Optical lens and electronic equipment

Abstract

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

Description

[0001] This application is a divisional application of patent application number 2021108962669, entitled "Optical Lens and Electronic Device", filed on August 5, 2021. Technical Field

[0002] This application relates to the field of optical components, and more specifically, to an optical lens and electronic device. Background Technology

[0003] With the rapid development of the automotive industry, in-vehicle cameras, acting as the "eyes" of cars, are playing an increasingly important role in the automotive accessories market. Currently, the expanded functions of new in-vehicle interior cameras include monitoring interior packages, unattended children, and providing video call capabilities to meet passenger needs. To meet the functional requirements of in-vehicle interior cameras, the lens needs to simultaneously support both color imaging (RGB) and infrared (IR) capabilities. On one hand, the lens can receive visible light (RGB) during the day to meet the needs of visual video calls. On the other hand, the lens can receive infrared light at night to achieve monitoring in low-light conditions. In other words, a single lens needs to integrate the combined functions of two conventional color imaging lenses and a night monitoring lens.

[0004] However, using a single lens to achieve the above functions presents several challenges. First, the significantly expanded operating wavelength of the lens necessitates maintaining the same focal plane across this broad band, resulting in lower image sharpness. Second, the size of the internal viewing lens is limited by technological and manufacturing constraints, making miniaturization difficult and failing to meet the requirement of limited installation space. Furthermore, current internal viewing lenses cannot achieve the same resolution at room temperature under significant temperature variations. Additionally, to meet the monitoring needs of the cabin and passengers, higher requirements are placed on the field of view of the internal viewing lens.

[0005] Therefore, the market urgently needs an optical lens that can solve the above-mentioned technical problems. Summary of the Invention

[0006] This application provides an optical lens. The optical lens includes, sequentially from a first side to a second side along the optical axis: a first lens having negative optical power, wherein a first side surface is convex and a second side surface is concave; a second lens having negative optical power, wherein a first side surface is concave and a second side surface is convex; a third lens having positive optical power, wherein a first side surface is convex and a second side surface is convex; a fourth lens; a fifth lens; and a sixth lens.

[0007] In some embodiments, the fourth lens has negative optical power, with its first side being convex and its second side being concave; and the fifth lens has positive optical power, with its first side being convex and its second side being convex.

[0008] In some embodiments, the sixth lens has negative optical power, with its first side surface being convex and its second side surface being concave.

[0009] In some embodiments, the fourth lens has positive optical power, and its first side surface is convex, and its second side surface is convex; and

[0010] In some implementations, the fifth lens has negative optical power.

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

[0012] In some embodiments, the first side of the fifth lens is concave and the second side is convex.

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

[0014] In some embodiments, the sixth lens has positive optical power, with its first side surface being convex and its second side surface being concave.

[0015] In some implementations, the fourth and fifth lenses form a cemented lens.

[0016] In some implementations, 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 condition: TTL / H / FOV ≤ 0.04.

[0017] In some implementations, 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.

[0018] In some embodiments, the central radius of curvature R1 of the first side surface of the first lens and the central radius of curvature R2 of the second side surface of the first lens satisfy: 2≤R1 / R2≤5.

[0019] In some implementations, the maximum field of view (FOV) of the optical lens, the maximum 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.

[0020] In some implementations, the maximum field of view (FOV) of the optical lens, the maximum 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.

[0021] In some implementations, the back focal length BFL of the optical lens and the total length TTL of the optical lens satisfy the condition: BFL / TTL≥0.1.

[0022] In some implementations, the effective focal length F4 of the fourth lens and the effective focal length F5 of the fifth lens satisfy: |F4 / F5|≤2.

[0023] In some implementations, 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.

[0024] In some embodiments, the central radius of curvature R8 of the first side surface of the fourth lens and the central radius of curvature R9 of the second side surface of the fourth lens satisfy: |R8 / R9|≥1.8.

[0025] In some embodiments, the optical lens further includes an aperture stop disposed between the second lens and the third lens, wherein the distance d4 between the second lens and the aperture stop on the optical axis satisfies the condition that d4 / TTL of the total length of the optical lens ≤ 0.1.

[0026] 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 the angle |arctan(1 / K(L1S9)| between the cemented surface and the maximum field of view of the optical lens satisfies: |arctan(1 / K(L1S9)|≥42.

[0027] In some implementations, the total length TTL of the optical lens and the total effective focal length F of the optical lens satisfy: TTL / F≤7.

[0028] In some embodiments, the total effective focal length F of the optical lens, the central radius of curvature R3 of the first side surface of the second lens, and the central radius of curvature R4 of the second side surface of the second lens satisfy: |F / R3|+|F / R4|≤2.5.

[0029] In some implementations, the distance d7 between the third and fourth lenses on the optical axis satisfies the following condition with respect to the back focal length BFL of the optical lens: (d7×BFL) / (d7+BFL)≤0.7.

[0030] In some embodiments, the central curvature radius R11 of the first side of the sixth lens and the central curvature radius R12 of the second side of the sixth lens satisfy: -3≤(R11-R12) / (R11+R12)≤0.5.

[0031] In some embodiments, the central radius of curvature R1 of the first side surface of the first lens, the central radius of curvature R2 of the second side surface of the first lens, and the distance d2 between the first lens and the second lens on the optical axis satisfy: 0.8≤R1 / (R2+d2)≤2.2.

[0032] In some implementations, the effective focal length F2 of the second lens and the total effective focal length F of the optical lens satisfy: |F2 / F|≥4.

[0033] In some implementations, the effective focal length F6 of the sixth lens and the total effective focal length F of the optical lens satisfy: |F6 / F|≥2.

[0034] In some implementations, the Abbe number Vd1 of the first lens satisfies: Vd1≥38.

[0035] In some implementations, the refractive index Nd3 of the third lens satisfies: Nd3≥1.7.

[0036] In some implementations, the total length TTL 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 θ of the optical lens in radians satisfy: TTL / H / θ≤2.5.

[0037] In some embodiments, 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 θ of the optical lens expressed in radians satisfy: D / H / θ≤1.2.

[0038] 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.

[0039] 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 the central radius of curvature R of the cemented surface and the effective aperture Φ of the cemented surface satisfy: 0.6≤|R| / (Φ / 2)≤1.5.

[0040] In some embodiments, the effective focal length F2 of the second lens and the central radius of curvature R4 of the second side surface of the second lens satisfy: 5.5≤F2 / R4≤82.

[0041] In some implementations, 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.

[0042] This application also provides an optical lens. The optical lens includes, sequentially from a first side to a second side along the optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, wherein the first and second lenses 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 θ of the optical lens expressed in radians satisfy: D / H / θ≤1.2.

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

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

[0045] In some embodiments, the first side surface of the third lens is convex, and the second side surface is convex.

[0046] In some embodiments, the fourth lens has negative optical power, with its first side being convex and its second side being concave; and the fifth lens has positive optical power, with its first side being convex and its second side being convex.

[0047] In some embodiments, the sixth lens has negative optical power, with its first side surface being convex and its second side surface being concave.

[0048] In some embodiments, the fourth lens has positive optical power, and its first side surface is convex, and its second side surface is convex; and

[0049] In some implementations, the fifth lens has negative optical power.

