Optical lens and electronic device

Abstract

The application provides an optical lens and an electronic device. The optical lens comprises: a first lens, the first lens having negative optical power, a first side of the first lens being a convex surface, and a second side of the first lens being a concave surface; a second lens, the second lens having positive optical power, a first side of the second lens being a convex surface, and a second side of the second lens being a convex surface; a third lens, the third lens having negative optical power, a second side of the third lens being a concave surface; a fourth lens, the fourth lens having positive optical power, a first side of the fourth lens being a convex surface, and a second side of the fourth lens being a convex surface; a fifth lens, the fifth lens having positive optical power, a first side of the fifth lens being a convex surface; and a sixth lens, the sixth lens having positive optical power, a first side of the sixth lens being a convex surface. The application solves at least one of the problems of low relative luminance, poor resolving power, strong ghost image and small angular resolution in the prior art.

Description

Technical Field

[0001] This invention relates to the field of optical imaging equipment technology, and more specifically, to an optical lens and an electronic device. Background Technology

[0002] As the applications of optical lenses become increasingly diverse, users' demands for them are also rising. Existing optical lenses have limited light transmission capabilities and low relative illumination, making it difficult to guarantee resolution in low-light conditions. To improve resolution, the number of lenses is usually increased, but this also increases the difficulty of controlling light, significantly raising the risk of ghosting.

[0003] With the development of automotive safety, HUDs (Head-Up Displays) are widely used in automotive safety. Because HUDs can display instrument, navigation, and safety information on the windshield, drivers can access this information directly without looking down. Optical lenses are used as imaging units in HUD optical systems. However, as HUD applications expand, existing optical lenses, especially projection lenses, have relatively low angular resolution, failing to meet the demands of HUD usage.

[0004] In other words, existing optical lenses suffer from at least one of the following problems: low relative illumination, poor resolution, strong ghosting, and low angular resolution. Summary of the Invention

[0005] The main objective of this invention is to provide an optical lens and electronic device to solve at least one of the problems of low relative illumination, poor resolution, strong ghosting, and low angular resolution in existing optical lenses.

[0006] To achieve the above objectives, according to one aspect of the present invention, an optical lens is provided, comprising: a first lens having negative optical power, a first side surface of the first lens being convex, and a second side surface of the first lens being concave; a second lens having positive optical power, a first side surface of the second lens being convex, and a second side surface of the second lens being convex; a third lens having negative optical power, a second side surface of the third lens being concave; a fourth lens having positive optical power, a first side surface of the fourth lens being convex, and a second side surface of the fourth lens being convex; a fifth lens having positive optical power, a first side surface of the fifth lens being convex; and a sixth lens having positive optical power, a first side surface of the sixth lens being convex.

[0007] Furthermore, the first side surface of the third lens is convex.

[0008] Furthermore, the first side surface of the third lens is concave.

[0009] Furthermore, the second side surface of the fifth lens is convex.

[0010] Furthermore, the second side surface of the fifth lens is concave.

[0011] Furthermore, the second side surface of the sixth lens is convex.

[0012] Furthermore, the second side surface of the sixth lens is concave.

[0013] Furthermore, the first lens is an aspherical lens.

[0014] Furthermore, the third and fourth lenses are cemented together to form a cemented lens.

[0015] Furthermore, the optical lens also includes an aperture stop, which is positioned between the second lens and the third lens.

[0016] Furthermore, the thickness d34 of the cemented lens formed by the third and fourth lenses and the total length TTL of the optical lens satisfy the following condition: 0.12≤d34 / TTL≤0.2.

[0017] Furthermore, the focal length F5 of the fifth lens and the focal length F6 of the sixth lens satisfy the following condition: |F5 / F6|≥0.55.

[0018] Furthermore, the air gap d12 between the first lens and the second lens and the total length TTL of the optical lens satisfy the following condition: 0.13≤d12 / TTL≤0.23.

[0019] Furthermore, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radians θ of the maximum field of view of the optical lens satisfy the following relationship: 0.108 ≤ |(HF)| θ) / (F θ)|≤0.72.

[0020] Furthermore, the radius of curvature R2 of the second side of the first lens and the maximum half-aperture D2 of the second side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: R2 / D2≤1.

[0021] Furthermore, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian θ of the maximum field of view of the optical lens satisfy the following relationship: (H / 2) / (F tan(θ / 2))≥0.67.

[0022] Furthermore, the maximum aperture D of the first side 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 FOV of the optical lens satisfy the following condition: 0.02≤D / H / FOV≤0.04.

[0023] Furthermore, the optical back focal length (BFL) and the lens group length (TL) of the optical lens satisfy the following condition: 0.17 ≤ BFL / TL ≤ 0.44.

[0024] Furthermore, the radius of curvature R1 of the first side surface of the first lens, the radius of curvature R2 of the second side surface of the first lens, the maximum half-aperture D1 of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, and the maximum half-aperture D2 of the second side surface of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: 1.5≤(R1 / D1) / (R2 / D2)≤14.6.

[0025] Furthermore, the total length (TTL) of the optical lens and the maximum effective aperture (DMAX) of the optical lens must satisfy the following condition: TTL / DMAX ≥ 1.2.

[0026] Furthermore, the focal length F34 of the cemented lens formed by the third and fourth lenses and the overall focal length F of the optical lens satisfy the following relationship: |F34 / F|≥2.8.

[0027] Furthermore, the sag9 of the first side of the fifth lens and the sag10 of the second side of the fifth lens satisfy the following condition: 0.4≤|sag9 / sag10|≤6.5.

[0028] Furthermore, the focal length F1 of the first lens, the radius of curvature R2 of the second side surface of the first lens, the focal length F2 of the second lens, and the radius of curvature R3 of the first side surface of the second lens satisfy the following condition: -4.5≤F1 / R2+F2 / R3≤-0.05.

[0029] Furthermore, the sag1 of the first side surface of the first lens and the sag2 of the second side surface of the first lens satisfy the following condition: 0.01≤|sag1 / sag2|≤1.5.

[0030] Furthermore, the air gap d45 between the second side surface of the second lens and the first side surface of the third lens, and the total length TTL of the optical lens satisfy the following condition: 0.01≤d45 / TTL≤0.77.

[0031] Furthermore, the focal length F1 of the first lens and the total focal length F of the optical lens satisfy the following condition: F1 / F ≥ -4.25.

[0032] Furthermore, the focal length F5 of the fifth lens and the total focal length F of the optical lens satisfy the following condition: 1.2≤F5 / F≤17.

[0033] Furthermore, the focal length F6 of the sixth lens and the total focal length F of the optical lens satisfy the following condition: 1.6≤F6 / F≤18.

[0034] According to another aspect of the present invention, an optical lens is provided, comprising: a first lens having negative optical power; a second lens having positive optical power; a third lens having negative optical power; a fourth lens having positive optical power; a fifth lens having positive optical power; and a sixth lens having positive optical power; wherein the focal length F5 of the fifth lens and the total focal length F of the optical lens satisfy the following condition: 1.2 ≤ F5 / F ≤ 17.

[0035] Furthermore, the first side surface of the first lens is convex, and the second side surface of the first lens is concave.

[0036] Furthermore, the first side surface of the second lens is convex, and the second side surface of the second lens is also convex.

[0037] Furthermore, the first side surface of the third lens is convex, and the second side surface of the third lens is concave.

[0038] Furthermore, the first side surface of the third lens is concave, and the second side surface of the third lens is also concave.

[0039] Furthermore, the first side surface of the fourth lens is convex, and the second side surface of the fourth lens is also convex.

[0040] Furthermore, the first side surface of the fifth lens is convex, and the second side surface of the fifth lens is also convex.

[0041] Furthermore, the first side surface of the fifth lens is convex, and the second side surface of the fifth lens is concave.

[0042] Furthermore, the first side surface of the sixth lens is convex, and the second side surface of the sixth lens is also convex.

[0043] Furthermore, the first side surface of the sixth lens is convex, and the second side surface of the sixth lens is concave.

[0044] Furthermore, the first lens is an aspherical lens.

[0045] Furthermore, the third and fourth lenses are cemented together to form a cemented lens.

[0046] Furthermore, the optical lens also includes an aperture stop, which is positioned between the second lens and the third lens.

[0047] Furthermore, the thickness d34 of the cemented lens formed by the third and fourth lenses and the total length TTL of the optical lens satisfy the following condition: 0.12≤d34 / TTL≤0.2.

[0048] Furthermore, the focal length F5 of the fifth lens and the focal length F6 of the sixth lens satisfy the following condition: |F5 / F6|≥0.55.

[0049] Furthermore, the air gap d12 between the first lens and the second lens and the total length TTL of the optical lens satisfy the following condition: 0.13≤d12 / TTL≤0.23.

[0050] Furthermore, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radians θ of the maximum field of view of the optical lens satisfy the following relationship: 0.108 ≤ |(HF)| θ) / (F θ)|≤0.72.

[0051] Furthermore, the radius of curvature R2 of the second side of the first lens and the maximum half-aperture D2 of the second side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: R2 / D2≤1.

[0052] Furthermore, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian θ of the maximum field of view of the optical lens satisfy the following relationship: (H / 2) / (F tan(θ / 2))≥0.67.

[0053] Furthermore, the maximum aperture D of the first side 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 FOV of the optical lens satisfy the following condition: 0.02≤D / H / FOV≤0.04.

[0054] Furthermore, the optical back focal length (BFL) and the lens group length (TL) of the optical lens satisfy the following condition: 0.17 ≤ BFL / TL ≤ 0.44.

[0055] Furthermore, the radius of curvature R1 of the first side surface of the first lens, the radius of curvature R2 of the second side surface of the first lens, the maximum half-aperture D1 of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, and the maximum half-aperture D2 of the second side surface of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: 1.5≤(R1 / D1) / (R2 / D2)≤14.6.

[0056] Furthermore, the total length (TTL) of the optical lens and the maximum effective aperture (DMAX) of the optical lens must satisfy the following condition: TTL / DMAX ≥ 1.2.

[0057] Furthermore, the focal length F34 of the cemented lens formed by the third and fourth lenses and the overall focal length F of the optical lens satisfy the following relationship: |F34 / F|≥2.8.

[0058] Furthermore, the sag9 of the first side of the fifth lens and the sag10 of the second side of the fifth lens satisfy the following condition: 0.4≤|sag9 / sag10|≤6.5.

