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 positive focal power, and the second side surface of the third lens is a convex surface; the first side surface of the fourth lens is a convex surface; the first side surface of the fifth lens is a convex surface, and the second side surface of the fifth lens is a concave surface; 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] The present application relates to the field of optical devices, and particularly to a seven-piece optical lens and an electronic device. Background Art

[0002] A lidar lens is a key component for an autonomous driving assistance system to obtain external information. With the rapid development of the autonomous driving assistance system, the demand for lidar lenses is getting higher and higher, and lidar lenses are developing in the direction of high resolution and miniaturization.

[0003] Compared with ordinary optical lenses, lidar lenses applied to autonomous driving assistance systems have special requirements. For example, lidar lenses need to have a larger light transmission aperture and a large aperture to achieve long-distance measurement; in order to improve the driver's judgment of the captured images by the lens, lidar lenses also need to have the performance of clear imaging within a long focal length and a small field of view.

[0004] However, the existing lidar lenses have weak light transmission ability and cannot achieve both a large aperture and a small diameter, nor can they achieve both a large aperture and high resolution. Summary of the Invention

[0005] The present 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.

[0006] In a first aspect of the present application, there is provided such an optical lens, which sequentially includes, along the optical axis from the first side to the second side: a first lens with positive optical power, whose first side is convex and the second side is concave; a second lens with negative optical power, whose first side is concave; a third lens with positive optical power, whose second side is convex; a fourth lens with optical power, whose first side is convex; a fifth lens with positive optical power, whose first side is convex and the second side is concave; a sixth lens with optical power, whose first side is convex and the second side is concave; and a seventh lens with optical power, whose first side is convex and the second side is concave.

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

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

[0009] According to an exemplary embodiment of the present application, the fourth lens has positive or negative optical power, and its second side is convex or concave.

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

[0011] According to an exemplary embodiment of the present 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 radian value θ of the maximum field of view angle of the optical lens satisfy: D / H / θ ≤ 6.5.

[0015] 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.

[0016] 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 ≥ 0.1.

[0017] 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 ≤ 0.25.

[0018] According to an exemplary embodiment of the present application, the back focal length BFL of the optical lens and the lens group length TL of the optical lens satisfy: BFL / TL ≤ 0.25.

[0019] 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 ≤ 1.5.

[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 ≤ F / H ≤ 3.

[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.

[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 ≥ 2.5.

[0023] 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: 3 ≤ F1 / F ≤ 15.

[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: F2 / F ≥ -4.

[0025] 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: -3 ≤ F2 / F ≤ -1.

[0026] According to an exemplary embodiment of the present application, the focal length value F3 of the third lens and the overall focal length value F of the optical lens satisfy: F3 / F ≤ 7.

[0027] 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: F5 / F ≤ 6.

[0028] According to an exemplary embodiment of the present application, 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 satisfy: 0.4 ≤ R13 / R14 ≤ 1.8.

[0029] According to an exemplary embodiment of the present application, 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 satisfy: 0.6 ≤ R13 / R14 ≤ 1.3.

[0030] According to an exemplary embodiment of the present application, 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 satisfy: 0.3 ≤ R11 / R12 ≤ 2.

[0031] According to an exemplary embodiment of the present application, 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 satisfy: 0.5 ≤ R11 / R12 ≤ 1.8.

[0032] According to an exemplary embodiment of the present application, the curvature radius R9 of the first side surface of the fifth lens and the curvature radius R10 of the second side surface of the fifth lens satisfy: 0.2 ≤ R9 / R10 ≤ 1.2.

[0033] According to an exemplary embodiment of the present application, the curvature radius R9 of the first side surface of the fifth lens and the curvature radius R10 of the second side surface of the fifth lens satisfy: 0.3 ≤ R9 / R10 ≤ 1.

[0034] According to an exemplary embodiment of the present application, the air gap d23 between the second lens and the third lens on the optical axis and the overall focal length value F of the optical lens satisfy: d23 / F ≥ 0.1.

[0035] According to an exemplary embodiment of the present application, the air gap d23 between the second lens and the third lens on the optical axis and the overall focal length value F of the optical lens satisfy: 0.15 ≤ d23 / F ≤ 1.

[0036] According to an exemplary embodiment of the present application, the refractive index Nd5 of the fifth lens and the overall optical power of the optical lens Satisfy:

[0037] According to an exemplary embodiment of the present application, the combined optical power of the fourth lens and the fifth lens And the overall optical power of the optical lens Satisfy:

[0038] 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.

[0039] 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 ≥ -3.

[0040] According to an exemplary embodiment of the present application, the radius of curvature R9 of the first side of the fifth lens and the overall focal length value F of the optical lens satisfy: R9 / F ≤ 3.

[0041] According to an exemplary embodiment of the present application, the radius of curvature R10 of the second side of the fifth lens and the overall focal length value F of the optical lens satisfy: R10 / F ≤ 4.

[0042] 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 ≤ 1.5.

[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: R14 / F ≤ 1.5.

[0044] According to an exemplary embodiment of the present application, the maximum light passing aperture D7 of the first side of the fourth lens corresponding to the maximum field of view angle of the optical lens, the maximum light passing 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 ≤ (D7 + D8) / 2 / F ≤ 3.5.

[0045] According to an exemplary embodiment of the present application, the maximum light passing aperture D7 of the first side of the fourth lens corresponding to the maximum field of view angle of the optical lens, the maximum light passing 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: 1.3 ≤ (D7 + D8) / 2 / F ≤ 3.

[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 light passing 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) ≤ -0.1.

[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 light passing aperture D3 of the first side of the second lens corresponding to the maximum field of view angle of the optical lens satisfy: -0.4 ≤ SAG3 / (D3 / 2) ≤ -0.2.

[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 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| ≤ 1.5.

[0050] According to an exemplary embodiment of the present application, the focal length value F3 of the third lens and the focal length value F5 of the fifth lens satisfy: F3 / F5 ≤ 2.8.

[0051] According to an exemplary embodiment of the present application, the focal length value F3 of the third lens and the focal length value F5 of the fifth lens satisfy: 0.5 ≤ F3 / F5 ≤ 2.5.

[0052] The second aspect of the present application provides an optical lens which sequentially includes, from the first side to the second side along the optical axis, a first lens with a positive optical power, a second lens with a negative optical power, a third lens with a positive optical power, a fourth lens with an 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 gap d23 between the second lens and the third lens on the optical axis and the overall focal length value F of the optical lens satisfy: d23 / F≥0.1.

[0053] The 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.

[0054] 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 throughput, and high resolution of the optical lens can be achieved. Description of the Drawings

[0055] Other features, objects, and advantages of the present application will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings. Among them:

[0056] Figure 1 Fig. shows a schematic structural diagram of the optical lens according to Embodiment 1 of the present application;

[0057] Figure 2 Fig. shows a schematic structural diagram of the optical lens according to Embodiment 2 of the present application;

[0058] Figure 3 Fig. shows a schematic structural diagram of the optical lens according to Embodiment 3 of the present application;

[0059] Figure 4 Fig. shows a schematic structural diagram of the optical lens according to Embodiment 4 of the present application;

[0060] Figure 5 Fig. shows a schematic structural diagram of the optical lens according to Embodiment 5 of the present application;

[0061] Figure 6 Fig. shows a schematic structural diagram of the optical lens according to Embodiment 6 of the present application;

[0062] Figure 7 Fig. shows a schematic structural diagram of the optical lens according to Embodiment 7 of the present application;

[0063] Figure 8 Fig. shows a schematic structural diagram of the optical lens according to Embodiment 8 of the present application;

[0064] Figure 9 Shows a schematic structural diagram of an optical lens according to Embodiment 9 of the present application;

[0065] Figure 10 Shows a schematic structural diagram of an optical lens according to Embodiment 10 of the present application;

[0066] Figure 11 Shows a schematic structural diagram of an optical lens according to Embodiment 11 of the present application;

[0067] Figure 12 Shows a schematic structural diagram of an optical lens according to Embodiment 12 of the present application;

[0068] Figure 13 Shows a schematic structural diagram of an optical lens according to Embodiment 13 of the present application;

[0069] Figure 14 Shows a schematic structural diagram of an optical lens according to Embodiment 14 of the present application;

[0070] Figure 15 Shows a schematic structural diagram of an optical lens according to Embodiment 15 of the present application;

[0071] Figure 16 Shows a schematic structural diagram of an optical lens according to Embodiment 16 of the present application;

[0072] Figure 17 Shows a schematic structural diagram of an optical lens according to Embodiment 17 of the present application;

[0073] Figure 18 Shows a schematic structural diagram of an optical lens according to Embodiment 18 of the present application;

[0074] Figure 19 Shows a schematic structural diagram of an optical lens according to Embodiment 19 of the present application;

[0075] Figure 20 Shows a schematic structural diagram of an optical lens according to Embodiment 20 of the present application;

[0076] Figure 21 Shows a schematic structural diagram of an optical lens according to Embodiment 21 of the present application;

[0077] Figure 22 Shows a schematic structural diagram of an optical lens according to Embodiment 22 of the present application;

[0078] Figure 23 Shows a schematic structural diagram of an optical lens according to Embodiment 23 of the present application; and

[0079] Figure 24Shows a schematic structural diagram of an optical lens according to Embodiment 24 of the present application. Detailed implementation

[0080] 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 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.

