Optical lens and electronic device

Abstract

The application discloses an optical lens and an electronic device comprising the same. The optical lens comprises, in order from a first side to a second side along an optical axis: a first lens with negative optical power, the first side of which is a convex surface and the second side of which is a concave surface; a second lens with negative optical power, the second side of which is a concave surface; a third lens with positive optical power, the first side of which is a convex surface and the second side of which is a convex surface; a fourth lens with positive optical power, the first side of which is a convex surface; a fifth lens with optical power; a sixth lens with optical power; and a seventh lens with positive optical power, the first side of which is a convex surface and the second side of which is a convex surface.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical elements, and more particularly, to an optical lens and an electronic device. BACKGROUND

[0002] At present, optical lenses are increasingly widely used in automobiles. In order to consider the appearance and the convenience of installation, most vehicle-mounted lenses are installed in a hidden manner. Therefore, the market has higher requirements for the small aperture and miniaturization of vehicle-mounted lenses.

[0003] With the rise of the surround view camera, driving assistance system and unmanned driving market, vehicle-mounted lenses are increasingly applied to the automobile auxiliary driving system. Vehicle-mounted lenses need to be developed in cooperation with chips to have a million-level definition. At the same time, vehicle-mounted lenses not only need to meet the requirement of realizing high-definition imaging, but also need to meet the requirement of realizing low distortion of full-frame images to adapt to the low-distortion images obtained by subsequent electronic image correction algorithms to achieve better visual experience. However, the lenses on the market cannot meet the requirements of small aperture and miniaturization and high resolution. In particular, the lenses on the market cannot meet the requirement of weak ghost image for intelligent driving. The ghost image will cause the automatic driving assistance system to misjudge the real road conditions, and in severe cases, it will endanger the lives of people in the vehicle. Therefore, vehicle-mounted lenses also need to meet the requirement of weak ghost image.

[0004] In addition, since vehicle-mounted lenses are in a working environment with large temperature difference, vehicle-mounted lenses should have good thermal stability to reduce the influence of temperature on imaging performance. However, in order to achieve low cost and lightness, the lenses on the market have poor system thermal stability, resulting in unclear images under high and low temperature conditions. Even if the system returns to normal temperature from high and low temperature conditions, the resolution is difficult to meet the requirements.

[0005] In summary, in the field of 3C electronic products and automobile cameras, consumers have higher requirements for the imaging quality and size of the camera module. SUMMARY

[0006] The present application provides an optical lens, which comprises, in order from a first side to a second side along an optical axis: a first lens having a negative focal power, a first side of which is a convex surface and a second side of which is a concave surface; a second lens having a negative focal power, a second side of which is a concave surface; a third lens having a positive focal power, a first side of which is a convex surface and a second side of which is a convex surface; a fourth lens having a positive focal power, a first side of which is a convex surface; a fifth lens having a focal power; a sixth lens having a focal power; and a seventh lens having a positive focal power, a first side of which is a convex surface and a second side of which is a convex surface. In one embodiment, the first side of the first lens is a convex surface.

[0007] In one embodiment, the first side of the second lens is a convex surface.

[0008] In an embodiment, the first side surface of the second lens is concave.

[0009] In an embodiment, the second side surface of the fourth lens is convex.

[0010] In an embodiment, the second side surface of the fourth lens is concave.

[0011] In an embodiment, the fifth lens has positive refractive power, the first side surface of the fifth lens is convex, and the second side surface of the fifth lens is convex.

[0012] In an embodiment, the fifth lens has negative refractive power, the first side surface of the fifth lens is concave, and the second side surface of the fifth lens is concave.

[0013] In an embodiment, the sixth lens has negative refractive power, the first side surface of the sixth lens is concave, and the second side surface of the sixth lens is concave.

[0014] In an embodiment, the sixth lens has negative refractive power, the first side surface of the sixth lens is concave, and the second side surface of the sixth lens is convex.

[0015] In an embodiment, the sixth lens has positive refractive power, the first side surface of the sixth lens is convex, and the second side surface of the sixth lens is convex.

[0016] In an embodiment, a radius of curvature r7 of the first side surface of the fourth lens and a central thickness d7 of the fourth lens satisfy: 0≤r7 / d7≤100.

[0017] In an embodiment, a total effective focal length F of the optical lens, a radius of curvature r7 of the first side surface of the fourth lens, and a radius of curvature r8 of the second side surface of the fourth lens satisfy: 0.20≤|F / r7|+|F / r8|≤1.0.

[0018] In an embodiment, the fifth lens and the sixth lens are cemented to form a cemented lens, and a sagittal height SAG(11) of a cemented surface between the fifth lens and the sixth lens and a central thickness d11 of the sixth lens satisfy: -3≤arctan(SAG(11) / d11)≤0.5.

[0019] In an embodiment, a focal length F56 of a cemented lens group composed of the fifth lens and the sixth lens and a total effective focal length F of the optical lens satisfy: 5≤|F56 / F|≤65.

[0020] In an embodiment, a maximum field of view FOV of the optical lens, a maximum entrance pupil diameter D of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, and an image height H corresponding to the maximum field of view of the optical lens satisfy: D / H / FOV×180°≤9.

[0021] In an embodiment, the maximum half-field diameter D7 of the first side surface of the fourth lens corresponding to the maximum field angle of the optical lens, the radius of curvature r7 of the first side surface of the fourth lens, and the sag (7) of the first side surface of the fourth lens satisfy: 0≤arctan(D7 / (r7-SAG(7)))≤0.8.

[0022] In an embodiment, the refractive index Nd1 of the first lens satisfies: 1.6≤Nd1.

[0023] In an embodiment, the total effective focal length F of the optical lens and the focal length F3 of the third lens satisfy: 1≤F3 / F≤10.

[0024] In an embodiment, the optical lens further comprises a diaphragm arranged between the fourth lens and the fifth lens, the optical total track length TTL of the optical lens, the central thickness d7 of the fourth lens, the interval distance d8 between the fourth lens and the diaphragm, the interval distance d9 between the diaphragm and the fifth lens, the central thickness d10 of the fifth lens, and the central thickness d11 of the sixth lens satisfy: (d7+d8+d9+d10+d11) / TTL≤1.

[0025] In an embodiment, the maximum half-field diameter D22 of the second side surface of the second lens corresponding to the maximum field angle of the optical lens and the sag (4) of the second side surface of the second lens satisfy: 0.4≤SAG(4) / D22≤1.5.

[0026] In an embodiment, the optical total track length TTL of the optical lens and the optical back focal length BFL of the optical lens satisfy: 0.01≤BFL / TTL.

[0027] In an embodiment, the edge angle θ1 of the first side surface of the second lens at the maximum field angle and the central angle θ2 of the first side surface of the second lens satisfy: -50°≤θ1-θ2≤-5°.

[0028] In an embodiment, the radius of curvature r5 of the first side surface of the third lens and the central thickness d5 of the third lens satisfy: 0.01≤r5 / d5.

[0029] In an embodiment, the focal length F7 of the seventh lens and the total effective focal length F of the optical lens satisfy: F7 / F≤3.9.

[0030] In an embodiment, the central thickness d3 of the second lens and the air interval d4 between the second lens and the third lens satisfy: 0.15≤d3 / d4≤0.75.

[0031] In an embodiment, the radius of curvature r5 of the first side surface of the third lens and the total effective focal length F of the optical lens satisfy: 3≤r5 / F≤10.

[0032] In an embodiment, the optical lens further comprises a diaphragm disposed between the fourth lens and the fifth lens, a spacing d8 between the fourth lens and the diaphragm and a spacing d9 between the diaphragm and the fifth lens satisfy: 0.01≤(d8+d9) / TTL≤0.1.

[0033] In an embodiment, a center thickness d1 of the first lens, a center thickness d3 of the second lens and a total optical length TTL of the optical lens satisfy: 0.01≤(d1+d3) / TTL≤0.3.

[0034] In an embodiment, an aperture of the first side surface of the second lens is a sag when an aperture of the first side surface of the second lens is a sag when satisfies: and

[0035] Another aspect of the present application provides an optical lens. The optical lens comprises, in order from a first side to a second side along an optical axis: a first lens having a negative optical power; a second lens having a negative optical power; a third lens having a positive optical power; a fourth lens having a positive optical power; a fifth lens having an optical power; a sixth lens having an optical power; and a seventh lens having a positive optical power; a total effective focal length F of the optical lens, a curvature radius r7 of a first side surface of the fourth lens and a curvature radius r8 of a second side surface of the fourth lens satisfy: 0.20≤|F / r7|+|F / r8|≤1.0.

[0036] In an embodiment, the first side surface of the first lens is convex and the second side surface is concave.

[0037] In an embodiment, the first side surface of the second lens is convex and the second side surface is concave.

[0038] In an embodiment, the first side surface of the second lens is concave and the second side surface is concave.

[0039] In an embodiment, the first side surface of the third lens is convex and the second side surface is convex.

[0040] In an embodiment, the first side surface of the fourth lens is convex and the second side surface is convex.

[0041] In an embodiment, the first side surface of the fourth lens is convex and the second side surface is concave.

[0042] In an embodiment, the fifth lens has a positive optical power, the first side surface is convex and the second side surface is convex.

[0043] In an embodiment, the fifth lens has negative refractive power, the first side surface is concave, and the second side surface is concave.

[0044] In an embodiment, the sixth lens has negative refractive power, the first side surface is concave, and the second side surface is concave.

[0045] In an embodiment, the sixth lens has negative refractive power, the first side surface is concave, and the second side surface is convex.

[0046] In an embodiment, the sixth lens has positive refractive power, the first side surface is convex, and the second side surface is convex.

[0047] In an embodiment, the first side surface of the seventh lens is convex, and the second side surface is convex.

[0048] In an embodiment, the radius of curvature r7 of the first side surface of the fourth lens and the central thickness d7 of the fourth lens satisfy: 0≤r7 / d7≤100.

[0049] In an embodiment, the fifth lens and the sixth lens are cemented to form a cemented lens, and the sag (11) of the cemented surface between the fifth lens and the sixth lens and the central thickness d11 of the sixth lens satisfy: -3≤arctan(SAG(11) / d11)≤0.5.

[0050] In an embodiment, the focal length F56 of the cemented lens group composed of the fifth lens and the sixth lens and the total effective focal length F of the optical lens satisfy: 5≤|F56 / F|≤65.

[0051] In an embodiment, the maximum field of view FOV of the optical lens, the maximum entrance pupil diameter D of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens satisfy: D / H / FOV×180°≤9.

[0052] In an embodiment, the maximum entrance pupil half diameter D7 of the first side surface of the fourth lens corresponding to the maximum field of view of the optical lens, the radius of curvature r7 of the first side surface of the fourth lens, and the sag (7) of the first side surface of the fourth lens satisfy: 0≤arctan(D7 / (r7-SAG(7)))≤0.8.

[0053] In an embodiment, the refractive index Nd1 of the first lens satisfies: 1.6≤Nd1.

[0054] In an embodiment, the total effective focal length F of the optical lens and the focal length F3 of the third lens satisfy: 1≤F3 / F≤10.

[0055] In an embodiment, the optical lens further comprises a stop disposed between the fourth lens and the fifth lens, the optical total track length TTL of the optical lens, the center thickness d7 of the fourth lens, the separation distance d8 between the fourth lens and the stop, the separation distance d9 between the stop and the fifth lens, the center thickness d10 of the fifth lens and the center thickness d11 of the sixth lens satisfy: (d7+d8+d9+d10+d11) / TTL≤1.

[0056] In an embodiment, the maximum field angle of view of the optical lens corresponds to the maximum half-field radius D22 of the second side of the second lens and the sag (4) of the second side of the second lens satisfy: 0.4≤SAG(4) / D22≤1.5.

[0057] In an embodiment, the optical total track length TTL of the optical lens and the optical back focal length BFL of the optical lens satisfy: 0.01≤BFL / TTL.

[0058] In an embodiment, the edge angle θ1 of the first side of the second lens at the maximum field angle of view and the central angle θ2 of the first side of the second lens satisfy: -50°≤θ1-θ2≤-5°.

[0059] In an embodiment, the radius of curvature r5 of the first side of the third lens and the center thickness d5 of the third lens satisfy: 0.01≤r5 / d5.

[0060] In an embodiment, the focal length F7 of the seventh lens and the total effective focal length F of the optical lens satisfy: F7 / F≤3.9.

[0061] In an embodiment, the center thickness d3 of the second lens and the air separation d4 between the second lens and the third lens satisfy: 0.15≤d3 / d4≤0.75.

[0062] In an embodiment, the radius of curvature r5 of the first side of the third lens and the total effective focal length F of the optical lens satisfy: 3≤r5 / F≤10.

[0063] In an embodiment, the optical lens further comprises a stop disposed between the fourth lens and the fifth lens, the separation d8 between the fourth lens and the stop and the separation d9 between the stop and the fifth lens satisfy: 0.01≤(d8+d9) / TTL≤0.1.

[0064] In an embodiment, the center thickness d1 of the first lens, the center thickness d3 of the second lens and the optical total track length TTL of the optical lens satisfy: 0.01≤(d1+d3) / TTL≤0.3.