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

[0051] In some embodiments, the first side of the fifth lens is concave and the second side is convex.

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

[0053] In some embodiments, the sixth lens has positive optical power, with its first side surface being convex and its second side surface being concave.

[0054] In some implementations, the fourth and fifth lenses form a cemented lens.

[0055] In some implementations, 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 condition: TTL / H / FOV ≤ 0.04.

[0056] In some implementations, 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.

[0057] In some embodiments, the central radius of curvature R1 of the first side surface of the first lens and the central radius of curvature R2 of the second side surface of the first lens satisfy: 2≤R1 / R2≤5.

[0058] In some implementations, the maximum field of view (FOV) of the optical lens, the maximum 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.

[0059] In some implementations, the maximum field of view (FOV) of the optical lens, the maximum 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.

[0060] In some implementations, the back focal length BFL of the optical lens and the total length TTL of the optical lens satisfy the condition: BFL / TTL≥0.1.

[0061] In some implementations, the effective focal length F4 of the fourth lens and the effective focal length F5 of the fifth lens satisfy: |F4 / F5|≤2.

[0062] In some implementations, 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.

[0063] In some embodiments, the central radius of curvature R8 of the first side surface of the fourth lens and the central radius of curvature R9 of the second side surface of the fourth lens satisfy: |R8 / R9|≥1.8.

[0064] In some embodiments, the optical lens further includes an aperture stop disposed between the second lens and the third lens, wherein the distance d4 between the second lens and the aperture stop on the optical axis satisfies the condition that d4 / TTL of the total length of the optical lens ≤ 0.1.

[0065] 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 the angle |arctan(1 / K(L1S9)| between the cemented surface and the maximum field of view of the optical lens satisfies: |arctan(1 / K(L1S9)|≥42.

[0066] In some implementations, the total length TTL of the optical lens and the total effective focal length F of the optical lens satisfy: TTL / F≤7.

[0067] In some embodiments, the total effective focal length F of the optical lens, the central radius of curvature R3 of the first side surface of the second lens, and the central radius of curvature R4 of the second side surface of the second lens satisfy: |F / R3|+|F / R4|≤2.5.

[0068] In some implementations, the distance d7 between the third and fourth lenses on the optical axis satisfies the following condition with respect to the back focal length BFL of the optical lens: (d7×BFL) / (d7+BFL)≤0.7.

[0069] In some embodiments, the central curvature radius R11 of the first side of the sixth lens and the central curvature radius R12 of the second side of the sixth lens satisfy: -3≤(R11-R12) / (R11+R12)≤0.5.

[0070] In some embodiments, the central radius of curvature R1 of the first side surface of the first lens, the central radius of curvature R2 of the second side surface of the first lens, and the distance d2 between the first lens and the second lens on the optical axis satisfy: 0.8≤R1 / (R2+d2)≤2.2.

[0071] In some implementations, the effective focal length F2 of the second lens and the total effective focal length F of the optical lens satisfy: |F2 / F|≥4.

[0072] In some implementations, the effective focal length F6 of the sixth lens and the total effective focal length F of the optical lens satisfy: |F6 / F|≥2.

[0073] In some implementations, the Abbe number Vd1 of the first lens satisfies: Vd1≥38.

[0074] In some implementations, the refractive index Nd3 of the third lens satisfies: Nd3≥1.7.

[0075] In some implementations, the total length TTL 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 θ of the optical lens in radians satisfy: TTL / H / θ≤2.5.

[0076] 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.

[0077] 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 the central radius of curvature R of the cemented surface and the effective aperture Φ of the cemented surface satisfy: 0.6≤|R| / (Φ / 2)≤1.5.

[0078] In some embodiments, the effective focal length F2 of the second lens and the central radius of curvature R4 of the second side surface of the second lens satisfy: 5.5≤F2 / R4≤82.

[0079] In some implementations, 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.

[0080] In another aspect, this application also provides an electronic device, including an optical lens according to this application and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

[0081] This application employs six lenses. By optimizing the shape and optical power of each lens, the optical lens achieves at least one beneficial effect, such as excellent imaging quality over a wide spectral range, miniaturization, a large field of view, and good temperature performance. Attached Figure Description

[0082] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings. In the drawings:

[0083] Figure 1 This is a schematic diagram illustrating the structure of an optical lens according to Embodiment 1 of this application;

[0084] Figure 2 To illustrate the structure of the optical lens according to Embodiment 2 of this application;

[0085] Figure 3 To illustrate the structure of the optical lens according to Embodiment 3 of this application;

[0086] Figure 4 This is a schematic diagram illustrating the structure of the optical lens according to Embodiment 4 of this application;

[0087] Figure 5 This is a schematic diagram illustrating the structure of the optical lens according to Embodiment 5 of this application;

[0088] Figure 6 To illustrate the structure of the optical lens according to Embodiment 6 of this application;

[0089] Figure 7 To illustrate the structural schematic diagram of the optical lens according to Embodiment 7 of this application; and

[0090] Figure 8 This is a schematic diagram illustrating the structure of an optical lens according to Embodiment 8 of this application. Detailed Implementation

[0091] To facilitate understanding of this application, a more complete description of the application will be provided below with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of the application and are not intended to limit the scope of the 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.

[0092] It should be noted that in this specification, the terms "first," "second," "third," etc., are used only to distinguish one feature from another and do not imply any limitation on the features. Therefore, without departing from the teachings of this application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0093] In the accompanying drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are illustrated by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not strictly to scale.

[0094] In this document, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the location of the convexity is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the location of the concaveness is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the first side is called the first side surface of the lens, and the surface of each lens closest to the second side is called the second side surface of the lens. The surface of an optical lens closest to the second side is called the second side surface of the optical lens. Exemplarily, the first side can be the object side and the second side can be the image side; or, the first side can be the imaging side and the second side can be the image source side.

[0095] It should also be understood that the terms "comprising," "including," "having," "containing," and / or "comprising," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. Furthermore, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features, not individual elements in the list. Additionally, when describing embodiments of this application, the word "may" is used to mean "one or more embodiments of this application." And the term "exemplary" is intended to refer to an example or illustration.

[0096] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms (e.g., those defined in common dictionaries) shall be interpreted as having a meaning consistent with their meaning in the context of the relevant art and shall not be interpreted in an idealized or overly formalized sense, unless expressly so specified herein.

[0097] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0098] The features, principles and other aspects of this application are described in detail below.

[0099] In an exemplary embodiment, the optical lens includes, for example, six lenses with optical power, namely a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. These six lenses are arranged sequentially along the optical axis from the first side to the second side.

[0100] In an exemplary embodiment, the optical lens provided in this application can be used, for example, as an in-vehicle interior view camera. 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 rays 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.

[0101] In an exemplary embodiment, the optical lens provided in this application can be used as, for example, a projection lens or a lidar 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 of the optical lens can be the image source surface of the optical lens.

[0102] In an exemplary embodiment, the optical lens may further include a photosensitive element disposed on the second side. Optionally, the photosensitive element disposed on the second side may be a photocoupled device (CCD) or a complementary metal oxide semiconductor device (CMOS).