[0059] Furthermore, the focal length F1 of the first lens, the radius of curvature R2 of the second side surface of the first lens, the focal length F2 of the second lens, and the radius of curvature R3 of the first side surface of the second lens satisfy the following condition: -4.5≤F1 / R2+F2 / R3≤-0.05.

[0060] Furthermore, the sag1 of the first side surface of the first lens and the sag2 of the second side surface of the first lens satisfy the following condition: 0.01≤|sag1 / sag2|≤1.5.

[0061] Furthermore, the air gap d45 between the second side surface of the second lens and the first side surface of the third lens, and the total length TTL of the optical lens satisfy the following condition: 0.01≤d45 / TTL≤0.77.

[0062] Furthermore, the focal length F1 of the first lens and the total focal length F of the optical lens satisfy the following condition: F1 / F ≥ -4.25.

[0063] Furthermore, the focal length F6 of the sixth lens and the total focal length F of the optical lens satisfy the following condition: 1.6≤F6 / F≤18.

[0064] According to another aspect of the present invention, an electronic device is provided, comprising the aforementioned optical lens and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

[0065] The aforementioned technical solution, by setting the first lens to have negative optical power, can diverge light and adjust the angle of the light, allowing the light path to smoothly transition to the rear, which is beneficial for achieving a ghosting-free effect. Designing the first side of the first lens as convex can reduce the interference of water droplets on image quality in rainy applications. Designing the second side of the first lens as concave can collect as much light as possible from a large field of view into the rear optical system, allowing the diverged light to smoothly enter the rear, further ensuring a smooth transition of the light path.

[0066] By setting the second lens to have positive optical power, it has a converging effect on light, effectively converging central and peripheral rays from various fields of view, thus increasing the illumination of the optical lens. Designing the first side of the second lens as convex allows it to match the second side of the first lens, facilitating a smoother light transition and altering the trajectory of peripheral rays. This reduces the front aperture of the optical lens, thereby reducing its size and enabling miniaturization and lower production costs. Designing the second side of the second lens as convex, making it a biconvex shape, reduces light refraction between the first and second sides of the lens, thus reducing the sensitivity of the optical lens.

[0067] By setting the third lens to have negative optical power, the light is further diverged, and the light refraction angle is adjusted. Optionally, the first side of the third lens is convex and the second side is concave, so that when the light reaches the second side of the third lens, the light deflection is smaller, which helps the light to be more concentrated when it reaches the imaging plane, correcting edge field aberrations and achieving high resolution. At the same time, the light energy loss is smaller, which helps to reduce the sensitivity of the third lens. Of course, the first side of the third lens can also be concave, so that the light entering the third lens has a significant light reversal, changing the trend of large-angle light rays, which is conducive to achieving high resolution.

[0068] By setting the fourth lens to have positive optical power, it is beneficial to converge light. Furthermore, the first side of the fourth lens is convex, which significantly alters the light path. This allows for miniaturization of the optical lens while maintaining the same aperture on the first side of the fourth lens. Additionally, the positive optical power of the fourth lens can work in conjunction with the negative optical power of the third lens to correct chromatic aberration and improve image quality.

[0069] By setting the fifth lens to have positive optical power, it has a converging effect on light. Optionally, the first side of the fifth lens is convex, which reduces the upward tendency of light rays after passing through the fourth lens, allowing the light rays to be incident approximately perpendicularly on the first side of the sixth lens after passing through the fifth lens. Setting the second side of the fifth lens to be convex as well, making the shape of the fifth lens biconvex, helps to improve the resolving power of the optical lens. Of course, the first side of the fifth lens can also be convex, and the second side of the fifth lens can be concave. Adjusting the shape of the fifth lens to convex and concave can adjust the refraction angle of light and reduce the sensitivity of the optical lens.

[0070] By setting the sixth lens to have positive optical power and a gently sloping shape, the light transition is smoother, and the light is incident almost perpendicularly to the second side of the sixth lens, resulting in less aberration and improving the resolving power of the optical lens. Furthermore, the positive optical power of the sixth lens can be matched with the negative optical power of the fifth lens, which is beneficial for correcting chromatic aberration and improving image quality. Optionally, both the first and second sides of the sixth lens can be convex, making the sixth lens biconvex. This allows the light to converge effectively and smoothly at the final point, ensuring a stable arrival at the imaging plane. It also reduces light deflection at the first and second sides of the sixth lens, thus reducing the sensitivity of the optical lens. Alternatively, the first side of the sixth lens can be convex, and the second side concave. This allows the light to travel a longer optical path to the imaging plane after passing through the sixth lens, which is beneficial for achieving a small CRA (principal angle). Attached Figure Description

[0071] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0072] Figure 1 A cross-sectional view of an optical lens according to Example 1 of the present invention is shown;

[0073] Figure 2 A cross-sectional view of the optical lens of Example 2 of the present invention is shown;

[0074] Figure 3 A cross-sectional view of the optical lens of Example 3 of the present invention is shown;

[0075] Figure 4 A cross-sectional view of the optical lens of Example 4 of the present invention is shown;

[0076] Figure 5 A cross-sectional view of the optical lens of Example 5 of the present invention is shown;

[0077] Figure 6 A cross-sectional view of the optical lens of Example Six of the present invention is shown;

[0078] Figure 7 A cross-sectional view of the optical lens of Example Seven of the present invention is shown;

[0079] Figure 8 A cross-sectional view of the optical lens of Example 8 of the present invention is shown.

[0080] The above figures include the following reference numerals:

[0081] STO, Aperture Stop; L1, First Lens; S1, First Side of First Lens; S2, Second Side of First Lens; L2, Second Lens; S3, First Side of Second Lens; S4, Second Side of Second Lens; L3, Third Lens; S6, First Side of Third Lens; S7, Second Side of Third Lens (First Side of Fourth Lens); L4, Fourth Lens; S8, Second Side of Fourth Lens; L5, Fifth Lens; S9, First Side of Fifth Lens; S10, Second Side of Fifth Lens; L6, Sixth Lens; S11, First Side of Sixth Lens; S12, Second Side of Sixth Lens; S13, First Side of Protective Glass; S14, Second Side of Protective Glass; IMA, Imaging Surface. Detailed Implementation

[0082] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0083] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0084] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0085] 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.

[0086] 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 drawn strictly to scale.

[0087] In this paper, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the location of the convexity is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the location of the concaveness is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object side is called the first side surface of the lens, and the surface of each lens closest to the image side is called the second side surface of the lens. The surface shape in the paraxial region can be determined according to the judgment method commonly used by those knowledgeable in the field, using the R value (R refers to the radius of curvature of the paraxial region, usually the R value in the lens database of optical software) to determine concavity or convexity. For the first side surface, when the R value is positive, it is determined to be convex, and when the R value is negative, it is determined to be concave; for the second side surface, when the R value is positive, it is determined to be concave, and when the R value is negative, it is determined to be convex.

[0088] This application generally protects ordinary optical lenses. In the attached drawings, the left side is the object side and the right side is the image side. That is, the first side is the object side and the second side is the image side.

[0089] In an exemplary embodiment, the optical lens provided in this application can be used, for example, as a vehicle-mounted lens. Light rays from the object side can form an image from the image side.

[0090] When the optical lens of this application is applied to a projection lens or a radar transmitting lens, the left side is the imaging side and the right side is the image source side. In an exemplary embodiment, the optical lens provided in this application can be used as, for example, a projection lens or a lidar transmitting lens. In this case, the image side of the optical lens can be the image source side, and the object side can be the imaging side. Light from the image source side can be imaged on the imaging side. The imaging surface of the optical lens is the image source surface.

[0091] In order to solve at least one of the problems of low relative illumination, poor resolution, strong ghosting, and low angular resolution in existing optical lenses, the present invention provides an optical lens and an electronic device.

[0092] Example 1

[0093] like Figures 1 to 8 As shown, the optical lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The first lens has negative optical power, a first side surface of the first lens is convex, and a second side surface of the first lens is concave. The second lens has positive optical power, a first side surface of the second lens is convex, and a second side surface of the second lens is convex. The third lens has negative optical power, and a second side surface of the third lens is concave. The fourth lens has positive optical power, a first side surface of the fourth lens is convex, and a second side surface of the fourth lens is convex. The fifth lens has positive optical power, a first side surface of the fifth lens is convex, and the sixth lens has positive optical power, a first side surface of the sixth lens is convex.

[0094] By setting the first lens to have a negative optical power, light can be diverged and its angle adjusted, allowing the light path to smoothly transition to the rear, thus achieving a ghosting-free effect. Designing the first side of the first lens as convex reduces the interference of water droplets on image quality in rainy applications. Designing the second side of the first lens as concave allows for the collection of light from a large field of view into the rear optical system, ensuring that diverged light enters smoothly and further smoothing the light path transition.

[0095] By setting the second lens to have positive optical power, it has a converging effect on light, effectively converging central and peripheral rays from various fields of view, thus increasing the illumination of the optical lens. Designing the first side of the second lens as convex allows it to match the second side of the first lens, facilitating a smoother light transition and altering the trajectory of peripheral rays. This reduces the front aperture of the optical lens, thereby reducing its size and enabling miniaturization and lower production costs. Designing the second side of the second lens as convex, making it a biconvex shape, reduces light refraction between the first and second sides of the lens, thus reducing the sensitivity of the optical lens.

[0096] By setting the third lens to have negative optical power, the light is further diverged, and the light refraction angle is adjusted. Optionally, the first side of the third lens is convex and the second side is concave, so that when the light reaches the second side of the third lens, the light deflection is small, which helps the light to be more concentrated when it reaches the imaging plane, corrects edge field aberrations, achieves high resolution, and at the same time, the light energy loss is small, which helps to reduce the sensitivity of the third lens.

[0097] Of course, the first side of the third lens can also be concave, so that the light entering the third lens has a significant light reversal, which changes the trend of large-angle light and is conducive to achieving high resolution.

[0098] By setting the fourth lens to have positive optical power, it is beneficial to converge light. Furthermore, the first side of the fourth lens is convex, which significantly alters the light path. This allows for miniaturization of the optical lens while maintaining the same aperture on the first side of the fourth lens. Additionally, the positive optical power of the fourth lens can work in conjunction with the negative optical power of the third lens to correct chromatic aberration and improve image quality.

