Optical lens and electronic equipment

Abstract

The invention discloses an optical lens and electronic equipment, and the optical lens sequentially comprises a first lens with positive focal power from a first side to a second side along an optical axis, a second lens with negative focal power, a third lens with positive focal power, a fourth lens with positive focal power, a fifth lens and a sixth lens from the first side to the second side, the first side surface of the second lens is a concave surface; the third lens has negative focal power, and the first side surface of the third lens is a concave surface; the second side surface of the fourth lens is a convex surface; the fifth lens has positive focal power, and the first side surface of the fifth lens is a convex surface; the first side surface of the sixth lens is a convex surface, and the second side surface of the sixth lens is a concave surface; the first side surface of the seventh lens is a convex surface, and the second side surface of the seventh lens is a concave surface.

Description

Technical Field

[0001] This application relates to the field of optical devices, and particularly to a seven-piece optical lens and an electronic device. Background Art

[0002] The lidar lens is a key component for the autonomous driving assistance system to obtain external information. With the rapid development of the autonomous driving assistance system, the demand for lidar lenses has increased. Compared with ordinary optical lenses, lidar lenses have special requirements. For example, lidar lenses are developing towards high light-transmitting ability, high resolution, and miniaturization.

[0003] However, the existing lidar lenses have weak light-transmitting ability and cannot adapt to the darker environments at night or on rainy and cloudy days. The existing lidar lenses also cannot achieve a small front aperture diameter and miniaturization simultaneously. Summary of the Invention

[0004] This application provides an optical lens and an electronic device that can at least solve or partially solve at least one problem or other problems existing in the prior art.

[0005] In a first aspect of this application, there is provided such an optical lens, which sequentially includes, along the optical axis from a first side to a second side: a first lens with a positive optical power, whose first side is convex and second side is concave; a second lens with a negative optical power, whose first side is concave; a third lens with a negative optical power, whose first side is concave; a fourth lens with a positive optical power, whose second side is convex; a fifth lens with a positive optical power, whose first side is convex; a sixth lens with an optical power, whose first side is convex and second side is concave; and a seventh lens with an optical power, whose first side is convex and second side is concave.

[0006] According to an exemplary embodiment of this application, the second side of the second lens is concave or convex.

[0007] According to an exemplary embodiment of this application, the second side of the third lens is concave or convex.

[0008] According to an exemplary embodiment of this application, the first side of the fourth lens is concave or convex.

[0009] According to an exemplary embodiment of this application, the second side of the fifth lens is concave or convex.

[0010] According to an exemplary embodiment of this application, the sixth lens has a positive optical power or a negative optical power.

[0011] According to an exemplary embodiment of this application, the seventh lens has a positive optical power.

[0012] According to an exemplary embodiment of the present application, the seventh lens has a negative optical power.

[0013] According to an exemplary embodiment of the present application, the total optical length TTL of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, and the maximum field of view angle FOV of the optical lens satisfy: (TTL × 180°) / (H × FOV) ≤ 72.

[0014] According to an exemplary embodiment of the present application, the maximum clear aperture D of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, and the maximum field of view angle FOV of the optical lens satisfy: (D × 180°) / (H × FOV) ≤ 54.

[0015] According to an exemplary embodiment of the present application, the overall focal length value F of the optical lens, the maximum clear aperture D of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, and the radian value θ of the maximum field of view angle of the optical lens satisfy: (F × θ) / D ≥ 0.2.

[0016] According to an exemplary embodiment of the present application, the total optical length TTL of the optical lens and the back focal length BFL of the optical lens satisfy: BFL / TTL ≤ 0.2.

[0017] According to an exemplary embodiment of the present application, the overall focal length value F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy: F / ENPD ≤ 1.4.

[0018] According to an exemplary embodiment of the present application, the overall focal length value F of the optical lens and the entrance pupil diameter ENPD of the optical lens satisfy: F / ENPD ≤ 1.

[0019] According to an exemplary embodiment of the present application, the overall focal length value F of the optical lens and the image height H corresponding to the maximum field of view angle of the optical lens satisfy: 1 ≤ F / H ≤ 2.4.

[0020] According to an exemplary embodiment of the present application, the overall focal length value F of the optical lens and the image height H corresponding to the maximum field of view angle of the optical lens satisfy: 1.5 ≤ F / H ≤ 2.

[0021] According to an exemplary embodiment of the present application, the total optical length TTL of the optical lens and the overall focal length value F of the optical lens satisfy: TTL / F ≤ 5.5.

[0022] According to an exemplary embodiment of the present application, the focal length value F1 of the first lens and the overall focal length value F of the optical lens satisfy: F1 / F ≥ 1.5.

[0023] According to an exemplary embodiment of the present application, the focal length value F2 of the second lens and the overall focal length value F of the optical lens satisfy: -6 ≤ F2 / F ≤ -0.5.

[0024] According to an exemplary embodiment of the present application, the focal length value F2 of the second lens and the overall focal length value F of the optical lens satisfy: -5 ≤ F2 / F ≤ -1.2.

[0025] According to an exemplary embodiment of the present application, the focal length value F4 of the fourth lens and the overall focal length value F of the optical lens satisfy: 1 ≤ F4 / F ≤ 8.

[0026] According to an exemplary embodiment of the present application, the focal length value F5 of the fifth lens and the overall focal length value F of the optical lens satisfy: 1 ≤ F5 / F ≤ 8.

[0027] According to an exemplary embodiment of the present application, the radius of curvature R13 of the first side of the seventh lens and the radius of curvature R14 of the second side of the seventh lens satisfy: 0.5 ≤ R13 / R14 ≤ 1.5.

[0028] According to an exemplary embodiment of the present application, the radius of curvature R13 of the first side of the seventh lens and the radius of curvature R14 of the second side of the seventh lens satisfy: 0.6 ≤ R13 / R14 ≤ 1.3.

[0029] According to an exemplary embodiment of the present application, the radius of curvature R11 of the first side of the sixth lens and the radius of curvature R12 of the second side of the sixth lens satisfy: 0.3 ≤ R11 / R12 ≤ 1.5.

[0030] According to an exemplary embodiment of the present application, the radius of curvature R11 of the first side of the sixth lens and the radius of curvature R12 of the second side of the sixth lens satisfy: 0.5 ≤ R11 / R12 ≤ 1.3.

[0031] According to an exemplary embodiment of the present application, the air gap d34 on the optical axis between the third lens and the fourth lens and the overall focal length value F of the optical lens satisfy: d34 / F ≥ 0.08.

[0032] According to an exemplary embodiment of the present application, the air gap d34 on the optical axis between the third lens and the fourth lens and the overall focal length value F of the optical lens satisfy: 0.1 ≤ d34 / F ≤ 0.8.

[0033] According to an exemplary embodiment of the present application, the refractive index Nd5 of the fifth lens and the overall refractive power of the optical lens satisfy:

[0034] According to an exemplary embodiment of the present application, the combined refractive power of the fourth lens and the fifth lens is satisfied with the overall optical power of the optical lens Satisfy:

[0035] According to an exemplary embodiment of the present application, the combined optical power of the fourth lens and the fifth lens is satisfied with the overall optical power of the optical lens Satisfy:

[0036] According to an exemplary embodiment of the present application, the radius of curvature R1 of the first side of the first lens and the overall focal length value F of the optical lens satisfy: R1 / F ≤ 4.

[0037] According to an exemplary embodiment of the present application, the radius of curvature R3 of the first side of the second lens and the overall focal length value F of the optical lens satisfy: R3 / F ≤ -0.5.

[0038] According to an exemplary embodiment of the present application, the radius of curvature R11 of the first side of the sixth lens and the overall focal length value F of the optical lens satisfy: R11 / F ≤ 2.

[0039] According to an exemplary embodiment of the present application, the radius of curvature R12 of the second side of the sixth lens and the overall focal length value F of the optical lens satisfy: R12 / F ≤ 2.4.

[0040] According to an exemplary embodiment of the present application, the radius of curvature R13 of the first side of the seventh lens and the overall focal length value F of the optical lens satisfy: R13 / F ≤ 2.

[0041] According to an exemplary embodiment of the present application, the radius of curvature R13 of the first side of the seventh lens and the overall focal length value F of the optical lens satisfy: 0.4 ≤ R13 / F ≤ 1.5.

[0042] According to an exemplary embodiment of the present application, the radius of curvature R14 of the second side of the seventh lens and the overall focal length value F of the optical lens satisfy: R14 / F ≤ 2.

[0043] According to an exemplary embodiment of the present application, the radius of curvature R14 of the second side of the seventh lens and the overall focal length value F of the optical lens satisfy: 0.5 ≤ R14 / F ≤ 1.5.

[0044] According to an exemplary embodiment of the present application, the maximum clear aperture D7 of the first side of the fourth lens corresponding to the maximum field of view angle of the optical lens, the maximum clear aperture D8 of the second side of the fourth lens corresponding to the maximum field of view angle of the optical lens and the overall focal length value F of the optical lens satisfy: (D7 + D8) / 2 / F ≥ 1.1.

[0045] According to an exemplary embodiment of the present application, the maximum clear aperture D7 of the first side of the fourth lens corresponding to the maximum field of view angle of the optical lens, the maximum clear aperture D8 of the second side of the fourth lens corresponding to the maximum field of view angle of the optical lens, and the overall focal length value F of the optical lens satisfy: 1.5 ≤ (D7 + D8) / 2 / F ≤ 2.5.

[0046] According to an exemplary embodiment of the present application, the sagittal height SAG3 of the first side of the second lens and the maximum clear aperture D3 of the first side of the second lens corresponding to the maximum field of view angle of the optical lens satisfy: -0.8 ≤ SAG3 / (D3 / 2) ≤ -0.1.

[0047] According to an exemplary embodiment of the present application, the sagittal height SAG3 of the first side of the second lens and the maximum clear aperture D3 of the first side of the second lens corresponding to the maximum field of view angle of the optical lens satisfy: -0.5 ≤ SAG3 / (D3 / 2) ≤ -0.12.

[0048] According to an exemplary embodiment of the present application, the maximum field of view angle FOV of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, and the overall focal length value F of the optical lens satisfy: (FOV × F) / H ≥ 50°.

[0049] According to an exemplary embodiment of the present application, the maximum field of view angle FOV of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, and the overall focal length value F of the optical lens satisfy: 55° ≤ (FOV × F) / H ≤ 65°.

[0050] According to an exemplary embodiment of the present application, the overall focal length value F of the optical lens, the radius of curvature R3 of the first side of the second lens, and the radius of curvature R4 of the second side of the second lens satisfy: 0.3 ≤ |F / R3| + |F / R4| ≤ 1.5.