[0081] 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 feature 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.

[0082] In the drawings, for the sake of convenience of illustration, the thickness, size and shape of the lens 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 illustration only and are not drawn to an exact scale.

[0083] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens 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.

[0084] It should also be understood that the terms "comprising", "including" and / or "having", when used in this specification, mean the presence of the stated features, elements and / or components, but do not exclude 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.

[0085] 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.

[0086] 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 accompanying drawings and in conjunction with the embodiments.

[0087] The features, principles, and other aspects of the present application will be described in detail below.

[0088] The optical lens according to an exemplary embodiment of the present application may include, for example, seven lenses having optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. These seven lenses are arranged in sequence along the optical axis from the first side to the second side.

[0089] In an exemplary embodiment, the optical lens can be used as, for example, an imaging lens. At this time, the first side of the optical lens can be the object side, and the second side can be the image side. The light rays from the object side can form an image on the image side. The imaging surface of the optical lens is provided on the second side of the optical lens.

[0090] In an exemplary embodiment, the optical lens can be used as, for example, a projection lens or a lidar emission end lens. At this time, the second side of the optical lens can be the image source side, and the first side can be the imaging side. The light rays from the image source side can form an image on the imaging side. The image source surface of the optical lens is provided on the second side of the optical lens.

[0091] In an exemplary embodiment, the first lens may have positive optical power. Its first side surface can be, for example, a convex surface, and its second side surface can be, for example, a concave surface. The first lens is designed as a positive lens convex toward 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 rays transition smoothly to the rear system as much as possible, facilitating the realization of low sensitivity and a small front aperture 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 and reduce the influence of these substances on imaging. In other examples, the first lens is made of a high refractive index material, which is beneficial to reducing the front aperture of the system and improving the imaging quality of the optical lens.

[0092] 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 light energy loss caused by the excessively large main ray angle of the edge field of view of the back-end chip when the light reaches the image plane, and is conducive to improving the illumination of the edge field of view.

[0093] 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 of the second lens 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.

[0094] In an exemplary embodiment, the third lens may have positive optical power, 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 third lens is designed as a positive lens, which is conducive to converging light, and the first side surface of the third lens is designed as a concave surface, which can make the light converge to a certain extent, which is conducive to the smooth transition of the light trend of the entire system and reduces the sensitivity of the optical lens. 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, reduce light energy loss, and increase the illumination of the edge field of view. At the same time, it can also change the trend of edge light, reduce the front port diameter of the optical lens, and realize the miniaturization of the optical lens. The second side surface of the third lens is designed as a convex surface, which can make the light converge and emit more reasonably, reduce the defocus between different fields of view, and help improve the resolution ability of the optical lens.

[0095] In an exemplary embodiment, the third lens may have a positive optical power. Its first side may be, for example, convex, and its second side may be, for example, convex. The third lens is designed as a positive lens, which is beneficial for converging light. The first side of the third lens is designed as convex, which can compress the height of the light incident through the second lens; the second side of the third lens is designed as convex, which can further converge the light exiting the third lens and smoothly enter the rear system, facilitating the reduction of the front aperture of the optical lens. When used in combination with the second lens having a negative optical power, it 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 third lens is designed as convex, which can converge the light after passing through the third lens, and then enable the light in the peripheral field of view to pass through the aperture and enter the rear system as much as possible and quickly, which is beneficial for improving the overall light transmission and illuminance of the optical lens.

[0096] In an exemplary embodiment, the fourth 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 fourth lens is designed as a negative lens, which can appropriately diverge the light and is beneficial for the smooth transition of the light trend of the entire system. The first side of the fourth lens is designed as convex, which can collect more light and enter the rear system. The second side of the fourth lens is designed as concave, which can enable the light exiting the fourth lens to have a smooth transition and is beneficial for correcting the light of each field of view.

[0097] In an exemplary embodiment, the fourth lens may have a positive optical 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 converge the light entering from the third lens. At the same time, the second side of the fourth lens is designed as convex, which can further converge the light exiting from the first side of the fourth lens, enabling the light in the peripheral field of view to pass through the aperture and enter the rear system as much as possible and quickly, which is beneficial for improving the overall light transmission and illuminance of the optical lens.

[0098] In an exemplary embodiment, the fourth 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 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 collect more light and enter the rear system. The second side of the fourth lens is designed as concave, which can enable the light exiting the fourth lens to have a smooth transition and is beneficial for correcting the light of each field of view.

[0099] In an exemplary embodiment, the fifth lens may have a positive focal power. Its first side may be convex, for example, and its second side may be concave, for example. The fifth lens is designed as a meniscus positive lens, which can further converge the light rays diverged by the front lens, facilitating a smooth transition of the light ray trend in the entire system and reducing the sensitivity of the optical lens. The first side of the fifth lens is designed as convex, enabling the light rays to converge first within the fifth lens, reducing the distribution range of the light rays of the same field of view on the image plane, weakening the coupling relationship between the light rays of different fields of view on the image plane, facilitating better correction of the light rays of each field of view, and improving the resolution ability of the optical lens.

[0100] In an exemplary embodiment, the sixth lens may have a positive focal power. Its first side may be convex, for example, and its second side may be concave, for example. The sixth lens is designed as a positive lens and has a meniscus shape (i.e., its shape is close to concentric circles), which can enable a smooth transition of the light rays with a large front aperture, and at the same time can appropriately converge the light rays, reducing the back focal length of the optical lens to a certain extent, and thus reducing the overall optical length of the optical lens. The first side of the sixth lens is designed as convex, capable of collecting more light rays into the rear system. The second side of the sixth lens is designed as concave, which can enable a smooth transition of the light rays exiting the sixth lens, facilitating the correction of the light rays of each field of view.

[0101] In an exemplary embodiment, the sixth lens may have a negative focal power. Its first side may be convex, for example, and its second side may be concave, for example. The sixth lens is designed as a negative lens and has a meniscus shape (i.e., its shape is close to concentric circles), which can enable a smooth transition of the light rays with a large front aperture. The first side of the sixth lens is designed as convex, capable of collecting more light rays into the rear system. The second side of the sixth lens is designed as concave, which can enable a smooth transition of the light rays exiting the sixth lens, facilitating the correction of the light rays of each field of view.

[0102] In an exemplary embodiment, the seventh lens may have a positive focal power. Its first side may be convex, for example, and its second side may be concave, for example. The seventh lens is designed as a positive lens, which is conducive to the rapid convergence of light rays, and has a meniscus shape (i.e., its shape is close to concentric circles), which can enable a smooth transition of the light rays with a large front aperture, reducing the back focal length of the optical lens to a certain extent, and thus reducing the overall optical length of the optical lens.

[0103] In an exemplary embodiment, the seventh lens may have a negative optical power. Its first side surface may be convex, for example, and its second side surface may be concave, for example. The seventh lens is designed as a negative lens, which is beneficial for the proper diffusion of light and a smooth transition to the image plane. Moreover, 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 enter the rear chip surface quickly and smoothly, reducing the back focal length of the optical lens to a certain extent, thereby reducing the overall optical length of the optical lens and improving the resolution ability of the optical lens.

[0104] In an exemplary embodiment, the seventh lens may be 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.

[0105] In an exemplary embodiment, the optical lens may further include a diaphragm, which may be disposed, for example, between the second lens and the third lens. By disposing the diaphragm between the second lens and the third lens, it is beneficial for the light rays to smoothly transition to the rear of the system, reduce the aperture of the rear lens, and reduce the assembly sensitivity of the optical lens. It should be understood that the diaphragm disposed between the second lens and the third lens is only exemplary, and the present application does not make specific limitations on this. According to actual needs, the diaphragm can also be disposed at other positions.

