Optical lenses and electronic devices

Abstract

This application discloses an optical lens and an electronic device including the optical lens. The optical lens, along the optical axis from the object side to the image side, sequentially includes: a first lens having negative optical power and a convex object side and a concave image side; a second lens having optical power and a concave object side and a convex image side; a third lens having positive optical power; a fourth lens having positive optical power and a convex object side and a convex image side; a fifth lens having positive optical power and a convex object side and a convex image side; a sixth lens having negative optical power; and a seventh lens having optical power. The optical lens has seven lenses with optical power. The overall focal length F, maximum field of view FOV, image height H corresponding to the maximum field of view, radius of curvature R11 of the object side of the first lens, spacing d4 between the second and third lenses on the optical axis, and total optical length TTL of the optical lens satisfy the following: 55°≤(FOV×F) / H≤70°; |F / R11|≤0.4; 0.00266≤d4 / TTL≤0.004.

Description

[0001] Divisional application statement

[0002] This application is a divisional application of Chinese invention patent application filed on May 27, 2020, entitled "Optical Lens and Electronic Device" with application number 202010461914.3. Technical Field

[0003] This application relates to the field of optical components, and more specifically to an optical lens and an electronic device including the optical lens. Background Technology

[0004] In recent years, automotive driver assistance systems have developed rapidly, and automotive optical lenses, as the eyes of vehicles to acquire external information, have played an irreplaceable role. To acquire information more accurately, the system needs to be equipped with larger, higher-resolution chips, thus placing increasingly higher demands on the resolution of the optical lenses themselves. To meet these higher imaging quality requirements, more lens structures are often chosen, but this increases costs and significantly hinders lens miniaturization.

[0005] In addition, for safety reasons, automotive optical lenses used in the field of autonomous driving have high stability requirements and need to be able to cope with various harsh environments in order to avoid significant degradation of lens performance under different environments.

[0006] Therefore, the market currently needs an optical lens that can be matched with large chips, has high resolution, and also takes into account low cost, miniaturization, low distortion, and good temperature performance, so as to meet the requirements of autonomous driving applications. Summary of the Invention

[0007] One aspect of this application provides an optical lens that, along the optical axis from the object side to the image side, sequentially includes: a first lens with negative optical power, having a convex object side and a concave image side; a second lens with optical power, having a concave object side and a convex image side; a third lens with positive optical power; a fourth lens with positive optical power, having a convex object side and a convex image side; a fifth lens with positive optical power, having a convex object side and a convex image side; a sixth lens with negative optical power; and a seventh lens with positive optical power, wherein the fifth lens and the sixth lens form a cemented lens.

[0008] In one embodiment, the object-side surface of the third lens may be convex, and the image-side surface may be concave.

[0009] In one embodiment, the object-side surface of the third lens may be convex, and the image-side surface may be convex.

[0010] In one embodiment, the object-side surface of the sixth lens may be concave, and the image-side surface may be concave.

[0011] In one embodiment, the object-side surface of the sixth lens may be concave, and the image-side surface may be convex.

[0012] In one embodiment, the object-side surface of the seventh lens may be convex, and the image-side surface may be convex.

[0013] In one embodiment, the object-side surface of the seventh lens may be convex, and the image-side surface may be concave.

[0014] In one implementation, the total optical length (TTL) of the optical lens and the total focal length (F) of the optical lens can satisfy: TTL / F≤10.

[0015] In one embodiment, the maximum field of view (FOV) of the optical lens, the maximum aperture D of the object side of the first lens corresponding to the maximum field of view of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens can satisfy: D / H / FOV≤0.02.

[0016] In one embodiment, the optical back focal length (BFL) of the optical lens and the lens group length (TL) of the optical lens can satisfy: BFL / TL≥0.1.

[0017] In one embodiment, the total focal length F of the optical lens, the maximum field of view (FOV) of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens can satisfy: 50≤(FOV×F) / H≤70.

[0018] In one embodiment, the focal length F3 of the third lens and the focal length F4 of the fourth lens can satisfy: |F3 / F4|≥0.6.

[0019] In one embodiment, the focal length F4 of the fourth lens and the focal length F5 of the fifth lens can satisfy: 0.5≤|F4 / F5|≤2.5.

[0020] In one embodiment, the focal length F5 of the fifth lens and the focal length F6 of the sixth lens can satisfy: 0.5≤|F5 / F6|≤3.5.

[0021] In one embodiment, the total focal length F of the optical lens and the radius of curvature R11 of the object side surface of the first lens can satisfy: |F / R11|≤0.5.

[0022] In one embodiment, the radius of curvature R12 of the image side of the first lens and the radius of curvature R21 of the object side of the second lens can satisfy: R12 / R21≥-1.0.

[0023] In one embodiment, the radius of curvature R41 of the object side of the fourth lens and the radius of curvature R42 of the image side of the fourth lens can satisfy: R41 / R42≤-0.2.

[0024] In one embodiment, the total focal length F of the optical lens, the maximum field of view (FOV) of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens can satisfy: (H-FOV×F) / FOV×F≤-0.4.

[0025] In one embodiment, the distance d4 between the second lens and the third lens on the optical axis can satisfy the following condition: d4 / TTL≤0.004.

[0026] In one embodiment, the radius of curvature R11 of the object side of the first lens and the radius of curvature R12 of the image side of the first lens can satisfy: 2.0≤R11 / R12≤8.0.

[0027] In one embodiment, the total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy: F / H≤0.55.

[0028] Another aspect of this application provides an optical lens that, along the optical axis from the object side to the image side, sequentially includes: a first lens with a convex object side and a concave image side; a second lens with a concave object side and a convex image side; a third lens; a fourth lens with a convex object side and a convex image side; a fifth lens with a convex object side and a convex image side; a sixth lens; a seventh lens; and a cemented lens formed by the fifth and sixth lenses. The overall focal length F of the optical lens, the maximum field of view (FOV) of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens can satisfy: (H-FOV×F) / FOV×F≤-0.4.

[0029] In one embodiment, the third lens may have positive optical power, with its object side being convex and its image side being concave.

[0030] In one embodiment, the third lens may have positive optical power, with its object-side surface being convex and its image-side surface being convex.

[0031] In one embodiment, the sixth lens may have negative optical power, with its object side being concave and its image side being concave.

[0032] In one embodiment, the sixth lens may have negative optical power, with its object side being concave and its image side being convex.

[0033] In one embodiment, the seventh lens may have positive optical power, with its object-side surface being convex and its image-side surface being convex.

[0034] In one embodiment, the seventh lens may have positive optical power, with its object side being convex and its image side being concave.

[0035] In one implementation, the total optical length (TTL) of the optical lens and the total focal length (F) of the optical lens can satisfy: TTL / F≤10.

[0036] In one embodiment, the maximum field of view (FOV) of the optical lens, the maximum aperture D of the object side of the first lens corresponding to the maximum field of view of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens can satisfy: D / H / FOV≤0.02.

[0037] In one embodiment, the optical back focal length (BFL) of the optical lens and the lens group length (TL) of the optical lens can satisfy: BFL / TL≥0.1.

[0038] In one embodiment, the total focal length F of the optical lens, the maximum field of view (FOV) of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens can satisfy: 50≤(FOV×F) / H≤70.

[0039] In one embodiment, the focal length F3 of the third lens and the focal length F4 of the fourth lens can satisfy: |F3 / F4|≥0.6.

[0040] In one embodiment, the focal length F4 of the fourth lens and the focal length F5 of the fifth lens can satisfy: 0.5≤|F4 / F5|≤2.5.

[0041] In one embodiment, the focal length F5 of the fifth lens and the focal length F6 of the sixth lens can satisfy: 0.5≤|F5 / F6|≤3.5.

[0042] In one embodiment, the total focal length F of the optical lens and the radius of curvature R11 of the object side surface of the first lens can satisfy: |F / R11|≤0.5.

[0043] In one embodiment, the radius of curvature R12 of the image side of the first lens and the radius of curvature R21 of the object side of the second lens can satisfy: R12 / R21≥-1.0.

[0044] In one embodiment, the radius of curvature R41 of the object side of the fourth lens and the radius of curvature R42 of the image side of the fourth lens can satisfy: R41 / R42≤-0.2.

[0045] In one embodiment, the distance d4 between the second lens and the third lens on the optical axis satisfies the following condition with respect to the total optical length TTL of the optical lens: d4 / TTL≤0.004.

[0046] In one embodiment, the radius of curvature R11 of the object side of the first lens and the radius of curvature R12 of the image side of the first lens can satisfy: 2.0≤R11 / R12≤8.0.

[0047] In one embodiment, the total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy: F / H≤0.55.

[0048] In another aspect, this application provides an electronic device. This electronic device includes an optical lens according to this application and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

[0049] The optical lens provided in this application employs multiple lenses, such as the first to the seventh lens. By optimizing the shape of the lenses, rationally allocating the optical power of each lens, and forming a cemented lens, at least one of the following beneficial effects can be achieved: high resolution, miniaturization, small front-end diameter, large field of view, low distortion, and low cost. Attached Figure Description

[0050] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings. In the drawings:

[0051] Figure 1 A schematic diagram of the structure of an optical lens according to Embodiment 1 of this application is shown;

[0052] Figure 2 A schematic diagram of the structure of an optical lens according to Embodiment 2 of this application is shown;

[0053] Figure 3 A schematic diagram of the structure of an optical lens according to Embodiment 3 of this application is shown;

[0054] Figure 4 A schematic diagram of the structure of an optical lens according to Embodiment 4 of this application is shown;

[0055] Figure 5 A schematic diagram of the structure of an optical lens according to Embodiment 5 of this application is shown;

[0056] Figure 6 A schematic diagram of the structure of an optical lens according to Embodiment 6 of this application is shown;

[0057] Figure 7 A schematic diagram of the structure of an optical lens according to Embodiment 7 of this application is shown;

[0058] Figure 8 A schematic diagram of the structure of an optical lens according to Embodiment 8 of this application is shown;

[0059] Figure 9A schematic diagram of the structure of an optical lens according to Embodiment 9 of this application is shown; and

[0060] Figure 10 A schematic diagram of the structure of an optical lens according to Embodiment 10 of this application is shown. Detailed Implementation

[0061] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0062] It should be noted that in this specification, the terms "first," "second," "third," etc., are used only to distinguish one feature from another and do not imply any limitation on the features. Therefore, without departing from the teachings of this application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0063] In the accompanying drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are illustrated by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not strictly to scale.