[0099] By setting the fifth lens to have positive optical power, it has a converging effect on light. Optionally, the first side of the fifth lens is convex, which reduces the upward tendency of light rays after passing through the fourth lens, allowing the light rays to be incident approximately perpendicularly on the first side of the sixth lens after passing through the fifth lens. Setting the second side of the fifth lens to be convex as well, adjusting the shape of the fifth lens to be biconvex, helps to improve the resolving power of the optical lens.

[0100] Alternatively, the first side of the fifth lens could be convex, and the second side concave. Adjusting the shape of the fifth lens to be convex and concave can adjust the angle of light refraction and reduce the sensitivity of the optical lens.

[0101] By setting the sixth lens to have positive optical power and a gently sloping shape, the light transition is smoother, and the light is incident almost perpendicularly on the second side of the sixth lens, resulting in less aberration and improving the resolving power of the optical lens. Furthermore, the positive optical power of the sixth lens can be matched with the negative optical power of the fifth lens, which is beneficial for correcting chromatic aberration and improving image quality.

[0102] Optionally, the first side of the sixth lens is set as a convex surface, and the second side of the sixth lens is also a convex surface, that is, the sixth lens is a biconvex shape. This allows the light to converge effectively and smoothly at the end, so that the light reaches the imaging surface smoothly. At the same time, it can reduce the deflection of the light on the first and second sides of the sixth lens, which helps to reduce the sensitivity of the optical lens.

[0103] Of course, the first side of the sixth lens can also be convex, and the second side of the sixth lens can be concave. Light rays passing through the sixth lens reach the imaging plane with a longer optical path, which is beneficial for achieving a small CRA (principal angle).

[0104] In this embodiment, the first lens is an aspherical lens, which is beneficial for improving field curvature and astigmatism, and enhancing resolving power.

[0105] In this embodiment, the third and fourth lenses are cemented together to form a cemented lens. The use of a cemented lens effectively eliminates the effect of ghosting on the optical lens and corrects chromatic aberration, allowing the optical lens to maintain high resolution while eliminating ghosting. Simultaneously, it reduces light energy loss caused by light reflection between the third and fourth lenses, enhances the ability to control light, and allows more light to enter the rear optical system, improving relative illumination. Furthermore, when the cemented lens is a negative lens, it has a higher refractive index than a positive lens, allowing light to converge effectively and smoothly, facilitating stable light delivery to the imaging plane, and reducing the overall weight and cost of the optical lens.

[0106] In this embodiment, the optical lens also includes an aperture stop, which is positioned between the second lens and the third lens. Placing the aperture stop in the middle position helps to effectively converge light, reduce the lens apertures at both ends of the optical lens, and reduce the adjustment process.

[0107] In this embodiment, the thickness d34 of the cemented lens formed by the third and fourth lenses and the total length TTL of the optical lens satisfy the following condition: 0.12 ≤ d34 / TTL ≤ 0.2. By limiting d34 / TTL within a reasonable range, the thickness of the cemented lens can be increased, and the length of the optical lens can be effectively controlled, enhancing the ability to control light and allowing more light to enter the rear optical system, thereby improving relative illumination. Preferably, 0.13 ≤ d34 / TTL ≤ 0.18.

[0108] In this embodiment, the focal length F5 of the fifth lens and the focal length F6 of the sixth lens satisfy the condition: |F5 / F6|≥0.55. By limiting |F5 / F6| to a reasonable range, the focal lengths of the fifth and sixth lenses are similar, which also makes their light-reflecting abilities similar, contributing to a smooth light transition and improving image quality. Preferably, |F5 / F6|≥0.7.

[0109] In this embodiment, the air gap d12 between the first and second lenses and the total length TTL of the optical lens satisfy the following condition: 0.13 ≤ d12 / TTL ≤ 0.23. By limiting d12 / TTL within a reasonable range, the distance between the first and second lenses can be controlled, which helps to reduce the reflection of light by the lenses and achieve a ghosting-free effect. It also facilitates a reduction in the rear aperture, promoting a smooth light transition. Furthermore, it avoids excessive air gap between the first and second lenses, which could reduce resolving power and ensure image quality. Preferably, 0.15 ≤ d12 / TTL ≤ 0.21.

[0110] In this embodiment, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radians θ of the maximum field of view of the optical lens satisfy the following relationship: 0.108 ≤ |(HF)| θ) / (F θ)|≤0.72. By |(HF) θ) / (F When θ is limited to a reasonable range, it ensures that the focal length of the optical lens is increased while maintaining the same field of view and imaging plane size, thus emphasizing the imaging effect in the central area of ​​the imaging plane. Preferably, 0.108 ≤ |(HF)| θ) / (F θ)|≤0.55.

[0111] In this embodiment, the radius of curvature R2 of the second side surface of the first lens and the maximum half-aperture D2 of the second side surface of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: R2 / D2≤1. By limiting R2 / D2 within a reasonable range, it is beneficial to reduce the height of light entering the second lens, thereby achieving a small aperture for the second lens while also considering its manufacturability. Preferably, R2 / D2≤0.85.

[0112] In this embodiment, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian θ of the maximum field of view of the optical lens satisfy the following relationship: (H / 2) / (F tan(θ / 2))≥0.67. By using (H / 2) / (F By limiting tan(θ / 2) within a reasonable range, the ratio of the actual image height to the ideal image height can be set appropriately, achieving large angular resolution and resulting in better imaging effects. Preferably, (H / 2) / (F tan(θ / 2))≥0.88.

[0113] In this embodiment, the maximum aperture D of the first side 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 (FOV) of the optical lens satisfy the following condition: 0.02 ≤ D / H / FOV ≤ 0.04. By limiting D / H / FOV within a reasonable range, the front aperture of the optical lens can be reduced, which is beneficial for miniaturization. Preferably, 0.025 ≤ D / H / FOV ≤ 0.034.

[0114] In this embodiment, the optical back focal length (BFL) and the lens group length (TL) of the optical lens satisfy the following relationship: 0.17 ≤ BFL / TL ≤ 0.44. By limiting BFL / TL within a reasonable range, the requirements for the back focal length of the optical lens can be met, and space can be reserved for the installation and focusing of optical components, avoiding mechanical interference and improving assembly stability. Preferably, 0.27 ≤ BFL / TL ≤ 0.42.

[0115] In this embodiment, the radius of curvature R1 of the first side surface of the first lens, the radius of curvature R2 of the second side surface of the first lens, the maximum half-aperture D1 of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, and the maximum half-aperture D2 of the second side surface of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: 1.5 ≤ (R1 / D1) / (R2 / D2) ≤ 14.6. By limiting (R1 / D1) / (R2 / D2) within a reasonable range, the radius of curvature and aperture of the first and second sides of the first lens can be limited. The smaller the difference in the radius of curvature values ​​of the two surfaces and the closer the aperture values ​​of the two surfaces are, the more beneficial it is to reduce light divergence, suppress light, and make the front end of the optical lens have a smaller aperture. Preferably, 2.3 ≤ (R1 / D1) / (R2 / D2) ≤ 14.4.

[0116] In this embodiment, the total length (TTL) of the optical lens and the maximum effective aperture (DMAX) of the optical lens satisfy the following condition: TTL / DMAX ≥ 1.2. By limiting TTL / DMAX within a reasonable range, the lateral and longitudinal lengths of the optical lens can be reasonably controlled, making the entire optical lens more compact and facilitating miniaturization. Preferably, TTL / DMAX ≥ 2.6.

[0117] In this embodiment, the focal length F34 of the cemented lens formed by the third and fourth lenses, and the overall focal length F of the optical lens satisfy the condition: |F34 / F|≥2.8. By limiting |F34 / F| to a reasonable range, the focal length of the cemented lens can be appropriately controlled, which is beneficial for enhancing the ability to control light, allowing more light to enter the rear optical system, and improving relative illumination. Preferably, |F34 / F|≥3.3.

[0118] In this embodiment, the sagitta of the first side surface of the fifth lens, sag9, and the sagitta of the second side surface of the fifth lens, sag10, satisfy the following condition: 0.4 ≤ |sag9 / sag10| ≤ 6.5. Limiting |sag9 / sag10| within a reasonable range facilitates smooth light transition and improves the imaging quality of the optical lens. Preferably, 0.6 ≤ |sag9 / sag10| ≤ 4.2.

[0119] In this embodiment, the focal length F1 of the first lens, the radius of curvature R2 of the second side surface of the first lens, the focal length F2 of the second lens, and the radius of curvature R3 of the first side surface of the second lens satisfy the following condition: -4.5 ≤ F1 / R2 + F2 / R3 ≤ -0.05. By limiting F1 / R2 + F2 / R3 within a reasonable range, ghosting of light on the second side surface of the third lens can be effectively avoided, and the risk of ghosting on the imaging plane can be reduced. Preferably, -3.3 ≤ F1 / R2 + F2 / R3 ≤ -0.6.

[0120] In this embodiment, the sagitta (sag1) of the first side surface of the first lens and the sagitta (sag2) of the second side surface of the first lens satisfy the following condition: 0.01 ≤ |sag1 / sag2| ≤ 1.5. Limiting |sag1 / sag2| within a reasonable range facilitates light collection by the first lens, allowing for a smooth transition of light to the rear, and achieving minimal distortion, effectively reducing aberrations. Preferably, 0.05 ≤ |sag1 / sag2| ≤ 0.8.

[0121] In this embodiment, the air gap d45 between the second side surface of the second lens and the first side surface of the third lens, and the total length TTL of the optical lens, satisfy the following condition: 0.01 ≤ d45 / TTL ≤ 0.77. By limiting d45 / TTL within a reasonable range, the distances from the second and third lenses to the aperture stop can be controlled, allowing for a smooth transition of light near the aperture stop, which is beneficial for improving image quality. Preferably, 0.03 ≤ d45 / TTL ≤ 0.45.

[0122] In this embodiment, the focal length F1 of the first lens and the total focal length F of the optical lens satisfy the following condition: F1 / F ≥ -4.25. By limiting F1 / F within a reasonable range, the focal length of the first lens can be reasonably allocated, which is beneficial for light rays with a large field of view to enter the optical lens and improves image quality. Preferably, F1 / F ≥ -2.82.

[0123] In this embodiment, the focal length F5 of the fifth lens and the total focal length F of the optical lens satisfy the following condition: 1.2 ≤ F5 / F ≤ 17. By limiting F5 / F within a reasonable range, the focal length range of the fifth lens can be reasonably set. Combined with the positive optical power of the fifth lens, this facilitates light convergence, allowing the light to be incident approximately perpendicularly onto the sixth lens, thus improving image quality. Preferably, 3.3 ≤ F5 / F ≤ 14.