[0103] In an exemplary embodiment, the first lens may have negative optical power and may have a convex-concave surface. The first side surface of the first lens is convex, which helps to reduce the incident angle of light on the attack surface, achieve large-angle light collection, and allow peripheral field rays to smoothly enter the rear optical element, thereby increasing the field of view. The second side surface of the first lens is concave, which facilitates the divergent transition of light to the rear optical element. Furthermore, when the first lens is made of a high Abbe number material, it is beneficial to correct aberrations across the entire wavelength band, such as the infrared band, and to improve resolution and confocality in the infrared band. Further, by reasonably limiting the Abbe number range of the first lens, it is beneficial to increase light collection and reduce the effective aperture of the front end.

[0104] In an exemplary embodiment, the second lens may have negative optical power and a concave-convex surface. This configuration of optical power and surface of the second lens facilitates the transition and adjustment of light rays deflected from the first lens, reduces the overall effective height of the light rays, and decreases the front aperture. When the second lens adopts a near-concentric lens shape, it helps reduce the optical path difference between the lens center and periphery, thus correcting lens distortion. Furthermore, by reasonably limiting the optical power of the second lens (e.g., a larger optical power), the influence 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.

[0105] In an exemplary embodiment, the third lens may have positive optical power and a biconvex shape. This optical power and shape configuration of the third lens facilitates light convergence and compresses the angle of incident light, resulting in a smoother light transition, while also reducing the rear aperture of the optical lens. When the third lens is made of a high-refractive-index material, light can be converged quickly, and light divergence can be reduced. Furthermore, by appropriately limiting the Abbe number of the third lens, chromatic aberration can be balanced, and image quality can be improved.

[0106] In an exemplary embodiment, the fourth lens may have negative optical power and may have a convex-concave surface. The fifth lens has positive optical power and is biconvex. The first side surface of the fourth lens is convex, which helps to reduce the height of light entering the fourth lens. Furthermore, by reasonably increasing the central radius of curvature of the first side surface of the fourth lens, it is beneficial to reduce the central optical path between the fourth lens and the rear optical element, which helps to reduce ghosting caused by the convergence of reflected energy. In addition, the fourth lens having negative optical power and the fifth lens having positive optical power helps to maintain the stability of imaging under high and low temperature conditions. At the same time, the first side surface of the fifth lens is convex, which allows the diverging light rays passing through the fourth lens with negative optical power to enter the rear lens smoothly and improves the resolving power. Furthermore, by limiting the fourth and fifth lenses 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.

[0107] In an exemplary embodiment, the fourth lens may have positive optical power and may be biconvex. The fifth lens may have negative optical power and may be concave-convex or biconcave. The first side surface of the fourth lens is convex, which helps to reduce the height of light entering the fourth lens. The fifth lens has negative optical power, which allows the light converged by the positively powered fourth lens to smoothly transition to the rear lens, thus improving resolving power. Furthermore, by limiting the fourth and fifth lenses to have similar effective focal lengths, it is beneficial to maintain imaging stability under high and low temperature conditions. In addition, the negative optical power of the fifth lens also enables it to collect light passing through the fourth lens, resulting in a smooth transition of light path.

[0108] In an exemplary embodiment, the sixth lens may have positive or negative optical power. The sixth lens has a convex-concave surface, which facilitates the effective transition of forward light rays and increases the distribution of the central optical power of the sixth lens, thereby reducing the impact of high and low temperature variations on the back focal shift and improving the temperature performance of the optical lens. The second side surface of the sixth lens is concave, which helps to increase the exit angle of peripheral light rays, resulting in a larger imaging plane size. It also helps to reduce the back focal distance, shorten the overall length of the optical lens, and facilitate miniaturization. The sixth lens may also have a biconvex surface, where the second side surface is convex, which facilitates the smooth incidence of large-angle light rays onto the imaging plane, meeting the need for increased illumination.

[0109] In an exemplary embodiment, an aperture stop for converging light can be provided between the second and third lenses to further improve the imaging quality of the optical lens. Placing the aperture stop between the second and third lenses helps to effectively converge the light entering the optical lens, reducing the aperture of the front lens and lowering the assembly sensitivity of the optical lens. Furthermore, since the light passing through the first and second lenses is divergent, placing the aperture stop between the second and third lenses also contributes to the optical lens having a large aperture. In this embodiment, the aperture stop can be located near the second side of the second lens or near the first side of the third lens. However, it should be noted that the positions of the aperture stop disclosed herein are merely examples and not limitations. In alternative embodiments, the aperture stop can also be placed in other positions as needed. For example, it can be placed anywhere between the third lens and the imaging plane, and this placement helps to reduce the rear aperture and decrease the introduction of peripheral aberration rays into the rear optical elements, thereby improving resolving power.

[0110] In an exemplary embodiment, the fourth and fifth lenses are cemented together. This arrangement helps to shorten the overall length of the optical lens, thereby facilitating its miniaturization. Furthermore, light passing through the cemented lens is not significantly refracted, effectively bridging incoming light and reducing lens sensitivity. By using fourth and fifth lenses with different Abbe numbers to form the cemented lens, the overall aberration correction of the optical lens is improved, enhancing image quality. Simultaneously, the close focal lengths of the fourth and fifth lenses effectively improve the thermal compensation effect of the optical lens. In addition, cemented lenses have the following beneficial effects: they can fully correct various aberrations of optical lenses, and improve optical performance such as resolution, distortion, and CRA while maintaining a compact optical lens structure; the higher refractive index of the cemented lens compared to the lens with positive optical power and negative optical power allows light to converge effectively and smoothly, ensuring that the light reaches the imaging plane smoothly and reducing the overall weight and cost of the optical lens; they can reduce light loss caused by reflections between lenses, and the combination of high and low refractive indices of the two lenses facilitates a rapid transition of light from the front, and by increasing the aperture, the amount of light transmitted can be increased, which is helpful for night vision needs; they can reduce the air gap between the two lenses, making the overall structure of the optical lens more compact, while reducing tolerance sensitivity issues such as overall eccentricity during lens assembly.

[0111] In an exemplary embodiment, the optical lens according to this application satisfies the following condition: 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. Satisfying TTL / H / FOV ≤ 0.04 helps to effectively limit the total length of the optical lens while maintaining the same imaging plane and image height, thus facilitating the miniaturization of the optical lens. More specifically, TTL, H, and FOV can further satisfy: TTL / H / FOV ≤ 0.03.

[0112] In an exemplary embodiment, the optical lens according to this application satisfies: TTL / H / tan(FOV) ≤ 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 FOV is the maximum field of view of the optical lens. Satisfying TTL / H / tan(FOV) ≤ 2.5 helps to effectively limit the total length of the optical lens while maintaining the same imaging plane and image height, thus facilitating the miniaturization of the optical lens. More specifically, TTL, H, and FOV can further satisfy: TTL / H / tan(FOV) ≤ 2.

[0113] In an exemplary embodiment, the optical lens according to this application satisfies: 2 ≤ R1 / R2 ≤ 5. Here, R1 is the central radius of curvature of the first side surface of the first lens, and R2 is the central radius of curvature of the second side surface of the first lens. The optical lens satisfying 2 ≤ R1 / R2 ≤ 5 allows for reasonable control of the lens shape of the first lens and enables the collection of large-angle light rays into the rear optical elements. It also helps to reduce the front aperture and volume of the optical lens, improve resolution, and achieve miniaturization. More specifically, R1 and R2 can further satisfy: 2.1 ≤ R1 / R2 ≤ 4.2.