[0064] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the location of the convexity 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 location of the concaveness 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 subject is called the object-side surface of the lens, and the surface of each lens closest to the imaging plane is called the image-side surface of the lens.

[0065] It should also be understood that the terms "comprising," "including," "having," "containing," and / or "comprising," when used in this specification, indicate 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. Furthermore, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features, not individual elements in the list. Additionally, when describing embodiments of this application, the word "may" is used to mean "one or more embodiments of this application." And the term "exemplary" is intended to refer to an example or illustration.

[0066] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms (e.g., those defined in common dictionaries) shall be interpreted as having the meaning consistent with their meaning in the context of the relevant art and shall not be interpreted in an idealized or overly formal sense unless expressly so specified herein.

[0067] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0068] The features, principles and other aspects of this application are described in detail below.

[0069] An optical lens according to an exemplary embodiment of this application may include, for example, seven lenses with optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. These seven lenses are arranged sequentially along the optical axis from the object side to the image side.

[0070] The optical lens according to an exemplary embodiment of this application may further include a photosensitive element disposed on the imaging surface. Optionally, the photosensitive element disposed on the imaging surface may be a photocoupled device (CCD) or a complementary metal oxide semiconductor device (CMOS).

[0071] The first lens can have negative optical power, which can improve the image quality of the optical lens, prevent excessive divergence of object-side light, and help control the aperture of the rear lens. Arranging the first lens in a meniscus shape, with its object-side surface being convex and its image-side surface being concave, can collect as much light as possible from a large field of view into the rear system, thereby effectively increasing the amount of light transmitted and achieving a large overall field of view. At the same time, arranging the object-side surface of the first lens as convex facilitates the sliding off of water droplets in practical use environments (such as rain and snow), effectively reducing the impact of harsh environments on imaging.

[0072] The second lens can have positive or negative optical power, which helps to further converge or diverge light, thereby reducing chromatic aberration in the system by adjusting the light. The object-side and image-side surfaces of the second lens are preferably arranged as aspherical surfaces to improve the resolving quality of the optical lens.

[0073] The third lens can have positive optical power, which is beneficial for converging and adjusting light rays to ensure a smooth optical transition to the rear lens; it can also balance the spherical aberration introduced by the first and second lenses.

[0074] The fourth lens can have positive optical power, which helps to converge and adjust light rays to ensure a smooth optical transition to the rear lens. The object-side and image-side surfaces of the fourth lens are preferably arranged as aspherical surfaces to further improve the resolving quality of the optical lens.

[0075] The fifth lens can have positive optical power, and the sixth lens can have negative optical power. The fifth and sixth lenses are combined to form a cemented lens.

[0076] As is known to those skilled in the art, cemented lenses can be used to minimize or eliminate chromatic aberration. The use of cemented lenses in optical lenses can improve image quality and reduce light energy reflection loss, thereby enhancing the sharpness of the image. Furthermore, the use of cemented lenses can simplify assembly procedures in lens manufacturing.

[0077] By cementing the image-side of the fifth lens with the object-side of the sixth lens to form a cemented lens, the light passing through the fourth lens can be smoothly transitioned to the imaging plane. This helps to reduce the air gap between the lenses and the overall length of the system. Furthermore, it can fully correct various aberrations in the optical system, thereby improving the resolution of the optical lens and optimizing optical performance such as distortion and chief ray angle, while maintaining a more compact structure.

[0078] Using cemented lenses can achieve the following beneficial effects: it helps to reduce the air gap between the fifth and sixth lenses, reducing the overall length of the optical system; it reduces the assembly components between the fifth and sixth lenses, reducing the processing steps of the optical lens and lowering the manufacturing cost of the lens; it reduces the tolerance sensitivity of the lens unit caused by tilting / eccentricity during the assembly process; it reduces the light loss caused by reflection between lenses, improving the illumination of the optical lens; and it further reduces the field curvature of the optical system, correcting the off-axis point aberration of the system.

[0079] The seventh lens can have positive optical power, which can smoothly transition light rays passing through the cemented lens to the imaging plane, reduce the overall length of the optical lens, correct astigmatism and field curvature of the system, and improve the resolution of the optical lens. The object-side and image-side surfaces of the seventh lens are preferably arranged as aspherical mirrors to further improve the resolving quality of the optical lens.

[0080] Optionally, an aperture stop can be provided between the third and fourth lenses to limit the light beam, thereby further improving the image quality of the lens. When the aperture stop is positioned between the third and fourth lenses, it facilitates the effective convergence of light entering the optical system, thereby reducing the overall length of the optical system and the front aperture of the lens. However, it should be noted that the position of the aperture stop disclosed herein is merely an example and not a limitation; in alternative embodiments, the aperture stop can be positioned in other locations as needed.

[0081] Optionally, the aforementioned optical lens may also include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0082] In an exemplary embodiment, at least one of the mirror surfaces of each lens is an aspherical mirror surface; that is, at least one mirror surface from the object-side surface of the first lens to the image-side surface of the seventh lens is an aspherical mirror surface. An aspherical lens is characterized by a continuously changing curvature from the lens center to the lens periphery. Unlike a spherical lens, which has a constant curvature from the lens center to the lens periphery, an aspherical lens has better radius of curvature characteristics, offering advantages in improving distortion aberrations and astigmatism. By using an aspherical lens, aberrations occurring during imaging can be eliminated as much as possible, thereby improving image quality. Optionally, at least one of the object-side and image-side surfaces of each of the first, second, third, fourth, fifth, sixth, and seventh lenses is an aspherical mirror surface. Optionally, both the object-side and image-side surfaces of each of the first, second, third, fourth, fifth, sixth, and seventh lenses are aspherical mirror surfaces.

[0083] In an exemplary embodiment, the total optical length (TTL) of the optical lens and the total focal length (F) of the optical lens can satisfy: TTL / F ≤ 10. For example, TTL / F ≤ 9. By constraining the ratio of the total optical length to the total focal length of the system within a reasonable range, the total length of the optical lens can be effectively reduced, thereby achieving miniaturization of the optical lens.

[0084] In an exemplary embodiment, the maximum field of view (FOV) of the optical lens, the maximum aperture D of the object-side surface of the first lens corresponding to the maximum field of view, and the image height H corresponding to the maximum field of view can satisfy: D / H / FOV ≤ 0.02. For example, D / H / FOV ≤ 0.015. Reasonably controlling the relationship between the maximum field of view, the maximum aperture D of the object-side surface of the first lens corresponding to the maximum field of view, and the image height H corresponding to the maximum field of view can ensure a small front-end diameter of the optical lens, which is beneficial for miniaturization; it can also shorten the overall optical length of the lens, reduce the lens's sensitivity to the modulation transfer function, improve lens production yield, and reduce production costs.

[0085] In an exemplary embodiment, the optical back focal length (BFL) and the lens group length (TL) of the optical lens can satisfy the following condition: BFL / TL ≥ 0.1. For example, BFL / TL ≥ 0.11. By constraining the ratio of the optical back focal length to the lens group length of the optical lens to a reasonable range, it is beneficial to achieve a longer back focal length while achieving miniaturization, and it is also beneficial for module assembly.

[0086] In an exemplary embodiment, the overall focal length F of the optical lens, the maximum field of view (FOV) of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens can satisfy: 50 ≤ (FOV × F) / H ≤ 70. For example, 55 ≤ (FOV × F) / H ≤ 65. By reasonably controlling the relationship between the overall focal length F of the optical lens, the maximum field of view of the optical lens, and the image height corresponding to the maximum field of view of the optical lens, a large angular resolution of the optical lens can be achieved; this helps to satisfy the requirements of small distortion and large field of view of the optical lens while improving the overall effect of the optical system.

[0087] In an exemplary embodiment, the focal length F3 of the third lens and the focal length F4 of the fourth lens can satisfy: |F3 / F4|≥0.6. For example, |F3 / F4|≥0.7 constrains the ratio of the focal lengths of the third lens and the fourth lens to be within a reasonable range, making the adjacent third and fourth lenses very close together, which is beneficial for the smooth transition of light to the rear imaging plane and improves the resolution quality of the optical lens.

[0088] In an exemplary embodiment, the focal length F4 of the fourth lens and the focal length F5 of the fifth lens can satisfy: 0.5 ≤ |F4 / F5| ≤ 2.5. For example, 1.0 ≤ |F4 / F5| ≤ 2.0. By constraining the ratio of the focal lengths of the fourth and fifth lenses within a reasonable range, the adjacent fourth and fifth lenses are kept close together, which facilitates a smooth transition of light to the rear imaging plane and improves the resolving quality of the optical lens.

[0089] In an exemplary embodiment, the focal length F5 of the fifth lens and the focal length F6 of the sixth lens can satisfy: 0.5 ≤ |F5 / F6| ≤ 3.5. For example, 1.0 ≤ |F5 / F6| ≤ 3.0. By constraining the ratio of the focal lengths of the fifth and sixth lenses within a reasonable range, the adjacent fifth and sixth lenses are kept close together, which facilitates a smooth transition of light to the rear imaging plane and improves the resolving quality of the optical lens.