[0124] In this embodiment, the focal length F6 of the sixth lens and the total focal length F of the optical lens satisfy the following condition: 1.6 ≤ F6 / F ≤ 18. By limiting F6 / F within a reasonable range, the focal length of the sixth lens can be set appropriately. Combined with the positive optical power of the sixth lens, this helps to smooth the light path and facilitates high luminous flux. Preferably, 2.5 ≤ F6 / F ≤ 15.

[0125] Example 2

[0126] like Figures 1 to 8As shown, the optical lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The first lens has negative optical power; the second lens has positive optical power; the third lens has negative optical power; the fourth lens has positive optical power; the fifth lens has positive optical power; and the sixth lens has positive optical power. Among them, the focal length F5 of the fifth lens and the total focal length F of the optical lens satisfy the following condition: 1.2≤F5 / F≤17.

[0127] By setting the first lens to have a negative optical power, light can be diverged and its angle adjusted, allowing for a smooth transition of light rays to the rear, thus achieving a ghosting-free effect. By setting the second lens to have a positive optical power, light can be converged, effectively gathering central and peripheral rays from various fields of view, increasing the lens's illumination. By setting the third lens to have a negative optical power, light is further diverged, and the refraction angle is adjusted. By setting the fourth lens to have a positive optical power, light convergence is facilitated, and it also works in conjunction with the negative optical power of the third lens to correct chromatic aberration, improving image quality. By setting the fifth lens to have a positive optical power, light convergence is achieved. By setting the sixth lens to have a positive optical power and a gently sloping shape, light transitions smoothly, and light is incident almost perpendicularly to the second side of the sixth lens, resulting in less aberration and improving the lens's resolving power. Furthermore, the positive optical power of the sixth lens works in conjunction with the negative optical power of the fifth lens to correct chromatic aberration and improve image quality.

[0128] In this embodiment, the first side surface of the first lens is convex, and the second side surface of the first lens is concave. Designing the first side surface of the first lens as convex can reduce the interference of water droplets on image quality in rainy application scenarios. Designing the second side surface of the first lens as concave can collect as much light as possible from a large field of view into the rear optical system, allowing divergent light to enter smoothly into the rear, and further making the light path transition smoothly.

[0129] In this embodiment, both the first and second sides of the second lens are convex. Designing the first side of the second lens as convex allows it to mesh with the second side of the first lens, facilitating a smoother light transition and altering the trajectory of edge rays. This reduces the front diameter of the optical lens, thereby reducing its size and enabling miniaturization and lower production costs. Designing the second side of the second lens as convex creates a biconvex shape, which reduces light refraction between the first and second sides, thus lowering the sensitivity of the optical lens.

[0130] Optionally, the first side of the third lens is convex and the second side of the third lens is concave, so that when light reaches the second side of the third lens, the light deflection is small, which helps the light to be more concentrated when it reaches the imaging surface, corrects edge field aberrations by defocusing, achieves high resolution, and at the same time, the light energy loss is small, which helps to reduce the sensitivity of the third lens.

[0131] Alternatively, the first side of the third lens can be concave, and the second side of the third lens can also be concave, so that the light entering the third lens has a significant light reversal, which changes the trend of large-angle light and is conducive to achieving high resolution.

[0132] In this embodiment, both the first and second sides of the fourth lens are convex. The convexity of the first side of the fourth lens significantly alters the direction of light, allowing for miniaturization of the optical lens while maintaining the same aperture on both sides.

[0133] Optionally, both the first and second sides of the fifth lens are convex. The convexity of the first side of the fifth lens reduces the upward tendency of light rays emitted from the fourth lens, allowing the light rays to be incident approximately perpendicularly on the first side of the sixth lens after passing through the fifth lens. Setting the second side of the fifth lens to convex as well, thus adjusting the shape of the fifth lens to be biconvex, helps improve the resolving power of the optical lens.

[0134] Alternatively, the first side of the fifth lens could be convex, and the second side concave. Adjusting the shape of the fifth lens to be convex and concave can adjust the angle of light refraction and reduce the sensitivity of the optical lens.

[0135] Optionally, the first side of the sixth lens is convex, and the second side of the sixth lens is convex, that is, the sixth lens is biconvex. This allows the light to converge effectively and smoothly at the end, so that the light reaches the imaging plane smoothly. At the same time, it can reduce the deflection of the light on the first and second sides of the sixth lens, which helps to reduce the sensitivity of the optical lens.

[0136] Alternatively, the first side of the sixth lens could be convex, and the second side concave. Light passing through the sixth lens reaches the imaging plane with a longer optical path, which is beneficial for achieving a small CRA (Current Aspect Ratio).

[0137] In this embodiment, the first lens is an aspherical lens, which is beneficial for improving field curvature and astigmatism, and enhancing resolving power.

[0138] In this embodiment, the third and fourth lenses are cemented together to form a cemented lens. The use of a cemented lens effectively eliminates the effect of ghosting on the optical lens and corrects chromatic aberration, allowing the optical lens to maintain high resolution while eliminating ghosting. Simultaneously, it reduces light energy loss caused by light reflection between the third and fourth lenses, enhances the ability to control light, and allows more light to enter the rear optical system, improving relative illumination. Furthermore, when the cemented lens is a negative lens, it has a higher refractive index than a positive lens, allowing light to converge effectively and smoothly, facilitating stable light delivery to the imaging plane, and reducing the overall weight and cost of the optical lens.

[0139] In this embodiment, the optical lens also includes an aperture stop, which is positioned between the second lens and the third lens. Placing the aperture stop in the middle position helps to effectively converge light, reduce the lens apertures at both ends of the optical lens, and reduce the adjustment process.

[0140] In this embodiment, the thickness d34 of the cemented lens formed by the third and fourth lenses and the total length TTL of the optical lens satisfy the following condition: 0.12 ≤ d34 / TTL ≤ 0.2. By limiting d34 / TTL within a reasonable range, the thickness of the cemented lens can be increased, and the length of the optical lens can be effectively controlled, enhancing the ability to control light and allowing more light to enter the rear optical system, thereby improving relative illumination. Preferably, 0.13 ≤ d34 / TTL ≤ 0.18.

[0141] In this embodiment, the focal length F5 of the fifth lens and the focal length F6 of the sixth lens satisfy the condition: |F5 / F6|≥0.55. By limiting |F5 / F6| to a reasonable range, the focal lengths of the fifth and sixth lenses are similar, which also makes their light-reflecting abilities similar, contributing to a smooth light transition and improving image quality. Preferably, |F5 / F6|≥0.7.

[0142] In this embodiment, the air gap d12 between the first and second lenses and the total length TTL of the optical lens satisfy the following condition: 0.13 ≤ d12 / TTL ≤ 0.23. By limiting d12 / TTL within a reasonable range, the distance between the first and second lenses can be controlled, which helps to reduce the reflection of light by the lenses and achieve a ghosting-free effect. It also facilitates a reduction in the rear aperture, promoting a smooth light transition. Furthermore, it avoids excessive air gap between the first and second lenses, which could reduce resolving power and ensure image quality. Preferably, 0.15 ≤ d12 / TTL ≤ 0.21.

[0143] In this embodiment, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radians θ of the maximum field of view of the optical lens satisfy the following relationship: 0.108 ≤ |(HF)| θ) / (F θ)|≤0.72. By |(HF) θ) / (F When θ is limited to a reasonable range, it ensures that the focal length of the optical lens is increased while maintaining the same field of view and imaging plane size, thus emphasizing the imaging effect in the central area of ​​the imaging plane. Preferably, 0.108 ≤ |(HF)| θ) / (F θ)|≤0.55.

[0144] In this embodiment, the radius of curvature R2 of the second side surface of the first lens and the maximum half-aperture D2 of the second side surface of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: R2 / D2≤1. By limiting R2 / D2 within a reasonable range, it is beneficial to reduce the height of light entering the second lens, thereby achieving a small aperture for the second lens while also considering its manufacturability. Preferably, R2 / D2≤0.85.

[0145] In this embodiment, the image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian θ of the maximum field of view of the optical lens satisfy the following relationship: (H / 2) / (F tan(θ / 2))≥0.67. By using (H / 2) / (F By limiting tan(θ / 2) within a reasonable range, the ratio of the actual image height to the ideal image height can be set appropriately, achieving large angular resolution and resulting in better imaging effects. Preferably, (H / 2) / (F tan(θ / 2))≥0.88.

[0146] In this embodiment, the maximum aperture D of the first side 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 (FOV) of the optical lens satisfy the following condition: 0.02 ≤ D / H / FOV ≤ 0.04. By limiting D / H / FOV within a reasonable range, the front aperture of the optical lens can be reduced, which is beneficial for miniaturization. Preferably, 0.025 ≤ D / H / FOV ≤ 0.034.

[0147] In this embodiment, the optical back focal length (BFL) and the lens group length (TL) of the optical lens satisfy the following relationship: 0.17 ≤ BFL / TL ≤ 0.44. By limiting BFL / TL within a reasonable range, the requirements for the back focal length of the optical lens can be met, and space can be reserved for the installation and focusing of optical components, avoiding mechanical interference and improving assembly stability. Preferably, 0.27 ≤ BFL / TL ≤ 0.42.

[0148] In this embodiment, the radius of curvature R1 of the first side surface of the first lens, the radius of curvature R2 of the second side surface of the first lens, the maximum half-aperture D1 of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, and the maximum half-aperture D2 of the second side surface of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: 1.5 ≤ (R1 / D1) / (R2 / D2) ≤ 14.6. By limiting (R1 / D1) / (R2 / D2) within a reasonable range, the radius of curvature and aperture of the first and second sides of the first lens can be limited. The smaller the difference in the radius of curvature values ​​of the two surfaces and the closer the aperture values ​​of the two surfaces are, the more beneficial it is to reduce light divergence, suppress light, and make the front end of the optical lens have a smaller aperture. Preferably, 2.3 ≤ (R1 / D1) / (R2 / D2) ≤ 14.4.

[0149] In this embodiment, the total length (TTL) of the optical lens and the maximum effective aperture (DMAX) of the optical lens satisfy the following condition: TTL / DMAX ≥ 1.2. By limiting TTL / DMAX within a reasonable range, the lateral and longitudinal lengths of the optical lens can be reasonably controlled, making the entire optical lens more compact and facilitating miniaturization. Preferably, TTL / DMAX ≥ 2.6.