[0051] According to an exemplary embodiment of the present application, the overall focal length value F of the optical lens, the radius of curvature R3 of the first side of the second lens, and the radius of curvature R4 of the second side of the second lens satisfy: 0.4 ≤ |F / R3| + |F / R4| ≤ 1.3.

[0052] According to an exemplary embodiment of the present application, the focal length value F4 of the fourth lens and the focal length value F5 of the fifth lens satisfy: |F4 / F5| ≤ 2.5.

[0053] According to an exemplary embodiment of the present application, the focal length value F4 of the fourth lens and the focal length value F5 of the fifth lens satisfy: 0.5 ≤ |F4 / F5| ≤ 2.2.

[0054] According to an exemplary embodiment of the present application, the maximum light transmission aperture D8 of the second side of the fourth lens corresponding to the maximum field of view angle of the optical lens and the maximum light transmission aperture D14 of the second side of the seventh lens corresponding to the maximum field of view angle of the optical lens satisfy: D14 / D8 ≤ 0.8.

[0055] According to an exemplary embodiment of the present application, the maximum light transmission aperture D8 of the second side of the fourth lens corresponding to the maximum field of view angle of the optical lens and the maximum light transmission aperture D14 of the second side of the seventh lens corresponding to the maximum field of view angle of the optical lens satisfy: D14 / D8 ≤ 0.6.

[0056] A second aspect of the present application provides an optical lens which sequentially includes, along the optical axis from the first side to the second side, a first lens with a positive optical power, a second lens with a negative optical power, a third lens with a negative optical power, a fourth lens with a positive optical power, a fifth lens with a positive optical power, a sixth lens with an optical power, and a seventh lens with an optical power; wherein, the air interval d34 between the third lens and the fourth lens on the optical axis and the overall focal length value F of the optical lens satisfy: d34 / F ≥ 0.08.

[0057] A third aspect of the present application provides an electronic device which includes the optical lens in the above exemplary embodiment and an imaging element for converting the optical image formed by the optical lens into an electrical signal.

[0058] The present application uses, for example, seven lenses with optical powers, and by optimizing the shapes and optical powers of the respective lenses, at least one of the beneficial effects such as miniaturization, small aperture, long focal length, short back focal length, high light transmission amount, and high resolution of the optical lens can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, objectives, and advantages of the present application will become more obvious. Among them:

[0060] Figure 1 Shows a schematic structural diagram of an optical lens according to Embodiment 1 of the present application;

[0061] Figure 2 Shows a schematic structural diagram of an optical lens according to Embodiment 2 of the present application;

[0062] Figure 3 Shows a schematic structural diagram of an optical lens according to Embodiment 3 of the present application;

[0063] Figure 4 Shows a schematic structural diagram of an optical lens according to Embodiment 4 of the present application;

[0064] Figure 5Shows a schematic structural diagram of an optical lens according to Embodiment 5 of the present application;

[0065] Figure 6 Shows a schematic structural diagram of an optical lens according to Embodiment 6 of the present application;

[0066] Figure 7 Shows a schematic structural diagram of an optical lens according to Embodiment 7 of the present application;

[0067] Figure 8 Shows a schematic structural diagram of an optical lens according to Embodiment 8 of the present application;

[0068] Figure 9 Shows a schematic structural diagram of an optical lens according to Embodiment 9 of the present application;

[0069] Figure 10 Shows a schematic structural diagram of an optical lens according to Embodiment 10 of the present application;

[0070] Figure 11 Shows a schematic structural diagram of an optical lens according to Embodiment 11 of the present application;

[0071] Figure 12 Shows a schematic structural diagram of an optical lens according to Embodiment 12 of the present application;

[0072] Figure 13 Shows a schematic structural diagram of an optical lens according to Embodiment 13 of the present application;

[0073] Figure 14 Shows a schematic structural diagram of an optical lens according to Embodiment 14 of the present application;

[0074] Figure 15 Shows a schematic structural diagram of an optical lens according to Embodiment 15 of the present application; and

[0075] Figure 16 Shows a schematic structural diagram of an optical lens according to Embodiment 16 of the present application. Detailed Description of the Embodiments

[0076] To better understand the present application, more detailed descriptions of various aspects of the present application will be made with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of the exemplary embodiments of the present application and do not limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0077] It should be noted that in this specification, the expressions such as first, second, third, etc. are only used to distinguish one feature from another, and do not represent any limitation on the features. Therefore, without departing from the teachings of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0078] In the drawings, for ease of illustration, the thickness, dimensions, and shape of the lenses have been slightly exaggerated. Specifically, the spherical or aspherical shapes shown in the drawings are shown by way of example. That is, the spherical or aspherical shapes are not limited to the spherical or aspherical shapes shown in the drawings. The drawings are for illustrative purposes only and are not drawn to an exact scale.

[0079] In this document, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the first side is called the first side surface of the lens, and the surface of each lens closest to the second side is called the second side surface of the lens.

[0080] It should also be understood that the terms "comprises", "comprising", and / or "having", 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 describing the embodiments of the present application, the use of "may" means "one or more embodiments of the present application". And the term "exemplary" is intended to refer to an example or illustration.

[0081] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that terms (such as those defined in a common dictionary) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0082] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0083] The features, principles, and other aspects of the present application will be described in detail below.

[0084] According to an exemplary embodiment of the present application, the optical lens may include, for example, seven lenses with 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, and the seven lenses are arranged in sequence from the first side to the second side along the optical axis.

[0085] In an exemplary embodiment, the optical lens may be used as, for example, an imaging lens, in which case the first side of the optical lens may be an object side and the second side may be an image side. Light from the object side may be imaged on the image side. The second side of the optical lens is provided with an imaging surface of the optical lens.

[0086] In an exemplary embodiment, the optical lens can be used as, for example, a projection lens or a laser radar transmitting end lens. In this case, the second side of the optical lens can be an image source side, and the first side can be an imaging side. Light from the image source side can be imaged on the imaging side. The second side of the optical lens is provided with an image source surface of the optical lens.

[0087] In an exemplary embodiment, the first lens may have positive optical power, and its first side surface may be, for example, a convex surface, and the second side surface may be, for example, a concave surface. The first lens is designed as a positive lens convex to the first side, which can collect as much light as possible into the system, and the second side surface of the first lens is designed as a concave surface, which can make the light transition to the rear system as smoothly as possible, which is conducive to achieving low sensitivity and small front-end diameter of the optical lens. In addition, the first side surface of the first lens is designed as a convex surface, which can also facilitate the sliding of substances such as water droplets in practical applications, reducing the impact of these substances on imaging. In other examples, the first lens is made of a high refractive index material, which is conducive to reducing the front port diameter of the system and improving the imaging quality of the optical lens.

[0088] In an exemplary embodiment, the second lens may have a negative optical focal length, and its first side surface may be, for example, a concave surface, and the second side surface may be, for example, a convex surface. The second lens is designed as a negative lens, which collects the light emitted from the first lens and appropriately diverges the light, so that the rear system has a larger light receiving surface, which is beneficial to increase the illumination of the picture. At the same time, the concave-convex design can make the light emitted from the first lens smoothly transition to the rear system. The first side surface of the second lens is designed as a concave surface, which cooperates with the second side surface of the first lens, so that the light emitted from the first lens is smoothly incident on the first side surface of the second lens, which is beneficial to reduce the sensitivity of the optical lens. The second side surface of the second lens is designed as a convex surface, which can make the light smoothly transition to the rear system, and at the same time, it can also appropriately converge and gather the light to reduce the rear port diameter of the optical lens.

[0089] In an exemplary embodiment, the second lens may have a negative optical power, and its first side surface may be, for example, a concave surface, and the second side surface may be, for example, a concave surface. The second lens is designed as a biconcave negative lens, which collects the light emitted from the first lens and appropriately diverges the light, which is conducive to expanding the aperture of the diaphragm, thereby increasing the aperture of the optical lens, and realizing a large aperture and high light throughput of the optical lens. The first side surface of the second lens is designed as a concave surface, which cooperates with the second side surface of the first lens so that the light emitted from the first lens is smoothly incident on the first side surface of the second lens, which is conducive to reducing the sensitivity of the light between the first lens and the second lens. The second side surface of the second lens is designed as a concave surface and has a large radius of curvature, which can make the light rise appropriately, so that the peripheral light can reach a higher imaging position, reduce the difference between the light reaching the image plane and the main light angle of the back-end chip, thereby reducing the loss of light energy, which is conducive to improving the illumination of the edge field of view.

[0090] In an exemplary embodiment, the third lens may have a negative optical power, and its first side surface may be, for example, a concave surface, and its second side surface may be, for example, a convex surface. The third lens is designed as a negative lens, which is conducive to further diffusing the light emitted from the second lens and appropriately adjusting the light trend. At the same time, the concave-convex design of the third lens can make the light emitted from the second lens smoothly transition to the rear system. In addition, the first side surface of the third lens is designed as a concave surface, which can collect as much light as possible from the peripheral field of view and reduce the loss of light energy. The second side surface of the third lens is designed as a convex surface, which can make the light smoothly transition to the rear system, and at the same time, it can also appropriately converge and gather the light to reduce the rear port diameter of the optical lens.

[0091] In an exemplary embodiment, the third lens may have a negative optical power, and its first side surface may be, for example, a concave surface, and its second side surface may be, for example, a concave surface. The third lens is designed as a negative lens, which can collect the light emitted from the second lens as much as possible and diffuse the light appropriately, which is beneficial to expand the aperture of the diaphragm, thereby increasing the aperture of the optical lens, and realizing a large aperture and high light throughput of the optical lens. The first side surface of the third lens is designed as a concave surface, which can collect as much light as possible from the peripheral field of view and reduce light energy loss. The second side surface of the third lens is designed as a concave surface and has a large radius of curvature, which can make the light rise appropriately, so that the peripheral light can reach a higher imaging position, reduce the difference between the light reaching the image plane and the main light angle of the back-end chip, thereby reducing light energy loss, which is beneficial to improve the illumination of the edge field of view.

[0092] In an exemplary embodiment, the fourth lens may have a positive focal power. Its first side may be, for example, concave, and its second side may be, for example, convex. The fourth lens is designed as a positive lens, which is beneficial for converging light. And the first side of the fourth lens is designed as concave, which can make the light converge to a certain extent, facilitating a smooth transition of the light trend in the whole system and reducing the sensitivity of the optical lens. The first side of the fourth lens is designed as concave, which can collect as much light as possible in the peripheral field of view, reduce the loss of light energy, and increase the illuminance of the edge field of view. At the same time, it can also change the light trend at the edge, reduce the front aperture of the optical lens, and achieve a miniaturized design of the optical lens. The second side of the fourth lens is designed as convex, which can make the light converge and exit more reasonably, reduce the defocus between different fields of view, and is beneficial for improving the resolution ability of the optical lens.