[0106] In an exemplary embodiment, the optical lens may further include a filter located 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.

[0107] 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 (CMOS) element.

[0108] In an exemplary embodiment, the overall 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 overall 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 overall optical length of the optical lens and achieving 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.

[0109] 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 ≤ 6.5. In an example, D / H / θ ≤ 6. Further, 4.5 ≤ D / H / θ ≤ 5.9. 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 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 achieve miniaturization of the optical lens.

[0110] 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, (D × 180°) / (H × FOV) ≤ 27. Further, 10 ≤ (D × 180°) / (H × FOV) ≤ 20. 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 can enable the optical lens to have a smaller front aperture, reduce the volume of the optical lens, and thus achieve miniaturization of the optical lens.

[0111] 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 ≥ 0.1. In an example, 0.25 ≤ (F × θ) / D ≤ 0.5. 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 can enable the optical lens to 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 achieve long-distance detection of the optical lens.

[0112] 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 ≤ 0.25. In an example, 0.05 ≤ BFL / TTL ≤ 0.15. Reasonably configuring the ratio of the back focal length to the overall optical length of the optical lens can enable the optical lens to meet the special requirements of a short back focal length, while reserving space for the installation and focusing of optical elements, reducing the overall optical length of the optical lens, and achieving miniaturization of the optical lens.

[0113] In an exemplary embodiment, the back focal length (BFL) of the optical lens and the lens group length (TL) of the optical lens may satisfy: BFL / TL ≤ 0.25. In an example, 0.06 ≤ BFL / TL ≤ 0.15. By reasonably configuring the ratio of the back focal length of the optical lens to the lens group length, it is possible to reduce the back focal length of the optical lens to a certain extent while ensuring the normal assembly of the module, thereby reducing the overall optical length of the optical lens and achieving miniaturization of the optical lens.

[0114] 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 ≤ 1.5. In an example, F / ENPD ≤ 1.1. Further, 0.65 ≤ F / ENPD ≤ 1.05. By reasonably configuring the ratio of the overall focal length value of the optical lens to the entrance pupil diameter, it is beneficial to achieve a large aperture of the optical lens and increase the light transmission amount of the optical lens; at the same time, it is also beneficial to increase the entrance pupil diameter of the optical lens and improve the relative illumination of the optical lens.

[0115] 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 ≤ 3. In an example, 1.5 ≤ F / H ≤ 2. By 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, it is beneficial to improve the resolution ability of the optical lens.

[0116] 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. In an example, 2.8 ≤ 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 restricting 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, achieving miniaturization and low cost of the optical lens.

[0117] 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 ≥ 2.5. By reasonably configuring the focal length value of the first lens, it is possible to make the focal length value of the first lens positive, which is beneficial for 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 transition smoothly to the subsequent system, achieving high light transmission of the optical lens. Further, 3 ≤ F1 / F ≤ 15. Controlling the first lens to have an appropriate range of focal lengths can enable the first lens to play a certain role in converging light, allowing more light to enter the system while enabling the light to transition smoothly to the subsequent system, achieving high light transmission of the optical lens.

[0118] 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: F2 / F ≥ -4. Reasonably configuring the focal length value of the second lens is beneficial for appropriately diffusing light, increasing the aperture of the diaphragm, and further increasing the light passing aperture of the optical lens, thereby achieving a high light passing amount of the optical lens. Further, -3 ≤ F2 / F ≤ -1. Controlling the second lens to have a relatively small absolute value of the focal length is beneficial for better diffusing light, increasing the aperture of the diaphragm, and further increasing the light passing aperture of the optical lens, thereby achieving a high light passing amount of the optical lens.

[0119] In an exemplary embodiment, the focal length value F3 of the third lens and the overall focal length value F of the optical lens may satisfy: F3 / F ≤ 7. In an example, 1.5 ≤ F3 / F ≤ 6. Reasonably configuring the focal length value of the third lens can compress light to a certain extent, collect more light within a limited space as much as possible, and is also beneficial for the balance of various aberrations.

[0120] 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: F5 / F ≤ 6. In an example, 2 ≤ F5 / F ≤ 4.5. Reasonably configuring the focal length value of the fifth lens can further converge light, is beneficial for the smooth transition of the light trend of the entire system, reduces the sensitivity of the optical lens, and is also beneficial for the balance of various aberrations and improves the resolution ability of the optical lens.

[0121] 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: 0.4 ≤ R13 / R14 ≤ 1.8. Reasonably configuring the ratio of the curvature radii of the first and second side surfaces of the seventh lens can make the shape of the seventh lens convex-concave and close to a concentric circle, which is beneficial for the smooth transition of more light and improves the light passing ability of the optical lens. Further, 0.6 ≤ R13 / R14 ≤ 1.3, making the curvature radii of the first and second side surfaces of the seventh lens closer to each other, can make the shape of the seventh lens convex-concave and close to a concentric circle, which is beneficial for the smooth transition of more light, prevents excessive light deflection, and improves the light passing ability of the optical lens.

[0122] In an exemplary embodiment, the ratio of the radius of curvature R11 of the first side surface of the sixth lens to the radius of curvature R12 of the second side surface of the sixth lens may satisfy: 0.3 ≤ R11 / R12 ≤ 2. Reasonably configuring the ratio of the radii of curvature of the first and second side surfaces of the sixth lens can make the shape of the sixth lens convex-concave and close to concentric circles, which is conducive to the smooth transition of light with a large front aperture, reduces the back focal length of the optical lens to a certain extent, and further reduces the overall optical length of the optical lens. Further, 0.5 ≤ R11 / R12 ≤ 1.8 makes the radii of curvature of the first and second side surfaces of the sixth lens closer, can make the shape of the sixth lens closer to concentric circles, is conducive to the smooth transition of light with a large front aperture, maintains the light convergence trend, reduces the back focal length of the optical lens to a certain extent, and further reduces the overall optical length of the optical lens.

[0123] In an exemplary embodiment, the ratio of the radius of curvature R9 of the first side surface of the fifth lens to the radius of curvature R10 of the second side surface of the fifth lens may satisfy: 0.2 ≤ R9 / R10 ≤ 1.2. Reasonably configuring the ratio of the radii of curvature of the first and second side surfaces of the fifth lens can make the shape of the fifth lens convex-concave and close to concentric circles, which is conducive to the smooth transition of light with a large front aperture, reduces the back focal length of the optical lens to a certain extent, and further reduces the overall optical length of the optical lens. Further, 0.3 ≤ R9 / R10 ≤ 1 makes the radii of curvature of the first and second side surfaces of the fifth lens closer, can make the shape of the fifth lens convex-concave and close to concentric circles, is conducive to the smooth transition of light with a large front aperture, maintains the light convergence trend, reduces the back focal length of the optical lens to a certain extent, and further reduces the overall optical length of the optical lens.

[0124] In an exemplary embodiment, the air gap d23 between the second lens and the third lens on the optical axis and the overall focal length value F of the optical lens may satisfy: d23 / F ≥ 0.1. Reasonably configuring the air gap between the second lens and the third lens on the optical axis can ensure that the light has sufficient space to diverge, which is conducive to increasing the light passing aperture of the optical lens and improving the illuminance of the optical lens. Further, 0.15 ≤ d23 / F ≤ 1, controlling the air gap between the second lens and the third lens on the optical axis within a reasonable range can ensure that the light has sufficient space to diverge, is conducive to increasing the light passing aperture of the optical lens and improving the illuminance of the optical lens, and at the same time can also control the air gap between the second lens and the third lens on the optical axis from being too large to prevent the light from spreading excessively, which is conducive to controlling the aperture of the rear lens within a suitable range.

[0125] In an exemplary embodiment, the refractive index Nd5 of the fifth lens and the overall optical power of the optical lens Satisfy: In the example, Further, 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.

[0126] 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: In an example, 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.

[0127] In an exemplary embodiment, the radius of curvature R1 of the first surface of the first lens and the overall focal length value F of the optical lens can satisfy: R1 / F ≤ 4. In an example, 1 ≤ R1 / F ≤ 3. By reasonably configuring the radius of curvature of the first surface of the first lens, it is possible to make the first surface of the first lens a convex surface with a relatively small radius of curvature, which is beneficial for contracting the front-end light, reducing the height of the light entering the first surface of the second lens, and decreasing the front aperture of the optical lens.