[0114] In an exemplary embodiment, the optical lens according to this application satisfies: 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 FOV of the optical lens. Satisfying D / H / FOV ≤ 0.02 is beneficial for reducing the front aperture of the optical lens and achieving miniaturization. More specifically, D, H, and FOV can further satisfy: D / H / FOV ≤ 0.015.

[0115] In an exemplary embodiment, the optical lens according to this application satisfies: 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. Satisfying D / H / tan(FOV) ≤ 1.2 is beneficial for reducing the front aperture of the optical lens and achieving miniaturization. More specifically, D, H, and FOV can further satisfy: D / H / tan(FOV) ≤ 0.9.

[0116] In an exemplary embodiment, the optical lens according to this application satisfies the following condition: 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. Satisfying BFL / TTL ≥ 0.1 allows the optical lens to have a long back focal length while achieving miniaturization, and also helps reduce the energy of ghost images generated by reflections from the center of the optical lens and filter. Furthermore, it facilitates assembly with a photosensitive element. More specifically, BFL and TTL can further satisfy: BFL / TTL ≥ 0.15.

[0117] In an exemplary embodiment, the optical lens according to this application satisfies: |F4 / F5|≤2. Here, F4 is the effective focal length of the fourth lens, and F5 is the effective focal length of the fifth lens. The optical lens satisfying |F4 / F5|≤2 allows the focal lengths of the fourth and fifth lenses to be close, which helps in a smooth transition of light, facilitates the correction of chromatic aberration, improves image quality, and helps improve the thermal compensation of the optical lens. More specifically, F4 and F5 can further satisfy: |F4 / F5|≤1.5.

[0118] In an exemplary embodiment, the optical lens according to this application satisfies the following condition: (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. The optical lens satisfying (FOV×F) / H≥40 enables it to combine the characteristics of a long focal length and a large field of view. More specifically, FOV, F, and H can further satisfy: (FOV×F) / H≥45.

[0119] In an exemplary embodiment, the optical lens according to this application satisfies: |R8 / R9|≥1.8. Here, R8 is the central radius of curvature of the first side of the fourth lens, and R9 is the central radius of curvature of the second side of the fourth lens. The optical lens satisfies |R8 / R9|≥1.8, and through proper configuration with the fifth lens, it can compress the light collected by the fourth lens. This makes the light path relatively smooth, allowing the light to transition smoothly to the rear elements. Simultaneously, it can effectively reduce the aberrations of the optical lens and improve image quality. When the value is less than the minimum of the above conditional expression, the incident angle of the light incident on the first side of the fifth lens will increase, leading to a decrease in relative illumination. Therefore, by satisfying the above conditional expression, a bright image of high quality can be obtained. Furthermore, the central radius of curvature of the first side of the fourth lens should be as smooth as possible, which helps to reduce the central optical path between the fourth lens and the rear optical elements, and helps to reduce ghosting caused by the convergence of reflected energy. More specifically, R8 and R9 can further satisfy: |R8 / R9|≥2.

[0120] In an exemplary embodiment, the optical lens according to this application satisfies: d4 / TTL≤0.1. Here, d4 is the distance between the second lens and the aperture stop on the optical axis, and TTL is the total length of the optical lens. Satisfying d4 / TTL≤0.1 allows for a smaller distance between the second lens and the aperture stop, resulting in a smoother transition of light near the aperture stop, which is beneficial for improving image quality. More specifically, d4 and TTL can further satisfy: d4 / TTL≤0.08.

[0121] In an exemplary embodiment, the optical lens according to this application satisfies: |arctan(1 / K(L1S9)|≥42. Here, |arctan(1 / K(L1S9)| is the angle between the cemented surface formed by the second side of the fourth lens and the first side of the fifth lens and the maximum field of view. The optical lens satisfying |arctan(1 / K(L1S9)|≥42 allows for a larger angle between the cemented surfaces, which is beneficial for quickly focusing light rays through the fourth lens and improving image quality. More specifically, |arctan(1 / K(L1S9)| can further satisfy: |arctan(1 / K(L1S9)|≥43.

[0122] In an exemplary embodiment, the optical lens according to this application satisfies: 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. Satisfying TTL / F ≤ 7 effectively limits the total length of the optical lens, which is beneficial for miniaturization. More specifically, TTL and F can further satisfy: TTL / F ≤ 6.5.

[0123] In an exemplary embodiment, the optical lens according to this application satisfies: |F / R3|+|F / R4|≤2.5. Where 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 satisfying |F / R3|+|F / R4|≤2.5 effectively controls the surface curvature of the second lens, assists incident light in entering the optical lens, and effectively corrects astigmatism to improve image quality. More specifically, F, R3, and R4 can further satisfy: |F / R3|+|F / R4|≤2.2.

[0124] In an exemplary embodiment, the optical lens according to this application satisfies: (d7×BFL) / (d7+BFL)≤0.7. Here, d7 is the distance between the third and fourth lenses on the optical axis, and BFL is the back focal length of the optical lens. Satisfying (d7×BFL) / (d7+BFL)≤0.7 helps balance the ratio of the back focal length to the distance between the third and fourth lenses, which is beneficial for improving assembly yield. It also helps the optical lens have sufficient back focal length to accommodate other optical components, increasing design flexibility. More specifically, d7 and BFL can further satisfy: (d7×BFL) / (d7+BFL)≤0.55.

[0125] In an exemplary embodiment, the optical lens according to this application satisfies: -3 ≤ (R11-R12) / (R11+R12) ≤ 0.5. Here, R11 is the central radius of curvature of the first side of the sixth lens, and R12 is the central radius of curvature of the second side of the sixth lens. Satisfying -3 ≤ (R11-R12) / (R11+R12) ≤ 0.5 allows the central radii of curvature of the first and second sides of the sixth lens to be close, resulting in a smoother light path after passing through the sixth lens. This also helps correct aberrations in 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.

[0126] In an exemplary embodiment, the optical lens according to this application satisfies: 0.8 ≤ R1 / (R2+d2) ≤ 2.2. Wherein, R1 is the central radius of curvature of the first side surface of the first lens, R2 is the central radius of curvature of the second side surface of the first lens, and d2 is the distance between the first and second lenses on the optical axis. Satisfying 0.8 ≤ R1 / (R2+d2) ≤ 2.2 allows the first lens to have a special lens shape, thereby creating an optical path difference between the peripheral rays and the central rays of the first lens, allowing the diverging central rays to enter the rear optical system. This also helps to reduce the front aperture and volume of the optical lens, facilitating miniaturization and cost reduction. More specifically, R1, R2, and d2 can further satisfy: 1 ​​≤ R1 / (R2+d2) ≤ 2.

[0127] In an exemplary embodiment, the optical lens according to this application satisfies: |F2 / F|≥4. Here, F2 is the effective focal length of the second lens, and F is the total effective focal length of the optical lens. Satisfying |F2 / F|≥4 helps achieve thermal compensation in the optical lens, thereby giving it good temperature performance. More specifically, F2 and F can further satisfy: |F2 / F|≥5.