[0065] In an embodiment, the sag of the first side of the second lens is when the aperture is the sag of the first side surface of the second lens is when the aperture is satisfies: and

[0066] Another aspect of the present application provides an electronic device. The electronic device includes the optical lens provided by the present application and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

[0067] The present application adopts seven lenses, and by optimizing the shape, focal power, etc. of each lens, the optical lens has at least one of the following beneficial effects: miniaturization, small aperture, high resolution, large field of view, long back focal length, weak ghost image, good temperature performance, and low assembly sensitivity. BRIEF DESCRIPTION OF DRAWINGS

[0068] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of the embodiments when read in conjunction with the accompanying drawings. In the drawings:

[0069] Figure 1 FIG. 1 is a structural schematic diagram of an optical lens according to an embodiment of the present application;

[0070] Figure 2 FIG. 2 is a structural schematic diagram of an optical lens according to another embodiment of the present application;

[0071] Figure 3 FIG. 3 is a structural schematic diagram of an optical lens according to another embodiment of the present application;

[0072] Figure 4 FIG. 4 is a structural schematic diagram of an optical lens according to another embodiment of the present application;

[0073] Figure 5 FIG. 5 is a structural schematic diagram of an optical lens according to another embodiment of the present application;

[0074] Figure 6 FIG. 6 is a structural schematic diagram of an optical lens according to another embodiment of the present application;

[0075] Figure 7 FIG. 7 is a structural schematic diagram of an optical lens according to another embodiment of the present application;

[0076] Figure 8 FIG. 8 is a structural schematic diagram of an optical lens according to another embodiment of the present application;

[0077] Figure 9 FIG. 9 is a structural schematic diagram of an optical lens according to another embodiment of the present application;

[0078] Figure 10 FIG. 8 shows a schematic diagram of an optical lens according to Embodiment 10 of the present application;

[0079] Figure 11 FIG. 9 shows a schematic diagram of an optical lens according to Embodiment 11 of the present application; and

[0080] Figure 12 FIG. 10 shows a schematic diagram of an optical lens according to Embodiment 12 of the present application. DETAILED DESCRIPTION

[0081] For the purposes of promoting an understanding of the principles of the application, reference will now be made to the embodiments illustrated in the drawings. It is expressly understood that the drawings are only exemplary and are therefore not intended as a definition of the limits of the application. In this specification, like reference characters signify like elements in the figures. The use of the expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0082] It should be noted that the terms first, second, third, etc. are used herein only to distinguish one element from another, and do not imply any limitation on the features. Thus, a first lens discussed below could also be termed a second lens or a third lens, without departing from the teachings of the present application.

[0083] In the drawings, the thickness, size, and shape of the lenses have been exaggerated slightly for the sake of explanation. Specifically, the shape of the spherical or aspherical surface shown in the drawings is shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings. The drawings are merely examples and are not drawn to scale.

[0084] In this specification, the paraxial region refers to a region near the optical axis. If a lens surface is convex and the position of the convex surface is not specified, it means that the lens surface is convex at least in the paraxial region. If a lens surface is concave and the position of the concave surface is not specified, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the first side is referred to as the first side surface of the lens, and the surface of each lens closest to the second side is referred to as the second side surface of the lens. The surface closest to the second side in the optical lens is referred to as the second side surface of the optical lens. By way of example, the first side can be the object side, and the second side can be the image side; or, the first side can be the imaging side, and the second side can be the image source side.

[0085] It should also be understood that the terms "comprises," "including," "having," "includes," and / or "comprising," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present application, "may" is used to mean "one or more embodiments of the present application." And, the term "exemplary" is intended to refer to an example or illustration.

[0086] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art to which this application belongs. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and will not be interpreted in an idealized or overly formal sense unless expressly defined as such herein.

[0087] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0088] The features, principles and other aspects of the present application are described in detail below.

[0089] In an exemplary embodiment, the optical lens includes, for example, seven lenses having optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens, which are arranged in sequence from the first side to the second side along the optical axis.

[0090] In exemplary embodiments, the optical lens provided herein can be used, for example, as an automotive lens. In this case, the first side of the optical lens can be the object side, and the second side can be the image side. Light from the object side can form an image on the image side. The second side of the optical lens is the imaging surface of the optical lens.

[0091] In exemplary embodiments, the optical lens provided herein can be used, for example, as a projection lens or a laser radar transmitter lens. In this case, the second side of the optical lens can be the image source side, and the first side can be the imaging side. Light from the image source side can be imaged on the imaging side. The second side of the optical lens is the image source side of the optical lens.

[0092] In an exemplary embodiment, the optical lens may further include a photosensitive element disposed on the second side surface. Optionally, the photosensitive element disposed on the second side surface may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS).

[0093] In the example embodiment, the first lens can have a negative focal power, and the first lens can have a convex-concave surface shape. Such a focal power and surface shape of the first lens can avoid excessive divergence of light rays on the first side, facilitate control of the aperture of the rear lens, and achieve a miniaturized design. Preferably, the first lens can use a material with high refractive index and high hardness, which is conducive to reducing the front aperture, and a non-spherical lens can also be selected to further improve the resolution quality. The first side is designed as a convex surface, which is conducive to the sliding of water droplets in actual use environment such as rainy and snowy weather, and reduces the influence on imaging. Preferably, the first lens can be designed as a meniscus shape, which is conducive to collecting light rays of a large field of view into the rear optical system, and is conducive to increasing the luminous flux of the optical lens.

[0094] In the example embodiment, the second lens can have a negative focal power. The second lens can have a convex-concave surface shape. The second lens is a non-spherical lens with a negative focal power. When the first side of the second lens is concave, it is conducive to dispersing the central light rays and the edge light rays of each field of view, expanding the aperture, increasing the system illumination, and facilitating correction of the aberration of the edge light rays and the central light rays to achieve high resolution. The first side of the second lens is a convex surface, so that the exiting light rays after the first lens are almost perpendicular to the first side of the second lens, which is conducive to smooth transition of the light rays, reduces the loss of light energy, and is conducive to the illumination of the peripheral field of view. When the first side of the second lens is concave, the central part is convex and the edge part is concave, so that the edge light rays entering the second lens have a significant light turning, changes the trend of the large-angle light rays, is conducive to collecting the large-angle light rays in a limited space, and is conducive to reducing the front aperture of the first lens under the same field of view angle. When the first side of the second lens is concave, it plays a great role in reducing the ghost image generated by the reflection of the large-field light rays on the edge of the second side of the first lens and the edge of the first side of the second lens.

[0095] In the example embodiment, the second lens can have a negative focal power. The second lens can have a double-concave surface shape. The second lens is a non-spherical lens with a negative focal power. When the first side of the second lens is not concave, it is conducive to dispersing the central light rays and the edge light rays of each field of view, expanding the aperture, increasing the system illumination, and facilitating correction of the aberration of the edge light rays and the central light rays to achieve high resolution. The first side of the second lens is a concave surface, which can rapidly accumulate the optical path difference between the edge field of view light rays and the central field of view light rays, correct the aberration of the edge field of view, and improve the resolution.

[0096] In the example embodiment, the third lens can have positive refractive power. The third lens can have a biconvex surface shape. The third lens has positive refractive power and a biconvex surface shape and a gentle lens shape, so that a large temperature change has a small effect on the focal length of the third lens, which is conducive to maintaining the performance of the entire optical system within a large temperature change range. The first side surface of the third lens is convex, which is matched with the second lens having negative refractive power, so as to facilitate the light to enter the rear lens gently and improve the resolution.

[0097] In the example embodiment, the fourth lens can have positive refractive power. The fourth lens can have a biconvex surface shape.

[0098] The fourth lens is aspherical, has positive refractive power and a gentle lens shape, so that the divergent light is successfully converged into the rear lens, further makes the light transition stable, and is easy to obtain small aberration and achieve high resolution. The second side surface of the fourth lens is convex, and the edge field light is deflected upward on the second side surface of the fourth lens, which is conducive to reducing the rear aperture of the optical system.

[0099] In the example embodiment, the fourth lens can have positive refractive power. The fourth lens can have a biconvex surface shape.

[0100] The fourth lens is aspherical, has positive refractive power and a gentle lens shape, so that the light is almost vertically incident to the second side surface of the fourth lens, the light is too gentle, the aberration is small, which is conducive to achieving high resolution and improving the resolution capability of the optical system. The bending direction of the first side surface of the fourth lens is consistent with the bending direction of the second side surface of the fifth lens, which can effectively reduce the physical distance between the fourth lens and the fifth lens, reduce the total length of the system, and realize miniaturization.

[0101] In the example embodiment, the fifth lens can have positive refractive power. The fifth lens can have a biconvex surface shape.

[0102] The fifth lens is aspherical, has positive refractive power and a gentle lens shape, the fifth lens has such refractive power and surface shape, which converges the light and makes the light converge on the second side surface relatively stably, can improve the astigmatism and field curvature of imaging, and improve the resolution capability of the optical system. The fifth lens has a biconvex surface shape and a gentle lens shape, which is conducive to making the divergent light converge into the rear lens successfully and further making the light transition stable.

[0103] In the example embodiment, the fifth lens can have a negative focal power. The fifth lens can have a biconcave surface shape. The fifth lens is aspherical, has a negative focal power and a lens shape tends to be flat, and such a focal power and surface shape of the fifth lens are advantageous for a smooth transition of the edge field of view and the center field of view optical path difference. The fifth lens is a biconcave negative focal power lens, the first side surface is concave, so that the light rays entering the rear have a significant light ray turning, the edge light rays and the center light rays of each field of view are clearly distinguished, the trend of the edge light rays is changed, which is advantageous for aberration correction of the center and edge light rays of each field of view, and is advantageous for achieving high resolution.

[0104] In the example embodiment, the sixth lens can have a negative focal power. The sixth lens can have a biconcave surface shape. The sixth lens is aspherical and has a negative focal power, and such a focal power and surface shape of the sixth lens are advantageous for collecting light rays entering through the fifth lens and for a smooth transition of the front light rays. The first side surface and the second side surface of the sixth lens are both concave, the light rays of the edge field of view will have a larger optical path than the light rays of the center field of view after passing through the sixth lens, the light ray trend of the edge field of view is changed, so that the light rays are more concentrated when reaching the second side surface, which is advantageous for correcting the aberration of the edge field of view and achieving high resolution.

[0105] In the example embodiment, the sixth lens can have a negative focal power. The sixth lens can have a biconcave surface shape. The sixth lens is aspherical and has a negative focal power, and such a focal power and surface shape of the sixth lens are advantageous for collecting light rays entering through the fifth lens and for a smooth transition of the front light rays. The first side surface and the second side surface of the sixth lens are both concave, the light rays of the edge field of view will have a larger optical path than the light rays of the center field of view after passing through the sixth lens, the light ray trend of the edge field of view is changed, so that the light rays are more concentrated when reaching the second side surface, which is advantageous for correcting the aberration of the edge field of view and achieving high resolution.

[0106] In the example embodiment, the sixth lens can have a positive focal power. The sixth lens can have a biconcave surface shape. The sixth lens is aspherical and has a positive focal power, and such a focal power and surface shape of the sixth lens are such that the light rays converge before and after the sixth lens, the upward trend of the light rays is slowed down, the light energy loss caused by the large angle of the main light rays of the chip when the light rays of the large field of view reach the second side surface is avoided, and the illumination of the edge field of view is improved.

[0107] In the example embodiment, the seventh lens can have a positive focal power. The seventh lens can have a biconcave surface shape. The seventh lens is aspherical, has a positive focal power and a flat lens shape, and such a focal power and surface shape of the seventh lens are advantageous for the divergent light rays to smoothly enter the rear, further for a smooth transition of the light ray trend, for improving the astigmatism and field curvature of the imaging, and for improving the resolving power of the optical system.

[0108] In exemplary embodiments, a diaphragm for limiting the light beam can be arranged between the fourth lens and the fifth lens to further improve the imaging quality of the optical lens. Arranging the diaphragm between the fourth lens and the fifth lens is conducive to increasing the diaphragm aperture, effectively converging the light rays entering the optical system, reducing the lens aperture of the optical system, and reducing the assembly sensitivity of the system. In the embodiments of the present application, the diaphragm can be arranged near the first side surface of the fifth lens. However, it should be noted that the position of the diaphragm disclosed herein is only an example and not a limitation; in alternative embodiments, the diaphragm can also be arranged at other positions as needed.

[0109] In exemplary embodiments, the optical lens according to the present application can satisfy: 0≤r7 / d7≤100, where r7 is the radius of curvature of the first side surface of the fourth lens, and d7 is the center thickness of the fourth lens. More specifically, r7 and d7 can further satisfy: 1.5≤r7 / d7≤80. Satisfying 0≤r7 / d7≤100, the more curved the first side surface of the fourth lens is, the more conducive to correcting aberrations, and when the ratio of the radius of curvature of the first side surface of the fourth lens to the center thickness is within the control range interval, the light ray trend can be assisted to be gentle, and the aberrations can be better corrected, the imaging quality can be improved, and high resolution can be achieved.

[0110] In exemplary embodiments, the optical lens according to the present application can satisfy: 0.20≤|F / r7|+|F / r8|≤1.0, where F is the total effective focal length of the optical lens, r7 is the radius of curvature of the first side surface of the fourth lens, and r8 is the radius of curvature of the second side surface of the fourth lens. More specifically, F, r7 and r8 can further satisfy: 0.3≤|F / r7|+|F / r8|≤0.7. Satisfying 0.20≤|F / r7|+|F / r8|≤1.0 is conducive to reasonably controlling the radius of curvature of the fourth lens, assisting the incident light rays to enter the optical system, and making the light rays of the edge field more convergent on the second side surface to effectively correct the astigmatism and improve the imaging quality.

[0111] In exemplary embodiments, the optical lens according to the present application can satisfy: -3≤(arctan(SAG(11) / d11)≤0.5, where SAG(11) is the sagittal height of the cemented surface formed by cementing the fifth lens and the sixth lens, and d11 is the center thickness of the sixth lens. More specifically, SAG(11) and d11 can further satisfy: -2≤(arctan(SAG(11)) / d11≤0.2. Satisfying -3≤(arctan(SAG(11) / d11)≤0.5 is conducive to controlling the opening angle of the cemented surface and the center thickness, effectively restricting the light ray trend entering through the diaphragm, thereby improving the light transmission capability and resolution capability of the entire optical system, and effectively reducing the requirements for the cementing process of the cemented surface.