[0090] In an exemplary embodiment, the overall focal length F of the optical lens and the radius of curvature R11 of the object-side surface of the first lens can satisfy: |F / R11|≤0.5. For example, |F / R11|≤0.4. By ensuring that the ratio of the overall focal length F of the optical lens to the radius of curvature of the object-side surface of the first lens is within a reasonable range, the problem of an excessively small radius of curvature of the object-side surface of the first lens can be avoided, as well as aberrations generated by the system when light is incident can be effectively avoided, and the manufacturing process of the first lens is also beneficial.

[0091] In an exemplary embodiment, the radius of curvature R12 of the image-side surface of the first lens and the radius of curvature R21 of the object-side surface of the second lens can satisfy: R12 / R21 ≥ -1.0. For example, R12 / R21 ≥ -0.9. By constraining the ratio of the radii of curvature of the image-side surface of the first lens to the object-side surface of the second lens within a reasonable range, aberrations of the optical system can be corrected, and it can be ensured that when light rays exiting from the first lens are incident on the object-side surface of the second lens, the incident light rays are relatively smooth, thereby reducing the tolerance sensitivity of the optical lens.

[0092] In an exemplary embodiment, the radius of curvature R41 of the object-side surface of the fourth lens and the radius of curvature R42 of the image-side surface of the fourth lens can satisfy: R41 / R42 ≤ -0.2. For example, R41 / R42 ≤ -0.25. By constraining the ratio of the radii of curvature of the object-side surface to the image-side surface of the fourth lens within a reasonable range, the tolerance sensitivity of the fourth lens can be reduced, which is beneficial to the assembly of the optical lens.

[0093] In an exemplary embodiment, the overall focal length F of the optical lens, the maximum field of view (FOV) of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens can satisfy: (H-FOV×F) / FOV×F≤-0.4. For example, (H-FOV×F) / FOV×F≤-0.45. By reasonably controlling the relationship between the overall focal length F of the optical lens, the maximum field of view of the optical lens, and the image height corresponding to the maximum field of view of the optical lens, it is possible to ensure that the focal length of the lens is increased while keeping the field of view and the size of the imaging plane unchanged, thus highlighting the imaging effect of the central area of ​​the imaging plane of the lens.

[0094] In an exemplary embodiment, the distance d4 between the second and third lenses on the optical axis and the total optical length TTL of the optical lens can satisfy: d4 / TTL ≤ 0.004. For example, d4 / TTL ≤ 0.0035. By constraining the ratio of the distance between the second and third lenses on the optical axis to the total optical length of the optical lens within a reasonable range, adjacent second and third lenses can be placed closer together, which is beneficial for a smooth transition of light and improves the resolving quality of the optical lens.

[0095] In an exemplary embodiment, the radius of curvature R11 of the object-side surface of the first lens and the radius of curvature R12 of the image-side surface of the first lens can satisfy: 2.0 ≤ R11 / R12 ≤ 8.0. For example, 3.2 ≤ R11 / R12 ≤ 6.0. By constraining the ratio of the radii of curvature of the object-side surface to the image-side surface of the first lens within a reasonable range, a first lens with a special shape can be provided, thereby improving the resolving power of the optical lens.

[0096] In an exemplary embodiment, the total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens can satisfy: F / H ≤ 0.55. For example, F / H ≤ 0.50. By constraining the ratio of the total focal length F of the optical lens to the image height corresponding to the maximum field of view of the optical lens within a reasonable range, it is beneficial to improve the resolving quality of the optical lens.

[0097] The optical lens according to the above embodiments of this application can employ multiple lens elements, such as the seven elements described above. By rationally allocating the optical power, surface shape, focal length, and radius of curvature of each lens, incident light can be effectively converged, the overall optical length of the optical lens can be shortened, and the manufacturability of the optical lens can be improved, making the optical lens more conducive to production and processing. The optical lens according to the above embodiments of this application can have characteristics such as high resolution, low cost, long back focal length, good temperature performance, miniaturization, large aperture, small front aperture, and simple structure due to the rational use of cemented parts.

[0098] However, those skilled in the art will understand that the number of lenses constituting the optical lens can be varied to obtain the various results and advantages described herein without departing from the technical solutions claimed in this application. For example, although seven lenses are described as an example in the embodiments, the optical lens is not limited to including seven lenses. If desired, the optical lens may also include other numbers of lenses.

[0099] Specific embodiments of the optical lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.

[0100] Example 1

[0101] The following is for reference Figure 1 The optical lens according to Embodiment 1 of this application is described. Figure 1 This is a schematic diagram showing the structure of an optical lens according to Embodiment 1 of this application.

[0102] like Figure 1 As shown, the optical lens includes, in sequence from the object side to the image side along the optical axis: first lens L1, second lens L2, third lens L3, aperture stop STO, fourth lens L4, fifth lens L5, sixth lens L6, and seventh lens L7.

[0103] The first lens L1 is a meniscus lens with negative optical power. Its object-side surface S1 is convex, and its image-side surface S2 is concave. Both the object-side surface S1 and the image-side surface S2 of the first lens L1 are spherical.

[0104] The second lens L2 is a meniscus lens with negative optical power. Its object-side surface S3 is concave, and its image-side surface S4 is convex. Both the object-side surface S3 and the image-side surface S4 of the second lens L2 are aspherical.

[0105] The third lens L3 is a meniscus lens with positive optical power. Its object-side surface S5 is convex, and its image-side surface S6 is concave. Both the object-side surface S5 and the image-side surface S6 of the third lens L3 are spherical.

[0106] The fourth lens L4 is a biconvex lens with positive optical power. Its object-side surface S8 is convex, and its image-side surface S9 is convex. Both the object-side surface S8 and the image-side surface S9 of the fourth lens L4 are spherical.

[0107] The fifth lens L5 is a biconvex lens with positive optical power. Its object-side surface S10 is convex, and its image-side surface S11 is convex. Both the object-side surface S10 and the image-side surface S11 of the fifth lens L5 are spherical.

[0108] The sixth lens L6 is a biconcave lens with negative optical power. Its object-side surface S11 is concave, and its image-side surface S12 is concave. Both the object-side surface S11 and the image-side surface S12 of the sixth lens L6 are spherical.

[0109] The seventh lens L7 is a biconvex lens with positive optical power. Its object-side surface S13 is convex, and its image-side surface S14 is convex. Both the object-side surface S13 and the image-side surface S14 of the seventh lens L7 are aspherical.

[0110] In this embodiment, the fifth lens L5 and the sixth lens L6 are combined to form a cemented lens.

[0111] Optionally, the optical lens may also include a filter L8 and / or a protective glass L8 having an object-side surface S15 and an image-side surface S16. The filter L8 can be used to correct color aberrations, and the protective glass L8 can be used to protect the image sensor chip located at the imaging surface IMA. Light from the object passes sequentially through each surface S1 to S16 and is finally imaged on the imaging surface IMA.

[0112] In the optical lens of this embodiment, the aperture stop STO can be set between the third lens L3 and the fourth lens L4 to further improve the imaging quality.

[0113] Table 1 shows the basic parameters of the optical lens of Example 1, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0114]

[0115] Table 1

[0116] In this embodiment, the object-side surface and image-side surface of the second lens L2 and the seventh lens L7 are both aspherical. The surface shape Z of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0117]

[0118] Where Z is the distance vector from the vertex of the aspherical surface at a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature in Table 1 above); k is the conic coefficient; A, B, C, D, E, F, etc. are all higher-order coefficients. Table 2 below shows the conic coefficient k and the higher-order coefficients A, B, C, D, E, F, and G that can be used for the aspherical lens surfaces S3, S4, S13, and S14 in Example 1.

[0119]

[0120]

[0121] Table 2

[0122] Table 3 below shows the optical length TTL (i.e., the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the imaging surface IMA) of the optical lens in Embodiment 1, the total focal length F of the optical lens, the maximum aperture D of the object side surface S1 of the first lens L1 corresponding to the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view FOV of the optical lens, the maximum field of view FOV of the optical lens, the optical back focal length BFL (the distance on the optical axis from the center of the image side surface S14 of the seventh lens L7 to the imaging surface IMA of the optical lens), the lens group length TL (the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the center of the image side surface S14 of the seventh lens L7), the focal length F3 of the third lens L3, the focal length F4 of the fourth lens L4, the focal length F5 of the fifth lens L5, and the focal length F6 of the sixth lens L6.

[0123] TTL(mm) 31.0892 TL(mm) 26.7937 F(mm) 4.0045 F3 (mm) 18.4408 D(mm) 12.4400 F4 (mm) 12.8622 H(mm) 9.0844 F5 (mm) 8.9731 FOV (°) 140 F6 (mm) -4.2489 BFL (mm) 4.2954

[0124] Table 3

[0125] Example 2

[0126] The following is for reference Figure 2 Describes an optical lens according to Embodiment 2 of this application. Figure 2 This is a schematic diagram showing the structure of an optical lens according to Embodiment 2 of this application.

[0127] like Figure 2 As shown, the optical lens includes, in sequence from the object side to the image side along the optical axis: first lens L1, second lens L2, third lens L3, aperture stop STO, fourth lens L4, fifth lens L5, sixth lens L6, and seventh lens L7.

[0128] The first lens L1 is a meniscus lens with negative optical power. Its object-side surface S1 is convex, and its image-side surface S2 is concave. Both the object-side surface S1 and the image-side surface S2 of the first lens L1 are spherical.

[0129] The second lens L2 is a meniscus lens with negative optical power. Its object-side surface S3 is concave, and its image-side surface S4 is convex. Both the object-side surface S3 and the image-side surface S4 of the second lens L2 are aspherical.

[0130] The third lens L3 is a meniscus lens with positive optical power. Its object-side surface S5 is convex, and its image-side surface S6 is concave. Both the object-side surface S5 and the image-side surface S6 of the third lens L3 are spherical.

[0131] The fourth lens L4 is a biconvex lens with positive optical power. Its object-side surface S8 is convex, and its image-side surface S9 is convex. Both the object-side surface S8 and the image-side surface S9 of the fourth lens L4 are spherical.

