the imaging quality of the optical lens, and at the same time, the convergence of the light by the fourth lens can realize a larger aperture, a larger amount of light entering, and an increased brightness of the image plane.

[0162] Optionally, the fifth lens has positive focal power, the first side surface of the fifth lens is convex, and the second side surface of the fifth lens is convex. The fifth lens with positive focal power converges light, and is used in conjunction with the third lens and the fourth lens with positive focal power to further reduce the incident height of light, reduce the aperture of the rear optical system, and achieve miniaturization.

[0163] Optionally, the fifth lens has negative optical power, the first side surface of the fifth lens is convex, and the second side surface of the fifth lens is concave. There are two lenses with positive optical power arranged continuously in front of the fifth lens, both of which have a convergence effect on light, and while continuously changing the trend of light, they also bring about large aberrations. The fifth lens with negative optical power has a divergent effect on light. By controlling the focal length of the fifth lens, various aberrations brought by the positive lens in front can be effectively corrected, thereby improving the imaging quality of the optical lens.

[0164] Optionally, the fifth lens has negative optical power, the first side surface of the fifth lens is concave, and the second side surface of the fifth lens is concave. There are two lenses with positive optical power arranged continuously in front of the fifth lens, both of which have a convergence effect on light, and while continuously changing the trend of light, they also bring about large aberrations. The fifth lens with negative optical power has a divergent effect on light. By controlling the shape and focal length of the fifth lens, various aberrations brought by the positive lens in front can be effectively corrected, the imaging quality of the optical lens can be improved, and the effective aperture of the rear optical system can be adjusted at the same time.

[0165] Optionally, the sixth lens has positive power, the first side surface of the sixth lens is convex, and the second side surface of the sixth lens is convex. The sixth lens with positive power has a convergence effect on light, and cooperates with the fifth lens with negative power to further reduce aberrations, while allowing the light to converge effectively and smoothly at the end, so that the light reaches the imaging surface smoothly, reducing the overall weight and cost. The second side surface of the sixth lens is convex, and cooperates with the seventh lens with a convex first side surface, so that the light can transition smoothly and reduce tolerance sensitivity. The fifth lens and the sixth lens can be glued together to eliminate chromatic aberration, and the chromatic aberration of the system can be balanced by residual high-order chromatic aberration. In addition, the glued lens is composed of a positive lens and a negative lens, wherein the positive lens has a lower refractive index, and the negative lens has a higher refractive index than the positive lens. The combination of high and low refractive indices is beneficial to the rapid transition of the front light, increases the aperture of the aperture, increases the amount of light passing, and is beneficial to improving the imaging quality in dark environments. In addition, the use of glued lenses in optical lenses is beneficial to the overall compact structure, which is beneficial to meeting the requirements of miniaturization, and at the same time reduces the tolerance sensitivity problems such as tilt and eccentricity generated by the lens unit during the assembly process.

[0166] Optionally, the sixth lens has negative focal length, the first side of the sixth lens is concave, and the second side of the sixth lens is concave. The sixth lens with negative focal length has a divergent effect on light, and can reduce aberrations when combined with the fifth lens with positive focal length. At the same time, the second side of the sixth lens is concave, and when combined with the convex surface of the seventh lens, the field curvature can be further reduced, so that the light reaches the imaging surface smoothly, and the overall weight and cost are reduced. The fifth lens and the sixth lens can be glued together to eliminate chromatic aberration, and the chromatic aberration of the system can be balanced by residual high-order chromatic aberration. In addition, the glued lens is composed of a positive lens and a negative lens, wherein the positive lens has a lower refractive index, and the negative lens has a higher refractive index relative to the positive lens. The combination of high and low refractive indices is conducive to the rapid transition of the front light, increases the aperture, increases the amount of light passing, and is conducive to improving the imaging quality in a dark environment. In addition, the use of glued lenses in optical lenses is conducive to a compact overall structure, is conducive to meeting the requirements of miniaturization, and reduces the tolerance sensitivity problems such as tilt and eccentricity generated by the lens unit during the assembly process.

[0167] Optionally, the seventh lens has positive power, the first side surface of the seventh lens is convex, and the second side surface of the seventh lens is convex. The seventh lens with positive power cooperates with the sixth lens with negative power to correct field curvature and astigmatism, and can make the light passing through the cemented lens smoothly transition to the imaging surface. At the same time, the seventh lens is an aspherical lens, which can further correct astigmatism and field curvature and improve the resolution of the optical lens.

[0168] Optionally, the seventh lens has negative optical power, the first side surface of the seventh lens is concave, and the second side surface of the seventh lens is convex. The seventh lens with negative optical power cooperates with the sixth lens with positive optical power to correct field curvature and astigmatism, and can make the light passing through the cemented lens smoothly transition to the imaging surface. At the same time, the seventh lens is an aspherical lens, which can further correct astigmatism and field curvature and improve the resolution ability of the optical lens.

[0169] In this embodiment, the first lens, the second lens, the third lens and the seventh lens are all aspherical lenses. Such an arrangement is conducive to achieving a large field angle, a large image height, a large central angular resolution, correcting field curvature and astigmatism, and improving resolution.

[0170] In this embodiment, the fifth lens and the sixth lens are cemented lenses. The cemented lens is conducive to eliminating the chromatic aberration of the optical lens, while making the overall structure of the optical lens more compact, meeting the requirements of miniaturization, and reducing the tolerance sensitivity problems such as tilt and eccentricity of the lens unit caused by the assembly process. The cemented lens is composed of a positive lens and a negative lens, wherein the positive lens has a lower refractive index and the negative lens has a higher refractive index relative to the positive lens. The combination of high and low refractive indices is conducive to the rapid transition of the front light, reducing aberrations, increasing the aperture, increasing the amount of light passing, and improving the imaging quality in dark environments.

[0171] In this embodiment, the optical lens further includes a stop, which is disposed between the second lens and the third lens. Placing the stop between the second lens and the third lens reasonably distributes the height of the front and rear light groups, shortens the total length of the optical lens, and reduces the aperture of the front and rear lens groups.

[0172] Optionally, the first side surface of the seventh lens has an inflection point, and the second side surface of the seventh lens has an inflection point. This arrangement is conducive to balancing the aberrations of the central field of view and the edge field of view, and improving the resolution.

[0173] Optionally, the first side surface of the first lens has an inflection point. The setting of the inflection point is conducive to balancing the aberration of the central field of view and the edge field of view, and improving the resolution of the optical lens.

[0174] Optionally, the first side surface of the first lens has an inflection point, the first side surface of the seventh lens has an inflection point, and the second side surface of the seventh lens has an inflection point. The setting of the inflection point is conducive to balancing the aberration of the central field of view and the edge field of view, and improving the resolution of the optical lens.

