Optical lenses and electronic equipment

Abstract

The present application discloses an optical lens and an electronic device including the optical lens. The optical lens includes, in order from the first side to the second side along the optical axis: a first lens having negative optical power, whose first side surface is convex and whose second side surface is concave; a second lens having negative optical power, whose first side surface is concave and whose second side surface is convex; a third lens having positive optical power, whose first side surface is convex and whose second side surface is convex; a fourth lens; a fifth lens; and a sixth lens.

Description

Technical Field

[0001] The present application relates to the field of optical elements, and more specifically, to an optical lens and electronic equipment. Background Art

[0002] With the rapid development of the automotive industry, automotive cameras, as the "eyes" of the car, are playing an increasingly important role in the automotive accessories market. Currently, new in-vehicle interior view cameras are expanding their capabilities to include cabin monitoring, such as monitoring packages and unattended children, and enabling video calls to meet passenger needs. To meet the functional requirements of in-vehicle interior view cameras, they must provide both color (RGB) and infrared (IR) capabilities. On the one hand, the lens can receive visible light (RGB) during the day to meet the needs of visual video calls. On the other hand, it can receive infrared light at night to enable monitoring in low-light conditions. In other words, a single lens must integrate the combined functions of two conventional color imaging lenses and a nighttime monitoring lens.

[0003] However, when using a single lens to achieve these functions, the significantly expanded operating wavelength range results in reduced image clarity. Maintaining a consistent focal plane across this broad operating band also hinders miniaturization of the internal vision lens due to technical and processing limitations. This makes it difficult to meet the tight installation requirements. Furthermore, current internal vision lenses cannot achieve the same resolution as at room temperature when exposed to significant temperature fluctuations. Furthermore, to meet cabin and passenger monitoring requirements, higher field of view requirements are also required.

[0004] Therefore, the market is in urgent need of an optical lens that can solve the above technical problems. Summary of the Invention

[0005] In one aspect, the present application provides an optical lens. The optical lens comprises, in order from a first side to a second side along an optical axis: a first lens having negative optical power, whose first side surface is convex and whose second side surface is concave; a second lens having negative optical power, whose first side surface is concave and whose second side surface is convex; a third lens having positive optical power, whose first side surface is convex and whose second side surface is convex; a fourth lens; a fifth lens; and a sixth lens.

[0006] In some embodiments, the fourth lens has negative optical power, its first side surface is convex, and its second side surface is concave; and the fifth lens has positive optical power, its first side surface is convex, and its second side surface is convex.

[0007] In some embodiments, the sixth lens has negative optical power, and its first side surface is convex and its second side surface is concave.

[0008] In some embodiments, the fourth lens has positive optical power, a first side surface thereof is convex, and a second side surface thereof is convex; and

[0009] In some embodiments, the fifth lens has negative optical power.

[0010] In some embodiments, the first side surface of the fifth lens is concave, and the second side surface is concave.

[0011] In some embodiments, the first side surface of the fifth lens is concave, and the second side surface is convex.

[0012] In some embodiments, the sixth lens has positive optical power, and its first side surface is convex, and its second side surface is convex.

[0013] In some embodiments, the sixth lens has positive optical power, a first side surface thereof is convex, and a second side surface thereof is concave.

[0014] In some embodiments, the fourth lens and the fifth lens form a cemented lens.

[0015] In some embodiments, the maximum field of view FOV of the optical lens, the total length TTL of the optical lens, and the image height H corresponding to the maximum field of view satisfy: TTL / H / FOV≤0.04.

[0016] In some embodiments, the maximum field of view FOV of the optical lens, the total length TTL of the optical lens, and the image height H corresponding to the maximum field of view satisfy: TTL / H / tan(FOV)≤2.5.

[0017] In some embodiments, a central curvature radius R1 of the first side surface of the first lens and a central curvature radius R2 of the second side surface of the first lens satisfy: 2≤R1 / R2≤5.

[0018] In some embodiments, the maximum field of view FOV of the optical lens, the maximum clear aperture D of the first lens corresponding to the maximum field of view, and the image height H corresponding to the maximum field of view satisfy: D / H / FOV≤0.02.

[0019] In some embodiments, the maximum field of view FOV of the optical lens, the maximum clear aperture D of the first lens corresponding to the maximum field of view, and the image height H corresponding to the maximum field of view satisfy: D / H / tan(FOV)≤1.2.

[0020] In some embodiments, the back focal length BFL of the optical lens and the total length TTL of the optical lens satisfy: BFL / TTL≥0.1.

[0021] In some embodiments, the effective focal length F4 of the fourth lens and the effective focal length F5 of the fifth lens satisfy: |F4 / F5|≤2.

[0022] In some embodiments, the maximum field of view FOV of the optical lens, the total effective focal length F of the optical lens, and the image height H corresponding to the maximum field of view satisfy: (FOV×F) / H≥40.

[0023] In some embodiments, a central curvature radius R8 of the first side surface of the fourth lens and a central curvature radius R9 of the second side surface of the fourth lens satisfy: |R8 / R9|≥1.8.

[0024] In some embodiments, the optical lens further includes an aperture disposed between the second lens and the third lens, wherein a spacing distance d4 between the second lens and the aperture on the optical axis and a total length TTL of the optical lens satisfy: d4 / TTL≤0.1.

[0025] In some embodiments, the second side surface of the fourth lens and the first side surface of the fifth lens form a cemented surface, wherein an angle |arctan(1 / K(L1S9)| corresponding to the cemented surface and the maximum field angle of the optical lens satisfies: |arctan(1 / K(L1S9)|≥42.

[0026] In some embodiments, the total length TTL of the optical lens and the total effective focal length F of the optical lens satisfy: TTL / F≤7.

[0027] In some embodiments, the total effective focal length F of the optical lens, the central curvature radius R3 of the first side surface of the second lens, and the central curvature radius R4 of the second side surface of the second lens satisfy: |F / R3|+|F / R4|≤2.5.

[0028] In some embodiments, the distance d7 between the third lens and the fourth lens on the optical axis and the back focal length BFL of the optical lens satisfy: (d7×BFL) / (d7+BFL)≤0.7.

[0029] In some embodiments, a central curvature radius R11 of the first side surface of the sixth lens and a central curvature radius R12 of the second side surface of the sixth lens satisfy: -3≤(R11-R12) / (R11+R12)≤0.5.

[0030] In some embodiments, a central curvature radius R1 of the first side surface of the first lens, a central curvature radius R2 of the second side surface of the first lens, and a separation distance d2 between the first lens and the second lens on the optical axis satisfy: 0.8≤R1 / (R2+d2)≤2.2.

[0031] In some embodiments, the effective focal length F2 of the second lens and the total effective focal length F of the optical lens satisfy: |F2 / F|≥4.

[0032] In some embodiments, the effective focal length F6 of the sixth lens and the total effective focal length F of the optical lens satisfy: |F6 / F|≥2.

[0033] In some embodiments, the Abbe number Vd1 of the first lens satisfies: Vd1 ≥ 38.

[0034] In some embodiments, the refractive index Nd3 of the third lens satisfies: Nd3 ≥ 1.7.

[0035] In some embodiments, the total length TTL of the optical lens, the image height H corresponding to the maximum field angle of the optical lens, and the maximum field angle θ of the optical lens expressed in radians satisfy: TTL / H / θ≤2.5.

[0036] In some embodiments, the maximum clear aperture D of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view angle θ of the optical lens expressed in radians satisfy: D / H / θ≤1.2.

[0037] In some embodiments, the effective focal length F1 of the first lens and the center thickness d1 of the first lens on the optical axis satisfy: -11≤F1 / d1≤-5.

[0038] In some embodiments, the second side surface of the fourth lens and the first side surface of the fifth lens form a cemented surface, wherein a central curvature radius R of the cemented surface and an effective aperture Φ of the cemented surface satisfy: 0.6≤|R| / (Φ / 2)≤1.5.

[0039] In some embodiments, the effective focal length F2 of the second lens and the central curvature radius R4 of the second side surface of the second lens satisfy: 5.5≤F2 / R4≤82.

[0040] In some embodiments, the effective focal length F4 of the fourth lens, the effective focal length F5 of the fifth lens, and the total effective focal length F of the optical lens satisfy: -5.5≤F4×F5 / F≤-1.

[0041] The present application also provides an optical lens. The optical lens includes: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, in order from a first side to a second side along an optical axis, wherein the first lens and the second lens have negative optical power; the third lens has positive optical power; and the maximum aperture D of the first lens corresponding to the maximum field of view of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the maximum field of view angle θ of the optical lens expressed in radians satisfy the following: D / H / θ≤1.2.

[0042] In some embodiments, the first side surface of the first lens is convex, and the second side surface is concave.

[0043] In some embodiments, the first side surface of the second lens is concave, and the second side surface is convex.

[0044] In some embodiments, the first side surface of the third lens is convex, and the second side surface is convex.

[0045] In some embodiments, the fourth lens has negative optical power, its first side surface is convex, and its second side surface is concave; and the fifth lens has positive optical power, its first side surface is convex, and its second side surface is convex.

[0046] In some embodiments, the sixth lens has negative optical power, and its first side surface is convex and its second side surface is concave.

[0047] In some embodiments, the fourth lens has positive optical power, a first side surface thereof is convex, and a second side surface thereof is convex; and

[0048] In some embodiments, the fifth lens has negative optical power.

[0049] In some embodiments, the first side surface of the fifth lens is concave, and the second side surface is concave.

[0050] In some embodiments, the first side surface of the fifth lens is concave, and the second side surface is convex.

[0051] In some embodiments, the sixth lens has positive optical power, and its first side surface is convex, and its second side surface is convex.

[0052] In some embodiments, the sixth lens has positive optical power, a first side surface thereof is convex, and a second side surface thereof is concave.

[0053] In some embodiments, the fourth lens and the fifth lens form a cemented lens.

