Optical lenses and electronic equipment

Abstract

The present disclosure provides an optical lens and an electronic device. The optical lens comprises, in order from the first side to the second side along the optical axis, a first lens with negative optical power, a second lens with positive optical power, a third lens with positive optical power, a fourth lens, a fifth lens and a sixth lens; the first side surface of the fifth lens is convex, and the second side surface is concave; the first side surface of the sixth lens is convex, and the second side surface is concave; the number of lenses with optical power in the optical lens is six; the optical lens satisfies: 0.07≤T12 / TTL≤0.4, 0.1≤R9 / TTL≤2 and 0.05≤R10 / TTL≤2, wherein T12 is the on-axis distance from the second side surface of the first lens to the first side surface of the second lens, TTL is the total optical length of the optical lens, R9 is the curvature radius of the first side surface of the fifth lens, and R10 is the curvature radius of the second side surface of the fifth lens.

Description

Technical Field

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

[0002] With the continuous development of science and technology, optical lenses are widely used in the fields of intelligent automobile industry, and higher requirements are put forward for optical lenses. For example, optical lenses are developing in the direction of high resolution and miniaturization. However, in order to achieve the high resolution characteristics of optical lenses, the diameter of optical lenses is relatively large. For example, the diameter of the rear port of optical lenses is relatively large, which is not conducive to the miniaturization of optical lenses. Summary of the invention

[0003] A first aspect of the present disclosure provides an optical lens, which includes, in order from a first side to a second side along an optical axis: a first lens with negative optical power, a second lens with positive optical power, a third lens with positive optical power, a fourth lens with optical power, a fifth lens with optical power, and a sixth lens with optical power; the first side surface of the fifth lens is convex, and the second side surface is concave; the first side surface of the sixth lens is convex, and the second side surface is concave; wherein the number of lenses with optical power in the optical lens is six; the axial distance T12 from the second side surface of the first lens to the first side surface of the second lens satisfies the following conditions: 0.07≤T12 / TTL≤0.4; the curvature radius R9 of the first side surface of the fifth lens satisfies the following conditions: 0.1≤R9 / TTL≤2; the curvature radius R10 of the second side surface of the fifth lens satisfies the following conditions: 0.05≤R10 / TTL≤2.

[0004] The second aspect of the present disclosure provides such an electronic device, which includes the optical lens in the above embodiment. The electronic device also includes at least one of an imaging element and a light source, wherein the imaging element is used to convert an optical image or optical information formed by the optical lens into an electrical signal; the light source is located on the second side of the optical lens, and the light emitted by the light source is projected to the first side of the optical lens after passing through the optical lens, and forms an image or illuminates an area on the first side of the optical lens.

[0005] The optical lens provided by the present disclosure uses six lenses, wherein the first lens has negative optical power; the second lens has positive optical power; the third lens has positive optical power; the fourth lens has optical power; the fifth lens has optical power, and its first side surface is convex and its second side surface is concave; the sixth lens has optical power, and its first side surface is convex and its second side surface is concave. The light diffused by the first lens passes through the gap between the first lens and the second lens, and the on-axis distance from the second side surface of the first lens to the first side surface of the second lens is reasonably configured, that is, 0.07≤T12 / TTL≤0.4, so that the light emitted from the first lens can be appropriately diverged at the gap, and the light trend is gentle, which is conducive to reducing the sensitivity of the first lens while improving the resolution of the optical lens. The light enters the second, third and fourth lenses at the rear smoothly, and the three lenses can converge the light diffused by the first lens in front as a whole. The converged light enters the fifth lens at the rear, and the ratios of the curvature radius of the first side surface of the fifth lens and the curvature radius of the second side surface to the total optical length of the optical lens are reasonably configured, namely 0.1≤R9 / TTL≤2, 0.05≤R10 / TTL≤2. The converged light can be further adjusted for aberration processing, and the light emitted from the fourth lens is deflected toward the direction close to the optical axis through the first side surface of the fifth lens, so that the light is properly converged, which is beneficial to reducing the rear port diameter of the optical lens and realizing the miniaturization of the optical lens. At the same time, it also ensures that the light is output through the second side surface as much as possible without being lost, and the marginal light and the paraxial light are better converged on the same point, thereby improving the resolution of the optical lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Other features, objects and advantages of the present disclosure will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings, in which:

[0007] Figure 1 A schematic structural diagram of an optical lens according to Embodiment 1 of the present disclosure is shown;

[0008] Figure 2 A schematic structural diagram of an optical lens according to Embodiment 2 of the present disclosure is shown;

[0009] Figure 3 A schematic structural diagram of an optical lens according to Embodiment 3 of the present disclosure is shown;

[0010] Figure 4 A schematic structural diagram of an optical lens according to Embodiment 4 of the present disclosure is shown;

[0011] Figure 5 A schematic structural diagram of an optical lens according to Embodiment 5 of the present disclosure is shown;

[0012] Figure 6A schematic structural diagram of an optical lens according to Embodiment 6 of the present disclosure is shown;

[0013] Figure 7 A schematic structural diagram of an optical lens according to Embodiment 7 of the present disclosure is shown;

[0014] Figure 8 A schematic structural diagram of an optical lens according to Embodiment 8 of the present disclosure is shown;

[0015] Fig. 9 A schematic structural diagram of an optical lens according to Embodiment 9 of the present disclosure is shown;