[0093] In an exemplary embodiment, the fourth lens may have a positive focal power. Its first side may be, for example, convex, and its second side may be, for example, convex. The fourth lens is designed as a positive lens, which is beneficial for converging light. The first side of the fourth lens is designed as convex, which can compress the height of the light incident through the third lens. And the second side of the fourth lens is designed as convex, which can make the light exiting through the third lens converge further and enter the subsequent system smoothly, facilitating the reduction of the front aperture of the optical lens. The fourth lens is used in combination with the fifth lens having a positive focal power, which is beneficial for adjusting the optical path difference between the lights of different fields of view and achieving high resolution of the optical lens. In addition, the second side of the fourth lens is designed as convex, which can make the light converge after passing through the fourth lens, enabling the light in the peripheral field of view to pass through the aperture and enter the subsequent system as much and as quickly as possible, which is beneficial for increasing the overall light transmittance and illuminance of the optical lens.

[0094] In an exemplary embodiment, the fifth lens may have a positive focal power. Its first side may be, for example, convex, and its second side may be, for example, concave. The fifth lens is designed as a meniscus positive lens, which can make the light diverged by the front lens converge further, facilitating a smooth transition of the light trend in the whole system and reducing the sensitivity of the optical lens. The first side of the fifth lens is designed as convex, making the light converge first within the fifth lens, reducing the distribution range of the light of the same field of view on the image plane, weakening the coupling relationship between the lights of different fields of view on the image plane, and being beneficial for better correcting the lights of each field of view and improving the resolution ability of the optical lens.

[0095] In an exemplary embodiment, the fifth lens may have a positive focal power. Its first side may be, for example, convex, and its second side may be, for example, convex. The fifth lens is designed as a meniscus positive lens, which can make the light diverged by the front lens converge further, facilitating a smooth transition of the light trend in the whole system and reducing the sensitivity of the optical lens. The double-convex design of the fifth lens can make the light converge towards the image plane, while adjusting the aberration of the lights of each field of view and improving the resolution ability of the optical lens.

[0096] In an exemplary embodiment, the sixth lens may have a positive optical power. Its first side may be, for example, convex, and its second side may be, for example, concave. The sixth lens is designed as a positive lens, and its shape is meniscus-shaped (i.e., its shape is close to concentric circles), which can enable the smooth transition of light rays with a large front aperture. At the same time, it can also appropriately converge the light rays, reduce the back focal length of the optical lens to a certain extent, and further reduce the overall optical length of the optical lens. The first side of the sixth lens is designed as convex, which can collect more light rays into the rear system. The second side of the sixth lens is designed as concave, which can enable the smooth transition of the light rays emerging from the sixth lens, facilitating the correction of light rays in each field of view.

[0097] In an exemplary embodiment, the sixth lens may have a negative optical power. Its first side may be, for example, convex, and its second side may be, for example, concave. The sixth lens is designed as a negative lens, and its shape is meniscus-shaped (i.e., its shape is close to concentric circles), which can enable the smooth transition of light rays with a large front aperture. The first side of the sixth lens is designed as convex, which can collect more light rays into the rear system. The second side of the sixth lens is designed as concave, which can enable the smooth transition of the light rays emerging from the sixth lens, facilitating the correction of light rays in each field of view.

[0098] In an exemplary embodiment, the seventh lens may have a positive optical power. Its first side may be, for example, convex, and its second side may be, for example, concave. The seventh lens is designed as a positive lens, which is conducive to the rapid convergence of light rays, and its shape is meniscus-shaped (i.e., its shape is close to concentric circles), which can enable the smooth transition of light rays with a large front aperture, reduce the back focal length of the optical lens to a certain extent, and further reduce the overall optical length of the optical lens. In other examples, the seventh lens is an aspherical lens, and the curvatures at various positions on the surface of the aspherical lens are different, which can effectively correct aberration and field curvature and improve the resolution ability of the optical lens.

[0099] In an exemplary embodiment, the seventh lens may have a negative optical power. Its first side may be, for example, convex, and its second side may be, for example, concave. The seventh lens is designed as a negative lens, which is conducive to the appropriate diffusion of light rays and their smooth transition to the image plane, and its shape is meniscus-shaped (i.e., its shape is close to concentric circles), which can achieve a small chief ray angle (CRA) of the optical lens, enabling the light rays with a large front aperture to quickly and smoothly enter the surface of the rear-end chip, reduce the back focal length of the optical lens to a certain extent, and further reduce the overall optical length of the optical lens, improving the resolution ability of the optical lens.

[0100] In an exemplary embodiment, the seventh lens is configured as an aspherical lens. The curvatures at various positions on the surface of the aspherical lens are different, which can effectively correct aberration and field curvature and improve the resolution ability of the optical lens.

[0101] In an exemplary embodiment, the optical lens may further include a diaphragm, which may be disposed, for example, between the third lens and the fourth lens. By disposing the diaphragm between the third lens and the fourth lens, it is beneficial for the light to smoothly transition to the rear of the system, reduce the aperture of the rear lens, and lower the assembly sensitivity of the optical lens. It should be understood that the diaphragm being disposed between the third lens and the fourth lens is only exemplary, and the present application does not specifically limit this. According to actual needs, the diaphragm can also be disposed at other positions.

[0102] In an exemplary embodiment, the optical lens may further include a filter disposed between the seventh lens and the imaging surface or the image source surface to filter light rays with different wavelengths. The optical lens may also be provided with a protective glass between the filter and the imaging surface according to actual needs to prevent the internal components (such as chips) of the optical lens from being damaged.

[0103] In an exemplary embodiment, the optical lens may further include a photosensitive element disposed on the second side. Optionally, the photosensitive element disposed on the second side may be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor element (CMOS).

[0104] In an exemplary embodiment, the total optical length TTL of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, and the maximum field of view angle FOV of the optical lens may satisfy: (TTL × 180°) / (H × FOV) ≤ 72. In an example, 18 ≤ (TTL × 180°) / (H × FOV) ≤ 54. Reasonably controlling the mutual relationship among the total optical length of the optical lens, the image height corresponding to the maximum field of view angle of the optical lens, and the maximum field of view angle of the optical lens is beneficial for reducing the total optical length of the optical lens and realizing the miniaturization of the optical lens when the maximum field of view angle of the optical lens and the image height corresponding to the maximum field of view angle of the optical lens are determined.

[0105] In an exemplary embodiment, the maximum clear aperture D of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, and the radian value θ of the maximum field of view angle of the optical lens may satisfy: D / H / θ ≤ 8. In an example, 4 ≤ D / H / θ ≤ 7. Reasonably controlling the mutual relationship among the maximum clear aperture of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, the image height corresponding to the maximum field of view angle of the optical lens, and the radian value of the maximum field of view angle of the optical lens can enable the optical lens to have a smaller front aperture, reduce the volume of the optical lens, and thus realize the miniaturization of the optical lens.

[0106] In an exemplary embodiment, the maximum clear aperture D of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, and the maximum field of view angle FOV of the optical lens may satisfy: (D × 180°) / (H × FOV) ≤ 54. In an example, 10.8 ≤ (D × 180°) / (H × FOV) ≤ 27. By reasonably controlling the relationship among the maximum clear aperture of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, the image height corresponding to the maximum field of view angle of the optical lens, and the maximum field of view angle of the optical lens, the optical lens can have a smaller front aperture, reduce the volume of the optical lens, and thus achieve miniaturization of the optical lens.

[0107] In an exemplary embodiment, the overall focal length value F of the optical lens, the maximum clear aperture D of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, and the radian value θ of the maximum field of view angle of the optical lens may satisfy: (F × θ) / D ≥ 0.2. In an example, 0.25 ≤ (F × θ) / D ≤ 0.5. By reasonably controlling the relationship among the overall focal length value of the optical lens, the radian value of the maximum field of view angle of the optical lens, and the maximum clear aperture of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, the optical lens can have a smaller front aperture, reduce the volume of the optical lens, and at the same time can also achieve the long focal length characteristic of the optical lens, and thus realize long-distance detection of the optical lens.

[0108] In an exemplary embodiment, the overall optical length TTL of the optical lens and the back focal length BFL of the optical lens may satisfy: BFL / TTL ≤ 0.2. In an example, 0.05 ≤ BFL / TTL ≤ 0.15. By reasonably configuring the ratio of the back focal length to the overall optical length of the optical lens, the optical lens can meet the special requirements of a short back focal length, reduce the overall optical length of the optical lens while reserving space for the installation and focusing of optical elements, and achieve miniaturization of the optical lens.

[0109] In an exemplary embodiment, the overall focal length value F of the optical lens and the entrance pupil diameter ENPD of the optical lens may satisfy: F / ENPD ≤ 1.4. By reasonably configuring the ratio of the overall focal length value to the entrance pupil diameter of the optical lens, it is beneficial to achieve a large aperture of the optical lens, improve the light transmission amount of the optical lens; at the same time, it is also beneficial to increase the entrance pupil aperture of the optical lens and improve the relative illumination of the optical lens. Further, when F / ENPD ≤ 1, a larger entrance pupil aperture can be provided, resulting in a larger light transmission amount and a higher relative illumination.

[0110] In an exemplary embodiment, the overall focal length value F of the optical lens and the image height H corresponding to the maximum field of view angle of the optical lens may satisfy: 1 ≤ F / H ≤ 2.4. Reasonably configuring the ratio of the overall focal length value of the optical lens to the image height corresponding to the maximum field of view angle of the optical lens is beneficial to improving the resolution ability of the optical lens. Further, when 1.5 ≤ F / H ≤ 2, it can make the overall focal length value of the optical lens closer to the image height corresponding to the maximum field of view angle of the optical lens, thereby providing a higher resolution ability of the optical lens.

[0111] In an exemplary embodiment, the overall optical length TTL of the optical lens and the overall focal length value F of the optical lens may satisfy: TTL / F ≤ 5.5. In the example, 2.6 ≤ TTL / F ≤ 4.5. When the ratio of the overall optical length of the optical lens to the overall focal length value is small, the sensitivity of the optical lens is high, while when the ratio of the overall optical length of the optical lens to the overall focal length value is large, it is beneficial to achieve high resolution and low sensitivity of the optical lens. Therefore, by constraining the ratio of the overall optical length of the optical lens to the overall focal length value within a certain range, it is possible to reduce the overall optical length of the optical lens while the optical lens has high resolution and low sensitivity, realizing the miniaturization and low cost of the optical lens.