[0054] In some embodiments, the maximum field of view FOV of the optical lens, the total length TTL of the optical lens, and the image height H corresponding to the maximum field of view satisfy: TTL / H / FOV≤0.04.

[0055] In some embodiments, the maximum field of view FOV of the optical lens, the total length TTL of the optical lens, and the image height H corresponding to the maximum field of view satisfy: TTL / H / tan(FOV)≤2.5.

[0056] In some embodiments, a central curvature radius R1 of the first side surface of the first lens and a central curvature radius R2 of the second side surface of the first lens satisfy: 2≤R1 / R2≤5.

[0057] In some embodiments, the maximum field of view FOV of the optical lens, the maximum clear aperture D of the first lens corresponding to the maximum field of view, and the image height H corresponding to the maximum field of view satisfy: D / H / FOV≤0.02.

[0058] In some embodiments, the maximum field of view FOV of the optical lens, the maximum clear aperture D of the first lens corresponding to the maximum field of view, and the image height H corresponding to the maximum field of view satisfy: D / H / tan(FOV)≤1.2.

[0059] In some embodiments, the back focal length BFL of the optical lens and the total length TTL of the optical lens satisfy: BFL / TTL≥0.1.

[0060] In some embodiments, the effective focal length F4 of the fourth lens and the effective focal length F5 of the fifth lens satisfy: |F4 / F5|≤2.

[0061] In some embodiments, the maximum field of view FOV of the optical lens, the total effective focal length F of the optical lens, and the image height H corresponding to the maximum field of view satisfy: (FOV×F) / H≥40.

[0062] In some embodiments, a central curvature radius R8 of the first side surface of the fourth lens and a central curvature radius R9 of the second side surface of the fourth lens satisfy: |R8 / R9|≥1.8.

[0063] In some embodiments, the optical lens further includes an aperture disposed between the second lens and the third lens, wherein a spacing distance d4 between the second lens and the aperture on the optical axis and a total length TTL of the optical lens satisfy: d4 / TTL≤0.1.

[0064] In some embodiments, the second side surface of the fourth lens and the first side surface of the fifth lens form a cemented surface, wherein an angle |arctan(1 / K(L1S9)| corresponding to the cemented surface and the maximum field angle of the optical lens satisfies: |arctan(1 / K(L1S9)|≥42.

[0065] In some embodiments, the total length TTL of the optical lens and the total effective focal length F of the optical lens satisfy: TTL / F≤7.

[0066] In some embodiments, the total effective focal length F of the optical lens, the central curvature radius R3 of the first side surface of the second lens, and the central curvature radius R4 of the second side surface of the second lens satisfy: |F / R3|+|F / R4|≤2.5.

[0067] In some embodiments, the distance d7 between the third lens and the fourth lens on the optical axis and the back focal length BFL of the optical lens satisfy: (d7×BFL) / (d7+BFL)≤0.7.

[0068] In some embodiments, a central curvature radius R11 of the first side surface of the sixth lens and a central curvature radius R12 of the second side surface of the sixth lens satisfy: -3≤(R11-R12) / (R11+R12)≤0.5.

[0069] In some embodiments, a central curvature radius R1 of the first side surface of the first lens, a central curvature radius R2 of the second side surface of the first lens, and a separation distance d2 between the first lens and the second lens on the optical axis satisfy: 0.8≤R1 / (R2+d2)≤2.2.

[0070] In some embodiments, the effective focal length F2 of the second lens and the total effective focal length F of the optical lens satisfy: |F2 / F|≥4.

[0071] In some embodiments, the effective focal length F6 of the sixth lens and the total effective focal length F of the optical lens satisfy: |F6 / F|≥2.

[0072] In some embodiments, the Abbe number Vd1 of the first lens satisfies: Vd1 ≥ 38.

[0073] In some embodiments, the refractive index Nd3 of the third lens satisfies: Nd3 ≥ 1.7.

[0074] In some embodiments, the total length TTL of the optical lens, the image height H corresponding to the maximum field angle of the optical lens, and the maximum field angle θ of the optical lens expressed in radians satisfy: TTL / H / θ≤2.5.

[0075] In some embodiments, the effective focal length F1 of the first lens and the center thickness d1 of the first lens on the optical axis satisfy: -11≤F1 / d1≤-5.

[0076] In some embodiments, the second side surface of the fourth lens and the first side surface of the fifth lens form a cemented surface, wherein a central curvature radius R of the cemented surface and an effective aperture Φ of the cemented surface satisfy: 0.6≤|R| / (Φ / 2)≤1.5.

[0077] In some embodiments, the effective focal length F2 of the second lens and the central curvature radius R4 of the second side surface of the second lens satisfy: 5.5≤F2 / R4≤82.

[0078] In some embodiments, the effective focal length F4 of the fourth lens, the effective focal length F5 of the fifth lens, and the total effective focal length F of the optical lens satisfy: -5.5≤F4×F5 / F≤-1.

[0079] On the other hand, the present application also provides an electronic device, including the optical lens provided according to the present application and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

[0080] This application uses six lenses, and by optimizing the shape, optical focal length, etc. of each lens, the optical lens has at least one beneficial effect of good imaging quality in a wide band, miniaturization, a large field of view, and good temperature performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0081] Other features, purposes and advantages of the present application will become more apparent through the following detailed description of non-limiting embodiments in conjunction with the accompanying drawings. In the accompanying drawings:

[0082] Figure 1 Schematic diagram showing the structure of an optical lens according to Example 1 of the present application;

[0083] Figure 2 Schematic diagram showing the structure of an optical lens according to Example 2 of the present application;

[0084] Figure 3 Schematic diagram showing the structure of an optical lens according to Example 3 of the present application;

[0085] Figure 4 Schematic diagram showing the structure of an optical lens according to Example 4 of the present application;

[0086] Figure 5 Schematic diagram showing the structure of an optical lens according to Example 5 of the present application;

[0087] Figure 6 Schematic diagram showing the structure of an optical lens according to Example 6 of the present application;

[0088] Figure 7 A schematic structural diagram of an optical lens according to Example 7 of the present application is shown; and

[0089] Figure 8 Schematic diagram showing the structure of an optical lens according to Example 8 of the present application. DETAILED DESCRIPTION

[0090] To facilitate understanding of the present application, a more comprehensive description of the present application will be provided below with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely descriptions of exemplary embodiments of the present application and are not intended to limit the scope of the present 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.

[0091] It should be noted that in this specification, the terms "first," "second," "third," etc., are used solely to distinguish one feature from another and do not limit the features. Thus, the first lens discussed below could also be referred to as the second lens or the third lens without departing from the teachings of this application.

[0092] In the drawings, the thickness, size, and shape of the lenses are slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical and aspherical surfaces shown in the drawings are provided by way of example. That is, the shapes of the spherical and aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustration only and are not drawn strictly to scale.

[0093] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the first side is called the first side surface of the lens, the surface of each lens closest to the second side is called the second side surface of the lens, and the surface of the optical lens closest to the second side is called the second side surface of the optical lens. For example, the first side may be the object side, and the second side may be the image side; or, the first side may be the imaging side, and the second side may be the image source side.

[0094] It should also be understood that the terms "comprises," "including," "having," "includes," and / or "comprising," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present application, "may" is used to mean "one or more embodiments of the present application." And, the term "exemplary" is intended to refer to an example or illustration.

[0095] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art to which this application belongs. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and will not be interpreted in an idealized or overly formal sense unless expressly defined as such herein.

[0096] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0097] The features, principles and other aspects of the present application are described in detail below.

[0098] In an exemplary embodiment, the optical lens includes, for example, six lenses having optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, which are sequentially arranged along the optical axis from the first side to the second side.

[0099] In exemplary embodiments, the optical lens provided herein can be used, for example, as an in-vehicle interior view lens. In this case, the first side of the optical lens can be the object side, and the second side can be the image side. Light from the object side can form an image on the image side, and the second side of the optical lens can be the imaging surface of the optical lens.

[0100] In exemplary embodiments, the optical lens provided herein can be used, for example, as a projection lens or a laser radar transmitter lens. In this case, the second side of the optical lens can be the image source side, and the first side can be the imaging side. Light from the image source side can be imaged on the imaging side. The second side surface of the optical lens can be the image source surface of the optical lens.

[0101] In an exemplary embodiment, the optical lens may further include a photosensitive element disposed on the second side surface. Optionally, the photosensitive element disposed on the second side surface may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS).

[0102] In an exemplary embodiment, the first lens may have a negative optical focal length and may have a convex-concave surface. The first side of the first lens is a convex surface, which is beneficial to reducing the incident angle of the incident light on the impact surface, realizing large-angle light collection, and allowing the peripheral field of view light to smoothly enter the rear optical element to increase the field of view angle. The second side of the first lens is a concave surface, which is beneficial to the divergent transition of light to the rear optical element. In addition, when the material of the first lens is a high Abbe number material, it is beneficial to correct the aberration of the entire band, such as the infrared band, and is beneficial to the resolution and confocality of the infrared band. Furthermore, by reasonably limiting the numerical range of the Abbe number of the first lens, it is beneficial to increase the collection of light and reduce the effective aperture of the front end.

[0103] In an exemplary embodiment, the second lens may have negative optical power and a concave-convex surface profile. This optical power and surface profile of the second lens facilitates the transition and adjustment of deflected light from the first lens, reduces the effective height of the overall light, and reduces the front port diameter. When the second lens adopts a lens shape that approximates concentric circles, it helps reduce the optical path difference between the center and periphery of the lens, thereby correcting optical lens distortion. Furthermore, by reasonably limiting the optical power of the second lens (e.g., a larger optical power), the impact of the second lens on back focus shift under high and low temperature conditions can be reduced, thereby improving the temperature performance of the optical lens.

[0104] In an exemplary embodiment, the third lens element may have positive optical power and a biconvex surface. This optical power and surface configuration of the third lens element facilitates light convergence and compresses the angle of incident light, achieving a smooth transition of light. It also helps reduce the diameter of the rear port of the optical lens. When the third lens element is made of a high-refractive-index material, it can quickly converge light and reduce light divergence. Furthermore, by appropriately limiting the Abbe number of the third lens element, chromatic aberration can be balanced and image quality improved.