[0175] Optionally, the first side surface of the first lens has an inflection point. The setting of the inflection point is conducive to balancing the aberration of the central field of view and the edge field of view, and improving the resolution of the optical lens.

[0176] In this embodiment, the total length TTL of the optical lens and the focal length F of the optical lens satisfy: TTL / F≤6. Controlling the ratio of the total length of the optical lens to the focal length of the optical lens within a reasonable range is conducive to miniaturization of the optical lens. Preferably, TTL / F≤5.

[0177] In this embodiment, the ratio of the optical lens focal length to the entrance pupil diameter EPND satisfies: F / EPND≤2.2. Controlling the ratio of the optical lens focal length to the entrance pupil diameter within a reasonable range is beneficial to increasing the light flux of the optical lens and improving the imaging quality of the optical lens in a dark environment. Preferably, F / EPND≤1.8.

[0178] In this embodiment, the total length TTL of the optical lens and the maximum aperture DMAX of all lenses in the optical lens satisfy: TTL / DMAX≤5. Controlling the ratio of the total length of the optical lens to the maximum aperture of all lenses in the optical lens within a reasonable range is conducive to a more compact overall structure of the optical lens, a smaller front aperture, and miniaturization of the optical lens. Preferably, TTL / DMAX≤3.5.

[0179] In this embodiment, the total length TTL of the optical lens, the maximum field of view FOV of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens satisfy: TTL / H / FOV≤0.06. Under the same field of view and image height, it is beneficial to reduce the size of the optical lens and achieve miniaturization. Preferably, TTL / H / FOV≤0.04.

[0180] In this embodiment, the focal length value F of the optical lens, the maximum field of view FOV of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens satisfy: (FOV×F) / H≥80. This setting enables the optical lens to achieve the effects of telephoto and large field of view at the same time, and achieve a large angular resolution in the central field of view. Preferably, (FOV×F) / H≥95.

[0181] In this embodiment, the maximum aperture DMAX of all lenses in the optical lens, the maximum field of view FOV of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens satisfy: DMAX / H / FOV≤0.2. Controlling DMAX / H / FOV within a reasonable range is conducive to reducing the front diameter of the optical lens and achieving miniaturization. Preferably, DMAX / H / FOV≤0.15.

[0182] In this embodiment, the arc θ of the maximum field angle of the optical lens, the focal length F of the optical lens, and the image height H corresponding to the maximum field angle of the optical lens satisfy: (H / 2) / (F*tan(θ / 2))≥0.1. When the ideal image height is the same, the actual image height at the edge is larger, which is conducive to achieving a large angle resolution at the center. Preferably, (H / 2) / (F*tan(θ / 2))≥0.2.

[0183] In this embodiment, the focal length value F of the optical lens and the image height H corresponding to the maximum field angle of the optical lens satisfy: 0.3≤F / H≤2. Controlling the focal length value and image height of the optical lens within a certain range is conducive to improving the resolution of the optical lens. Preferably, 0.5≤F / H≤1.2.

[0184] In this embodiment, the opening angle arctan(1 / K(S1)) of the first side of the first lens at the maximum field angle satisfies: arctan(1 / K(S1))≤12. The edge opening angle of the first side of the first lens is small, which is conducive to collecting edge field light, and the first side of the first lens is aspherical. The center of the first side of the first lens is convex, and the edge opening angle is small, which makes it easy to distinguish between edge field light and center field light. In the case of a large field of view, large distortion is introduced by the edge to achieve a large central angle resolution. Preferably, arctan(1 / K(S1))≤8.

[0185] In this embodiment, the vector height SAG1 of the first side surface of the first lens at the maximum field angle and the maximum clear aperture D1 of the first side surface of the first lens corresponding to the optical lens at the maximum field angle satisfy the following condition: arctan(SAG1 / D1)≤0.6. By controlling the ratio of the vector height and the maximum clear aperture of the first side surface of the first lens within a smaller range, the first side surface of the first lens is aspherical. Under the condition of a large field angle, the center of the first side surface of the first lens is convex and the edge angle is small, which is conducive to collecting the edge field light and reducing the height of the edge field light incident on the image plane, so as to achieve a large central angle resolution. Preferably, arctan(SAG1 / D1)≤0.25.

[0186] In this embodiment, the vector height SAG2 of the second side of the first lens at the maximum field angle and the maximum aperture D2 of the second side of the first lens corresponding to the maximum field angle of the optical lens satisfy: arctan (SAG2 / D2) ≥ 0.05. The second side of the first lens has a large opening angle, which is conducive to the rapid deflection of large-angle peripheral light entering the first lens, collecting edge light to enter the second lens, and improving the imaging quality. Preferably, arctan (SAG2 / D2) ≥ 0.12.

[0187] In this embodiment, the vector height SAG11 of the second side surface of the fifth lens at the maximum field angle and the maximum clear aperture D11 of the second side surface of the fifth lens corresponding to the maximum field angle of the optical lens satisfy: |arctan(SAG11 / D11)|≥0.08. This arrangement makes the bonding surface angle larger, which is conducive to the rapid focusing of peripheral light and improves the imaging quality of the optical lens. Preferably, |arctan(SAG11 / D11)|≥0.13.

[0188] In this embodiment, the focal length value F6 of the sixth lens and the focal length value F7 of the seventh lens satisfy: F7 / F6≤-0.001. The signs of the focal powers of the sixth lens and the seventh lens are opposite, and there is a large distance between the sixth lens and the seventh lens, which is conducive to correcting field curvature and improving image quality. Preferably, F7 / F6≤-0.5.

[0189] In this embodiment, the focal length value F3 of the third lens and the focal length value F4 of the fourth lens satisfy: F3 / F4≤5. The third lens and the fourth lens have similar focal lengths, which helps to smoothly transition the light and improve the imaging quality of the optical lens. Preferably, F3 / F4≤3.

[0190] In this embodiment, the total length TTL of the optical lens and the center distance d67 of the sixth lens and the seventh lens satisfy: d67 / TTL≥0.03. The center distances of the sixth lens and the seventh lens are widened, and the light emitted through the glued component has a smooth trend, which is conducive to reducing sensitivity. Preferably, d67 / TTL≥0.045.

[0191] In this embodiment, the curvature radius R3 of the first side surface of the second lens and the curvature radius R4 of the second side surface of the second lens satisfy: R3 / R4≥0.01. The second lens is a thick meniscus lens bent toward the first side, and the shape of the second lens is conducive to the smooth transition of light and improves the imaging quality. Preferably, R3 / R4≥0.3.

[0192] Optionally, the optical lens may further include a filter for correcting color deviation and a protective glass for protecting a photosensitive element located on the imaging surface.

[0193] In the above optical lens, the maximum field of view FOV of the optical lens is associated with H, and the field of view corresponding to the image height is used. The total optical length TTL of the optical lens refers to the distance from the first side surface of the first lens to the imaging surface of the optical lens on the optical axis.