[0112] In exemplary embodiments, the optical lens according to the present application can satisfy: 5≤|F56 / F|≤65, wherein F56 is the focal length of the cemented lens group composed of the fifth lens and the sixth lens, and F is the total effective focal length of the optical lens. More specifically, F56 and F can further satisfy: 6.5≤|F56 / F|≤60. Satisfying 5≤|F56 / F|≤65 is conducive to controlling the light path between the fourth lens and the seventh lens, reducing aberration caused by large-angle light entering through the fourth lens, while making the lens structure compact, which is conducive to miniaturization. At the same time, the focal length of the cemented surface is reasonably distributed, which is conducive to the gentle entry of more light and improves the illumination.

[0113] In exemplary embodiments, the optical lens according to the present application can satisfy: D / H / FOVx180°≤9, wherein D is the maximum light passing diameter of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, FOV is the maximum field of view angle of the optical lens, and H is the image height corresponding to the maximum field of view angle of the optical lens. More specifically, D, FOV and H can further satisfy: D / H / FOVx180°≤5.4. Satisfying D / H / FOVx180°≤9 is conducive to reducing the front aperture and expanding the field of view angle, that is, both miniaturization and large field of view angle can be considered.

[0114] In exemplary embodiments, the optical lens according to the present application can satisfy: 0≤arctan(D7 / (r7-SAG(7)))≤0.8, wherein D7 is the maximum light passing half-diameter of the first side of the fourth lens corresponding to the maximum field of view angle of the optical lens, r7 is the curvature radius of the first side of the fourth lens, and SAG(7) is the sagitta of the first side of the fourth lens. More specifically, D7, r7 and SAG(7) can further satisfy: 0.1≤arctan(D7 / (r7-SAG(7)))≤0.6. Satisfying 0≤arctan(D7 / (r7-SAG(7)))≤0.8 is conducive to reasonably controlling the opening angle of the first side of the fourth lens within the conditional range, which helps to change the reflection path of the first side of the fourth lens and the chip protection glass, change the optical path, and is conducive to the light being more divergent when converging on the second side of the fourth lens, weakening the ghost image.

[0115] In exemplary embodiments, the optical lens according to the present application can satisfy: 1.6≤Nd1, wherein Nd1 is the lens refractive index of the first lens. More specifically, Nd1 can further satisfy: 1.7≤Nd1. Satisfying 1.6≤Nd1, the first lens preferably uses high refractive index material, which is conducive to the reduction of the front aperture and the improvement of the imaging quality.

[0116] In exemplary embodiments, the optical lens according to the present application can satisfy: 1≤F3 / F≤10, where F is the total effective focal length of the optical lens, and F3 is the focal length of the third lens. More specifically, F and F3 can further satisfy: 2≤F3 / F≤8. Satisfying 1≤F3 / F≤10, the third lens is preferably a glass lens, which is advantageous for reasonably distributing focal length, keeping the focal length of the third lens stable in a large temperature range, having good temperature performance, and keeping the performance of the entire optical lens stable when the temperature changes.

[0117] In exemplary embodiments, the optical lens according to the present application can satisfy: (d7+d8+d9+d10+d11) / TTL≤1, where TTL is the total optical length of the optical lens, d7 is the center thickness of the fourth lens, d8 is the separation distance between the fourth lens and the diaphragm, d9 is the separation distance between the diaphragm and the fifth lens, d10 is the center thickness of the fifth lens, and d11 is the center thickness of the sixth lens. The total optical length TTL of the optical lens can be the distance on the optical axis from the center of the first side surface of the first lens to the imaging surface of the optical lens. More specifically, TTL, d7, d8, d9, d10, and d11 can further satisfy: (d7+d8+d9+d10+d11) / TTL≤0.8. Satisfying (d7+d8+d9+d10+d11) / TTL≤1 is advantageous for the rapid transition of light between the fourth lens and the cemented lens, the short distance, i.e., the compact system structure, and the miniaturization.

[0118] In exemplary embodiments, the optical lens according to the present application can satisfy: 0.4≤SAG(4) / D22≤1.5, where D22 is the maximum half-field radius of the second side surface of the second lens corresponding to the maximum field of view angle of the optical lens, and SAG(4) is the sagitta of the second side surface of the second lens. More specifically, D22 and SAG(4) can further satisfy: 0.6≤SAG(4) / D22≤1.2. Satisfying 0.4≤SAG(4) / D22≤1.5 makes the second side surface of the second lens have a large opening angle and be controlled within a certain range, makes the light of each field of view have a divergent trend, and makes the central light and the edge light of each field of view distinct, which is advantageous for correcting the aberration of the central light and the edge light of each field of view and realizing high resolution.

[0119] In exemplary embodiments, the optical lens according to the present application can satisfy: 0.01≤BFL / TTL, wherein TTL is the total optical length of the optical lens, and BFL is the optical back focal length of the optical lens, i.e. the distance from the center of the second side surface of the seventh lens to the imaging surface of the optical lens on the optical axis. More specifically, BFL and TTL can further satisfy: 0.04≤BFL / TTL. Satisfying 0.01≤BFL / TTL, on the basis of realizing miniaturization, the back focal length is conducive to the assembly of the module, and at the same time, lengthening the back focal length is conducive to reducing the energy of ghost images generated by the center reflection of the lens and the color filter.

[0120] In exemplary embodiments, the optical lens according to the present application can satisfy: -50°≤θ1-θ2≤-5°, wherein θ1 is the edge angle of the first side surface of the second lens at the maximum field of view angle, and θ2 is the center angle of the first side surface of the second lens. More specifically, θ1 and θ2 can further satisfy: -45°≤θ1-θ2≤-8°. Satisfying -50°≤θ1-θ2≤-5°, when the first side surface of the second lens has a large reverse curvature, the optical path of the edge light can be quickly accumulated to reduce the optical path difference between the edge light and the center light, which is conducive to correcting the edge field aberration and realizing high resolution, and is also conducive to obtaining a large field of view angle more easily under the same chip size.

[0121] In exemplary embodiments, the optical lens according to the present application can satisfy: 0.01≤r5 / d5, wherein r5 is the radius of curvature of the first side surface of the third lens, and d5 is the center thickness of the third lens. More specifically, r5 and d5 can further satisfy: 1.5≤r5 / d5. Satisfying 0.01≤r5 / d5 is conducive to reasonably controlling the radius of curvature and the center thickness of the first side surface of the third lens, can reduce the deviation of the incidence angle and the exit angle of light rays at different fields of view, and make the light rays transition smoothly, thereby reducing the sensitivity.

[0122] In exemplary embodiments, the optical lens according to the present application can satisfy: F7 / F≤3.9, wherein F7 is the focal length of the seventh lens, and F is the total effective focal length of the optical lens. More specifically, F7 and F can further satisfy: 1.5≤F7 / F≤3.9. Satisfying F7 / F≤3.9 controls the focal length of the seventh lens within a certain range, which is conducive to realizing the rapid focusing of light rays to the imaging surface, avoiding the upward trend of light rays, is conducive to reducing the rear aperture, and is also conducive to light collection and ensuring the light quantity.

[0123] In the example embodiments, the optical lens according to the present application can satisfy: 0.15≤d3 / d4≤0.75, where d3 is the center thickness of the second lens, and d4 is the air gap between the second lens and the third lens. More specifically, d3 and d4 can further satisfy: 0.25≤d3 / d4≤0.65. Satisfying 0.15≤d3 / d4≤0.75, the center thickness of the second lens and the air gap between the second lens and the third lens are reasonably controlled, which is beneficial to small light deflection change of the overall optical lens at high and low temperatures and good temperature performance.

[0124] In the example embodiments, the optical lens according to the present application can satisfy: 3≤r5 / F≤10, where r5 is the curvature radius of the first side surface of the third lens, and F is the total effective focal length of the optical lens. More specifically, r5 and F can further satisfy: 4≤r5 / F≤9.5. Satisfying 3≤r5 / F≤10, the first side surface of the third lens is convex, and the curvature radius is controlled within a certain range, so that the light emitted by the second lens almost vertically enters the first side surface of the third lens, the light is excessively flat, which is beneficial to reduce the light energy loss, and the light enters the rear lens flatly, which is beneficial to realize high resolution.

[0125] In the example embodiments, the optical lens according to the present application can satisfy: 0.01≤(d8+d9) / TTL≤0.1, where d8 is the interval between the fourth lens and the diaphragm, and d9 is the interval between the diaphragm and the fifth lens. More specifically, d8 and d9 can further satisfy: 0.018≤(d8+d9) / TTL≤0.08. Satisfying 0.01≤(d8+d9) / TTL≤0.1, the distance between the front and rear lenses of the diaphragm is close and controlled within a certain range, which is beneficial to the first side surface of the fifth lens to converge the light, so that the light entering the optical system is effectively collected, the rear aperture is reduced, and miniaturization is realized.

[0126] In the example embodiments, the optical lens according to the present application can satisfy: 0.01≤(d1+d3) / TTL≤0.3, where d1 is the center thickness of the first lens, d3 is the center thickness of the second lens, and TTL is the total optical length of the optical lens. More specifically, d1, d3 and TTL can further satisfy: 0.05≤(d1+d3) / TTL≤0.2. Satisfying 0.01≤(d1+d3) / TTL≤0.3, the first lens and the third lens are glass lenses, which account for a large proportion in the weight of the entire optical lens, and the center thickness of the first lens and the second lens is reasonably set, which is beneficial to centering the gravity of the entire system and realizing compact structure and miniaturization.

[0127] In the example embodiments, the optical lens according to the present application can satisfy: and wherein, is the sag of the first side surface of the second lens when the aperture of the first side surface is is the sag of the first side surface of the second lens when the aperture of the first side surface is More specifically, and Further, it can be satisfied that: and satisfies and When the first side surface of the second lens has a large reverse curvature, the optical path of the edge light can be quickly accumulated to reduce the optical path difference between the edge light and the center light, which is beneficial to correcting the edge field aberration and achieving high resolution, and also beneficial to obtaining a large field of view under the same chip size.

[0128] In the exemplary embodiments, the optical lens according to the present application can further include a filter and / or a protective glass arranged between the seventh lens and the imaging surface, according to the needs, to filter light with different wavelengths and prevent damage to the image-side element (e.g., a chip) of the optical lens.

[0129] In the exemplary embodiments, the first lens to the seventh lens can be a spherical lens or an aspherical lens. The present application does not specifically limit the specific number of spherical lenses and aspherical lenses. When the imaging quality is emphasized, the number of aspherical lenses can be increased, and even all lenses can use aspherical lenses. In particular, in order to improve the resolution quality of the optical system, the second lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens can all be aspherical lenses. The aspherical lens has the characteristic that the curvature continuously changes from the center of the lens to the periphery. Unlike the spherical lens which has a constant curvature from the center of the lens to the periphery, the aspherical lens has better curvature radius characteristics, and has the advantages of improving distortion aberration and improving astigmatism aberration. After using the aspherical lens, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality of the lens. The arrangement of the aspherical lens helps to correct the system aberration and improve the resolution.

[0130] ​The optical lens according to the above-mentioned embodiments of the present application achieves at least one of the following beneficial effects, such as miniaturization, small aperture, high resolution, long back focal length, large field of view, weak ghost image, good temperature performance, low assembly sensitivity, and good imaging quality, by reasonable setting of the shapes and optical powers of the lenses, under the condition that only 7 lenses are used. The fifth lens and the sixth lens of the optical lens are cemented lenses, which is beneficial to reducing the air gap between the two lenses, making the overall optical system compact, reducing the process, reducing the cost, reducing the tolerance sensitivity problem of the lens unit due to the tilt / offset generated in the assembly process, and reducing the light loss caused by the reflection between the lenses, improving the illumination, and correcting the chromatic aberration. In addition, a part of the chromatic aberration can be left to balance the chromatic aberration of the system. Under the premise of compact structure, the fifth lens and the sixth lens as cemented lenses are beneficial to the improvement of resolution, optimization of distortion, CRA and other optical properties, which can weaken the ghost image to a certain extent; the fifth lens and the sixth lens as cemented lenses can share the overall chromatic aberration correction of the system, effectively correct the aberration, improve the resolution, and make the overall optical system compact, meeting the miniaturization requirement.

[0131] In the example embodiments, the first lens and the third lens can be glass lenses. The optical lens made of glass can suppress the shift of the back focal length of the optical lens with the change of temperature, so as to improve the system stability. At the same time, the use of glass material can avoid the imaging blur of the lens caused by the high and low temperature changes in the use environment, which affects the normal use of the lens. For example, the optical lens with all-glass design has a wide temperature range, and can maintain stable optical performance in the range of -40℃ to 105℃. Specifically, when the resolution quality and reliability are focused on, the first lens to the seventh lens can all be glass aspherical lenses. Of course, in the application occasion with low temperature stability requirement, the first lens to the seventh lens of the optical lens can also be made of plastic. The optical lens made of plastic can effectively reduce the manufacturing cost. Of course, the first lens to the seventh lens of the optical lens can also be made of plastic and glass.

[0132] However, those skilled in the art should understand that the number of lenses constituting the lens can be changed without departing from the technical solution claimed by the present application, so as to obtain the various results and advantages described in the present specification. For example, although the seven lenses are described as an example in the embodiments, the optical lens is not limited to including seven lenses. If necessary, the optical lens can also include other number of lenses. The specific embodiments of the optical lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0133] Example 1

[0134] The following refers to Figure 1 The optical lens according to Embodiment 1 of the present application is described. Figure 1A structural diagram of an optical lens according to Embodiment 1 of the present application is shown.

[0135] As shown in Figure 1 the optical lens comprises, in sequence from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.