[0105] In an exemplary embodiment, the fourth lens may have a negative optical focal length and may have a convex-concave surface. The fifth lens has a positive optical focal length and has a biconvex surface. The first side surface of the fourth lens is a convex surface, which is beneficial for reducing the height of the light entering the fourth lens. Furthermore, by reasonably increasing the central curvature radius of the first side surface of the fourth lens, it is beneficial to reduce the central optical distance between the fourth lens and the rear optical element, which is beneficial for reducing ghost images caused by the convergence of reflected energy. In addition, the fourth lens has a negative optical focal length and the fifth lens has a positive optical focal length, which is beneficial for maintaining the stability of imaging under high and low temperature conditions. At the same time, the first side surface of the fifth lens is a convex surface, which can make the divergent light passing through the fourth lens with a negative optical focal length smoothly enter the rear lens and improve the resolution ability. Furthermore, by limiting the fourth lens and the fifth lens to have similar effective focal lengths, it is beneficial to further meet the requirements of maintaining the stability of imaging under high and low temperature conditions.

[0106] In an exemplary embodiment, the fourth lens may have positive optical power and may have a biconvex surface. The fifth lens may have negative optical power and may have a concave-convex surface or a biconcave surface. The first side surface of the fourth lens is a convex surface, which is beneficial for reducing the height of the light entering the fourth lens. The fifth lens has negative optical power, which can make the light converged by the fourth lens with positive optical power transition smoothly to the rear lens, which is beneficial for improving the resolution ability. Furthermore, by limiting the fourth lens and the fifth lens to have similar effective focal length values, it is beneficial to maintain the stability of imaging under high and low temperature conditions. In addition, the fifth lens has negative optical power and can also collect light passing through the fourth lens, so that the light trend transitions smoothly.

[0107] In an exemplary embodiment, the sixth lens may have positive or negative optical power. The sixth lens has a convex-concave surface, which is conducive to effectively transitioning the front light and increasing the distribution of the central optical power of the sixth lens, thereby reducing the impact of high and low temperature changes on the back focus offset of the sixth lens, and improving the temperature performance of the optical lens. Among them, the second side of the sixth lens is concave, which is conducive to increasing the exit angle of the rear peripheral light, thereby obtaining a larger imaging surface size. At the same time, it is also conducive to reducing the back focus distance, shortening the overall length of the optical lens, and facilitating miniaturization. The sixth lens also has a biconvex surface, wherein the second side of the sixth lens is convex, which is conducive to the smooth incidence of large-angle light on the imaging surface to meet the need for improved illumination.

[0108] In an exemplary embodiment, an aperture for converging light may be provided between the second lens and the third lens to further improve the imaging quality of the optical lens. Placing the aperture between the second and third lenses helps to effectively converge the light entering the optical lens, reducing the aperture of the front lens element of the optical lens and lowering the assembly sensitivity of the optical lens. Furthermore, since the light passing through the first and second lenses is divergent transitional light, locating the aperture between the second and third lenses also helps the optical lens have a large aperture. In the embodiment of the present application, the aperture may be provided near the second side surface of the second lens or near the first side surface of the third lens. However, it should be noted that the positions of the apertures disclosed herein are merely examples and not limitations. In alternative embodiments, the aperture may also be provided at other locations according to actual needs. For example, it may be provided at any position between the third lens and the imaging plane. This arrangement helps to reduce the rear port diameter and reduce the introduction of peripheral aberration light into the rear optical elements, thereby improving resolution.

[0109] In an exemplary embodiment, the fourth and fifth lenses form a cemented lens. This arrangement helps shorten the overall length of the optical lens, thereby facilitating miniaturization. Furthermore, light passing through the cemented lens is not significantly deflected, effectively transferring forward light and reducing lens sensitivity. By using a fourth and fifth lens with different Abbe numbers to form a cemented lens, the overall aberration correction of the optical lens is improved, thereby enhancing imaging quality. Furthermore, the similar focal lengths of the fourth and fifth lenses effectively enhance thermal compensation in the optical lens. In addition, the cemented lens has the following beneficial effects: it can fully correct various aberrations of the optical lens, and under the premise of a compact structure of the optical lens, it can improve the resolution, optimize the distortion, CRA and other optical properties; the lens with negative optical focal length in the cemented lens has a higher refractive index relative to the lens with positive optical focal length, so that the light can be effectively and smoothly converged, so that the light can smoothly reach the imaging surface, reducing the overall weight and cost of the optical lens; it can reduce the light loss caused by reflection between lenses, and when the two lenses have high and low refractive indices, it is conducive to the rapid transition of the front light, and by increasing the aperture, it can increase the amount of light transmitted, which is helpful for night vision needs; it can reduce the air gap between the two lenses, so that the overall structure of the optical lens is compact, while reducing the tolerance sensitivity problems such as overall eccentricity generated by the lenses during the assembly process.

[0110] In an exemplary embodiment, the optical lens according to the present application may satisfy the following conditions: TTL / H / FOV ≤ 0.04. Here, TTL is the total 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. The optical lens meeting the conditions of TTL / H / FOV ≤ 0.04 helps effectively limit the total length of the optical lens while maintaining the same imaging plane and image height, thereby facilitating miniaturization of the optical lens. More specifically, TTL, H, and FOV may further satisfy the conditions of TTL / H / FOV ≤ 0.03.

[0111] In an exemplary embodiment, the optical lens according to the present application may satisfy the following conditions: TTL / H / tan(FOV)≤2.5. Wherein, TTL is the total 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. The optical lens satisfies TTL / H / tan(FOV)≤2.5, which helps to effectively limit the total length of the optical lens under the same imaging plane and the same image height, and is conducive to the miniaturization of the optical lens. More specifically, TTL, H, and FOV may further satisfy the following conditions: TTL / H / tan(FOV)≤2.

[0112] In an exemplary embodiment, the optical lens according to the present application may satisfy the following conditions: 2≤R1 / R2≤5. Here, R1 is the central curvature radius of the first side surface of the first lens, and R2 is the central curvature radius R2 of the second side surface of the first lens. The optical lens satisfies 2≤R1 / R2≤5, which can reasonably control the lens shape of the first lens and can collect large-angle light to enter the rear optical element. This is also beneficial for reducing the front port diameter and volume of the optical lens, improving the resolution capability, and achieving miniaturization of the optical lens. More specifically, R1 and R2 may further satisfy the following conditions: 2.1≤R1 / R2≤4.2.

[0113] In an exemplary embodiment, the optical lens according to the present application may satisfy the following conditions: D / H / FOV ≤ 0.02. Here, D is the maximum aperture of the first lens corresponding to the maximum field of view of the optical lens, H is the image height H corresponding to the maximum field of view of the optical lens, and FOV is the maximum field of view of the optical lens. When the optical lens satisfies D / H / FOV ≤ 0.02, it is advantageous to reduce the front diameter of the optical lens and achieve miniaturization of the optical lens. More specifically, D, H, and FOV may further satisfy the following conditions: D / H / FOV ≤ 0.015.

[0114] In an exemplary embodiment, the optical lens according to the present application may satisfy the following conditions: D / H / tan(FOV) ≤ 1.2. Here, D is the maximum aperture of the first lens corresponding to the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, and FOV is the maximum field of view of the optical lens. When the optical lens satisfies D / H / tan(FOV) ≤ 1.2, it is beneficial to reduce the front diameter of the optical lens and achieve miniaturization of the optical lens. More specifically, D, H, and FOV may further satisfy the following conditions: D / H / tan(FOV) ≤ 0.9.

[0115] In an exemplary embodiment, the optical lens according to the present application may satisfy the following conditions: BFL / TTL ≥ 0.1. Here, BFL is the back focal length of the optical lens, and TTL is the total length of the optical lens. This allows the optical lens to have a long back focal length while miniaturizing the optical lens. This also helps reduce the energy of ghost images generated by reflections from the optical lens and the center of the filter. Furthermore, this facilitates assembly with a photosensitive element. More specifically, BFL and TTL may further satisfy the following conditions: BFL / TTL ≥ 0.15.

[0116] In an exemplary embodiment, the optical lens according to the present application may satisfy the following relationship: |F4 / F5|≤2. Here, F4 is the effective focal length of the fourth lens element, and F5 is the effective focal length of the fifth lens element. This relationship allows the focal lengths of the fourth and fifth lenses to be close, facilitating a smooth transition of light, correcting chromatic aberration, improving imaging quality, and enhancing thermal compensation in the optical lens. More specifically, F4 and F5 may further satisfy the following relationship: |F4 / F5|≤1.5.

[0117] In an exemplary embodiment, the optical lens according to the present application may satisfy the following conditions: (FOV × F) / H ≥ 40, where FOV is the maximum field of view of the optical lens, F is the total effective focal length of the optical lens, and H is the image height corresponding to the maximum field of view of the optical lens. This FOV × F) / H ≥ 40 allows the optical lens to achieve both a long focal length and a wide field of view. More specifically, FOV, F, and H may further satisfy the following conditions: (FOV × F) / H ≥ 45.

[0118] In an exemplary embodiment, the optical lens according to the present application may satisfy the following condition: |R8 / R9| ≥ 1.8. Here, R8 is the central radius of curvature of the first side surface of the fourth lens, and R9 is the central radius of curvature of the second side surface of the fourth lens. The optical lens satisfies |R8 / R9| ≥ 1.8, and through a reasonable configuration with the fifth lens, it can compress the light collected by the fourth lens. This results in a relatively smooth light path, allowing the light to smoothly transition to the rear element. This also effectively reduces aberrations in the optical lens, improving image quality. If the value of the above conditional expression is less than the minimum, the angle of incidence of the light incident on the first side surface of the fifth lens will increase, resulting in a decrease in relative illumination. Therefore, by satisfying the above conditional expression, a high-quality, bright image can be obtained. Furthermore, the central radius of curvature of the first side surface of the fourth lens should be as smooth as possible. This helps reduce the central optical path between the fourth lens and the rear optical element, thereby reducing ghost images caused by the convergence of reflected energy. More specifically, R8 and R9 can further satisfy the following condition: |R8 / R9| ≥ 2.