[0128] In an exemplary embodiment, the optical lens according to this application satisfies: |F6 / F|≥2. Here, F6 is the effective focal length of the sixth lens, and F is the total effective focal length of the optical lens. Satisfying |F6 / F|≥2 helps achieve thermal compensation in the optical lens, thereby giving it good temperature performance. More specifically, F6 and F can further satisfy: |F6 / F|≥3.

[0129] In an exemplary embodiment, the optical lens according to this application satisfies: Vd1 ≥ 38. Here, Vd1 is the Abbe number of the first lens. The optical lens satisfying Vd1 ≥ 38 is beneficial for improving the imaging quality of infrared light while balancing the resolution of visible and infrared light. More specifically, Vd1 can further satisfy: Vd1 ≥ 40.

[0130] In an exemplary embodiment, the optical lens according to this application satisfies: Nd3 ≥ 1.7. Here, Nd3 is the refractive index of the third lens. Having an optical lens with Nd3 ≥ 1.7 is beneficial for improving image quality, enabling the optical lens to have high resolution capabilities in both visible and infrared light. More specifically, Nd3 can further satisfy: Nd3 ≥ 1.75.

[0131] In an exemplary embodiment, the optical lens according to this application satisfies: 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. Satisfying TTL / H / θ ≤ 2.5 helps to effectively limit the total length of the optical lens while maintaining the same imaging plane and image height, thus facilitating the miniaturization of the optical lens. More specifically, TTL, H, and θ can further satisfy: TTL / H / θ ≤ 2.

[0132] In an exemplary embodiment, the optical lens according to this application satisfies: 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. Satisfying D / H / θ ≤ 1.2 is beneficial for reducing the front aperture of the optical lens and achieving miniaturization. More specifically, D, H, and θ can further satisfy: D / H / θ ≤ 0.9.

[0133] In an exemplary embodiment, the optical lens according to this application satisfies: -11 ≤ F1 / d1 ≤ -5. Here, F1 is the effective focal length of the first lens, and d1 is the center thickness of the first lens along the optical axis. The optical lens satisfying -11 ≤ F1 / d1 ≤ -5 provides it with a large field of view, low sensitivity, and miniaturization. It also better corrects aberrations and improves image quality. More specifically, F1 and d1 can further satisfy: -10 ≤ F1 / d1 ≤ -5.1.

[0134] In an exemplary embodiment, the optical lens according to this application satisfies: 0.6 ≤ |R| / (Φ / 2) ≤ 1.5. Wherein, R is the radius of curvature of the center of the cemented 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 cemented surface. The optical lens satisfying 0.6 ≤ |R| / (Φ / 2) ≤ 1.5 effectively controls the resulting advanced aberrations, thereby improving the overall light transmission and resolving power of the optical lens and effectively reducing the manufacturing process requirements of the cemented surface. More specifically, R and Φ can further satisfy: 0.65 ≤ |R| / (Φ / 2) ≤ 1.4.

[0135] In an exemplary embodiment, the optical lens according to this application satisfies: 5.5 ≤ F2 / R4 ≤ 82. Here, F2 is the effective focal length of the second lens, and R4 is the central radius of curvature of the second side surface of the second lens. Satisfying 5.5 ≤ F2 / R4 ≤ 82 ensures that the optical lens has low distortion and effectively reduces imaging distortion caused by distortion. More specifically, F2 and R4 can further satisfy: 5.8 ≤ F2 / R4 ≤ 81.

[0136] In an exemplary embodiment, the optical lens according to this application satisfies: -5.5 ≤ F4 × F5 / F ≤ -1. Here, F4 is the effective focal length of the fourth lens, F5 is the effective focal length of the fifth lens, and F is the total effective focal length of the optical lens. The optical lens satisfying -5.5 ≤ F4 × F5 / F ≤ -1 enables aberration correction between the fourth and fifth lenses, which is beneficial for improving image resolution. More specifically, F4, F5, and F may further satisfy: -5 ≤ F4 × F5 / F ≤ -2.

[0137] In an exemplary embodiment, the optical lens according to this application satisfies the following conditions: 1≤Nd2≤1.58, 55.8≤Vd2≤65, 1.4≤Nd5≤1.7, and 1.4≤Nd4≤1.7. Here, Nd2 is the refractive index of the second lens, Vd2 is the Abbe number of the second lens, Nd5 is the refractive index of the fifth lens, and Nd4 is the refractive index of the fourth lens. Satisfying these conditions simplifies the optical lens structure and ensures good optical performance. More specifically, Nd2, Vd2, Nd5, and Nd4 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.

[0138] In an exemplary embodiment, the first to sixth lenses can be spherical lenses or aspherical lenses. Exemplarily, the first lens can be a spherical lens, and the second to sixth lenses can be aspherical lenses. Using aspherical lenses for the second and sixth lenses is beneficial for correcting aberrations in the optical lens, improving the resolving power of the optical lens, and also for the confocal performance of imaging after receiving visible and infrared light. This application does not specifically limit the number of spherical and aspherical lenses; when image quality is a primary concern, the number of aspherical lenses can be increased. Specifically, to improve the resolving quality of the optical system, the second to sixth lenses can all be aspherical lenses. The characteristic of an aspherical lens is that its curvature changes continuously from the center to the periphery. Unlike a spherical lens, which has a constant curvature from the center to the periphery, an aspherical lens has better radius of curvature characteristics, offering advantages in improving distortion aberrations and astigmatism. By using aspherical lenses, aberrations occurring during imaging can be eliminated as much as possible, thereby improving the image quality of the lens.

[0139] In an exemplary embodiment, the optical lens of this application may also include a filter and / or protective glass disposed between the sixth lens and the imaging surface, as needed, to filter light of different wavelengths and prevent damage to the image-side elements (e.g., chips) of the optical lens.

[0140] In an exemplary embodiment, the first lens, second lens, third lens, fourth lens, fifth lens, and sixth lens can all be glass lenses. Using glass avoids image blurring caused by high and low temperature changes in the operating environment, thus preventing interference with normal lens use. Specifically, when image quality and reliability are of paramount importance, the first to sixth lenses can all be aspherical glass lenses. Of course, in applications with lower temperature stability requirements, the first to sixth lenses in the optical lens can also be made of plastic. Using plastic to make optical lenses effectively reduces manufacturing costs. Alternatively, the first to sixth lenses in the optical lens can also be made of a combination of plastic and glass.

[0141] The optical lens according to the above embodiments of this application, through the reasonable setting of the shape and power of each lens, can have at least one beneficial effect such as good imaging quality over a wide spectral range, miniaturization, large field of view and good temperature performance when using only six lenses.

[0142] However, those skilled in the art will understand that the number of lenses constituting the lens can be varied to obtain the various results and advantages described herein without departing from the technical solutions claimed in this application. For example, although six lenses have been described as an example in the embodiments, the optical lens is not limited to including six lenses. If desired, the optical lens may also include other numbers of lenses.

[0143] Specific embodiments of the optical lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.

[0144] Example 1

[0145] The following is for reference Figure 1 The optical lens according to Embodiment 1 of this application is described. Figure 1 A schematic diagram of the structure of an optical lens according to Embodiment 1 of this application is shown.