[0136] The first lens L1 is a convex-concave lens with negative focal power, the first side S1 of which is a convex surface and the second side S2 of which is a concave surface. The second lens L2 is a convex-concave lens with negative focal power, the first side S3 of which is a convex surface and the second side S4 of which is a concave surface. The third lens L3 is a biconvex lens with positive focal power, the first side S5 of which is a convex surface and the second side S6 of which is a convex surface. The fourth lens L4 is a convex-concave lens with positive focal power, the first side S7 of which is a convex surface and the second side S8 of which is a concave surface. The fifth lens L5 is a biconvex lens with positive focal power, the first side S10 of which is a convex surface and the second side S11 of which is a convex surface. The sixth lens L6 is a biconcave lens with negative focal power, the first side S11 of which is a concave surface and the second side S12 of which is a concave surface. The seventh lens L7 is a biconvex lens with positive focal power, the first side S13 of which is a convex surface and the second side S14 of which is a convex surface. The fifth lens L5 and the sixth lens L6 can be cemented to form a cemented lens. The first side of the second lens, the second side of the sixth lens, and the first side of the seventh lens are all reverse curved.

[0137] The optical lens can further comprise a stop STO, which can be arranged between the fourth lens L4 and the fifth lens L5 to improve the imaging quality. For example, the stop STO can be arranged between the fourth lens L4 and the fifth lens L5 at a position close to the first side S10 of the fifth lens L5.

[0138] Alternatively, the optical lens can further comprise a filter L8 with a first side S15 and a second side S16 and / or a protective glass L9 with a first side S17 and a second side S18. The filter L8 and / or the protective glass L9 can be used to correct color deviation, and the filter L8 and / or the protective glass L9 can also be used to protect the image sensor chip IMA located at the imaging surface. Light from an object sequentially passes through the surfaces S1 to S18 and is finally imaged on the imaging surface.

[0139] The optical lens provided in the present application can be used as, for example, a vehicle-mounted lens for imaging, in which case light from an object sequentially passes through each surface S1 to S18 and is finally imaged on an imaging surface provided on the second side, wherein an image sensing chip IMA is provided at the imaging surface. It should be understood that the optical lens provided in the present application can also be used as, for example, a projection lens or a laser radar transmitting end lens, in which case light from an image source surface sequentially passes through each surface S18 to S1 and is finally projected onto a projection surface (not shown) provided on the first side, wherein an image sensing chip IMA is provided at the image source surface.

[0140] Table 1 shows the radius of curvature R, thickness / distance d (it should be understood that the thickness / distance d of the row where S1 is located is the central thickness d1 of the first lens L1, the thickness / distance d of the row where S2 is located is the interval distance d12 between the second side S2 of the first lens L1 and the first side S3 of the second lens L2, and so on), refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 1.

[0141]

[0142]

[0143] Table 1

[0144] In Example 1, the first side S3 and the second side S4 of the second lens L2, the first side S7 and the second side S8 of the fourth lens L4, the first side S10 and the second side S11 of the fifth lens L5, the first side S11 and the second side S12 of the sixth lens L6, and the first side S13 and the second side S14 of the seventh lens L7 can all be aspherical surfaces, and the surface type x of each aspherical surface can be defined using, but not limited to, the following aspherical surface formula:

[0145]

[0146] wherein x is the sag of the aspherical surface at a height h along the optical axis, c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the inverse of the radius of curvature R in Table 1 above), k is the conic coefficient, and Ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below provides the conic coefficient k and the high-order term coefficients A4, A6, A8, A10, A12, A14, and A16 that can be used for each aspherical surface S3, S4, S7, S8, S10-S14 in Example 1.

[0147] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -16.9872 3.0508E-03 -1.8802E-03 3.0181E-04 -2.6525E-05 1.2415E-06 -2.3807E-08 1.5274E-12 S4 -0.7724 -3.7712E-03 -5.5378E-03 -1.8709E-03 1.7983E-03 -5.7567E-04 8.4780E-05 -4.8676E-06 S7 -0.0044 8.5534E-03 3.3006E-04 -9.8422E-06 -6.8731E-05 1.4167E-06 5.1438E-07 1.8412E-07 S8 -0.0896 3.1614E-02 -4.9408E-03 1.0283E-03 -1.2053E-03 -1.0154E-04 6.2607E-05 8.4398E-06 S10 6.5165 8.6984E-03 1.3593E-01 -4.5485E-01 7.9812E-01 -7.6382E-01 3.7785E-01 -7.8234E-02 S11 -0.9709 -4.3721E-01 2.9555E-01 -2.1783E-01 1.4572E-01 -2.4591E-02 -3.0161E-02 1.1246E-02 S12 58.0000 -6.9137E-02 5.4764E-02 -3.0081E-02 1.4520E-02 -4.5648E-03 8.3481E-04 -7.4048E-05 S13 -0.3319 -2.1981E-02 5.1961E-03 -6.3563E-04 -2.5450E-04 1.0173E-04 -1.3394E-05 5.4949E-07 S14 -8.7337 2.0624E-02 -3.1856E-03 -4.1621E-04 3.2253E-04 -1.1711E-04 1.8434E-05 -1.0371E-06

[0148] Table 2

[0149] Example 2

[0150] The following description refers to Figure 2 An optical lens according to Embodiment 2 of the present application is described. In this and the following embodiments, the description similar to Embodiment 1 will be omitted for brevity. Figure 2 A structure schematic diagram of the optical lens according to Embodiment 2 of the present application is shown.

[0151] As shown in Figure 2 the optical lens comprises, in order from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7.

[0152] The first lens L1 is a convex-concave lens with negative focal power, the first side S1 of which is a convex surface and the second side S2 of which is a concave surface. The second lens L2 is a convex-concave lens with negative focal power, the first side S3 of which is a convex surface and the second side S4 of which is a concave surface. The third lens L3 is a double convex lens with positive focal power, the first side S5 of which is a convex surface and the second side S6 of which is a convex surface. The fourth lens L4 is a convex-concave lens with positive focal power, the first side S7 of which is a convex surface and the second side S8 of which is a concave surface. The fifth lens L5 is a double convex lens with positive focal power, the first side S10 of which is a convex surface and the second side S11 of which is a convex surface. The sixth lens L6 is a double concave lens with negative focal power, the first side S11 of which is a concave surface and the second side S12 of which is a concave surface. The seventh lens L7 is a double convex lens with positive focal power, the first side S13 of which is a convex surface and the second side S14 of which is a convex surface. The fifth lens L5 and the sixth lens L6 can be cemented to form a cemented lens. The first side of the second lens, the second side of the sixth lens and the first side of the seventh lens are reverse curved.

[0153] The optical lens can further comprise a stop STO, which can be arranged between the fourth lens L4 and the fifth lens L5 to improve the imaging quality. For example, the stop STO can be arranged at a position between the fourth lens L4 and the fifth lens L5 close to the first side S10 of the fifth lens L5.

[0154] Alternatively, the optical lens can further comprise a filter L8 with a first side S15 and a second side S16 and / or a protective glass L9 with a first side S17 and a second side S18. The filter L8 and / or the protective glass L9 can be used to correct color deviation and / or protect the image sensor chip IMA located at the imaging plane. The light from the object sequentially passes through the surfaces S1 to S18 and is finally imaged on the imaging plane.

[0155] Table 3 shows the radius of curvature R, thickness / distance d, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 2. Table 4 shows the conic coefficient and high-order term coefficient of each aspherical surface of Example 2, wherein each aspherical surface can be defined by the formula (1) given in Example 1 above.

[0156]

[0157]

[0158] Table 3

[0159] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -16.9872 3.0508E-03 -1.8802E-03 3.0181E-04 -2.6525E-05 1.2415E-06 -2.3807E-08 1.5274E-12 S4 -0.7724 -3.7712E-03 -5.5378E-03 -1.8709E-03 1.7983E-03 -5.7567E-04 8.4780E-05 -4.8676E-06 S7 -0.0044 8.5534E-03 3.3006E-04 -9.8422E-06 -6.8731E-05 1.4167E-06 5.1438E-07 1.8412E-07 S8 -0.0896 3.1614E-02 -4.9408E-03 1.0283E-03 -1.2053E-03 -1.0154E-04 6.2607E-05 8.4398E-06 S10 6.5165 8.6984E-03 1.3593E-01 -4.5485E-01 7.9812E-01 -7.6382E-01 3.7785E-01 -7.8234E-02 S11 -0.9709 -4.3721E-01 2.9555E-01 -2.1783E-01 1.4572E-01 -2.4591E-02 -3.0161E-02 1.1246E-02 S12 58.0000 -6.9137E-02 5.4764E-02 -3.0081E-02 1.4520E-02 -4.5648E-03 8.3481E-04 -7.4048E-05 S13 -0.3319 -2.1981E-02 5.1961E-03 -6.3563E-04 -2.5450E-04 1.0173E-04 -1.3394E-05 5.4949E-07 S14 -8.7337 2.0624E-02 -3.1856E-03 -4.1621E-04 3.2253E-04 -1.1711E-04 1.8434E-05 -1.0371E-06

[0160] Table 4

[0161] Example 3

[0162] The following refers to Figure 3 An optical lens according to Example 3 of the present application is described. Figure 3 A structural schematic diagram of the optical lens according to Example 3 of the present application is shown.

[0163] As shown in Figure 3 The optical lens comprises, in order from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.

[0164] The first lens L1 is a convex-concave lens with negative optical power, the first side S1 of which is a convex surface and the second side S2 of which is a concave surface. The second lens L2 is a convex-concave lens with negative optical power, the first side S3 of which is a convex surface and the second side S4 of which is a concave surface. The third lens L3 is a biconvex lens with positive optical power, the first side S5 of which is a convex surface and the second side S6 of which is a convex surface. The fourth lens L4 is a convex-concave lens with positive optical power, the first side S7 of which is a convex surface and the second side S8 of which is a concave surface. The fifth lens L5 is a biconvex lens with positive optical power, the first side S10 of which is a convex surface and the second side S11 of which is a convex surface. The sixth lens L6 is a convex-concave lens with negative optical power, the first side S11 of which is a concave surface and the second side S12 of which is a convex surface. The seventh lens L7 is a biconvex lens with positive optical power, the first side S13 of which is a convex surface and the second side S14 of which is a convex surface. The fifth lens L5 and the sixth lens L6 can be cemented to form a cemented lens. The first side of the second lens, the second side of the sixth lens, and the first side of the seventh lens are reverse curved.

[0165] The optical lens can further include a stop STO, which can be disposed between the fourth lens L4 and the fifth lens L5 to improve the imaging quality. For example, the stop STO can be disposed between the fourth lens L4 and the fifth lens L5 at a position close to the first side S10 of the fifth lens L5.

[0166] Optionally, the optical lens can further include a filter L8 having a first side S15 and a second side S16 and / or a protective glass L9 having a first side S17 and a second side S18. The filter L8 and / or the protective glass L9 can be used to correct color deviation and / or protect the image sensor chip IMA located at the imaging plane. Light from the object sequentially passes through each surface S1 to S18 and is finally imaged on the imaging plane.

[0167] Table 5 shows the radius of curvature R, the thickness / distance d, the refractive index Nd, and the Abbe number Vd of each lens of the optical lens of Example 3. Table 6 shows the conic coefficient and the high-order term coefficient that can be used for each aspherical surface of Example 3, wherein each aspherical surface profile can be defined by the formula (1) given in Example 1 above.

[0168]

[0169] Table 5

[0170] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -19.3694 3.0482E-03 -1.8768E-03 3.0196E-04 -2.6535E-05 1.2398E-06 -2.3837E-08 4.5052E-12 S4 -0.7750 -9.4897E-04 -5.3547E-03 -2.1309E-03 1.7982E-03 -5.7580E-04 8.4720E-05 -4.8657E-06 S7 0.9032 1.0407E-02 1.8188E-03 8.8379E-05 -6.0166E-05 -3.3473E-06 2.5582E-07 2.7255E-06 S8 -9.5310 4.2524E-02 9.8076E-04 3.0402E-03 -2.3194E-03 -1.3618E-03 -1.1926E-04 1.4223E-03 S10 7.2830 1.0480E-02 1.3689E-01 -4.5611E-01 7.9778E-01 -7.6247E-01 3.8201E-01 -8.2568E-02 S11 -1.1766 -4.2958E-01 2.9765E-01 -2.1537E-01 1.5028E-01 -2.1257E-02 -3.1564E-02 1.0083E-02 S12 -101.1133 -6.5897E-02 5.5798E-02 -2.9955E-02 1.4512E-02 -4.5773E-03 8.4824E-04 -6.6266E-05 S13 -0.1253 -2.2465E-02 5.1866E-03 -6.7231E-04 -2.5922E-04 1.0158E-04 -1.3380E-05 5.5234E-07 S14 -16.3633 2.1533E-02 -2.0511E-03 -3.1502E-04 3.2769E-04 -1.1680E-04 1.8410E-05 -1.0587E-06

[0171] Table 6

[0172] Example 4

[0173] The following refers to Figure 4 An optical lens according to Example 4 of the present application is described. Figure 4 A structural schematic diagram of the optical lens according to Example 4 of the present application is shown.

[0174] As Figure 4 shown, the optical lens sequentially includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7 along the optical axis from the first side to the second side.

[0175] The first lens L1 is a convex-concave lens with negative focal power, the first side surface S1 is a convex surface, and the second side surface S2 is a concave surface. The second lens L2 is a convex-concave lens with negative focal power, the first side surface S3 is a convex surface, and the second side surface S4 is a concave surface. The third lens L3 is a biconvex lens with positive focal power, the first side surface S5 is a convex surface, and the second side surface S6 is a convex surface. The fourth lens L4 is a convex-concave lens with positive focal power, the first side surface S7 is a convex surface, and the second side surface S8 is a concave surface. The fifth lens L5 is a biconvex lens with positive focal power, the first side surface S10 is a convex surface, and the second side surface S11 is a convex surface. The sixth lens L6 is a convex-concave lens with negative focal power, the first side surface S11 is a concave surface, and the second side surface S12 is a convex surface. The seventh lens L7 is a biconvex lens with positive focal power, the first side surface S13 is a convex surface, and the second side surface S14 is a convex surface. The fifth lens L5 and the sixth lens L6 can be glued to form a glued lens. The first side surface of the second lens, the second side surface of the sixth lens, and the first side surface of the seventh lens are reverse curved.