[0132] The fifth lens L5 is a biconvex lens with positive optical power. Its object-side surface S10 is convex, and its image-side surface S11 is convex. Both the object-side surface S10 and the image-side surface S11 of the fifth lens L5 are spherical.

[0133] The sixth lens L6 is a biconcave lens with negative optical power. Its object-side surface S11 is concave, and its image-side surface S12 is concave. Both the object-side surface S11 and the image-side surface S12 of the sixth lens L6 are spherical.

[0134] The seventh lens L7 is a biconvex lens with positive optical power. Its object-side surface S13 is convex, and its image-side surface S14 is convex. Both the object-side surface S13 and the image-side surface S14 of the seventh lens L7 are aspherical.

[0135] In this embodiment, the fifth lens L5 and the sixth lens L6 are combined to form a cemented lens.

[0136] Optionally, the optical lens may also include a filter L8 and / or a protective glass L8 having an object-side surface S15 and an image-side surface S16. The filter L8 can be used to correct color aberrations, and the protective glass L8 can be used to protect the image sensor chip located at the imaging surface IMA. Light from the object passes sequentially through each surface S1 to S16 and is finally imaged on the imaging surface IMA.

[0137] In the optical lens of this embodiment, the aperture stop STO can be set between the third lens L3 and the fourth lens L4 to further improve the imaging quality.

[0138] Table 4 shows the basic parameters of the optical lens of Example 2, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0139]

[0140] Table 4

[0141] Table 5 below shows the conic coefficient k and the coefficients A, B, C, D, E, F and G of each higher-order term that can be used for the aspherical lens surfaces S3, S4, S13 and S14 in Example 2.

[0142] Face number k A B C D E F G S3 0.5353 -7.5210E-06 7.3668E-06 -8.6720E-07 1.6880E-07 -1.2034E-08 4.3093E-10 -5.7835E-12 S4 -0.8896 -4.1659E-06 6.1399E-07 1.3109E-07 -9.3904E-09 5.2493E-10 -1.6138E-11 2.1193E-13 S13 -3.2178 2.3653E-04 1.9404E-05 -9.5573E-07 4.4926E-07 -5.8573E-08 2.3132E-09 -3.8477E-11 S14 -132.3455 -1.1984E-03 2.0734E-04 -1.6244E-05 6.7567E-07 4.4360E-08 -5.4141E-09 1.5930E-10

[0143] Table 5

[0144] Table 6 below shows the optical length TTL (i.e., the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the imaging surface IMA) of the optical lens in Embodiment 2, the total focal length F of the optical lens, the maximum aperture D of the object side surface S1 of the first lens L1 corresponding to the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view FOV of the optical lens, the maximum field of view FOV of the optical lens, the optical back focal length BFL (the distance on the optical axis from the center of the image side surface S14 of the seventh lens L7 to the imaging surface IMA of the optical lens), the lens group length TL (the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the center of the image side surface S14 of the seventh lens L7), the focal length F3 of the third lens L3, the focal length F4 of the fourth lens L4, the focal length F5 of the fifth lens L5, and the focal length F6 of the sixth lens L6.

[0145] TTL(mm) 31.3877 TL(mm) 26.6798 F(mm) 4.0583 F3 (mm) 19.5887 D(mm) 12.8407 F4 (mm) 12.5236 H(mm) 9.0290 F5 (mm) 8.9401 FOV (°) 140 F6 (mm) -4.2939 BFL (mm) 4.7079

[0146] Table 6

[0147] Example 3

[0148] The following is for reference Figure 3 The optical lens according to Embodiment 3 of this application is described. Figure 3 This is a schematic diagram showing the structure of an optical lens according to Embodiment 3 of this application.

[0149] like Figure 3 As shown, the optical lens includes, in sequence from the object side to the image side along the optical axis: first lens L1, second lens L2, third lens L3, aperture stop STO, fourth lens L4, fifth lens L5, sixth lens L6, and seventh lens L7.

[0150] The first lens L1 is a meniscus lens with negative optical power. Its object-side surface S1 is convex, and its image-side surface S2 is concave. Both the object-side surface S1 and the image-side surface S2 of the first lens L1 are spherical.

[0151] The second lens L2 is a meniscus lens with positive optical power. Its object-side surface S3 is concave, and its image-side surface S4 is convex. Both the object-side surface S3 and the image-side surface S4 of the second lens L2 are aspherical.

[0152] The third lens L3 is a biconvex lens with positive optical power. Its object-side surface S5 is convex, and its image-side surface S6 is convex. Both the object-side surface S5 and the image-side surface S6 of the third lens L3 are spherical.

[0153] The fourth lens L4 is a biconvex lens with positive optical power. Its object-side surface S8 is convex, and its image-side surface S9 is convex. Both the object-side surface S8 and the image-side surface S9 of the fourth lens L4 are spherical.

[0154] The fifth lens L5 is a biconvex lens with positive optical power. Its object-side surface S10 is convex, and its image-side surface S11 is convex. Both the object-side surface S10 and the image-side surface S11 of the fifth lens L5 are spherical.

[0155] The sixth lens L6 is a biconcave lens with negative optical power. Its object-side surface S11 is concave, and its image-side surface S12 is concave. Both the object-side surface S11 and the image-side surface S12 of the sixth lens L6 are spherical.

[0156] The seventh lens L7 is a biconvex lens with positive optical power. Its object-side surface S13 is convex, and its image-side surface S14 is convex. Both the object-side surface S13 and the image-side surface S14 of the seventh lens L7 are aspherical.

[0157] In this embodiment, the fifth lens L5 and the sixth lens L6 are combined to form a cemented lens.

[0158] Optionally, the optical lens may also include a filter L8 and / or a protective glass L8 having an object-side surface S15 and an image-side surface S16. The filter L8 can be used to correct color aberrations, and the protective glass L8 can be used to protect the image sensor chip located at the imaging surface IMA. Light from the object passes sequentially through each surface S1 to S16 and is finally imaged on the imaging surface IMA.

[0159] In the optical lens of this embodiment, the aperture stop STO can be set between the third lens L3 and the fourth lens L4 to further improve the imaging quality.

[0160] Table 7 shows the basic parameters of the optical lens of Example 3, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0161]

[0162]

[0163] Table 7

[0164] Table 8 below shows the conic coefficient k and the coefficients A, B, C, D, E, F and G of each higher-order term that can be used for the aspherical lens surfaces S3, S4, S13 and S14 in Example 3.

[0165] Face number k A B C D E F G S3 1.4743 -1.4187E-04 9.3990E-06 -1.4293E-06 2.3980E-07 -1.9000E-08 7.5766E-10 -1.1690E-11 S4 -1.0840 -5.6427E-05 3.4074E-06 2.7449E-08 -1.2560E-08 7.9147E-10 -2.0674E-11 2.0481E-13 S13 -3.0925 1.1789E-04 3.2921E-05 -4.4977E-06 9.2674E-07 -8.9974E-08 4.4465E-09 -8.6607E-11 S14 -221.9613 -2.6637E-03 2.6839E-04 -1.8173E-05 4.4759E-07 5.2332E-08 -4.2957E-09 1.0208E-10

[0166] Table 8

[0167] Table 9 below shows the optical length TTL (i.e., the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the imaging surface IMA) of the optical lens in Embodiment 3, the total focal length F of the optical lens, the maximum aperture D of the object side surface S1 of the first lens L1 corresponding to the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view FOV of the optical lens, the maximum field of view FOV of the optical lens, the optical back focal length BFL (the distance on the optical axis from the center of the image side surface S14 of the seventh lens L7 to the imaging surface IMA of the optical lens), the lens group length TL (the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the center of the image side surface S14 of the seventh lens L7), the focal length F3 of the third lens L3, the focal length F4 of the fourth lens L4, the focal length F5 of the fifth lens L5, and the focal length F6 of the sixth lens L6.

[0168] TTL(mm) 32.0001 TL(mm) 27.3678 F(mm) 4.00353 F3 (mm) 20.888 D(mm) 14.0204 F4 (mm) 12.3 H(mm) 9.34951 F5 (mm) 10.485 FOV (°) 140 F6 (mm) -4.6207 BFL (mm) 4.6323

[0169] Table 9

[0170] Example 4

[0171] The following is for reference Figure 4 The optical lens according to Embodiment 4 of this application is described. Figure 4 This is a schematic diagram showing the structure of an optical lens according to Embodiment 4 of this application.

[0172] like Figure 4 As shown, the optical lens includes, in sequence from the object side to the image side along the optical axis: first lens L1, second lens L2, third lens L3, aperture stop STO, fourth lens L4, fifth lens L5, sixth lens L6, and seventh lens L7.

[0173] The first lens L1 is a meniscus lens with negative optical power. Its object-side surface S1 is convex, and its image-side surface S2 is concave. Both the object-side surface S1 and the image-side surface S2 of the first lens L1 are spherical.

[0174] The second lens L2 is a meniscus lens with positive optical power. Its object-side surface S3 is concave, and its image-side surface S4 is convex. Both the object-side surface S3 and the image-side surface S4 of the second lens L2 are aspherical.

[0175] The third lens L3 is a biconvex lens with positive optical power. Its object-side surface S5 is convex, and its image-side surface S6 is convex. Both the object-side surface S5 and the image-side surface S6 of the third lens L3 are spherical.

[0176] The fourth lens L4 is a biconvex lens with positive optical power. Its object-side surface S8 is convex, and its image-side surface S9 is convex. Both the object-side surface S8 and the image-side surface S9 of the fourth lens L4 are spherical.

[0177] The fifth lens L5 is a biconvex lens with positive optical power. Its object-side surface S10 is convex, and its image-side surface S11 is convex. Both the object-side surface S10 and the image-side surface S11 of the fifth lens L5 are spherical.

[0178] The sixth lens L6 is a biconcave lens with negative optical power. Its object-side surface S11 is concave, and its image-side surface S12 is concave. Both the object-side surface S11 and the image-side surface S12 of the sixth lens L6 are spherical.

