Optical lens and electronic equipment

Abstract

The invention discloses an optical lens and electronic equipment comprising the same. The optical lens sequentially comprises a first lens with negative focal power, a second lens with focal power, a third lens with negative focal power, a fourth lens with positive focal power, a fifth lens with positive focal power and a sixth lens with focal power from a first side to a second side along an optical axis, a seventh lens with focal power and an eighth lens with focal power; wherein the number of lenses with focal power in the optical lens is eight; the positive and negative attributes of the focal power of the sixth lens and the seventh lens are opposite; the distance TTL from the center of the first side face of the first lens to the imaging face of the optical lens on the optical axis, the whole set focal length F of the optical lens, the air interval d56 between the fifth lens and the sixth lens on the optical axis, the focal length F2 of the second lens and the focal length F8 of the eighth lens meet the requirements that d56 / TTL is larger than or equal to 0.06 and smaller than or equal to 0.5, F2 / F is larger than or equal to 4.5 and smaller than or equal to F8 / F, and F8 / F is larger than or equal to 3.

Description

[0001] Divisional application

[0002] This application is a divisional application of Chinese invention patent application filed on June 24, 2024, entitled "Optical Lens and Electronic Device" with application number 202410823045.2. Technical Field

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

[0004] With the rapid development of autonomous driving technology, automotive cameras, as a core component of autonomous driving assistance systems, have seen high resolution and miniaturization requirements gradually become a hot topic in current technology development. Among them, forward-looking automotive cameras, due to their installation location, functional implementation, and cost considerations, need to meet requirements such as high resolution, miniaturization, and high cost-effectiveness.

[0005] However, existing automotive lenses typically cannot simultaneously meet the requirements of high resolution and miniaturization. Achieving a small chief ray angle (CRA), low sensitivity, and minimal ghosting while satisfying both high resolution and miniaturization remains a constant goal in the field of optical lenses.

[0006] In addition, in order to reduce costs and make the lenses lighter, existing automotive lenses usually use plastic lenses. Plastic lenses have obvious thermal expansion and contraction characteristics, which causes the optimal image plane to deviate from the chip at high and low temperatures of -40℃ to 120℃, resulting in unsightly images and other adverse effects. Furthermore, the high plasticity system has poor thermal stability, and the resolution cannot meet the requirements after returning to room temperature from high temperature. Summary of the Invention

[0007] This application provides an optical lens comprising, from a first side to a second side along the optical axis, a first lens with negative optical power, a second lens with optical power, a third lens with negative optical power, a fourth lens with positive optical power, a fifth lens with positive optical power, a sixth lens with optical power, a seventh lens with optical power, and an eighth lens with optical power. The first lens has a convex first side and a concave second side. The second lens has a concave first side and a convex second side. The third lens has a concave first side and a convex second side. The fourth lens has a convex second side. The fifth lens has a convex first side. The sixth lens has a convex first side. The optical lens contains eight lenses with optical power. The sixth and seventh lenses have opposite positive and negative optical power properties. Among them, the air gap d56 between the fifth and sixth lenses on the optical axis and the distance TTL from the center of the first side of the first lens to the imaging plane of the optical lens on the optical axis satisfy: 0.06≤d56 / TTL≤0.5; the focal length F2 of the second lens and the total focal length F of the optical lens satisfy: 4.5≤|F2 / F|; the focal length F8 of the eighth lens and the total focal length F of the optical lens satisfy: 3≤|F8 / F|.

[0008] In one embodiment, the second lens has positive or negative optical power.

[0009] In one embodiment, the first side surface of the fourth lens is a plane, a convex surface, or a concave surface.

[0010] In one embodiment, the second side surface of the fifth lens is either convex or concave.

[0011] In one embodiment, the sixth lens has positive optical power and its second side surface is convex; or, the sixth lens has negative optical power and its second side surface is concave.

[0012] In one embodiment, the seventh lens has negative optical power, with its first side being concave and its second side being either convex or concave; or, the seventh lens has positive optical power, with its first side being convex and its second side being convex.

[0013] In one embodiment, the eighth lens has negative optical power, with its first side being convex or concave and its second side being concave; or, the eighth lens has positive optical power, with its first side being convex and its second side being concave.

[0014] In one embodiment, the distance TTL from the center of the first side of the first lens to the imaging plane of the optical lens on the optical axis satisfies the following condition: TTL / F≤6.

[0015] In one embodiment, the air gap d45 between the fourth and fifth lenses on the optical axis and the distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis satisfy: d45 / TTL≤0.1.

[0016] In one embodiment, the focal length F3 of the third lens satisfies the following condition with respect to the total focal length F of the optical lens: -20≤F3 / F.

[0017] In one embodiment, the focal length F3 of the third lens satisfies the following condition with respect to the total focal length F of the optical lens: -12≤F3 / F≤-1.2.

[0018] In one embodiment, the distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy: TTL / H / FOV×1°≤0.06.

[0019] In one embodiment, the distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy: TTL / H / FOV×1°≤0.035.

[0020] In one embodiment, the focal length F4 of the fourth lens satisfies the condition that F4 / F ≤ 3.6 with respect to the total focal length F of the optical lens.

[0021] In one embodiment, the focal length F5 of the fifth lens satisfies the following condition with respect to the total focal length F of the optical lens: F5 / F≤5.

[0022] In one embodiment, the combined focal length F67 of the sixth and seventh lenses satisfies the same condition as the overall focal length F of the optical lens: 0 <F67 / F≤10。

[0023] In one embodiment, the combined focal length F67 of the sixth and seventh lenses satisfies the following condition with respect to the overall focal length F of the optical lens: 2.5 ≤ F67 / F ≤ 8.5.

[0024] In one embodiment, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy: 0.35≤(H / 2) / (F*tan(θ / 2))≤0.95.

[0025] In one embodiment, the radius of curvature R11 of the first side surface of the first lens and the radius of curvature R12 of the second side surface of the first lens satisfy: 3.3 ≤ R11 / R12.

[0026] In one embodiment, the maximum field of view (FOV) of the optical lens, the image height (H) corresponding to the maximum field of view of the optical lens, and the total focal length (F) of the optical lens satisfy: 45° ≤ (FOV × F) / H.

[0027] In one embodiment, the maximum field of view (FOV) of the optical lens, the image height (H) corresponding to the maximum field of view of the optical lens, and the total focal length (F) of the optical lens satisfy the following condition: 55° ≤ (FOV × F) / H ≤ 80°.

[0028] In one embodiment, the radius of curvature R62 of the second side surface of the sixth lens and the radius of curvature R71 of the first side surface of the seventh lens satisfy: 0.3≤R62 / R71≤3.

[0029] In one embodiment, the radius of curvature R62 of the second side surface of the sixth lens and the radius of curvature R71 of the first side surface of the seventh lens satisfy: 0.9≤R62 / R71≤1.1.

[0030] In one embodiment, the optical lens satisfies at least one of the following conditional expressions: TTL / DMAX≤5, -10≤R42 / F<0, 0.2≤F45 / F≤3, 0.5≤F5~7 / F≤6, 0.8≤D / DST≤3.5, -4≤(R42 / D42) / (R51 / D51)≤-0.3, D / H / FOV×1°≤0.025, -8≤F23 / F≤-0.5, -45≤R31 / F≤-0.1, 0<R22 / R31≤4, 1.3≤F / ENPD≤2.0, -10≤R42 / R51<0, -200≤|F2| / F3≤-0.1, |SAGF81 / (D81 / 2)|≤0.35, |SAGF82 / (D82 / 2)|≤0.35, 2.8≤R11 / F, where TTL is the distance from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis, DMAX is the maximum aperture of all lenses in the optical lens, R42 is the radius of curvature of the second side of the fourth lens, F is the overall focal length of the optical lens, F45 is the combined focal length of the fourth lens and the fifth lens, F5~7 is the combined focal length of the fifth lens, the sixth lens and the seventh lens, DST is the effective aperture of the diaphragm located between the fourth lens and the fifth lens, D42 is the effective light passing aperture corresponding to the second side of the fourth lens at the maximum field angle, R51 is the radius of curvature of the first side of the fifth lens, D51 is the effective light passing aperture corresponding to the first side of the fifth lens at the maximum field angle, D is the effective light passing aperture corresponding to the first side of the first lens at the maximum field angle, H is the image height corresponding to the maximum field angle of the optical lens, FOV is the maximum field angle of the optical lens, F23 is the combined focal length of the second lens and the third lens, R31 is the radius of curvature of the first side of the third lens, R22 is the radius of curvature of the second side of the second lens, ENPD is the entrance pupil diameter of the optical lens, F2 is the focal length of the second lens, F3 is the focal length of the third lens, SAGF81 is the sag of the first side of the eighth lens, D81 is the effective light passing aperture corresponding to the first side of the eighth lens at the maximum field angle, SAGF82 is the sag of the second side of the eighth lens, D82 is the effective light passing aperture corresponding to the second side of the eighth lens at the maximum field angle, and R11 is the radius of curvature of the first side of the first lens.

[0031] In one embodiment, the optical lens satisfies at least one of the following conditions: TTL / F≤5.5, 0.075≤d56 / TTL≤0.3, 6≤|F2 / F|, 4.5≤|F8 / F|, d45 / TTL≤0.05, -15≤F3 / F≤-0.65, TTL / H / FOV×1°≤0.045, F4 / F≤2.8, F5 / F≤4, 1.5≤F67 / F≤10, 0.5≤(H / 2) / (F*tan(θ / 2))≤0.8, 3.6≤R11 / R12≤75, TTL / DMAX≤3.5, -7≤R42 / F≤-0.25, 0.5≤F45 / F≤2, 0.8 ≤F5~7 / F≤4, 1≤D / DST≤2.8, -3≤(R42 / D42) / (R51 / D51)≤-0.5, D / H / FOV×1 °≤0.018,-6≤F23 / F≤-1,-25≤R31 / F≤-0.25,0.7≤R22 / R31≤2.5,1.4≤F / E NPD≤1.8, 50°≤(FOV×F) / H, -5≤R42 / R51≤-0.3, 0.8≤R62 / R71≤1.3, -120≤|F2| / F3≤-0.65, |SAGF81 / (D81 / 2)|≤0.25, |SAGF82 / (D82 / 2)|≤0.2, 3.2≤R11 / F≤80, where TTL is the distance on the optical axis from the center of the first side of the first lens to the imaging plane of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, FOV is the maximum field of view of the optical lens, F is the total focal length of the optical lens, θ is the radian value corresponding to the maximum field of view of the optical lens, DMAX is the largest aperture among all lenses in the optical lens, D is the effective light-transmitting aperture corresponding to the first side of the first lens at the maximum field of view, and ENPD is the entrance pupil diameter of the optical lens. d56 is the air gap between the fifth and sixth lenses on the optical axis, d45 is the air gap between the fourth and fifth lenses on the optical axis, F2 is the focal length of the second lens, F3 is the focal length of the third lens, F4 is the focal length of the fourth lens, F5 is the focal length of the fifth lens, F67 is the combined focal length of the sixth and seventh lenses, F8 is the focal length of the eighth lens, R11 is the radius of curvature of the first side surface of the first lens, R12 is the radius of curvature of the second side surface of the first lens, and R42 is the radius of curvature of the second side surface of the fourth lens. Radius, F45 is the combined focal length of the fourth and fifth lenses, F5-7 are the combined focal lengths of the fifth, sixth, and seventh lenses, DST is the effective aperture of the aperture between the fourth and fifth lenses, D42 is the effective aperture of the second side of the fourth lens at its maximum field of view, R51 is the radius of curvature of the first side of the fifth lens, D51 is the effective aperture of the first side of the fifth lens at its maximum field of view, F23 is the combined focal length of the second and third lenses, R31 is the radius of curvature of the first side of the third lens, R22 is the radius of curvature of the second side of the second lens, R62 is the radius of curvature of the second side of the sixth lens, R71 is the radius of curvature of the first side of the seventh lens, SAGF81 is the sag of the first side of the eighth lens, D81 is the effective aperture of the first side of the eighth lens at its maximum field of view, SAGF82 is the sag of the second side of the eighth lens, D82 is the effective aperture of the second side of the eighth lens at its maximum field of view.