[0194] The optical lens in the present application may use multiple lenses, such as the seven lenses mentioned above. In the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface. The characteristic of an aspherical lens is that the curvature changes continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens with a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better curvature radius characteristic, and has the advantages of improving distortion aberration and improving astigmatism aberration. After adopting an aspherical lens, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality. Specifically, when focusing on the imaging quality of the optical lens, the first lens to the seventh lens can all use aspherical lenses.

[0195] In an exemplary embodiment, the first lens to the seventh lens may all be glass lenses. An optical lens made of glass can suppress the deviation of the back focus of the optical lens with temperature changes to improve system stability. At the same time, the use of glass material can avoid lens imaging blur caused by high and low temperature changes in the use environment, which affects the normal use of the lens. For example, an optical lens with an all-glass design has a wide temperature range and can maintain stable optical performance in the range of -40°C to 105°C.

[0196] Specifically, when focusing on resolution quality and reliability, the first to seventh lenses can all be glass aspheric lenses. Of course, in applications where temperature stability requirements are low, the first to seventh lenses in the optical lens can also be made of plastic. Using plastic to make optical lenses can effectively reduce production costs. Of course, the first to seventh lenses in the optical lens can also be made of a combination of plastic and glass.

[0197] The present application also provides an electronic device, comprising the above-mentioned optical lens and an imaging element for converting an optical image formed by the optical lens into an electrical signal. The imaging element may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The electronic device may be an independent imaging device such as a digital camera, or an imaging module integrated in a mobile electronic device such as a mobile phone. The electronic device is equipped with the above-described optical lens.

[0198] However, those skilled in the art should understand that, without departing from the technical solution claimed in the present application, the number of lenses constituting the optical lens can be changed to obtain the various results and advantages described in this specification. For example, although seven lenses are described as an example in the embodiment, the optical lens is not limited to including seven lenses. If necessary, the optical lens may also include other numbers of lenses.

[0199] The following further describes examples of specific surface shapes and parameters of the optical lens applicable to the above-mentioned embodiments with reference to the accompanying drawings.

[0200] Example 1

[0201] like Figure 1 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter and an imaging surface IMA.

[0202] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has positive power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is convex. The third lens L3 has positive power, the first side surface S6 of the third lens is convex, and the second side surface S7 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S8 of the fourth lens is convex, and the second side surface S9 of the fourth lens is convex. The fifth lens L5 has negative power, the first side surface S10 of the fifth lens is convex, and the second side surface S11 of the fifth lens is concave. The sixth lens L6 has positive power, the first side surface S11 of the sixth lens is convex, and the second side surface S12 of the sixth lens is convex. The seventh lens L7 has negative power, the first side surface S13 of the seventh lens is concave, and the second side surface S14 of the seventh lens is convex. The filter has a first side surface S15 of the filter and a second side surface S16 of the filter. Light from the object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface IMA.

[0203] In this example, the focal length F of the optical lens is 10.504 mm, the total length TTL of the optical lens is 44.1392 mm, and the maximum field of view FOV of the optical lens is 130°.

[0204] In this example, the fifth lens and the sixth lens are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S11, but for the first side surface and the second side surface, when the radius of curvature is the same, the surface shapes of the two are opposite, so the second side surface S11 of the fifth lens is concave, and the first side surface S11 of the sixth lens is convex.

[0205] It should be noted that, in the curvature radius Ri of each lens, i refers to the surface number of the lens surface.

[0206] Table 1 shows the basic structural parameters of the optical lens of Example 1, wherein the units of the radius of curvature and the thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0207] Surf Radius Thickness Nd Vd 1 6.2327 3.1011 1.69 53.20 2 3.7126 3.9448 3 -11.1640 7.8449 1.81 41.00 4 -11.9573 4.7651 STO Infinity 0.2131 6 33.6690 3.9946 1.59 61.25 7 -21.3871 0.1552 8 19.4501 4.2471 1.50 81.61 9 -15.7309 0.2724 10 71.9351 0.9501 1.90 31.32 11 7.1812 6.4974 1.59 68.70 12 -26.8022 3.0662 13 -9.5109 2.8465 1.81 40.99 14 -11.9549 1.2963 15 Infinity 0.5179 1.52 64.20 16 Infinity 0.4264 IMA / /

[0208] Table 1

[0209] In this example, the first lens, the second lens, the third lens and the seventh lens are aspherical lenses. The surface shape of each aspherical lens can be defined by but not limited to the following aspherical formula:

[0210]

[0211] Wherein, x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c=1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient; and A is the high-order coefficient. Table 2 below shows the cone coefficient k and the high-order coefficients A (4th-order coefficient), B (6th-order coefficient), C (8th-order coefficient), D (10th-order coefficient), E (12th-order coefficient), F (14th-order coefficient), G (16th-order coefficient), H (18th-order coefficient), and I (20th-order coefficient) that can be used for the surface of the aspheric lens in this example.

[0212] Surf K A B C D E F G H I 1 -3.34E+00 5.76E-04 -6.35E-05 8.65E-07 1.95E-08 -6.41E-10 2.61E-12 1.18E-13 -1.83E-15 8.34E-18 2 -1.96E+00 5.48E-04 -1.61E-04 2.98E-06 7.61E-07 -8.75E-08 5.09E-09 -1.75E-10 3.37E-12 -2.78E-14 3 1.79E+00 6.83E-05 4.32E-06 -1.25E-06 1.89E-07 -1.42E-08 6.59E-10 -1.81E-11 2.61E-13 -1.42E-15 4 -1.03E+00 7.01E-05 -2.36E-06 3.31E-07 -3.95E-08 3.16E-09 -1.63E-10 5.07E-12 -8.69E-14 6.25E-16 6 -1.82E+01 2.72E-04 -1.13E-05 2.11E-06 -2.88E-07 2.47E-08 -1.33E-09 4.39E-11 -8.11E-13 6.41E-15 7 -2.60E+01 -1.93E-04 3.00E-05 -4.32E-06 5.41E-07 -4.40E-08 2.22E-09 -6.71E-11 1.11E-12 -7.77E-15 13 -4.73E-01 1.09E-03 6.45E-05 -1.03E-05 7.47E-07 -3.45E-08 1.05E-09 -2.02E-11 2.23E-13 -1.08E-15 14 -3.91E-01 -2.94E-03 4.19E-04 -3.22E-05 1.68E-06 -6.11E-08 1.51E-09 -2.42E-11 2.25E-13 -9.18E-16

[0213] Table 2

[0214] Example 2

[0215] like Figure 2 As shown, the optical lens includes a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter and an imaging surface IMA in order from the first side to the second side. For the sake of brevity, descriptions similar to those in Example 1 are omitted in this example and the following examples.