[0176] The optical lens can further include a stop STO, which can be disposed between the fourth lens L4 and the fifth lens L5 to improve the imaging quality. For example, the stop STO can be disposed between the fourth lens L4 and the fifth lens L5 at a position close to the first side surface S10 of the fifth lens L5.

[0177] Optionally, the optical lens can further include a filter L8 having a first side surface S15 and a second side surface S16 and / or a protective glass L9 having a first side surface S17 and a second side surface S18. The filter L8 and / or the protective glass L9 can be used to correct color deviation and / or protect the image sensor chip IMA located at the imaging surface. Light from the object sequentially passes through the surfaces S1 to S18 and is finally imaged on the imaging surface.

[0178] Table 7 shows the radius of curvature R, the thickness / distance d, the refractive index Nd, and the Abbe number Vd of each lens of the optical lens of Example 4. Table 8 shows the conic coefficient and the high-order term coefficient that can be used for each aspherical surface in Example 4, wherein each aspherical surface profile can be defined by the formula (1) given in Example 1 above.

[0179]

[0180]

[0181] Table 7

[0182] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -19.3694 3.0482E-03 -1.8768E-03 3.0196E-04 -2.6535E-05 1.2398E-06 -2.3837E-08 4.5052E-12 S4 -0.7750 -9.4897E-04 -5.3547E-03 -2.1309E-03 1.7982E-03 -5.7580E-04 8.4720E-05 -4.8657E-06 S7 0.9032 1.0407E-02 1.8188E-03 8.8379E-05 -6.0166E-05 -3.3473E-06 2.5582E-07 2.7255E-06 S8 -9.5310 4.2524E-02 9.8076E-04 3.0402E-03 -2.3194E-03 -1.3618E-03 -1.1926E-04 2.1335E-03 S10 7.2830 1.0480E-02 1.3689E-01 -4.5611E-01 7.9778E-01 -7.6247E-01 3.8201E-01 -8.2568E-02 S11 -1.1766 -4.2958E-01 2.9765E-01 -2.1537E-01 1.5028E-01 -2.1257E-02 -3.1564E-02 1.0083E-02 S12 -101.1133 -6.5897E-02 5.5798E-02 -2.9955E-02 1.4512E-02 -4.5773E-03 8.4824E-04 -6.6266E-05 S13 -0.1253 -2.2465E-02 5.1866E-03 -6.7231E-04 -2.5922E-04 1.0158E-04 -1.3380E-05 5.5234E-07 S14 -16.3633 2.1533E-02 -2.0511E-03 -3.1502E-04 3.2769E-04 -1.1680E-04 1.8410E-05 -1.0587E-06

[0183] Table 8

[0184] Example 5

[0185] The following description is made with reference to the drawings, in which Figure 5 An optical lens according to Embodiment 5 of the present application is described. Figure 5 A structural schematic diagram of the optical lens according to Embodiment 5 of the present application is shown.

[0186] As shown in Figure 5 the optical lens comprises, in order from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.

[0187] The first lens L1 is a convex-concave lens with negative focal power, the first side S1 of which is convex, and the second side S2 of which is concave. The second lens L2 is a double-concave lens with negative focal power, the first side S3 of which is concave, and the second side S4 of which is concave. The third lens L3 is a double-convex lens with positive focal power, the first side S5 of which is convex, and the second side S6 of which is convex. The fourth lens L4 is a double-convex lens with positive focal power, the first side S7 of which is convex, and the second side S8 of which is convex. The fifth lens L5 is a double-convex lens with positive focal power, the first side S10 of which is convex, and the second side S11 of which is convex. The sixth lens L6 is a double-concave lens with negative focal power, the first side S11 of which is concave, and the second side S12 of which is concave. The seventh lens L7 is a double-convex lens with positive focal power, the first side S13 of which is convex, and the second side S14 of which is convex. The fifth lens L5 and the sixth lens L6 can be cemented to form a cemented lens. The second side of the sixth lens and the second side of the seventh lens are both reverse curved.

[0188] The optical lens can further comprise a stop STO, which can be arranged between the fourth lens L4 and the fifth lens L5 to improve the imaging quality. For example, the stop STO can be arranged between the fourth lens L4 and the fifth lens L5 at a position close to the first side S10 of the fifth lens L5.

[0189] Optionally, the optical lens can further comprise a filter L8 with a first side S15 and a second side S16 and / or a protective glass L9 with a first side S17 and a second side S18. The filter L8 and / or the protective glass L9 can be used to correct color deviation and / or protect the image sensor chip IMA located at the imaging plane. Light from the object passes through the surfaces S1 to S18 in order and is finally imaged on the imaging plane.

[0190] Table 9 shows the radius of curvature R, the thickness / distance d, the refractive index Nd, and the Abbe number Vd of each lens of the optical lens of Embodiment 5. Table 10 shows the conic coefficient and the high-order term coefficient that can be used for each aspherical surface in Embodiment 5, wherein each aspherical surface can be defined by the formula (1) given in Embodiment 1 above.

[0191]

[0192] Table 9

[0193] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -102.7808 7.8396E-03 -2.9591E-03 4.6168E-04 -4.1837E-05 2.0762E-06 -4.2771E-08 0.0000E+00 S4 -0.7636 8.8772E-03 -6.2896E-03 -2.2176E-03 1.8091E-03 -5.7198E-04 8.5204E-05 -4.8827E-06 S7 -0.2763 4.5673E-03 1.1739E-03 -1.2607E-04 -7.5420E-05 -9.5506E-05 1.7388E-05 0.0000E+00 S8 -0.1239 1.6513E-02 -1.6577E-03 -2.0213E-03 -4.4666E-04 1.5006E-04 5.2984E-05 0.0000E+00 S10 47.4121 -1.8544E-03 1.1817E-01 -4.6090E-01 8.0310E-01 -7.5125E-01 3.4656E-01 -5.4538E-02 S11 -0.6821 -4.5076E-01 4.2321E-01 -2.5318E-01 1.0079E-01 -1.9482E-02 3.1000E-03 -1.6079E-03 S12 20.0000 -7.0339E-02 4.9545E-02 -1.9961E-02 5.2925E-03 -4.7719E-04 -1.8859E-05 0.0000E+00 S13 -0.1991 -1.9702E-02 5.1405E-03 -5.8635E-04 -2.2102E-04 1.0148E-04 -1.3310E-05 5.0359E-07 S14 -0.6027 3.5239E-02 -3.3511E-03 -2.9988E-04 3.3551E-04 -1.1643E-04 1.8633E-05 -1.0401E-06

[0194] Table 10

[0195] Example 6

[0196] The following reference Figure 6 An optical lens according to Example 6 of the present application is described. Figure 6 A structural schematic diagram of an optical lens according to Example 6 of the present application is shown.

[0197] like Figure 6 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7.

[0198] The first lens L1 is a convex-concave lens with negative optical power, whose first side surface S1 is convex and whose second side surface S2 is concave. The second lens L2 is a biconcave lens with negative optical power, whose first side surface S3 is concave and whose second side surface S4 is concave. The third lens L3 is a biconvex lens with positive optical power, whose first side surface S5 is convex and whose second side surface S6 is convex. The fourth lens L4 is a biconvex lens with positive optical power, whose first side surface S7 is convex and whose second side surface S8 is convex. The fifth lens L5 is a biconvex lens with positive optical power, whose first side surface S10 is convex and whose second side surface S11 is convex. The sixth lens L6 is a biconcave lens with negative optical power, whose first side surface S11 is concave and whose second side surface S12 is concave. The seventh lens L7 is a biconvex lens with positive optical power, whose first side surface S13 is convex and whose second side surface S14 is convex. The fifth lens L5 and the sixth lens L6 may be cemented together to form a cemented lens. The second side surface of the sixth lens and the second side surface of the seventh lens are recurved.

[0199] The optical lens may further include a stop STO, which may be disposed between the fourth lens element L4 and the fifth lens element L5 to improve imaging quality. For example, the stop STO may be disposed between the fourth lens element L4 and the fifth lens element L5 at a position close to the first side surface S10 of the fifth lens element L5.

[0200] Optionally, the optical lens may further include a filter L8 having a first side surface S15 and a second side surface S16 and / or a protective glass L9 having a first side surface S17 and a second side surface S18. The filter L8 and / or protective glass L9 may be used to correct color deviation and / or protect the image sensor chip IMA located at the imaging surface. Light from an object sequentially passes through each surface S1 to S18 and is ultimately imaged on the imaging surface.

[0201] Table 11 shows the radius of curvature R, thickness / distance d, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 6. Table 12 shows the conic coefficient and higher order coefficients of each aspherical surface of Example 6, wherein each aspherical surface can be defined by the formula (1) given in Example 1 above.

[0202]

[0203]

[0204] Table 11

[0205] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -102.7808 7.8396E-03 -2.9591E-03 4.6168E-04 -4.1837E-05 2.0762E-06 -4.2771E-08 0.0000E+00 S4 -0.7636 8.8772E-03 -6.2896E-03 -2.2176E-03 1.8091E-03 -5.7198E-04 8.5204E-05 -4.8827E-06 S7 -0.2763 4.5673E-03 1.1739E-03 -1.2607E-04 -7.5420E-05 -9.5506E-05 1.7388E-05 0.0000E+00 S8 -0.1239 1.6513E-02 -1.6577E-03 -2.0213E-03 -4.4666E-04 1.5006E-04 5.2984E-05 0.0000E+00 S10 47.4121 -1.8544E-03 1.1817E-01 -4.6090E-01 8.0310E-01 -7.5125E-01 3.4656E-01 -5.4538E-02 S11 -0.6821 -4.5076E-01 4.2321E-01 -2.5318E-01 1.0079E-01 -1.9482E-02 3.1000E-03 -1.6079E-03 S12 20.0000 -7.0339E-02 4.9545E-02 -1.9961E-02 5.2925E-03 -4.7719E-04 -1.8859E-05 0.0000E+00 S13 -0.1991 -1.9702E-02 5.1405E-03 -5.8635E-04 -2.2102E-04 1.0148E-04 -1.3310E-05 5.0359E-07 S14 -0.6027 3.5239E-02 -3.3511E-03 -2.9988E-04 3.3551E-04 -1.1643E-04 1.8633E-05 -1.0401E-06

[0206] Table 12

[0207] Example 7

[0208] The optical lens according to Example 7 of the present application is described below with reference to Figure 7 The structure of the optical lens according to Example 7 of the present application is shown in FIG. 7. Figure 7 The structure of the optical lens according to Example 7 of the present application is shown in FIG. 7.

[0209] As shown in FIG. 7, the optical lens comprises, in order from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. Figure 7 The first lens L1 is a convex-concave lens with negative focal power, the first side S1 of which is convex and the second side S2 of which is concave. The second lens L2 is a convex-concave lens with negative focal power, the first side S3 of which is convex and the second side S4 of which is concave. The third lens L3 is a biconvex lens with positive focal power, the first side S5 of which is convex and the second side S6 of which is convex. The fourth lens L4 is a biconvex lens with positive focal power, the first side S7 of which is convex and the second side S8 of which is convex. The fifth lens L5 is a biconvex lens with positive focal power, the first side S10 of which is convex and the second side S11 of which is convex. The sixth lens L6 is a biconcave lens with negative focal power, the first side S11 of which is concave and the second side S12 of which is concave. The seventh lens L7 is a biconvex lens with positive focal power, the first side S13 of which is convex and the second side S14 of which is convex. The fifth lens L5 and the sixth lens L6 can be cemented to form a cemented lens. The first side of the second lens, the second side of the sixth lens, and the first side of the seventh lens are inflected.

[0210]

[0211] ​The optical lens can further include a stop STO, which can be disposed between the fourth lens L4 and the fifth lens L5 to improve the imaging quality. For example, the stop STO can be disposed between the fourth lens L4 and the fifth lens L5 at a position close to the first side S10 of the fifth lens L5.

[0212] Optionally, the optical lens can further include a filter L8 having a first side S15 and a second side S16 and / or a protective glass L9 having a first side S17 and a second side S18. The filter L8 and / or the protective glass L9 can be used to correct color deviation and / or protect the image sensor chip IMA located at the imaging plane. Light from the object sequentially passes through each surface S1 to S18 and is finally imaged on the imaging plane.

[0213] Table 13 shows the radius of curvature R, the thickness / distance d, the refractive index Nd, and the Abbe number Vd of each lens of the optical lens of Example 7. Table 14 shows the conic coefficient and the high-order term coefficient that can be used for each aspherical surface of Example 7, wherein each aspherical surface can be defined by the formula (1) given in Example 1 above.

[0214]

[0215] Table 13

[0216] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -14.1507 7.6858E-03 -2.9786E-03 4.6048E-04 -4.1922E-05 2.0729E-06 -4.2099E-08 0.0000E+00 S4 -0.7727 7.7028E-03 -6.4294E-03 -2.2508E-03 1.8022E-03 -5.7433E-04 8.4794E-05 -4.8638E-06 S7 -0.2561 5.1128E-03 1.0422E-03 -2.3011E-04 6.9336E-06 -3.5349E-07 -9.1240E-07 0.0000E+00 S8 -0.6962 1.5231E-02 -3.1811E-03 2.5473E-04 -6.3877E-05 -3.4103E-05 8.6787E-06 0.0000E+00 S10 12.6162 4.3333E-03 1.3514E-01 -4.5414E-01 7.9822E-01 -7.6522E-01 3.7679E-01 -7.4418E-02 S11 -0.6982 -4.7406E-01 3.1435E-01 -2.4239E-01 1.6508E-01 -2.6263E-02 -3.0247E-02 1.2001E-02 S12 20.0000 -7.8062E-02 4.8834E-02 -2.0004E-02 4.9699E-03 -3.6816E-04 -6.3730E-05 0.0000E+00 S13 -0.3429 -2.0178E-02 4.8029E-03 -7.7585E-04 -2.2767E-04 1.0176E-04 -1.3420E-05 5.4822E-07 S14 -0.2848 3.4370E-02 -3.3795E-03 -3.2018E-04 3.2969E-04 -1.1768E-04 1.8453E-05 -1.0428E-06

[0217] Table 14

[0218] Example 8

[0219] The following refers to Figure 8 An optical lens according to Example 8 of the present application is described. Figure 8 A structural schematic diagram of the optical lens according to Example 8 of the present application is shown.