[0032] In one embodiment, the optical lens satisfies at least one of the following conditions: 4.3132≤TTL / F≤4.9636, 0.092727816≤d56 / TTL≤0.1805, 7.2459≤|F2 / F|≤218.9206, 5.5024≤|F8 / F|≤51.7769, 0.0033≤d45 / TTL≤0.0221, -9.8374≤F3 / F≤-2.4624, 0.0275≤TTL / H / FOV×1°≤0.0295, 1. 9920≤F4 / F≤2.5063, 2.2214≤F5 / F≤3.6550, 3.8629≤F67 / F≤6.2480, 0.6285≤(H / 2) / (F*tan(θ / 2))≤0.6995, 3.7652 ≤R11 / R12≤42.5813, 2.2126≤TTL / DMAX≤2.6615, -3.0258≤R42 / F≤-1.4980, 1.1366≤F45 / F≤1.4095, 1.5603≤F5~7 / F≤ 2.197415742, 1.4420≤D / DST≤1.7253, -1.8240≤(R42 / D42) / (R51 / D51)≤-0.9419, 0.0107≤D / H / FOV×1°≤0.0128, -3 .7404≤F23 / F≤-2.0825, -19.0561≤R31 / F≤-0.959953486, 1.1240≤R22 / R31≤1.9655, 1.3≤F / ENPD≤1.6400, 1.6400≤F / ENPD≤2.0, 58.6314°≤(FOV×F) / H≤65.8674°, -1.8568≤R42 / R51≤-0.9073, 0.3≤R62 / R71≤1, 1≤R62 / R71≤3, -85.2071≤|F2| / F3≤-1.0351, 0.0684≤|SAGF81 / (D81 / 2)|≤0.1763, 0.0365≤|SAGF82 / (D82 / 2)|≤0.1490, 3.3579≤R11 / F≤46.8708, where TTL is the distance on the optical axis from the center of the first side of the first lens to the imaging plane of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, FOV is the maximum field of view of the optical lens, F is the total focal length of the optical lens, θ is the radian value corresponding to the maximum field of view of the optical lens, DMAX is the largest aperture among all lenses in the optical lens, D is the effective light-transmitting aperture corresponding to the first side of the first lens at the maximum field of view, ENPD is the entrance pupil diameter of the optical lens, and d56 d45 is the air gap between the fifth and sixth lenses on the optical axis, d45 is the air gap between the fourth and fifth lenses on the optical axis, F2 is the focal length of the second lens, F3 is the focal length of the third lens, F4 is the focal length of the fourth lens, F5 is the focal length of the fifth lens, F67 is the combined focal length of the sixth and seventh lenses, F8 is the focal length of the eighth lens, R11 is the radius of curvature of the first side surface of the first lens, R12 is the radius of curvature of the second side surface of the first lens, and R42 is the radius of curvature of the second side surface of the fourth lens. F45 is the combined focal length of the fourth and fifth lenses; F5-7 are the combined focal lengths of the fifth, sixth, and seventh lenses; DST is the effective aperture of the aperture stop located between the fourth and fifth lenses; D42 is the effective aperture of the second side of the fourth lens at its maximum field of view; R51 is the radius of curvature of the first side of the fifth lens; D51 is the effective aperture of the first side of the fifth lens at its maximum field of view; F23 is the combined focal length of the second and third lenses; R31 is the radius of curvature of the first side of the third lens; R22 is the radius of curvature of the second side of the second lens; R62 is the radius of curvature of the second side of the sixth lens; R71 is the radius of curvature of the first side of the seventh lens; SAGF81 is the sag of the first side of the eighth lens; D81 is the effective aperture of the first side of the eighth lens at its maximum field of view; SAGF82 is the sag of the second side of the eighth lens; D82 is the effective aperture of the second side of the eighth lens at its maximum field of view.

[0033] Another aspect of this application provides an electronic device, which 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. Attached Figure Description

[0034] 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:

[0035] Figure 1 This is a schematic diagram of the composition structure of an optical lens according to Embodiment 1 of this application;

[0036] Figure 2This is a schematic diagram of the composition structure of an optical lens according to Embodiment 2 of this application;

[0037] Figure 3 This is a schematic diagram of the composition structure of an optical lens according to Embodiment 3 of this application;

[0038] Figure 4 This is a schematic diagram of the composition structure of an optical lens according to Embodiment 4 of this application;

[0039] Figure 5 This is a schematic diagram of the composition structure of an optical lens according to Embodiment 5 of this application;

[0040] Figure 6 This is a schematic diagram of the composition structure of an optical lens according to Embodiment 6 of this application;

[0041] Figure 7 This is a schematic diagram of the composition structure of the optical lens according to Embodiment 7 of this application;

[0042] Figure 8 This is a schematic diagram of the composition structure of an optical lens according to Embodiment 8 of this application;

[0043] Figure 9 This is a schematic diagram of the composition structure of an optical lens according to Embodiment 9 of this application;

[0044] Figure 10 This is a schematic diagram of the composition structure of the optical lens according to Embodiment 10 of this application;

[0045] Figure 11 This is a schematic diagram of the composition structure of an optical lens according to Embodiment 11 of this application;

[0046] Figure 12 This is a schematic diagram of the composition structure of an optical lens according to Embodiment 12 of this application;

[0047] Figure 13 This is a schematic diagram of the composition structure of an optical lens according to Embodiment 13 of this application;

[0048] Figure 14 This is a schematic diagram of the composition structure of an optical lens according to Embodiment 14 of this application;

[0049] Figure 15 This is a schematic diagram of the composition structure of an optical lens according to Embodiment 15 of this application;

[0050] Figure 16 This is a schematic diagram of the composition structure of an optical lens according to Embodiment 16 of this application. Detailed Implementation

[0051] 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.

[0052] It should be noted that in this specification, the terms "first," "second," 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, and the second lens may also be referred to as the first lens.

[0053] 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.

[0054] In this paper, 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 first side is called the first side surface of the lens, the surface of each lens closest to the second side is called the second side surface of the lens, and the surface of an optical lens closest to the second side is called the second side surface of the optical lens.

[0055] 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.

[0056] 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 a meaning consistent with their meaning in the context of the relevant art and shall not be interpreted in an idealized or overly formalized sense, unless expressly so specified herein.

[0057] 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.

[0058] The features, principles and other aspects of this application are described in detail below.

[0059] In an exemplary embodiment, the optical lens includes, for example, eight lenses with optical power, namely a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. These eight lenses are arranged sequentially along the optical axis from the first side to the second side.

[0060] In an exemplary embodiment, the optical lens provided in this application can be used as, for example, a vehicle-mounted lens. In this case, the first side of the optical lens can be the object side, and the second side can be the image side. Light from the object side can be imaged on the image side.

[0061] In an exemplary embodiment, the optical lens provided in this application can be used as, for example, a projection lens or a lidar transmitting lens. In this case, the first side of the optical lens can be the imaging side, and the second side can be the image source side. Light from the image source side can be imaged on the imaging side.

[0062] In an exemplary embodiment, the first lens may have negative optical power, its first side surface may be convex, and its second side surface may be concave. The negative optical power of the first lens allows it to collect light rays at large angles and diverge them into the rear optical system, increasing light transmission. The convex first side surface of the first lens reduces the interference of water droplets on image quality in rainy or snowy conditions and facilitates the collection of light rays with a wider field of view. The concave second side surface of the first lens rapidly diverges large-angle light rays passing through its first side surface, which helps the rear optical system correct aberrations in large-angle light rays, achieving high resolution.

[0063] In an exemplary embodiment, the second lens may have positive optical power, with its first side surface being concave and its second side surface being convex. The positive optical power of the second lens balances the negative optical power of the lenses in front and behind it, correcting aberrations and improving lens resolution. The concave first side surface of the second lens can cooperate with the concave second side surface of the first lens, allowing light to be smoothly received by the second lens, reducing the front aperture and facilitating lens miniaturization. Furthermore, it can appropriately diverge the upward-sloping light emitted from the second side surface of the first lens, allowing peripheral light to transition smoothly and reach a higher imaging position, which not only helps reduce lens sensitivity but also increases light transmission. The convex second side surface of the second lens can deflect and converge light, facilitating a smoother entry of light into the third lens, reducing the aperture of the rear lens group, and simultaneously reducing lens sensitivity.

[0064] In an exemplary embodiment, the second lens may have negative optical power, with its first side surface being concave and its second side surface being convex. The negative optical power of the second lens allows for further smoothing of the light collected by the first lens, which helps to widen the light beam to achieve the required imaging size. The concave first side surface of the second lens can cooperate with the concave second side surface of the first lens, allowing the light to be smoothly received by the second lens, reducing the front aperture of the lens and facilitating lens miniaturization. The concave first side surface of the second lens also further diverges the light emitted from the second side surface of the first lens, enabling peripheral light to reach a higher imaging position even with a smaller aperture. The convex second side surface of the second lens can appropriately converge the light, allowing it to enter the third lens more smoothly, enabling more peripheral light to enter the rear optical system, improving the illumination of the peripheral field of view and the lens's light transmission, while simultaneously reducing the aperture of the rear lens group and lowering the lens's sensitivity.

[0065] In an exemplary embodiment, the third lens may have negative optical power, with its first side surface being concave and its second side surface being convex. The negative optical power of the third lens allows it to diverge forward light rays before they enter the rear optical system, which is beneficial for use with the second lens to achieve overall divergence of the light rays emitted from the first lens, allowing peripheral light rays to reach a higher imaging position. The concave first side surface of the third lens further diverges the light rays emitted from the second side surface of the second lens, allowing peripheral light rays to reach a higher imaging position; it also helps to increase the optical path difference between the central and peripheral field of view rays, reducing imaging interference and improving the lens's resolving quality. The convex second side surface of the third lens converges light rays, allowing them to enter the fourth lens more smoothly, enabling more peripheral field of view rays to enter the rear optical system and increasing the lens's light transmission.

[0066] In an exemplary embodiment, the fourth lens may have positive optical power, its first side surface may be planar, and its second side surface may be convex. Having positive optical power and a planar first side surface facilitates lens assembly and reduces lens sensitivity, preventing aberrations caused by large-angle light. The convex second side surface of the fourth lens moderately compresses the divergence of light, reducing light energy loss.

[0067] In an exemplary embodiment, the fourth lens may have positive optical power, and its first side surface may be convex, and its second side surface may be convex. The fourth lens has positive optical power, and its first and second side surfaces are biconvex, allowing light to converge twice. This not only smoothly transmits the light collected by the front optical system to the rear optical system, reducing lens sensitivity, but also deflects and converges the light, thereby reducing the rear aperture of the lens.

[0068] In an exemplary embodiment, the fourth lens may have positive optical power, with its first side surface being concave and its second side surface being convex. The positive optical power of the fourth lens allows it to deflect and converge incident light rays, reducing the rear aperture of the lens. The concave first side surface of the fourth lens can appropriately diverge the light rays emitted from the third lens, smoothly transitioning the light to the imaging plane and reducing aberrations. The convex second side surface of the fourth lens can deflect and converge light rays, sharing the converging effect of the fifth lens, facilitating a smoother entry of light into the fifth lens, reducing the aperture of the rear lens group, and simultaneously lowering lens sensitivity. Furthermore, when used in conjunction with the positive optical power fifth lens, it can gradually deflect and converge the divergent light rays from the entire front optical system, smoothly transmitting them to the rear optical system and reducing the overall lens sensitivity.

[0069] In an exemplary embodiment, the fifth lens may have positive optical power, and its first side surface may be convex, as may its second side surface. The fifth lens, having positive optical power and with its first and second sides being biconvex, can smoothly transmit forward light to the rear optical system, effectively reducing light loss over a wide field of view. Simultaneously, it can form a continuous convex surface with the front and rear lenses, effectively compressing light and reducing the rear aperture and total track length (TTL). Furthermore, when used in conjunction with a fourth lens having positive optical power, it can gradually converge and deflect the diverging light from the front optical system, smoothly transmitting it to the rear optical system and reducing the overall sensitivity of the lens. It can also quickly converge light to the imaging plane, contributing to a reduction in the total optical length and enabling lens miniaturization.