[0150] In this embodiment, the focal length F34 of the cemented lens formed by the third and fourth lenses, and the overall focal length F of the optical lens satisfy the condition: |F34 / F|≥2.8. By limiting |F34 / F| to a reasonable range, the focal length of the cemented lens can be appropriately controlled, which is beneficial for enhancing the ability to control light, allowing more light to enter the rear optical system, and improving relative illumination. Preferably, |F34 / F|≥3.3.

[0151] In this embodiment, the sagitta of the first side surface of the fifth lens, sag9, and the sagitta of the second side surface of the fifth lens, sag10, satisfy the following condition: 0.4 ≤ |sag9 / sag10| ≤ 6.5. Limiting |sag9 / sag10| within a reasonable range facilitates smooth light transition and improves the imaging quality of the optical lens. Preferably, 0.6 ≤ |sag9 / sag10| ≤ 4.2.

[0152] In this embodiment, the focal length F1 of the first lens, the radius of curvature R2 of the second side surface of the first lens, the focal length F2 of the second lens, and the radius of curvature R3 of the first side surface of the second lens satisfy the following condition: -4.5 ≤ F1 / R2 + F2 / R3 ≤ -0.05. By limiting F1 / R2 + F2 / R3 within a reasonable range, ghosting of light on the second side surface of the third lens can be effectively avoided, and the risk of ghosting on the imaging plane can be reduced. Preferably, -3.3 ≤ F1 / R2 + F2 / R3 ≤ -0.6.

[0153] In this embodiment, the sagitta (sag1) of the first side surface of the first lens and the sagitta (sag2) of the second side surface of the first lens satisfy the following condition: 0.01 ≤ |sag1 / sag2| ≤ 1.5. Limiting |sag1 / sag2| within a reasonable range facilitates light collection by the first lens, allowing for a smooth transition of light to the rear, and achieving minimal distortion, effectively reducing aberrations. Preferably, 0.05 ≤ |sag1 / sag2| ≤ 0.8.

[0154] In this embodiment, the air gap d45 between the second side surface of the second lens and the first side surface of the third lens, and the total length TTL of the optical lens, satisfy the following condition: 0.01 ≤ d45 / TTL ≤ 0.77. By limiting d45 / TTL within a reasonable range, the distances from the second and third lenses to the aperture stop can be controlled, allowing for a smooth transition of light near the aperture stop, which is beneficial for improving image quality. Preferably, 0.03 ≤ d45 / TTL ≤ 0.45.

[0155] In this embodiment, the focal length F1 of the first lens and the total focal length F of the optical lens satisfy the following condition: F1 / F ≥ -4.25. By limiting F1 / F within a reasonable range, the focal length of the first lens can be reasonably allocated, which is beneficial for light rays with a large field of view to enter the optical lens and improves image quality. Preferably, F1 / F ≥ -2.82.

[0156] In this embodiment, the focal length F5 of the fifth lens and the total focal length F of the optical lens satisfy the following condition: 1.2 ≤ F5 / F ≤ 17. By limiting F5 / F within a reasonable range, the focal length range of the fifth lens can be reasonably set. Combined with the positive optical power of the fifth lens, this facilitates light convergence, allowing the light to be incident approximately perpendicularly onto the sixth lens, thus improving image quality. Preferably, 3.3 ≤ F5 / F ≤ 14.

[0157] In this embodiment, the focal length F6 of the sixth lens and the total focal length F of the optical lens satisfy the following condition: 1.6 ≤ F6 / F ≤ 18. By limiting F6 / F within a reasonable range, the focal length of the sixth lens can be set appropriately. Combined with the positive optical power of the sixth lens, this helps to smooth the light path and facilitates high luminous flux. Preferably, 2.5 ≤ F6 / F ≤ 15.

[0158] It should be noted that the total length TTL of the optical lens is the distance from the first side of the first lens to the imaging plane of the optical lens, the optical back focal length BFL is the distance from the last lens to the imaging plane of the optical lens, the lens group length TL of the optical lens is the distance from the first side of the first lens to the second side of the sixth lens, and ENPD is the entrance pupil diameter of the optical lens.

[0159] Optionally, the aforementioned optical lens may also include a filter for correcting color deviation and a protective glass for protecting the photosensitive element located on the imaging surface.

[0160] The optical lens in this application may employ multiple lenses, such as the six lenses described above. In this application, at least one of the mirror surfaces of each lens is an aspherical mirror. An aspherical lens is characterized by a continuously changing curvature from the lens center to the lens periphery. Unlike a spherical lens, which has a constant curvature from the lens center to the lens periphery, an aspherical lens has superior curvature radius characteristics, offering advantages in improving distortion aberrations and astigmatism. By using an aspherical lens, aberrations occurring during imaging can be eliminated as much as possible, thereby improving image quality. Specifically, when the imaging quality of the optical lens is of primary concern, all six lenses may be aspherical lenses.

[0161] In an exemplary embodiment, the first to sixth lenses can all be glass lenses. Optical lenses made of glass can suppress the shift in the back focus of the optical lens due to temperature changes, thereby improving system stability. Simultaneously, using glass avoids lens blurring caused by high and low temperature variations in the operating environment, thus preventing interference with normal lens use. For example, an all-glass optical lens has a wider temperature range, maintaining stable optical performance within the range of -40℃ to 105℃. Specifically, when resolution and reliability are of primary concern, 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 can effectively reduce manufacturing costs. Alternatively, the first to sixth lenses in the optical lens can also be made of a combination of plastic and glass.

[0162] This application also provides an electronic device, including the aforementioned optical lens and an imaging element for converting the optical image formed by the optical lens into an electrical signal. The imaging element may be a photosensitive coupler (CCD) or a complementary metal oxide semiconductor device (CMOS). The electronic device may be a standalone imaging device such as a digital camera, or an imaging module integrated into a mobile electronic device such as a mobile phone. This electronic device is equipped with the optical lens described above.

[0163] However, those skilled in the art will understand that the number of lenses constituting the optical lens can be varied to obtain the various results and advantages described herein without departing from the technical solutions claimed in this application. For example, although six lenses are described as an example in the embodiments, the optical lens is not limited to including six lenses. If necessary, the optical lens may also include other numbers of lenses.

[0164] The following description, with reference to the accompanying drawings, further illustrates examples of specific surface shapes and parameters of optical lenses applicable to the above embodiments.

[0165] Example 1

[0166] like Figure 1 As shown, the optical lens, from the object side to the image side, includes, in sequence, a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a protective glass, and an imaging surface IMA.

[0167] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is convex, and its second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S6 is concave, and its second side surface S7 is concave. The fourth lens L4 has positive optical power, its first side surface S7 is convex, and its second side surface S8 is convex. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is concave. The protective glass has a first side surface S13 and a second side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging plane IMA.

[0168] In this example, the focal length F of the optical lens is 8.9820 mm, the total length TTL of the optical lens is 77.7720 mm, and the maximum field of view FOV of the optical lens is 62.0190°.

[0169] In this example, the third and fourth lenses are cemented lenses, so the second side surface of the third lens and the first side surface of the fourth lens are both S7. However, for the first and second side surfaces, even with the same radius of curvature, their surface shapes are different. Therefore, the second side surface S7 of the third lens is concave, and the first side surface S7 of the fourth lens is convex.

[0170] Table 1 shows the basic structural parameters of the optical lens in Example 1, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0171]

[0172] Table 1

[0173] In this example, the first lens is an aspherical lens. The surface shape of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0174] Formula (1);

[0175] Where x is the distance vector from the vertex of the aspherical surface along the optical axis at a height of h; 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; and A is the higher-order coefficient. Table 2 below shows the conic coefficient k and the higher-order coefficients A (4th-order coefficient), B (6th-order coefficient), C (8th-order coefficient), D (10th-order coefficient), E (12th-order coefficient), and F (14th-order coefficient) that can be used for the aspherical lens surfaces S1 and S2 in this example.

[0176]

[0177] Table 2

[0178] Example 2

[0179] like Figure 2 As shown, the optical lens, from the object side to the image side, includes, in sequence, a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a protective glass, and an imaging plane IMA. For the sake of brevity, the omitted parts are similar to the description in Example 1.

[0180] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is convex, and its second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S6 is concave, and its second side surface S7 is concave. The fourth lens L4 has positive optical power, its first side surface S7 is convex, and its second side surface S8 is convex. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is concave. The protective glass has a first side surface S13 and a second side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging plane IMA.

[0181] In this example, the focal length F of the optical lens is 8.9760 mm, the total length TTL of the optical lens is 78.0940 mm, and the maximum field of view FOV of the optical lens is 62.1139°.

[0182] In this example, the third and fourth lenses are cemented lenses, so the second side surface of the third lens and the first side surface of the fourth lens are both S7. However, for the first and second side surfaces, even with the same radius of curvature, their surface shapes are different. Therefore, the second side surface S7 of the third lens is concave, and the first side surface S7 of the fourth lens is convex.

[0183] Table 3 shows the basic structural parameters of the optical lens in Example 2, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0184]

[0185] Table 3

[0186] In this example, the first lens is an aspherical lens. Table 4 shows the conic coefficient k and the coefficients of each higher-order term for the aspherical lens surfaces S1 and S2 that can be used in this example.

[0187]

[0188] Table 4

[0189] Example 3

[0190] like Figure 3 As shown, the optical lens, from the object side to the image side, includes, in sequence, a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a protective glass, and an imaging surface IMA.

[0191] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is convex, and its second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S6 is concave, and its second side surface S7 is concave. The fourth lens L4 has positive optical power, its first side surface S7 is convex, and its second side surface S8 is convex. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is convex. The protective glass has a first side surface S13 and a second side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging plane IMA.

[0192] In this example, the focal length F of the optical lens is 8.9266 mm, the total length TTL of the optical lens is 77.7924 mm, and the maximum field of view FOV of the optical lens is 62.3955°.

[0193] In this example, the third and fourth lenses are cemented lenses, so the second side surface of the third lens and the first side surface of the fourth lens are both S7. However, for the first and second side surfaces, even with the same radius of curvature, their surface shapes are different. Therefore, the second side surface S7 of the third lens is concave, and the first side surface S7 of the fourth lens is convex.