[0179] The seventh lens L7 is a biconvex lens with positive optical power. Its object-side surface S13 is convex, and its image-side surface S14 is convex. Both the object-side surface S13 and the image-side surface S14 of the seventh lens L7 are aspherical.

[0180] In this embodiment, the fifth lens L5 and the sixth lens L6 are combined to form a cemented lens.

[0181] Optionally, the optical lens may also include a filter L8 and / or a protective glass L8 having an object-side surface S15 and an image-side surface S16. The filter L8 can be used to correct color aberrations, and the protective glass L8 can be used to protect the image sensor chip located at the imaging surface IMA. Light from the object passes sequentially through each surface S1 to S16 and is finally imaged on the imaging surface IMA.

[0182] In the optical lens of this embodiment, the aperture stop STO can be set between the third lens L3 and the fourth lens L4 to further improve the imaging quality.

[0183] Table 10 shows the basic parameters of the optical lens of Example 4, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0184]

[0185]

[0186] Table 10

[0187] Table 11 below shows the conic coefficient k and the coefficients A, B, C, D, E, F and G of each higher-order term that can be used for the aspherical lens surfaces S3, S4, S13 and S14 in Example 4.

[0188] Face number k A B C D E F G S3 1.6363 -2.2697E-04 9.3138E-06 -7.5984E-07 1.3508E-07 -1.2029E-08 5.8020E-10 -1.0536E-11 S4 -1.0739 -6.7842E-05 3.7560E-06 8.3653E-09 -9.8000E-09 6.4736E-10 -1.6635E-11 1.6097E-13 S13 -4.0906 2.0986E-04 2.8522E-05 -1.7884E-06 4.5026E-07 -4.6586E-08 2.4352E-09 -4.8409E-11 S14 -200.0000 -1.6612E-03 2.7079E-04 -1.7987E-05 4.7030E-07 5.1945E-08 -4.4923E-09 1.1310E-10

[0189] Table 11

[0190] Table 12 below gives the optical length TTL (i.e., the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the imaging surface IMA) of the optical lens in Embodiment 4, the total focal length F of the optical lens, the maximum aperture D of the object side surface S1 of the first lens L1 corresponding to the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view FOV of the optical lens, the maximum field of view FOV of the optical lens, the optical back focal length BFL (the distance on the optical axis from the center of the image side surface S14 of the seventh lens L7 to the imaging surface IMA of the optical lens), the lens group length TL (the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the center of the image side surface S14 of the seventh lens L7), the focal length F3 of the third lens L3, the focal length F4 of the fourth lens L4, the focal length F5 of the fifth lens L5, and the focal length F6 of the sixth lens L6.

[0191] TTL(mm) 33.0857 TL(mm) 27.4045 F(mm) 3.9891 F3 (mm) 22.7504 D(mm) 12.5597 F4 (mm) 12.1312 H(mm) 9.5599 F5 (mm) 10.1036 FOV (°) 140 F6 (mm) -4.4905 BFL (mm) 5.6812

[0192] Table 12

[0193] Example 5

[0194] The following is for reference Figure 5 The optical lens according to Embodiment 5 of this application is described. Figure 5 This is a schematic diagram showing the structure of an optical lens according to Embodiment 5 of this application.

[0195] like Figure 5 As shown, the optical lens includes, in sequence from the object side to the image side along the optical axis: first lens L1, second lens L2, third lens L3, aperture stop STO, fourth lens L4, fifth lens L5, sixth lens L6, and seventh lens L7.

[0196] The first lens L1 is a meniscus lens with negative optical power. Its object-side surface S1 is convex, and its image-side surface S2 is concave. Both the object-side surface S1 and the image-side surface S2 of the first lens L1 are spherical.

[0197] The second lens L2 is a meniscus lens with negative optical power. Its object-side surface S3 is concave, and its image-side surface S4 is convex. Both the object-side surface S3 and the image-side surface S4 of the second lens L2 are aspherical.

[0198] The third lens L3 is a meniscus lens with positive optical power. Its object-side surface S5 is convex, and its image-side surface S6 is concave. Both the object-side surface S5 and the image-side surface S6 of the third lens L3 are spherical.

[0199] The fourth lens L4 is a biconvex lens with positive optical power. Its object-side surface S8 is convex, and its image-side surface S9 is convex. Both the object-side surface S8 and the image-side surface S9 of the fourth lens L4 are aspherical.

[0200] The fifth lens L5 is a biconvex lens with positive optical power. Its object-side surface S10 is convex, and its image-side surface S11 is convex. Both the object-side surface S10 and the image-side surface S11 of the fifth lens L5 are spherical.

[0201] The sixth lens L6 is a meniscus lens with negative optical power. Its object-side surface S11 is concave and its image-side surface S12 is convex. Both the object-side surface S11 and the image-side surface S12 of the sixth lens L6 are spherical.

[0202] The seventh lens L7 is a meniscus lens with positive optical power. Its object-side surface S13 is convex, and its image-side surface S14 is concave. Both the object-side surface S13 and the image-side surface S14 of the seventh lens L7 are aspherical.

[0203] In this embodiment, the fifth lens L5 and the sixth lens L6 are combined to form a cemented lens.

[0204] Optionally, the optical lens may also include a filter L8 and / or a protective glass L8 having an object-side surface S15 and an image-side surface S16. The filter L8 can be used to correct color aberrations, and the protective glass L8 can be used to protect the image sensor chip located at the imaging surface IMA. Light from the object passes sequentially through each surface S1 to S16 and is finally imaged on the imaging surface IMA.

[0205] In the optical lens of this embodiment, the aperture stop STO can be set between the third lens L3 and the fourth lens L4 to further improve the imaging quality.

[0206] Table 13 shows the basic parameters of the optical lens of Example 5, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0207]

[0208] Table 13

[0209] Table 14 below shows the conic coefficient k and the coefficients A, B, C, D, E, F and G of each higher-order term that can be used for the aspherical lens surfaces S3, S4, S8, S9, S13 and S14 in Example 5.

[0210] Face number k A B C D E F G S3 -0.5957 4.0390E-04 -4.3642E-06 1.7874E-06 -2.0450E-07 1.2700E-08 -3.8529E-10 4.3195E-12 S4 -2.2779 2.4454E-04 3.3539E-07 2.9720E-07 -1.9963E-08 7.9086E-10 -1.2936E-11 7.3297E-15 S8 1.7704 -1.2450E-04 5.6747E-05 -1.7547E-05 2.1012E-06 -1.4564E-07 5.2612E-09 -8.1970E-11 S9 -59.1945 -7.9032E-04 1.1506E-04 -9.3715E-06 6.0082E-07 -1.8372E-08 -3.9824E-11 1.2062E-11 S13 -14.0684 2.0557E-04 -1.5254E-04 4.4282E-06 -2.6851E-07 1.2460E-10 7.2407E-10 -1.3247E-11 S14 -15.0970 -8.2608E-04 -8.4856E-05 3.6054E-06 -2.6968E-07 1.1097E-08 1.3088E-10 -8.7242E-12

[0211] Table 14

[0212] Table 15 below gives the optical length TTL (i.e., the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the imaging surface IMA) of the optical lens in Embodiment 5, the total focal length F of the optical lens, the maximum aperture D of the object side surface S1 of the first lens L1 corresponding to the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view FOV of the optical lens, the maximum field of view FOV of the optical lens, the optical back focal length BFL (the distance on the optical axis from the center of the image side surface S14 of the seventh lens L7 to the imaging surface IMA of the optical lens), the lens group length TL (the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the center of the image side surface S14 of the seventh lens L7), the focal length F3 of the third lens L3, the focal length F4 of the fourth lens L4, the focal length F5 of the fifth lens L5, and the focal length F6 of the sixth lens L6.

[0213] TTL(mm) 32.2187 TL(mm) 27.7649 F(mm) 4.0522 F3 (mm) 25.3956 D(mm) 12.8343 F4 (mm) 11.3608 H(mm) 9.8932 F5 (mm) 8.0009 FOV (°) 140 F6 (mm) -7.1157 BFL (mm) 4.4538

[0214] Table 15

[0215] Example 6

[0216] The following is for reference Figure 6 The optical lens according to Embodiment 6 of this application is described. Figure 6 This is a schematic diagram showing the structure of an optical lens according to Embodiment 6 of this application.

[0217] like Figure 6 As shown, the optical lens includes, in sequence from the object side to the image side along the optical axis: first lens L1, second lens L2, third lens L3, aperture stop STO, fourth lens L4, fifth lens L5, sixth lens L6, and seventh lens L7.

[0218] The first lens L1 is a meniscus lens with negative optical power. Its object-side surface S1 is convex, and its image-side surface S2 is concave. Both the object-side surface S1 and the image-side surface S2 of the first lens L1 are spherical.

[0219] The second lens L2 is a meniscus lens with negative optical power. Its object-side surface S3 is concave, and its image-side surface S4 is convex. Both the object-side surface S3 and the image-side surface S4 of the second lens L2 are aspherical.

[0220] The third lens L3 is a meniscus lens with positive optical power. Its object-side surface S5 is convex, and its image-side surface S6 is concave. Both the object-side surface S5 and the image-side surface S6 of the third lens L3 are spherical.

[0221] The fourth lens L4 is a biconvex lens with positive optical power. Its object-side surface S8 is convex, and its image-side surface S9 is convex. Both the object-side surface S8 and the image-side surface S9 of the fourth lens L4 are aspherical.

[0222] The fifth lens L5 is a biconvex lens with positive optical power. Its object-side surface S10 is convex, and its image-side surface S11 is convex. Both the object-side surface S10 and the image-side surface S11 of the fifth lens L5 are spherical.

[0223] The sixth lens L6 is a concave-convex lens with negative optical power. Its object-side surface S11 is concave and its image-side surface S12 is convex. Both the object-side surface S11 and the image-side surface S12 of the sixth lens L6 are spherical.