[0070] In an exemplary embodiment, the fifth lens may have positive optical power, with its first side surface being convex and its second side surface being concave. The fifth lens, having positive optical power, can deflect and converge incident light rays. When used in conjunction with a fourth lens that also has positive optical power, it can gradually deflect and converge the divergent light rays from the front optical system, smoothly transmitting them to the rear optical system and reducing the overall sensitivity of the lens. The first side surface of the fifth lens is convex, which further converges the light rays emitted from the fourth lens, reducing the aperture of the rear lens and converging the light rays to quickly reach the imaging plane, thus reducing the overall optical length and achieving lens miniaturization. The second side surface of the fifth lens is concave, which allows for a smooth transition of the light rays converged from the first side surface.

[0071] In an exemplary embodiment, the sixth lens may have positive optical power, and its first side surface may be convex, as may its second side surface. The sixth lens having positive optical power and its first and second sides being biconvex allows for a smooth transition of converging light rays from the front, reducing the aperture and overall optical length of subsequent lenses. Furthermore, it can converge light rays twice, not only smoothly transmitting the light collected by the front optical system to the rear optical system, reducing lens sensitivity, but also causing the light rays to bend and converge, thereby reducing the rear aperture of the lens.

[0072] In an exemplary embodiment, the sixth lens may have negative optical power, with its first side surface being convex and its second side surface being concave. The negative optical power of the sixth lens allows it to diverge the light rays converged by the fourth and fifth lenses, enabling them to reach a higher imaging position and appropriately widening the optical path length of each field of view, thus reducing imaging interference. The convex first side surface of the sixth lens converges the light rays, allowing them to smoothly enter the next lens and reducing the aperture of the rear lens. The concave second side surface of the sixth lens smoothly diverges the light rays backward, which helps to reduce CRA (Collateral Radiation Amplitude).

[0073] In an exemplary embodiment, the seventh lens may have negative optical power, its first side surface may be concave, and its second side surface may be convex. The seventh lens, having negative optical power, can be cemented together with a sixth lens having positive optical power to effectively eliminate aberrations and improve the lens's resolving power. Simultaneously, it can diverge the light rays converged by the fourth, fifth, and sixth lenses, allowing the light to reach a higher imaging position, which helps reduce CRA (Collateral Aberration). The second side surface of the seventh lens is convex, which can gently converge the light rays, shortening the distance to the imaging plane and helping to reduce the overall length of the lens.

[0074] In an exemplary embodiment, the seventh lens may have negative optical power, and its first side surface may be concave, as may its second side surface. The seventh lens, with its negative optical power, can be cemented together with the sixth lens, which has positive optical power, to effectively eliminate aberrations and improve the lens's resolving power. Simultaneously, it can diverge the light rays converged by the fourth, fifth, and sixth lenses, allowing the light to reach a higher imaging position, thus reducing CRA (Collateral Refractive Index). The second side surface of the seventh lens is concave, which can diverge the light rays, sharing the diverging effect of the periphery of the first side surface of the eighth lens. This helps reduce the peripheral curvature of the first side surface of the eighth lens, making the eighth lens flat and contributing to the overall stability of the lens surface after high and low temperature stress, ensuring the lens still has high resolving power.

[0075] In an exemplary embodiment, the seventh lens may have positive optical power, and its first side surface may be convex, as may its second side surface. The seventh lens, having positive optical power, can be cemented together with a sixth lens having negative optical power to effectively eliminate aberrations and improve the lens's resolving power. The first and second sides of the seventh lens are biconvex, which can compress light, allowing it to smoothly and steadily enter the eighth lens, reducing the lens's sensitivity. It can also cause light to bend and converge, reaching the imaging plane more quickly, thus reducing the overall length of the lens.

[0076] In an exemplary embodiment, the eighth lens may have negative optical power, with its first side surface being convex and its second side surface being concave. The negative optical power of the eighth lens allows it to diverge the central light rays, balancing the optical path lengths of the central and peripheral rays, reducing aberrations, and improving the lens's resolving power. The convex first side surface of the eighth lens, combined with the convex second side surface of the seventh lens, allows for a smooth transition of light, reducing the lens's sensitivity. The concave second side surface of the eighth lens diverges the central light rays, allowing them to reach a higher imaging position. Simultaneously, the reverse curvature of the eighth lens's periphery converges the peripheral light rays, reducing the angle of incidence of light entering the chip, thus improving lens illumination and reducing chromatic aberration.

[0077] In an exemplary embodiment, the eighth lens may have negative optical power, and its first side surface may be concave, and its second side surface may be concave. The eighth lens has negative optical power, and both its first and second side surfaces are concave, which can diverge the light rays incident from the front optical system, causing peripheral and central rays to bend upwards and reach a higher imaging position. Simultaneously, combined with the reverse bending of the periphery of the second side surface of the eighth lens, it converges the peripheral light rays, reducing the angle of incidence of light entering the chip, thus helping to improve lens illumination and reduce lens chromatic aberration.

[0078] In an exemplary embodiment, the eighth lens may have positive optical power, with its first side surface being convex and its second side surface being concave. The positive optical power of the eighth lens can balance the aberrations present when the sixth lens is a negative lens, converging the light rays incident on the front optical system and helping to reduce the overall length of the optical lens. The convex first side surface of the eighth lens can be paired with the convex second side surface of the seventh lens, allowing for a smooth transition of light and reducing lens sensitivity. The concave second side surface of the eighth lens can diverge the central light rays, allowing them to reach a higher imaging position. Simultaneously, the reverse curvature of the periphery of the second side surface of the eighth lens converges peripheral light rays, reducing the angle of incidence of light entering the chip, thus improving lens illumination and reducing chromatic aberration.

[0079] In an exemplary embodiment, the sixth lens can be cemented with the seventh lens to form a doublet lens. The advantages of a doublet lens are: it can reduce the air gap between the two lenses, thus reducing the overall system length; the two lenses have complementary dispersion, which helps reduce chromatic aberration and improve image quality; it can reduce the number of assembly components between the two lenses, reducing processes and lowering costs; it can reduce field curvature and correct off-axis point aberrations of the system; and it allows for proper focal length allocation, which helps achieve thermal compensation and obtain good temperature performance. By cementing the sixth and seventh lenses, various aberrations of the optical lens can be fully corrected, and resolution can be improved and optical performance such as distortion and CRA can be optimized while maintaining a compact structure.

[0080] In an exemplary embodiment, the second and eighth lenses can be aspherical lenses. Using aspherical lenses for the second and eighth lenses helps correct field curvature and improves the lens's resolving power; the eighth lens, in particular, has a reverse curvature, which further balances aberrations and improves the lens's resolving power. The first and second side surfaces of each of the first, third, to seventh lenses in this application can be aspherical or spherical. This application does not specifically limit the number of spherical and aspherical surfaces in the lenses; when image quality is a primary concern, the number of aspherical surfaces can be increased, and even all lenses can be aspherical. Specifically, to improve the resolving quality of the optical lens, the first, second, third, fourth, fifth, sixth, seventh, and eighth lenses can all be aspherical lenses. Aspherical lenses are characterized by a continuously changing curvature from the lens center to the periphery. Unlike spherical lenses, which have a constant curvature from the lens center to the periphery, aspherical lenses have 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 the image quality of the lens. In an exemplary embodiment, the optical lens of this application may include an aperture stop to further improve the image quality of the optical lens. For example, the aperture stop may be located between the fourth lens and the fifth lens. By setting an aperture stop between the fourth lens and the fifth lens, it is beneficial to effectively converge the light entering the optical lens, reduce the lens aperture at the rear end of the optical lens, and reduce the assembly sensitivity of the optical lens.

[0081] In an exemplary embodiment, the optical lens of this application can satisfy: TTL / F≤6, where TTL is the distance on the optical axis from the center of the first side of the first lens to the imaging plane of the optical lens, i.e., the total optical length of the optical lens, and F is the total focal length of the optical lens. TTL and F can further satisfy: TTL / F≤5.5. By controlling the ratio of the total optical length to the total focal length of the optical lens, a longer focal length and miniaturization of the optical lens can be achieved.

[0082] In an exemplary embodiment, the optical lens of this application can satisfy: TTL / H / FOV ≤ 0.06, where TTL is the distance on the optical axis from the center of the first side of the first lens to the imaging surface of the optical lens, i.e., the total optical length of the optical lens; H is the image height corresponding to the maximum field of view of the optical lens; and FOV is the maximum field of view of the optical lens. TTL, H, and FOV can further satisfy: TTL / H / FOV ≤ 0.045. TTL, H, and FOV can further satisfy: TTL / H / FOV ≤ 0.035. By controlling the ratio of the total optical length, image height, and maximum field of view of the optical lens, miniaturization and a large image plane of the optical lens can be achieved.

[0083] In an exemplary embodiment, the optical lens of this application can satisfy: TTL / DMAX≤5, where TTL is the distance on the optical axis from the center of the first side of the first lens to the imaging plane of the optical lens, i.e., the total optical length of the optical lens, and DMAX is the maximum aperture among all lenses in the optical lens. TTL and DMAX can further satisfy: TTL / DMAX≤3.5. By controlling the ratio of the total optical length of the optical lens to the maximum aperture among all lenses to be small, the entire optical lens can be made more compact, achieving miniaturization of the optical lens.

[0084] In an exemplary embodiment, the optical lens of this application can satisfy: F4 / F≤3.6, where F4 is the focal length of the fourth lens and F is the total focal length of the optical lens. F4 and F can further satisfy: F4 / F≤2.8. By controlling the fourth lens to have a positive focal length and a relatively small focal length, it is possible to redirect light rays that are diverging upwards, quickly converging the light and reducing the overall optical length and rear aperture. Simultaneously, in conjunction with the two convex surfaces at the front and rear, namely the second side surface of the third lens and the first side surface of the fifth lens, the converging effect of the light rays allows for smooth light transmission, helping to reduce the sensitivity of the optical lens.

[0085] In an exemplary embodiment, the optical lens of this application can satisfy: -10≤R42 / F<0, where R42 is the radius of curvature of the second side surface of the fourth lens, and F is the focal length of the entire optical lens. R42 and F can further satisfy: -7≤R42 / F≤-0.25. By making the second side surface of the fourth lens convex, light rays that tend to rise after passing through this surface can be quickly deflected and converged, reducing the aperture of the rear lens; simultaneously, the combination of the first side surface of the fifth lens being convex allows light rays to converge quickly and reach the imaging plane as soon as possible, helping to reduce the overall optical length of the optical lens.

[0086] In an exemplary embodiment, the optical lens of this application can satisfy: 0.2≤F45 / F≤3, where F45 is the combined focal length of the fourth and fifth lenses, and F is the overall focal length of the optical lens. F45 and F can further satisfy: 0.5≤F45 / F≤2. The fourth and fifth lenses are two consecutive lenses with positive optical power, playing a major role in rapidly converging light to the rear optical system. By controlling the combined focal length of the fourth and fifth lenses to be relatively small, it is beneficial for the front lens to diverge and expand the light beam to achieve the required imaging size, and it also leaves space for the rear lens to smoothly transition and balance aberrations.

[0087] In an exemplary embodiment, the optical lens of this application can satisfy: 0.5≤F5~7 / F≤6, where F5~7 is the combined focal length of the fifth, sixth, and seventh lenses, and F is the overall focal length of the optical lens. F5~7 and F can further satisfy: 0.8≤F5~7 / F≤4. By ensuring that the fifth, sixth, and seventh lenses have a positive focal length, light rays that have been deflected by the fourth lens can be further converged into the eighth lens, effectively reducing the total optical length. Simultaneously, by controlling the air gap between the fifth and sixth lenses on the optical axis, light can smoothly enter the sixth lens, reducing CRA (Collateral Radiation Amplitude) and improving the imaging quality of the optical lens.