[0128] In an exemplary embodiment, the radius of curvature R3 of the first surface of the second lens and the overall focal length value F of the optical lens can satisfy: R3 / F ≥ -3. In an example, -2 ≤ R3 / F ≤ -0.5. By reasonably configuring the radius of curvature of the first surface of the second lens, it is possible to make the first 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 transmission aperture of the optical lens, and achieving a high light transmission amount of the optical lens.

[0129] In an exemplary embodiment, the radius of curvature R9 of the first surface of the fifth lens and the overall focal length value F of the optical lens can satisfy: R9 / F ≤ 3. In an example, 0.8 ≤ R9 / F ≤ 2. By reasonably configuring the radius of curvature of the first surface of the fifth lens, it is possible to make the first surface of the fifth lens have a relatively small radius of curvature, which is beneficial for the light to transition smoothly to the rear system and, to a certain extent, reduce the back focal length of the optical lens.

[0130] In an exemplary embodiment, the radius of curvature R10 of the second surface of the fifth lens and the overall focal length value F of the optical lens can satisfy: R10 / F ≤ 4. In an example, 1 ≤ R10 / F ≤ 3.5. By reasonably configuring the radius of curvature of the second surface of the fifth lens, it is possible to make the second surface of the fifth lens have a relatively small radius of curvature, which is beneficial for the light to transition smoothly to the rear system and, to a certain extent, reduce the back focal length of the optical lens.

[0131] 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 ≤ 1.5. In an example, 0.5 ≤ R13 / F ≤ 1.2. Reasonably configuring the radius of curvature of the first side surface of the seventh lens can make the first side surface of the seventh lens have a smaller radius of curvature, which is beneficial for light to converge to the image plane, and can effectively correct aberration and improve the imaging quality of the optical lens.

[0132] 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 ≤ 1.5. In an example, 0.5 ≤ R14 / F ≤ 1.2. Reasonably configuring the radius of curvature of the second side surface of the seventh lens can make the second side surface of the seventh lens have a smaller radius of curvature, which is beneficial for light to converge to the image plane, and can effectively correct aberration and improve the imaging quality of the optical lens.

[0133] 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: 1 ≤ (D7 + D8) / 2 / F ≤ 3.5. By controlling the above conditional expression, the aperture of the fourth lens can be increased, which is beneficial for realizing a large aperture of the optical lens. Further, 1.3 ≤ (D7 + D8) / 2 / F ≤ 3. By reasonably controlling the aperture of the fourth lens, while satisfying the realization of a large aperture of the optical lens, it can be ensured that the aperture of the fourth lens will not be too large.

[0134] 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: -0.5 ≤ 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, and makes the peripheral light transition smoothly, reduces the sensitivity of the optical lens, and improves the overall light transmission of the optical lens. Further, -0.4 ≤ SAG3 / (D3 / 2) ≤ -0.2. 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, while ensuring a better divergence effect of the second lens on light, make the peripheral light transition smoothly, reduce the sensitivity of the optical lens, and better improve the overall light transmission of the optical lens.

[0135] 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°. In an example, 55° ≤ (FOV × F) / H ≤ 65°. By reasonably controlling the 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, the characteristics of long focal length can be achieved while ensuring that the optical lens has a sufficient field of view angle, and further, the long-distance detection of the optical lens can be realized.

[0136] In an exemplary embodiment, 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 may satisfy: 0.4 ≤ |F / R3| + |F / R4| ≤ 1.5. In an example, 0.5 ≤ |F / R3| + |F / R4| ≤ 1.3. By reasonably controlling the relationship among the overall focal length value of the optical lens, the curvature radius of the first side of the second lens, and the curvature radius of the second side of the second lens, it can be ensured that the second lens diverges light, which is beneficial to increasing the light passing aperture of the optical lens, and can also effectively correct aberration and improve the imaging quality of the optical lens.

[0137] In an exemplary embodiment, the focal length value F3 of the third lens and the focal length value F5 of the fifth lens may satisfy: F3 / F5 ≤ 2.8. By reasonably configuring the ratio of the focal length value of the third lens to the focal length value of the fifth lens, the focal length values of these two lenses can be made relatively close, which is beneficial to the smooth transition of light and improves the image quality of the optical lens. Further, 0.5 ≤ F3 / F5 ≤ 2.5, preventing the focal length value of the third lens from differing too much from the focal length value of the fifth lens, making the focal length values of these two lenses closer, which is beneficial to the smooth transition of light and better improves the image quality of the optical lens.

[0138] 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 throughput, 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 changes in imaging effects 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.

[0139] 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 image source surface; the lens group length TL of the optical lens refers to the axial distance from the first side of the first lens to the second side of the seventh lens; 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 image source surface; and the maximum field of view FOV of the optical lens is related to the image height H, which refers to the field of view corresponding to the image height H.

[0140] However, those skilled in the art should understand that without departing from the technical solution claimed in the present application, the number of lenses constituting the optical lens can be changed to obtain the various results and advantages described in this specification. For example, although seven lenses are described as an example in the embodiment, the optical lens is not limited to including seven lenses. If necessary, the optical lens may also include other numbers of lenses.

[0141] The following further describes specific embodiments of the optical lens applicable to the above embodiments with reference to the accompanying drawings.

[0142] Example 1

[0143] The following refers to Figure 1 Describe the optical lens according to Embodiment 1 of the present application.

[0144] 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 second lens L2 and the third lens L3. The seventh lens L7 is an aspherical lens.

[0145] The first lens L1 has a positive optical power, its first side S1 is convex, and its second side S2 is concave.

[0146] The second lens L2 has a negative optical power, its first side S3 is concave, and its second side S4 is convex.

[0147] The third lens L3 has a positive optical power, its first side S6 is concave, and its second side S7 is convex.

[0148] The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex.

[0149] The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is concave.

[0150] The sixth lens L6 has a negative optical power, its first side S12 is convex, and its second side S13 is concave.

[0151] The seventh lens L7 has a positive optical power, its first side S14 is convex, and its second side S15 is concave.

[0152] 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 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.

[0153] Table 1 shows the basic parameter table of the optical lens of Embodiment 1, where the unit of the radius of curvature and the thickness / distance is millimeter (mm).

[0154]

[0155] Table 1

[0156] In Embodiment 1, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical surfaces. The surface profile x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:

[0157]

[0158] where x is the sagitta, the distance from the vertex of the aspherical surface at the position with a height of h along the optical axis direction; 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 .

[0159] Surface number k A4 A6 A8 A10 A12 S14 -0.2159 1.2864E-05 -4.6263E-07 7.1534E-09 -1.6009E-11 -2.5281E-13 S15 4.2671 6.1089E-05 -3.3925E-06 1.7180E-07 -4.0015E-09 3.7079E-11

[0160] Table 2

[0161] Example 2

[0162] The following refers to Figure 2 Describe the optical lens according to Embodiment 2 of the present application.

[0163] As Figure 2As 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 second lens L2 and the third lens L3. The seventh lens L7 is an aspherical lens.

[0164] The first lens L1 has a positive focal power, its first side S1 is convex, and its second side S2 is concave.

[0165] The second lens L2 has a negative focal power, its first side S3 is concave, and its second side S4 is convex.

[0166] The third lens L3 has a positive focal power, its first side S6 is convex, and its second side S7 is convex.

[0167] The fourth lens L4 has a positive focal power, its first side S8 is convex, and its second side S9 is convex.

[0168] The fifth lens L5 has a positive focal power, its first side S10 is convex, and its second side S11 is concave.

[0169] The sixth lens L6 has a negative focal power, its first side S12 is convex, and its second side S13 is concave.

[0170] The seventh lens L7 has a positive focal power, its first side S14 is convex, and its second side S15 is concave.

[0171] 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.

[0172] Table 3 shows the basic parameter table of the optical lens of Embodiment 2, where the units of the radius of curvature and the thickness / distance are both millimeters (mm).

[0173]

[0174]

[0175] Table 3

[0176] In Embodiment 2, both the first side surface S14 and the second side surface 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 .

[0177] Surface number k A4 A6 A8 A10 A12 S14 -0.2896 2.5634E-05 3.8459E-07 -1.2957E-08 2.9210E-10 -2.3095E-12 S15 1.9161 1.7730E-04 -7.0709E-06 8.4213E-07 -3.1703E-08 4.6559E-10

[0178] Table 4

[0179] Example 3

[0180] The following refers to Figure 3 to describe an optical lens according to Embodiment 3 of the present application.