[0112] In an exemplary embodiment, the focal length value F1 of the first lens and the overall focal length value F of the optical lens may satisfy: F1 / F ≥ 1.5. In the example, 2 ≤ F1 / F ≤ 13. Reasonably configuring the focal length value of the first lens can make the focal length value of the first lens positive, which is beneficial to converging light; at the same time, it can also make the first lens a long focal length lens, allowing more light to enter the system while enabling the light to smoothly transition to the rear system, achieving a high light throughput of the optical lens.

[0113] In an exemplary embodiment, the focal length value F2 of the second lens and the overall focal length value F of the optical lens may satisfy: -6 ≤ F2 / F ≤ -0.5. Reasonably configuring the focal length value of the second lens is beneficial to appropriately diffusing light, increasing the aperture of the diaphragm, and further increasing the light passing aperture of the optical lens, achieving a high light throughput of the optical lens. Further, when -5 ≤ F2 / F ≤ -1.2, the light can be better diffused and the over-diffusion can be avoided, effectively increasing the light passing aperture of the optical lens and achieving a high light throughput of the optical lens.

[0114] In an exemplary embodiment, the focal length value F4 of the fourth lens and the overall focal length value F of the optical lens may satisfy: 1 ≤ F4 / F ≤ 8. In the example, 1.8 ≤ F4 / F ≤ 6. Reasonably configuring the focal length value of the fourth lens is beneficial to the balance of various aberrations, and thus achieving high resolution of the optical lens.

[0115] In an exemplary embodiment, the focal length value F5 of the fifth lens and the overall focal length value F of the optical lens may satisfy: 1 ≤ F5 / F ≤ 8. In an example, 1.6 ≤ F5 / F ≤ 5. Reasonably configuring the focal length value of the fifth lens can further converge light rays, which is beneficial to the smooth transition of the light ray trend of the entire system, reduce the sensitivity of the optical lens, and at the same time is beneficial to the balance of various aberrations and improve the resolution ability of the optical lens.

[0116] In an exemplary embodiment, the curvature radius R13 of the first side surface of the seventh lens and the curvature radius R14 of the second side surface of the seventh lens may satisfy: 0.5 ≤ R13 / R14 ≤ 1.5. Reasonably configuring the ratio of the curvature radii of the first side surface and the second side surface of the seventh lens can make the curvatures of the two side surfaces of the seventh lens similar, and its shape is close to a concentric circle, which is beneficial to the smooth transition of the light rays with a large front aperture, reduce the back focal length of the optical lens to a certain extent, and further reduce the overall optical length of the optical lens. Further, when 0.6 ≤ R13 / R14 ≤ 1.3, the curvatures of the two side surfaces of the seventh lens can be made closer, which is more beneficial to the smooth transition of the light rays with a large front aperture, reduce the back focal length of the optical lens, and further reduce the overall optical length of the optical lens.

[0117] In an exemplary embodiment, the curvature radius R11 of the first side surface of the sixth lens and the curvature radius R12 of the second side surface of the sixth lens may satisfy: 0.3 ≤ R11 / R12 ≤ 1.5. Reasonably configuring the ratio of the curvature radii of the first side surface and the second side surface of the sixth lens can make the curvatures of the two side surfaces of the sixth lens similar, and its shape is close to a concentric circle, which is beneficial to the smooth transition of the light rays with a large front aperture, reduce the back focal length of the optical lens to a certain extent, and further reduce the overall optical length of the optical lens. Further, when 0.5 ≤ R11 / R12 ≤ 1.3, the curvatures of the two side surfaces of the sixth lens can be made closer, which is more beneficial to the smooth transition of the light rays, reduce the back focal length of the optical lens, and further reduce the overall optical length of the optical lens.

[0118] In an exemplary embodiment, the air gap d34 between the third lens and the fourth lens on the optical axis and the overall focal length value F of the optical lens may satisfy: d34 / F ≥ 0.08. Reasonably configuring the air gap between the third lens and the fourth lens on the optical axis can ensure that the light rays have sufficient space to diverge, which is beneficial to increasing the light passing aperture of the optical lens and improving the light passing amount of the optical lens. Further, when 0.1 ≤ d34 / F ≤ 0.8, while effectively diffusing the light rays, light loss can be avoided, which is beneficial to increasing the light passing aperture of the optical lens and improving the light passing amount of the optical lens.

[0119] In an exemplary embodiment, the refractive index Nd5 of the fifth lens and the overall optical power of the optical lens Satisfy: In an example, By reasonably configuring the ratio of the refractive index of the fifth lens to the overall optical power of the optical lens, it is possible to select a material with a higher refractive index for the fifth lens, which is beneficial for converging light and improving the resolution of the optical lens.

[0120] In an exemplary embodiment, the combined optical power of the fourth lens and the fifth lens and the overall optical power of the optical lens can satisfy: By reasonably configuring the ratio of the combined optical power of the fourth lens and the fifth lens to the overall optical power of the optical lens, it is possible to make the combined optical power of the fourth lens and the fifth lens relatively large, thereby effectively converging light, correcting system aberrations, and improving the resolution of the optical lens. Further, when , it is possible to make the combined optical power of the fourth lens and the fifth lens relatively large, effectively converge light, correct system aberrations, and improve the resolution of the optical lens. At the same time, it can also avoid the problem that the combined optical power of the fourth lens and the fifth lens is too small, resulting in light divergence and being unfavorable for the rear system to receive light.

[0121] In an exemplary embodiment, the radius of curvature R1 of the first side surface of the first lens and the overall focal length value F of the optical lens can satisfy: R1 / F ≤ 4. In the example, 1.3 ≤ R1 / F ≤ 3. By reasonably configuring the radius of curvature of the first side surface of the first lens, it is possible to make the first side surface of the first lens a convex surface and have a relatively small radius of curvature, which is beneficial for shrinking the front-end light, reducing the height of the light entering the first side surface of the second lens, and decreasing the front aperture of the optical lens.

[0122] In an exemplary embodiment, the radius of curvature R3 of the first side surface of the second lens and the overall focal length value F of the optical lens can satisfy: R3 / F ≤ -0.5. In the example, -3 ≤ R3 / F ≤ -1. By reasonably configuring the radius of curvature of the first side surface of the second lens, it is possible to make the first side surface of the second lens have a relatively small negative radius of curvature, which is beneficial for appropriately diffusing light, expanding the aperture of the diaphragm, increasing the light passing aperture of the optical lens, and achieving a high light passing amount of the optical lens.

[0123] In an exemplary embodiment, the radius of curvature R11 of the first side surface of the sixth lens and the overall focal length value F of the optical lens can satisfy: R11 / F ≤ 2. In the example, 0.6 ≤ R11 / F ≤ 1.4. By reasonably configuring the radius of curvature of the first side surface of the sixth lens, it is possible to make the first side surface of the sixth lens have a relatively small radius of curvature, which is beneficial for the light to smoothly transition to the rear system and, to a certain extent, reduce the back focal length of the optical lens.

[0124] In an exemplary embodiment, the radius of curvature R12 of the second side surface of the sixth lens and the overall focal length value F of the optical lens may satisfy: R12 / F ≤ 2.4. In an example, 0.6 ≤ R12 / F ≤ 2. Reasonably configuring the radius of curvature of the second side surface of the sixth lens can enable the second side surface of the sixth lens to have a relatively small radius of curvature, which is beneficial for the smooth transition of light to the rear system and can reduce the back focal length of the optical lens to a certain extent.

[0125] In an exemplary embodiment, the radius of curvature R13 of the first side surface of the seventh lens and the overall focal length value F of the optical lens may satisfy: R13 / F ≤ 2. Reasonably configuring the radius of curvature of the first side surface of the seventh lens can enable the first side surface of the seventh lens to have a relatively small radius of curvature, which is beneficial for the convergence of light to the image plane and can effectively correct aberration, improving the imaging quality of the optical lens. Further, when 0.4 ≤ R13 / F ≤ 1.5, controlling the radius of curvature of the first side surface of the seventh lens to be relatively small and ensuring that the radius of curvature of the first side surface of the seventh lens is not too small to cause rapid deflection of light and affect the imaging of the rear end is beneficial for the convergence of light to the image plane, effectively correcting aberration, and improving the imaging quality of the optical lens.

[0126] In an exemplary embodiment, the radius of curvature R14 of the second side surface of the seventh lens and the overall focal length value F of the optical lens may satisfy: R14 / F ≤ 2. Reasonably configuring the radius of curvature of the second side surface of the seventh lens can enable the second side surface of the seventh lens to have a relatively small radius of curvature, which is beneficial for the convergence of light to the image plane and can effectively correct aberration, improving the imaging quality of the optical lens. Further, when 0.5 ≤ R14 / F ≤ 1.5, controlling the radius of curvature of the second side surface of the seventh lens to be relatively small and ensuring that the radius of curvature of the second side surface of the seventh lens is not too small to cause rapid deflection of light and affect the imaging of the rear end is beneficial for the convergence of light to the image plane, effectively correcting aberration, and improving the imaging quality of the optical lens.

[0127] In an exemplary embodiment, the maximum clear aperture D7 of the first side surface of the fourth lens corresponding to the maximum field of view angle of the optical lens, the maximum clear aperture D8 of the second side surface of the fourth lens corresponding to the maximum field of view angle of the optical lens, and the overall focal length value F of the optical lens may satisfy: (D7 + D8) / 2 / F ≥ 1.1. By controlling the above conditional expression, the aperture of the fourth lens can be increased, thereby increasing the clear aperture of the optical lens and achieving a high light throughput of the optical lens. Further, when 1.5 ≤ (D7 + D8) / 2 / F ≤ 2.5, while effectively increasing the aperture of the fourth lens, it is possible to avoid the aperture of the fourth lens being too large, thus avoiding the problem that is not conducive to the rear system receiving light caused by the too large aperture of the fourth lens, and achieving a high light throughput of the optical lens.

[0128] In an exemplary embodiment, the sagittal height SAG3 of the first side surface of the second lens and the maximum clear aperture D3 of the first side surface of the second lens corresponding to the maximum field of view angle of the optical lens may satisfy: -0.8 ≤ SAG3 / (D3 / 2) ≤ -0.1. Reasonably configuring the ratio of the sagittal height of the first side surface of the second lens to the maximum clear aperture of the first side surface of the second lens corresponding to the maximum field of view angle of the optical lens can ensure that the second lens diverges light, enables the peripheral light to transition smoothly, reduces the sensitivity of the optical lens, and increases the overall light transmission amount of the optical lens. Further, when -0.5 ≤ SAG3 / (D3 / 2) ≤ -0.12, while ensuring that the second lens diverges light, the peripheral light transitions smoothly, reduces the sensitivity of the optical lens, and increases the overall light transmission amount of the optical lens, it can effectively prevent the aperture of the second lens from being too large, thereby avoiding the problem of affecting the light reception of the subsequent system caused by the too large aperture of the second lens.