[0194] Table 5 shows the basic structural parameters of the optical lens in Example 3, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0195]

[0196] Table 5

[0197] In this example, the first lens is an aspherical lens. Table 6 shows the conic coefficient k and the coefficients of each higher-order term for the aspherical lens surfaces S1 and S2 that can be used in this example.

[0198]

[0199] Table 6

[0200] Example 4

[0201] like Figure 4 As shown, the optical lens, from the object side to the image side, includes, in sequence, a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a protective glass, and an imaging surface IMA.

[0202] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is convex, and its second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S6 is concave, and its second side surface S7 is concave. The fourth lens L4 has positive optical power, its first side surface S7 is convex, and its second side surface S8 is convex. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is convex. The protective glass has a first side surface S13 and a second side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging plane IMA.

[0203] In this example, the focal length F of the optical lens is 8.9097 mm, the total length TTL of the optical lens is 78.3810 mm, and the maximum field of view FOV of the optical lens is 62.5185°.

[0204] In this example, the third and fourth lenses are cemented lenses, so the second side surface of the third lens and the first side surface of the fourth lens are both S7. However, for the first and second side surfaces, even with the same radius of curvature, their surface shapes are different. Therefore, the second side surface S7 of the third lens is concave, and the first side surface S7 of the fourth lens is convex.

[0205] Table 7 shows the basic structural parameters of the optical lens in Example 4, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0206]

[0207] Table 7

[0208] In this example, the first lens is an aspherical lens. Table 8 shows the conic coefficient k and the coefficients of each higher-order term for the aspherical lens surfaces S1 and S2 that can be used in this example.

[0209]

[0210] Table 8

[0211] Example 5

[0212] like Figure 5As shown, the optical lens, from the object side to the image side, includes, in sequence, a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a protective glass, and an imaging surface IMA.

[0213] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is convex, and its second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S6 is concave, and its second side surface S7 is concave. The fourth lens L4 has positive optical power, its first side surface S7 is convex, and its second side surface S8 is convex. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is concave. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is concave. The protective glass has a first side surface S13 and a second side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging plane IMA.

[0214] In this example, the focal length F of the optical lens is 9.0169mm, the total length TTL of the optical lens is 77.8426mm, and the maximum field of view FOV of the optical lens is 62.0470°.

[0215] In this example, the third and fourth lenses are cemented lenses, so the second side surface of the third lens and the first side surface of the fourth lens are both S7. However, for the first and second side surfaces, even with the same radius of curvature, their surface shapes are different. Therefore, the second side surface S7 of the third lens is concave, and the first side surface S7 of the fourth lens is convex.

[0216] Table 9 shows the basic structural parameters of the optical lens in Example 5, where the radius of curvature (Radius) and thickness / distance are in millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0217]

[0218] Table 9

[0219] In this example, the first lens is an aspherical lens. Table 10 shows the conic coefficient k and the coefficients of each higher-order term for the aspherical lens surfaces S1 and S2 that can be used in this example.

[0220]

[0221] Table 10

[0222] Example 6

[0223] like Figure 6 As shown, the optical lens, from the object side to the image side, includes, in sequence, a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a protective glass, and an imaging surface IMA.

[0224] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is convex, and its second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S6 is concave, and its second side surface S7 is concave. The fourth lens L4 has positive optical power, its first side surface S7 is convex, and its second side surface S8 is convex. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is concave. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is concave. The protective glass has a first side surface S13 and a second side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging plane IMA.

[0225] In this example, the focal length F of the optical lens is 9.0179mm, the total length TTL of the optical lens is 77.7710mm, and the maximum field of view FOV of the optical lens is 61.9920°.

[0226] In this example, the third and fourth lenses are cemented lenses, so the second side surface of the third lens and the first side surface of the fourth lens are both S7. However, for the first and second side surfaces, even with the same radius of curvature, their surface shapes are different. Therefore, the second side surface S7 of the third lens is concave, and the first side surface S7 of the fourth lens is convex.

[0227] Table 11 shows the basic structural parameters of the optical lens in Example 6, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0228]

[0229] Table 11

[0230] In this example, the first lens is an aspherical lens. Table 12 shows the conic coefficient k and the coefficients of each higher-order term for the aspherical lens surfaces S1 and S2 that can be used in this example.

[0231]

[0232] Table 12

[0233] Example 7

[0234] like Figure 7 As shown, the optical lens, from the object side to the image side, includes, in sequence, a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a protective glass, and an imaging surface IMA.

[0235] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is convex, and its second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S6 is convex, and its second side surface S7 is concave. The fourth lens L4 has positive optical power, its first side surface S7 is convex, and its second side surface S8 is convex. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is concave. The protective glass has a first side surface S13 and a second side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging plane IMA.

[0236] In this example, the focal length F of the optical lens is 10.2745mm, the total length TTL of the optical lens is 78.6250mm, and the maximum field of view FOV of the optical lens is 59.0468°.

[0237] In this example, the third and fourth lenses are cemented lenses, so the second side surface of the third lens and the first side surface of the fourth lens are both S7. However, for the first and second side surfaces, even with the same radius of curvature, their surface shapes are different. Therefore, the second side surface S7 of the third lens is concave, and the first side surface S7 of the fourth lens is convex.

[0238] Table 13 shows the basic structural parameters of the optical lens in Example 7, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0239]

[0240] Table 13

[0241] In this example, the first lens is an aspherical lens. Table 14 shows the conic coefficient k and the coefficients of each higher-order term for the aspherical lens surfaces S1 and S2 that can be used in this example.

[0242]

[0243] Table 14

[0244] Example 8

[0245] like Figure 8 As shown, the optical lens, from the object side to the image side, includes, in sequence, a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a protective glass, and an imaging surface IMA.

[0246] The first lens L1 has negative optical power, its first side surface S1 is convex, and its second side surface S2 is concave. The second lens L2 has positive optical power, its first side surface S3 is convex, and its second side surface S4 is convex. The third lens L3 has negative optical power, its first side surface S6 is convex, and its second side surface S7 is concave. The fourth lens L4 has positive optical power, its first side surface S7 is convex, and its second side surface S8 is convex. The fifth lens L5 has positive optical power, its first side surface S9 is convex, and its second side surface S10 is convex. The sixth lens L6 has positive optical power, its first side surface S11 is convex, and its second side surface S12 is concave. The protective glass has a first side surface S13 and a second side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging plane IMA.

[0247] In this example, the focal length F of the optical lens is 10.2460mm, the total length TTL of the optical lens is 78.7474mm, and the maximum field of view FOV of the optical lens is 59.0960°.

[0248] In this example, the third and fourth lenses are cemented lenses, so the second side surface of the third lens and the first side surface of the fourth lens are both S7. However, for the first and second side surfaces, even with the same radius of curvature, their surface shapes are different. Therefore, the second side surface S7 of the third lens is concave, and the first side surface S7 of the fourth lens is convex.

[0249] Table 15 shows the basic structural parameters of the optical lens in Example 8, where the units for radius of curvature (Radius) and thickness / distance are millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0250]

[0251] Table 15

[0252] In this example, the first lens is an aspherical lens. Table 16 shows the conic coefficient k and the coefficients of each higher-order term for the aspherical lens surfaces S1 and S2 that can be used in this example.

[0253]

[0254] Table 16

[0255] In summary, Examples 1 through 8 satisfy the relationships shown in Table 17.

[0256]

[0257] Table 17

[0258] Table 18 gives the complete set of focal length values ​​F for the optical lenses of Examples 1 to 8, and the focal length values ​​F1 to F6 (unit: mm) for each lens.

[0259]

[0260] Table 18

[0261] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0262] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0263] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0264] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An optical lens, wherein the optical lens comprises a total of six lenses, characterized in that, include: A first lens having negative optical power, a first side surface of the first lens being convex, and a second side surface of the first lens being concave; The second lens has positive optical power, and the first side surface of the second lens is convex, and the second side surface of the second lens is convex. The third lens has negative optical power, and the second side surface of the third lens is concave. The fourth lens has positive optical power, and the first side surface of the fourth lens is convex, and the second side surface of the fourth lens is convex. The fifth lens has positive optical power, and the first side surface of the fifth lens is convex. The sixth lens has positive optical power, and the first side surface of the sixth lens is convex. The focal length F6 of the sixth lens and the total focal length F of the optical lens satisfy the following condition: 4.287≤F6 / F≤6.

334.

2. The optical lens according to claim 1, characterized in that, The first side surface of the third lens is convex.

3. The optical lens according to claim 1, characterized in that, The first side surface of the third lens is concave.

4. The optical lens according to claim 1, characterized in that, The second side surface of the fifth lens is convex.

5. The optical lens according to claim 1, characterized in that, The second side surface of the fifth lens is concave.

6. The optical lens according to claim 1, characterized in that, The second side surface of the sixth lens is convex.

7. The optical lens according to claim 1, characterized in that, The second side surface of the sixth lens is concave.

8. The optical lens according to claim 1, characterized in that, The first lens is an aspherical lens.

9. The optical lens according to claim 1, characterized in that, The third lens and the fourth lens are cemented together to form a cemented lens.

10. The optical lens according to claim 1, characterized in that, The optical lens also includes an aperture stop, which is disposed between the second lens and the third lens.

11. The optical lens according to any one of claims 1 to 10, characterized in that, The thickness d34 of the cemented lens formed by the third lens and the fourth lens and the total length TTL of the optical lens satisfy the following condition: 0.12≤d34 / TTL≤0.

2.

12. The optical lens according to any one of claims 1 to 10, characterized in that, The focal length F5 of the fifth lens and the focal length F6 of the sixth lens satisfy the condition: |F5 / F6|≥0.

55.

13. The optical lens according to any one of claims 1 to 10, characterized in that, The air gap d12 between the first lens and the second lens and the total length TTL of the optical lens satisfy the following condition: 0.13≤d12 / TTL≤0.

23.

14. The optical lens according to any one of claims 1 to 10, characterized in that, The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radians θ of the maximum field of view of the optical lens satisfy the following relationship: 0.108 ≤ |HF θ) / (F θ)|≤0.

72.

15. The optical lens according to any one of claims 1 to 10, characterized in that, The radius of curvature R2 of the second side of the first lens and the maximum half-aperture D2 of the second side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: R2 / D2≤1.

16. The optical lens according to any one of claims 1 to 10, characterized in that, The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian θ of the maximum field of view of the optical lens satisfy the following relationship: (H / 2) / (F) tan(θ / 2))≥0.

67.