[0181] As Figure 3 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 second lens L2 and the third lens L3. The seventh lens L7 is an aspherical lens.

[0182] 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.

[0183] 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.

[0184] The third lens L3 has a positive optical power, its first side surface S6 is a concave surface, and its second side surface S7 is a convex surface.

[0185] The fourth lens L4 has a positive optical power, its first side surface S8 is a convex surface, and its second side surface S9 is a concave surface.

[0186] 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.

[0187] 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.

[0188] 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.

[0189] On the second side of the optical lens, an image plane IMA is provided, 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 an object sequentially passes through each of 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 each of the surfaces S19 to S1 and finally projects onto the object.

[0190] 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).

[0191]

[0192]

[0193] Table 5

[0194] In Embodiment 3, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical surfaces. Table 6 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0195] Surface number k A4 A6 A8 A10 A12 S14 -0.0992 1.3641E-05 -6.3763E-07 1.7584E-08 -1.8272E-10 9.4776E-13 S15 4.8019 7.9814E-05 -3.6596E-06 2.1941E-07 -5.5219E-09 5.7725E-11

[0196] Table 6

[0197] Example 4

[0198] The following refers to Figure 4 Describe the optical lens according to Embodiment 4 of the present application.

[0199] 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 stop STO can be disposed between the second lens L2 and the third lens L3. The seventh lens L7 is an aspherical lens.

[0200] 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.

[0201] The second lens L2 has a negative optical power, its first side S3 is a concave surface, and its second side S4 is a convex surface.

[0202] The third lens L3 has a positive optical power, its first side S6 is a convex surface, and its second side S7 is a convex surface.

[0203] The fourth lens L4 has a positive optical power. Its first side S8 is convex, and its second side S9 is concave.

[0204] The fifth lens L5 has a positive optical power. Its first side S10 is convex, and its second side S11 is concave.

[0205] The sixth lens L6 has a negative optical power. Its first side S12 is convex, and its second side S13 is concave.

[0206] The seventh lens L7 has a positive optical power. Its first side S14 is convex, and its second side S15 is concave.

[0207] 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 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.

[0208] Table 7 shows the basic parameter table of the optical lens of Example 4, where the unit of the radius of curvature and the thickness / distance is millimeter (mm).

[0209]

[0210]

[0211] Table 7

[0212] In Example 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 .

[0213] Surface number k A4 A6 A8 A10 A12 S14 -0.2623 4.1528E-06 6.3186E-08 -4.5254E-09 7.0072E-11 -5.1112E-13 S15 0.4600 1.9956E-04 -2.9468E-06 4.5319E-07 -1.5504E-08 2.3134E-10

[0214] Table 8

[0215] Example 5

[0216] The following refers to Figure 5 Describe the optical lens according to Embodiment 5 of the present application.

[0217] As Figure 5As 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 second lens L2 and the third lens L3. The seventh lens L7 is an aspherical lens.

[0218] The first lens L1 has a positive focal power. Its first side S1 is convex, and its second side S2 is concave.

[0219] The second lens L2 has a negative focal power. Its first side S3 is concave, and its second side S4 is concave.

[0220] The third lens L3 has a positive focal power. Its first side S6 is concave, and its second side S7 is convex.

[0221] The fourth lens L4 has a positive focal power. Its first side S8 is convex, and its second side S9 is concave.

[0222] The fifth lens L5 has a positive focal power. Its first side S10 is convex, and its second side S11 is concave.

[0223] The sixth lens L6 has a negative focal power. Its first side S12 is convex, and its second side S13 is concave.

[0224] The seventh lens L7 has a positive focal power. Its first side S14 is convex, and its second side S15 is concave.

[0225] 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.

[0226] Table 9 shows the basic parameter table of the optical lens of Example 5, where the unit of the radius of curvature and the thickness / distance is millimeter (mm).

[0227]

[0228]

[0229] Table 9

[0230] In Embodiment 5, both the first side surface S14 and the second side surface S15 of the seventh lens L7 are aspherical surfaces. Table 10 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0231] Surface number k A4 A6 A8 A10 A12 S14 -0.1209 2.0384E-05 -4.9564E-07 1.3325E-08 -1.2344E-10 5.6947E-13 S15 6.2038 6.8640E-05 -2.3820E-06 1.2625E-07 -2.6379E-09 2.3632E-11

[0232] Table 10

[0233] Example 6

[0234] The following refers to Figure 6 to describe an optical lens according to Embodiment 6 of the present application.

[0235] As Figure 6 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 second lens L2 and the third lens L3. The seventh lens L7 is an aspherical lens.

[0236] 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.

[0237] 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 concave surface.

[0238] The third lens L3 has a positive optical power. Its first side surface S6 is a concave surface, and its second side surface S7 is a convex surface.

[0239] The fourth lens L4 has a positive optical power. Its first side surface S8 is a convex surface, and its second side surface S9 is a convex surface.

[0240] 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.

[0241] 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.

[0242] 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.

[0243] 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.

[0244] Table 11 shows the basic parameter table of the optical lens of Embodiment 6, where the units of the radius of curvature and the thickness / distance are both millimeters (mm).

[0245]

[0246] Table 11

[0247] In Embodiment 6, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical surfaces. Table 12 gives the conic coefficients k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0248] Surface number k A4 A6 A8 A10 A12 S14 -0.0094 3.0504E-05 -5.1190E-07 1.5515E-08 -1.4722E-10 8.7885E-13 S15 6.6182 7.8936E-05 -2.4166E-06 1.2821E-07 -2.7326E-09 2.8331E-11

[0249] Table 12

[0250] Example 7

[0251] The following refers to Figure 7 Describe the optical lens according to Embodiment 7 of the present application.

[0252] As Figure 7 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 second lens L2 and the third lens L3. The seventh lens L7 is an aspherical lens.

[0253] 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.

[0254] 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.

[0255] The third lens L3 has a positive optical power, its first side S6 is a convex surface, and its second side S7 is a convex surface.

[0256] The fourth lens L4 has a positive optical power. Its first side S8 is convex, and its second side S9 is concave.

[0257] The fifth lens L5 has a positive optical power. Its first side S10 is convex, and its second side S11 is concave.

[0258] The sixth lens L6 has a negative optical power. Its first side S12 is convex, and its second side S13 is concave.

[0259] The seventh lens L7 has a positive optical power. Its first side S14 is convex, and its second side S15 is concave.

[0260] 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.

[0261] 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).

[0262]

[0263] Table 13

[0264] 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 .

[0265] Surface number k A4 A6 A8 A10 A12 S14 -0.1378 1.6435E-05 -4.4106E-07 1.2130E-08 -1.2953E-10 5.7564E-13 S15 4.0437 7.1578E-05 -2.5756E-06 1.4071E-07 -3.3050E-09 3.0246E-11

[0266] Table 14

[0267] Example 8

[0268] The following refers to Figure 8 Describe the optical lens according to Embodiment 8 of the present application.

[0269] As Figure 8As 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 second lens L2 and the third lens L3. The seventh lens L7 is an aspherical lens.

[0270] The first lens L1 has a positive focal power. Its first side S1 is convex, and its second side S2 is concave.

[0271] The second lens L2 has a negative focal power. Its first side S3 is concave, and its second side S4 is concave.

[0272] The third lens L3 has a positive focal power. Its first side S6 is convex, and its second side S7 is convex.

[0273] The fourth lens L4 has a positive focal power. Its first side S8 is convex, and its second side S9 is concave.

[0274] The fifth lens L5 has a positive focal power. Its first side S10 is convex, and its second side S11 is concave.

[0275] The sixth lens L6 has a negative focal power. Its first side S12 is convex, and its second side S13 is concave.

[0276] The seventh lens L7 has a positive focal power. Its first side S14 is convex, and its second side S15 is concave.

[0277] 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.

[0278] Table 15 shows the basic parameter table of the optical lens of Example 8, where the unit of the radius of curvature and the thickness / distance is millimeter (mm).

[0279]

[0280] Table 15

[0281] 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 higher-order term coefficients A4, A6, A8, A for the aspherical surfaces S14, S15 in Example 8.10 and A 12 。

[0282] Surface number k A4 A6 A8 A10 A12 S14 -0.2554 5.1854E-06 9.6777E-08 -4.5984E-09 6.9661E-11 -5.7655E-13 S15 0.5180 2.1264E-04 -2.8947E-06 4.5570E-07 -1.5496E-08 2.2532E-10

[0283] Table 16

[0284] Example 9

[0285] The following refers to Figure 9 the optical lens according to Embodiment 9 of the present application.