[0016] Fig.10 A schematic structural diagram of an optical lens according to Embodiment 10 of the present disclosure is shown;

[0017] Fig.11 A schematic structural diagram of an optical lens according to Embodiment 11 of the present disclosure is shown;

[0018] Fig.12 A schematic structural diagram of an optical lens according to Embodiment 12 of the present disclosure is shown;

[0019] Fig.13 A schematic structural diagram of an optical lens according to Embodiment 13 of the present disclosure is shown;

[0020] Fig.14 A schematic structural diagram of an optical lens according to Embodiment 14 of the present disclosure is shown;

[0021] Fig.15 A schematic structural diagram of an optical lens according to Embodiment 15 of the present disclosure is shown;

[0022] Fig.16 A schematic structural diagram of an optical lens according to Embodiment 16 of the present disclosure is shown;

[0023] Fig.17 A schematic structural diagram of an optical lens according to Embodiment 17 of the present disclosure is shown;

[0024] Fig.18 A schematic structural diagram of an optical lens according to Embodiment 18 of the present disclosure is shown;

[0025] Fig.19 A schematic structural diagram of an optical lens according to Embodiment 19 of the present disclosure is shown;

[0026] Fig. 20 A schematic structural diagram of an optical lens according to Embodiment 20 of the present disclosure is shown;

[0027] Fig.21 A schematic structural diagram of an optical lens according to Embodiment 21 of the present disclosure is shown;

[0028] Fig. 22 A schematic structural diagram of an optical lens according to Embodiment 22 of the present disclosure is shown;

[0029] Fig.23 A schematic structural diagram of an optical lens according to Embodiment 23 of the present disclosure is shown;

[0030] Fig.24 A schematic structural diagram of an optical lens according to Embodiment 24 of the present disclosure is shown;

[0031] Fig.25 shows a schematic structural diagram of an optical lens according to Example 25 of the present disclosure;

[0032] Fig.26 shows a schematic structural diagram of an optical lens according to Example 26 of the present disclosure;

[0033] Fig. 27 shows a schematic structural diagram of an optical lens according to Example 27 of the present disclosure;

[0034] Fig.28 shows a schematic structural diagram of an optical lens according to Example 28 of the present disclosure;

[0035] Fig.29 shows a schematic structural diagram of an optical lens according to Example 29 of the present disclosure;

[0036] Fig.30 A schematic structural diagram of an optical lens according to Embodiment 30 of the present disclosure is shown;

[0037] Fig.31 A schematic structural diagram of an optical lens according to Embodiment 31 of the present disclosure is shown;

[0038] Fig.32 A schematic structural diagram of an optical lens according to Embodiment 32 of the present disclosure is shown;

[0039] Fig.33 shows a schematic structural diagram of an optical lens according to Example 33 of the present disclosure;

[0040] Fig.34 shows a schematic structural diagram of an optical lens according to Example 34 of the present disclosure;

[0041] Fig.35 shows a schematic structural diagram of an optical lens according to Example 35 of the present disclosure;

[0042] Fig.36 shows a schematic structural diagram of an optical lens according to Example 36 of the present disclosure;

[0043] Fig.37 shows a schematic structural diagram of an optical lens according to Example 37 of the present disclosure;

[0044] Fig.38 A schematic structural diagram of an optical lens according to Example 38 of the present disclosure is shown;

[0045] Fig.39 A schematic structural diagram of an optical lens according to Embodiment 39 of the present disclosure is shown;

[0046] Fig.40 A schematic structural diagram of an optical lens according to embodiment 40 of the present disclosure is shown;

[0047] Fig.41 A schematic structural diagram of an optical lens according to Embodiment 41 of the present disclosure is shown;

[0048] Fig.42 A schematic structural diagram of an optical lens according to Embodiment 42 of the present disclosure is shown;

[0049] Fig.43 shows a modulation transfer function curve of the optical lens according to Example 16 of the present disclosure;

[0050] Fig.44 shows a modulation transfer function curve of the optical lens according to Example 17 of the present disclosure;

[0051] Fig.45 A modulation transfer function curve of the optical lens according to Example 22 of the present disclosure is shown. DETAILED DESCRIPTION

[0052] In order to better understand the present disclosure, a more detailed description will be made of various aspects of the present disclosure with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present disclosure, and do not limit the scope of the present disclosure in any way. Throughout the specification, the same figure numerals refer to the same elements.

[0053] It should be noted that in this specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teaching of the present disclosure, the first lens discussed below may also be referred to as the second lens or the third lens.

[0054] In the 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 shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the shapes of the spherical or aspherical surfaces shown in the drawings. The drawings are for illustration only and are not drawn strictly to scale.

[0055] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the first side is called the first side surface of the lens, and the surface of each lens closest to the second side is called the second side surface of the lens.

[0056] It should also be understood that the terms "include", "comprising", and / or "having", when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. In addition, when describing embodiments of the present disclosure, the term "may" is used to indicate "one or more embodiments of the present disclosure". Furthermore, the term "exemplary" is intended to refer to an example or illustration.

[0057] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present disclosure belongs. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in this document.

[0058] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other. The present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0059] The features, principles and other aspects of the present disclosure are described in detail below.

[0060] The optical lens according to an exemplary embodiment of the present disclosure may include, for example, six lenses having optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, and the six lenses are arranged in sequence from the first side to the second side along the optical axis.