[0119] In an exemplary embodiment, the optical lens according to the present application may satisfy the following relationship: d4 / TTL ≤ 0.1. Here, d4 is the distance between the second lens element and the aperture on the optical axis, and TTL is the total length of the optical lens. This d4 / TTL ≤ 0.1 relationship allows for a smaller distance between the second lens element and the aperture, resulting in a smoother light transition near the aperture, which improves imaging quality. More specifically, d4 and TTL may further satisfy the following relationship: d4 / TTL ≤ 0.08.

[0120] In an exemplary embodiment, the optical lens according to the present application may satisfy the following: |arctan(1 / K(L1S9)|≥42. Wherein, |arctan(1 / K(L1S9)| is the aperture angle corresponding to the maximum field angle between the cemented surface formed by the second side surface of the fourth lens and the first side surface of the fifth lens. The optical lens satisfies |arctan(1 / K(L1S9)|≥42, which can make the aperture angle of the cemented surface larger, which is conducive to the rapid focusing of the light passing through the fourth lens and the improvement of imaging quality. More specifically, |arctan(1 / K(L1S9)| can further satisfy the following: |arctan(1 / K(L1S9)|≥43.

[0121] In an exemplary embodiment, the optical lens according to the present application may satisfy the following relationship: TTL / F ≤ 7. Here, TTL is the total length of the optical lens, and F is the total effective focal length of the optical lens. This relationship effectively limits the total length of the optical lens, facilitating miniaturization of the optical lens. More specifically, TTL and F may further satisfy the following relationship: TTL / F ≤ 6.5.

[0122] In an exemplary embodiment, the optical lens according to the present application may satisfy the following: |F / R3|+|F / R4|≤2.5. Wherein, F is the total effective focal length of the optical lens, R3 is the central radius of curvature of the first side surface of the second lens, and R4 is the central radius of curvature of the second side surface of the second lens. The optical lens satisfies |F / R3|+|F / R4|≤2.5, which can effectively control the surface curvature of the second lens, assist incident light in entering the optical lens, and effectively correct astigmatism to improve imaging quality. More specifically, F, R3, and R4 may further satisfy the following: |F / R3|+|F / R4|≤2.2.

[0123] In an exemplary embodiment, the optical lens according to the present application may satisfy: (d7×BFL) / (d7+BFL)≤0.7. Wherein, d7 is the distance between the third lens and the fourth lens on the optical axis, and BFL is the back focal length of the optical lens. The optical lens satisfies (d7×BFL) / (d7+BFL)≤0.7, which helps to balance the ratio of the back focal length to the distance between the third lens and the fourth lens, which is beneficial to improving the assembly yield, and at the same time helps to enable the optical lens to have sufficient back focal length to place other optical elements to increase design flexibility. More specifically, d7 and BFL may further satisfy: (d7×BFL) / (d7+BFL)≤0.55.

[0124] In an exemplary embodiment, the optical lens according to the present application may satisfy: -3≤(R11-R12) / (R11+R12)≤0.5. Wherein, R11 is the central curvature radius of the first side surface of the sixth lens, and R12 is the central curvature radius of the second side surface of the sixth lens. The optical lens satisfies -3≤(R11-R12) / (R11+R12)≤0.5, which can make the central curvature radius of the first side surface and the second side surface of the sixth lens close, so that the light passing through the sixth lens has a smooth trend. At the same time, it is beneficial to correct the aberration of the optical lens, thereby reducing the tolerance sensitivity of the optical lens. More specifically, R11 and R12 can further satisfy: -2.5≤(R11-R12) / (R11+R12)≤0.3.

[0125] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.8≤R1 / (R2+d2)≤2.2. Wherein, R1 is the central curvature radius of the first side of the first lens, R2 is the central curvature radius of the second side of the first lens, and d2 is the distance between the first lens and the second lens on the optical axis. The optical lens satisfies 0.8≤R1 / (R2+d2)≤2.2, which can make the first lens have a special lens shape, so that the peripheral light and the central light of the first lens have an optical path difference, so that the divergent central light enters the rear optical system. At the same time, it is beneficial to reduce the front port diameter and volume of the optical lens, which is beneficial to miniaturization of the optical lens and reduce costs. More specifically, R1, R2 and d2 can further satisfy: 1≤R1 / (R2+d2)≤2.

[0126] In an exemplary embodiment, the optical lens according to the present application may satisfy the following relationship: |F2 / F| ≥ 4. Here, F2 is the effective focal length of the second lens element, and F is the total effective focal length of the optical lens. This relationship facilitates thermal compensation, thereby enhancing the optical lens's thermal performance. More specifically, F2 and F may further satisfy the following relationship: |F2 / F| ≥ 5.

[0127] In an exemplary embodiment, the optical lens according to the present application may satisfy the following relationship: |F6 / F| ≥ 2. Here, F6 is the effective focal length of the sixth lens element, and F is the total effective focal length of the optical lens. This relationship facilitates thermal compensation, thereby enhancing the optical lens's thermal performance. More specifically, F6 and F may further satisfy the following relationship: |F6 / F| ≥ 3.

[0128] In an exemplary embodiment, the optical lens according to the present application may satisfy the following condition: Vd1 ≥ 38. Vd1 is the Abbe number of the first lens element. This condition can improve infrared imaging quality while balancing visible and infrared resolution. More specifically, Vd1 can further satisfy the following condition: Vd1 ≥ 40.

[0129] In an exemplary embodiment, the optical lens according to the present application may satisfy the following condition: Nd3 ≥ 1.7. Nd3 is the refractive index of the third lens element. This condition improves imaging quality and enables the optical lens to achieve high resolution in both visible and infrared light. More specifically, Nd3 may further satisfy the following condition: Nd3 ≥ 1.75.

[0130] In an exemplary embodiment, the optical lens according to the present application may satisfy the following relationship: TTL / H / θ ≤ 2.5. Here, TTL is the total length of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, and θ is the maximum field of view of the optical lens expressed in radians. This relationship helps effectively limit the total length of the optical lens while maintaining the same imaging plane and image height, facilitating miniaturization of the optical lens. More specifically, TTL, H, and θ may further satisfy the following relationship: TTL / H / θ ≤ 2.

[0131] In an exemplary embodiment, the optical lens according to the present application may satisfy the following relationship: D / H / θ ≤ 1.2. Here, D is the maximum aperture of the first lens corresponding to the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, and θ is the maximum field of view of the optical lens expressed in radians. This relationship facilitates reducing the front aperture of the optical lens and achieving miniaturization. More specifically, D, H, and θ may further satisfy the following relationship: D / H / θ ≤ 0.9.

[0132] In an exemplary embodiment, the optical lens according to the present application may satisfy the following conditions: -11 ≤ F1 / d1 ≤ -5. Here, F1 is the effective focal length of the first lens element, and d1 is the center thickness of the first lens element along the optical axis. This condition of -11 ≤ F1 / d1 ≤ -5 allows the optical lens to have a wide field of view, low sensitivity, and be compact. It also allows for better aberration correction and improved imaging quality. More specifically, F1 and d1 may further satisfy the following conditions: -10 ≤ F1 / d1 ≤ -5.1.

[0133] In an exemplary embodiment, the optical lens according to the present application may satisfy the following conditions: 0.6≤|R| / (Φ / 2)≤1.5. Here, R is the central radius of curvature of the bonded surface formed by the second side surface of the fourth lens and the first side surface of the fifth lens, and Φ is the effective aperture of the bonded surface. The optical lens satisfies the following conditions: 0.6≤|R| / (Φ / 2)≤1.5, which can effectively control the resulting higher-order aberrations, thereby improving the light transmission and resolving power of the entire optical lens, and effectively reducing the process requirements for manufacturing the bonded surface. More specifically, R and Φ may further satisfy the following conditions: 0.65≤|R| / (Φ / 2)≤1.4.

[0134] In an exemplary embodiment, the optical lens according to the present application may satisfy the following conditions: 5.5 ≤ F2 / R4 ≤ 82. Here, F2 is the effective focal length of the second lens element, and R4 is the central radius of curvature of the second side surface of the second lens element. This condition ensures minimal distortion and effectively reduces distortion-induced imaging distortion. More specifically, F2 and R4 may further satisfy the following conditions: 5.8 ≤ F2 / R4 ≤ 81.

[0135] In an exemplary embodiment, the optical lens according to the present application may satisfy the following relationship: -5.5 ≤ F4 × F5 / F ≤ -1. Here, F4 is the effective focal length of the fourth lens element, F5 is the effective focal length of the fifth lens element, and F is the total effective focal length of the optical lens. This condition allows for aberration correction between the fourth and fifth lenses, improving imaging resolution. More specifically, F4, F5, and F may further satisfy the following relationship: -5 ≤ F4 × F5 / F ≤ -2.

[0136] In an exemplary embodiment, the optical lens according to the present application may satisfy the following conditions: 1≤Nd2≤1.58, 55.8≤Vd2≤65, 1.4≤Nd5≤1.7, and 1.4≤Nd4≤1.7. Wherein, Nd2 is the refractive index of the second lens element, Vd2 is the Abbe number of the second lens element, Nd5 is the refractive index of the fifth lens element, and Nd4 is the refractive index of the fourth lens element. Satisfying the above conditional expressions for the optical lens can simplify the optical lens structure and ensure good optical performance. More specifically, Nd2, Vd2, Nd5, and Nd4 may further satisfy the following conditions: 1.2≤Nd2≤1.55, 56≤Vd2≤62, 1.5≤Nd5≤1.65, and 1.5≤Nd4≤1.68, respectively.