[0286] As Figure 9 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 second lens L2 and the third lens L3. The seventh lens L7 is an aspherical lens.

[0287] The first lens L1 has a positive optical power, its first side S1 is convex, and its second side S2 is concave.

[0288] The second lens L2 has a negative optical power, its first side S3 is concave, and its second side S4 is convex.

[0289] The third lens L3 has a positive optical power, its first side S6 is concave, and its second side S7 is convex.

[0290] The fourth lens L4 has a negative optical power, its first side S8 is convex, and its second side S9 is concave.

[0291] The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is concave.

[0292] The sixth lens L6 has a negative optical power, its first side S12 is convex, and its second side S13 is concave.

[0293] The seventh lens L7 has a positive optical power, its first side S14 is convex, and its second side S15 is concave.

[0294] 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.

[0295] Table 17 shows the basic parameter table of the optical lens of Embodiment 9, where the unit of the radius of curvature and the thickness / distance is millimeter (mm).

[0296]

[0297] Table 17

[0298] In Embodiment 9, the first side S14 and the second side S15 of the seventh lens L7 are both aspherical surfaces. Table 18 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0299] Surface number k A4 A6 A8 A10 A12 S14 -0.3245 4.0740E-05 6.3602E-07 -1.9535E-08 4.7749E-10 -3.2731E-12 S15 4.2148 1.3273E-04 -1.6661E-07 7.2989E-08 -1.8022E-10 1.1863E-12

[0300] Table 18

[0301] Example 10

[0302] The following refers to Figure 10 to describe the optical lens according to Embodiment 10 of the present application.

[0303] As Figure 10 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 second lens L2 and the third lens L3. The seventh lens L7 is an aspherical lens.

[0304] 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.

[0305] The second lens L2 has a negative optical power, its first side S3 is a concave surface, and its second side S4 is a convex surface.

[0306] The third lens L3 has a positive optical power, its first side S6 is a convex surface, and its second side S7 is a convex surface.

[0307] The fourth lens L4 has a negative optical power, its first side S8 is a convex surface, and its second side S9 is a concave surface.

[0308] 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.

[0309] The sixth lens L6 has a negative optical power, its first side S12 is a convex surface, and its second side S13 is a concave surface.

[0310] 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.

[0311] 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 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 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.

[0312] Table 19 shows the basic parameter table of the optical lens of Embodiment 10, where the unit of the radius of curvature and the thickness / distance is millimeter (mm).

[0313]

[0314]

[0315] Table 19

[0316] In Embodiment 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 10 and A 12 .

[0317] Surface number k A4 A6 A8 A10 A12 S14 -0.3367 3.8908E-05 6.0244E-07 -1.9236E-08 4.7173E-10 -3.1603E-12 S15 4.1736 1.4065E-04 -9.7345E-08 7.3627E-08 -9.7257E-10 3.0415E-11

[0318] Table 20

[0319] Example 11

[0320] The following refers to Figure 11 Describe the optical lens according to Embodiment 11 of the present application.

[0321] As Figure 11 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 second lens L2 and the third lens L3. The seventh lens L7 is an aspherical lens.

[0322] 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.

[0323] 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.

[0324] The third lens L3 has a positive optical power, its first side S6 is concave, and its second side S7 is convex.

[0325] The fourth lens L4 has a negative optical power, its first side S8 is convex, and its second side S9 is concave.

[0326] The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is concave.

[0327] The sixth lens L6 has a negative optical power, its first side S12 is convex, and its second side S13 is concave.

[0328] The seventh lens L7 has a positive optical power, its first side S14 is convex, and its second side S15 is concave.

[0329] 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, 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.

[0330] Table 21 shows the basic parameter table of the optical lens of Embodiment 11, where the units of the radius of curvature and the thickness / distance are both millimeters (mm).

[0331]

[0332]

[0333] Table 21

[0334] In Embodiment 11, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical surfaces. Table 22 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0335] Surface number k A4 A6 A8 A10 A12 S14 -0.3284 3.9817E-05 6.5338E-07 -1.7019E-08 4.3531E-10 -3.2017E-12 S15 4.3863 1.4653E-04 -7.4708E-07 1.5643E-07 -3.1691E-09 3.6440E-11

[0336] Table 22

[0337] Example 12

[0338] The following refers to Figure 12 to describe the optical lens according to Embodiment 12 of the present application.

[0339] As shown Figure 12 in FIG. 1, 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 second lens L2 and the third lens L3. The seventh lens L7 is an aspherical lens.

[0340] 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.

[0341] 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.

[0342] The third lens L3 has a positive focal power. Its first side S6 is a convex surface, and its second side S7 is a convex surface.

[0343] The fourth lens L4 has a negative focal power. Its first side S8 is a convex surface, and its second side S9 is a concave surface.

[0344] 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.

[0345] The sixth lens L6 has a negative focal power. Its first side S12 is a convex surface, and its second side S13 is a concave surface.

[0346] 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.

[0347] 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.

[0348] 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).

[0349]

[0350]

[0351] Table 23

[0352] In Embodiment 12, the first side surface S14 and the second side surface S15 of the seventh lens L7 are both aspherical surfaces. Table 24 gives the conic coefficient k and the high-order term coefficients A4, A6, A8, A 10 and A 12 .

[0353] Surface number k A4 A6 A8 A10 A12 S14 -0.3600 2.7032E-05 1.0675E-06 -2.2053E-08 4.0589E-10 -2.4986E-12 S15 4.3221 1.6968E-04 -1.9671E-06 1.2894E-07 -1.5054E-09 1.3709E-11

[0354] Table 24

[0355] Example 13

[0356] The following refers to Figure 13 to describe an optical lens according to Embodiment 13 of the present application.

[0357] 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 aperture stop STO may be disposed between the second lens L2 and the third lens L3. The seventh lens L7 is an aspherical lens.

[0358] 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.

[0359] 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.

[0360] The third lens L3 has a positive optical power, its first side surface S6 is a concave surface, and its second side surface S7 is a convex surface.

[0361] The fourth lens L4 has a positive optical power, its first side surface S8 is a convex surface, and its second side surface S9 is a convex surface.

[0362] 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.

[0363] The sixth lens L6 has a positive optical power, its first side surface S12 is a convex surface, and its second side surface S13 is a concave surface.

[0364] 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.

[0365] 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.

[0366] Table 25 shows the basic parameter table of the optical lens of Embodiment 13, where the unit of the radius of curvature and the thickness / distance is millimeter (mm).

[0367]

[0368]

[0369] Table 25

[0370] In Embodiment 13, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical surfaces. Table 26 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0371] Surface number k A4 A6 A8 A10 A12 S14 -1.1171 3.4732E-05 1.3838E-06 -2.8914E-08 3.7117E-10 -1.7765E-12 S15 0.4704 3.6618E-04 -1.0057E-05 8.1940E-07 -2.3578E-08 3.3695E-10

[0372] Table 26

[0373] Example 14

[0374] The following refers to Figure 14 to describe the optical lens according to Embodiment 14 of the present application.

[0375] 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 arranged between the second lens L2 and the third lens L3. The seventh lens L7 is an aspherical lens.

[0376] 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.

[0377] The second lens L2 has a negative optical power, its first side S3 is a concave surface, and its second side S4 is a convex surface.

[0378] The third lens L3 has a positive optical power, its first side S6 is a convex surface, and its second side S7 is a convex surface.

[0379] The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex.

[0380] The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is concave.

[0381] The sixth lens L6 has a positive optical power, its first side S12 is convex, and its second side S13 is concave.

[0382] The seventh lens L7 has a positive optical power, its first side S14 is convex, and its second side S15 is concave.

[0383] 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, 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.

[0384] Table 27 shows the basic parameter table of the optical lens of Embodiment 14, where the unit of the radius of curvature and the thickness / distance is millimeter (mm).

[0385]

[0386] Table 27

[0387] In Embodiment 14, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical surfaces. Table 28 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0388] Surface number k A4 A6 A8 A10 A12 S14 -4.7717 7.2279E-05 -2.0410E-07 -5.6738E-08 1.0807E-09 -6.0391E-12 S15 0.6695 2.8544E-04 -2.2955E-05 1.8246E-06 -6.2468E-08 1.0126E-09

[0389] Table 28

[0390] Example 15

[0391] The following refers to Figure 15 Describe the optical lens according to Embodiment 15 of the present application.