[0088] In an exemplary embodiment, the optical lens of this application can satisfy: d45 / TTL≤0.1, where d45 is the air gap between the fourth and fifth lenses on the optical axis, and TTL is the distance from the center of the first side of the first lens to the imaging plane of the optical lens on the optical axis, i.e., the total optical length of the optical lens. d45 and TTL can further satisfy: d45 / TTL≤0.05. By controlling the air gap between the fourth and fifth lenses on the optical axis to be small, on the one hand, it is beneficial to smoothly receive light, reduce light energy loss, and help reduce the total optical length and the aperture of the fifth lens, thus achieving miniaturization of the optical lens; on the other hand, it allows space for subsequent lenses to converge smoothly and balance aberrations, improving the resolving power of the optical lens.

[0089] In an exemplary embodiment, the optical lens of this application can satisfy: 0.8 ≤ D / DST ≤ 3.5, where D is the effective aperture of the first side of the first lens at the maximum field of view, and DST is the effective aperture of the aperture stop located between the fourth and fifth lenses. D and DST can further satisfy: 1 ​​≤ D / DST ≤ 2.8. By controlling the effective aperture of the first lens to be smaller under the same aperture size, it is helpful to achieve miniaturization of the front end of the optical lens.

[0090] In an exemplary embodiment, the optical lens of this application can satisfy: -4≤(R42 / D42) / (R51 / D51)≤-0.3, where R42 is the radius of curvature of the second side of the fourth lens, D42 is the effective aperture corresponding to the second side of the fourth lens at the maximum field of view, R51 is the radius of curvature of the first side of the fifth lens, and D51 is the effective aperture corresponding to the first side of the fifth lens at the maximum field of view. R42, D42, R51, and D51 can further satisfy: -3≤(R42 / D42) / (R51 / D51)≤-0.5. By reasonably setting the curvature of the second side of the fourth lens and the first side of the fifth lens to be convex-convex, light can be quickly converged and deflected after passing through the fourth and fifth lenses, and the overall light height can be controlled. This achieves a small aperture at the front end of the optical lens while effectively limiting the size of the rear end of the optical lens.

[0091] In an exemplary embodiment, the optical lens of this application can satisfy: D / H / FOV ≤ 0.025, where D is the effective aperture corresponding to the first side of the first lens at the maximum field of view, H is the image height corresponding to the maximum field of view of the optical lens, and FOV is the maximum field of view of the optical lens. D, H, and FOV can further satisfy: D / H / FOV ≤ 0.018. By keeping the image height and maximum field of view of the optical lens constant while reducing the maximum aperture of the optical lens, miniaturization of the optical lens can be achieved.

[0092] In an exemplary embodiment, the optical lens of this application can satisfy: -20≤F3 / F, where F3 is the focal length of the third lens and F is the total focal length of the optical lens. F3 and F can further satisfy: -15≤F3 / F≤-0.65. F3 and F can further satisfy: -12≤F3 / F≤-1.2. By using a negative focal length for the third lens, the light emitted from the second lens can be diffused, allowing more light to enter the rear optical system and increasing the overall light transmission. Combined with the concave design of the first side of the third lens, this facilitates the achievement of a small aperture at the front end of the optical lens.

[0093] In an exemplary embodiment, the optical lens of this application can satisfy: -8≤F23 / F≤-0.5, where F23 is the combined focal length of the second and third lenses, and F is the overall focal length of the optical lens. F23 and F can further satisfy: -6≤F23 / F≤-1. By using a negative combined focal length for the second and third lenses, large-angle light received from the first lens can be diffused, allowing more light to be transmitted to the rear optical system, which is beneficial for balancing the small aperture and high light transmission of the optical lens front end.

[0094] In an exemplary embodiment, the optical lens of the present application can satisfy: -45 ≤ R31 / F ≤ -0.1, where R31 is the radius of curvature of the first side surface of the third lens, and F is the overall focal length of the optical lens. R31 and F can further satisfy: -25 ≤ R31 / F ≤ -0.25. By making the first side surface of the third lens concave and controlling its radius of curvature, the optical lens can receive the light rays that emerge upward after passing through the second lens with a smaller size, which is beneficial for balancing the small front aperture and high light transmittance of the optical lens and improving the resolution of the optical lens.

[0095] In an exemplary embodiment, the optical lens of the present application can satisfy: 0 < R22 / R31 ≤ 4, where R31 is the radius of curvature of the first side surface of the third lens, and R22 is the radius of curvature of the second side surface of the second lens. R22 and R31 can further satisfy: 0.7 ≤ R22 / R31 ≤ 2.5. By making the second side surface of the second lens convex and the first side surface of the third lens concave and controlling its radius of curvature, the light rays can diverge and be received smoothly between the second lens and the third lens, enabling the second lens and the third lens to balance the small aperture and high light transmittance.

[0096] In an exemplary embodiment, the optical lens of the present application can satisfy: 1.3 ≤ F / ENPD ≤ 2.0, where ENPD is the entrance pupil diameter of the optical lens, and F is the overall focal length of the optical lens. F and ENPD can further satisfy: 1.4 ≤ F / ENPD ≤ 1.8. By controlling the effective focal length and the entrance pupil diameter of the optical lens, it is beneficial to achieve a small f-number FNO, increase the light transmittance, and a large entrance pupil diameter helps to improve the relative illumination of the optical lens.

[0097] In an exemplary embodiment, the optical lens of the present application can satisfy: 45 ≤ (FOV × F) / H, where FOV is the maximum field of view angle of the optical lens, H is the image height corresponding to the maximum field of view angle of the optical lens, and F is the overall focal length of the optical lens. FOV, F, and H can further satisfy: 50 ≤ (FOV × F) / H. FOV, F, and H can further satisfy: 55 ≤ (FOV × F) / H ≤ 80. By controlling FOV, F, and H, the optical lens can simultaneously meet the requirements of long focal length and large field of view, achieving a large angular resolution at the center.

[0098] In an exemplary embodiment, the optical lens of this application can satisfy: -10≤R42 / R51<0, where R42 is the radius of curvature of the second side surface of the fourth lens, and R51 is the radius of curvature of the first side surface of the fifth lens. R42 and R51 can further satisfy: -5≤R42 / R51≤-0.3. By configuring the second side surface of the fourth lens and the first side surface of the fifth lens as convex-convex surfaces, upward-trending light rays can be quickly deflected and converged. This not only reduces the aperture of the rear lens but also allows the light rays to be quickly converged and reach the imaging plane as soon as possible, reducing the overall optical length of the optical lens. Furthermore, the stepwise convergence of the two continuous convex surfaces of the second side surface of the fourth lens and the first side surface of the fifth lens makes the light transition smoother, reducing the overall sensitivity of the optical lens.

[0099] In an exemplary embodiment, the optical lens of this application can satisfy: 0.06≤d56 / TTL≤0.5, where d56 is the air gap between the fifth and sixth lenses on the optical axis, and TTL is the distance from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis, i.e., the total optical length of the optical lens. d56 and TTL can further satisfy: 0.075≤d56 / TTL≤0.3. By reasonably controlling the air gap between the fifth and sixth lenses, and increasing it while miniaturizing it, sensitivity is reduced. Simultaneously, the light converged by the fifth lens can smoothly transition to the sixth lens, improving image quality. Furthermore, the trend of peripheral light entering the sixth lens is flat, contributing to a small CRA (Cost Reflection Area), reducing the energy of light reflected between lenses, and weakening ghosting.

[0100] In an exemplary embodiment, the optical lens of this application can satisfy: 0.3 ≤ R62 / R71 ≤ 3, where R62 is the radius of curvature of the second side surface of the sixth lens, and R71 is the radius of curvature of the first side surface of the seventh lens. R62 and R71 can further satisfy: 0.8 ≤ R62 / R71 ≤ 1.3. R62 and R71 can further satisfy: 0.9 ≤ R62 / R71 ≤ 1.1. By controlling the radius of curvature of the second side surface of the sixth lens and the radius of curvature of the first side surface of the seventh lens, it is beneficial to balance the aberrations of the optical lens.

[0101] In an exemplary embodiment, the optical lens of this application can satisfy: -200≤|F2| / F3≤-0.1, where F2 is the focal length of the second lens and F3 is the focal length of the third lens. F2 and F3 can further satisfy: -120≤|F2| / F3≤-0.65. By reasonably controlling the focal length ratio between the second and third lenses, the degree of light divergence can be adjusted, allowing light rays emitted from the first lens to smoothly transition through the second lens into the third lens and the rear optical system. This not only reduces the sensitivity of the optical lens but also helps to reduce the front aperture of the optical lens.

[0102] In an exemplary embodiment, the optical lens of the present application can satisfy: |SAGF81 / (D81 / 2)|≤0.35, where SAGF81 is the sag of the first surface of the eighth lens, and D81 is the effective clear aperture corresponding to the first surface of the eighth lens at the maximum field angle. SAGF81 and D81 can further satisfy: |SAGF81 / (D81 / 2)|≤0.25. By controlling the sag of the first surface of the eighth lens, the lens becomes relatively flatter, which helps the eighth lens maintain an overall stable surface shape after being subjected to high and low temperature stresses, and the optical lens still has a high resolution ability.

[0103] In an exemplary embodiment, the optical lens of the present application can satisfy: |SAGF82 / (D82 / 2)|≤0.35, where SAGF82 is the sag of the second surface of the eighth lens, and D82 is the effective clear aperture corresponding to the second surface of the eighth lens at the maximum field angle. SAGF82 and D82 can further satisfy: |SAGF82 / (D82 / 2)|≤0.2. By controlling the sag of the second surface of the eighth lens, the lens becomes relatively flatter, which helps the eighth lens maintain an overall stable surface shape after being subjected to high and low temperature stresses, and the optical lens still has a high resolution ability.

[0104] In an exemplary embodiment, the optical lens of the present application can satisfy: F5 / F≤5, where F5 is the focal length of the fifth lens, and F is the overall focal length of the optical lens. F5 and F can further satisfy: F5 / F≤4. By controlling the fifth lens to be positive and allocating an appropriate focal length, the light rays emerging from the fourth lens can be further converged, reducing the overall optical length and the rear aperture of the optical lens.

[0105] In an exemplary embodiment, the optical lens of the present application can satisfy: 0<F67 / F≤10, where F67 is the combined focal length of the sixth and seventh lenses, and F is the overall focal length of the optical lens. F67 and F can further satisfy: 1.5≤F67 / F≤10. F67 and F can further satisfy: 2.5≤F67 / F≤8.5. By controlling the combined focal length of the doublet lens of the sixth and seventh lenses to be positive, it is beneficial for the light rays to continue entering the rear in a converging trend, reducing the overall optical length of the optical lens. And by allocating an appropriate focal length, it is beneficial for the light rays to smoothly transition to the rear. Together with the relatively large air gap between the fifth and sixth lenses, on the basis of miniaturizing the optical lens, the light rays have a gentle trend in the cemented part, reducing the sensitivity of the optical lens.

[0106] In an exemplary embodiment, the optical lens of this application can satisfy: 3≤|F8 / F|, where F8 is the focal length of the eighth lens and F is the total focal length of the optical lens group. F8 and F can further satisfy: 4.5≤|F8 / F|. By controlling the focal length of the eighth lens to be relatively large, it is beneficial for light to be incident smoothly onto the imaging plane, reducing CRA (Collateral Radiation).

[0107] In an exemplary embodiment, the optical lens of this application can satisfy: 0.35≤(H / 2) / (F*tan(θ / 2))≤0.95, where H is the image height corresponding to the maximum field of view of the optical lens, F is the total focal length of the optical lens, and θ is the radian value corresponding to the maximum field of view of the optical lens. H, F, and θ can further satisfy: 0.5≤(H / 2) / (F*tan(θ / 2))≤0.8. By controlling the total focal length and field of view of the optical lens, small distortion can be achieved.

[0108] In an exemplary embodiment, the optical lens of this application can satisfy: 2.8 ≤ R11 / F, where R11 is the radius of curvature of the first side surface of the first lens, and F is the total focal length of the optical lens. R11 and F can further satisfy: 3.2 ≤ R11 / F ≤ 80. By controlling the radius of curvature of the first side surface of the first lens and the total focal length of the optical lens, it is beneficial for the first side surface of the first lens to collect more light from a wider field of view.