[0216] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has positive power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is convex. The third lens L3 has positive power, the first side surface S6 of the third lens is convex, and the second side surface S7 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S8 of the fourth lens is convex, and the second side surface S9 of the fourth lens is convex. The fifth lens L5 has negative power, the first side surface S10 of the fifth lens is convex, and the second side surface S11 of the fifth lens is concave. The sixth lens L6 has positive power, the first side surface S11 of the sixth lens is convex, and the second side surface S12 of the sixth lens is convex. The seventh lens L7 has negative power, the first side surface S13 of the seventh lens is concave, and the second side surface S14 of the seventh lens is convex. The filter has a first side surface S15 of the filter and a second side surface S16 of the filter. Light from the object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface IMA.

[0217] In this example, the focal length F of the optical lens is 9.9147 mm, the total length TTL of the optical lens is 40.8646 mm, and the maximum field of view FOV of the optical lens is 130°.

[0218] The first side surface S13 of the seventh lens and the second side surface S14 of the seventh lens both have an inflection point.

[0219] Table 3 shows the basic structural parameters of the optical lens of Example 2, where the units of the radius of curvature and the thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0220] Surf Radius Thickness Nd Vd 1 6.0524 2.7911 1.69 53.13 2 3.5999 4.2925 3 -9.7361 5.9678 1.81 40.99 4 -11.0996 3.3335 STO Infinity 0.1683 6 21.3323 4.9539 1.59 61.15 7 -23.5872 0.1488 8 23.4479 3.9210 1.50 81.61 9 -12.6949 0.1582 10 135.8638 1.8518 1.90 31.31 11 7.4004 5.5865 1.59 68.70 12 -19.1023 3.2780 13 -9.7038 2.2559 1.81 40.99 14 -15.5900 1.2222 15 Infinity 0.5000 1.52 64.20 16 Infinity 0.4350 IMA / /

[0221] Table 3

[0222] In this example, the first lens, the second lens, the third lens and the seventh lens are aspherical lenses. Table 4 below shows the conic coefficient k and the coefficients of the higher-order terms that can be used for the aspherical lens surfaces in this example.

[0223] Surf K A B C D E F G H I 1 -3.24E+00 5.38E-04 -6.08E-05 8.22E-07 1.88E-08 -6.19E-10 2.53E-12 1.14E-13 -1.77E-15 8.00E-18 2 -1.80E+00 4.90E-04 -1.53E-04 2.50E-06 7.41E-07 -8.44E-08 4.91E-09 -1.69E-10 3.25E-12 -2.68E-14 3 7.15E-01 3.03E-05 -3.00E-07 -1.09E-06 1.76E-07 -1.38E-08 6.43E-10 -1.75E-11 2.34E-13 -8.92E-16 4 -1.25E+00 5.13E-05 -3.20E-06 3.66E-07 -3.89E-08 3.03E-09 -1.57E-10 4.92E-12 -8.46E-14 6.13E-16 6 4.29E-01 1.95E-04 -9.73E-06 2.01E-06 -2.78E-07 2.38E-08 -1.28E-09 4.24E-11 -7.84E-13 6.19E-15 7 -2.71E+01 -1.47E-05 2.67E-05 -4.12E-06 5.22E-07 -4.24E-08 2.14E-09 -6.48E-11 1.07E-12 -7.49E-15 13 -1.13E+01 1.74E-04 8.62E-05 -1.03E-05 7.24E-07 -3.33E-08 1.01E-09 -1.95E-11 2.15E-13 -1.05E-15 14 -8.18E+01 -3.45E-03 4.20E-04 -3.14E-05 1.62E-06 -5.89E-08 1.46E-09 -2.34E-11 2.17E-13 -8.71E-16

[0224] Table 4

[0225] Example 3

[0226] like Figure 3 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter and an imaging surface IMA.

[0227] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has positive power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is convex. The third lens L3 has positive power, the first side surface S6 of the third lens is convex, and the second side surface S7 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S8 of the fourth lens is convex, and the second side surface S9 of the fourth lens is convex. The fifth lens L5 has negative power, the first side surface S10 of the fifth lens is concave, and the second side surface S11 of the fifth lens is concave. The sixth lens L6 has positive power, the first side surface S11 of the sixth lens is convex, and the second side surface S12 of the sixth lens is convex. The seventh lens L7 has negative power, the first side surface S13 of the seventh lens is concave, and the second side surface S14 of the seventh lens is convex. The filter has a first side surface S15 of the filter and a second side surface S16 of the filter. Light from the object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface IMA.

[0228] In this example, the focal length F of the optical lens is 10.3001 mm, the total length TTL of the optical lens is 38.9148 mm, and the maximum field of view FOV of the optical lens is 130°.

[0229] The first side surface S1 of the first lens has an inflection point.

[0230] Table 5 shows the basic structural parameters of the optical lens of Example 3, where the units of the radius of curvature and the thickness / distance are all in millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0231]

[0232]

[0233] Table 5

[0234] In this example, the first lens, the second lens, the third lens and the seventh lens are aspherical lenses. Table 6 below shows the conic coefficient k and the coefficients of the higher-order terms that can be used for the aspherical lens surfaces in this example.

[0235] Surf K A B C D E F G H I 1 -3.69E+00 -3.36E-04 -1.68E-05 -6.94E-08 2.70E-08 -6.46E-10 2.52E-12 1.14E-13 -1.77E-15 8.04E-18 2 -1.84E+00 -4.13E-04 -3.61E-05 -1.40E-06 8.33E-07 -8.45E-08 4.91E-09 -1.69E-10 3.26E-12 -2.67E-14 3 1.28E+01 -5.63E-05 1.20E-05 -6.10E-07 1.75E-07 -1.37E-08 6.37E-10 -1.74E-11 2.53E-13 -1.47E-15 4 -1.88E+00 1.90E-04 6.54E-06 3.16E-07 -4.76E-08 3.05E-09 -1.57E-10 4.90E-12 -8.39E-14 6.04E-16 6 -9.90E+01 3.39E-04 5.90E-06 1.70E-06 -2.79E-07 2.38E-08 -1.28E-09 4.24E-11 -7.83E-13 6.18E-15 7 -2.36E+00 -1.42E-04 2.24E-05 -3.92E-06 5.22E-07 -4.25E-08 2.14E-09 -6.48E-11 1.07E-12 -7.41E-15 13 -4.50E+00 5.40E-04 6.22E-05 -9.81E-06 7.18E-07 -3.33E-08 1.01E-09 -1.95E-11 2.15E-13 -1.04E-15 14 -6.56E+01 -3.74E-03 4.20E-04 -3.12E-05 1.62E-06 -5.90E-08 1.46E-09 -2.34E-11 2.17E-13 -8.86E-16

[0236] Table 6

[0237] Example 4

[0238] like Figure 4 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter and an imaging surface IMA.