[0392] As Figure 15As 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 second lens L2 and the third lens L3. The seventh lens L7 is an aspherical lens.

[0393] 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.

[0394] The second lens L2 has a negative optical power. Its first side S3 is a concave surface, and its second side S4 is a convex surface.

[0395] The third lens L3 has a positive optical power. Its first side S6 is a concave surface, and its second side S7 is a convex surface.

[0396] The fourth lens L4 has a positive optical power. Its first side S8 is a convex surface, and its second side S9 is a concave surface.

[0397] 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.

[0398] 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.

[0399] 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.

[0400] 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.

[0401] Table 29 shows the basic parameter table of the optical lens of Example 15, where the units of the radius of curvature and the thickness / distance are both millimeters (mm).

[0402]

[0403] Table 29

[0404] In Example 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 higher-order term coefficients A4, A6, A8, A for the aspherical surfaces S14, S15 that can be used in Example 15.10 and A 12 。

[0405] Surface number k A4 A6 A8 A10 A12 S14 -1.7400 9.8827E-06 7.0786E-07 -1.9075E-08 2.2853E-10 -9.6883E-13 S15 -0.4450 2.8227E-04 -1.0827E-05 8.5243E-07 -2.5048E-08 3.3667E-10

[0406] Table 30

[0407] Example 16

[0408] The following refers to Figure 16 the optical lens according to Embodiment 16 of the present application for description.

[0409] As Figure 16 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 second lens L2 and the third lens L3. The seventh lens L7 is an aspherical lens.

[0410] 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.

[0411] The second lens L2 has a negative optical power, its first side S3 is a concave surface, and its second side S4 is a convex surface.

[0412] The third lens L3 has a positive optical power, its first side S6 is a convex surface, and its second side S7 is a convex surface.

[0413] The fourth lens L4 has a positive optical power, its first side S8 is a convex surface, and its second side S9 is a concave surface.

[0414] 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.

[0415] 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.

[0416] 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.

[0417] 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.

[0418] Table 31 shows the basic parameter table of the optical lens of Embodiment 16, where the unit of the radius of curvature and the thickness / distance is millimeter (mm).

[0419]

[0420] Table 31

[0421] In Embodiment 16, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical surfaces. Table 32 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0422] Surface number k A4 A6 A8 A10 A12 S14 -1.8308 5.2573E-06 6.6648E-07 -1.8284E-08 2.3275E-10 -1.0098E-12 S15 -0.7268 2.7045E-04 -1.0471E-05 8.0101E-07 -2.2904E-08 3.0030E-10

[0423] Table 32

[0424] Example 17

[0425] The following refers to Figure 17 to describe the optical lens according to Embodiment 17 of the present application.

[0426] As Figure 17 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 second lens L2 and the third lens L3. The seventh lens L7 is an aspherical lens.

[0427] 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.

[0428] 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.

[0429] The third lens L3 has a positive optical power, its first side S6 is a concave surface, and its second side S7 is a convex surface.

[0430] The fourth lens L4 has a positive optical power, its first side S8 is a convex surface, and its second side S9 is a concave surface.

[0431] 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.

[0432] 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.

[0433] 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.

[0434] 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.

[0435] Table 33 shows the basic parameter table of the optical lens of Embodiment 17, where the unit of the radius of curvature and the thickness / distance is millimeter (mm).

[0436]

[0437] Table 33

[0438] In Embodiment 17, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical surfaces. Table 34 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0439] Surface number k A4 A6 A8 A10 A12 S14 -0.1617 1.5067E-05 4.6556E-07 -5.3570E-09 5.6480E-11 -1.5843E-13 S15 5.7772 1.1977E-04 -4.1644E-06 2.2404E-07 -5.1582E-09 5.1441E-11

[0440] Table 34

[0441] Example 18

[0442] The following refers to Figure 18 to describe the optical lens according to Embodiment 18 of the present application.

[0443] As Figure 18 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 second lens L2 and the third lens L3. The seventh lens L7 is an aspherical lens.

[0444] 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.

[0445] 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.

[0446] The third lens L3 has a positive optical power, its first side S6 is a concave surface, and its second side S7 is a convex surface.

[0447] The fourth lens L4 has a positive optical power, its first side S8 is convex, and its second side S9 is convex.

[0448] The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is concave.

[0449] The sixth lens L6 has a positive optical power, its first side S12 is convex, and its second side S13 is concave.

[0450] The seventh lens L7 has a positive optical power, its first side S14 is convex, and its second side S15 is concave.

[0451] 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.

[0452] Table 35 shows the basic parameter table of the optical lens of Embodiment 18, where the units of the radius of curvature and the thickness / distance are both millimeters (mm).

[0453]

[0454]

[0455] Table 35

[0456] In Embodiment 18, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical. Table 36 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0457] Surface number k A4 A6 A8 A10 A12 S14 -0.1912 2.4496E-05 5.1549E-07 -7.0742E-09 7.4527E-11 -2.7898E-13 S15 3.0518 1.6033E-04 -6.0839E-06 3.0818E-07 -6.6604E-09 6.0292E-11

[0458] Table 36

[0459] Example 19

[0460] The following refers to Figure 19 Describe the optical lens according to Embodiment 19 of the present application.

[0461] As Figure 19As shown in the figure, 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 second lens L2 and the third lens L3. The seventh lens L7 is an aspherical lens.

[0462] 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.

[0463] 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.

[0464] The third lens L3 has a positive focal power. Its first side S6 is a convex surface, and its second side S7 is a convex surface.

[0465] The fourth lens L4 has a positive focal power. Its first side S8 is a convex surface, and its second side S9 is a concave surface.

[0466] 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.

[0467] 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.

[0468] 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.

[0469] 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.

[0470] Table 37 shows the basic parameter table of the optical lens of Example 19, where the units of the radius of curvature and the thickness / distance are both millimeters (mm).

[0471]

[0472]

[0473] Table 37

[0474] In Embodiment 19, both the first side surface S14 and the second side surface S15 of the seventh lens L7 are aspherical surfaces. Table 38 shows the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0475] Surface number k A4 A6 A8 A10 A12 S14 -0.2765 1.3417E-05 8.8497E-08 -5.4453E-10 1.6886E-11 -1.2945E-13 S15 3.2336 9.4567E-05 -3.5068E-06 1.6193E-07 -3.3887E-09 2.7159E-11

[0476] Table 38

[0477] Example 20

[0478] The following refers to Figure 20 to describe an optical lens according to Embodiment 20 of the present application.

[0479] As Figure 20 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 second lens L2 and the third lens L3. The seventh lens L7 is an aspherical lens.

[0480] The first lens L1 has a positive optical power. Its first side surface S1 is convex, and its second side surface S2 is concave.

[0481] The second lens L2 has a negative optical power. Its first side surface S3 is concave, and its second side surface S4 is concave.

[0482] The third lens L3 has a positive optical power. Its first side surface S6 is convex, and its second side surface S7 is convex.

[0483] The fourth lens L4 has a positive optical power. Its first side surface S8 is convex, and its second side surface S9 is concave.

[0484] The fifth lens L5 has a positive optical power. Its first side surface S10 is convex, and its second side surface S11 is concave.

[0485] The sixth lens L6 has a positive optical power. Its first side surface S12 is convex, and its second side surface S13 is concave.

[0486] The seventh lens L7 has a positive optical power. Its first side surface S14 is convex, and its second side surface S15 is concave.

[0487] On the second side of the optical lens, an image plane IMA is provided. 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.

[0488] Table 39 shows the basic parameter table of the optical lens of Embodiment 20, where the units of the radius of curvature and the thickness / distance are both millimeters (mm).

[0489]

[0490]

[0491] Table 39

[0492] In Embodiment 20, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical. Table 40 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0493] Surface number k A4 A6 A8 A10 A12 S14 -0.3894 4.2775E-06 7.2059E-07 -1.3157E-08 1.2816E-10 -5.3475E-13 S15 2.2247 1.4591E-04 -7.1702E-06 3.8218E-07 -9.2952E-09 9.3368E-11

[0494] Table 40

[0495] Example 21

[0496] The following refers to Figure 21 to describe the optical lens according to Embodiment 21 of the present application.

[0497] As Figure 21 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 second lens L2 and the third lens L3. The seventh lens L7 is an aspherical lens.

[0498] 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.