17. The optical lens according to any one of claims 1 to 10, characterized in that, The maximum aperture D of the first side 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 FOV of the optical lens satisfy the following condition: 0.02≤D / H / FOV≤0.

04.

18. The optical lens according to any one of claims 1 to 10, characterized in that, The optical back focal length (BFL) of the optical lens and the lens group length (TL) of the optical lens satisfy the following condition: 0.17 ≤ BFL / TL ≤ 0.

44.

19. The optical lens according to any one of claims 1 to 10, characterized in that, The radius of curvature R1 of the first side surface of the first lens, the radius of curvature R2 of the second side surface of the first lens, the maximum half-aperture D1 of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, and the maximum half-aperture D2 of the second side surface of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: 1.5≤(R1 / D1) / (R2 / D2)≤14.

6.

20. The optical lens according to any one of claims 1 to 10, characterized in that, The total length (TTL) of the optical lens and the maximum effective aperture (DMAX) of the optical lens satisfy the following condition: TTL / DMAX ≥ 1.

2.

21. The optical lens according to any one of claims 1 to 10, characterized in that, The focal length F34 of the cemented lens formed by the third lens and the fourth lens, and the total focal length F of the optical lens satisfy the following condition: |F34 / F|≥2.

8.

22. The optical lens according to any one of claims 1 to 10, characterized in that, The sagitta of the first side of the fifth lens, sag9, and the sagitta of the second side of the fifth lens, sag10, satisfy the following condition: 0.4 ≤ |sag9 / sag10| ≤ 6.

5.

23. The optical lens according to any one of claims 1 to 10, characterized in that, The focal length F1 of the first lens, the radius of curvature R2 of the second side surface of the first lens, the focal length F2 of the second lens, and the radius of curvature R3 of the first side surface of the second lens satisfy the following condition: -4.5≤F1 / R2+F2 / R3≤-0.

05.

24. The optical lens according to any one of claims 1 to 10, characterized in that, The sagitta of the first side surface of the first lens, sag1, and the sagitta of the second side surface of the first lens, sag2, satisfy the following condition: 0.01 ≤ |sag1 / sag2| ≤ 1.

5.

25. The optical lens according to any one of claims 1 to 10, characterized in that, The air gap d45 between the second side surface of the second lens and the first side surface of the third lens, and the total length TTL of the optical lens satisfy the following condition: 0.01≤d45 / TTL≤0.

77.

26. The optical lens according to any one of claims 1 to 10, characterized in that, The focal length F1 of the first lens and the total focal length F of the optical lens satisfy the following condition: F1 / F≥-4.

25.

27. The optical lens according to any one of claims 1 to 10, characterized in that, The focal length F5 of the fifth lens and the total focal length F of the optical lens satisfy the following condition: 1.2≤F5 / F≤17.

28. The optical lens according to any one of claims 1 to 10, characterized in that, Meet one of the following: The thickness d34 of the cemented lens formed by the third lens and the fourth lens and the total length TTL of the optical lens satisfy the following condition: 0.13≤d34 / TTL≤0.18; The focal length F5 of the fifth lens and the focal length F6 of the sixth lens satisfy the following condition: 2.106 ≥ |F5 / F6| ≥ 0.7; The air gap d12 between the first lens and the second lens and the total length TTL of the optical lens satisfy the following condition: 0.15≤d12 / TTL≤0.21; The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radians θ of the maximum field of view of the optical lens satisfy the following relationship: 0.108 ≤ |HF θ) / (F θ)|≤0.55; The radius of curvature R2 of the second side of the first lens and the maximum half-aperture D2 of the second side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following relationship: 0.770≤R2 / D2≤0.85; The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian θ of the maximum field of view of the optical lens satisfy the following relationship: 1.018 ≥ (H / 2) / (F) tan(θ / 2))≥0.88; The maximum aperture D of the first side 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 FOV of the optical lens satisfy the following condition: 0.025≤D / H / FOV≤0.

034. The optical back focal length (BFL) of the optical lens and the lens group length (TL) of the optical lens satisfy the following condition: 0.27 ≤ BFL / TL ≤ 0.42; The radius of curvature R1 of the first side surface of the first lens, the radius of curvature R2 of the second side surface of the first lens, the maximum half-aperture D1 of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, and the maximum half-aperture D2 of the second side surface of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: 2.3≤(R1 / D1) / (R2 / D2)≤14.4; The total length (TTL) of the optical lens and the maximum effective aperture (DMAX) of the optical lens satisfy the following condition: 3.991 ≥ TTL / DMAX ≥ 2.6; The focal length F34 of the cemented lens formed by the third lens and the fourth lens, and the total focal length F of the optical lens satisfy the following condition: 14.131 ≥ |F34 / F| ≥ 3.3; The sag9 of the first side of the fifth lens and the sag10 of the second side of the fifth lens satisfy the following condition: 0.6 ≤ |sag9 / sag10| ≤ 4.2; The focal length F1 of the first lens, the radius of curvature R2 of the second side surface of the first lens, the focal length F2 of the second lens, and the radius of curvature R3 of the first side surface of the second lens satisfy the following condition: -3.3≤F1 / R2+F2 / R3≤-0.6; The sagitta sag1 of the first side surface of the first lens and the sagitta sag2 of the second side surface of the first lens satisfy the following condition: 0.05≤|sag1 / sag2|≤0.8; The air gap d45 between the second side surface of the second lens and the first side surface of the third lens, and the total length TTL of the optical lens satisfy the following condition: 0.03≤d45 / TTL≤0.45; The focal length F1 of the first lens and the total focal length F of the optical lens satisfy the following relationship: -1.313 ≥ F1 / F ≥ -2.82; The focal length F5 of the fifth lens and the total focal length F of the optical lens satisfy the following condition: 3.3≤F5 / F≤14.

29. The optical lens according to any one of claims 1 to 10, characterized in that, Meet one of the following: The thickness d34 of the cemented lens formed by the third lens and the fourth lens and the total length TTL of the optical lens satisfy the following condition: 0.150≤d34 / TTL≤0.167; The focal length F5 of the fifth lens and the focal length F6 of the sixth lens satisfy the following condition: 0.813 ≤ |F5 / F6| ≤ 2.106; The air gap d12 between the first lens and the second lens and the total length TTL of the optical lens satisfy the following condition: 0.170≤d12 / TTL≤0.208; The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radians θ of the maximum field of view of the optical lens satisfy the following relationship: 0.108 ≤ |HF θ) / (F θ)|≤0.119; The radius of curvature R2 of the second side of the first lens and the maximum half-aperture D2 of the second side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following relationship: 0.770≤R2 / D2≤0.833; The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian θ of the maximum field of view of the optical lens satisfy the following relationship: 0.997 ≤ (H / 2) / (F) tan(θ / 2))≤1.018; The maximum aperture D of the first side 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 FOV of the optical lens satisfy the following condition: 0.029≤D / H / FOV≤0.031; The optical back focal length BFL of the optical lens and the lens group length TL of the optical lens satisfy the following condition: 0.378≤BFL / TL≤0.412; The radius of curvature R1 of the first side surface of the first lens, the radius of curvature R2 of the second side surface of the first lens, the maximum half-aperture D1 of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, and the maximum half-aperture D2 of the second side surface of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: 4.189≤(R1 / D1) / (R2 / D2)≤13.315; The total length (TTL) of the optical lens and the maximum effective aperture (DMAX) of the optical lens satisfy the following condition: 3.791 ≤ TTL / DMAX ≤ 3.991; The focal length F34 of the cemented lens formed by the third lens and the fourth lens, and the total focal length F of the optical lens satisfy the following condition: 4.381≤|F34 / F|≤14.131; The sagitta sag9 of the first side of the fifth lens and the sagitta sag10 of the second side of the fifth lens satisfy the following condition: 0.869≤|sag9 / sag10|≤3.324; The focal length F1 of the first lens, the radius of curvature R2 of the second side surface of the first lens, the focal length F2 of the second lens, and the radius of curvature R3 of the first side surface of the second lens satisfy the following condition: -2.174≤F1 / R2+F2 / R3≤-1.283; The sagitta sag1 of the first side surface of the first lens and the sagitta sag2 of the second side surface of the first lens satisfy the following condition: 0.084≤|sag1 / sag2|≤0.243; The air gap d45 between the second side surface of the second lens and the first side surface of the third lens, and the total length TTL of the optical lens satisfy the following condition: 0.059≤d45 / TTL≤0.137; The focal length F1 of the first lens and the total focal length F of the optical lens satisfy the following condition: -1.608 ≤ F1 / F ≤ -1.313; The focal length F5 of the fifth lens and the total focal length F of the optical lens satisfy the following condition: 4.952≤F5 / F≤9.

357.

30. An optical lens, characterized in that, The optical lens has a total of six lenses, including: A first lens, the first lens having negative optical power; A second lens, the second lens having positive optical power; A third lens, wherein the third lens has negative optical power; A fourth lens, wherein the fourth lens has positive optical power; The fifth lens has positive optical power; A sixth lens, wherein the sixth lens has positive optical power; Wherein, the focal length F5 of the fifth lens and the total focal length F of the optical lens satisfy the following condition: 1.2≤F5 / F≤17; The focal length F6 of the sixth lens and the total focal length F of the optical lens satisfy the following condition: 4.287≤F6 / F≤6.

334.

31. The optical lens according to claim 30, characterized in that, The first side surface of the first lens is convex, and the second side surface of the first lens is concave.

32. The optical lens according to claim 30, characterized in that, The first side surface of the second lens is convex, and the second side surface of the second lens is convex.

33. The optical lens according to claim 30, characterized in that, The first side surface of the third lens is convex, and the second side surface of the third lens is concave.

34. The optical lens according to claim 30, characterized in that, The first side surface of the third lens is concave, and the second side surface of the third lens is concave.

35. The optical lens according to claim 30, characterized in that, The first side surface of the fourth lens is convex, and the second side surface of the fourth lens is convex.

36. The optical lens according to claim 30, characterized in that, The first side surface of the fifth lens is convex, and the second side surface of the fifth lens is convex.

37. The optical lens according to claim 30, characterized in that, The first side surface of the fifth lens is convex, and the second side surface of the fifth lens is concave.

38. The optical lens according to claim 30, characterized in that, The first side surface of the sixth lens is convex, and the second side surface of the sixth lens is convex.

39. The optical lens according to claim 30, characterized in that, The first side surface of the sixth lens is convex, and the second side surface of the sixth lens is concave.