[0146] like Figure 1 As shown, the optical lens includes, in sequence from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6.

[0147] The first lens L1 is a meniscus lens with negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a meniscus lens with negative optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 is a biconvex lens with positive optical power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 is a meniscus lens with negative optical power, its first side surface S8 is convex, and its second side surface S9 is concave. The fifth lens L5 is a biconvex lens with positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 is a meniscus lens with negative optical power, its first side surface S11 is convex, and its second side surface S12 is concave.

[0148] The optical lens may also include an aperture stop STO, which may be positioned between the second lens L2 and the third lens L3. For example, the aperture stop STO may be positioned close to the first side surface S6 of the third lens L3.

[0149] Exemplarily, the optical lens may further include auxiliary lenses L7 and L8 with no 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 aberrations. Protective glass may be used to protect the image sensor chip IMA located at the imaging surface S17.

[0150] The optical lens provided in this application can be used, for example, as an in-vehicle interior view lens. At this time, light from the object passes through each surface S1 to S16 in sequence and finally images onto the imaging surface S17 disposed on the second side, wherein an image sensor chip IMA is disposed at the imaging surface S17.

[0151] Table 1 shows the center radius of curvature R, thickness / distance d (it should be understood that the thickness d in the row where S1 is located is the center thickness d1 of the first lens L1, the thickness d in the row where S2 is located is the distance d2 between the second side surface of the first lens L1 and the first side surface of the second lens L2 on the optical axis, and so on), refractive index Nd, and Abbe number Vd of each lens of the optical lens of Embodiment 1.

[0152]

[0153] Table 1

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

[0155]

[0156] Where x is the distance vector from the vertex of the aspherical surface at a height h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the i-th order correction coefficient of the aspherical surface. Table 2 below gives the conic coefficient k and higher-order coefficients A4, A6, A8, A10, A12, A14 and A16 that can be used for each aspherical mirror 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 is for reference Figure 2 An optical lens according to Embodiment 2 of this application is described. Figure 2 A schematic diagram of the structure of an optical lens according to Embodiment 2 of this application is shown.

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

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

[0163] The optical lens may also include an aperture stop STO, which may be positioned between the second lens L2 and the third lens L3. For example, the aperture stop STO may be positioned close to the first side surface S6 of the third lens L3.

[0164] Exemplarily, the optical lens may further include auxiliary lenses L7 and L8 with no 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 aberrations. 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. At this time, light from the object passes through each surface S1 to S16 in sequence and finally images onto the imaging surface S17 disposed on the second side, wherein an image sensor chip IMA is disposed at the imaging surface S17.

[0166] Table 3 shows the central radius of curvature R, thickness / distance d, refractive index Nd, and Abbe number Vd of each lens in the optical lens of Example 2. Table 4 shows the conic coefficients and higher-order coefficients that can be used for each aspherical mirror in Example 2, wherein each aspherical surface shape 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 is for reference Figure 3 An optical lens according to Embodiment 3 of this application is described. Figure 3 A schematic diagram of the structure of an optical lens according to Embodiment 3 of this application is shown.

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

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

[0175] The optical lens may also include an aperture stop STO, which may be positioned between the second lens L2 and the third lens L3. For example, the aperture stop STO may be positioned close to the first side surface S6 of the third lens L3.

[0176] Exemplarily, the optical lens may further include auxiliary lenses L7 and L8 with no 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 aberrations. 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. At this time, light from the object passes through each surface S1 to S16 in sequence and finally images onto the imaging surface S17 disposed on the second side, wherein an image sensor chip IMA is disposed at the imaging surface S17.

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

[0179]

[0180] Table 5

[0181] 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

[0182] Table 6

[0183] Example 4

[0184] The following is for reference Figure 4 An optical lens according to Embodiment 4 of this application is described. Figure 4 A schematic diagram of the structure of an optical lens according to Embodiment 4 of this application is shown.

[0185] like Figure 4 As shown, the optical lens includes, in sequence from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6.

[0186] The first lens L1 is a meniscus lens with negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a meniscus lens with negative optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 is a biconvex lens with positive optical power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 is a meniscus lens with negative optical power, its first side surface S8 is convex, and its second side surface S9 is concave. The fifth lens L5 is a biconvex lens with positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 is a biconvex lens with positive optical power, its first side surface S11 is convex, and its second side surface S12 is convex.

[0187] The optical lens may also include an aperture stop STO, which may be positioned between the second lens L2 and the third lens L3. For example, the aperture stop STO may be positioned close to the first side surface S6 of the third lens L3.

[0188] Exemplarily, the optical lens may further include auxiliary lenses L7 and L8 with no 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 aberrations. Protective glass may be used to protect the image sensor chip IMA located at the imaging surface S17.

[0189] The optical lens provided in this application can be used, for example, as an in-vehicle interior view lens. At this time, light from the object passes through each surface S1 to S16 in sequence and finally images onto the imaging surface S17 disposed on the second side, wherein an image sensor chip IMA is disposed at the imaging surface S17.

[0190] Table 7 shows the central radius of curvature R, thickness / space d, refractive index Nd, and Abbe number Vd of each lens in the optical lens of Example 4. Table 8 shows the conic coefficients and higher-order coefficients that can be used for each aspherical mirror in Example 4, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0191]

[0192] Table 7

[0193] 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

[0194] Table 8

[0195] Example 5

[0196] The following is for reference Figure 5 An optical lens according to Embodiment 5 of this application is described. Figure 5A schematic diagram of the structure of an optical lens according to Embodiment 5 of this application is shown.

[0197] like Figure 5 As shown, the optical lens includes, in sequence from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6.

[0198] The first lens L1 is a meniscus lens with negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a meniscus lens with negative optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 is a biconvex lens with positive optical power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 is a biconvex lens with positive optical power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 is a biconcave lens with negative optical power, its first side surface S9 is concave, and its second side surface S10 is concave. The sixth lens L6 is a biconvex lens with positive optical power, its first side surface S11 is convex, and its second side surface S12 is convex.

[0199] The optical lens may also include an aperture stop STO, which may be positioned between the second lens L2 and the third lens L3. For example, the aperture stop STO may be positioned close to the first side surface S6 of the third lens L3.

[0200] Exemplarily, the optical lens may further include auxiliary lenses L7 and L8 with no 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 aberrations. Protective glass may be used to protect the image sensor chip IMA located at the imaging surface S17.

[0201] The optical lens provided in this application can be used, for example, as an in-vehicle interior view lens. At this time, light from the object passes through each surface S1 to S16 in sequence and finally images onto the imaging surface S17 disposed on the second side, wherein an image sensor chip IMA is disposed at the imaging surface S17.

[0202] Table 9 shows the central radius of curvature R, thickness / space d, refractive index Nd, and Abbe number Vd of each lens in the optical lens of Example 5. Table 10 shows the conic coefficients and higher-order coefficients that can be used for each aspherical mirror in Example 5, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0203]

[0204] Table 9

[0205] 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

[0206] Table 10

[0207] Example 6

[0208] The following is for reference Figure 6 An optical lens according to Embodiment 6 of this application is described. Figure 6 A schematic diagram of the structure of an optical lens according to Embodiment 6 of this application is shown.