[0220] As Figure 8 shown, the optical lens sequentially includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7 along the optical axis from the first side to the second side.

[0221] The first lens L1 is a convex-concave lens with negative focal power, the first side S1 is convex, and the second side S2 is concave. The second lens L2 is a convex-concave lens with negative focal power, the first side S3 is convex, and the second side S4 is concave. The third lens L3 is a biconvex lens with positive focal power, the first side S5 is convex, and the second side S6 is convex. The fourth lens L4 is a biconvex lens with positive focal power, the first side S7 is convex, and the second side S8 is convex. The fifth lens L5 is a biconvex lens with positive focal power, the first side S10 is convex, and the second side S11 is convex. The sixth lens L6 is a biconcave lens with negative focal power, the first side S11 is concave, and the second side S12 is concave. The seventh lens L7 is a biconvex lens with positive focal power, the first side S13 is convex, and the second side S14 is convex. The fifth lens L5 and the sixth lens L6 can be glued to form a glued lens. The first side of the second lens, the second side of the sixth lens, and the first side of the seventh lens are reverse curved.

[0222] The optical lens can further include a stop STO, which can be disposed between the fourth lens L4 and the fifth lens L5 to improve the imaging quality. For example, the stop STO can be disposed between the fourth lens L4 and the fifth lens L5 at a position close to the first side S10 of the fifth lens L5.

[0223] Optionally, the optical lens can further include a filter L8 having a first side S15 and a second side S16 and / or a protective glass L9 having a first side S17 and a second side S18. The filter L8 and / or the protective glass L9 can be used to correct color deviation and / or protect the image sensor chip IMA located at the imaging surface. Light from the object sequentially passes through each surface S1 to S18 and is finally imaged on the imaging surface.

[0224] Table 15 shows the radius of curvature R, thickness / distance d, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 8. Table 16 shows the conic coefficient and high-order term coefficient that can be used for each aspherical surface in Example 8, wherein each aspherical surface profile can be defined by the formula (1) given in Example 1 above.

[0225]

[0226]

[0227] Table 15

[0228] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -14.1507 7.6858E-03 -2.9786E-03 4.6048E-04 -4.1922E-05 2.0729E-06 -4.2099E-08 0.0000E+00 S4 -0.7727 7.7028E-03 -6.4294E-03 -2.2508E-03 1.8022E-03 -5.7433E-04 8.4794E-05 -4.8638E-06 S7 -0.2561 5.1128E-03 1.0422E-03 -2.3011E-04 6.9336E-06 -3.5349E-07 -9.1240E-07 0.0000E+00 S8 -0.6962 1.5231E-02 -3.1811E-03 2.5473E-04 -6.3877E-05 -3.4103E-05 8.6787E-06 0.0000E+00 S10 12.6162 4.3333E-03 1.3514E-01 -4.5414E-01 7.9822E-01 -7.6522E-01 3.7679E-01 -7.4418E-02 S11 -0.6982 -4.7406E-01 3.1435E-01 -2.4239E-01 1.6508E-01 -2.6263E-02 -3.0247E-02 1.2001E-02 S12 20.0000 -7.8062E-02 4.8834E-02 -2.0004E-02 4.9699E-03 -3.6816E-04 -6.3730E-05 0.0000E+00 S13 -0.3429 -2.0178E-02 4.8029E-03 -7.7585E-04 -2.2767E-04 1.0176E-04 -1.3420E-05 5.4822E-07 S14 -0.2848 3.4370E-02 -3.3795E-03 -3.2018E-04 3.2969E-04 -1.1768E-04 1.8453E-05 -1.0428E-06

[0229] Table 16

[0230] Example 9

[0231] The following refers to Figure 9 An optical lens according to Embodiment 9 of the present application is described. Figure 9 A structural schematic diagram of the optical lens according to Embodiment 9 of the present application is shown.

[0232] As shown in Figure 9 The optical lens sequentially includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7 along the optical axis from the first side to the second side.

[0233] The first lens L1 is a convex-concave lens with negative focal power, the first side S1 is a convex surface, and the second side S2 is a concave surface. The second lens L2 is a convex-concave lens with negative focal power, the first side S3 is a convex surface, and the second side S4 is a concave surface. The third lens L3 is a double convex lens with positive focal power, the first side S5 is a convex surface, and the second side S6 is a convex surface. The fourth lens L4 is a double convex lens with positive focal power, the first side S7 is a convex surface, and the second side S8 is a convex surface. The fifth lens L5 is a double convex lens with positive focal power, the first side S10 is a convex surface, and the second side S11 is a convex surface. The sixth lens L6 is a convex-concave lens with negative focal power, the first side S11 is a concave surface, and the second side S12 is a convex surface. The seventh lens L7 is a double convex lens with positive focal power, the first side S13 is a convex surface, and the second side S14 is a convex surface. The fifth lens L5 and the sixth lens L6 can be glued to form a glued lens. The first side of the second lens, the second side of the sixth lens, and the first side of the seventh lens have reverse curvature.

[0234] The optical lens can further include a stop STO, which can be disposed between the fourth lens L4 and the fifth lens L5 to improve the imaging quality. For example, the stop STO can be disposed between the fourth lens L4 and the fifth lens L5 at a position close to the first side S10 of the fifth lens L5.

[0235] Optionally, the optical lens can further include a filter L8 having a first side S15 and a second side S16 and / or a protective glass L9 having a first side S17 and a second side S18. The filter L8 and / or the protective glass L9 can be used to correct color deviation and / or protect the image sensor chip IMA located at the imaging surface. The light from the object sequentially passes through each surface S1 to S18 and is finally imaged on the imaging surface.

[0236] Table 17 shows the radius of curvature R, the thickness / distance d, the refractive index Nd, and the Abbe number Vd of each lens of the optical lens of Embodiment 9. Table 18 shows the conic coefficient and the high-order term coefficient that can be used for each aspherical surface in Embodiment 9, wherein each aspherical surface can be defined by the formula (1) given in Embodiment 1 above.

[0237]

[0238] Table 17

[0239] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -14.9229 7.6184E-03 -2.9843E-03 4.6019E-04 -4.1915E-05 2.0751E-06 -4.2182E-08 0.0000E+00 S4 -0.7737 8.2955E-03 -6.4791E-03 -2.2627E-03 1.8000E-03 -5.7403E-04 8.4881E-05 -4.8826E-06 S7 1.9095 9.1932E-03 8.9338E-04 5.0461E-04 1.9331E-04 -1.8694E-04 3.9850E-05 0.0000E+00 S8 -42.3450 2.5246E-02 5.9091E-04 6.3463E-03 -8.4924E-03 5.1074E-03 -8.4722E-04 0.0000E+00 S10 31.9459 -9.7484E-03 2.2898E-01 -5.8925E-01 7.6876E-01 -5.1308E-01 1.9297E-01 -5.6019E-02 S11 -1.4065 -4.7369E-01 3.2824E-01 -2.5125E-01 1.8123E-01 -3.2934E-02 -6.4059E-02 3.2900E-02 S12 20.0000 -7.1035E-02 4.8474E-02 -1.9224E-02 5.1537E-03 -9.9087E-04 1.1776E-04 0.0000E+00 S13 0.1110 -1.9184E-02 5.1135E-03 -9.0207E-04 -2.9656E-04 9.3742E-05 -1.0863E-05 4.9286E-07 S14 0.0348 -3.6076E-03 -3.3987E-04 3.2781E-04 -1.1810E-04 1.8374E-05 -1.0370E-06 -1.0428E-06

[0240] Table 18

[0241] Example 10

[0242] The optical lens according to Embodiment 10 of the present application is described below. Figure 10 A structure diagram of the optical lens according to Embodiment 10 of the present application is shown. Figure 10 A structure diagram of the optical lens according to Embodiment 10 of the present application is shown.

[0243] As shown in Figure 10 The optical lens comprises, in sequence from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.

[0244] The first lens L1 is a convex-concave lens with negative focal power, the first side S1 is a convex surface, and the second side S2 is a concave surface. The second lens L2 is a convex-concave lens with negative focal power, the first side S3 is a convex surface, and the second side S4 is a concave surface. The third lens L3 is a double-convex lens with positive focal power, the first side S5 is a convex surface, and the second side S6 is a convex surface. The fourth lens L4 is a double-convex lens with positive focal power, the first side S7 is a convex surface, and the second side S8 is a convex surface. The fifth lens L5 is a double-convex lens with positive focal power, the first side S10 is a convex surface, and the second side S11 is a convex surface. The sixth lens L6 is a convex-concave lens with negative focal power, the first side S11 is a concave surface, and the second side S12 is a convex surface. The seventh lens L7 is a double-convex lens with positive focal power, the first side S13 is a convex surface, and the second side S14 is a convex surface. The fifth lens L5 and the sixth lens L6 can be glued to form a glued lens. The first side of the second lens, the second side of the sixth lens, and the first side of the seventh lens are reverse curved.

[0245] The optical lens can further comprise a stop STO, which can be arranged between the fourth lens L4 and the fifth lens L5 to improve the imaging quality. For example, the stop STO can be arranged between the fourth lens L4 and the fifth lens L5 at a position close to the first side S10 of the fifth lens L5.

[0246] Optionally, the optical lens may further include a filter L8 having a first side surface S15 and a second side surface S16 and / or a protective glass L9 having a first side surface S17 and a second side surface S18. The filter L8 and / or protective glass L9 may be used to correct color deviation and / or protect the image sensor chip IMA located at the imaging surface. Light from an object sequentially passes through each surface S1 to S18 and is ultimately imaged on the imaging surface.

[0247] Table 19 shows the radius of curvature R, thickness / distance d, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 10. Table 20 shows the conic coefficient and high-order coefficient of each aspheric mirror surface that can be used in Example 10, wherein the surface shape of each aspheric surface can be defined by formula (1) given in Example 1 above.

[0248]

[0249]

[0250] Table 19

[0251] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -14.9229 7.6184E-03 -2.9843E-03 4.6019E-04 -4.1915E-05 2.0751E-06 -4.2182E-08 0.0000E+00 S4 -0.7737 8.2955E-03 -6.4791E-03 -2.2627E-03 1.8000E-03 -5.7403E-04 8.4881E-05 -4.8826E-06 S7 1.9095 9.1932E-03 8.9338E-04 5.0461E-04 1.9331E-04 -1.8694E-04 3.9850E-05 0.0000E+00 S8 -42.3450 2.5246E-02 5.9091E-04 6.3463E-03 -8.4924E-03 5.1074E-03 -8.4722E-04 0.0000E+00 S10 31.9459 -9.7484E-03 2.2898E-01 -5.8925E-01 7.6876E-01 -5.1308E-01 1.9297E-01 -5.6019E-02 S11 -1.4065 -4.7369E-01 3.2824E-01 -2.5125E-01 1.8123E-01 -3.2934E-02 -6.4059E-02 3.2900E-02 S12 20.0000 -7.1035E-02 4.8474E-02 -1.9224E-02 5.1537E-03 -9.9087E-04 1.1776E-04 0.0000E+00 S13 0.1110 -1.9184E-02 5.1135E-03 -9.0207E-04 -2.9656E-04 9.3742E-05 -1.0863E-05 4.9286E-07 S14 0.0348 -3.6076E-03 -3.3987E-04 3.2781E-04 -1.1810E-04 1.8374E-05 -1.0370E-06 -1.0428E-06

[0252] Table 20

[0253] Example 11

[0254] The following reference Figure 11 An optical lens according to Example 11 of the present application is described. Figure 11 A structural schematic diagram of an optical lens according to Example 11 of the present application is shown.

[0255] like Figure 11 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7.

[0256] The first lens L1 is a convex-concave lens with negative focal power, the first side S1 is a convex surface, and the second side S2 is a concave surface. The second lens L2 is a convex-concave lens with negative focal power, the first side S3 is a convex surface, and the second side S4 is a concave surface. The third lens L3 is a biconvex lens with positive focal power, the first side S5 is a convex surface, and the second side S6 is a convex surface. The fourth lens L4 is a biconvex lens with positive focal power, the first side S7 is a convex surface, and the second side S8 is a convex surface. The fifth lens L5 is a biconcave lens with negative focal power, the first side S10 is a concave surface, and the second side S11 is a concave surface. The sixth lens L6 is a biconvex lens with positive focal power, the first side S11 is a convex surface, and the second side S12 is a convex surface. The seventh lens L7 is a biconvex lens with positive focal power, the first side S13 is a convex surface, and the second side S14 is a convex surface. The fifth lens L5 and the sixth lens L6 can be glued to form a glued lens. The first side of the second lens, the second side of the sixth lens, and the first side of the seventh lens are reverse curved.

[0257] The optical lens can further include a stop STO, which can be disposed between the fourth lens L4 and the fifth lens L5 to improve the imaging quality. For example, the stop STO can be disposed between the fourth lens L4 and the fifth lens L5 at a position close to the first side S10 of the fifth lens L5.

[0258] Alternatively, the optical lens can further include a filter L8 with a first side S15 and a second side S16 and / or a protective glass L9 with a first side S17 and a second side S18. The filter L8 and / or the protective glass L9 can be used to correct color deviation and / or protect the image sensor chip IMA located at the imaging surface. Light from the object sequentially passes through the surfaces S1 to S18 and is finally imaged on the imaging surface.