40. The optical lens according to claim 30, characterized in that, The first lens is an aspherical lens.

41. The optical lens according to claim 30, characterized in that, The third lens and the fourth lens are cemented together to form a cemented lens.

42. The optical lens according to claim 30, characterized in that, The optical lens also includes an aperture stop, which is disposed between the second lens and the third lens.

43. The optical lens according to any one of claims 30 to 42, characterized in that, The thickness d34 of the cemented lens formed by the third lens and the fourth lens and the total length TTL of the optical lens satisfy the following condition: 0.12≤d34 / TTL≤0.

2.

44. The optical lens according to any one of claims 30 to 42, characterized in that, The focal length F5 of the fifth lens and the focal length F6 of the sixth lens satisfy the condition: |F5 / F6|≥0.

55.

45. The optical lens according to any one of claims 30 to 42, characterized in that, The air gap d12 between the first lens and the second lens and the total length TTL of the optical lens satisfy the following condition: 0.13≤d12 / TTL≤0.

23.

46. ​​The optical lens according to any one of claims 30 to 42, characterized in that, The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radians θ of the maximum field of view of the optical lens satisfy the following relationship: 0.108 ≤ |HF θ) / (F θ)|≤0.

72.

47. The optical lens according to any one of claims 30 to 42, characterized in that, The radius of curvature R2 of the second side of the first lens and the maximum half-aperture D2 of the second side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: R2 / D2≤1.

48. The optical lens according to any one of claims 30 to 42, characterized in that, The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian θ of the maximum field of view of the optical lens satisfy the following relationship: (H / 2) / (F) tan(θ / 2))≥0.

67.

49. The optical lens according to any one of claims 30 to 42, characterized in that, The maximum aperture D of the first side 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 FOV of the optical lens satisfy the following condition: 0.02≤D / H / FOV≤0.

04.

50. The optical lens according to any one of claims 30 to 42, characterized in that, The optical back focal length (BFL) of the optical lens and the lens group length (TL) of the optical lens satisfy the following condition: 0.17 ≤ BFL / TL ≤ 0.

44.

51. The optical lens according to any one of claims 30 to 42, characterized in that, The radius of curvature R1 of the first side surface of the first lens, the radius of curvature R2 of the second side surface of the first lens, the maximum half-aperture D1 of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, and the maximum half-aperture D2 of the second side surface of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: 1.5≤(R1 / D1) / (R2 / D2)≤14.

6.

52. The optical lens according to any one of claims 30 to 42, characterized in that, The total length (TTL) of the optical lens and the maximum effective aperture (DMAX) of the optical lens satisfy the following condition: TTL / DMAX ≥ 1.

2.

53. The optical lens according to any one of claims 30 to 42, characterized in that, The focal length F34 of the cemented lens formed by the third lens and the fourth lens, and the total focal length F of the optical lens satisfy the following condition: |F34 / F|≥2.

8.

54. The optical lens according to any one of claims 30 to 42, characterized in that, The sagitta of the first side of the fifth lens, sag9, and the sagitta of the second side of the fifth lens, sag10, satisfy the following condition: 0.4 ≤ |sag9 / sag10| ≤ 6.

5.

55. The optical lens according to any one of claims 30 to 42, characterized in that, The focal length F1 of the first lens, the radius of curvature R2 of the second side surface of the first lens, the focal length F2 of the second lens, and the radius of curvature R3 of the first side surface of the second lens satisfy the following condition: -4.5≤F1 / R2+F2 / R3≤-0.

05.

56. The optical lens according to any one of claims 30 to 42, characterized in that, The sagitta of the first side surface of the first lens, sag1, and the sagitta of the second side surface of the first lens, sag2, satisfy the following condition: 0.01 ≤ |sag1 / sag2| ≤ 1.

5.

57. The optical lens according to any one of claims 30 to 42, characterized in that, The air gap d45 between the second side surface of the second lens and the first side surface of the third lens, and the total length TTL of the optical lens satisfy the following condition: 0.01≤d45 / TTL≤0.

77.

58. The optical lens according to any one of claims 30 to 42, characterized in that, The focal length F1 of the first lens and the total focal length F of the optical lens satisfy the following condition: F1 / F≥-4.

25.

59. The optical lens according to any one of claims 30 to 42, characterized in that, Meet one of the following: The thickness d34 of the cemented lens formed by the third lens and the fourth lens and the total length TTL of the optical lens satisfy the following condition: 0.13≤d34 / TTL≤0.18; The focal length F5 of the fifth lens and the focal length F6 of the sixth lens satisfy the following condition: 2.106 ≥ |F5 / F6| ≥ 0.7; The air gap d12 between the first lens and the second lens and the total length TTL of the optical lens satisfy the following condition: 0.15≤d12 / TTL≤0.21; The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radians θ of the maximum field of view of the optical lens satisfy the following relationship: 0.108 ≤ |HF θ) / (F θ)|≤0.55; The radius of curvature R2 of the second side of the first lens and the maximum half-aperture D2 of the second side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following relationship: 0.770≤R2 / D2≤0.85; The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian θ of the maximum field of view of the optical lens satisfy the following relationship: 1.018 ≥ (H / 2) / (F) tan(θ / 2))≥0.88; The maximum aperture D of the first side 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 FOV of the optical lens satisfy the following condition: 0.025≤D / H / FOV≤0.

034. The optical back focal length (BFL) of the optical lens and the lens group length (TL) of the optical lens satisfy the following condition: 0.27 ≤ BFL / TL ≤ 0.42; The radius of curvature R1 of the first side surface of the first lens, the radius of curvature R2 of the second side surface of the first lens, the maximum half-aperture D1 of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, and the maximum half-aperture D2 of the second side surface of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: 2.3≤(R1 / D1) / (R2 / D2)≤14.4; The total length (TTL) of the optical lens and the maximum effective aperture (DMAX) of the optical lens satisfy the following condition: 3.991 ≥ TTL / DMAX ≥ 2.6; The focal length F34 of the cemented lens formed by the third lens and the fourth lens, and the total focal length F of the optical lens satisfy the following condition: 14.131 ≥ |F34 / F| ≥ 3.3; The sag9 of the first side of the fifth lens and the sag10 of the second side of the fifth lens satisfy the following condition: 0.6 ≤ |sag9 / sag10| ≤ 4.2; The focal length F1 of the first lens, the radius of curvature R2 of the second side surface of the first lens, the focal length F2 of the second lens, and the radius of curvature R3 of the first side surface of the second lens satisfy the following condition: -3.3≤F1 / R2+F2 / R3≤-0.6; The sagitta sag1 of the first side surface of the first lens and the sagitta sag2 of the second side surface of the first lens satisfy the following condition: 0.05≤|sag1 / sag2|≤0.8; The air gap d45 between the second side surface of the second lens and the first side surface of the third lens, and the total length TTL of the optical lens satisfy the following condition: 0.03≤d45 / TTL≤0.45; The focal length F1 of the first lens and the total focal length F of the optical lens satisfy the following relationship: -1.313 ≥ F1 / F ≥ -2.82; The focal length F5 of the fifth lens and the total focal length F of the optical lens satisfy the following condition: 3.3≤F5 / F≤14.

60. The optical lens according to any one of claims 30 to 42, characterized in that, Meet one of the following: The thickness d34 of the cemented lens formed by the third lens and the fourth lens and the total length TTL of the optical lens satisfy the following condition: 0.150≤d34 / TTL≤0.167; The focal length F5 of the fifth lens and the focal length F6 of the sixth lens satisfy the following condition: 0.813 ≤ |F5 / F6| ≤ 2.106; The air gap d12 between the first lens and the second lens and the total length TTL of the optical lens satisfy the following condition: 0.170≤d12 / TTL≤0.208; The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radians θ of the maximum field of view of the optical lens satisfy the following relationship: 0.108 ≤ |HF θ) / (F θ)|≤0.119; The radius of curvature R2 of the second side of the first lens and the maximum half-aperture D2 of the second side of the first lens corresponding to the maximum field of view of the optical lens satisfy the following relationship: 0.770≤R2 / D2≤0.833; The image height H corresponding to the maximum field of view of the optical lens, the total focal length F of the optical lens, and the radian θ of the maximum field of view of the optical lens satisfy the following relationship: 0.997 ≤ (H / 2) / (F) tan(θ / 2))≤1.018; The maximum aperture D of the first side 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 FOV of the optical lens satisfy the following condition: 0.029≤D / H / FOV≤0.031; The optical back focal length BFL of the optical lens and the lens group length TL of the optical lens satisfy the following condition: 0.378≤BFL / TL≤0.412; The radius of curvature R1 of the first side surface of the first lens, the radius of curvature R2 of the second side surface of the first lens, the maximum half-aperture D1 of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, and the maximum half-aperture D2 of the second side surface of the first lens corresponding to the maximum field of view of the optical lens satisfy the following condition: 4.189≤(R1 / D1) / (R2 / D2)≤13.315; The total length (TTL) of the optical lens and the maximum effective aperture (DMAX) of the optical lens satisfy the following condition: 3.791 ≤ TTL / DMAX ≤ 3.991; The focal length F34 of the cemented lens formed by the third lens and the fourth lens, and the total focal length F of the optical lens satisfy the following condition: 4.381≤|F34 / F|≤14.131; The sagitta sag9 of the first side of the fifth lens and the sagitta sag10 of the second side of the fifth lens satisfy the following condition: 0.869≤|sag9 / sag10|≤3.324; The focal length F1 of the first lens, the radius of curvature R2 of the second side surface of the first lens, the focal length F2 of the second lens, and the radius of curvature R3 of the first side surface of the second lens satisfy the following condition: -2.174≤F1 / R2+F2 / R3≤-1.283; The sagitta sag1 of the first side surface of the first lens and the sagitta sag2 of the second side surface of the first lens satisfy the following condition: 0.084≤|sag1 / sag2|≤0.243; The air gap d45 between the second side surface of the second lens and the first side surface of the third lens, and the total length TTL of the optical lens satisfy the following condition: 0.059≤d45 / TTL≤0.137; The focal length F1 of the first lens and the total focal length F of the optical lens satisfy the following condition: -1.608 ≤ F1 / F ≤ -1.313; The focal length F5 of the fifth lens and the total focal length F of the optical lens satisfy the following condition: 4.952≤F5 / F≤9.

357.

61. An electronic device, characterized in that, It includes an optical lens according to any one of claims 1 to 60 and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

Images