[0209] like Figure 6 As shown, the optical lens includes, in sequence from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6.

[0210] The first lens L1 is a meniscus lens with negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a meniscus lens with negative optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 is a biconvex lens with positive optical power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 is a biconvex lens with positive optical power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 is a meniscus lens with negative optical power, its first side surface S9 is concave, and its second side surface S10 is convex. The sixth lens L6 is a biconvex lens with positive optical power, its first side surface S11 is convex, and its second side surface S12 is convex.

[0211] The optical lens may also include an aperture stop STO, which may be positioned between the second lens L2 and the third lens L3. For example, the aperture stop STO may be positioned close to the first side surface S6 of the third lens L3.

[0212] Exemplarily, the optical lens may further include auxiliary lenses L7 and L8 with no 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 aberrations. Protective glass may be used to protect the image sensor chip IMA located at the imaging surface S17.

[0213] The optical lens provided in this application can be used, for example, as an in-vehicle interior view lens. At this time, light from the object passes through each surface S1 to S16 in sequence and finally images onto the imaging surface S17 disposed on the second side, wherein an image sensor chip IMA is disposed at the imaging surface S17.

[0214] Table 11 shows the central radius of curvature R, thickness / space d, refractive index Nd, and Abbe number Vd of each lens in the optical lens of Example 6. Table 12 shows the conic coefficients and higher-order coefficients that can be used for each aspherical mirror in Example 6, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0215]

[0216] Table 11

[0217] 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

[0218] Table 12

[0219] Example 7

[0220] The following is for reference Figure 7 An optical lens according to Embodiment 7 of this application is described. Figure 7 A schematic diagram of the structure of an optical lens according to Embodiment 7 of this application is shown.

[0221] like Figure 7 As shown, the optical lens includes, in sequence from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6.

[0222] The first lens L1 is a meniscus lens with negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a meniscus lens with negative optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 is a biconvex lens with positive optical power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 is a biconvex lens with positive optical power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 is a meniscus lens with negative optical power, its first side surface S9 is concave, and its second side surface S10 is convex. The sixth lens L6 is a meniscus lens with positive optical power, its first side surface S11 is convex, and its second side surface S12 is concave.

[0223] The optical lens may also include an aperture stop STO, which may be positioned between the second lens L2 and the third lens L3. For example, the aperture stop STO may be positioned close to the first side surface S6 of the third lens L3.

[0224] Exemplarily, the optical lens may further include auxiliary lenses L7 and L8 with no 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 aberrations. Protective glass may be used to protect the image sensor chip IMA located at the imaging surface S17.

[0225] The optical lens provided in this application can be used, for example, as a vehicle-mounted lens. At this time, light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17 disposed on the second side, wherein an image sensor chip IMA is disposed at the imaging surface S17.

[0226] Table 13 shows the central radius of curvature R, thickness / space d, refractive index Nd, and Abbe number Vd of each lens in the optical lens of Example 7. Table 14 shows the conic coefficients and higher-order coefficients that can be used for each aspherical mirror in Example 7, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0227]

[0228] Table 13

[0229] Face number k A4 A6 A8 A10 A12 A14 A16 S3 -0.9316 -3.5415E-03 3.7029E-03 -7.2347E-04 1.6313E-00 4.8256E-05 -2.92E-05 3.37E-06 S4 -13.5187 -3.4270E-02 1.8922E-02 -4.9977E-03 7.9183E-04 6.7351E-05 -4.55E-05 5.46E-06 S6 -8.8830 -1.3712E-04 1.1302E-02 -2.1918E-02 3.1134E-02 -2.3559E-02 8.8578E-03 -1.3071E-03 S7 -12.7408 7.5399E-03 -2.6239E-03 -3.0471E-04 7.7553E-00 -1.9231E-04 3.3452E-06 2.4622E-06 S8 37.2711 2.5957E-02 -6.3636E-03 -2.0490E-04 8.2517E-00 -2.0218E-04 2.4855E-06 1.7586E-06 S9 -2.6825 -6.3313E-02 -7.4591E-04 9.2936E-03 -2.5464E-03 -2.4343E-04 2.3140E-04 -2.7001E-05 S10 39.1258 1.9953E-02 -4.9806E-03 1.0564E-03 -1.1040E-05 1.9878E-05 -1.2596E-05 1.1697E-06 S11 -6.4832 1.1429E-02 -5.9346E-03 9.4554E-00 1.1656E-05 -5.9514E-06 -5.7097E-07 -1.9209E-08 S12 70.3739 -7.1571E-04 -7.9766E-04 1.5497E-04 -6.7714E-07 -7.9538E-06 2.8860E-06 -2.7532E-07

[0230] Table 14

[0231] Example 8

[0232] The following is for reference Figure 8 An optical lens according to Embodiment 8 of this application is described. Figure 8 A schematic diagram of the structure of an optical lens according to Embodiment 8 of this application is shown.

[0233] like Figure 8 As shown, the optical lens includes, in sequence from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6.

[0234] The first lens L1 is a meniscus lens with negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 is a meniscus lens with negative optical power, its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 is a biconvex lens with positive optical power, its first side surface S6 is convex, and its second side surface S7 is convex. The fourth lens L4 is a biconvex lens with positive optical power, its first side surface S8 is convex, and its second side surface S9 is convex. The fifth lens L5 is a meniscus lens with negative optical power, its first side surface S9 is concave, and its second side surface S10 is convex. The sixth lens L6 is a meniscus lens with positive optical power, its first side surface S11 is convex, and its second side surface S12 is concave.

[0235] The optical lens may also include an aperture stop STO, which may be positioned between the second lens L2 and the third lens L3. For example, the aperture stop STO may be positioned close to the first side surface S6 of the third lens L3.

[0236] Exemplarily, the optical lens may further include auxiliary lenses L7 and L8 with no 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 aberrations. Protective glass may be used to protect the image sensor chip IMA located at the imaging surface S17.

[0237] The optical lens provided in this application can be used, for example, as an in-vehicle interior view lens. At this time, light from the object passes through each surface S1 to S16 in sequence and finally images onto the imaging surface S17 disposed on the second side, wherein an image sensor chip IMA is disposed at the imaging surface S17.

[0238] Table 15 shows the central radius of curvature R, thickness / space d, refractive index Nd, and Abbe number Vd of each lens in the optical lens of Example 8. Table 16 shows the conic coefficients and higher-order coefficients that can be used for each aspherical mirror in Example 8, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0239]

[0240] Table 15

[0241] 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

[0242] Table 16

[0243] In summary, Examples 1 to 8 satisfy the relationships shown in Tables 17-1 and 17-2 below. In Tables 17-1 and 17-2, 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 (°).