[0129] In an exemplary embodiment, the maximum field of view angle FOV of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, and the overall focal length value F of the optical lens may satisfy: (FOV × F) / H ≥ 50°. Reasonably controlling the mutual relationship among the maximum field of view angle of the optical lens, the image height corresponding to the maximum field of view angle of the optical lens, and the overall focal length value of the optical lens can achieve the long focal length characteristic while ensuring that the optical lens has a sufficient field of view angle, and further achieve the long-distance detection of the optical lens. Further, when 55° ≤ (FOV × F) / H ≤ 65°, while achieving the long focal length characteristic and the long-distance detection of the optical lens under the condition that the optical lens has a sufficient field of view angle, it can ensure that light effectively enters the image plane and better matches with the rear-end chip.

[0130] In an exemplary embodiment, the overall focal length value F of the optical lens, the curvature radius R3 of the first side surface of the second lens, and the curvature radius R4 of the second side surface of the second lens may satisfy: 0.3 ≤ |F / R3| + |F / R4| ≤ 1.5. In an example, 0.4 ≤ |F / R3| + |F / R4| ≤ 1.3. Reasonably controlling the mutual relationship among the overall focal length value of the optical lens, the curvature radius of the first side surface of the second lens, and the curvature radius of the second side surface of the second lens can ensure that the second lens diverges light, is beneficial to increasing the clear aperture of the optical lens, and can also effectively correct aberration and improve the imaging quality of the optical lens.

[0131] In an exemplary embodiment, the focal length value F4 of the fourth lens and the focal length value F5 of the fifth lens may satisfy: |F4 / F5| ≤ 2.5. Reasonably configuring the ratio of the focal length value of the fourth lens to the focal length value of the fifth lens can make the focal length values of these two lenses relatively close, which is beneficial to the smooth transition of light and improves the image quality of the optical lens. Further, when 0.5 ≤ |F4 / F5| ≤ 2.2, when the focal length of the fourth lens is relatively close to the focal length of the fifth lens, it can effectively avoid the focal length of one of the lenses being too large or too small, and avoid the system instability caused by the rapid change of light due to the focal length of one of the lenses being too large or too small, making the fourth lens and the fifth lens more uniform, which is beneficial to the smooth transition of light and improves the image quality of the optical lens.

[0132] In an exemplary embodiment, the maximum clear aperture D8 of the second side of the fourth lens corresponding to the maximum field of view angle of the optical lens and the maximum clear aperture D14 of the second side of the seventh lens corresponding to the maximum field of view angle of the optical lens may satisfy: D14 / D8 ≤ 0.8. Reasonably configuring the ratio of the maximum clear apertures of the second sides of the seventh lens and the fourth lens can make the maximum clear aperture of the fourth lens larger than the maximum clear aperture of the seventh lens, ensuring that the optical lens has a large entrance pupil diameter, which is beneficial to improving the light transmission amount of the optical lens. Further, when D14 / D8 ≤ 0.6, it can make the difference between the maximum clear aperture of the fourth lens and the maximum clear aperture of the seventh lens larger, which can better ensure that the optical lens has a large entrance pupil diameter and is beneficial to improving the light transmission amount of the optical lens.

[0133] The optical lens according to the above embodiment of the present application may employ multiple lenses, such as the seven lenses described above. By reasonably distributing the optical parameters of each lens, miniaturization, small aperture, long focal length, short back focal length, high light transmission amount, high resolution, and low sensitivity of the optical lens are achieved, and it can be well matched with, for example, in-vehicle chips without generating vignetting. The optical lens has good temperature performance, small change in imaging effect at high and low temperatures, and stable image quality. Therefore, the optical lens according to the above embodiment of the present application can better meet the requirements of, for example, in-vehicle applications.

[0134] Those skilled in the art should understand that the total optical length TTL of the optical lens used above refers to the axial distance from the first side of the first lens to the imaging surface or the object surface; the back focal length BFL of the optical lens refers to the axial distance from the second side of the seventh lens to the imaging surface or the object surface; and the maximum field of view angle FOV of the optical lens is related to the image height H, which refers to the field of view angle corresponding to the image height H.

[0135] However, those skilled in the art should understand that, without departing from the technical solution claimed in this application, the number of lenses constituting the optical lens can be changed to obtain the various results and advantages described in this specification. For example, although seven lenses are described as an example in the embodiments, the optical lens is not limited to including seven lenses. If necessary, the optical lens may also include other numbers of lenses.

[0136] The following further describes specific embodiments of the optical lens applicable to the above embodiments with reference to the accompanying drawings.

[0137] Example 1

[0138] The following refers to Figure 1 Describe the optical lens according to Embodiment 1 of this application.

[0139] As Figure 1 shown, the optical lens sequentially includes, along the optical axis from the first side to the second side: 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. The aperture stop STO can be disposed between the third lens L3 and the fourth lens L4. The seventh lens L7 is an aspherical lens.

[0140] The first lens L1 has a positive optical power, its first side S1 is convex, and its second side S2 is concave.

[0141] The second lens L2 has a negative optical power, its first side S3 is concave, and its second side S4 is convex.

[0142] The third lens L3 has a negative optical power, its first side S5 is concave, and its second side S6 is concave.

[0143] The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex.

[0144] The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is concave.

[0145] The sixth lens L6 has a negative optical power, its first side S12 is convex, and its second side S13 is concave.

[0146] The seventh lens L7 has a positive optical power, its first side S14 is convex, and its second side S15 is concave.

[0147] The second side of the optical lens is provided with an image plane IMA, and a first filter L8 and a second filter L9 are arranged between the seventh lens L7 and the image plane IMA. The first filter L8 has a first side S16 and a second side S17. The second filter L9 has a first side S18 and a second side S19. When IMA is the imaging plane, the light from the object sequentially passes through each surface S1 to S19 and finally forms an image on IMA. When IMA is the image source plane, the light from IMA sequentially passes through each surface S19 to S1 and finally projects onto the object.

[0148] Table 1 shows the basic parameter table of the optical lens of Embodiment 1, where the units of the radius of curvature and the thickness / distance are both millimeters (mm).

[0149]

[0150] Table 1

[0151] In Embodiment 1, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical surfaces, and the surface shape x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:

[0152]

[0153] Among them, x is the distance sagitta from the vertex of the aspherical surface when the aspherical surface is at a position with a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (that is, the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0154] Face number k A4 A6 A8 A10 A12 S14 0.1235 -1.7130E-05 -1.1437E-06 4.0635E-09 3.2603E-11 -1.5180E-12 S15 0.9384 1.5082E-04 -1.1750E-06 6.1990E-08 -4.5312E-10 1.6989E-11

[0155] Table 2

[0156] Example 2

[0157] The following refers to Figure 2 Describe the optical lens according to Embodiment 2 of the present application.

[0158] As Figure 2 shown, the optical lens sequentially includes, along the optical axis from the first side to the second side: 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. The aperture stop STO can be arranged between the third lens L3 and the fourth lens L4. The seventh lens L7 is an aspherical lens.

[0159] The first lens L1 has a positive focal power. Its first side S1 is convex, and its second side S2 is concave.

[0160] The second lens L2 has a negative focal power. Its first side S3 is concave, and its second side S4 is convex.

[0161] The third lens L3 has a negative focal power. Its first side S5 is concave, and its second side S6 is convex.

[0162] The fourth lens L4 has a positive focal power. Its first side S8 is convex, and its second side S9 is convex.

[0163] The fifth lens L5 has a positive focal power. Its first side S10 is convex, and its second side S11 is concave.

[0164] The sixth lens L6 has a negative focal power. Its first side S12 is convex, and its second side S13 is concave.

[0165] The seventh lens L7 has a positive focal power. Its first side S14 is convex, and its second side S15 is concave.

[0166] An image plane IMA is provided on the second side of the optical lens. A first filter L8 and a second filter L9 are provided between the seventh lens L7 and the image plane IMA. The first filter L8 has a first side S16 and a second side S17. The second filter L9 has a first side S18 and a second side S19. When IMA is the imaging plane, light from the object sequentially passes through the surfaces S1 to S19 and finally forms an image on IMA. When IMA is the image source plane, light from IMA sequentially passes through the surfaces S19 to S1 and finally projects onto the object.

[0167] Table 3 shows the basic parameter table of the optical lens of Example 2, where the units of the radius of curvature and the thickness / distance are both millimeters (mm).

[0168]

[0169]

[0170] Table 3

[0171] In Example 2, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical surfaces. Table 4 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0172] Face number k A4 A6 A8 A10 A12 S14 0.0726 -1.7761E-05 -1.0441E-06 2.8882E-09 4.3249E-11 -1.7757E-12 S15 1.1162 1.4164E-04 -1.8035E-06 1.1166E-07 -2.1518E-09 2.7774E-11

[0173] Table 4

[0174] Example 3

[0175] Refer to the following Figure 3 to describe the optical lens according to Embodiment 3 of the present application.

[0176] As Figure 3 shown, the optical lens sequentially 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. The aperture stop STO can be disposed between the third lens L3 and the fourth lens L4. The seventh lens L7 is an aspherical lens.

[0177] The first lens L1 has a positive optical power, its first side S1 is convex, and its second side S2 is concave.

[0178] The second lens L2 has a negative optical power, its first side S3 is concave, and its second side S4 is convex.

[0179] The third lens L3 has a negative optical power, its first side S5 is concave, and its second side S6 is concave.

[0180] The fourth lens L4 has a positive optical power, its first side S8 is concave, and its second side S9 is convex.

[0181] The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is concave.

[0182] The sixth lens L6 has a negative optical power, its first side S12 is convex, and its second side S13 is concave.

[0183] The seventh lens L7 has a positive optical power, its first side S14 is convex, and its second side S15 is concave.

[0184] An image plane IMA is disposed on the second side of the optical lens. A first filter L8 and a second filter L9 are disposed between the seventh lens L7 and the image plane IMA. The first filter L8 has a first side S16 and a second side S17. The second filter L9 has a first side S18 and a second side S19. When IMA is the imaging plane, the light from the object sequentially passes through the surfaces S1 to S19 and finally forms an image on the IMA. When IMA is the image source plane, the light from the IMA sequentially passes through the surfaces S19 to S1 and finally projects onto the object.

[0185] Table 5 shows the basic parameter table of the optical lens of Embodiment 3, where the units of the radius of curvature and the thickness / distance are both millimeters (mm).

[0186]

[0187]

[0188] Table 5

[0189] In Embodiment 3, the first side surface S14 and the second side surface S15 of the seventh lens L7 are both aspherical surfaces. Table 6 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0190] Face number k A4 A6 A8 A10 A12 S14 0.0295 2.0091E-05 -1.0038E-06 8.9676E-09 1.1035E-10 -3.0428E-12 S15 1.3200 1.6373E-04 -6.3299E-07 9.8262E-08 -1.3525E-09 1.4075E-11

[0191] Table 6

[0192] Example 4

[0193] The following refers to Figure 4 to describe the optical lens according to Embodiment 4 of the present application.