[0239] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has positive power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is convex. The third lens L3 has positive power, the first side surface S6 of the third lens is convex, and the second side surface S7 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S8 of the fourth lens is convex, and the second side surface S9 of the fourth lens is convex. The fifth lens L5 has negative power, the first side surface S10 of the fifth lens is concave, and the second side surface S11 of the fifth lens is concave. The sixth lens L6 has positive power, the first side surface S11 of the sixth lens is convex, and the second side surface S12 of the sixth lens is convex. The seventh lens L7 has negative power, the first side surface S13 of the seventh lens is concave, and the second side surface S14 of the seventh lens is convex. The filter has a first side surface S15 of the filter and a second side surface S16 of the filter. Light from the object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface IMA.

[0240] In this example, the focal length F of the optical lens is 10.2003 mm, the total length TTL of the optical lens is 42.6532 mm, and the maximum field of view FOV of the optical lens is 130°.

[0241] Table 7 shows the basic structural parameters of the optical lens of Example 4, where the units of the radius of curvature and the thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0242] Surf Radius Thickness Nd Vd 1 6.1255 2.9944 1.69 53.15 2 3.5466 3.5302 3 -11.8250 7.1638 1.81 41.00 4 -13.8915 3.3922 STO Infinity 0.1830 6 21.8838 4.8582 1.59 61.25 7 -11.6921 0.1588 8 71.7256 4.3464 1.50 81.59 9 -11.5644 0.1547 10 -54.7355 3.4574 1.90 31.42 11 7.8888 4.7550 1.59 68.53 12 -15.4850 2.6522 13 -12.1930 2.9471 1.81 41.00 14 -25.3987 1.1249 15 Infinity 0.5000 1.52 64.21 16 Infinity 0.4350 IMA / /

[0243] Table 7

[0244] In this example, the first lens, the second lens, the third lens and the seventh lens are aspherical lenses. Table 8 below shows the conic coefficient k and the coefficients of the higher-order terms that can be used for the aspherical lens surfaces in this example.

[0245] Surf K A B C D E F G H I 1 -3.44E+00 5.88E-04 -6.47E-05 8.95E-07 1.86E-08 -6.19E-10 2.51E-12 1.14E-13 -1.77E-15 8.13E-18 2 -1.60E+00 -2.28E-04 -1.39E-04 2.46E-06 7.42E-07 -8.45E-08 4.91E-09 -1.69E-10 3.26E-12 -2.68E-14 3 1.65E+00 -6.75E-05 6.77E-07 -1.13E-06 1.81E-07 -1.37E-08 6.36E-10 -1.75E-11 2.50E-13 -1.32E-15 4 7.04E-02 4.88E-05 -5.02E-07 3.49E-07 -3.85E-08 3.04E-09 -1.58E-10 4.89E-12 -8.37E-14 6.13E-16 6 -1.66E+01 4.48E-05 -8.26E-06 1.95E-06 -2.79E-07 2.39E-08 -1.28E-09 4.25E-11 -7.83E-13 6.03E-15 7 -9.47E+00 -5.43E-04 3.32E-05 -4.24E-06 5.24E-07 -4.25E-08 2.14E-09 -6.48E-11 1.07E-12 -7.41E-15 13 -1.23E+01 2.01E-04 7.52E-05 -1.01E-05 7.22E-07 -3.33E-08 1.01E-09 -1.95E-11 2.15E-13 -1.04E-15 14 -1.38E+02 -3.22E-03 3.97E-04 -3.09E-05 1.62E-06 -5.90E-08 1.46E-09 -2.34E-11 2.17E-13 -8.86E-16

[0246] Table 8

[0247] Example 5

[0248] like Figure 5 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter and an imaging surface IMA.

[0249] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has positive power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is convex. The third lens L3 has positive power, the first side surface S6 of the third lens is convex, and the second side surface S7 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S8 of the fourth lens is concave, and the second side surface S9 of the fourth lens is convex. The fifth lens L5 has negative power, the first side surface S10 of the fifth lens is concave, and the second side surface S11 of the fifth lens is concave. The sixth lens L6 has positive power, the first side surface S11 of the sixth lens is convex, and the second side surface S12 of the sixth lens is convex. The seventh lens L7 has negative power, the first side surface S13 of the seventh lens is concave, and the second side surface S14 of the seventh lens is convex. The filter has a first side surface S15 of the filter and a second side surface S16 of the filter. Light from the object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface IMA.

[0250] In this example, the focal length F of the optical lens is 10.1935 mm, the total length TTL of the optical lens is 37.8091 mm, and the maximum field of view FOV of the optical lens is 130°.

[0251] The first side surface S1 of the first lens, the first side surface S13 of the seventh lens, and the second side surface S14 of the seventh lens all have an inflection point.

[0252] Table 9 shows the basic structural parameters of the optical lens of Example 5, where the units of the radius of curvature and the thickness / distance are all in millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0253] Surf Radius Thickness Nd Vd 1 6.4367 3.3120 1.69 53.15 2 3.5278 3.5414 3 -15.7248 7.0250 1.81 41.00 4 -12.3607 0.7622 STO Infinity 0.1000 6 29.8390 4.4229 1.59 61.25 7 -9.5812 0.1000 8 -56.0885 3.0478 1.50 81.59 9 -9.3485 0.1000 10 -62.5122 1.7478 1.90 31.42 11 8.2107 7.0000 1.59 68.53 12 -11.0107 2.0642 13 -7.5184 2.2127 1.81 41.00 14 -16.5920 1.4650 15 Infinity 0.5000 1.52 64.21 16 Infinity 0.4080 IMA / /

[0254] Table 9

[0255] In this example, the first lens, the second lens, the third lens and the seventh lens are aspherical lenses. Table 10 below shows the conic coefficient k and the coefficients of the higher-order terms that can be used for the aspherical lens surfaces in this example.

[0256]

[0257]

[0258] Table 10

[0259] Example 6

[0260] like Figure 6As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter and an imaging surface IMA.

[0261] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has positive power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is convex. The third lens L3 has positive power, the first side surface S6 of the third lens is convex, and the second side surface S7 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S8 of the fourth lens is concave, and the second side surface S9 of the fourth lens is convex. The fifth lens L5 has negative power, the first side surface S10 of the fifth lens is concave, and the second side surface S11 of the fifth lens is concave. The sixth lens L6 has positive power, the first side surface S11 of the sixth lens is convex, and the second side surface S12 of the sixth lens is convex. The seventh lens L7 has negative power, the first side surface S13 of the seventh lens is concave, and the second side surface S14 of the seventh lens is convex. The filter has a first side surface S15 of the filter and a second side surface S16 of the filter. Light from the object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface IMA.