[0244] Conditional Implementation Examples Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 TTL 14.5250 14.5103 14.2469 14.2251 14.5832 14.4911 14.5412 14.5290 BFL 3.3530 3.3919 3.6328 3.6110 3.5519 3.3917 3.3153 2.8825 H 6.1800 6.2180 6.1700 5.3380 6.2280 6.2820 6.2840 7.1340 D 6.1359 6.1723 6.0745 5.8490 6.4436 6.1937 5.9374 5.9554 FOV 120.0000 120.0000 120.0000 120.0000 120.0000 120.0000 120.0000 120.0000 θ 2.0944 2.0944 2.0944 2.0944 2.0944 2.0944 2.0944 2.0944 F 2.9835 2.9943 2.9663 2.7190 2.9680 2.9699 2.8857 3.0807 Fl -4.7399 -4.7068 -4.6024 -3.4236 -5.0626 -4.9105 -4.2772 -6.1603 F2 -30.0474 -28.9807 -24.9124 -24.9124 -77.8003 -66.2806 -43.2254 -281.6289 F3 3.9214 3.9335 4.2565 4.2182 4.7411 5.1414 4.6277 4.6803 F4 -2.5120 -2.6050 -2.9939 -2.9939 3.3863 2.9896 2.9661 3.0483 F5 2.5551 2.5708 2.8582 2.8582 -2.9183 -3.5357 -2.9551 -3.1436 F6 -71.3413 -40.8156 18.0835 17.3876 9.7098 17.0436 14.6280 25.2511 R 1.5747 1.6259 1.6502 1.6502 -1.9449 -1.6910 -1.7109 -1.7755 φ 4.2483 4.5745 4.3269 4.2372 3.4785 3.8016 4.1763 4.0601 TTL / H / FOV 0.0196 0.0194 0.0192 0.0222 0.0195 0.0192 0.0193 0.0170 TTL / H / tan(FOV) -1.3570 -1.3473 -1.3331 -1.5386 -1.3519 -1.3318 -1.3360 -1.1758 R1 / R2 2.8594 2.8656 3.2887 4.0625 3.3562 3.1980 2.7276 2.1656

[0245] Table 17-1

[0246] Conditional Implementation Examples Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 D / H / FOV 0.0083 0.0083 0.0082 0.0091 0.0086 0.0082 0.0079 0.0070 D / H / tan(FOV) -0.5732 -0.5731 -0.5684 -0.6326 -0.5973 -0.5692 -0.5455 -0.4820 BFL / TTL 0.2308 0.2338 0.2550 0.2538 0.2436 0.2341 0.2280 0.1984 |F4 / F5| 0.9832 1.0133 1.0475 1.0475 1.1604 0.8456 1.0037 0.9697 (FOV×F) / H 57.9313 57.7864 57.6904 61.1247 57.1871 56.7318 55.1055 51.8195 |R8 / R9| 39.0140 34.0555 7.8593 7.8593 10.3802 11.2283 8.4198 7.8705 d4 / TTL 0.0241 0.0276 0.0281 0.0281 0.0411 0.0289 0.0333 0.0304 |arctan(1 / K(L1S9)| 48.1480 48.5074 47.4789 46.6715 45.9877 49.8633 44.8200 43.3339 TTL / F 4.8685 4.8460 4.8030 5.2317 4.9135 4.8793 5.0391 4.7162 |F / R3|+|F / R4| 1.5449 1.5540 1.7606 1.6139 2.0370 2.0363 1.8310 1.9698 (d7×BFL) / (d7+BFL) 0.4821 0.4890 0.3824 0.3822 0.0895 0.1115 0.0971 0.0966 (R11-R12) / (R11+R12) 0.1267 0.2318 -1.2410 -1.3631 -1.8836 -2.0832 -0.5977 -0.5307 R1 / (R2+d2) 1.4274 1.4296 1.6099 1.7754 1.7211 1.5724 1.4377 1.2477 |F2 / F| 10.0713 9.6786 8.3986 9.1623 26.2130 22.3174 14.9792 91.4181 |F6 / F| 23.9123 13.6311 6.0964 6.3948 3.2715 5.7388 5.0691 8.1966 TTL / H / θ 1.1222 1.1142 1.1025 1.2724 1.1180 1.1014 1.1049 0.9724 D / H / θ 0.4741 0.4740 0.4701 0.5232 0.4940 0.4708 0.4511 0.3986 F1 / d1 -7.2922 -7.2413 -7.0806 -5.2671 -7.7887 -7.5547 -6.5803 -9.4774 |R| / (Φ / 2) 0.7413 0.7109 0.7628 0.7789 1.1183 0.8896 0.8193 0.8746 F2 / R4 6.3487 6.1213 6.0210 6.0210 23.5328 20.0575 11.6298 80.7165 F4×F5 / F -2.1513 -2.2366 -2.8848 -3.1471 -3.3295 -3.5591 -3.0374 -3.1105

[0247] Table 17-2

[0248] This application also provides an electronic device that may include an optical lens according to the above embodiments of this application and an imaging element for converting an optical image formed by the optical lens into an electrical signal. The electronic device may be a stand-alone electronic device, such as a rangefinder camera, or an imaging module integrated into a rangefinder device. Furthermore, the electronic device may also be a stand-alone imaging device, such as an in-vehicle camera, or an imaging module integrated into a driver assistance system, such as a vehicle-mounted camera.

[0249] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An optical lens, characterized in that, Along the optical axis, from the first side to the second side, the following are included in sequence: A first lens with negative optical power has a first side surface that is convex and a second side surface that is concave. A second lens with negative optical power has a concave first side and a convex second side. A third lens with positive optical power has a first convex side and a second convex side. The fourth lens with negative optical power has a convex first side and a concave second side. A fifth lens with positive optical power, wherein its first side surface is convex and its second side surface is convex; and The sixth lens has a convex first side surface; The optical lens contains six lenses with optical power. The optical lens satisfies: 40≤(FOV×F) / H≤61.1247 and -5.5≤F4×F5 / F≤-1; FOV is the maximum field of view of the optical lens, F is the total effective focal length of the optical lens, H is the image height corresponding to the maximum field of view, F4 is the effective focal length of the fourth lens, and F5 is the effective focal length of the fifth lens.

2. The optical lens according to claim 1, characterized in that, The sixth lens has negative optical power, and its second side surface is concave.

3. The optical lens according to claim 1, characterized in that, The sixth lens has positive optical power, and its second side surface is convex.

4. The optical lens according to claim 1, characterized in that, The fourth lens and the fifth lens form a cemented lens.

5. The optical lens according to any one of claims 1-4, characterized in that, The central curvature radius R11 of the first side surface of the sixth lens and the central curvature radius R12 of the second side surface of the sixth lens satisfy: -3≤(R11-R12) / (R11+R12)≤0.

5.

6. The optical lens according to any one of claims 1-4, characterized in that, The distance d4 between the second lens and the aperture on the optical axis and the total length TTL of the optical lens satisfy the following condition: 0.0241≤d4 / TTL≤0.

1.

7. The optical lens according to any one of claims 1-4, characterized in that, 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 condition: 0.0192 ≤ TTL / H / FOV ≤ 0.

04.

8. The optical lens according to any one of claims 1-4, characterized in that, 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 condition: -1.5386 ≤ TTL / H / tan(FOV) ≤ 2.

5.

9. The optical lens according to any one of claims 1-4, characterized in that, The central curvature radius R1 of the first side surface of the first lens and the central curvature radius R2 of the second side surface of the first lens satisfy: 2≤R1 / R2≤5.

10. The optical lens according to any one of claims 1-4, characterized in that, The maximum field of view (FOV) of the optical lens, the maximum 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 condition: 0.0082 ≤ D / H / FOV ≤ 0.02.

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