[0194] As Figure 4 shown, the optical lens sequentially includes, along the optical axis from the first side to the second side: 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. The aperture stop STO may be disposed between the third lens L3 and the fourth lens L4. The seventh lens L7 is an aspherical lens.

[0195] The first lens L1 has a positive optical power, its first side surface S1 is a convex surface, and its second side surface S2 is a concave surface.

[0196] The second lens L2 has a negative optical power, its first side surface S3 is a concave surface, and its second side surface S4 is a convex surface.

[0197] The third lens L3 has a negative optical power, its first side surface S5 is a concave surface, and its second side surface S6 is a convex surface.

[0198] The fourth lens L4 has a positive optical power, its first side surface S8 is a concave surface, and its second side surface S9 is a convex surface.

[0199] The fifth lens L5 has a positive optical power, its first side surface S10 is a convex surface, and its second side surface S11 is a concave surface.

[0200] The sixth lens L6 has a negative optical power, its first side surface S12 is a convex surface, and its second side surface S13 is a concave surface.

[0201] The seventh lens L7 has a positive optical power, its first side surface S14 is a convex surface, and its second side surface S15 is a concave surface.

[0202] The second side of the optical lens is provided with an image plane IMA, and a first filter L8 and a second filter L9 are arranged between the seventh lens L7 and the image plane IMA. The first filter L8 has a first side S16 and a second side S17. The second filter L9 has a first side S18 and a second side S19. When IMA is the imaging plane, the light from the object sequentially passes through the surfaces S1 to S19 and finally forms an image on IMA. When IMA is the image source plane, the light from IMA sequentially passes through the surfaces S19 to S1 and finally projects onto the object.

[0203] Table 7 shows the basic parameter table of the optical lens of Embodiment 4, where the units of the radius of curvature and the thickness / distance are both millimeters (mm).

[0204]

[0205]

[0206] Table 7

[0207] In Embodiment 4, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical surfaces. Table 8 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0208] Face number k A4 A6 A8 A10 A12 S14 0.0074 1.8923E-05 -9.9836E-07 8.8140E-09 1.2101E-10 -3.2753E-12 S15 1.4177 1.5952E-04 -9.4038E-07 1.2126E-07 -1.8137E-09 1.8950E-11

[0209] Table 8

[0210] Example 5

[0211] The following refers to Figure 5 to describe the optical lens according to Embodiment 5 of the present application.

[0212] As Figure 5 shown, the optical lens sequentially includes, along the optical axis from the first side to the second side: 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. The aperture stop STO can be arranged between the third lens L3 and the fourth lens L4. The seventh lens L7 is an aspherical lens.

[0213] The first lens L1 has a positive optical power, its first side S1 is a convex surface, and its second side S2 is a concave surface.

[0214] The second lens L2 has a negative optical power, its first side S3 is a concave surface, and its second side S4 is a concave surface.

[0215] The third lens L3 has a negative optical power, its first side S5 is a concave surface, and its second side S6 is a concave surface.

[0216] The fourth lens L4 has a positive focal power, its first side S8 is convex, and its second side S9 is convex.

[0217] The fifth lens L5 has a positive focal power, its first side S10 is convex, and its second side S11 is concave.

[0218] The sixth lens L6 has a negative focal power, its first side S12 is convex, and its second side S13 is concave.

[0219] The seventh lens L7 has a positive focal power, its first side S14 is convex, and its second side S15 is concave.

[0220] An image plane IMA is provided on the second side of the optical lens, and a first filter L8 and a second filter L9 are provided between the seventh lens L7 and the image plane IMA. The first filter L8 has a first side S16 and a second side S17. The second filter L9 has a first side S18 and a second side S19. When IMA is the imaging plane, light from the object sequentially passes through the surfaces S1 to S19 and finally forms an image on IMA. When IMA is the image source plane, light from IMA sequentially passes through the surfaces S19 to S1 and finally projects onto the object.

[0221] Table 9 shows the basic parameter table of the optical lens of Embodiment 5, where the unit of the radius of curvature and the thickness / distance is millimeter (mm).

[0222]

[0223]

[0224] Table 9

[0225] In Embodiment 5, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical. Table 10 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0226] Face number k A4 A6 A8 A10 A12 S14 -0.0578 9.5060E-06 -5.9112E-07 5.9184E-09 5.3143E-11 -2.0141E-12 S15 1.3192 1.2774E-04 1.9784E-07 6.3347E-08 -1.7249E-09 1.1635E-11

[0227] Table 10

[0228] Example 6

[0229] The following refers to Figure 6 to describe the optical lens according to Embodiment 6 of the present application.

[0230] As Figure 6As shown, the optical lens sequentially includes, along the optical axis from the first side to the second side: 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. The aperture stop STO can be disposed between the third lens L3 and the fourth lens L4. The seventh lens L7 is an aspherical lens.

[0231] The first lens L1 has a positive focal power. Its first side S1 is convex, and its second side S2 is concave.

[0232] The second lens L2 has a negative focal power. Its first side S3 is concave, and its second side S4 is concave.

[0233] The third lens L3 has a negative focal power. Its first side S5 is concave, and its second side S6 is convex.

[0234] The fourth lens L4 has a positive focal power. Its first side S8 is convex, and its second side S9 is convex.

[0235] The fifth lens L5 has a positive focal power. Its first side S10 is convex, and its second side S11 is concave.

[0236] The sixth lens L6 has a negative focal power. Its first side S12 is convex, and its second side S13 is concave.

[0237] The seventh lens L7 has a positive focal power. Its first side S14 is convex, and its second side S15 is concave.

[0238] An image plane IMA is disposed on the second side of the optical lens. A first filter L8 and a second filter L9 are disposed between the seventh lens L7 and the image plane IMA. The first filter L8 has a first side S16 and a second side S17. The second filter L9 has a first side S18 and a second side S19. When IMA is the imaging plane, light from the object sequentially passes through the surfaces S1 to S19 and finally forms an image on IMA. When IMA is the image source plane, light from IMA sequentially passes through the surfaces S19 to S1 and finally projects onto the object.

[0239] Table 11 shows the basic parameter table of the optical lens of Example 6, where the units of the radius of curvature and the thickness / distance are both millimeters (mm).

[0240]

[0241] Table 11

[0242] In Example 6, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical. Table 12 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A for each of the aspherical surfaces S14, S15 in Example 6.10 and A 12 。

[0243] Face number k A4 A6 A8 A10 A12 S14 -0.0111 2.9067E-06 -5.9625E-07 2.2785E-09 5.5158E-11 -1.8351E-12 S15 1.2980 1.6517E-04 -3.0451E-06 1.5257E-07 -3.2983E-09 2.2009E-11

[0244] Table 12

[0245] Example 7

[0246] The following refers to Figure 7 the optical lens according to Embodiment 7 of the present application for description.

[0247] As Figure 7 shown, the optical lens sequentially 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. The aperture stop STO may be disposed between the third lens L3 and the fourth lens L4. The seventh lens L7 is an aspherical lens.

[0248] The first lens L1 has a positive optical power, its first side S1 is a convex surface, and its second side S2 is a concave surface.

[0249] The second lens L2 has a negative optical power, its first side S3 is a concave surface, and its second side S4 is a concave surface.

[0250] The third lens L3 has a negative optical power, its first side S5 is a concave surface, and its second side S6 is a convex surface.

[0251] The fourth lens L4 has a positive optical power, its first side S8 is a concave surface, and its second side S9 is a convex surface.

[0252] The fifth lens L5 has a positive optical power, its first side S10 is a convex surface, and its second side S11 is a concave surface.

[0253] The sixth lens L6 has a positive optical power, its first side S12 is a convex surface, and its second side S13 is a concave surface.

[0254] The seventh lens L7 has a positive optical power, its first side S14 is a convex surface, and its second side S15 is a concave surface.

[0255] An image plane IMA is disposed on the second side of the optical lens. A first filter L8 and a second filter L9 are disposed between the seventh lens L7 and the image plane IMA. The first filter L8 has a first side S16 and a second side S17. The second filter L9 has a first side S18 and a second side S19. When IMA is the imaging plane, the light from the object sequentially passes through the surfaces S1 to S19 and finally forms an image on the IMA. When IMA is the image source plane, the light from the IMA sequentially passes through the surfaces S19 to S1 and finally projects onto the object.

[0256] Table 13 shows the basic parameter table of the optical lens of Embodiment 7, where the units of the radius of curvature and the thickness / distance are both millimeters (mm).

[0257]

[0258] Table 13

[0259] In Embodiment 7, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical surfaces. Table 14 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0260] Face number k A4 A6 A8 A10 A12 S14 -0.1756 4.4566E-05 1.6175E-07 -2.9295E-10 5.4865E-11 -2.5035E-13 S15 3.0355 1.8689E-04 -4.9463E-06 3.1438E-07 -6.9805E-09 8.3438E-11

[0261] Table 14

[0262] Example 8

[0263] The following will refer to Figure 8 to describe the optical lens according to Embodiment 8 of the present application.

[0264] As Figure 8 shown, the optical lens sequentially 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. The aperture stop STO may be disposed between the third lens L3 and the fourth lens L4. The seventh lens L7 is an aspherical lens.

[0265] The first lens L1 has a positive optical power, its first side S1 is a convex surface, and its second side S2 is a concave surface.

[0266] The second lens L2 has a negative optical power, its first side S3 is a concave surface, and its second side S4 is a concave surface.

[0267] The third lens L3 has a negative optical power, its first side S5 is a concave surface, and its second side S6 is a convex surface.

[0268] The fourth lens L4 has a positive optical power, its first side S8 is a convex surface, and its second side S9 is a convex surface.

[0269] The fifth lens L5 has a positive optical power, its first side S10 is a convex surface, and its second side S11 is a concave surface.

[0270] The sixth lens L6 has a positive optical power, its first side S12 is a convex surface, and its second side S13 is a concave surface.

[0271] The seventh lens L7 has a positive optical power, its first side S14 is a convex surface, and its second side S15 is a concave surface.

[0272] The second side of the optical lens is provided with an image plane IMA, and a first filter L8 and a second filter L9 are arranged between the seventh lens L7 and the image plane IMA. The first filter L8 has a first side S16 and a second side S17. The second filter L9 has a first side S18 and a second side S19. When IMA is the imaging plane, the light from the object sequentially passes through the surfaces S1 to S19 and finally forms an image on the IMA. When IMA is the image source plane, the light from the IMA sequentially passes through the surfaces S19 to S1 and finally projects onto the object.