[0137] In an exemplary embodiment, the first through sixth lenses may be spherical lenses or aspherical lenses. For example, the first lens may be a spherical lens, and the second through sixth lenses may be aspherical lenses. The second and sixth lenses being aspherical lenses facilitate correcting aberrations in the optical lens, improving its resolving power, and facilitating confocal performance when imaging visible and infrared light. This application does not specify the number of spherical and aspherical lenses; when imaging quality is a priority, the number of aspherical lenses may be increased. In particular, to improve the resolving quality of the optical system, the second through sixth lenses may all be aspherical lenses. Aspherical lenses are characterized by a continuously varying curvature from the center to the periphery. Unlike spherical lenses, which have a constant curvature from the center to the periphery, aspherical lenses have a better curvature radius characteristic, improving distortion and astigmatism. Using aspherical lenses minimizes aberrations that occur during imaging, thereby improving the imaging quality of the lens.

[0138] In an exemplary embodiment, the optical lens of the present application may further include a filter and / or protective glass disposed between the sixth lens and the imaging surface as needed to filter light with different wavelengths and prevent damage to the image-side element (e.g., chip) of the optical lens.

[0139] In an exemplary embodiment, the first, second, third, fourth, fifth, and sixth lenses may all be glass lenses. Using glass can prevent blurring of the lens image due to high and low temperature fluctuations in the operating environment, which can affect the normal operation of the lens. Specifically, when resolution quality and reliability are of primary concern, the first through sixth lenses may all be glass aspherical lenses. Of course, in applications where lower temperature stability requirements are required, the first through sixth lenses in the optical lens may all be made of plastic. Using plastic to manufacture optical lenses can effectively reduce production costs. Of course, the first through sixth lenses in the optical lens may also be made of a combination of plastic and glass.

[0140] According to the above-mentioned embodiment of the present application, by reasonably setting the shape and optical focal length of each lens, the optical lens can have at least one beneficial effect of good imaging quality in a small wide band range, miniaturization, a large field of view and good temperature performance when only six lenses are used.

[0141] However, those skilled in the art will appreciate that the number of lenses comprising the lens can be varied to achieve the various results and advantages described herein without departing from the claimed technical solutions. For example, while the embodiments describe an optical lens using six lenses as an example, the optical lens is not limited to six lenses. If desired, the optical lens can also include other numbers of lenses.

[0142] Specific embodiments of the optical lens applicable to the above-mentioned embodiments will be further described below with reference to the accompanying drawings.

[0143] Example 1

[0144] The following reference Figure 1 The optical lens according to Example 1 of the present application is described. Figure 1 A schematic structural diagram of an optical lens according to Example 1 of the present application is shown.

[0145] like Figure 1 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixth lens L6.

[0146] The first lens L1 is a meniscus lens with negative optical power, whose first side surface S1 is convex and whose second side surface S2 is concave. The second lens L2 is a meniscus lens with negative optical power, whose first side surface S3 is concave and whose second side surface S4 is convex. The third lens L3 is a biconvex lens with positive optical power, whose first side surface S6 is convex and whose second side surface S7 is convex. The fourth lens L4 is a meniscus lens with negative optical power, whose first side surface S8 is convex and whose second side surface S9 is concave. The fifth lens L5 is a biconvex lens with positive optical power, whose first side surface S9 is convex and whose second side surface S10 is convex. The sixth lens L6 is a meniscus lens with negative optical power, whose first side surface S11 is convex and whose second side surface S12 is concave.

[0147] The optical lens may further include a stop STO, which may be disposed between the second lens element L2 and the third lens element L3. For example, the stop STO may be disposed near the first side surface S6 of the third lens element L3.

[0148] For example, the optical lens may further include auxiliary lenses L7 and L8 without optical power. Auxiliary lens L7 may have a first side surface S13 and a second side surface S14, and auxiliary lens L8 may have a first side surface S15 and a second side surface S16. Optionally, auxiliary lenses L7 and L8 may be filters or protective glass. Filters may be used to correct color deviation. Protective glass may be used to protect the image sensor chip IMA located at the imaging surface S17.

[0149] The optical lens provided in this application can be used, for example, as an in-vehicle interior view lens. In this case, light from an object sequentially passes through each surface S1 to S16 and is ultimately imaged on an imaging surface S17 disposed on the second side, where an image sensor chip IMA is disposed.

[0150] Table 1 shows the central curvature radius R, thickness / distance d of each lens of the optical lens of Example 1 (it should be understood that the thickness d in the row where S1 is located is the central thickness d1 of the first lens L1, the thickness d in the row where S2 is located is the distance d2 on the optical axis between the second side surface of the first lens L1 and the first side surface of the second lens L2, and so on), refractive index Nd, and Abbe number Vd.

[0151]

[0152]

[0153] Table 1

[0154] In Example 1, the first side surface S3 of the second lens L2 to the second side surface S12 of the sixth lens L6 may all be aspherical surfaces, and the surface shape x of each aspherical lens may be defined by, but not limited to, the following aspherical surface formula:

[0155]

[0156] Where x is the distance from the vertex of the aspheric surface at a height of h along the optical axis; c is the paraxial curvature of the aspheric 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 correction coefficient for the i-th order of the aspheric surface. Table 2 below lists the conic coefficient k and the higher-order coefficients A4, A6, A8, A10, A12, A14, and A16 that can be used for each aspheric mirror surface S3 to S12 in Example 1.

[0157] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -0.7000 -7.4120E-03 3.1023E-04 6.0032E-05 5.0398E-05 9.3513E-06 -2.06E-05 4.33E-06 S4 -33.5638 -5.7378E-02 2.5600E-02 -7.8402E-03 1.0985E-03 1.5277E-04 -8.48E-05 1.05E-05 S6 -0.0130 -1.3007E-02 8.9201E-03 -5.6188E-03 2.6427E-03 -4.8904E-04 -1.1603E-04 4.4598E-05 S7 -0.0239 -2.3931E-02 1.1620E-02 -4.9042E-03 1.3253E-03 -1.6445E-04 -7.6124E-06 2.8107E-06 S8 0.0068 6.7805E-03 1.0471E-03 -7.6157E-04 1.4426E-04 -1.2113E-05 -5.4556E-07 2.0902E-08 S9 -0.0044 -4.3538E-03 1.2065E-02 -3.0803E-03 4.0028E-04 -1.9573E-05 -7.0589E-06 8.1626E-07 S10 0.0205 2.0497E-02 -8.6945E-03 3.8481E-03 -9.3501E-04 9.5042E-05 -8.7158E-08 -3.9010E-07 S11 0.0008 7.7146E-04 -3.7961E-03 1.5557E-03 -2.8417E-04 1.7815E-05 2.5467E-08 7.8405E-09 S12 -0.0007 -6.9568E-04 -2.2503E-03 3.5035E-04 9.3786E-05 -3.9245E-05 4.6834E-06 -1.8644E-07

[0158] Table 2

[0159] Example 2

[0160] The following reference Figure 2 An optical lens according to Example 2 of the present application is described. Figure 2 A schematic structural diagram of an optical lens according to Example 2 of the present application is shown.

[0161] like Figure 2 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixth lens L6.

[0162] The first lens L1 is a meniscus lens with negative optical power, whose first side surface S1 is convex and whose second side surface S2 is concave. The second lens L2 is a meniscus lens with negative optical power, whose first side surface S3 is concave and whose second side surface S4 is convex. The third lens L3 is a biconvex lens with positive optical power, whose first side surface S6 is convex and whose second side surface S7 is convex. The fourth lens L4 is a meniscus lens with negative optical power, whose first side surface S8 is convex and whose second side surface S9 is concave. The fifth lens L5 is a biconvex lens with positive optical power, whose first side surface S9 is convex and whose second side surface S10 is convex. The sixth lens L6 is a meniscus lens with negative optical power, whose first side surface S11 is convex and whose second side surface S12 is concave.

[0163] The optical lens may further include a stop STO, which may be disposed between the second lens element L2 and the third lens element L3. For example, the stop STO may be disposed near the first side surface S6 of the third lens element L3.

[0164] For example, the optical lens may further include auxiliary lenses L7 and L8 without optical power. Auxiliary lens L7 may have a first side surface S13 and a second side surface S14, and auxiliary lens L8 may have a first side surface S15 and a second side surface S16. Optionally, auxiliary lenses L7 and L8 may be filters or protective glass. Filters may be used to correct color deviation. Protective glass may be used to protect the image sensor chip IMA located at the imaging surface S17.

[0165] The optical lens provided in this application can be used, for example, as an in-vehicle interior view lens. In this case, light from an object sequentially passes through each surface S1 to S16 and is ultimately imaged on an imaging surface S17 disposed on the second side, where an image sensor chip IMA is disposed.

[0166] Table 3 shows the central curvature radius R, thickness / distance d, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 2. Table 4 shows the conic coefficient and high-order coefficient of each aspheric mirror surface that can be used in Example 2, wherein the surface shape of each aspheric surface can be defined by formula (1) given in Example 1 above.

[0167]

[0168] Table 3

[0169] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -0.3000 -7.9130E-03 5.6870E-04 1.0265E-04 8.5527E-06 6.2472E-06 -1.61E-05 3.91E-06 S4 -33.2859 -5.7644E-02 2.5509E-02 -7.8444E-03 1.1396E-03 1.4599E-04 -9.30E-05 1.29E-05 S6 -11.7282 -1.3037E-02 8.9330E-03 -5.5453E-03 2.5872E-03 -4.9441E-04 -1.1868E-04 4.8470E-05 S7 -35.1796 -2.3772E-02 1.1608E-02 -4.9807E-03 1.3441E-03 -1.7192E-04 -7.3771E-06 3.2598E-06 S8 -103.9797 7.1934E-03 9.5185E-04 -8.6214E-04 1.4291E-04 -8.6502E-06 1.3850E-07 -9.6603E-08 S9 -1.4849 -2.9360E-03 1.2527E-02 -3.5100E-03 3.5836E-04 -2.6749E-06 -2.6130E-06 -4.9089E-08 S10 -2.9000 2.0898E-02 -8.9826E-03 3.8340E-03 -9.3058E-04 9.4438E-05 -1.4895E-09 -3.7745E-07 S11 -15.1000 1.0676E-03 -3.7336E-03 1.5072E-03 -2.8342E-04 1.7865E-05 5.3896E-08 1.5010E-08 S12 -79.3774 -9.5313E-04 -2.3012E-03 3.6112E-04 9.2758E-05 -3.9385E-05 4.7055E-06 -1.8749E-07

[0170] Table 4

[0171] Example 3

[0172] The following reference Figure 3 An optical lens according to Example 3 of the present application is described. Figure 3A schematic structural diagram of an optical lens according to Example 3 of the present application is shown.