[0061] In an exemplary embodiment, the optical lens may be used as, for example, an imaging lens, in which case the first side of the optical lens may be an object side and the second side may be an image side. Light from the object side may be imaged on the image side. The second side of the optical lens is provided with an imaging surface of the optical lens.

[0062] In an exemplary embodiment, the optical lens can be used as, for example, a projection lens or a laser radar transmitting end lens. In this case, the second side of the optical lens can be an image source side, and the first side can be an imaging side. Light from the image source side can be imaged on the imaging side. The second side of the optical lens is provided with an image source surface of the optical lens.

[0063] In an exemplary embodiment, the first lens may have a negative optical power, and its first side surface may be, for example, a concave surface, and its second side surface may be, for example, a convex surface. The first lens is designed as a negative lens concave toward the first side, which is conducive to the first lens diverging the light, thereby expanding the physical aperture of the aperture, achieving a larger amount of light entering the optical lens, and increasing the illumination of the image of the optical lens; at the same time, the second side surface of the first lens is a convex surface, which can make the light emitted from the first lens smoothly transition to the rear optical system, reducing the sensitivity of the optical lens.

[0064] In an exemplary embodiment, the first lens may have a negative optical power, and its first side surface may be, for example, a concave surface, and its second side surface may be, for example, a concave surface. The first lens is designed as a double concave negative lens, which is conducive to collecting as much light of a large field of view as possible and smoothly diffusing the light to the rear optical system, thereby increasing the light throughput of the optical lens.

[0065] In an exemplary embodiment, the first lens may have a negative optical focal length, and its first side surface may be, for example, a convex surface, and the second side surface may be, for example, a concave surface. The first lens is designed as a negative lens, which has a divergent effect on light and can disperse the central light and edge light of each field of view. Under the same field of view angle, the second side surface of the first lens is a concave surface, which can make the rear optical system have a larger light receiving surface, which is conducive to expanding the physical aperture of the aperture, achieving a larger amount of light entering the optical lens, and increasing the image illumination of the optical lens; at the same time, the first side surface of the first lens is a convex surface, which cooperates with the second side surface, so that the light emitted from the first lens can smoothly transition to the rear optical system, reducing the sensitivity of the optical lens. As an example, the first side surface of the first lens is a convex surface, which is conducive to the sliding of water droplets and reduces the influence of external environment such as water droplets on the imaging quality.

[0066] In an exemplary embodiment, the second lens may have a positive optical power, and its first side surface may be, for example, a concave surface, and the second side surface may be, for example, a convex surface. The second lens plays the role of connecting the front optical system and the rear optical system in the optical lens. By designing the second lens as a positive lens, the light of the front optical system can be deflected at a smaller angle and smoothly transitioned to the rear optical system, thereby reducing the sensitivity of the optical lens while better correcting aberrations, and improving the resolution of the optical lens. For example, the second lens can receive the divergent light from the first lens, reduce the degree of deflection of the light, and make the light converge to the third lens to a certain extent, thereby reducing the sensitivity of the optical lens while better correcting aberrations, and improving the resolution of the optical lens.

[0067] In an exemplary embodiment, the second lens may have positive focal power, and its first side surface may be, for example, a convex surface, and its second side surface may be, for example, a concave surface. The second lens is designed as a positive lens convex to the first side, which can collect as much light as possible to enter the rear optical system. At the same time, the second side surface of the second lens is a concave surface, which can make the light enter the rear optical system smoothly, which is conducive to reducing the sensitivity of the optical lens and reducing the front port diameter of the optical lens.

[0068] In an exemplary embodiment, the second lens may have positive focal power, and its first side surface may be, for example, a convex surface, and the second side surface may be, for example, a plane surface. The second lens is designed as a positive lens convex to the first side, which can collect as much light as possible to enter the rear optical system. At the same time, the second side surface of the second lens is a plane surface, which can increase the optical path of the light emitted from the first side surface of the second lens, and make the light emitted from the second side surface of the second lens smoothly enter the rear optical system, which is conducive to reducing the sensitivity of the optical lens.

[0069] In an exemplary embodiment, the second lens may have positive focal power, and its first side surface may be, for example, a convex surface, and its second side surface may be, for example, a convex surface. The second lens is designed as a positive lens convex to the first side, which can collect as much light as possible to enter the rear optical system. At the same time, the second side surface of the second lens is a convex surface, which can make the light quickly transition to the rear optical system and reduce the aperture of the optical lens.

[0070] In an exemplary embodiment, the third lens may have positive optical power, and its first side surface may be, for example, a concave surface, and its second side surface may be, for example, a convex surface. The third lens is a meniscus lens concave toward the first side, capable of converging the light emitted from the second lens and allowing the light to smoothly transition to the rear optical system.

[0071] In an exemplary embodiment, the third lens may have positive optical power, and its first side surface may be, for example, a convex surface, and its second side surface may be, for example, a concave surface. The third lens is a meniscus lens convex to the first side, which can converge the light emitted from the second lens and make the light smoothly transition to the rear optical system so that the rear optical system can converge the light.

[0072] In an exemplary embodiment, the third lens may have positive optical power, and its first side surface may be, for example, a convex surface, and its second side surface may be, for example, a plane surface. The third lens is a positive lens convex to the first side, and can collect as much light as possible to enter the rear optical system. At the same time, the second side surface of the third lens is a plane surface, which can increase the optical path of the light emitted from the first side surface of the third lens, and make the light emitted from the second side surface of the third lens smoothly enter the rear optical system, which is conducive to reducing the sensitivity of the optical lens.