[0273] Table 15 shows the basic parameter table of the optical lens of Example 8, where the units of the radius of curvature and the thickness / distance are both millimeters (mm).

[0274]

[0275] Table 15

[0276] In Example 8, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical. Table 16 gives the conic coefficient k and the high-order term coefficients A4, A6, A8, A 10 and A 12 .

[0277] Face number k A4 A6 A8 A10 A12 S14 -0.7026 2.5786E-05 3.7957E-07 -3.4961E-09 3.5667E-11 -1.6707E-13 S15 -11.1730 5.3395E-04 -1.0135E-05 4.5720E-07 -9.0288E-09 8.2941E-11

[0278] Table 16

[0279] Example 9

[0280] The following refers to Figure 9 Describe the optical lens according to Embodiment 9 of the present application.

[0281] As Figure 9 shown, the optical lens sequentially includes, along the optical axis from the first side to the second side: 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. The aperture stop STO can be arranged between the third lens L3 and the fourth lens L4. The seventh lens L7 is an aspherical lens.

[0282] The first lens L1 has a positive optical power, its first side S1 is a convex surface, and its second side S2 is a concave surface.

[0283] The second lens L2 has a negative optical power, its first side S3 is a concave surface, and its second side S4 is a concave surface.

[0284] The third lens L3 has a negative optical power, its first side S5 is a concave surface, and its second side S6 is a concave surface.

[0285] The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex.

[0286] The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is concave.

[0287] The sixth lens L6 has a positive optical power, its first side S12 is convex, and its second side S13 is concave.

[0288] The seventh lens L7 has a positive optical power, its first side S14 is convex, and its second side S15 is concave.

[0289] An image plane IMA is provided on the second side of the optical lens, and a first filter L8 and a second filter L9 are provided between the seventh lens L7 and the image plane IMA. The first filter L8 has a first side S16 and a second side S17. The second filter L9 has a first side S18 and a second side S19. When IMA is the imaging plane, light from the object sequentially passes through the surfaces S1 to S19 and finally forms an image on the IMA. When IMA is the image source plane, light from the IMA sequentially passes through the surfaces S19 to S1 and finally projects onto the object.

[0290] Table 17 shows the basic parameter table of the optical lens of Example 9, where the unit of the radius of curvature and the thickness / distance is millimeter (mm).

[0291]

[0292] Table 17

[0293] In Example 9, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical. Table 18 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0294]

[0295]

[0296] Table 18

[0297] Example 10

[0298] The following refers to Figure 10 Describe the optical lens according to Embodiment 10 of the present application.

[0299] As Figure 10As shown, the optical lens sequentially includes, along the optical axis from the first side to the second side: 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. The aperture stop STO can be disposed between the third lens L3 and the fourth lens L4. The seventh lens L7 is an aspherical lens.

[0300] The first lens L1 has a positive focal power. Its first side S1 is a convex surface, and its second side S2 is a concave surface.

[0301] The second lens L2 has a negative focal power. Its first side S3 is a concave surface, and its second side S4 is a convex surface.

[0302] The third lens L3 has a negative focal power. Its first side S5 is a concave surface, and its second side S6 is a convex surface.

[0303] The fourth lens L4 has a positive focal power. Its first side S8 is a convex surface, and its second side S9 is a convex surface.

[0304] The fifth lens L5 has a positive focal power. Its first side S10 is a convex surface, and its second side S11 is a concave surface.

[0305] The sixth lens L6 has a positive focal power. Its first side S12 is a convex surface, and its second side S13 is a concave surface.

[0306] The seventh lens L7 has a positive focal power. Its first side S14 is a convex surface, and its second side S15 is a concave surface.

[0307] An image plane IMA is disposed on the second side of the optical lens. A first filter L8 and a second filter L9 are disposed between the seventh lens L7 and the image plane IMA. The first filter L8 has a first side S16 and a second side S17. The second filter L9 has a first side S18 and a second side S19. When IMA is the imaging plane, the light from the object sequentially passes through the surfaces S1 to S19 and finally forms an image on the IMA. When IMA is the image source plane, the light from the IMA sequentially passes through the surfaces S19 to S1 and finally projects onto the object.

[0308] Table 19 shows the basic parameter table of the optical lens of Example 10, where the unit of the radius of curvature and the thickness / distance is millimeter (mm).

[0309]

[0310] Table 19

[0311] In Example 10, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical surfaces. Table 20 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A for each of the aspherical surfaces S14, S15 in Example 10.10 and A 12 。

[0312] Face number k A4 A6 A8 A10 A12 S14 -0.9157 -4.3229E-06 9.7418E-07 -2.6229E-08 3.1129E-10 -1.3176E-12 S15 0.0638 4.0860E-04 -2.6154E-05 2.1166E-06 -7.0932E-08 1.0328E-09

[0313] Table 20

[0314] Example 11

[0315] The following is a reference to Figure 11 describe the optical lens according to Embodiment 11 of the present application.

[0316] As Figure 11 shown, the optical lens sequentially 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. The aperture stop STO can be disposed between the third lens L3 and the fourth lens L4. The seventh lens L7 is an aspherical lens.

[0317] The first lens L1 has a positive optical power, its first side S1 is convex, and its second side S2 is concave.

[0318] The second lens L2 has a negative optical power, its first side S3 is concave, and its second side S4 is convex.

[0319] The third lens L3 has a negative optical power, its first side S5 is concave, and its second side S6 is concave.

[0320] The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex.

[0321] The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is concave.

[0322] The sixth lens L6 has a positive optical power, its first side S12 is convex, and its second side S13 is concave.

[0323] The seventh lens L7 has a positive optical power, its first side S14 is convex, and its second side S15 is concave.

[0324] An image plane IMA is provided on the second side of the optical lens. A first filter L8 and a second filter L9 are provided between the seventh lens L7 and the image plane IMA. The first filter L8 has a first side S16 and a second side S17. The second filter L9 has a first side S18 and a second side S19. When IMA is the imaging plane, the light from the object sequentially passes through the surfaces S1 to S19 and finally forms an image on IMA. When IMA is the image source plane, the light from IMA sequentially passes through the surfaces S19 to S1 and finally projects onto the object.

[0325] Table 21 shows the basic parameter table of the optical lens of Example 11, where the unit of the radius of curvature and the thickness / distance is millimeter (mm).

[0326]

[0327]

[0328] Table 21

[0329] In Example 11, the first side S14 and the second side S15 of the seventh lens L7 are both aspherical surfaces. Table 22 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0330] Face number k A4 A6 A8 A10 A12 S14 -0.4665 2.4086E-05 5.5129E-07 -8.3408E-09 8.5935E-11 -3.9451E-13 S15 0.7540 3.4075E-04 -1.4788E-05 8.7701E-07 -2.0428E-08 2.0583E-10

[0331] Table 22

[0332] Example 12

[0333] The following refers to Figure 12 to describe the optical lens according to Example 12 of the present application.

[0334] As Figure 12 shown, the optical lens sequentially includes, along the optical axis from the first side to the second side: 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. The aperture stop STO may be disposed between the third lens L3 and the fourth lens L4. The seventh lens L7 is an aspherical lens.

[0335] The first lens L1 has a positive optical power, its first side S1 is a convex surface, and its second side S2 is a concave surface.

[0336] The second lens L2 has a negative optical power, its first side S3 is a concave surface, and its second side S4 is a concave surface.

[0337] The third lens L3 has a negative optical power, its first side S5 is a concave surface, and its second side S6 is a convex surface.

[0338] The fourth lens L4 has a positive optical power, its first side S8 is a concave surface, and its second side S9 is a convex surface.

[0339] The fifth lens L5 has a positive optical power, its first side S10 is a convex surface, and its second side S11 is a convex surface.

[0340] The sixth lens L6 has a positive optical power, its first side S12 is a convex surface, and its second side S13 is a concave surface.

[0341] The seventh lens L7 has a positive optical power, its first side S14 is convex, and its second side S15 is concave.

[0342] An image plane IMA is provided on the second side of the optical lens. A first filter L8 and a second filter L9 are provided between the seventh lens L7 and the image plane IMA. The first filter L8 has a first side S16 and a second side S17. The second filter L9 has a first side S18 and a second side S19. When IMA is the imaging plane, light from the object sequentially passes through the surfaces S1 to S19 and finally forms an image on IMA. When IMA is the image source plane, light from IMA sequentially passes through the surfaces S19 to S1 and finally projects onto the object.

[0343] Table 23 shows the basic parameter table of the optical lens of Embodiment 12, where the units of the radius of curvature and the thickness / distance are both millimeters (mm).

[0344]

[0345]

[0346] Table 23

[0347] In Embodiment 12, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical surfaces. Table 24 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0348] Face number k A4 A6 A8 A10 A12 S14 -0.5674 5.2737E-05 1.6347E-07 2.2783E-09 3.7049E-11 -2.9567E-14 S15 1.2983 1.3150E-04 -5.9031E-07 2.1748E-07 -6.1953E-09 9.6166E-11

[0349] Table 24

[0350] Example 13

[0351] The following refers to Figure 13 Describe the optical lens according to Embodiment 13 of the present application.

[0352] As Figure 13 shown, the optical lens sequentially includes, along the optical axis from the first side to the second side: 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. The stop STO can be provided between the third lens L3 and the fourth lens L4. The seventh lens L7 is an aspherical lens.

[0353] The first lens L1 has a positive optical power, its first side S1 is convex, and its second side S2 is concave.

[0354] The second lens L2 has a negative optical power, its first side S3 is concave, and its second side S4 is concave.

[0355] The third lens L3 has a negative optical power, its first side S5 is concave, and its second side S6 is convex.

[0356] The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex.

[0357] The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is concave.

[0358] The sixth lens L6 has a positive optical power, its first side S12 is convex, and its second side S13 is concave.

[0359] The seventh lens L7 has a positive optical power, its first side S14 is convex, and its second side S15 is concave.

[0360] An image plane IMA is provided on the second side of the optical lens. A first filter L8 and a second filter L9 are provided between the seventh lens L7 and the image plane IMA. The first filter L8 has a first side S16 and a second side S17. The second filter L9 has a first side S18 and a second side S19. When IMA is the imaging plane, the light from the object sequentially passes through the surfaces S1 to S19 and finally forms an image on IMA. When IMA is the image source plane, the light from IMA sequentially passes through the surfaces S19 to S1 and finally projects onto the object.

[0361] Table 25 shows the basic parameter table of the optical lens of Embodiment 13, where the units of the radius of curvature and the thickness / distance are both millimeters (mm).