[0109] In an exemplary embodiment, the optical lens of this application can satisfy: 3.3 ≤ R11 / R12, where R11 is the radius of curvature of the first side of the first lens, and R12 is the radius of curvature of the second side of the first lens. R11 and R12 can further satisfy: 3.6 ≤ R11 / R12 ≤ 75. By controlling the radii of curvature of the two sides of the first lens, it is beneficial for the first side to collect light rays with a large field of view, and for the large-angle light rays to be rapidly diverged after passing through the second side, which is beneficial for the correction of optical lens aberrations and minimizing distortion.

[0110] In an exemplary embodiment, the optical lens of this application can satisfy: 4.5 ≤ |F2 / F|, where F2 is the focal length of the second lens and F is the total focal length of the optical lens. F2 and F can further satisfy: 6 ≤ |F2 / F|. By controlling the focal length of the second lens to be relatively large, it is beneficial to smoothly transition light to the third lens, improve resolution, and reduce the sensitivity of the optical lens.

[0111] In an exemplary embodiment, the first to eighth lenses can be glass lenses or plastic lenses. This application does not specifically limit the exact number of glass and plastic lenses. Specifically, when image quality and reliability are of paramount importance, the first to eighth lenses can all be aspherical glass lenses. Optical lenses made of glass can suppress the shift of the back focus of imaging system components due to temperature changes, thereby improving system stability. At the same time, using glass avoids problems such as lens blurring caused by high and low temperature changes in the operating environment, and problems affecting the normal use of the lens. Of course, the first to eighth lenses of the optical lens can also be made of a combination of plastic and glass. Of course, in applications with lower temperature stability requirements, the first to eighth lenses of the optical lens can also all be made of plastic. Using plastic to make optical lenses can effectively reduce manufacturing costs.

[0112] In an exemplary embodiment, when the optical lens of this application is used as a general optical lens, it may also include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0113] The optical lens provided according to the above embodiments of this application, through the reasonable setting of parameters such as the shape and power of each lens, achieves at least one beneficial effect such as high resolution, miniaturization, low CRA (chromatic aberration), weak ghosting, and low sensitivity using only eight lenses. Simultaneously, the optical lens also meets the requirements of small size, good stability, low sensitivity, and high production yield. The low CRA of this optical lens effectively prevents stray light from hitting the lens barrel at the rear end of the lens, and also allows for good matching with automotive chips to avoid chromatic aberration and vignetting. Furthermore, this optical lens has excellent temperature performance, resulting in minimal changes in imaging performance and stable image quality under high and low temperature conditions, enabling its use in most environments.

[0114] Those skilled in the art will understand that, without departing from the technical solutions claimed in this application, the number, shape, parameters, etc., of the lenses constituting the optical lens can be changed to obtain the various results and advantages described in this specification. For example, although eight lenses are described as an example in the embodiment, the optical lens is not limited to including eight lenses. If necessary, the optical lens may also include other numbers of lenses.

[0115] Specific embodiments of the optical lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.

[0116] Example 1

[0117] The following is for reference Figure 1 Example 1 of the optical lens according to this application is described. Figure 1A schematic diagram of the composition structure of an optical lens according to Embodiment 1 of this application is shown.

[0118] like Figure 1 As shown, the optical lens E1 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture stop STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter and / or protective glass, and an imaging surface IMA arranged sequentially along the optical axis from the first side to the second side.

[0119] In this embodiment, the first lens L1 has negative optical power, with its first side surface S1 being convex and its second side surface S2 being concave. The second lens L2 has negative optical power, with its first side surface S3 being concave and its second side surface S4 being convex. The third lens L3 has negative optical power, with its first side surface S5 being concave and its second side surface S6 being convex. The fourth lens L4 has positive optical power, with its first side surface S7 being planar and its second side surface S8 being convex. The fifth lens L5 has positive optical power, with its first side surface S10 being convex and its second side surface S11 being convex. The sixth lens L6 has positive optical power, with its first side surface S12 being convex and its second side surface S13 being convex. The seventh lens L7 has negative optical power, with its first side surface S13 being concave and its second side surface S14 being convex. The eighth lens L8 has negative optical power, with its first side surface S15 being convex and its second side surface S16 being concave.

[0120] In this embodiment, the sixth lens L6 and the seventh lens L7 are cemented together to form a doublet lens. The second lens L2 and the eighth lens L8 are aspherical lenses, and the first side surface S15 and the second side surface S16 of the eighth lens L8 have inflection.

[0121] The optical lens of this embodiment can be used as a common optical lens, such as an automotive lens. In this case, light from the object passes sequentially through surfaces S1 to S18 and is finally imaged onto the imaging surface IMA disposed on the second side. An image sensing chip is disposed at the imaging surface IMA. It should be understood that the optical lens of this embodiment can also be used as a projection lens or a lidar emitting lens. In this case, light from the image source surface IMA passes sequentially through surfaces S18 to S1 and is finally projected onto a projection surface (not shown) disposed on the first side. S17 and S18 are the first and second sides of a filter and / or protective glass.

[0122] Table 1 shows the basic parameters of the optical lens of Embodiment 1, where the radius of curvature R and thickness / distance are in millimeters (mm). Regarding "thickness / distance", it should be understood that the thickness / distance in the row of S1 is the center thickness of the first lens L1, the thickness / distance in the row of S2 is the air gap distance between the first lens L1 and the second lens L2, the thickness / distance in the row of S3 is the center thickness of the second lens L2, and so on.

[0123] Table 1

[0124]

[0125]

[0126] In Embodiment 1, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S15 and the second side surface S16 of the eighth lens L8 are aspherical surfaces. The surface shape x of the aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0127]

[0128] Where x 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 R in Table 1 above); k is the conic coefficient; Ai is the i-th order correction coefficient of the aspherical surface. Table 2 below gives the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical surfaces S3, S4, S15, and S16 in Example 1.

[0129] Table 2

[0130]

[0131] Example 2

[0132] The following is for reference Figure 2 Embodiment 2 of the optical lens according to this application is described. In this embodiment and the following embodiments, for the sake of brevity, descriptions similar to those in Embodiment 1 will be omitted. Figure 2 A schematic diagram of the composition structure of an optical lens according to Embodiment 2 of this application is shown.

[0133] like Figure 2 As shown, the optical lens E2 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture stop STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter and / or protective glass, and an imaging surface IMA arranged sequentially along the optical axis from the first side to the second side.

[0134] In this embodiment, the first lens L1 has negative optical power, with its first side surface S1 being convex and its second side surface S2 being concave. The second lens L2 has negative optical power, with its first side surface S3 being concave and its second side surface S4 being convex. The third lens L3 has negative optical power, with its first side surface S5 being concave and its second side surface S6 being convex. The fourth lens L4 has positive optical power, with its first side surface S7 being planar and its second side surface S8 being convex. The fifth lens L5 has positive optical power, with its first side surface S10 being convex and its second side surface S11 being convex. The sixth lens L6 has positive optical power, with its first side surface S12 being convex and its second side surface S13 being convex. The seventh lens L7 has negative optical power, with its first side surface S13 being concave and its second side surface S14 being convex. The eighth lens L8 has negative optical power, with its first side surface S15 being convex and its second side surface S16 being concave.

[0135] In this embodiment, the sixth lens L6 and the seventh lens L7 are cemented together to form a doublet lens. The second lens L2 and the eighth lens L8 are aspherical lenses, and the first side surface S15 and the second side surface S16 of the eighth lens L8 have inflection.

[0136] Table 3 shows the basic parameters of the optical lens of Embodiment 2, where the radius of curvature R and the thickness / distance are in millimeters (mm). In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S15 and the second side surface S16 of the eighth lens L8 are aspherical surfaces. Table 4 shows the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical surface S3, S4, S15, and S16 in Embodiment 2. The surface shape of each aspherical surface can be defined by formula (1) given in Embodiment 1 above.

[0137] Table 3

[0138] Face number radius of curvature R Thickness / Distance Refractive index Nd Dispersion coefficient Vd S1 20.9141 1.2000 1.57 56.04 S2 5.2576 3.1361 S3 -6.6877 2.4395 1.61 25.58 S4 -7.8572 0.7139 S5 -6.0588 1.0705 1.81 22.70 S6 -12.6710 0.1000 S7 endless 2.5891 1.83 42.73 S8 -11.4390 -0.6274 STO endless 0.7274 S10 11.8798 3.3627 1.59 68.34 S11 -33.8339 3.9327 S12 10.8875 4.7973 1.59 68.34 S13 -6.6473 0.6000 1.92 20.88 S14 -42.4634 1.2486 S15 23.4539 2.0378 1.54 56.11 S16 17.7426 1.4500 S17 endless 0.5000 1.52 64.20 S18 endless 0.7179 IMA / /

[0139] Table 4

[0140]

[0141]

[0142] Example 3

[0143] The following is for reference Figure 3 Description of Embodiment 3 of the optical lens according to this application. Figure 3 A schematic diagram of the composition structure of an optical lens according to Embodiment 3 of this application is shown.

[0144] like Figure 3As shown, the optical lens E3 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture stop STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter and / or protective glass, and an imaging surface IMA arranged sequentially along the optical axis from the first side to the second side.

[0145] In this embodiment, the first lens L1 has negative optical power, with its first side surface S1 being convex and its second side surface S2 being concave. The second lens L2 has positive optical power, with its first side surface S3 being concave and its second side surface S4 being convex. The third lens L3 has negative optical power, with its first side surface S5 being concave and its second side surface S6 being convex. The fourth lens L4 has positive optical power, with its first side surface S7 being planar and its second side surface S8 being convex. The fifth lens L5 has positive optical power, with its first side surface S10 being convex and its second side surface S11 being convex. The sixth lens L6 has positive optical power, with its first side surface S12 being convex and its second side surface S13 being convex. The seventh lens L7 has negative optical power, with its first side surface S13 being concave and its second side surface S14 being convex. The eighth lens L8 has negative optical power, with its first side surface S15 being convex and its second side surface S16 being concave.

[0146] In this embodiment, the sixth lens L6 and the seventh lens L7 are cemented together to form a doublet lens. The second lens L2 and the eighth lens L8 are aspherical lenses, and the first side surface S15 and the second side surface S16 of the eighth lens L8 have inflection.

[0147] Table 5 shows the basic parameters of the optical lens of Embodiment 3, where the radius of curvature R and the thickness / distance are in millimeters (mm). In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S15 and the second side surface S16 of the eighth lens L8 are aspherical surfaces. Table 6 shows the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical surface S3, S4, S15, and S16 in Embodiment 3, wherein the surface shape of each aspherical surface can be defined by formula (1) given in Embodiment 1 above.

[0148] Table 5

[0149]

[0150]

[0151] Table 6

[0152]

[0153] Example 4

[0154] The following is for reference Figure 4 Description of Embodiment 4 of the optical lens according to this application. Figure 4 A schematic diagram of the composition structure of an optical lens according to Embodiment 4 of this application is shown.

[0155] like Figure 4 As shown, the optical lens E4 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture stop STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter and / or protective glass, and an imaging surface IMA arranged sequentially along the optical axis from the first side to the second side.

[0156] In this embodiment, the first lens L1 has negative optical power, with its first side surface S1 being convex and its second side surface S2 being concave. The second lens L2 has positive optical power, with its first side surface S3 being concave and its second side surface S4 being convex. The third lens L3 has negative optical power, with its first side surface S5 being concave and its second side surface S6 being convex. The fourth lens L4 has positive optical power, with its first side surface S7 being planar and its second side surface S8 being convex. The fifth lens L5 has positive optical power, with its first side surface S10 being convex and its second side surface S11 being convex. The sixth lens L6 has positive optical power, with its first side surface S12 being convex and its second side surface S13 being convex. The seventh lens L7 has negative optical power, with its first side surface S13 being concave and its second side surface S14 being convex. The eighth lens L8 has negative optical power, with its first side surface S15 being convex and its second side surface S16 being concave.

[0157] In this embodiment, the sixth lens L6 and the seventh lens L7 are cemented together to form a doublet lens. The second lens L2 and the eighth lens L8 are aspherical lenses, and the first side surface S15 and the second side surface S16 of the eighth lens L8 have inflection.