[0173] like Figure 3 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixth lens L6.

[0174] The first lens L1 is a meniscus lens with negative optical power, whose first side surface S1 is convex and whose second side surface S2 is concave. The second lens L2 is a meniscus lens with negative optical power, whose first side surface S3 is concave and whose second side surface S4 is convex. The third lens L3 is a biconvex lens with positive optical power, whose first side surface S6 is convex and whose second side surface S7 is convex. The fourth lens L4 is a meniscus lens with negative optical power, whose first side surface S8 is convex and whose second side surface S9 is concave. The fifth lens L5 is a biconvex lens with positive optical power, whose first side surface S9 is convex and whose second side surface S10 is convex. The sixth lens L6 is a biconvex lens with positive optical power, whose first side surface S11 is convex and whose second side surface S12 is convex.

[0175] The optical lens may further include a stop STO, which may be disposed between the second lens element L2 and the third lens element L3. For example, the stop STO may be disposed near the first side surface S6 of the third lens element L3.

[0176] For example, the optical lens may further include auxiliary lenses L7 and L8 without optical power. Auxiliary lens L7 may have a first side surface S13 and a second side surface S14, and auxiliary lens L8 may have a first side surface S15 and a second side surface S16. Optionally, auxiliary lenses L7 and L8 may be filters or protective glass. Filters may be used to correct color deviation. Protective glass may be used to protect the image sensor chip IMA located at the imaging surface S17.

[0177] The optical lens provided in this application can be used, for example, as an in-vehicle interior view lens. In this case, light from an object sequentially passes through each surface S1 to S16 and is ultimately imaged on an imaging surface S17 disposed on the second side, where an image sensor chip IMA is disposed.

[0178] Table 5 shows the central curvature radius R, thickness / spacing d, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 3. Table 6 shows the conic coefficient and high-order coefficient of each aspheric mirror surface that can be used in Example 3, wherein the surface shape of each aspheric surface can be defined by formula (1) given in Example 1 above.

[0179]

[0180]

[0181] Table 5

[0182] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -1.1627 -3.5451E-03 -2.8020E-04 1.0268E-04 -2.7128E-05 4.1742E-05 -1.13E-05 -7.38E-08 S4 -18.7392 -3.7899E-02 1.7943E-02 -6.0654E-03 8.8703E-04 2.0391E-04 -7.61E-05 3.64E-06 S6 2.5460 -9.3334E-03 5.2659E-03 -4.6021E-03 2.5804E-03 -5.0708E-04 -1.1605E-04 4.4769E-05 S7 -43.6866 -2.4139E-02 1.0569E-02 -4.5777E-03 1.3078E-03 -1.6514E-04 -1.1033E-05 3.6119E-06 S8 -113.5817 7.1490E-03 -3.0693E-04 -3.7308E-04 9.3222E-05 -1.1970E-05 1.4130E-07 1.3293E-17 S9 -2.3489 1.8867E-02 4.1751E-03 -1.1199E-03 1.9601E-05 0.0000E+00 0.0000E+00 0.0000E+00 S10 7.4037 1.3523E-02 -5.9036E-03 3.0428E-03 -8.5412E-04 9.6685E-05 -1.6390E-07 -4.5364E-07 S11 -2.9777 2.8863E-03 -3.6195E-03 1.6275E-03 -3.6681E-04 2.8212E-05 0.0000E+00 0.0000E+00 S12 150.0000 -1.8448E-04 -1.8054E-03 5.6444E-04 -1.6212E-05 -2.4111E-05 4.0157E-06 -1.8578E-07

[0183] Table 6

[0184] Example 4

[0185] The following reference Figure 4 An optical lens according to Example 4 of the present application is described. Figure 4 A schematic structural diagram of an optical lens according to Example 4 of the present application is shown.

[0186] like Figure 4 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixth lens L6.

[0187] The first lens L1 is a meniscus lens with negative optical power, whose first side surface S1 is convex and whose second side surface S2 is concave. The second lens L2 is a meniscus lens with negative optical power, whose first side surface S3 is concave and whose second side surface S4 is convex. The third lens L3 is a biconvex lens with positive optical power, whose first side surface S6 is convex and whose second side surface S7 is convex. The fourth lens L4 is a meniscus lens with negative optical power, whose first side surface S8 is convex and whose second side surface S9 is concave. The fifth lens L5 is a biconvex lens with positive optical power, whose first side surface S9 is convex and whose second side surface S10 is convex. The sixth lens L6 is a biconvex lens with positive optical power, whose first side surface S11 is convex and whose second side surface S12 is convex.

[0188] The optical lens may further include a stop STO, which may be disposed between the second lens element L2 and the third lens element L3. For example, the stop STO may be disposed near the first side surface S6 of the third lens element L3.

[0189] For example, the optical lens may further include auxiliary lenses L7 and L8 without optical power. Auxiliary lens L7 may have a first side surface S13 and a second side surface S14, and auxiliary lens L8 may have a first side surface S15 and a second side surface S16. Optionally, auxiliary lenses L7 and L8 may be filters or protective glass. Filters may be used to correct color deviation. Protective glass may be used to protect the image sensor chip IMA located at the imaging surface S17.

[0190] The optical lens provided in this application can be used, for example, as an in-vehicle interior view lens. In this case, light from an object sequentially passes through each surface S1 to S16 and is ultimately imaged on an imaging surface S17 disposed on the second side, where an image sensor chip IMA is disposed.

[0191] Table 7 shows the central curvature radius R, thickness / spacing d, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 4. Table 8 shows the conic coefficient and high-order coefficient of each aspheric mirror surface that can be used in Example 4, wherein the surface shape of each aspheric surface can be defined by formula (1) given in Example 1 above.

[0192]

[0193] Table 7

[0194] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -1.3627 -3.5451E-03 -2.8020E-04 1.0268E-04 -2.7128E-05 4.1742E-05 -1.13E-05 -7.38E-08 S4 -18.9392 -3.7899E-02 1.7943E-02 -6.0654E-03 8.8703E-04 2.0391E-04 -7.61E-05 3.64E-06 S6 2.5460 -9.3334E-03 5.2659E-03 -4.6021E-03 2.5804E-03 -5.0708E-04 -1.1605E-04 4.4769E-05 S7 -43.8866 -2.4139E-02 1.0569E-02 -4.5777E-03 1.3078E-03 -1.6514E-04 -1.1033E-05 3.6119E-06 S8 -113.7817 7.1490E-03 -3.0693E-04 -3.7308E-04 9.3222E-05 -1.1970E-05 1.4130E-07 1.3293E-17 S9 -2.5489 1.8867E-02 4.1751E-03 -1.1199E-03 1.9601E-05 0.0000E+00 0.0000E+00 0.0000E+00 S10 7.4037 1.3523E-02 -5.9036E-03 3.0428E-03 -8.5412E-04 9.6685E-05 -1.6390E-07 -4.5364E-07 S11 -3.1777 2.8863E-03 -3.6195E-03 1.6275E-03 -3.6681E-04 2.8212E-05 0.0000E+00 0.0000E+00 S12 149.8000 -1.8448E-04 -1.8054E-03 5.6444E-04 -1.6212E-05 -2.4111E-05 4.0157E-06 -1.8578E-07

[0195] Table 8

[0196] Example 5

[0197] The following reference Figure 5 An optical lens according to Example 5 of the present application is described. Figure 5 A structural schematic diagram of an optical lens according to Example 5 of the present application is shown.

[0198] like Figure 5 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixth lens L6.

[0199] The first lens L1 is a meniscus lens with negative optical power, whose first side surface S1 is convex and whose second side surface S2 is concave. The second lens L2 is a meniscus lens with negative optical power, whose first side surface S3 is concave and whose second side surface S4 is convex. The third lens L3 is a biconvex lens with positive optical power, whose first side surface S6 is convex and whose second side surface S7 is convex. The fourth lens L4 is a biconvex lens with positive optical power, whose first side surface S8 is convex and whose second side surface S9 is convex. The fifth lens L5 is a biconcave lens with negative optical power, whose first side surface S9 is concave and whose second side surface S10 is concave. The sixth lens L6 is a biconvex lens with positive optical power, whose first side surface S11 is convex and whose second side surface S12 is convex.

[0200] The optical lens may further include a stop STO, which may be disposed between the second lens element L2 and the third lens element L3. For example, the stop STO may be disposed near the first side surface S6 of the third lens element L3.

[0201] For example, the optical lens may further include auxiliary lenses L7 and L8 without optical power. Auxiliary lens L7 may have a first side surface S13 and a second side surface S14, and auxiliary lens L8 may have a first side surface S15 and a second side surface S16. Optionally, auxiliary lenses L7 and L8 may be filters or protective glass. Filters may be used to correct color deviation. Protective glass may be used to protect the image sensor chip IMA located at the imaging surface S17.

[0202] The optical lens provided in this application can be used, for example, as an in-vehicle interior view lens. In this case, light from an object sequentially passes through each surface S1 to S16 and is ultimately imaged on an imaging surface S17 disposed on the second side, where an image sensor chip IMA is disposed.