[0262] In this example, the focal length F of the optical lens is 10.0891 mm, the total length TTL of the optical lens is 39.6364 mm, and the maximum field of view FOV of the optical lens is 130°.

[0263] Table 11 shows the basic structural parameters of the optical lens of Example 6, where the units of the radius of curvature and the thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0264] Surf Radius Thickness Nd Vd 1 6.1355 3.0241 1.69 53.13 2 3.5376 4.4097 3 -11.6814 7.4939 1.81 40.99 4 -11.1334 1.5015 STO Infinity 0.3303 6 19.6841 3.9223 1.59 61.15 7 -10.7478 0.1557 8 -42.6378 3.0737 1.50 81.55 9 -10.2659 0.1543 10 -47.2425 1.3891 1.90 31.31 11 7.6496 6.9998 1.59 68.34 12 -12.6576 2.9930 13 -6.4003 2.1329 1.81 40.99 14 -9.4999 1.1211 15 Infinity 0.5000 1.52 64.20 16 Infinity 0.4350 IMA / /

[0265] Table 11

[0266] In this example, the first lens, the second lens, the third lens and the seventh lens are aspherical lenses. Table 12 below shows the conic coefficient k and the coefficients of the higher-order terms that can be used for the aspherical lens surfaces in this example.

[0267] Surf K A B C D E F G H I 1 -3.33E+00 5.22E-04 -5.98E-05 8.06E-07 1.90E-08 -6.19E-10 2.52E-12 1.14E-13 -1.77E-15 8.03E-18 2 -1.77E+00 2.80E-04 -1.44E-04 2.56E-06 7.44E-07 -8.45E-08 4.91E-09 -1.69E-10 3.26E-12 -2.67E-14 3 1.56E+00 -1.14E-04 2.69E-06 -9.18E-07 1.73E-07 -1.37E-08 6.38E-10 -1.75E-11 2.52E-13 -1.49E-15 4 -1.84E+00 1.01E-04 -3.59E-06 4.15E-07 -3.99E-08 3.05E-09 -1.57E-10 4.90E-12 -8.39E-14 6.04E-16 6 1.76E+00 1.44E-04 -1.30E-05 2.21E-06 -2.82E-07 2.38E-08 -1.28E-09 4.24E-11 -7.83E-13 6.17E-15 7 -5.89E+00 -2.42E-04 2.84E-05 -4.03E-06 5.21E-07 -4.24E-08 2.14E-09 -6.48E-11 1.07E-12 -7.42E-15 13 -2.19E+00 1.76E-03 2.25E-05 -9.17E-06 7.15E-07 -3.33E-08 1.01E-09 -1.95E-11 2.15E-13 -1.04E-15 14 -1.77E+00 -1.65E-03 3.62E-04 -3.04E-05 1.62E-06 -5.90E-08 1.46E-09 -2.34E-11 2.17E-13 -8.86E-16

[0268] Table 12

[0269] Example 7

[0270] like Figure 7As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter and an imaging surface IMA.

[0271] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is convex. The third lens L3 has positive power, the first side surface S6 of the third lens is convex, and the second side surface S7 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S8 of the fourth lens is convex, and the second side surface S9 of the fourth lens is convex. The fifth lens L5 has negative power, the first side surface S10 of the fifth lens is convex, and the second side surface S11 of the fifth lens is concave. The sixth lens L6 has positive power, the first side surface S11 of the sixth lens is convex, and the second side surface S12 of the sixth lens is convex. The seventh lens L7 has negative power, the first side surface S13 of the seventh lens is concave, and the second side surface S14 of the seventh lens is convex. The filter has a first side surface S15 of the filter and a second side surface S16 of the filter. Light from the object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface IMA.

[0272] In this example, the focal length F of the optical lens is 10.2452 mm, the total length TTL of the optical lens is 39.7328 mm, and the maximum field of view FOV of the optical lens is 130°.

[0273] Table 13 shows the basic structural parameters of the optical lens of Example 7, where the units of the radius of curvature and the thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0274]

[0275]

[0276] Table 13

[0277] In this example, the first lens, the second lens, the third lens and the seventh lens are aspherical lenses. Table 14 below shows the conic coefficient k and the coefficients of the higher-order terms that can be used for the aspherical lens surfaces in this example.

[0278] Surf K A B C D E F G H I 1 -3.46E+00 3.16E-04 -5.04E-05 6.73E-07 1.96E-08 -6.19E-10 2.52E-12 1.14E-13 -1.77E-15 8.04E-18 2 -1.80E+00 -1.98E-04 -1.03E-04 1.24E-06 7.71E-07 -8.45E-08 4.91E-09 -1.69E-10 3.26E-12 -2.67E-14 3 3.42E-01 -2.98E-05 1.97E-06 -8.06E-07 1.63E-07 -1.37E-08 6.37E-10 -1.74E-11 2.53E-13 -1.47E-15 4 -7.07E+00 2.86E-04 -1.16E-07 2.87E-07 -4.31E-08 3.05E-09 -1.57E-10 4.90E-12 -8.39E-14 6.04E-16 6 8.41E+00 1.28E-04 -9.69E-06 2.14E-06 -2.83E-07 2.38E-08 -1.28E-09 4.24E-11 -7.83E-13 6.18E-15 7 -4.47E+00 -2.93E-04 2.96E-05 -3.99E-06 5.25E-07 -4.25E-08 2.14E-09 -6.48E-11 1.07E-12 -7.41E-15 13 -2.75E+00 1.46E-03 2.25E-05 -9.20E-06 7.14E-07 -3.33E-08 1.01E-09 -1.95E-11 2.15E-13 -1.04E-15 14 1.69E-01 -1.05E-03 3.55E-04 -3.04E-05 1.62E-06 -5.90E-08 1.46E-09 -2.34E-11 2.17E-13 -8.86E-16

[0279] Table 14

[0280] Example 8

[0281] like Figure 8 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter and an imaging surface IMA.

[0282] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is convex. The third lens L3 has positive power, the first side surface S6 of the third lens is convex, and the second side surface S7 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S8 of the fourth lens is convex, and the second side surface S9 of the fourth lens is convex. The fifth lens L5 has negative power, the first side surface S10 of the fifth lens is convex, and the second side surface S11 of the fifth lens is concave. The sixth lens L6 has positive power, the first side surface S11 of the sixth lens is convex, and the second side surface S12 of the sixth lens is convex. The seventh lens L7 has negative power, the first side surface S13 of the seventh lens is concave, and the second side surface S14 of the seventh lens is convex. The filter has a first side surface S15 of the filter and a second side surface S16 of the filter. Light from the object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface IMA.

[0283] In this example, the focal length F of the optical lens is 10.0991 mm, the total length TTL of the optical lens is 38.6387 mm, and the maximum field of view FOV of the optical lens is 130°.