[0158] Table 7 shows the basic parameters of the optical lens of Embodiment 4, where the radius of curvature R and the thickness / distance are in millimeters (mm). In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S15 and the second side surface S16 of the eighth lens L8 are aspherical surfaces. Table 8 shows the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical surface S3, S4, S15, and S16 in Embodiment 4, wherein the surface shape of each aspherical surface can be defined by formula (1) given in Embodiment 1 above.

[0159] Table 7

[0160]

[0161]

[0162] Table 8

[0163]

[0164] Example 5

[0165] The following is for reference Figure 5 Description of Embodiment 5 of the optical lens according to this application. Figure 5 A schematic diagram of the composition structure of an optical lens according to Embodiment 5 of this application is shown.

[0166] like Figure 5 As shown, the optical lens E5 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture stop STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter and / or protective glass, and an imaging surface IMA arranged sequentially along the optical axis from the first side to the second side.

[0167] In this embodiment, the first lens L1 has negative optical power, with its first side surface S1 being convex and its second side surface S2 being concave. The second lens L2 has negative optical power, with its first side surface S3 being concave and its second side surface S4 being convex. The third lens L3 has negative optical power, with its first side surface S5 being concave and its second side surface S6 being convex. The fourth lens L4 has positive optical power, with its first side surface S7 being convex and its second side surface S8 being convex. The fifth lens L5 has positive optical power, with its first side surface S10 being convex and its second side surface S11 being convex. The sixth lens L6 has positive optical power, with its first side surface S12 being convex and its second side surface S13 being convex. The seventh lens L7 has negative optical power, with its first side surface S13 being concave and its second side surface S14 being concave. The eighth lens L8 has negative optical power, with its first side surface S15 being convex and its second side surface S16 being concave.

[0168] In this embodiment, the sixth lens L6 and the seventh lens L7 are cemented together to form a doublet lens. The second lens L2 and the eighth lens L8 are aspherical lenses, and the first side surface S15 and the second side surface S16 of the eighth lens L8 have inflection.

[0169] Table 9 shows the basic parameters of the optical lens of Embodiment 5, where the radius of curvature R and the thickness / distance are in millimeters (mm). In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S15 and the second side surface S16 of the eighth lens L8 are aspherical surfaces. Table 10 shows the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical surface S3, S4, S15, and S16 in Embodiment 5, wherein the surface shape of each aspherical surface can be defined by formula (1) given in Embodiment 1 above.

[0170] Table 9

[0171] Face number radius of curvature R Thickness / Distance Refractive index Nd Dispersion coefficient Vd S1 50.0000 1.2000 1.57 56.04 S2 6.2945 2.7513 S3 -7.1272 2.2149 1.61 25.58 S4 -9.7826 0.8258 S5 -6.6168 0.9000 1.81 22.70 S6 -11.7862 0.1000 S7 endless 1.6968 1.83 42.73 S8 -11.2433 0.4523 STO endless 0.1000 S10 13.2761 5.2823 1.59 68.34 S11 -24.3514 3.6562 S12 8.4809 4.3376 1.59 68.34 S13 -8.7526 0.6000 1.92 20.88 S14 95.2510 1.4801 S15 21.4271 2.8000 1.54 56.11 S16 15.0124 0.4277 S17 endless 0.5000 1.52 64.20 S18 endless 0.7250 IMA / /

[0172] Table 10

[0173]

[0174] Example 6

[0175] The following is for reference Figure 6 Description of Embodiment 6 of the optical lens according to this application. Figure 6 A schematic diagram of the composition structure of an optical lens according to Embodiment 6 of this application is shown.

[0176] like Figure 6 As shown, the optical lens E6 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture stop STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter and / or protective glass, and an imaging surface IMA arranged sequentially along the optical axis from the first side to the second side.

[0177] In this embodiment, the first lens L1 has negative optical power, with its first side surface S1 being convex and its second side surface S2 being concave. The second lens L2 has negative optical power, with its first side surface S3 being concave and its second side surface S4 being convex. The third lens L3 has negative optical power, with its first side surface S5 being concave and its second side surface S6 being convex. The fourth lens L4 has positive optical power, with its first side surface S7 being convex and its second side surface S8 being convex. The fifth lens L5 has positive optical power, with its first side surface S10 being convex and its second side surface S11 being convex. The sixth lens L6 has positive optical power, with its first side surface S12 being convex and its second side surface S13 being convex. The seventh lens L7 has negative optical power, with its first side surface S13 being concave and its second side surface S14 being concave. The eighth lens L8 has negative optical power, with its first side surface S15 being convex and its second side surface S16 being concave.

[0178] In this embodiment, the sixth lens L6 and the seventh lens L7 are cemented together to form a doublet lens. The second lens L2 and the eighth lens L8 are aspherical lenses, and the first side surface S15 and the second side surface S16 of the eighth lens L8 have inflection.

[0179] Table 11 shows the basic parameters of the optical lens of Embodiment 6, where the radius of curvature R and the thickness / distance are in millimeters (mm). In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S15 and the second side surface S16 of the eighth lens L8 are aspherical surfaces. Table 12 shows the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical surface S3, S4, S15, and S16 in Embodiment 6, wherein the surface shape of each aspherical surface can be defined by formula (1) given in Embodiment 1 above.

[0180] Table 11

[0181]

[0182]

[0183] Table 12

[0184]

[0185] Example 7

[0186] The following is for reference Figure 7 Description of Embodiment 7 of the optical lens according to this application. Figure 7 A schematic diagram of the composition structure of an optical lens according to Embodiment 7 of this application is shown.

[0187] like Figure 7 As shown, the optical lens E7 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture stop STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter and / or protective glass, and an imaging surface IMA arranged sequentially along the optical axis from the first side to the second side.

[0188] In this embodiment, the first lens L1 has negative optical power, with its first side surface S1 being convex and its second side surface S2 being concave. The second lens L2 has negative optical power, with its first side surface S3 being concave and its second side surface S4 being convex. The third lens L3 has negative optical power, with its first side surface S5 being concave and its second side surface S6 being convex. The fourth lens L4 has positive optical power, with its first side surface S7 being concave and its second side surface S8 being convex. The fifth lens L5 has positive optical power, with its first side surface S10 being convex and its second side surface S11 being convex. The sixth lens L6 has positive optical power, with its first side surface S12 being convex and its second side surface S13 being convex. The seventh lens L7 has negative optical power, with its first side surface S13 being concave and its second side surface S14 being convex. The eighth lens L8 has negative optical power, with its first side surface S15 being convex and its second side surface S16 being concave.

[0189] In this embodiment, the sixth lens L6 and the seventh lens L7 are cemented together to form a doublet lens. The second lens L2 and the eighth lens L8 are aspherical lenses, and the first side surface S15 and the second side surface S16 of the eighth lens L8 have inflection.

[0190] Table 13 shows the basic parameters of the optical lens of Embodiment 7, where the radius of curvature R and the thickness / distance are in millimeters (mm). In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S15 and the second side surface S16 of the eighth lens L8 are aspherical surfaces. Table 14 shows the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical surface S3, S4, S15, and S16 in Embodiment 7, wherein the surface shape of each aspherical surface can be defined by formula (1) given in Embodiment 1 above.

[0191] Table 13

[0192]

[0193]

[0194] Table 14

[0195]

[0196] Example 8

[0197] The following is for reference Figure 8 Description of Embodiment 8 of the optical lens according to this application. Figure 8 A schematic diagram of the composition structure of an optical lens according to Embodiment 8 of this application is shown.

[0198] like Figure 8 As shown, the optical lens E8 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture stop STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter and / or protective glass, and an imaging surface IMA arranged sequentially along the optical axis from the first side to the second side.

[0199] In this embodiment, the first lens L1 has negative optical power, with its first side surface S1 being convex and its second side surface S2 being concave. The second lens L2 has negative optical power, with its first side surface S3 being concave and its second side surface S4 being convex. The third lens L3 has negative optical power, with its first side surface S5 being concave and its second side surface S6 being convex. The fourth lens L4 has positive optical power, with its first side surface S7 being concave and its second side surface S8 being convex. The fifth lens L5 has positive optical power, with its first side surface S10 being convex and its second side surface S11 being convex. The sixth lens L6 has positive optical power, with its first side surface S12 being convex and its second side surface S13 being convex. The seventh lens L7 has negative optical power, with its first side surface S13 being concave and its second side surface S14 being convex. The eighth lens L8 has negative optical power, with its first side surface S15 being convex and its second side surface S16 being concave.

[0200] In this embodiment, the sixth lens L6 and the seventh lens L7 are cemented together to form a doublet lens. The second lens L2 and the eighth lens L8 are aspherical lenses, and the first side surface S15 and the second side surface S16 of the eighth lens L8 have inflection.

[0201] Table 15 shows the basic parameters of the optical lens of Embodiment 8, where the radius of curvature R and the thickness / distance are in millimeters (mm). In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S15 and the second side surface S16 of the eighth lens L8 are aspherical surfaces. Table 16 shows the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical surface S3, S4, S15, and S16 in Embodiment 8, wherein the surface shape of each aspherical surface can be defined by formula (1) given in Embodiment 1 above.

[0202] Table 15

[0203] Face number radius of curvature R Thickness / Distance Refractive index Nd Dispersion coefficient Vd S1 51.1507 1.2000 1.57 56.04 S2 6.2840 2.8524 S3 -6.7046 2.2770 1.61 25.58 S4 -8.2255 0.5167 S5 -6.5580 1.0922 1.81 22.70 S6 -12.2797 0.1000 S7 -212.4011 2.5731 1.83 42.73 S8 -12.6101 0.1927 STO endless 0.1000 S10 11.3060 3.3365 1.59 68.34 S11 -37.8489 4.0426 S12 9.7328 4.9374 1.59 68.34 S13 -7.0967 0.6000 1.92 20.88 S14 -61.4063 1.4591 S15 25.7120 2.7315 1.54 56.11 S16 17.7656 0.8083 S17 endless 0.5000 1.52 64.20 S18 endless 0.7243 IMA / /

[0204] Table 16

[0205]

[0206] Example 9

[0207] The following is for reference Figure 9 Description of Embodiment 9 of the optical lens according to this application. Figure 9 A schematic diagram of the composition structure of an optical lens according to Embodiment 9 of this application is shown.

[0208] like Figure 9As shown, the optical lens E9 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture stop STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter and / or a protective glass, and an imaging surface IMA arranged sequentially along the optical axis from the first side to the second side.

[0209] In this embodiment, the first lens L1 has negative optical power, with its first side surface S1 being convex and its second side surface S2 being concave. The second lens L2 has negative optical power, with its first side surface S3 being concave and its second side surface S4 being convex. The third lens L3 has negative optical power, with its first side surface S5 being concave and its second side surface S6 being convex. The fourth lens L4 has positive optical power, with its first side surface S7 being planar and its second side surface S8 being convex. The fifth lens L5 has positive optical power, with its first side surface S10 being convex and its second side surface S11 being concave. The sixth lens L6 has positive optical power, with its first side surface S12 being convex and its second side surface S13 being convex. The seventh lens L7 has negative optical power, with its first side surface S13 being concave and its second side surface S14 being convex. The eighth lens L8 has positive optical power, with its first side surface S15 being convex and its second side surface S16 being concave.

[0210] In this embodiment, the sixth lens L6 and the seventh lens L7 are cemented together to form a doublet lens. The second lens L2 and the eighth lens L8 are aspherical lenses, and the first side surface S15 and the second side surface S16 of the eighth lens L8 have inflection.

[0211] Table 17 shows the basic parameters of the optical lens of Embodiment 9, where the radius of curvature R and the thickness / distance are in millimeters (mm). In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S15 and the second side surface S16 of the eighth lens L8 are aspherical surfaces. Table 18 shows the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, and A22 that can be used for each aspherical surface S3, S4, S15, and S16 in Embodiment 9, wherein the surface shape of each aspherical surface can be defined by formula (1) given in Embodiment 1 above.