[0203] Table 9 shows the central curvature radius R, thickness / spacing d, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 5. Table 10 shows the conic coefficient and high-order coefficient of each aspheric mirror surface that can be used in Example 5, wherein the surface shape of each aspheric surface can be defined by formula (1) given in Example 1 above.

[0204]

[0205] Table 9

[0206] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -0.7811 -1.4138E-04 2.6720E-03 -2.8285E-04 9.3383E-05 1.6623E-05 -2.00E-05 3.12E-06 S4 -10.7220 -2.9552E-02 1.5524E-02 -4.6503E-03 1.0514E-03 1.1650E-04 -1.41E-04 2.46E-05 S6 -18.6573 -2.7220E-03 1.1811E-02 -2.3420E-02 3.0621E-02 -2.2566E-02 8.4243E-03 -1.2354E-03 S7 9.6006 -6.8572E-04 -5.7708E-04 -2.3366E-04 -1.8364E-05 -6.6738E-06 7.0832E-06 1.7393E-06 S8 64.6609 1.3713E-02 -2.9464E-03 -7.9102E-04 4.1288E-05 1.6396E-05 1.1822E-05 -1.2575E-06 S9 -4.8926 -7.7472E-02 -5.1875E-03 1.9423E-02 -6.1018E-03 7.9338E-05 1.8003E-04 -1.2970E-05 S10 154.9247 -4.5902E-03 5.3760E-03 -3.3765E-04 2.1704E-05 -8.3923E-06 -1.4832E-05 2.4683E-06 S11 8.2654 -2.5892E-02 6.8062E-03 -1.2656E-03 1.6262E-04 9.5387E-06 -7.2340E-06 -1.8902E-07 S12 43.6018 -1.8349E-03 -4.2603E-04 2.2253E-04 1.0269E-05 -7.3936E-06 1.2945E-06 -1.1500E-07

[0207] Table 10

[0208] Example 6

[0209] The following reference Figure 6 An optical lens according to Example 6 of the present application is described. Figure 6 A structural schematic diagram of an optical lens according to Example 6 of the present application is shown.

[0210] like Figure 6 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixth lens L6.

[0211] The first lens L1 is a meniscus lens with negative optical power, whose first side surface S1 is convex and whose second side surface S2 is concave. The second lens L2 is a meniscus lens with negative optical power, whose first side surface S3 is concave and whose second side surface S4 is convex. The third lens L3 is a biconvex lens with positive optical power, whose first side surface S6 is convex and whose second side surface S7 is convex. The fourth lens L4 is a biconvex lens with positive optical power, whose first side surface S8 is convex and whose second side surface S9 is convex. The fifth lens L5 is a meniscus lens with negative optical power, whose first side surface S9 is concave and whose second side surface S10 is convex. The sixth lens L6 is a biconvex lens with positive optical power, whose first side surface S11 is convex and whose second side surface S12 is convex.

[0212] The optical lens may further include a stop STO, which may be disposed between the second lens element L2 and the third lens element L3. For example, the stop STO may be disposed near the first side surface S6 of the third lens element L3.

[0213] For example, the optical lens may further include auxiliary lenses L7 and L8 without optical power. Auxiliary lens L7 may have a first side surface S13 and a second side surface S14, and auxiliary lens L8 may have a first side surface S15 and a second side surface S16. Optionally, auxiliary lenses L7 and L8 may be filters or protective glass. Filters may be used to correct color deviation. Protective glass may be used to protect the image sensor chip IMA located at the imaging surface S17.

[0214] The optical lens provided in this application can be used, for example, as an in-vehicle interior view lens. In this case, light from an object sequentially passes through each surface S1 to S16 and is ultimately imaged on an imaging surface S17 disposed on the second side, where an image sensor chip IMA is disposed.

[0215] Table 11 shows the central curvature radius R, thickness / spacing d, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 6. Table 12 shows the conic coefficient and high-order coefficient of each aspheric mirror surface that can be used in Example 6, wherein the surface shape of each aspheric surface can be defined by formula (1) given in Example 1 above.

[0216]

[0217]

[0218] Table 11

[0219] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -1.0695 -5.6548E-03 2.3603E-03 -4.6740E-04 7.2520E-05 4.3335E-05 -1.13E-05 -7.38E-08 S4 -8.7778 -3.4394E-02 1.6596E-02 -5.4538E-03 8.5817E-04 1.9905E-04 -7.61E-05 3.64E-06 S6 0.0997 -6.7940E-03 7.4041E-03 -5.2097E-03 2.6814E-03 -4.9281E-04 -1.1605E-04 4.4769E-05 S7 -2.5723 4.8742E-03 -1.4598E-03 -2.0096E-04 -1.9291E-04 4.3235E-04 -1.5451E-04 1.7391E-05 S8 -150.1000 2.0609E-02 -3.5692E-03 -1.8121E-03 1.1315E-03 -1.6910E-04 1.7686E-07 4.5364E-07 S9 -0.5089 -2.6251E-02 2.2403E-02 -2.4073E-02 2.0931E-02 -8.6157E-03 1.6212E-03 -1.1157E-04 S10 8.6228 1.1167E-02 -2.5684E-03 1.7879E-03 -4.5960E-04 4.2833E-05 -1.0241E-15 -4.4042E-18 S11 9.0428 5.3143E-03 -3.9000E-03 1.0992E-03 -1.8087E-04 1.1276E-05 0.0000E+00 0.0000E+00 S12 -16.2139 4.6527E-03 -1.9651E-03 4.0217E-04 7.4636E-06 -2.0843E-05 3.4915E-06 -1.8479E-07

[0220] Table 12

[0221] Example 7

[0222] The following reference Figure 7 An optical lens according to Example 7 of the present application is described. Figure 7 A structural schematic diagram of an optical lens according to Example 7 of the present application is shown.

[0223] like Figure 7 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixth lens L6.

[0224] The first lens L1 is a meniscus lens with negative optical power, whose first side surface S1 is convex and whose second side surface S2 is concave. The second lens L2 is a meniscus lens with negative optical power, whose first side surface S3 is concave and whose second side surface S4 is convex. The third lens L3 is a biconvex lens with positive optical power, whose first side surface S6 is convex and whose second side surface S7 is convex. The fourth lens L4 is a biconvex lens with positive optical power, whose first side surface S8 is convex and whose second side surface S9 is convex. The fifth lens L5 is a meniscus lens with negative optical power, whose first side surface S9 is concave and whose second side surface S10 is convex. The sixth lens L6 is a meniscus lens with positive optical power, whose first side surface S11 is convex and whose second side surface S12 is concave.

[0225] The optical lens may further include a stop STO, which may be disposed between the second lens element L2 and the third lens element L3. For example, the stop STO may be disposed near the first side surface S6 of the third lens element L3.

[0226] For example, the optical lens may further include auxiliary lenses L7 and L8 without optical power. Auxiliary lens L7 may have a first side surface S13 and a second side surface S14, and auxiliary lens L8 may have a first side surface S15 and a second side surface S16. Optionally, auxiliary lenses L7 and L8 may be filters or protective glass. Filters may be used to correct color deviation. Protective glass may be used to protect the image sensor chip IMA located at the imaging surface S17.

[0227] The optical lens provided in this application can be used, for example, as an automotive lens. In this case, light from an object sequentially passes through each surface S1 to S16 and is ultimately imaged on an imaging surface S17 disposed on the second side, where an image sensor chip IMA is disposed.

[0228] Table 13 shows the central curvature radius R, thickness / spacing d, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 7. Table 14 shows the conic coefficient and high-order coefficient of each aspheric mirror surface that can be used in Example 7, wherein the surface shape of each aspheric surface can be defined by formula (1) given in Example 1 above.

[0229]

[0230] Table 13

[0231]

[0232]

[0233] Table 14

[0234] Example 8

[0235] The following reference Figure 8 An optical lens according to Example 8 of the present application is described. Figure 8 A structural schematic diagram of an optical lens according to Example 8 of the present application is shown.

[0236] like Figure 8 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixth lens L6.

[0237] The first lens L1 is a meniscus lens with negative optical power, whose first side surface S1 is convex and whose second side surface S2 is concave. The second lens L2 is a meniscus lens with negative optical power, whose first side surface S3 is concave and whose second side surface S4 is convex. The third lens L3 is a biconvex lens with positive optical power, whose first side surface S6 is convex and whose second side surface S7 is convex. The fourth lens L4 is a biconvex lens with positive optical power, whose first side surface S8 is convex and whose second side surface S9 is convex. The fifth lens L5 is a meniscus lens with negative optical power, whose first side surface S9 is concave and whose second side surface S10 is convex. The sixth lens L6 is a meniscus lens with positive optical power, whose first side surface S11 is convex and whose second side surface S12 is concave.

[0238] The optical lens may further include a stop STO, which may be disposed between the second lens element L2 and the third lens element L3. For example, the stop STO may be disposed near the first side surface S6 of the third lens element L3.

[0239] For example, the optical lens may further include auxiliary lenses L7 and L8 without optical power. Auxiliary lens L7 may have a first side surface S13 and a second side surface S14, and auxiliary lens L8 may have a first side surface S15 and a second side surface S16. Optionally, auxiliary lenses L7 and L8 may be filters or protective glass. Filters may be used to correct color deviation. Protective glass may be used to protect the image sensor chip IMA located at the imaging surface S17.

[0240] The optical lens provided in this application can be used, for example, as an in-vehicle interior view lens. In this case, light from an object sequentially passes through each surface S1 to S16 and is ultimately imaged on an imaging surface S17 disposed on the second side, where an image sensor chip IMA is disposed.

[0241] Table 15 shows the central curvature radius R, thickness / spacing d, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 8. Table 16 shows the conic coefficient and high-order coefficient of each aspheric mirror surface that can be used in Example 8, wherein the surface shape of each aspheric surface can be defined by formula (1) given in Example 1 above.