[0073] In an exemplary embodiment, the third lens may have positive optical power, and its first side surface may be, for example, a convex surface, and its second side surface may be, for example, a convex surface. The third lens is a biconvex positive lens, which is conducive to compressing the light emitted from the second lens, thereby reducing the aperture of the rear lens.

[0074] In an exemplary embodiment, the fourth lens may have positive focal power, and its first side surface may be, for example, a convex surface, and its second side surface may be, for example, a concave surface. The fourth lens is designed as a convex-concave positive lens, which can make the light transition to the rear optical system as smoothly as possible, which is conducive to reducing the sensitivity of the optical lens and reducing the rear port diameter of the optical lens.

[0075] In an exemplary embodiment, the fourth lens may have positive optical power, and its first side surface may be, for example, a convex surface, and its second side surface may be, for example, a convex surface. The fourth lens is designed as a positive lens convex to the first side, which can collect as much light as possible to enter the rear optical system, and the second side surface of the fourth lens is a convex surface, which can make the light quickly transition to the rear optical system and reduce the aperture of the optical lens.

[0076] In an exemplary embodiment, the fourth lens may have a negative optical power, and its first side surface may be, for example, a convex surface, and its second side surface may be, for example, a concave surface. The fourth lens is designed as a meniscus-shaped negative lens, which can collect as much light as possible in a large field of view and appropriately diverge the collected light, which is conducive to correcting aberrations and improving the resolution of the optical lens.

[0077] In an exemplary embodiment, the fourth lens may have a negative optical power, and its first side surface may be, for example, a concave surface, and its second side surface may be, for example, a concave surface. The fourth lens is designed as a double concave negative lens, which can collect as much light of a large field of view as possible and diffuse the light smoothly to the rear optical system, thereby increasing the light throughput of the optical lens.

[0078] In an exemplary embodiment, the fourth lens may have a negative optical power, and its first side surface may be, for example, a concave surface, and its second side surface may be, for example, a convex surface. The fourth lens is designed as a meniscus-shaped negative lens, which can collect as much light as possible in a large field of view and appropriately diverge the collected light, which is conducive to correcting aberrations and improving the resolution of the optical lens.

[0079] In an exemplary embodiment, the fifth lens may have positive focal power, and its first side surface may be, for example, a convex surface, and its second side surface may be, for example, a concave surface. The fifth lens is designed as a convex-concave positive lens, which can collect as much light as possible to enter the rear optical system. At the same time, the second side surface of the fifth lens is a concave surface, which can make the light smoothly transition to the rear optical system, which is conducive to reducing the sensitivity of the optical lens and reducing the rear port diameter of the optical lens.

[0080] In an exemplary embodiment, the fifth lens may have a negative optical power, and its first side surface may be, for example, a convex surface, and its second side surface may be, for example, a concave surface. The fifth lens is designed as a meniscus-shaped negative lens, and the shape of the fifth lens is close to a concentric circle structure, which can collect as much light of a large field of view as possible and make the light smoothly transition to the rear optical system. At the same time, the first side surface of the fifth lens is a convex surface, which can reduce the back focal length of the optical lens to a certain extent, thereby reducing the total optical length of the optical lens.

[0081] In an exemplary embodiment, the sixth lens may have positive optical power, and its first side surface may be, for example, a convex surface, and its second side surface may be, for example, a concave surface. The sixth lens is designed as a convex-concave positive lens, which can collect as much light as possible to enter the rear optical system. At the same time, the second side surface of the sixth lens is a concave surface, which can make the light smoothly transition to the imaging surface or image source surface of the second side, which is conducive to reducing the sensitivity of the optical lens and reducing the rear port diameter of the optical lens.

[0082] In an exemplary embodiment, the sixth lens may have a negative optical power, and its first side surface may be, for example, a convex surface, and its second side surface may be, for example, a concave surface. The sixth lens is designed as a meniscus-shaped negative lens, which can collect as much light as possible in a large field of view and properly diverge the light, which is conducive to correcting aberrations and improving the resolution of the optical lens.

[0083] In an exemplary embodiment, the optical lens may further include an aperture, which may be, for example, disposed between the second lens and the third lens, or, for example, disposed between the third lens and the fourth lens, or, for example, disposed between the fourth lens and the fifth lens. By providing the aperture, it is beneficial for the light to smoothly transition to the rear optical system, reduce the aperture of the rear lens, and reduce the assembly sensitivity of the optical lens. It should be understood that the position of the aperture is only exemplary, and the present disclosure does not impose specific limitations on this, and the aperture may also be disposed at other positions according to actual needs.

[0084] In an exemplary embodiment, the optical lens may further include a photosensitive element disposed on the second side. Optionally, the photosensitive element disposed on the second side may be, for example, a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS).

[0085] In an exemplary embodiment, the optical lens may further include a filter between the sixth lens and the imaging surface or the image source surface to filter light with different wavelengths. The optical lens may also be provided with a protective glass between the filter and the imaging surface according to actual needs to prevent internal components (e.g., chips) of the optical lens from being damaged.