[0224] The seventh lens L7 is a meniscus lens with positive optical power. Its object-side surface S13 is convex, and its image-side surface S14 is concave. Both the object-side surface S13 and the image-side surface S14 of the seventh lens L7 are aspherical.

[0225] In this embodiment, the fifth lens L5 and the sixth lens L6 are combined to form a cemented lens.

[0226] Optionally, the optical lens may also include a filter L8 and / or a protective glass L8 having an object-side surface S15 and an image-side surface S16. The filter L8 can be used to correct color aberrations, and the protective glass L8 can be used to protect the image sensor chip located at the imaging surface IMA. Light from the object passes sequentially through each surface S1 to S16 and is finally imaged on the imaging surface IMA.

[0227] In the optical lens of this embodiment, the aperture stop STO can be set between the third lens L3 and the fourth lens L4 to further improve the imaging quality.

[0228] Table 16 shows the basic parameters of the optical lens of Example 6, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0229]

[0230] Table 16

[0231] Table 17 below shows the conic coefficient k and the coefficients A, B, C, D, E, F and G of each higher-order term that can be used for the aspherical lens surfaces S3, S4, S8, S9, S13 and S14 in Example 6.

[0232] Face number k A B C D E F G S3 -0.6091 4.5150E-04 -8.1755E-07 1.7065E-06 -2.0567E-07 1.2565E-08 -3.9046E-10 4.6938E-12 S4 -1.8263 6.9928E-05 6.8789E-07 2.4503E-07 -2.0932E-08 8.9349E-10 -1.8972E-11 1.3604E-13 S8 1.6400 -1.8955E-04 6.7087E-05 -1.7272E-05 2.0820E-06 -1.4521E-07 5.3397E-09 -8.3086E-11 S9 -96.3605 -4.0411E-04 1.1263E-04 -1.0369E-05 6.8871E-07 -1.4033E-08 -5.3734E-10 2.5610E-11 S13 -8.9239 2.1871E-03 -1.0165E-04 5.3766E-06 -2.2452E-07 1.8766E-09 2.6737E-10 -7.1689E-12 S14 -34.9739 4.0942E-04 -4.1072E-05 3.9322E-06 -2.6377E-07 8.3391E-09 4.0165E-11 -4.0334E-12

[0233] Table 17

[0234] Table 18 below shows the optical length TTL (i.e., the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the imaging surface IMA) of the optical lens in Embodiment 6, the total focal length F of the optical lens, the maximum aperture D of the object side surface S1 of the first lens L1 corresponding to the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view FOV of the optical lens, the maximum field of view FOV of the optical lens, the optical back focal length BFL (the distance on the optical axis from the center of the image side surface S14 of the seventh lens L7 to the imaging surface IMA of the optical lens), the lens group length TL (the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the center of the image side surface S14 of the seventh lens L7), the focal length F3 of the third lens L3, the focal length F4 of the fourth lens L4, the focal length F5 of the fifth lens L5, and the focal length F6 of the sixth lens L6.

[0235]

[0236]

[0237] Table 18

[0238] Example 7

[0239] The following is for reference Figure 7 The optical lens according to Embodiment 7 of this application is described. Figure 7 This is a schematic diagram showing the structure of an optical lens according to Embodiment 7 of this application.

[0240] like Figure 7 As shown, the optical lens includes, in sequence from the object side to the image side along the optical axis: first lens L1, second lens L2, third lens L3, aperture stop STO, fourth lens L4, fifth lens L5, sixth lens L6, and seventh lens L7.

[0241] The first lens L1 is a meniscus lens with negative optical power. Its object-side surface S1 is convex, and its image-side surface S2 is concave. Both the object-side surface S1 and the image-side surface S2 of the first lens L1 are spherical.

[0242] The second lens L2 is a meniscus lens with negative optical power. Its object-side surface S3 is concave, and its image-side surface S4 is convex. Both the object-side surface S3 and the image-side surface S4 of the second lens L2 are aspherical.

[0243] The third lens L3 is a meniscus lens with positive optical power. Its object-side surface S5 is convex, and its image-side surface S6 is concave. Both the object-side surface S5 and the image-side surface S6 of the third lens L3 are spherical.

[0244] The fourth lens L4 is a biconvex lens with positive optical power. Its object-side surface S8 is convex, and its image-side surface S9 is convex. Both the object-side surface S8 and the image-side surface S9 of the fourth lens L4 are spherical.

[0245] The fifth lens L5 is a biconvex lens with positive optical power. Its object-side surface S10 is convex, and its image-side surface S11 is convex. Both the object-side surface S10 and the image-side surface S11 of the fifth lens L5 are spherical.

[0246] The sixth lens L6 is a concave-convex lens with negative optical power. Its object-side surface S11 is concave and its image-side surface S12 is convex. Both the object-side surface S11 and the image-side surface S12 of the sixth lens L6 are spherical.

[0247] The seventh lens L7 is a meniscus lens with positive optical power. Its object-side surface S13 is concave and its image-side surface S14 is convex. Both the object-side surface S13 and the image-side surface S14 of the seventh lens L7 are aspherical.

[0248] In this embodiment, the fifth lens L5 and the sixth lens L6 are combined to form a cemented lens.

[0249] Optionally, the optical lens may also include a filter L8 and / or a protective glass L8 having an object-side surface S15 and an image-side surface S16. The filter L8 can be used to correct color aberrations, and the protective glass L8 can be used to protect the image sensor chip located at the imaging surface IMA. Light from the object passes sequentially through each surface S1 to S16 and is finally imaged on the imaging surface IMA.

[0250] In the optical lens of this embodiment, the aperture stop STO can be set between the third lens L3 and the fourth lens L4 to further improve the imaging quality.

[0251] Table 19 shows the basic parameters of the optical lens of Example 7, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0252]

[0253]

[0254] Table 19

[0255] Table 20 below shows the conic coefficient k and the coefficients A, B, C, D, E, F and G of each higher-order term that can be used for the aspherical lens surfaces S3, S4, S13 and S14 in Example 7.

[0256]

[0257] Table 20

[0258] Table 21 below gives the optical length TTL (i.e., the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the imaging surface IMA) of the optical lens in Embodiment 7, the total focal length F of the optical lens, the maximum aperture D of the object side surface S1 of the first lens L1 corresponding to the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view FOV of the optical lens, the maximum field of view FOV of the optical lens, the optical back focal length BFL (the distance on the optical axis from the center of the image side surface S14 of the seventh lens L7 to the imaging surface IMA of the optical lens), the lens group length TL (the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the center of the image side surface S14 of the seventh lens L7), the focal length F3 of the third lens L3, the focal length F4 of the fourth lens L4, the focal length F5 of the fifth lens L5, and the focal length F6 of the sixth lens L6.

[0259] TTL(mm) 31.0029 TL(mm) 25.8926 F(mm) 4.0704 F3 (mm) 28.0012 D(mm) 11.7993 F4 (mm) 10.8825 H(mm) 9.2709 F5 (mm) 8.0025 FOV (°) 140 F6 (mm) -6.7304 BFL (mm) 5.1103

[0260] Table 21

[0261] Example 8

[0262] The following is for reference Figure 8 The optical lens according to Embodiment 8 of this application is described. Figure 8 This is a schematic diagram showing the structure of an optical lens according to Embodiment 8 of this application.

[0263] like Figure 8 As shown, the optical lens includes, in sequence from the object side to the image side along the optical axis: first lens L1, second lens L2, third lens L3, aperture stop STO, fourth lens L4, fifth lens L5, sixth lens L6, and seventh lens L7.

[0264] The first lens L1 is a meniscus lens with negative optical power. Its object-side surface S1 is convex, and its image-side surface S2 is concave. Both the object-side surface S1 and the image-side surface S2 of the first lens L1 are spherical.

[0265] The second lens L2 is a meniscus lens with negative optical power. Its object-side surface S3 is concave, and its image-side surface S4 is convex. Both the object-side surface S3 and the image-side surface S4 of the second lens L2 are aspherical.

[0266] The third lens L3 is a meniscus lens with positive optical power. Its object-side surface S5 is convex, and its image-side surface S6 is concave. Both the object-side surface S5 and the image-side surface S6 of the third lens L3 are spherical.

[0267] The fourth lens L4 is a biconvex lens with positive optical power. Its object-side surface S8 is convex, and its image-side surface S9 is convex. Both the object-side surface S8 and the image-side surface S9 of the fourth lens L4 are spherical.

[0268] The fifth lens L5 is a biconvex lens with positive optical power. Its object-side surface S10 is convex, and its image-side surface S11 is convex. Both the object-side surface S10 and the image-side surface S11 of the fifth lens L5 are spherical.

[0269] The sixth lens L6 is a concave-convex lens with negative optical power. Its object-side surface S11 is concave and its image-side surface S12 is convex. Both the object-side surface S11 and the image-side surface S12 of the sixth lens L6 are spherical.

[0270] The seventh lens L7 is a meniscus lens with positive optical power. Its object-side surface S13 is concave and its image-side surface S14 is convex. Both the object-side surface S13 and the image-side surface S14 of the seventh lens L7 are aspherical.

[0271] In this embodiment, the fifth lens L5 and the sixth lens L6 are combined to form a cemented lens.

[0272] Optionally, the optical lens may also include a filter L8 and / or a protective glass L8 having an object-side surface S15 and an image-side surface S16. The filter L8 can be used to correct color aberrations, and the protective glass L8 can be used to protect the image sensor chip located at the imaging surface IMA. Light from the object passes sequentially through each surface S1 to S16 and is finally imaged on the imaging surface IMA.

[0273] In the optical lens of this embodiment, the aperture stop STO can be set between the third lens L3 and the fourth lens L4 to further improve the imaging quality.

[0274] Table 22 shows the basic parameters of the optical lens of Example 8, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0275]

[0276]

[0277] Table 22

[0278] Table 23 below shows the conic coefficient k and the coefficients A, B, C, D, E, F and G of each higher-order term that can be used for the aspherical lens surfaces S3, S4, S13 and S14 in Example 8.