[0242]

[0243]

[0244] Table 15

[0245] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -0.5000 -5.9561E-03 3.6979E-03 -7.2309E-04 1.6919E-04 5.0548E-05 -2.95E-05 3.46E-06 S4 -11.0000 -3.5620E-02 1.8435E-02 -5.1262E-03 7.1335E-04 1.4621E-04 -7.01E-05 8.46E-06 S6 -10.0000 -3.7795E-04 1.1991E-02 -2.2006E-02 3.0845E-02 -2.3550E-02 8.9552E-03 -1.3331E-03 S7 -13.0000 7.4290E-03 -2.6467E-03 -4.1718E-04 8.1789E-04 -1.9207E-04 -8.1084E-07 3.3272E-06 S8 45.0000 2.6010E-02 -6.4523E-03 -3.7572E-04 8.5244E-04 -2.0051E-04 1.8648E-06 1.7613E-06 S9 -2.5000 -6.8195E-02 8.5034E-04 1.0270E-02 -2.4717E-03 -4.0094E-04 2.4779E-04 -2.6466E-05 S10 -1.3000 2.1999E-02 -4.8489E-03 1.0713E-03 -1.4975E-05 1.6096E-05 -1.3522E-05 1.4507E-06 S11 -4.0188 1.0949E-02 -6.1082E-03 9.2186E-04 1.0818E-05 -4.8337E-06 -4.1450E-07 -6.9713E-08 S12 80.0000 -1.8165E-03 -1.0825E-03 2.0144E-04 2.4274E-06 -1.0391E-05 2.6339E-06 -2.0113E-07

[0246] Table 16

[0247] In summary, Examples 1 to 8 respectively satisfy the relationships shown in Table 17. In Table 17, the units of TTL, BFL, H, D, F, F1, F2, F3, F4, F5, F6, R, and Φ are millimeters (mm), and the unit of FOV is degrees (°).

[0248]

[0249]

[0250] Table 17

[0251] The present application also provides an electronic device, which may include an optical lens according to the above-described embodiment of the present application and an imaging element for converting an optical image formed by the optical lens into an electrical signal. The electronic device may be a standalone electronic device such as a range detection camera, or an imaging module integrated into a range detection device. Furthermore, the electronic device may be a standalone imaging device such as an onboard camera, or an imaging module integrated into a driver assistance system.

[0252] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention herein is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features having similar functions disclosed in this application.

Claims

1. An optical lens, characterized in that: The optical axis includes, in order from the first side to the second side: a first lens having negative optical power, wherein the first side surface is convex and the second side surface is concave; a second lens having negative optical power, wherein the first side surface is concave and the second side surface is convex; a third lens element having positive optical power, wherein the first side surface is convex and the second side surface is convex; a fourth lens element having negative optical power, wherein the first side surface is convex and the second side surface is concave; a fifth lens element having positive optical power, wherein the first side surface is convex and the second side surface is convex; and a sixth lens element, wherein the first side surface thereof is a convex surface; Wherein, the number of lenses having optical power in the optical lens is six; The optical lens further includes a stop disposed between the second lens and the third lens, wherein a distance d4 between the second lens and the stop on the optical axis and a total length TTL of the optical lens satisfy the following: 0.0241≤d4 / TTL≤0.1; The maximum field of view FOV of the optical lens, the total length TTL of the optical lens, and the image height H corresponding to the maximum field of view satisfy the following conditions: 0.0192≤TTL / H / FOV≤0.

04.

2. The optical lens according to claim 1, wherein: The sixth lens has negative optical power, and the second side surface thereof is concave.

3. The optical lens according to claim 1, wherein: The sixth lens has positive refractive power, and the second side surface thereof is a convex surface.

4. The optical lens according to claim 1, wherein: The fourth lens and the fifth lens form a cemented lens.

5. The optical lens according to claim 1, wherein: The maximum field of view FOV of the optical lens, the total length TTL of the optical lens, and the image height H corresponding to the maximum field of view satisfy the following conditions: -1.5386≤TTL / H / tan(FOV)≤2.

5.

6. The optical lens according to claim 1, wherein: A central curvature radius R1 of the first side surface of the first lens and a central curvature radius R2 of the second side surface of the first lens satisfy: 2≤R1 / R2≤5.

7. The optical lens according to claim 1, wherein: The maximum field of view FOV of the optical lens, the maximum clear aperture D of the first lens corresponding to the maximum field of view, and the image height H corresponding to the maximum field of view satisfy the following conditions: 0.0082≤D / H / FOV≤0.

02.

8. The optical lens according to claim 1, wherein: The maximum field of view FOV of the optical lens, the maximum clear aperture D of the first lens corresponding to the maximum field of view, and the image height H corresponding to the maximum field of view satisfy the following conditions: -0.6326≤D / H / tan(FOV)≤1.

2.

9. The optical lens according to claim 1, wherein: A back focal length BFL of the optical lens and a total length TTL of the optical lens satisfy the following: 0.1≤BFL / TTL≤0.2550.

10. The optical lens according to claim 1, wherein: The effective focal length F4 of the fourth lens and the effective focal length F5 of the fifth lens satisfy: 0.9832≤ F4 / F5 ≤2.

11. The optical lens according to claim 1, wherein: The maximum field of view FOV of the optical lens, the total effective focal length F of the optical lens, and the image height H corresponding to the maximum field of view satisfy the following conditions: 40≤(FOV×F) / H≤61.1247.

12. The optical lens according to claim 1, wherein: The central curvature radius R8 of the first side surface of the fourth lens and the central curvature radius R9 of the second side surface of the fourth lens satisfy: 1.8≤ R8 / R9 ≤39.0140.

13. The optical lens according to claim 4, wherein: The second side surface of the fourth lens and the first side surface of the fifth lens form a cemented surface, wherein the cemented surface corresponds to an angle of 0.01° with respect to the maximum field angle of the optical lens. arctan(1 / K(L1S9) Satisfaction: 42 ≤ arctan(1 / K(L1S9) ≤48.5074.

14. The optical lens according to claim 1, wherein: The total length TTL of the optical lens and the total effective focal length F of the optical lens satisfy the following conditions: 4.8030≤TTL / F≤7.

15. The optical lens according to claim 1, wherein: The total effective focal length F of the optical lens, the central curvature radius R3 of the first side surface of the second lens, and the central curvature radius R4 of the second side surface of the second lens satisfy: 1.5449≤ F / R3 + F / R4 ≤2.

5.

16. The optical lens according to claim 1, wherein: The distance d7 between the third lens and the fourth lens on the optical axis and the back focal length BFL of the optical lens satisfy the following: 0.3822≤(d7×BFL) / (d7+BFL)≤0.

7.

17. The optical lens according to claim 1, wherein: A central curvature radius R11 of the first side surface of the sixth lens and a central curvature radius R12 of the second side surface of the sixth lens satisfy: -3≤(R11-R12) / (R11+R12)≤0.

5.

18. The optical lens according to claim 1, wherein: A central curvature radius R1 of a first side surface of the first lens, a central curvature radius R2 of a second side surface of the first lens, and a distance d2 between the first lens and the second lens on the optical axis satisfy: 0.8≤R1 / (R2+d2)≤2.

2.

19. The optical lens according to claim 1, wherein: The effective focal length F2 of the second lens and the total effective focal length F of the optical lens satisfy: 4≤ F2 / F ≤10.0713.

20. The optical lens according to claim 1, wherein: The effective focal length F6 of the sixth lens and the total effective focal length F of the optical lens satisfy: 2≤ F6 / F ≤23.9123.

21. The optical lens according to claim 1, wherein: The Abbe number Vd1 of the first lens satisfies: 38≤Vd1≤58.

41.

22. The optical lens according to claim 1, wherein: The refractive index Nd3 of the third lens satisfies: 1.7≤Nd3≤1.

80.

23. The optical lens according to claim 1, wherein: The total length TTL of the optical lens, the image height H corresponding to the maximum field angle of the optical lens, and the maximum field angle θ of the optical lens expressed in radians satisfy the following conditions: 1.1025≤TTL / H / θ≤2.

5.

24. The optical lens according to claim 1, wherein: The maximum clear aperture D of the first lens corresponding to the maximum field angle of the optical lens, the image height H corresponding to the maximum field angle of the optical lens, and the maximum field angle θ of the optical lens expressed in radians satisfy the following conditions: 0.4701≤D / H / θ≤1.

2.

25. The optical lens according to claim 1, wherein: The effective focal length F1 of the first lens and the center thickness d1 of the first lens on the optical axis satisfy the following: -11≤F1 / d1≤-5.

26. The optical lens according to claim 9, wherein: The second side surface of the fourth lens and the first side surface of the fifth lens form a cemented surface, wherein the central curvature radius R of the cemented surface and the effective aperture Φ of the cemented surface satisfy: 0.6≤ R / (Φ / 2)≤1.

5.

27. The optical lens according to claim 1, wherein: An effective focal length F2 of the second lens and a central curvature radius R4 of a second side surface of the second lens satisfy the following relationship: 5.5≤F2 / R4≤82.

28. The optical lens according to claim 1, wherein: The effective focal length F4 of the fourth lens, the effective focal length F5 of the fifth lens, and the total effective focal length F of the optical lens satisfy the following: -5.5≤F4×F5 / F≤-1.

29. The optical lens according to claim 1, wherein: The spacing d4 between the second lens and the aperture on the optical axis and the total length TTL of the optical lens satisfy the following: 0.0241≤d4 / TTL≤0.

08.

30. The optical lens according to claim 1, wherein: The refractive index Nd2 of the second lens satisfies: 1≤Nd2≤1.

58.

31. The optical lens according to claim 1, wherein: The Abbe number Vd2 of the second lens satisfies: 55.8≤Vd2≤65.

32. The optical lens according to claim 1, wherein: The refractive index Nd5 of the fifth lens satisfies: 1.4≤Nd5≤1.

7.

33. The optical lens according to claim 1, wherein: The refractive index Nd4 of the fourth lens satisfies: 1.4≤Nd4≤1.

7.

34. Electronic equipment, characterized in that The invention comprises an optical lens according to any one of claims 1 to 33 and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

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