[0086] In an exemplary embodiment, one or more aspherical surfaces may be provided on the surfaces of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens. The aspherical surface has better radius of curvature characteristics, and has the advantages of improving distortion aberration and improving aberration. By using the aspherical surface, it is possible to eliminate as much as possible the aberration that occurs during imaging, thereby improving the imaging quality.

[0087] In an exemplary embodiment, the total effective focal length F of the optical lens and the entrance pupil diameter ENPD of the optical lens may satisfy: 0.5 ≤ F / ENPD ≤ 1.3. Further, 0.7 ≤ F / ENPD ≤ 1.1. Reasonably configuring the ratio of the total effective focal length of the optical lens to the entrance pupil diameter of the optical lens is beneficial to achieving a large aperture of the optical lens and increasing the light transmission amount of the optical lens.

[0088] In an exemplary embodiment, the overall optical length TTL of the optical lens and the total effective focal length F of the optical lens may satisfy: 2.2 ≤ TTL / F ≤ 5.7. Further, 2.9 ≤ TTL / F ≤ 5.1. Reasonably configuring the ratio of the overall optical length of the optical lens to the total effective focal length of the optical lens is beneficial to achieving the characteristics of long focal length and miniaturization of the optical lens.

[0089] In an exemplary embodiment, the overall optical length TTL of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, and the maximum field of view angle FOV of the optical lens may satisfy: 0.12 ≤ TTL / H / FOV × 1° ≤ 0.34. Further, 0.17 ≤ TTL / H / FOV × 1° ≤ 0.3. Reasonably configuring the relationship among the overall optical length of the optical lens, the image height corresponding to the maximum field of view angle of the optical lens, and the maximum field of view angle of the optical lens is beneficial to achieving the characteristics of miniaturization and large image plane of the optical lens.

[0090] In an exemplary embodiment, the overall optical length TTL of the optical lens and the back focal length BFL of the optical lens may satisfy: 0 < BFL / TTL ≤ 0.20. Further, 0.07 ≤ BFL / TTL ≤ 0.17. Reasonably configuring the ratio of the back focal length of the optical lens to the overall optical length of the optical lens can enable the optical lens to have a smaller back focal length. While leaving enough space for the installation of other optical elements and the focusing of the optical lens, it is beneficial to reduce the overall optical length of the optical lens and achieve the miniaturization of the optical lens.

[0091] In an exemplary embodiment, the maximum clear aperture D of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, and the maximum field of view angle FOV of the optical lens may satisfy: 0 < D / H / FOV × 1° ≤ 0.14. Further, 0.07 ≤ D / H / FOV × 1° ≤ 0.12. Reasonably configuring the relationship between the maximum clear aperture of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, the image height corresponding to the maximum field of view angle of the optical lens, and the maximum field of view angle of the optical lens is beneficial to realizing the characteristics of miniaturization and large image plane of the optical lens.

[0092] In an exemplary embodiment, the maximum clear aperture D of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, and the total effective focal length F of the optical lens may satisfy: 0.1 mm -1 ≤ D / H / F ≤ 0.25 mm -1 。 Further, 0.13 mm -1 ≤ D / H / F ≤ 0.22 mm -1 。 Reasonably configuring the relationship between the maximum clear aperture of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, the image height corresponding to the maximum field of view angle of the optical lens, and the total effective focal length of the optical lens is beneficial to realizing the characteristics of long focal length, miniaturization and large image plane of the optical lens.

[0093] In an exemplary embodiment, the total effective focal length F of the optical lens, the radian value θ of the maximum field of view angle of the optical lens, and the maximum clear aperture D of the first side of the first lens corresponding to the maximum field of view angle of the optical lens may satisfy: 0.2 ≤ (F × θ) / D ≤ 0.51. Further, 0.26 ≤ (F × θ) / D ≤ 0.45. Reasonably configuring the relationship between the total effective focal length of the optical lens, the radian value of the maximum field of view angle of the optical lens, and the maximum clear aperture of the first side of the first lens corresponding to the maximum field of view angle of the optical lens is beneficial to reducing the front aperture of the optical lens, thereby reducing the volume of the optical lens and realizing the miniaturization characteristic of the optical lens.

[0094] In an exemplary embodiment, the maximum field of view angle FOV of the optical lens, the total effective focal length F of the optical lens, and the image height H corresponding to the maximum field of view angle of the optical lens may satisfy: 53° ≤ (FOV × F) / H ≤ 62°. Further, 54° ≤ (FOV × F) / H ≤ 61°. Reasonably configuring the relationship between the maximum field of view angle of the optical lens, the total effective focal length of the optical lens, and the image height corresponding to the maximum field of view angle of the optical lens is beneficial to realizing the miniaturization characteristic of the optical lens when the total effective focal length and image height of the optical lens are certain.

[0095] In an exemplary embodiment, the effective focal length F1 of the first lens and the total effective focal length F of the optical lens may satisfy: -5.6≤F1 / F≤-0.6. Further, -4.6≤F1 / F≤-1.6. Reasonable configuration of the ratio of the effective focal length of the first lens to the total effective focal length of the optical lens can make the light diverge smoothly after passing through the first lens, thereby improving the resolution of the optical lens.

[0096] In an exemplary embodiment, the effective focal length F2 of the second lens and the total effective focal length F of the optical lens may satisfy: 1≤F2 / F≤15. Further, 2.0≤F2 / F≤11.5. Reasonable configuration of the ratio of the effective focal length of the second lens to the total effective focal length of the optical lens can make the divergent light emitted from the first lens converge in a smaller and more stable manner after passing through the second lens, reduce the degree of light deflection, and improve the resolution of the optical lens.