[0284] Table 15 shows the basic structural parameters of the optical lens of Example 8, where the units of the radius of curvature and the thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0285] Surf Radius Thickness Nd Vd 1 6.5636 3.0808 1.69 53.15 2 3.8619 3.4191 3 -11.9360 6.9342 1.81 40.99 4 -22.6833 0.4928 STO Infinity 0.1295 6 18.6929 4.8572 1.59 61.15 7 -10.2715 1.4095 8 36.3202 3.6370 1.50 81.61 9 -14.3132 0.3469 10 179.0621 1.3925 3.50 99.94 11 7.9554 6.5307 1.59 68.62 12 -10.8681 2.4468 13 -5.3977 1.8317 1.81 40.99 14 -9.6045 1.1950 15 Infinity 0.5000 1.52 64.21 16 Infinity 0.4350 IMA / /

[0286] Table 15

[0287] In this example, the first lens, the second lens, the third lens and the seventh lens are aspherical lenses. Table 16 below shows the conic coefficient k and the coefficients of the higher-order terms that can be used for the aspherical lens surfaces in this example.

[0288] Surf K A B C D E F G H I 1 -3.37E+00 3.16E-04 -5.04E-05 6.73E-07 1.96E-08 -6.19E-10 2.52E-12 1.14E-13 -1.77E-15 8.04E-18 2 -1.79E+00 -1.98E-04 -1.03E-04 1.24E-06 7.71E-07 -8.45E-08 4.91E-09 -1.69E-10 3.26E-12 -2.67E-14 3 4.10E-02 -2.98E-05 1.97E-06 -8.06E-07 1.63E-07 -1.37E-08 6.37E-10 -1.74E-11 2.53E-13 -1.47E-15 4 -9.97E+00 2.86E-04 -1.16E-07 2.87E-07 -4.31E-08 3.05E-09 -1.57E-10 4.90E-12 -8.39E-14 6.04E-16 6 8.23E+00 1.28E-04 -9.69E-06 2.14E-06 -2.83E-07 2.38E-08 -1.28E-09 4.24E-11 -7.83E-13 6.18E-15 7 -4.74E+00 -2.93E-04 2.96E-05 -3.99E-06 5.25E-07 -4.25E-08 2.14E-09 -6.48E-11 1.07E-12 -7.41E-15 13 -3.02E+00 1.46E-03 2.25E-05 -9.20E-06 7.14E-07 -3.33E-08 1.01E-09 -1.95E-11 2.15E-13 -1.04E-15 14 5.57E-01 -1.05E-03 3.55E-04 -3.04E-05 1.62E-06 -5.90E-08 1.46E-09 -2.34E-11 2.17E-13 -8.86E-16

[0289] Table 16

[0290] Example 9

[0291] like Fig. 9 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter and an imaging surface IMA.

[0292] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is convex. The third lens L3 has positive power, the first side surface S6 of the third lens is convex, and the second side surface S7 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S8 of the fourth lens is convex, and the second side surface S9 of the fourth lens is convex. The fifth lens L5 has positive power, the first side surface S10 of the fifth lens is convex, and the second side surface S11 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S11 of the sixth lens is concave, and the second side surface S12 of the sixth lens is concave. The seventh lens L7 has positive power, the first side surface S13 of the seventh lens is convex, and the second side surface S14 of the seventh lens is convex. The filter has a first side surface S15 of the filter and a second side surface S16 of the filter. Light from the object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface IMA.

[0293] In this example, the focal length F of the optical lens is 10.1929 mm, the total length TTL of the optical lens is 40.6417 mm, and the maximum field of view FOV of the optical lens is 130°.

[0294] The first side surface S1 of the first lens has an inflection point.

[0295] Table 17 shows the basic structural parameters of the optical lens of Example 9, where the units of the radius of curvature and the thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0296] Surf Radius Thickness Nd Vd 1 6.2922 3.3551 1.59 61.15 2 3.4533 3.2450 3 -13.4827 7.4880 1.81 40.99 4 -25.2002 1.4808 STO Infinity 0.0999 6 16.4825 4.9182 1.50 81.61 7 -9.8067 0.1010 8 76.6629 5.6065 1.50 81.61 9 -9.7913 0.0999 10 142.2530 4.2373 1.50 81.61 11 -6.7764 0.7112 1.65 33.84 12 20.8481 3.3865 13 336.4588 3.7512 1.59 61.15 14 -125.4431 1.2260 15 Infinity 0.5000 1.52 64.20 16 Infinity 0.4350 IMA / /

[0297] Table 17

[0298] In this example, the first lens, the second lens, the third lens and the seventh lens are aspherical lenses. Table 18 below shows the conic coefficient k and the coefficients of the higher-order terms that can be used for the aspherical lens surfaces in this example.

[0299]

[0300]

[0301] Table 18

[0302] Example 10

[0303] like Fig.10 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter and an imaging surface IMA.

[0304] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is convex. The third lens L3 has positive power, the first side surface S6 of the third lens is convex, and the second side surface S7 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S8 of the fourth lens is convex, and the second side surface S9 of the fourth lens is convex. The fifth lens L5 has positive power, the first side surface S10 of the fifth lens is convex, and the second side surface S11 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S11 of the sixth lens is concave, and the second side surface S12 of the sixth lens is concave. The seventh lens L7 has positive power, the first side surface S13 of the seventh lens is convex, and the second side surface S14 of the seventh lens is convex. The filter has a first side surface S15 of the filter and a second side surface S16 of the filter. Light from the object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface IMA.

[0305] In this example, the focal length F of the optical lens is 10.2509 mm, the total length TTL of the optical lens is 40.796 mm, and the maximum field of view FOV of the optical lens is 130°.

[0306] The first side surface S1 of the first lens has an inflection point.

[0307] Table 19 shows the basic structural parameters of the optical lens of Example 10, where the units of the radius of curvature and the thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0308]

[0309]

[0310] Table 19

[0311] In this example, the first lens, the second lens, the third lens and the seventh lens are aspherical lenses. Table 20 below shows the conic coefficient k and the coefficients of the higher-order terms that can be used for the aspherical lens surfaces in this example.