[0499] The second lens L2 has a negative optical power, its first side S3 is a concave surface, and its second side S4 is a convex surface.

[0500] The third lens L3 has a positive optical power, its first side S6 is a concave surface, and its second side S7 is a convex surface.

[0501] The fourth lens L4 has a negative optical power, its first side S8 is convex, and its second side S9 is concave.

[0502] The fifth lens L5 has a positive optical power, its first side S10 is convex, and its second side S11 is concave.

[0503] The sixth lens L6 has a positive optical power, its first side S12 is convex, and its second side S13 is concave.

[0504] The seventh lens L7 has a positive optical power, its first side S14 is convex, and its second side S15 is concave.

[0505] 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, 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.

[0506] Table 41 shows the basic parameter table of the optical lens of Embodiment 21, where the units of the radius of curvature and the thickness / distance are both millimeters (mm).

[0507]

[0508]

[0509] Table 41

[0510] In Embodiment 21, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical surfaces. Table 42 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0511] Surface number k A4 A6 A8 A10 A12 S14 -0.4153 2.9745E-05 6.6674E-07 -1.7312E-08 3.1979E-10 -2.0659E-12 S15 3.4658 1.3404E-04 -5.5985E-07 1.5822E-07 -4.6427E-09 7.9896E-11

[0512] Table 42

[0513] Example 22

[0514] The following refers to Figure 22 Describe the optical lens according to Embodiment 22 of the present application.

[0515] As Figure 22As 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 second lens L2 and the third lens L3. The seventh lens L7 is an aspherical lens.

[0516] The first lens L1 has a positive focal power, its first side S1 is convex, and its second side S2 is concave.

[0517] The second lens L2 has a negative focal power, its first side S3 is concave, and its second side S4 is convex.

[0518] The third lens L3 has a positive focal power, its first side S6 is convex, and its second side S7 is convex.

[0519] The fourth lens L4 has a negative focal power, its first side S8 is convex, and its second side S9 is concave.

[0520] The fifth lens L5 has a positive focal power, its first side S10 is convex, and its second side S11 is concave.

[0521] The sixth lens L6 has a positive focal power, its first side S12 is convex, and its second side S13 is concave.

[0522] The seventh lens L7 has a positive focal power, its first side S14 is convex, and its second side S15 is concave.

[0523] 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.

[0524] Table 43 shows the basic parameter table of the optical lens of Example 22, where the unit of the radius of curvature and the thickness / distance is millimeter (mm).

[0525]

[0526] Table 43

[0527] In Example 22, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical. Table 44 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A for the aspherical surfaces S14, S15 in Example 22.10 and A 12 。

[0528] Surface number k A4 A6 A8 A10 A12 S14 -0.3666 3.1161E-05 5.9526E-07 -1.3581E-08 3.1311E-10 -2.1103E-12 S15 3.3569 1.3946E-04 -1.8712E-06 2.9624E-07 -9.8866E-09 1.5060E-10

[0529] Table 44

[0530] Example 23

[0531] The following refers to Figure 23 Describe the optical lens according to Embodiment 23 of the present application.

[0532] As Figure 23 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 second lens L2 and the third lens L3. The seventh lens L7 is an aspherical lens.

[0533] The first lens L1 has a positive focal power, its first side S1 is convex, and its second side S2 is concave.

[0534] The second lens L2 has a negative focal power, its first side S3 is concave, and its second side S4 is concave.

[0535] The third lens L3 has a positive focal power, its first side S6 is convex, and its second side S7 is convex.

[0536] The fourth lens L4 has a negative focal power, its first side S8 is convex, and its second side S9 is concave.

[0537] The fifth lens L5 has a positive focal power, its first side S10 is convex, and its second side S11 is concave.

[0538] The sixth lens L6 has a positive focal power, its first side S12 is convex, and its second side S13 is concave.

[0539] The seventh lens L7 has a positive focal power, its first side S14 is convex, and its second side S15 is concave.

[0540] 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.

[0541] Table 45 shows the basic parameter table of the optical lens of Embodiment 23, where the units of the radius of curvature and the thickness / distance are both millimeters (mm).

[0542]

[0543] Table 45

[0544] In Embodiment 23, the first side surface S14 and the second side surface S15 of the seventh lens L7 are both aspherical surfaces. Table 46 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0545] Surface number k A4 A6 A8 A10 A12 S14 -0.4383 1.5318E-05 1.2062E-06 -2.4081E-08 2.8583E-10 -1.3519E-12 S15 4.1479 1.4931E-04 -2.7459E-06 2.3220E-07 -6.7996E-09 1.0017E-10

[0546] Table 46

[0547] Example 24

[0548] The following refers to Figure 24 to describe the optical lens according to Embodiment 24 of the present application.

[0549] As Figure 24 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 second lens L2 and the third lens L3. The seventh lens L7 is an aspherical lens.

[0550] 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.

[0551] 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 concave surface.

[0552] The third lens L3 has a positive optical power, its first side surface S6 is a concave surface, and its second side surface S7 is a convex surface.

[0553] The fourth lens L4 has a negative optical power, its first side surface S8 is a convex surface, and its second side surface S9 is a concave surface.

[0554] 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.

[0555] The sixth lens L6 has a positive optical power, its first side surface S12 is a convex surface, and its second side surface S13 is a concave surface.

[0556] 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.

[0557] 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.

[0558] Table 47 shows the basic parameter table of the optical lens of Example 24, where the units of the radius of curvature and the thickness / distance are both millimeters (mm).

[0559]

[0560] Table 47

[0561] In Example 24, both the first side S14 and the second side S15 of the seventh lens L7 are aspherical surfaces. Table 48 gives the conic coefficient k and the higher-order term coefficients A4, A6, A8, A 10 and A 12 .

[0562] Surface number k A4 A6 A8 A10 A12 S14 -0.3274 1.1588E-05 2.8848E-06 -6.9256E-08 8.9690E-10 -4.5961E-12 S15 2.7376 4.6654E-04 -3.5501E-05 2.6393E-06 -8.6989E-08 1.2224E-09

[0563] Table 48

[0564] Table 49 gives the basic parameters of the optical lenses in Examples 1-24, such as ENPD, D, H, FOV, θ, F, BFL, TTL, TL, F1, F2, F3, F5, D3, D7, D8, SAG3, and etc.

[0565]

[0566]

[0567] Table 49 In summary, the conditional expressions of each example in Examples 1-24 satisfy the relationships shown in Table 50.

[0568]

[0569]

[0570]

[0571] Table 50

[0572] The present application also provides an electronic device, which includes the optical lens in the above exemplary embodiments and an imaging element for converting the optical image formed by the optical lens into an electrical signal. The imaging element is disposed on the imaging surface, and may be, for example, a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor device (CMOS). When the optical lens is used as a projection lens or a lidar transmitting-end lens, the electronic device may include a light source or a laser disposed on the image source surface.

[0573] 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 solution 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, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) disclosed in the present application that have similar functions.

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 positive optical power, whose first side is convex and second side is concave; A second lens with negative optical power, whose first side is concave; A third lens with positive optical power, whose second side is convex; A fourth lens with optical power, whose first side is convex; A fifth lens with positive optical power, whose first side is convex and second side is concave; A sixth lens with optical power, whose first side is convex and second side is concave; and A seventh lens with optical power, whose first side is convex and second side is concave.

2. The optical lens according to claim 1, characterized in that, 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.

3. The optical lens according to claim 1, characterized in that, 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 satisfy: D / H / θ ≤ 6.

5.

4. The optical lens according to claim 1, characterized in that, The air gap d23 between the second lens and the third lens on the optical axis and the overall focal length value F of the optical lens satisfy: d23 / F ≥ 0.

1.

5. The optical lens according to claim 1, characterized in that, 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 ≤ (D7 + D8) / 2 / F ≤ 3.

5.

6. The optical lens according to claim 1, characterized in that, 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.

1.

7. The optical lens according to claim 1, characterized in that, 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.

5.

8. The optical lens according to claim 1, characterized in that, The focal length value F3 of the third lens and the focal length value F5 of the fifth lens satisfy: F3 / F5 ≤ 2.

8.

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 positive optical power; A second lens with negative optical power; A third lens with positive optical power; A fourth lens with optical power; A fifth lens with positive optical power; A sixth lens with optical power; and A seventh lens with optical power; Wherein, the air gap d23 between the second lens and the third lens on the optical axis and the overall focal length value F of the optical lens satisfy: d23 / F ≥ 0.

1.

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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