[0097] In an exemplary embodiment, the effective focal length F3 of the third lens and the total effective focal length F of the optical lens may satisfy: 1≤F3 / F≤25. Further, 2.2≤F3 / F≤18. Reasonable configuration of the ratio of the effective focal length of the third lens to the total effective focal length of the optical lens can adjust the deflection angle of the light emitted from the second lens, and make the light converge smoothly after passing through the third lens, reduce the deflection degree of the light, and improve the resolution of the optical lens.

[0098] In an exemplary embodiment, the effective focal length F4 of the fourth lens and the total effective focal length F of the optical lens may satisfy: 1≤|F4| / F≤36. Further, 1.4≤|F4| / F≤22.2. When the fourth lens has positive focal power, the ratio of the absolute value of the effective focal length of the fourth lens to the total effective focal length of the optical lens is reasonably configured, so that the deflection angle of the light emitted from the third lens can be adjusted, and the light can be smoothly converged after passing through the fourth lens, thereby reducing the degree of deflection of the light and improving the resolution of the optical lens. When the fourth lens has negative focal power, the ratio of the absolute value of the effective focal length of the fourth lens to the total effective focal length of the optical lens is reasonably configured, so that the light emitted from the third lens can be appropriately diverged, the optical path of the light of the edge field of view can be increased, and when the absolute value of the effective focal length of the fourth lens is large, a smooth transition of the light can be achieved, thereby improving the resolution of the optical lens.

[0099] In an exemplary embodiment, the effective focal length F5 of the fifth lens and the total effective focal length F of the optical lens may satisfy: 1.3≤|F5| / F≤17. Further, 1.8≤|F5| / F≤12.5. When the fifth lens has positive focal power, a reasonable configuration of the ratio of the absolute value of the effective focal length of the fifth lens to the total effective focal length of the optical lens can make the absolute value of the effective focal length of the fifth lens smaller, which is beneficial for the fifth lens to quickly converge the light emitted from the fourth lens, thereby improving the resolution of the optical lens. When the fifth lens has negative focal power, a reasonable configuration of the ratio of the absolute value of the effective focal length of the fifth lens to the total effective focal length of the optical lens can make the absolute value of the effective focal length of the fifth lens smaller and appropriately diverge the light emitted from the fourth lens, increase the optical path of the light of the edge field of view, and facilitate the smooth transition of the light to the rear optical system.

[0100] In an exemplary embodiment, the effective focal length F6 of the sixth lens and the total effective focal length F of the optical lens may satisfy: 1.3≤|F6| / F≤27. Further, 1.4≤|F6| / F≤17.5. When the sixth lens has positive optical power, the ratio of the absolute value of the effective focal length of the sixth lens to the total effective focal length of the optical lens is reasonably configured, so that the sixth lens can converge the light emitted from the fifth lens, and when the absolute value of the effective focal length of the sixth lens is large, a smooth transition of the light can be achieved, which is beneficial to improving the resolution of the optical lens. When the sixth lens has negative optical power, the ratio of the absolute value of the effective focal length of the sixth lens to the total effective focal length of the optical lens is reasonably configured, so that the sixth lens can appropriately diverge the light emitted from the fifth lens, increase the optical path of the light of the edge field of view, and when the absolute value of the effective focal length of the sixth lens is large, it is beneficial to achieve a smooth transition of the light.

[0101] In an exemplary embodiment, the radius of curvature R1 of the first side surface of the first lens and the effective focal length F1 of the first lens may satisfy: -17≤|R1| / F1≤-0.1. Further, -10.5≤|R1| / F1≤-0.2. When the first side surface of the first lens is a convex surface, by controlling the absolute value of the radius of curvature of the first side surface of the first lens to be constrained within a reasonable range, the rear optical system can have a larger light receiving surface, which is beneficial to expanding the physical aperture of the aperture, achieving a larger amount of light entering the optical lens, and increasing the illumination of the image of the optical lens. When the first side surface of the first lens is a concave surface, the first side surface of the first lens has a divergent effect on the light. By controlling the absolute value of the radius of curvature of the first side surface of the first lens to be constrained within a reasonable range, the incident angle of the large field of view light on the first side surface of the first lens can be increased, thereby increasing the deflection angle of the light in the first lens, which is beneficial to collect as much large field of view light as possible and improve the light throughput of the optical lens.

[0102] In an exemplary embodiment, the radius of curvature R9 of the first side surface of the fifth lens and the radius of curvature R10 of the second side surface of the fifth lens may satisfy: 0.1≤R9 / R10≤3.9. Further, 0.3≤R9 / R10≤2.5. By properly configuring the ratio of the radius of curvature of the first side surface to the second side surface of the fifth lens, the fifth lens can be used to adjust the deflection angle of the converging light from the fourth lens, avoid excessive deflection of the light, make the light trend smooth, and reduce the sensitivity of the fifth lens while improving the resolution of the optical lens.