[0259] Table 21 shows the radius of curvature R, the thickness / distance d, the refractive index Nd, and the Abbe number Vd of each lens of the optical lens of embodiment 11. Table 22 shows the conic coefficient and the high-order term coefficient that can be used for each aspherical surface in embodiment 11, wherein each aspherical surface profile can be defined by the formula (1) given in embodiment 1 above.

[0260]

[0261] Table 21

[0262] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -63.7129 7.3692E-03 -2.9810E-03 4.6202E-04 -4.1811E-05 2.0752E-06 -4.2533E-08 0.0000E+00 S4 -0.7690 9.0274E-03 -6.4070E-03 -2.2917E-03 1.7895E-03 -5.7605E-04 8.4775E-05 -4.7349E-06 S7 0.7738 6.4151E-03 1.8535E-03 -3.6638E-05 3.9025E-05 -5.2678E-06 2.5788E-06 0.0000E+00 S8 3.9381 1.3415E-02 -2.9962E-03 2.0905E-03 5.9399E-03 1.8232E-03 -3.6177E-03 0.0000E+00 S10 200.0124 1.4789E-02 1.0451E-01 -1.3676E+00 -3.6316E+00 -1.6877E+01 6.7212E+01 0.0000E+00 S11 1.7692 1.0140E-02 3.1587E-02 6.7482E-02 6.1517E-02 -1.0144E+00 1.4959E-01 -3.4014E+00 S12 11.2339 -1.7228E-03 -2.1122E-04 -1.1259E-05 1.0374E-04 7.9219E-05 5.7454E-05 4.8928E-05 S13 0.1761 -1.8555E-02 4.5839E-03 -7.2504E-04 -2.4781E-04 9.2074E-05 -1.8300E-05 -1.2818E-06 S14 0.6713 1.0432E-04 6.3328E-05 1.6613E-05 3.7357E-06 7.9762E-07 1.7804E-07 4.5883E-08

[0263] Table 22

[0264] Example 12

[0265] The following refers to Figure 12 An optical lens according to embodiment 12 of the present application is described.Figure 12 A structural diagram of an optical lens according to Embodiment 12 of the present application is shown.

[0266] As shown in Figure 12 the optical lens comprises, in sequence from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7.

[0267] The first lens L1 is a convex-concave lens with negative focal power, the first side S1 of which is convex and the second side S2 of which is concave. The second lens L2 is a convex-concave lens with negative focal power, the first side S3 of which is convex and the second side S4 of which is concave. The third lens L3 is a biconvex lens with positive focal power, the first side S5 of which is convex and the second side S6 of which is convex. The fourth lens L4 is a biconvex lens with positive focal power, the first side S7 of which is convex and the second side S8 of which is convex. The fifth lens L5 is a biconcave lens with negative focal power, the first side S10 of which is concave and the second side S11 of which is concave. The sixth lens L6 is a biconvex lens with positive focal power, the first side S11 of which is convex and the second side S12 of which is convex. The seventh lens L7 is a biconvex lens with positive focal power, the first side S13 of which is convex and the second side S14 of which is convex. The fifth lens L5 and the sixth lens L6 can be cemented to form a cemented lens. The first side of the second lens, the second side of the sixth lens, and the first side of the seventh lens are all reverse curved.

[0268] The optical lens can further comprise a stop STO, which can be arranged between the fourth lens L4 and the fifth lens L5 to improve the imaging quality. For example, the stop STO can be arranged between the fourth lens L4 and the fifth lens L5 at a position close to the first side S10 of the fifth lens L5.

[0269] Alternatively, the optical lens can further comprise a filter L8 with a first side S15 and a second side S16 and / or a protective glass L9 with a first side S17 and a second side S18. The filter L8 and / or the protective glass L9 can be used to correct color deviation and / or protect the image sensor chip IMA located at the imaging plane. Light from the object sequentially passes through the surfaces S1 to S18 and is finally imaged on the imaging plane.

[0270] Table 23 shows the radius of curvature R, the thickness / distance d, the refractive index Nd, and the Abbe number Vd of each lens of the optical lens of Embodiment 12. Table 24 shows the conic coefficient and the high-order term coefficient that can be used for each aspheric surface in Embodiment 12, wherein each aspheric surface can be defined by the formula (1) given in Embodiment 1 above.

[0271]

[0272]

[0273] Table 23

[0274] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -64.8642 7.3771E-03 -2.9809E-03 4.6203E-04 -4.1805E-05 2.0759E-06 -4.2469E-08 0.0000E+00 S4 -0.7693 9.0602E-03 -6.4104E-03 -2.2934E-03 1.7890E-03 -5.7628E-04 8.4731E-05 -4.7417E-06 S7 0.9256 6.5963E-03 1.9900E-03 3.7404E-05 1.8494E-05 3.5473E-05 -2.5594E-04 0.0000E+00 S8 10.5771 1.1111E-02 -7.3102E-03 -4.5269E-03 -1.9181E-03 8.5753E-03 -5.6043E-03 0.0000E+00 S10 200.0148 3.0447E-03 4.7172E-01 -7.1850E-01 -2.9156E+00 -1.9200E+01 3.6507E+01 0.0000E+00 S11 -5.8273 -2.6258E-02 -2.5616E-01 7.7046E-01 -4.3721E-02 -8.4401E-01 -3.5172E-01 -4.3295E+00 S12 10.2678 -6.2695E-04 1.3571E-04 9.9091E-05 1.3093E-04 7.0157E-05 3.4101E-05 3.3467E-05 S13 -2.5069 -1.9780E-02 4.2404E-03 -8.2739E-04 -2.8055E-04 8.2966E-05 -2.0302E-05 -1.6074E-06 S14 0.4621 7.8279E-04 1.8226E-04 3.7022E-05 7.1201E-06 1.2844E-06 2.3481E-07 5.2265E-08

[0275] Table 24

[0276] In summary, Embodiments 1 to 12 respectively satisfy the relationships shown in Table 25-1 and Table 25-2 below. In Table 25-1 and Table 25-2, the units of F, F1, F2, F3, F4, F5, F6, F7, TTL, r7, d7, r8, SAG(11), d11, F56, D, H, SAG(7), D7, d8, d9, d10, r5, d3, d1, d4, BFL, SAG(4), D22, d5, The units of F, F1, F2, F3, F4, F5, F6, F7, TTL, r7, d7, r8, SAG(11), d11, F56, D, H, SAG(7), D7, d8, d9, d10, r5, d3, d1, d4, BFL, SAG(4), D22, d5,

[0277]

[0278]

[0279] Table 25-1

[0280]

[0281]

[0282] Table 25-2

[0283] The present application also provides an electronic device, which can include the optical lens according to the above embodiments of the present application and an imaging element for converting an optical image formed by the optical lens into an electrical signal. The electronic device can be a separate electronic device such as a distance detection camera, or can be an imaging module integrated on a distance detection device such as a distance detection device. In addition, the electronic device can also be a separate imaging device such as a vehicle-mounted camera, or can be an imaging module integrated on an auxiliary driving system.

[0284] The above description is merely preferred embodiments of the present application and a description of the principles of the technology used. It should be understood by those skilled in the art that the scope of the application disclosed in the present application is not limited to the technical solutions formed by the specific combinations of the above technical features, and also covers other technical solutions formed by any combinations of the above technical features or equivalent features without departing from the inventive concept. For example, the above features are replaced with each other to form technical solutions with similar functions disclosed in the present application (but not limited to).

Claims

1. An optical lens, characterized in that: The optical lens comprises, in sequence from the first side to the second side along the optical axis: a first lens having negative optical power, wherein the first side surface is convex and the second side surface is concave; a second lens having negative optical power, wherein the second side surface thereof is concave; a third lens element having positive optical power, wherein the first side surface is convex and the second side surface is convex; a fourth lens element having positive optical power and a convex first side surface; a fifth lens having optical power; a sixth lens having optical power; and a seventh lens element having positive optical power, wherein the first side surface is convex and the second side surface is convex; The fifth lens and the sixth lens are cemented together to form a cemented lens; The focal length F56 of the cemented lens group composed of the fifth lens and the sixth lens and the total effective focal length F of the optical lens satisfy the following: 5≤|F56 / F|≤65; The curvature radius r5 of the first side surface of the third lens and the total effective focal length F of the optical lens satisfy: 3≤r5 / F≤10; The total effective focal length F of the optical lens and the focal length F3 of the third lens satisfy: 4.6490≤F3 / F≤8.

2. The optical lens according to claim 1, wherein: The first side surface of the second lens is a convex surface.

3. The optical lens according to claim 2, wherein: An edge angle θ1 of the first side surface of the second lens at the maximum field angle and a central angle θ2 of the first side surface of the second lens satisfy the following: -50°≤θ1-θ2≤-5°.

4. The optical lens according to claim 2, wherein: The aperture of the first side surface of the second lens is 1 o'clock Yadaka SAG ( 1) The aperture of the first side surface of the second lens is 2 o'clock Yadaka SAG ( 2) Satisfy: |SAG( 1)|=|SAG( 2)| and 0< 2< 1, 3≤ 1≤4.

5.

5. The optical lens according to claim 1, wherein: The first side surface of the second lens is a concave surface.

6. The optical lens according to claim 1, wherein: The second side surface of the fourth lens is a convex surface.

7. The optical lens according to claim 1, wherein: The second side surface of the fourth lens is concave.

8. The optical lens according to claim 1, wherein: The fifth lens has positive optical power, and its first side surface is convex, and its second side surface is convex.

9. The optical lens according to claim 1, wherein: The fifth lens has negative optical power, and its first side surface is concave, and its second side surface is concave.

10. The optical lens according to claim 1, wherein: The sixth lens has negative optical power, and its first side surface is concave, and its second side surface is concave.

11. The optical lens according to claim 1, wherein: The sixth lens has negative optical power, a first side surface of the sixth lens is concave, and a second side surface of the sixth lens is convex.

12. The optical lens according to claim 1, wherein: The sixth lens has positive refractive power, and its first side surface is convex, and its second side surface is convex.

13. The optical lens according to any one of claims 1 to 12, characterized in that: A curvature radius r7 of the first side surface of the fourth lens and a center thickness d7 of the fourth lens satisfy the following: 1.5≤r7 / d7≤3.6351.

14. The optical lens according to any one of claims 1 to 12, characterized in that: The total effective focal length F of the optical lens, the curvature radius r7 of the first side surface of the fourth lens, and the curvature radius r8 of the second side surface of the fourth lens satisfy: 0.3≤|F / r7|+|F / r8|≤0.4973.

15. The optical lens according to any one of claims 1 to 12, characterized in that: The sag height SAG(11) of the bonding surface between the fifth lens and the sixth lens and the center thickness d11 of the sixth lens satisfy the following: -2≤(arctan(SAG(11) / d11)≤0.0422.

16. The optical lens according to any one of claims 1 to 12, wherein: The focal length F56 of the cemented lens group composed of the fifth lens and the sixth lens and the total effective focal length F of the optical lens satisfy the following: 6.5≤|F56 / F|≤60.

17. The optical lens according to any one of claims 1 to 12, wherein: The maximum field of view FOV of the optical lens, the maximum clear aperture D of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens satisfy the following conditions: 2.0417≤D / H / FOV×180°≤5.

4.

18. The optical lens according to any one of claims 1 to 12, wherein: The maximum clear semi-aperture D7 of the first side surface of the fourth lens corresponding to the maximum field of view of the optical lens, the curvature radius r7 of the first side surface of the fourth lens, and the sag height SAG(7) of the first side surface of the fourth lens satisfy the following conditions: 0.1≤arctan(D7 / (r7-SAG(7)))≤0.3797.

19. The optical lens according to any one of claims 1 to 12, characterized in that: The refractive index Nd1 of the first lens satisfies: 1.6≤Nd1≤3.9100.

20. The optical lens according to any one of claims 1 to 12, characterized in that: The total effective focal length F of the optical lens and the focal length F3 of the third lens satisfy: 4.6490≤F3 / F≤6.4385.

21. The optical lens according to any one of claims 1 to 12, wherein: The optical lens also includes an aperture arranged between the fourth lens and the fifth lens. The total optical length TTL of the optical lens, the center thickness d7 of the fourth lens, the spacing distance d8 between the fourth lens and the aperture, the spacing distance d9 between the aperture and the fifth lens, the center thickness d10 of the fifth lens, and the center thickness d11 of the sixth lens satisfy the following: 0.2045≤(d7+d8+d9+d10+d11) / TTL≤0.2601.

22. The optical lens according to any one of claims 1 to 12, characterized in that: The maximum light-transmitting semi-aperture D22 of the second side surface of the second lens corresponding to the maximum field angle of the optical lens and the sag height SAG(4) of the second side surface of the second lens satisfy the following conditions: 0.6≤SAG(4) / D22≤0.9642.

23. The optical lens according to any one of claims 1 to 12, characterized in that: The total optical length TTL of the optical lens and the optical back focus BFL of the optical lens satisfy the following conditions: 0.04≤BFL / TTL≤0.1462.

24. The optical lens according to any one of claims 1 to 12, wherein: A curvature radius r5 of the first side surface of the third lens and a center thickness d5 of the third lens: 1.5≤r5 / d5≤3.6522.

25. The optical lens according to any one of claims 1 to 12, wherein: The focal length F7 of the seventh lens and the total effective focal length F of the optical lens satisfy the following: 2.8166≤F7 / F≤3.

9.

26. The optical lens according to any one of claims 1 to 12, characterized in that: A center thickness d3 of the second lens and an air gap d4 between the second lens and the third lens satisfy the following: 0.25≤d3 / d4≤0.

65.

27. The optical lens according to any one of claims 1 to 12, wherein: The curvature radius r5 of the first side surface of the third lens and the total effective focal length F of the optical lens satisfy: 4≤r5 / F≤9.

5.

28. The optical lens according to any one of claims 1 to 12, wherein: The optical lens further includes an aperture arranged between the fourth lens and the fifth lens, and a distance d8 between the fourth lens and the aperture and a distance d9 between the aperture and the fifth lens satisfy the following conditions: 0.018≤(d8+d9) / TTL≤0.0508.