[0212] Table 17

[0213] Face number radius of curvature R Thickness / Distance Refractive index Nd Dispersion coefficient Vd S1 21.1734 1.2000 1.57 56.04 S2 5.5850 5.0350 S3 -6.0044 1.8050 1.61 25.58 S4 -7.7596 0.4709 S5 -6.9035 1.6103 1.81 22.70 S6 -15.0339 0.1000 S7 endless 1.8399 1.83 42.73 S8 -10.2001 0.1000 STO endless 0.1000 S10 8.6738 2.0719 1.59 68.34 S11 37.4342 4.1739 S12 9.4502 4.7984 1.59 68.34 S13 -6.3748 0.6000 1.92 20.88 S14 -114.6369 0.8556 S15 31.1141 3.0000 1.54 56.11 S16 36.8032 1.0642 S17 endless 0.5000 1.52 64.20 S18 endless 0.7250 IMA / /

[0214] Table 18

[0215]

[0216]

[0217] Example 10

[0218] The following is for reference Figure 10 Description of Embodiment 10 of the optical lens according to this application. Figure 10 A schematic diagram of the composition structure of an optical lens according to Embodiment 10 of this application is shown.

[0219] like Figure 10 As shown, the optical lens E10 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture stop STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter and / or protective glass, and an imaging surface IMA arranged sequentially along the optical axis from the first side to the second side.

[0220] In this embodiment, the first lens L1 has negative optical power, with its first side surface S1 being convex and its second side surface S2 being concave. The second lens L2 has negative optical power, with its first side surface S3 being concave and its second side surface S4 being convex. The third lens L3 has negative optical power, with its first side surface S5 being concave and its second side surface S6 being convex. The fourth lens L4 has positive optical power, with its first side surface S7 being planar and its second side surface S8 being convex. The fifth lens L5 has positive optical power, with its first side surface S10 being convex and its second side surface S11 being concave. The sixth lens L6 has positive optical power, with its first side surface S12 being convex and its second side surface S13 being convex. The seventh lens L7 has negative optical power, with its first side surface S13 being concave and its second side surface S14 being convex. The eighth lens L8 has positive optical power, with its first side surface S15 being convex and its second side surface S16 being concave.

[0221] In this embodiment, the sixth lens L6 and the seventh lens L7 are cemented together to form a doublet lens. The second lens L2 and the eighth lens L8 are aspherical lenses, and the first side surface S15 and the second side surface S16 of the eighth lens L8 have inflection.

[0222] Table 19 shows the basic parameters of the optical lens of Embodiment 10, where the radius of curvature R and the thickness / distance are in millimeters (mm). In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S15 and the second side surface S16 of the eighth lens L8 are aspherical surfaces. Table 20 shows the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical surface S3, S4, S15, and S16 in Embodiment 10, wherein the surface shape of each aspherical surface can be defined by formula (1) given in Embodiment 1 above.

[0223] Table 19

[0224]

[0225]

[0226] Table 20

[0227]

[0228] Example 11

[0229] The following is for reference Figure 11 Description of Embodiment 11 of the optical lens according to this application. Figure 11 A schematic diagram of the composition structure of an optical lens according to Embodiment 11 of this application is shown.

[0230] like Figure 11 As shown, the optical lens E11 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture stop STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter and / or protective glass, and an imaging surface IMA arranged sequentially along the optical axis from the first side to the second side.

[0231] In this embodiment, the first lens L1 has negative optical power, with its first side surface S1 being convex and its second side surface S2 being concave. The second lens L2 has negative optical power, with its first side surface S3 being concave and its second side surface S4 being convex. The third lens L3 has negative optical power, with its first side surface S5 being concave and its second side surface S6 being convex. The fourth lens L4 has positive optical power, with its first side surface S7 being concave and its second side surface S8 being convex. The fifth lens L5 has positive optical power, with its first side surface S10 being convex and its second side surface S11 being convex. The sixth lens L6 has positive optical power, with its first side surface S12 being convex and its second side surface S13 being convex. The seventh lens L7 has negative optical power, with its first side surface S13 being concave and its second side surface S14 being convex. The eighth lens L8 has negative optical power, with its first side surface S15 being concave and its second side surface S16 being concave.

[0232] In this embodiment, the sixth lens L6 and the seventh lens L7 are cemented together to form a doublet lens. The second lens L2 and the eighth lens L8 are aspherical lenses, and the second side surface S16 of the eighth lens L8 has a recurve shape.

[0233] Table 21 shows the basic parameters of the optical lens of Embodiment 11, wherein the units of radius of curvature R and thickness / distance are millimeters (mm). In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S15 and the second side surface S16 of the eighth lens L8 are aspherical surfaces. Table 22 shows the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical surface S3, S4, S15, and S16 in Embodiment 12, wherein the surface shape of each aspherical surface can be defined by formula (1) given in Embodiment 1 above.

[0234] Table 21

[0235] Face number radius of curvature R Thickness / Distance Refractive index Nd Dispersion coefficient Vd S1 303.7321 1.2000 1.57 56.04 S2 7.1330 2.4998 S3 -7.1694 1.9872 1.61 25.58 S4 -8.9723 0.6165 S5 -6.4739 1.0828 1.81 22.70 S6 -11.8621 0.1000 S7 -54.9908 2.1240 1.83 42.73 S8 -10.1815 0.5189 STO endless 0.1000 S10 9.5422 2.2139 1.59 68.34 S11 -76.2543 3.9709 S12 9.9609 4.9477 1.59 68.34 S13 -6.0734 0.9000 1.92 20.88 S14 -29.4576 1.3072 S15 -221.4451 2.8000 1.54 56.11 S16 21.3570 0.3507 S17 endless 0.5000 1.52 64.20 S18 endless 0.7311 IMA / /

[0236] Table 22

[0237]

[0238] Example 12

[0239] The following is for reference Figure 12 Description of Embodiment 12 of the optical lens according to this application. Figure 12 A schematic diagram of the composition structure of an optical lens according to Embodiment 12 of this application is shown.

[0240] like Figure 12 As shown, the optical lens E12 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture stop STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter and / or protective glass, and an imaging surface IMA arranged sequentially along the optical axis from the first side to the second side.

[0241] In this embodiment, the first lens L1 has negative optical power, with its first side surface S1 being convex and its second side surface S2 being concave. The second lens L2 has negative optical power, with its first side surface S3 being concave and its second side surface S4 being convex. The third lens L3 has negative optical power, with its first side surface S5 being concave and its second side surface S6 being convex. The fourth lens L4 has positive optical power, with its first side surface S7 being concave and its second side surface S8 being convex. The fifth lens L5 has positive optical power, with its first side surface S10 being convex and its second side surface S11 being convex. The sixth lens L6 has positive optical power, with its first side surface S12 being convex and its second side surface S13 being convex. The seventh lens L7 has negative optical power, with its first side surface S13 being concave and its second side surface S14 being convex. The eighth lens L8 has negative optical power, with its first side surface S15 being concave and its second side surface S16 being concave.

[0242] In this embodiment, the sixth lens L6 and the seventh lens L7 are cemented together to form a doublet lens. The second lens L2 and the eighth lens L8 are aspherical lenses, and the second side surface S16 of the eighth lens L8 has a recurve shape.

[0243] Table 23 shows the basic parameters of the optical lens of Embodiment 12, wherein the units of radius of curvature R and thickness / distance are millimeters (mm). In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S15 and the second side surface S16 of the eighth lens L8 are aspherical surfaces. Table 24 shows the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical surface S3, S4, S15, and S16 in Embodiment 12, wherein the surface shape of each aspherical surface can be defined by formula (1) given in Embodiment 1 above.

[0244] Table 23

[0245] Face number radius of curvature R Thickness / Distance Refractive index Nd Dispersion coefficient Vd S1 164.0472 1.2000 1.57 56.04 S2 7.1194 2.4882 S3 -7.1649 2.0234 1.61 25.58 S4 -9.2667 0.6258 S5 -6.5353 1.0895 1.81 22.70 S6 -11.8852 0.1000 S7 -59.8649 2.1562 1.83 42.73 S8 -10.2909 0.5014 STO endless 0.1000 S10 9.5304 2.1749 1.59 68.34 S11 -78.7826 4.0271 S12 9.8701 4.9203 1.59 68.34 S13 -6.0734 0.9000 1.92 20.88 S14 -30.0797 1.2679 S15 -223.3634 2.8000 1.54 56.11 S16 21.1259 0.3498 S17 endless 0.5000 1.52 64.20 S18 endless 0.7228 IMA / /

[0246] Table 24

[0247]

[0248]

[0249] Example 13

[0250] The following is for reference Figure 13 Description of Embodiment 13 of the optical lens according to this application. Figure 13 A schematic diagram of the composition structure of an optical lens according to Embodiment 13 of this application is shown.

[0251] like Figure 13 As shown, the optical lens E13 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture stop STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter and / or protective glass, and an imaging surface IMA arranged sequentially along the optical axis from the first side to the second side.

[0252] In this embodiment, the first lens L1 has negative optical power, with its first side surface S1 being convex and its second side surface S2 being concave. The second lens L2 has negative optical power, with its first side surface S3 being concave and its second side surface S4 being convex. The third lens L3 has negative optical power, with its first side surface S5 being concave and its second side surface S6 being convex. The fourth lens L4 has positive optical power, with its first side surface S7 being concave and its second side surface S8 being convex. The fifth lens L5 has positive optical power, with its first side surface S10 being convex and its second side surface S11 being convex. The sixth lens L6 has positive optical power, with its first side surface S12 being convex and its second side surface S13 being convex. The seventh lens L7 has negative optical power, with its first side surface S13 being concave and its second side surface S14 being convex. The eighth lens L8 has positive optical power, with its first side surface S15 being convex and its second side surface S16 being concave.

[0253] In this embodiment, the sixth lens L6 and the seventh lens L7 are cemented together to form a doublet lens. The second lens L2 and the eighth lens L8 are aspherical lenses, and the first side surface S15 and the second side surface S16 of the eighth lens L8 have inflection.

[0254] Table 25 shows the basic parameters of the optical lens of Embodiment 13, wherein the units of radius of curvature R and thickness / distance are millimeters (mm). In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S15 and the second side surface S16 of the eighth lens L8 are aspherical surfaces. Table 26 shows the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical surface S3, S4, S15, and S16 in Embodiment 13, wherein the surface shape of each aspherical surface can be defined by formula (1) given in Embodiment 1 above.

[0255] Table 25

[0256]

[0257]

[0258] Table 26

[0259]

[0260] Example 14

[0261] The following is for reference Figure 14 Description of Embodiment 14 of the optical lens according to this application. Figure 14 A schematic diagram of the composition structure of an optical lens according to Embodiment 14 of this application is shown.

[0262] like Figure 14 As shown, the optical lens E14 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture stop STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter and / or protective glass, and an imaging surface IMA arranged sequentially along the optical axis from the first side to the second side.

[0263] In this embodiment, the first lens L1 has negative optical power, with its first side surface S1 being convex and its second side surface S2 being concave. The second lens L2 has negative optical power, with its first side surface S3 being concave and its second side surface S4 being convex. The third lens L3 has negative optical power, with its first side surface S5 being concave and its second side surface S6 being convex. The fourth lens L4 has positive optical power, with its first side surface S7 being concave and its second side surface S8 being convex. The fifth lens L5 has positive optical power, with its first side surface S10 being convex and its second side surface S11 being convex. The sixth lens L6 has positive optical power, with its first side surface S12 being convex and its second side surface S13 being convex. The seventh lens L7 has negative optical power, with its first side surface S13 being concave and its second side surface S14 being convex. The eighth lens L8 has positive optical power, with its first side surface S15 being convex and its second side surface S16 being concave.

[0264] In this embodiment, the sixth lens L6 and the seventh lens L7 are cemented together to form a doublet lens. The second lens L2 and the eighth lens L8 are aspherical lenses, and the first side surface S15 and the second side surface S16 of the eighth lens L8 have inflection.

[0265] Table 27 shows the basic parameters of the optical lens of Embodiment 14, wherein the units of radius of curvature R and thickness / distance are millimeters (mm). In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S15 and the second side surface S16 of the eighth lens L8 are aspherical surfaces. Table 28 shows the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical surface S3, S4, S15, and S16 in Embodiment 14, wherein the surface shape of each aspherical surface can be defined by formula (1) given in Embodiment 1 above.