[0362]

[0363]

[0364] Table 25

[0365] In Embodiment 13, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical. Table 26 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0366] Face number k A4 A6 A8 A10 A12 S14 -0.7400 4.7910E-05 2.1825E-07 4.0355E-09 -1.6597E-11 7.5517E-14 S15 2.8736 1.2098E-04 -6.1051E-06 5.3719E-07 -1.5484E-08 1.8222E-10

[0367] Table 26

[0368] Example 14

[0369] The following is a reference to Figure 14 Describe the optical lens according to Embodiment 14 of the present application.

[0370] As Figure 14 shown, the optical lens sequentially includes, along the optical axis from the first side to the second side: 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. The aperture stop STO can be disposed between the third lens L3 and the fourth lens L4. The seventh lens L7 is an aspherical lens.

[0371] The first lens L1 has a positive focal power, its first side S1 is a convex surface, and its second side S2 is a concave surface.

[0372] The second lens L2 has a negative focal power, its first side S3 is a concave surface, and its second side S4 is a concave surface.

[0373] The third lens L3 has a negative focal power, its first side S5 is a concave surface, and its second side S6 is a convex surface.

[0374] The fourth lens L4 has a positive focal power, its first side S8 is a concave surface, and its second side S9 is a convex surface.

[0375] The fifth lens L5 has a positive focal power, its first side S10 is a convex surface, and its second side S11 is a convex surface.

[0376] The sixth lens L6 has a positive focal power, its first side S12 is a convex surface, and its second side S13 is a concave surface.

[0377] The seventh lens L7 has a positive focal power, its first side S14 is a convex surface, and its second side S15 is a concave surface.

[0378] An image plane IMA is disposed on the second side of the optical lens. A first filter L8 and a second filter L9 are disposed between the seventh lens L7 and the image plane IMA. The first filter L8 has a first side S16 and a second side S17. The second filter L9 has a first side S18 and a second side S19. When IMA is the imaging plane, the light from the object sequentially passes through the surfaces S1 to S19 and finally forms an image on IMA. When IMA is the image source plane, the light from IMA sequentially passes through the surfaces S19 to S1 and finally projects onto the object.

[0379] Table 27 shows the basic parameter table of the optical lens of Embodiment 14, where the units of the radius of curvature and the thickness / distance are both millimeters (mm).

[0380]

[0381] Table 27

[0382] In Embodiment 14, the first side surface S14 and the second side surface S15 of the seventh lens L7 are both aspherical surfaces. Table 28 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0383] Face number k A4 A6 A8 A10 A12 S14 -0.3720 6.5540E-05 -4.8778E-07 1.1013E-08 -4.3650E-11 1.0042E-13 S15 1.4244 1.9301E-04 -5.2210E-06 3.5643E-07 -7.6817E-09 8.5811E-11

[0384] Table 28

[0385] Example 15

[0386] The following refers to Figure 15 to describe the optical lens according to Embodiment 15 of the present application.

[0387] As Figure 15 shown, the optical lens sequentially includes, along the optical axis from the first side to the second side: 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. The aperture stop STO may be disposed between the third lens L3 and the fourth lens L4. The seventh lens L7 is an aspherical lens.

[0388] The first lens L1 has a positive optical power, its first side surface S1 is convex, and its second side surface S2 is concave.

[0389] The second lens L2 has a negative optical power, its first side surface S3 is concave, and its second side surface S4 is concave.

[0390] The third lens L3 has a negative optical power, its first side surface S5 is concave, and its second side surface S6 is concave.

[0391] The fourth lens L4 has a positive optical power, its first side surface S8 is concave, and its second side surface S9 is convex.

[0392] The fifth lens L5 has a positive optical power, its first side surface S10 is convex, and its second side surface S11 is convex.

[0393] The sixth lens L6 has a positive optical power, its first side surface S12 is convex, and its second side surface S13 is concave.

[0394] The seventh lens L7 has a positive optical power, its first side surface S14 is convex, and its second side surface S15 is concave.

[0395] The second side of the optical lens is provided with an image plane IMA, and a first filter L8 and a second filter L9 are arranged between the seventh lens L7 and the image plane IMA. The first filter L8 has a first side S16 and a second side S17. The second filter L9 has a first side S18 and a second side S19. When IMA is the imaging plane, the light from the object sequentially passes through the surfaces S1 to S19 and finally forms an image on the IMA. When IMA is the image source plane, the light from the IMA sequentially passes through the surfaces S19 to S1 and finally projects onto the object.

[0396] Table 29 shows the basic parameter table of the optical lens of Embodiment 15, where the unit of the radius of curvature and the thickness / distance is millimeter (mm).

[0397]

[0398] Table 29

[0399] In Embodiment 15, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical surfaces. Table 30 gives the conic coefficient k and the high-order term coefficients A4, A6, A8, A 10 and A 12 .

[0400] Face number k A4 A6 A8 A10 A12 S14 -0.3353 5.9345E-05 -1.3040E-07 9.6457E-09 -4.6773E-11 6.3666E-14 S15 2.5178 2.3001E-04 -8.9248E-06 6.9208E-07 -1.7695E-08 2.0500E-10

[0401] Table 30

[0402] Example 16

[0403] The following refers to Figure 16 Describe the optical lens according to Embodiment 16 of the present application.

[0404] As Figure 16 shown, the optical lens sequentially includes, along the optical axis from the first side to the second side: 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. The aperture stop STO can be arranged between the third lens L3 and the fourth lens L4. The seventh lens L7 is an aspherical lens.

[0405] The first lens L1 has a positive optical power, its first side S1 is a convex surface, and its second side S2 is a concave surface.

[0406] The second lens L2 has a negative optical power, its first side S3 is a concave surface, and its second side S4 is a concave surface.

[0407] The third lens L3 has a negative optical power, its first side S5 is a concave surface, and its second side S6 is a convex surface.

[0408] The fourth lens L4 has a positive optical power. Its first side S8 is convex, and its second side S9 is convex.

[0409] The fifth lens L5 has a positive optical power. Its first side S10 is convex, and its second side S11 is convex.

[0410] The sixth lens L6 has a positive optical power. Its first side S12 is convex, and its second side S13 is concave.

[0411] The seventh lens L7 has a positive optical power. Its first side S14 is convex, and its second side S15 is concave.

[0412] An image plane IMA is provided on the second side of the optical lens. A first filter L8 and a second filter L9 are provided between the seventh lens L7 and the image plane IMA. The first filter L8 has a first side S16 and a second side S17. The second filter L9 has a first side S18 and a second side S19. When IMA is the imaging plane, light from the object sequentially passes through the surfaces S1 to S19 and finally forms an image on IMA. When IMA is the image source plane, light from IMA sequentially passes through the surfaces S19 to S1 and finally projects onto the object.

[0413] Table 31 shows the basic parameter table of the optical lens of Example 16, where the unit of the radius of curvature and the thickness / distance is millimeter (mm).

[0414]

[0415] Table 31

[0416] In Example 16, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical. Table 32 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0417] Face number k A4 A6 A8 A10 A12 S14 -0.4884 6.1638E-05 -1.1061E-07 1.2085E-08 -6.6344E-11 -5.2339E-14 S15 3.0962 1.4656E-04 -5.3065E-06 4.5102E-07 -1.1548E-08 1.1921E-10

[0418] Table 32

[0419] Table 33 gives the basic parameters of the optical lens in Examples 1-16, such as ENPD, D, H, FOV, θ, F, BFL, TTL, F1, F2, F4, F5, D3, D8, D9, D10, D14, SAG3, and etc.

[0420]

[0421]

[0422] Table 33 In summary, the conditional expressions of the embodiments in Embodiments 1-16 satisfy the relationships shown in Table 34.

[0423]

[0424]

[0425]

[0426] Table 34

[0427] The present application also provides an electronic device, which includes an optical lens in the above exemplary embodiments and an imaging element for converting an optical image formed by the optical lens into an electrical signal. The imaging element is disposed on an imaging surface or an image source surface, and may be, for example, a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor device (CMOS).

[0428] The above description is only a preferred embodiment of the present application and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, a technical solution formed by mutually replacing the above features with technical features having similar functions (but not limited to) disclosed in the present application.

Claims

1. An optical lens, characterized in that, In order from the first side to the second side along the optical axis, it includes: A first lens with a positive optical power, whose first side is convex and the second side is concave; A second lens with a negative optical power, whose first side is concave; A third lens with a negative optical power, whose first side is concave; A fourth lens with a positive optical power, whose second side is convex; A fifth lens with a positive optical power, whose first side is convex; A sixth lens with an optical power, whose first side is convex and the second side is concave; and A seventh lens with an optical power, whose first side is convex and the second side is concave.

2. The optical lens according to claim 1, characterized in that, For the overall focal length value F of the optical lens, the maximum clear aperture D of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, and the radian value θ of the maximum field of view angle of the optical lens, it satisfies: (F×θ) / D≥0.

2.

3. The optical lens according to claim 1, characterized in that, For the overall optical length TTL of the optical lens and the back focal length BFL of the optical lens, it satisfies: BFL / TTL≤0.

2.

4. The optical lens according to claim 1, characterized in that, For the overall focal length value F of the optical lens and the entrance pupil diameter ENPD of the optical lens, it satisfies: F / ENPD≤1.

4.

5. The optical lens according to claim 1, characterized in that, For the air gap d34 between the third lens and the fourth lens on the optical axis and the overall focal length value F of the optical lens, it satisfies: d34 / F≥0.

08.

6. The optical lens according to claim 1, characterized in that, For the maximum clear aperture D7 of the first side of the fourth lens corresponding to the maximum field of view angle of the optical lens, the maximum clear aperture D8 of the second side of the fourth lens corresponding to the maximum field of view angle of the optical lens, and the overall focal length value F of the optical lens, it satisfies: (D7+D8) / 2 / F≥1.

1.

7. The optical lens according to claim 1, characterized in that, For the overall focal length value F of the optical lens, the curvature radius R3 of the first side of the second lens, and the curvature radius R4 of the second side of the second lens, it satisfies: 0.3≤|F / R3|+|F / R4|≤1.

5.

8. The optical lens according to claim 1, characterized in that, For the focal length value F4 of the fourth lens and the focal length value F5 of the fifth lens, it satisfies: |F4 / F5|≤2.

5.

9. An optical lens, characterized in that, In order from the first side to the second side along the optical axis, it includes: A first lens with a positive optical power; A second lens with a negative optical power; A third lens with a negative optical power; A fourth lens with a positive optical power; A fifth lens with a positive optical power; A sixth lens with an optical power; and A seventh lens with an optical power; Wherein, for the air gap d34 between the third lens and the fourth lens on the optical axis and the overall focal length value F of the optical lens, it satisfies: d34 / F≥0.

08.

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

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