[0312] Surf K A B C D E F G H I 1 -3.54E+00 4.72E-04 -5.95E-05 8.07E-07 1.90E-08 -6.19E-10 2.52E-12 1.14E-13 -1.77E-15 8.04E-18 2 -1.57E+00 -3.02E-04 -1.32E-04 2.36E-06 7.48E-07 -8.45E-08 4.91E-09 -1.69E-10 3.26E-12 -2.67E-14 3 3.69E-01 1.41E-05 -3.30E-06 -9.15E-07 1.70E-07 -1.37E-08 6.37E-10 -1.74E-11 2.53E-13 -1.47E-15 4 -1.73E+01 1.68E-04 2.01E-06 2.48E-07 -4.18E-08 3.05E-09 -1.57E-10 4.90E-12 -8.38E-14 6.04E-16 6 1.82E+00 7.56E-05 -9.19E-06 2.10E-06 -2.82E-07 2.38E-08 -1.28E-09 4.24E-11 -7.83E-13 6.18E-15 7 6.76E-01 3.77E-04 2.28E-05 -3.85E-06 5.21E-07 -4.25E-08 2.14E-09 -6.48E-11 1.07E-12 -7.41E-15 13 -6.55E+00 3.06E-04 7.79E-05 -1.01E-05 7.18E-07 -3.33E-08 1.01E-09 -1.95E-11 2.15E-13 -1.04E-15 14 -1.05E+02 -4.27E-03 4.46E-04 -3.18E-05 1.62E-06 -5.90E-08 1.46E-09 -2.34E-11 2.17E-13 -8.86E-16

[0313] Table 20 In summary, Examples 1 to 12 satisfy the relationship shown in Table 21.

[0314] Parameters / Examples 1 2 3 4 5 6 7 8 9 10 TTL / F 4.202132521 4.121617396 3.778099242 4.181563287 3.709138176 3.928635855 3.878186858 3.825954788 3.987255835 3.97974812 F / ENPD 1.660002845 1.599996772 1.600015534 1.584512621 1.598980392 1.585090338 1.607090196 1.584172549 1.598886275 1.607984314 TTL / DMAX 2.982378378 2.724306667 2.733299151 2.843546667 2.70065 2.642426667 2.648853333 2.575913333 2.727630872 2.737986577 TTL / H / FOV 0.028063072 0.025993375 0.024856316 0.027130179 0.024134233 0.025196924 0.025208832 0.024560858 0.025826818 0.025948023 (FOV×F) / H 112.8631528 106.5814673 111.1860002 109.6479956 109.9631563 108.3908103 109.8526913 108.4901747 109.4670709 110.1882752 DMAX / H / F 0.116455798 0.125103784 0.114776112 0.121596959 0.113968603 0.122867074 0.120758505 0.122736284 0.120762164 0.120186118 (H / 2) / (F*tan(θ / 2)) 0.268565125 0.284393784 0.272616217 0.276440135 0.275647842 0.279646463 0.275925026 0.27939034 0.276897029 0.275084683 F / H 0.868178099 0.819857441 0.855276924 0.84344612 0.845870433 0.833775464 0.845020702 0.834539805 0.842054392 0.847602117 arctan(1 / K(S1)) 3.3112 0.4424 -3.7418 2.0657 -0.983 0.96 2.7165 3.1811 -1.8972 -2.0579 arctan(SAG1 / D1) 0.113730074 0.105612242 0.059533564 0.10160227 0.099272597 0.104821066 0.099147173 0.100955615 0.092653417 0.092673379 arctan(SAG2 / D2) 0.215213425 0.213033371 0.221983881 0.208998041 0.213845369 0.228848118 0.214692222 0.216303775 0.218994673 0.219436389 |arctan(SAG11 / D11)| 0.214624401 0.191970366 0.219187282 0.203238859 0.181630442 0.195772069 0.234449829 0.219070047 0.209870182 0.210129653 R14 / F -1.138128332 -1.57241268 -1.472209008 -2.489995392 -1.627703929 -0.941600341 -0.824210362 -0.951025339 -12.30690971 -12.20183594 F3 / F4 1.25055525 1.152382396 0.859857224 0.669871228 0.581007639 0.469236787 0.562718757 0.566580475 0.738844887 0.725806986 d67 / TTL 0.069466597 0.080216128 0.054647589 0.062180563 0.054595322 0.075511399 0.05742359 0.063325112 0.083325747 0.083155211 R3 / R4 0.933655591 0.877157735 1.525851478 0.851239967 1.272160962 1.049221262 0.541662103 0.526202096 0.535023532 0.536757826 F7 / F6 -11.67254403 -3.917178355 -1.828964968 -3.366630931 -2.072291394 -3.789107738 -2.380116013 -2.120908589 -19.9494791 -19.90103034

[0315] Tables 21 and 22 give the focal length values ​​F (unit: mm) of the entire group of optical lenses of Examples 1 to 10.

[0316]

[0317]

[0318] Table 22

[0319] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0320] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0321] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0322] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An optical lens, characterized in that: include: A first lens, wherein the first lens has negative optical power, a first side surface of the first lens is a convex surface, and a second side surface of the first lens is a concave surface; a second lens, the second lens having optical power, a first side surface of the second lens being a concave surface, and a second side surface of the second lens being a convex surface; A third lens, the third lens has positive power, a first side surface of the third lens is a convex surface, and a second side surface of the third lens is a convex surface; a fourth lens having positive optical power, wherein the second side surface of the fourth lens is a convex surface; a fifth lens having optical power; a sixth lens, the sixth lens having optical power, and the first side surface of the sixth lens and the second side surface of the sixth lens having the same surface shape; A seventh lens has optical power, and a second side surface of the seventh lens is a convex surface.

2. The optical lens according to claim 1, characterized in that: The total length TTL of the optical lens and the focal length F of the optical lens satisfy: TTL / F≤6.

3. The optical lens according to claim 1, characterized in that: An entrance pupil diameter EPND of the optical lens and a focal length value F of the optical lens satisfy: F / EPND≤2.

2.

4. The optical lens according to claim 1, characterized in that: The total length TTL of the optical lens and the maximum aperture DMAX of all lenses in the optical lens satisfy the following condition: TTL / DMAX≤5.

5. The optical lens according to claim 1, characterized in that: The total length TTL of the optical lens, the maximum field of view FOV of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following relationship: TTL / H / FOV≤0.

06.

6. The optical lens according to claim 1, characterized in that: The focal length value F of the optical lens, the maximum field of view FOV of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following: (FOV×F) / H≥80.

7. The optical lens according to claim 1, characterized in that: The maximum aperture DMAX of all lenses in the optical lens, the maximum field of view FOV of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following: DMAX / H / FOV≤0.

2.

8. The optical lens according to claim 1, characterized in that: The radian θ of the maximum field angle of the optical lens, the focal length F of the optical lens and the image height H corresponding to the maximum field angle of the optical lens satisfy: (H / 2) / (F*tan(θ / 2))≥0.

1.

9. An optical lens, characterized in that: include: a first lens having negative optical power; a second lens having optical power; a third lens having positive optical power; a fourth lens having positive refractive power; a fifth lens having optical power; a sixth lens having optical power; a seventh lens having optical power; A curvature radius R14 of the second side surface of the seventh lens satisfies the focal length F of the optical lens: R14 / F≤-0.

001.

10. An electronic device, characterized in that: The invention comprises the optical lens according to any one of claims 1 to 9 and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

Images