[0266] Table 27

[0267]

[0268]

[0269] Table 28

[0270]

[0271] Example 15

[0272] The following is for reference Figure 15 Description of Embodiment 15 of the optical lens according to this application. Figure 15 A schematic diagram of the composition structure of an optical lens according to Embodiment 15 of this application is shown.

[0273] like Figure 15As shown, the optical lens E15 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture stop STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter and / or protective glass, and an imaging surface IMA arranged sequentially along the optical axis from the first side to the second side.

[0274] In this embodiment, the first lens L1 has negative optical power, with its first side surface S1 being convex and its second side surface S2 being concave. The second lens L2 has negative optical power, with its first side surface S3 being concave and its second side surface S4 being convex. The third lens L3 has negative optical power, with its first side surface S5 being concave and its second side surface S6 being convex. The fourth lens L4 has positive optical power, with its first side surface S7 being convex and its second side surface S8 being convex. The fifth lens L5 has positive optical power, with its first side surface S10 being convex and its second side surface S11 being concave. The sixth lens L6 has positive optical power, with its first side surface S12 being convex and its second side surface S13 being convex. The seventh lens L7 has positive optical power, with its first side surface S13 being convex and its second side surface S14 being convex. The eighth lens L8 has negative optical power, with its first side surface S15 being convex and its second side surface S16 being concave.

[0275] In this embodiment, the sixth lens L6 and the seventh lens L7 are cemented together to form a doublet lens. The second lens L2 and the eighth lens L8 are aspherical lenses, and the second side surface S4 of the second lens L2 and the first side surface S15 and the second side surface S16 of the eighth lens L8 have inflection.

[0276] Table 29 shows the basic parameters of the optical lens of Embodiment 15, wherein the units of radius of curvature R and thickness / distance are millimeters (mm). In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S15 and the second side surface S16 of the eighth lens L8 are aspherical surfaces. Table 30 shows the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical surface S3, S4, S15, and S16 in Embodiment 15, wherein the surface shape of each aspherical surface can be defined by formula (1) given in Embodiment 1 above.

[0277] Table 29

[0278] Face number radius of curvature R Thickness / Distance Refractive index Nd Dispersion coefficient Vd S1 74.0966 1.2000 1.57 56.04 S2 7.7036 2.4421 S3 -9.6038 0.9907 1.61 25.58 S4 -14.9064 0.9190 S5 -7.5842 4.2000 1.81 22.70 S6 -11.9143 0.1000 S7 31.8436 1.6044 1.83 42.73 S8 -19.5869 0.2511 STO endless 0.1000 S10 10.5490 1.7093 1.59 68.34 S11 39.5654 2.6693 S12 11.4681 1.4285 1.92 20.88 S13 4.9019 4.4777 1.59 68.34 S14 -28.3402 2.1882 S15 43.8217 2.0299 1.54 56.11 S16 19.1965 1.4500 S17 endless 0.5000 1.52 64.20 S18 endless 0.5188 IMA / /

[0279] Table 30

[0280]

[0281]

[0282] Example 16

[0283] The following is for reference Figure 16 Description of Embodiment 16 of the optical lens according to this application. Figure 16 A schematic diagram of the composition structure of an optical lens according to Embodiment 16 of this application is shown.

[0284] like Figure 16 As shown, the optical lens E15 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture stop STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a filter and / or protective glass, and an imaging surface IMA arranged sequentially along the optical axis from the first side to the second side.

[0285] In this embodiment, the first lens L1 has negative optical power, with its first side surface S1 being convex and its second side surface S2 being concave. The second lens L2 has negative optical power, with its first side surface S3 being concave and its second side surface S4 being convex. The third lens L3 has negative optical power, with its first side surface S5 being concave and its second side surface S6 being convex. The fourth lens L4 has positive optical power, with its first side surface S7 being convex and its second side surface S8 being convex. The fifth lens L5 has positive optical power, with its first side surface S10 being convex and its second side surface S11 being concave. The sixth lens L6 has positive optical power, with its first side surface S12 being convex and its second side surface S13 being convex. The seventh lens L7 has positive optical power, with its first side surface S13 being convex and its second side surface S14 being convex. The eighth lens L8 has negative optical power, with its first side surface S15 being convex and its second side surface S16 being concave.

[0286] In this embodiment, the sixth lens L6 and the seventh lens L7 are cemented together to form a doublet lens. The second lens L2 and the eighth lens L8 are aspherical lenses, and the second side surface S4 of the second lens L2 and the first side surface S15 and the second side surface S16 of the eighth lens L8 have inflection.

[0287] Table 31 shows the basic parameters of the optical lens of Embodiment 16, where the radius of curvature R and the thickness / distance are in millimeters (mm). In this embodiment, the first side surface S3 and the second side surface S4 of the second lens L2, and the first side surface S15 and the second side surface S16 of the eighth lens L8 are aspherical surfaces. Table 32 shows the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical surface S3, S4, S15, and S16 in Embodiment 16, wherein the surface shape of each aspherical surface can be defined by formula (1) given in Embodiment 1 above.

[0288] Table 31

[0289]

[0290]

[0291] Table 32

[0292]

[0293] Tables 33 and 34 provide some optical parameters of the optical lenses in Examples 1 to 16. These include, for example, the overall focal length F, entrance pupil diameter ENPD, total optical length TTL, maximum field of view (FOV), and the focal length of each lens. All focal length, distance, or effective radius values ​​are in millimeters (mm); the unit of FOV is degrees (°).

[0294] Table 33

[0295]

[0296]

[0297] Table 34

[0298]

[0299]

[0300] In summary, the optical lenses of Examples 1 to 16 respectively satisfy the conditions shown in Tables 35 and 36 below.

[0301] Table 35

[0302] Conditional expression Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 TTL / F 4.8160 4.8161 4.7717 4.7441 4.7308 4.7542 4.7401 4.7202 TTL / H / FOV 0.0287 0.0287 0.0292 0.0293 0.0295 0.0290 0.0292 0.0293 TTL / DMAX 2.6002 2.6039 2.5817 2.6180 2.6379 2.6469 2.6158 2.6615 D / H / FOV 0.0110 0.0110 0.0113 0.0112 0.0112 0.0110 0.0112 0.0110 F / ENPD 1.6400 1.6400 1.6400 1.6400 1.6400 1.6400 1.6400 1.6400 (FOV×F) / H 61.5405 61.5770 63.2273 63.8331 64.4801 63.0892 63.6547 64.1200 F4 / F 2.1879 2.1879 2.4384 2.4197 2.2014 2.2972 2.5063 2.4944 R42 / F -1.8366 -1.8366 -2.0470 -2.0312 -1.8480 -1.9284 -1.9859 -1.9812 R42 / R51 -0.9629 -0.9629 -1.1606 -1.1558 -1.0736 -0.9073 -1.1130 -1.1153 F45 / F 1.1806 1.1806 1.2426 1.2344 1.1850 1.1947 1.2414 1.2400 (R42 / D42) / (R51 / D51) -1.1197 -1.1197 -1.2021 -1.1960 -1.1995 -0.9619 -1.1592 -1.1505 F3 / F -2.4624 -2.4624 -2.5693 -2.5899 -9.8374 -9.6238 -2.9664 -2.9626 F23 / F -2.0825 -2.0825 -2.2366 -2.2586 -2.5099 -2.7477 -2.3445 -2.3415 R31 / F -0.9728 -0.9728 -1.0579 -1.0577 -19.0561 -11.7749 -1.0330 -1.0303 d56 / TTL 0.1311 0.1311 0.1585 0.1595 0.1552 0.1805 0.1345 0.1346 F5~7 / F 1.7780 1.7780 1.7242 1.7198 1.6207 1.6379 1.6732 1.6626 d45 / TTL 0.0033 0.0033 0.0067 0.0068 0.0151 0.0155 0.0067 0.0097 D / DST 1.4692 1.4668 1.4985 1.4786 1.5154 1.4983 1.4750 1.4986 R62 / R71 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 |F2| / F3 -23.4452 -23.4452 -85.2071 -73.2864 -3.1037 -3.1224 -7.3530 -7.2638 |SAGF81 / (D81 / 2)| 0.1120 0.1120 0.0891 0.0867 0.0718 0.0684 0.0872 0.0880 |SAGF82( / D82 / 2)| 0.0926 0.0926 0.0693 0.0673 0.0373 0.0365 0.0661 0.0712 R22 / R31 1.2968 1.2968 1.1583 1.1532 1.4784 1.5009 1.2549 1.2543 F5 / F 2.4401 2.4401 2.4576 2.4399 2.3753 2.3838 2.3671 2.3590 F67 / F 5.2842 5.2842 4.8075 4.9018 5.0194 5.0493 4.6128 4.5306 |F8 / F| 24.7933 24.7933 18.6674 17.9712 17.1087 18.1553 19.8996 19.0413 (H / 2) / (F*tan(θ / 2)) 0.6727 0.6723 0.6548 0.6485 0.6341 0.6341 0.6504 0.6456 R11 / F 3.3579 3.3579 4.2968 5.2347 7.7922 7.8709 7.1132 8.0364 R11 / R12 3.9779 3.9779 4.5503 5.3627 7.9434 8.0081 7.2894 8.1398 |F2 / F| 57.7316 57.7316 218.9206 189.8036 9.6960 9.7109 21.8118 21.5195

[0303] Table 36

[0304]

[0305]

[0306] This application also provides an electronic device comprising the optical lens described above and an imaging element that converts the optical image formed by the optical lens into an electrical signal. The electronic device can be a stand-alone electronic device, such as a rangefinder camera, or an imaging module integrated into a rangefinder device. Furthermore, the electronic device can 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 driving assistance system.

[0307] 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 protection 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 concept of this application. 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 first side to the second side, the following are included in sequence: A first lens with negative optical power has a first side surface that is convex and a second side surface that is concave. A second lens with optical power has a first concave side and a second convex side; A third lens with negative optical power has a concave first side and a convex second side. The fourth lens has positive optical power, and its second side surface is convex. The fifth lens with positive optical power has a convex first side surface; The sixth lens, which has optical power, has a convex first side surface; A seventh lens with optical power; and An eighth lens with optical power; The optical lens contains eight lenses with optical power. The sixth lens and the seventh lens have opposite positive and negative optical power properties; The air gap d56 between the fifth lens and the sixth lens on the optical axis and the distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis satisfy: 0.06≤d56 / TTL≤0.5; The focal length F2 of the second lens and the total focal length F of the optical lens satisfy: 4.5≤|F2 / F|; The focal length F8 of the eighth lens satisfies the following condition with the total focal length F of the optical lens: 3≤|F8 / F|.

2. The optical lens according to claim 1, wherein, The distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis satisfies the following condition: TTL / F≤6.

3. The optical lens according to claim 1, wherein, The air gap d45 between the fourth lens and the fifth lens on the optical axis and the distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis satisfy: d45 / TTL≤0.

1.

4. The optical lens according to claim 1, wherein, The focal length F3 of the third lens satisfies the following condition with the total focal length F of the optical lens: -20≤F3 / F.

5. The optical lens according to claim 1, wherein, The distance TTL from the center of the first side of the first lens to the imaging surface of the optical lens on the optical axis, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view FOV of the optical lens satisfy: TTL / H / FOV×1°≤0.

06.

6. The optical lens according to claim 1, wherein, The focal length F4 of the fourth lens satisfies the following condition with respect to the total focal length F of the optical lens: F4 / F≤3.

6.

7. The optical lens according to claim 1, wherein, The focal length F5 of the fifth lens satisfies the following condition with the total focal length F of the optical lens: F5 / F≤5.

8. The optical lens according to claim 1, wherein, The combined focal length F67 of the sixth lens and the seventh lens satisfies the following condition with the overall focal length F of the optical lens: 0 <F67 / F≤10。 9. The optical lens according to claim 1, wherein, The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian value θ corresponding to the maximum field of view of the optical lens satisfy: 0.35≤(H / 2) / (F*tan(θ / 2))≤0.

95.

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

Images