[0279]

[0280] Table 23

[0281] Table 24 below gives the optical length TTL (i.e., the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the imaging surface IMA) of the optical lens in Embodiment 8, the total focal length F of the optical lens, the maximum aperture D of the object side surface S1 of the first lens L1 corresponding to the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view FOV of the optical lens, the maximum field of view FOV of the optical lens, the optical back focal length BFL (the distance on the optical axis from the center of the image side surface S14 of the seventh lens L7 to the imaging surface IMA of the optical lens), the lens group length TL (the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the center of the image side surface S14 of the seventh lens L7), the focal length F3 of the third lens L3, the focal length F4 of the fourth lens L4, the focal length F5 of the fifth lens L5, and the focal length F6 of the sixth lens L6.

[0282] TTL(mm) 31.0016 TL(mm) 25.8675 F(mm) 4.0784 F3 (mm) 28.1821 D(mm) 12.1551 F4 (mm) 10.9355 H(mm) 9.2036 F5 (mm) 7.9907 FOV (°) 140 F6 (mm) -6.8386 BFL (mm) 5.1341

[0283] Table 24

[0284] Example 9

[0285] The following is for reference Figure 9 The optical lens according to Embodiment 9 of this application is described. Figure 9 This is a schematic diagram showing the structure of an optical lens according to Embodiment 9 of this application.

[0286] like Figure 9 As shown, the optical lens includes, in sequence from the object side to the image side along the optical axis: first lens L1, second lens L2, third lens L3, aperture stop STO, fourth lens L4, fifth lens L5, sixth lens L6, and seventh lens L7.

[0287] The first lens L1 is a meniscus lens with negative optical power. Its object-side surface S1 is convex, and its image-side surface S2 is concave. Both the object-side surface S1 and the image-side surface S2 of the first lens L1 are spherical.

[0288] The second lens L2 is a meniscus lens with negative optical power. Its object-side surface S3 is concave, and its image-side surface S4 is convex. Both the object-side surface S3 and the image-side surface S4 of the second lens L2 are aspherical.

[0289] The third lens L3 is a meniscus lens with positive optical power. Its object-side surface S5 is convex, and its image-side surface S6 is concave. Both the object-side surface S5 and the image-side surface S6 of the third lens L3 are spherical.

[0290] The fourth lens L4 is a biconvex lens with positive optical power. Its object-side surface S8 is convex, and its image-side surface S9 is convex. Both the object-side surface S8 and the image-side surface S9 of the fourth lens L4 are spherical.

[0291] The fifth lens L5 is a biconvex lens with positive optical power. Its object-side surface S10 is convex, and its image-side surface S11 is convex. Both the object-side surface S10 and the image-side surface S11 of the fifth lens L5 are spherical.

[0292] The sixth lens L6 is a concave-convex lens with negative optical power. Its object-side surface S11 is concave and its image-side surface S12 is convex. Both the object-side surface S11 and the image-side surface S12 of the sixth lens L6 are spherical.

[0293] The seventh lens L7 is a meniscus lens with negative optical power. Its object-side surface S13 is convex and its image-side surface S14 is concave. Both the object-side surface S13 and the image-side surface S14 of the seventh lens L7 are aspherical.

[0294] In this embodiment, the fifth lens L5 and the sixth lens L6 are combined to form a cemented lens.

[0295] Optionally, the optical lens may also include a filter L8 and / or a protective glass L8 having an object-side surface S15 and an image-side surface S16. The filter L8 can be used to correct color aberrations, and the protective glass L8 can be used to protect the image sensor chip located at the imaging surface IMA. Light from the object passes sequentially through each surface S1 to S16 and is finally imaged on the imaging surface IMA.

[0296] In the optical lens of this embodiment, the aperture stop STO can be set between the third lens L3 and the fourth lens L4 to further improve the imaging quality.

[0297] Table 25 shows the basic parameters of the optical lens of Example 9, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0298]

[0299] Table 25

[0300] Table 26 below shows the conic coefficient k and the coefficients A, B, C, D, E, F and G of each higher-order term that can be used for the aspherical lens surfaces S3, S4, S13 and S14 in Example 9.

[0301] Face number k A B C D E F G S3 -0.5577 -0.00018714 0.000100445 -2.18361E-05 3.43419E-06 -2.98238E-07 1.35969E-08 -2.53372E-10 S4 -0.8699 0.000310007 -3.84481E-05 1.07807E-05 -1.25727E-06 8.41332E-08 -2.97016E-09 4.33315E-11 S13 108.426 -0.0064430 0.000494761 -0.000114816 2.14609E-05 -2.00278E-06 1.00904E-07 -2.18071E-09 S14 200.0 -0.003598 0.000187167 -9.13174E-06 2.68951E-06 -2.79732E-07 1.59899E-08 -4.15607E-10

[0302] Table 26

[0303] Table 27 below gives the optical length TTL (i.e., the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the imaging surface IMA) of the optical lens in Embodiment 9, the total focal length F of the optical lens, the maximum aperture D of the object side surface S1 of the first lens L1 corresponding to the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view FOV of the optical lens, the maximum field of view FOV of the optical lens, the optical back focal length BFL (the distance on the optical axis from the center of the image side surface S14 of the seventh lens L7 to the imaging surface IMA of the optical lens), the lens group length TL (the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the center of the image side surface S14 of the seventh lens L7), the focal length F3 of the third lens L3, the focal length F4 of the fourth lens L4, the focal length F5 of the fifth lens L5, and the focal length F6 of the sixth lens L6.

[0304] TTL(mm) 31.0001 TL(mm) 26.092 F(mm) 4.1007 F3 (mm) 24.9029 D(mm) 13.427 F4 (mm) 10.229 H(mm) 8.6916 F5 (mm) 9.6869 FOV (°) 140 F6 (mm) -12.9412 BFL (mm) 4.9081

[0305] Table 27

[0306] Example 10

[0307] The following is for reference Figure 10 The optical lens according to Embodiment 10 of this application is described. Figure 10 This is a schematic diagram showing the structure of an optical lens according to Embodiment 10 of this application.

[0308] like Figure 10 As shown, the optical lens includes, in sequence from the object side to the image side along the optical axis: first lens L1, second lens L2, third lens L3, aperture stop STO, fourth lens L4, fifth lens L5, sixth lens L6, and seventh lens L7.

[0309] The first lens L1 is a meniscus lens with negative optical power. Its object-side surface S1 is convex, and its image-side surface S2 is concave. Both the object-side surface S1 and the image-side surface S2 of the first lens L1 are spherical.

[0310] The second lens L2 is a meniscus lens with negative optical power. Its object-side surface S3 is concave, and its image-side surface S4 is convex. Both the object-side surface S3 and the image-side surface S4 of the second lens L2 are aspherical.

[0311] The third lens L3 is a meniscus lens with positive optical power. Its object-side surface S5 is convex, and its image-side surface S6 is concave. Both the object-side surface S5 and the image-side surface S6 of the third lens L3 are spherical.

[0312] The fourth lens L4 is a biconvex lens with positive optical power. Its object-side surface S8 is convex, and its image-side surface S9 is convex. Both the object-side surface S8 and the image-side surface S9 of the fourth lens L4 are aspherical.

[0313] The fifth lens L5 is a biconvex lens with positive optical power. Its object-side surface S10 is convex, and its image-side surface S11 is convex. Both the object-side surface S10 and the image-side surface S11 of the fifth lens L5 are spherical.

[0314] The sixth lens L6 is a concave-convex lens with negative optical power. Its object-side surface S11 is concave and its image-side surface S12 is convex. Both the object-side surface S11 and the image-side surface S12 of the sixth lens L6 are spherical.

[0315] The seventh lens L7 is a meniscus lens with negative optical power. Its object-side surface S13 is concave and its image-side surface S14 is convex. Both the object-side surface S13 and the image-side surface S14 of the seventh lens L7 are aspherical.

[0316] In this embodiment, the fifth lens L5 and the sixth lens L6 are combined to form a cemented lens.

[0317] Optionally, the optical lens may also include a filter L8 and / or a protective glass L8 having an object-side surface S15 and an image-side surface S16. The filter L8 can be used to correct color aberrations, and the protective glass L8 can be used to protect the image sensor chip located at the imaging surface IMA. Light from the object passes sequentially through each surface S1 to S16 and is finally imaged on the imaging surface IMA.

[0318] In the optical lens of this embodiment, the aperture stop STO can be set between the third lens L3 and the fourth lens L4 to further improve the imaging quality.

[0319] Table 28 shows the basic parameters of the optical lens of Example 10, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0320]

[0321] Table 28

[0322] Table 29 below shows the conic coefficient k and the coefficients A, B, C, D, E, F and G of each higher-order term that can be used for the aspherical lens surfaces S3, S4, S8, S9, S13 and S14 in Example 10.

[0323]

[0324] Table 29

[0325] Table 30 below gives the optical length TTL (i.e., the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the imaging surface IMA) of the optical lens in Embodiment 10, the total focal length F of the optical lens, the maximum aperture D of the object side surface S1 of the first lens L1 corresponding to the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view FOV of the optical lens, the maximum field of view FOV of the optical lens, the optical back focal length BFL (the distance on the optical axis from the center of the image side surface S14 of the seventh lens L7 to the imaging surface IMA of the optical lens), the lens group length TL (the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the center of the image side surface S14 of the seventh lens L7), the focal length F3 of the third lens L3, the focal length F4 of the fourth lens L4, the focal length F5 of the fifth lens L5, and the focal length F6 of the sixth lens L6.

[0326]

[0327]

[0328] Table 30

[0329] In summary, Examples 1 to 10 satisfy the relationships shown in Table 31.