[0103] In an exemplary embodiment, the radius of curvature R9 of the first side surface of the fifth lens, the radius of curvature R10 of the second side surface of the fifth lens, and the center thickness CT5 of the fifth lens on the optical axis may satisfy: 0.2≤R9 / (CT5+R10)≤3.2. Further, 0.28≤R9 / (CT5+R10)≤2.1. The fifth lens is designed to be meniscus-shaped, and the relationship between the radius of curvature of the first side surface and the second side surface of the fifth lens and the center thickness of the fifth lens is reasonably configured, so that there is an optical path difference between the edge field of view light and the center field of view light, and the light is made to transition to the rear optical system as smoothly as possible, which is conducive to reducing the sensitivity of the optical lens and improving the resolution of the optical lens.

[0104] In an exemplary embodiment, the radius of curvature R11 of the first side surface of the sixth lens and the total optical length TTL of the optical lens may satisfy: 0.01≤R11 / TTL≤0.57. Further, 0.10≤R11 / TTL≤0.42. Reasonable configuration of the ratio of the radius of curvature of the first side surface of the sixth lens to the total optical length of the optical lens can cause the first side surface of the sixth lens to deflect the light emitted from the fifth lens toward the direction close to the optical axis, which is beneficial to reducing the rear port diameter of the optical lens.

[0105] In an exemplary embodiment, the radius of curvature R12 of the second side surface of the sixth lens and the total optical length TTL of the optical lens may satisfy: 0.01≤R12 / TTL≤0.58. Further, 0.12≤R12 / TTL≤0.47. Reasonable configuration of the ratio of the radius of curvature of the second side surface of the sixth lens to the total optical length of the optical lens can make the light smoothly transition to the imaging surface or image source surface of the second side, which is conducive to reducing the sensitivity of the optical lens and improving the resolution of the optical lens.

[0106] In an exemplary embodiment, the radius of curvature R11 of the first side surface of the sixth lens and the radius of curvature R12 of the second side surface of the sixth lens may satisfy: 0.2≤R11 / R12≤2.1. Further, 0.59≤R11 / R12≤1.7. The sixth lens is meniscus-shaped and the first side surface and the second side surface of the sixth lens are oriented in the same direction. The sixth lens converges the light. By controlling the ratio of the radius of curvature of the first side surface to the second side surface of the sixth lens, the central spherical aberration, edge field curvature, and astigmatism value introduced by the sixth lens are effectively reduced, thereby improving the image quality of the optical lens.

[0107] In an exemplary embodiment, the radius of curvature R11 of the first side surface of the sixth lens, the radius of curvature R12 of the second side surface of the sixth lens, and the total effective focal length F of the optical lens may satisfy: 0.01≤F / R11+F / R12≤4.6. Further, 0.9≤F / R11+F / R12≤3.7. The sixth lens is meniscus-shaped, and by controlling the relationship between the radius of curvature of the first side surface and the second side surface of the sixth lens and the total effective focal length of the optical lens, astigmatism can be effectively corrected and the resolution of the optical lens can be improved.

[0108] In an exemplary embodiment, the radius of curvature R11 of the first side surface of the sixth lens, the radius of curvature R12 of the second side surface of the sixth lens, and the center thickness CT6 of the sixth lens on the optical axis may satisfy: 0.17≤R11 / (CT6+R12)≤1.36. Further, 0.4≤R11 / (CT6+R12)≤1.2. The sixth lens is designed to be meniscus-shaped, and the relationship between the radius of curvature of the first side surface and the second side surface of the sixth lens and the center thickness of the sixth lens is reasonably configured, so that there is an optical path difference between the edge field of view light and the center field of view light, and the light is made to smoothly transition to the imaging surface or the image source surface of the second side as much as possible, which is conducive to reducing the sensitivity of the optical lens and improving the resolution of the optical lens.

[0109] In an exemplary embodiment, the image height H corresponding to the maximum field angle of the optical lens, the total effective focal length F of the optical lens, and the radian value θ of the maximum field angle of the optical lens may satisfy: -0.08≤(H / 2-F×θ / 2) / (F×θ / 2)≤0.08. Furthermore, -0.05≤(H / 2-F×θ / 2) / (F×θ / 2)≤0.05. Reasonable configuration of the relationship between the image height corresponding to the maximum field angle of the optical lens, the total effective focal length of the optical lens, and the radian value of the maximum field angle of the optical lens can reduce the difference between the ideal image height and the actual image height of the optical lens when the maximum field angle of the optical lens is the same, which is beneficial to reducing the distortion of the optical lens.

[0110] In an exemplary embodiment, the maximum clear aperture D10 of the second side of the fifth lens corresponding to the maximum field angle of the optical lens, the back focal length BFL of the optical lens, and the image height H corresponding to the maximum field angle of the optical lens may satisfy: 5mm≤D10×BFL / H≤53mm. Further, 7mm≤D10×BFL / H≤37mm. Reasonable configuration of the relationship between the maximum clear aperture of the second side of the fifth lens corresponding to the maximum field angle of the optical lens, the back focal length of the optical lens, and the image height corresponding to the maximum field angle of the optical lens, under the condition of the same image height, can enable the optical lens to have a smaller back focal length, thereby reducing the total optical length of the optical lens, which is conducive to realizing the miniaturization of the optical lens.