29. The optical lens according to any one of claims 1 to 12, wherein: The center thickness d1 of the first lens, the center thickness d3 of the second lens, and the total optical length TTL of the optical lens satisfy the following: 0.05≤(d1+d3) / TTL≤0.1247.

30. The optical lens according to claim 3, wherein: An edge angle θ1 of the first side surface of the second lens at the maximum field angle and a central angle θ2 of the first side surface of the second lens satisfy the following: -45°≤θ1-θ2≤-8°.

31. The optical lens according to claim 1, wherein: The optical lens satisfies at least one of the following conditions: -42.3710°≤θ1-θ2≤-9.9980°, 2.9098≤r7 / d7≤3.6351， 0.3648≤|F / r7|+|F / r8|≤0.4973, -1.0602≤(arctan(SAG(11) / d11)≤0.0422, 8.9871≤|F56 / F|≤54.7283, 2.0417≤D / H / FOV×180°≤2.7228, 0.2917≤arctan(D7 / (r7-SAG(7)))≤0.3797, 1.9100≤Nd1≤3.9100, 0.2045≤(d7+d8+d9+d10+d11) / TTL≤0.2601, 0.8062≤SAG(4) / D22≤0.9642, 0.0968≤BFL / TTL≤0.1462, 2.8191≤r5 / d5≤3.6522， 2.8166≤F7 / F≤3.8119, 0.3701≤d3 / d4≤0.5823, 4.5777≤r5 / F≤9.1327， 0.0229≤(d8+d9) / TTL≤0.0508, 0.1085≤(d1+d3) / TTL≤0.1247, in, θ1 is the edge angle of the first side surface of the second lens at the maximum field of view angle, θ2 is the center angle of the first side surface of the second lens, r7 is the curvature radius of the first side surface of the fourth lens, d7 is the center thickness of the fourth lens, F is the total effective focal length of the optical lens, r8 is the curvature radius of the second side surface of the fourth lens, SAG(11) is the sag of the cemented surface between the fifth lens and the sixth lens, d11 is the center thickness of the sixth lens, F56 is the focal length of the cemented lens group composed of the fifth lens and the sixth lens, FOV is the maximum field of view angle of the optical lens, D is the maximum clear aperture of the first side surface of the first lens corresponding to the maximum field of view angle of the optical lens, H is the image height corresponding to the maximum field of view angle of the optical lens, D7 is the maximum clear semi-aperture of the first side surface of the fourth lens corresponding to the maximum field of view angle of the optical lens, SAG(7) is the sag of the first side surface of the fourth lens, Nd1 is the lens refractive index of the first lens, F3 is the focal length of the third lens, TTL is the total optical length of the optical lens, the optical lens also includes an aperture arranged between the fourth lens and the fifth lens, d8 is the spacing distance between the fourth lens and the aperture, d9 is the spacing distance between the aperture and the fifth lens, d10 is the center thickness of the fifth lens, D22 is the maximum light-clearing semi-aperture of the second side surface of the second lens corresponding to the maximum field of view of the optical lens, SAG(4) is the sag height of the second side surface of the second lens, BFL is the optical back focus of the optical lens, r5 is the curvature radius of the first side surface of the third lens, d5 is the center thickness of the third lens, F7 is the focal length of the seventh lens, d3 is the center thickness of the second lens, d4 is the air gap between the second lens and the third lens, and d1 is the center thickness of the first lens.

32. An optical lens, characterized in that: The optical lens comprises, in sequence from the first side to the second side along the optical axis: a first lens having negative optical power; a second lens having negative optical power; a third lens having positive optical power; a fourth lens element having positive optical power; a fifth lens having optical power; a sixth lens having optical power; and a seventh lens having positive optical power; The total effective focal length F of the optical lens, the curvature radius r7 of the first side surface of the fourth lens, and the curvature radius r8 of the second side surface of the fourth lens satisfy the following conditions: 0.20≤|F / r7|+|F / r8|≤1.0; The fifth lens and the sixth lens are cemented together to form a cemented lens; The focal length F56 of the cemented lens group composed of the fifth lens and the sixth lens and the total effective focal length F of the optical lens satisfy the following: 5≤|F56 / F|≤65; The curvature radius r5 of the first side surface of the third lens and the total effective focal length F of the optical lens satisfy: 3≤r5 / F≤10; The total effective focal length F of the optical lens and the focal length F3 of the third lens satisfy: 4.6490≤F3 / F≤8.

33. The optical lens according to claim 32, wherein: 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.

34. The optical lens according to claim 32, wherein: The first side surface of the second lens is a convex surface, and the second side surface of the second lens is a concave surface.

35. The optical lens according to claim 34, wherein: An edge angle θ1 of the first side surface of the second lens at the maximum field angle and a central angle θ2 of the first side surface of the second lens satisfy the following: -50°≤θ1-θ2≤-5°.

36. The optical lens according to claim 34, wherein: The first side surface of the second lens is a convex surface, and the diameter of the first side surface of the second lens is 1 o'clock Yadaka SAG ( 1) The aperture of the first side surface of the second lens is 2 o'clock Yadaka SAG ( 2) Satisfy: |SAG( 1)|=|SAG( 2)| and 0< 2< 1, 3≤ 1≤4.

5.

37. The optical lens according to claim 32, wherein: The first side surface of the second lens is a concave surface, and the second side surface of the second lens is a concave surface.

38. The optical lens according to claim 32, wherein: 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.

39. The optical lens according to claim 32, wherein: 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.

40. The optical lens according to claim 32, wherein: The first side surface of the fourth lens is a convex surface, and the second side surface of the fourth lens is a concave surface.

41. The optical lens according to claim 32, wherein: The fifth lens has positive optical power, and its first side surface is convex, and its second side surface is convex.

42. The optical lens according to claim 32, wherein: The fifth lens has negative optical power, and its first side surface is concave, and its second side surface is concave.

43. The optical lens according to claim 32, wherein: The sixth lens has negative optical power, and its first side surface is concave, and its second side surface is concave.

44. The optical lens according to claim 32, wherein: The sixth lens has negative optical power, a first side surface of the sixth lens is concave, and a second side surface of the sixth lens is convex.

45. The optical lens according to claim 32, wherein: The sixth lens has positive refractive power, and its first side surface is convex, and its second side surface is convex.

46. ​​The optical lens according to claim 32, wherein: The first side surface of the seventh lens is convex, and the second side surface is convex.

47. The optical lens according to any one of claims 32 to 46, wherein: A curvature radius r7 of the first side surface of the fourth lens and a center thickness d7 of the fourth lens satisfy the following: 1.5≤r7 / d7≤3.6351.

48. The optical lens according to any one of claims 32 to 46, wherein: The sag height SAG(11) of the bonding surface between the fifth lens and the sixth lens and the center thickness d11 of the sixth lens satisfy the following: -2≤arctan(SAG(11) / d11)≤0.0422.

49. The optical lens according to any one of claims 32 to 46, wherein: The focal length F56 of the cemented lens group composed of the fifth lens and the sixth lens and the total effective focal length F of the optical lens satisfy the following: 6.5≤|F56 / F|≤60.

50. The optical lens according to any one of claims 32 to 46, wherein: The maximum field of view FOV of the optical lens, the maximum clear aperture D of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens satisfy the following conditions: 2.0417≤D / H / FOV×180°≤5.

4.

51. The optical lens according to any one of claims 32 to 46, wherein: The maximum clear semi-aperture D7 of the first side surface of the fourth lens corresponding to the maximum field of view of the optical lens, the curvature radius r7 of the first side surface of the fourth lens, and the sag height SAG(7) of the first side surface of the fourth lens satisfy the following conditions: 0.1≤arctan(D7 / (r7-SAG(7)))≤0.3797.

52. The optical lens according to any one of claims 32-46, wherein: The refractive index Nd1 of the first lens satisfies: 1.6≤Nd1≤3.9100.

53. The optical lens according to any one of claims 32 to 46, wherein: The total effective focal length F of the optical lens and the focal length F3 of the third lens satisfy: 4.6490≤F3 / F≤6.4385.

54. The optical lens according to any one of claims 32-46, characterized in that: The optical lens also includes an aperture arranged between the fourth lens and the fifth lens. The total optical length TTL of the optical lens, the center thickness d7 of the fourth lens, the spacing distance d8 between the fourth lens and the aperture, the spacing distance d9 between the aperture and the fifth lens, the center thickness d10 of the fifth lens, and the center thickness d11 of the sixth lens satisfy the following: 0.2045≤(d7+d8+d9+d10+d11) / TTL≤0.2601.

55. The optical lens according to any one of claims 32-46, characterized in that: The maximum light-transmitting semi-aperture D22 of the second side surface of the second lens corresponding to the maximum field angle of the optical lens and the sag height SAG(4) of the second side surface of the second lens satisfy the following conditions: 0.6≤SAG(4) / D22≤0.9642.

56. The optical lens according to any one of claims 32 to 46, wherein: The total optical length TTL of the optical lens and the optical back focus BFL of the optical lens satisfy the following conditions: 0.04≤BFL / TTL≤0.1462.

57. The optical lens according to any one of claims 32 to 46, wherein: A curvature radius r5 of the first side surface of the third lens and a center thickness d5 of the third lens: 1.5≤r5 / d5≤3.6522.

58. The optical lens according to any one of claims 32-46, characterized in that: The focal length F7 of the seventh lens and the total effective focal length F of the optical lens satisfy the following: 2.8166≤F7 / F≤3.

9.

59. The optical lens according to any one of claims 32-46, characterized in that: A center thickness d3 of the second lens and an air gap d4 between the second lens and the third lens satisfy the following: 0.25≤d3 / d4≤0.

65.

60. The optical lens according to any one of claims 32-46, characterized in that: The curvature radius r5 of the first side surface of the third lens and the total effective focal length F of the optical lens satisfy: 4≤r5 / F≤9.

5.

61. The optical lens according to any one of claims 32-46, characterized in that: The optical lens further includes an aperture arranged between the fourth lens and the fifth lens, and a distance d8 between the fourth lens and the aperture and a distance d9 between the aperture and the fifth lens satisfy the following conditions: 0.018≤(d8+d9) / TTL≤0.0508.

62. The optical lens according to any one of claims 32-46, characterized in that: The center thickness d1 of the first lens, the center thickness d3 of the second lens, and the total optical length TTL of the optical lens satisfy the following: 0.05≤(d1+d3) / TTL≤0.1247.

63. The optical lens according to claim 35, wherein: An edge angle θ1 of the first side surface of the second lens at the maximum field angle and a central angle θ2 of the first side surface of the second lens satisfy the following: -45°≤θ1-θ2≤-8°.

64. The optical lens according to claim 32, wherein: The total effective focal length F of the optical lens, the curvature radius r7 of the first side surface of the fourth lens, and the curvature radius r8 of the second side surface of the fourth lens satisfy: 0.3≤|F / r7|+|F / r8|≤0.4973.

65. The optical lens according to claim 32, wherein: The optical lens satisfies at least one of the following conditions: -42.3710°≤θ1-θ2≤-9.9980°, 2.9098≤r7 / d7≤3.6351， 0.3648≤|F / r7|+|F / r8|≤0.4973, -1.0602≤(arctan(SAG(11) / d11)≤0.0422, 8.9871≤|F56 / F|≤54.7283, 2.0417≤D / H / FOV×180°≤2.7228, 0.2917≤arctan(D7 / (r7-SAG(7)))≤0.3797, 1.9100≤Nd1≤3.9100, 0.2045≤(d7+d8+d9+d10+d11) / TTL≤0.2601, 0.8062≤SAG(4) / D22≤0.9642, 0.0968≤BFL / TTL≤0.1462, 2.8191≤r5 / d5≤3.6522， 2.8166≤F7 / F≤3.8119, 0.3701≤d3 / d4≤0.5823, 4.5777≤r5 / F≤9.1327， 0.0229≤(d8+d9) / TTL≤0.0508, 0.1085≤(d1+d3) / TTL≤0.1247, in, θ1 is the edge angle of the first side surface of the second lens at the maximum field of view angle, θ2 is the center angle of the first side surface of the second lens, r7 is the curvature radius of the first side surface of the fourth lens, d7 is the center thickness of the fourth lens, F is the total effective focal length of the optical lens, r8 is the curvature radius of the second side surface of the fourth lens, SAG(11) is the sag of the cemented surface between the fifth lens and the sixth lens, d11 is the center thickness of the sixth lens, F56 is the focal length of the cemented lens group composed of the fifth lens and the sixth lens, FOV is the maximum field of view angle of the optical lens, D is the maximum clear aperture of the first side surface of the first lens corresponding to the maximum field of view angle of the optical lens, H is the image height corresponding to the maximum field of view angle of the optical lens, D7 is the maximum clear semi-aperture of the first side surface of the fourth lens corresponding to the maximum field of view angle of the optical lens, SAG(7) is the first The side sag is Nd1, Nd2 is the refractive index of the first lens, F3 is the focal length of the third lens, TTL is the total optical length of the optical lens, the optical lens also includes an aperture arranged between the fourth lens and the fifth lens, d8 is the spacing distance between the fourth lens and the aperture, d9 is the spacing distance between the aperture and the fifth lens, d10 is the center thickness of the fifth lens, D22 is the maximum light-clearing semi-aperture of the second side of the second lens corresponding to the maximum field of view of the optical lens, SAG(4) is the sag of the second side of the second lens, BFL is the optical back focus of the optical lens, r5 is the curvature radius of the first side of the third lens, d5 is the center thickness of the third lens, F7 is the focal length of the seventh lens, d3 is the center thickness of the second lens, d4 is the air gap between the second lens and the third lens, and d1 is the center thickness of the first lens.

66. An electronic device, characterized in that The invention comprises an optical lens according to any one of claims 1 to 65 and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

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