[0330]

[0331] Table 31

[0332] This application also provides an electronic device that may include an optical lens according to the above embodiments of this application and an imaging element for converting an optical image formed by the optical lens into an electrical signal. The electronic device may be a stand-alone electronic device, such as a rangefinder camera, or an imaging module integrated into a rangefinder device. Furthermore, the electronic device may also be a stand-alone imaging device, such as an in-vehicle camera, or an imaging module integrated into a driver assistance system, such as a vehicle-mounted camera.

[0333] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An optical lens, characterized in that, Along the optical axis from the object side to the image side, the following are included in sequence: The first lens with negative optical power has a convex object side and a concave image side. The second lens with optical power has a concave object side and a convex image side; A third lens with positive optical power has a convex object side and a convex or concave image side. The fourth lens with positive optical power has a convex object-side surface and a convex image-side surface; The fifth lens with positive optical power has a convex object-side surface and a convex image-side surface; A sixth lens with negative optical power, its object-side surface is concave, and its image-side surface is either convex or concave; and A seventh lens with optical power, wherein the number of lenses with optical power in the optical lens is seven; The optical power arrangement of the second lens and the seventh lens is negative-positive, positive-positive, or negative-negative; The object-side surface of the seventh lens is convex, and the image-side surface is convex; or, the object-side surface of the seventh lens is convex, and the image-side surface is concave; or, the object-side surface of the seventh lens is concave, and the image-side surface is convex. The total focal length F of the optical lens, the maximum field of view (FOV) of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens satisfy: 55°≤(FOV×F) / H≤70°; The total focal length F of the optical lens and the radius of curvature R11 of the object side surface of the first lens satisfy the following: 0.1517≤|F / R11|≤0.271; The distance d4 between the second lens and the third lens on the optical axis and the total optical length TTL of the optical lens satisfy the following condition: 0.00266≤d4 / TTL≤0.004; The total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.4096≤F / H≤0.

55.

2. The optical lens according to claim 1, characterized in that, It satisfies: 57.3436°≤(FOV×F) / H≤70°.

3. The optical lens according to claim 1, characterized in that, It satisfies: 0.00266≤d4 / TTL≤0.0035.

4. The optical lens according to claim 1, characterized in that, It satisfies: 7.5597≤TTL / F≤9.

5. The optical lens according to claim 1, characterized in that, The optical back focal length BFL of the optical lens and the lens group length TL of the optical lens satisfy the following condition: 0.11≤BFL / TL≤0.2073.

6. The optical lens according to claim 1, characterized in that, The maximum aperture D of the object side of the first lens corresponding to the maximum field of view of the optical lens satisfies: D / H / FOV×180°≤2.

7.

7. The optical lens according to claim 1, characterized in that, The radius of curvature R12 of the image side of the first lens satisfies: 2.0≤R11 / R12≤5.3025.

8. The optical lens according to claim 1, characterized in that, The radius of curvature R12 of the image side of the first lens and the radius of curvature R21 of the object side of the second lens satisfy: -1.0≤R12 / R21≤-0.

652.

9. The optical lens according to claim 1, characterized in that, The focal length F4 of the fourth lens and the focal length F5 of the fifth lens satisfy the following condition: 1.0 ≤ |F4 / F5| ≤ 1.4334.

10. The optical lens according to claim 1, characterized in that, The focal length F5 of the fifth lens and the focal length F6 of the sixth lens satisfy the following condition: 0.5 ≤ |F5 / F6| ≤ 3.

0.

11. The optical lens according to claim 1, characterized in that, The focal length F3 of the third lens and the focal length F4 of the fourth lens satisfy the following condition: 0.6 ≤ |F3 / F4| ≤ 2.

888.

12. The optical lens according to claim 1, characterized in that, At least one of the following conditions must be met: 7.5597≤TTL / F≤8.7881; 0.1226≤BFL / TL≤0.2073; 0.4096≤F / H≤0.4718; 1.638≤D / H / FOV×1 80°≤2.016; 3.13≤R11 / R12≤5.3025; -0.614≤R41 / R42≤-0.25; -0.9352≤R12 / R21≤-0.652; 1.056≤|F4 / F5|≤1.4334; 0.7464≤|F5 / F6|≤2.2691; 1.4337≤|F3 / F4|≤2.888; 57.3436°≤(FO V×F) / H≤66.052°; 1.638≤D / H / FOV×180°≤2.7; 0.00266≤d4 / TTL≤0.0032; 7.5597≤TTL / F≤10; Wherein, BFL is the optical back focal length of the optical lens, TL is the lens group length of the optical lens, D is the maximum aperture of the object side of the first lens corresponding to the maximum field of view of the optical lens, R12 is the radius of curvature of the image side of the first lens, R41 is the radius of curvature of the object side of the fourth lens, R42 is the radius of curvature of the image side of the fourth lens, R21 is the radius of curvature of the object side of the second lens, F4 is the focal length of the fourth lens, F5 is the focal length of the fifth lens, F6 is the focal length of the sixth lens, and F3 is the focal length of the third lens.

13. An optical lens, characterized in that, Along the optical axis from the object side to the image side, the following are included in sequence: The first lens with negative optical power has a convex object side and a concave image side. The second lens with optical power has a concave object side and a convex image side; A third lens with positive optical power has a convex object side and a convex or concave image side. The fourth lens with positive optical power has a convex object-side surface and a convex image-side surface; The fifth lens with positive optical power has a convex object-side surface and a convex image-side surface; A sixth lens with negative optical power, its object-side surface is concave, and its image-side surface is either convex or concave; and A seventh lens with optical power. The optical lens has seven lenses with optical power. The optical power arrangement of the second lens and the seventh lens is negative-positive, positive-positive, or negative-negative; The object-side surface of the seventh lens is convex, and the image-side surface is convex; or, the object-side surface of the seventh lens is convex, and the image-side surface is concave; or, the object-side surface of the seventh lens is concave, and the image-side surface is convex. The total optical length TTL of the optical lens and the total focal length F of the optical lens satisfy: 7.5597≤TTL / F≤10; The total focal length F of the optical lens and the radius of curvature R11 of the object side surface of the first lens satisfy the following: 0.1517≤|F / R11|≤0.271; The distance d4 between the second lens and the third lens on the optical axis satisfies the following condition with respect to the total optical length TTL of the optical lens: 0.00266 ≤ d4 / TTL ≤ 0.004 The total focal length F of the optical lens and the image height H corresponding to the maximum field of view of the optical lens satisfy the following condition: 0.4096≤F / H≤0.

55.

14. The optical lens according to claim 13, characterized in that, It satisfies: 7.5597≤TTL / F≤9.

15. The optical lens according to claim 13, characterized in that, The maximum field of view (FOV) of the optical lens and the image height (H) corresponding to the maximum field of view of the optical lens satisfy the following condition: 55°≤(FOV×F) / H≤70°.

16. The optical lens according to claim 13, characterized in that, The maximum field of view (FOV) of the optical lens and the image height (H) corresponding to the maximum field of view of the optical lens satisfy the following condition: 57.3436°≤(FOV×F) / H≤70°.

17. The optical lens according to claim 13, characterized in that, It satisfies: 0.00266≤d4 / TTL≤0.0035.

18. The optical lens according to claim 13, characterized in that, The optical back focal length (BFL) of the optical lens and the lens group length (TL) of the optical lens satisfy the following: 0.11≤BFL / TL≤0.2073.

19. The optical lens according to claim 13, characterized in that, The maximum field of view (FOV) of the optical lens, the maximum aperture D of the object side of the first lens corresponding to the maximum field of view of the optical lens, and the image height H corresponding to the maximum field of view of the optical lens satisfy the following: D / H / FOV×180°≤2.

7.

20. The optical lens according to claim 13, characterized in that, The radius of curvature R12 of the image side of the first lens satisfies: 2.0≤R11 / R12≤5.3025.

21. The optical lens according to claim 13, characterized in that, The radius of curvature R12 of the image side of the first lens and the radius of curvature R21 of the object side of the second lens satisfy: -1.0≤R12 / R21≤-0.

652.

22. The optical lens according to claim 13, characterized in that, The focal length F4 of the fourth lens and the focal length F5 of the fifth lens satisfy the following condition: 1.0 ≤ |F4 / F5| ≤ 1.4334.

23. The optical lens according to claim 13, characterized in that, The focal length F5 of the fifth lens and the focal length F6 of the sixth lens satisfy the following condition: 0.5 ≤ |F5 / F6| ≤ 3.

0.

24. The optical lens according to claim 13, characterized in that, The focal length F3 of the third lens and the focal length F4 of the fourth lens satisfy the following condition: 0.6 ≤ |F3 / F4| ≤ 2.

888.

25. The optical lens according to claim 13, characterized in that, At least one of the following conditions must be met: 7.5597≤TTL / F≤8.7881; 57.3436°≤(FOV×F) / H≤66.052°; 0.00266≤d4 / TTL≤0.0032; 0.1226≤BFL / TL≤0.2073; 0.4096≤F / H≤0.4718; 1.638≤D / H / FOV×180°≤2.7; 1.638≤D / H / FOV×180°≤2.016 ;3.13≤R11 / R12≤5.3025; -0.614≤R41 / R42≤-0.25; -0.9352≤R12 / R21≤-0.652; 1.056≤|F4 / F5|≤1.4334; 0.7464≤|F5 / F6|≤2.2691; 1.4337≤|F3 / F4|≤2.888; Wherein, FOV is the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, BFL is the optical back focal length of the optical lens, TL is the lens group length of the optical lens, D is the maximum aperture of the object side of the first lens corresponding to the maximum field of view of the optical lens, R12 is the radius of curvature of the image side of the first lens, R41 is the radius of curvature of the object side of the fourth lens, R42 is the radius of curvature of the image side of the fourth lens, R21 is the radius of curvature of the object side of the second lens, F4 is the focal length of the fourth lens, F5 is the focal length of the fifth lens, F6 is the focal length of the sixth lens, and F3 is the focal length of the third lens.

26. An electronic device, characterized in that, It includes an optical lens according to any one of claims 1-25 and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

Images