[0111] In an exemplary embodiment, the maximum light-clearance diameter D of the first side surface of the first lens corresponding to the maximum field angle of the optical lens and the maximum light-clearance diameter D10 of the second side surface of the fifth lens corresponding to the maximum field angle of the optical lens may satisfy: 0.1≤D / D10≤3.6. Further, 0.8≤D / D10≤3. Reasonable configuration of the ratio of the maximum light-clearance diameter of the first side surface of the first lens corresponding to the maximum field angle of the optical lens to the maximum light-clearance diameter of the second side surface of the fifth lens corresponding to the maximum field angle of the optical lens can make the front port diameter and the rear port diameter of the optical lens relatively close, which is conducive to reducing the volume of the optical lens and realizing the miniaturization characteristics of the optical lens.

[0112] In an exemplary embodiment, the maximum light-clearance diameter D of the first side surface of the first lens corresponding to the maximum field angle of the optical lens and the image height H corresponding to the maximum field angle of the optical lens may satisfy: 1.8≤D / H≤4.2. Further, 2.2≤D / H≤4. Reasonably configuring the ratio of the maximum light-clearance diameter of the first side surface of the first lens corresponding to the maximum field angle of the optical lens to the image height corresponding to the maximum field angle of the optical lens, under the condition of the same image height, can make the optical lens have a smaller front port diameter, which is conducive to reducing the volume of the optical lens and realizing the miniaturization characteristics of the optical lens.

[0113] In an exemplary embodiment, the on-axis distance T12 from the second side surface of the first lens to the first side surface of the second lens and the total optical length TTL of the optical lens may satisfy: 0.07≤T12 / TTL≤0.4. Further, 0.11≤T12 / TTL≤0.38. Reasonable configuration of the on-axis distance from the second side surface of the first lens to the first side surface of the second lens can make the light emitted from the first lens diverge appropriately at the gap, and the light trend is smooth, which is conducive to reducing the sensitivity of the first lens while improving the resolution of the optical lens.

[0114] In an exemplary embodiment, the effective focal length F1 of the first lens and the on-axis distance T12 from the second side surface of the first lens to the first side surface of the second lens may satisfy: -7.7≤F1 / T12≤-0.4. Further, -5.7≤F1 / T12≤-1.4. Reasonable configuration of the ratio of the effective focal length of the first lens to the on-axis distance from the second side surface of the first lens to the first side surface of the second lens can provide a larger gap between the first lens and the second lens, so that the light emitted from the first lens moves smoothly at the gap, and the incident angle of the light on the second lens is smaller, which is beneficial to reduce the sensitivity of the first lens while improving the resolution of the optical lens.

[0115] In an exemplary embodiment, the total effective focal length F of the optical lens and the image height H corresponding to the maximum field angle of the optical lens may satisfy: 1.6≤F / H≤2. Further, 1.7≤F / H≤1.9. Reasonable configuration of the ratio of the total effective focal length of the optical lens to the image height corresponding to the maximum field angle of the optical lens is conducive to achieving the characteristics of the optical lens with a long focus and a large image plane.

[0116] In an exemplary embodiment, the radius of curvature R9 of the first side surface of the fifth lens and the total optical length TTL of the optical lens may satisfy: 0.1≤R9 / TTL≤2. Further, 0.16≤R9 / TTL≤1.2. Reasonable configuration of the ratio of the radius of curvature of the first side surface of the fifth lens to the total optical length of the optical lens can make the first side surface of the fifth lens deflect the light emitted from the fourth lens toward the direction close to the optical axis, which is conducive to reducing the rear port diameter of the optical lens and realizing the miniaturization of the optical lens.

[0117] In an exemplary embodiment, the radius of curvature R10 of the second side surface of the fifth lens and the total optical length TTL of the optical lens may satisfy: 0.05≤R10 / TTL≤2. Further, 0.1≤R10 / TTL≤1.1. Reasonable configuration of the ratio of the radius of curvature of the second side surface of the fifth lens to the total optical length of the optical lens can make the second side surface of the fifth lens concave and the second side surface of the fifth lens appropriately diverge the light, thereby improving the resolution of the optical lens. At the same time, the radius of curvature of the second side surface of the fifth lens is small, which is conducive to reducing the rear port diameter of the optical lens and realizing the miniaturization of the optical lens.

[0118] In an exemplary embodiment, the center thickness CT2 of the second lens on the optical axis, the axial distance T23 from the second side of the second lens to the first side of the third lens, the center thickness CT3 of the third lens on the optical axis, the axial distance T34 from the second side of the third lens to the first side of the fourth lens and the total optical length TTL of the optical lens may satisfy: 0.05≤(CT2+T23+CT3+T34) / TTL≤0.6. Further, 0.11≤(CT2+T23+CT3+T34) / TTL≤0.47. The second lens and the third lens have positive focal lengths, which converge the light. Reasonable configuration of the axial distance from the second side of the second lens to the first side of the third lens and the axial distance from the second side of the third lens to the first side of the fourth lens can make the third lens further slowly converge the convergent light from the second lens, which is conducive to reducing the sensitivity of the optical lens and improving the resolution of the optical lens.

[0119] In an exemplary embodiment, the radius of curvature R9 of the first side surface of the fifth lens, the radius of curvature R10 of the second side surface of the fifth lens, and the total effective focal length F of the optical lens may satisfy: 0.4≤F / R9+F / R10≤4.8. Further, 0.7≤F / R9+F / R10≤3.3. The fifth lens is meniscus-shaped, and by controlling the relationship between the radius of curvature of the first side surface and the second side surface of the fifth lens and the total effective focal length of the optical lens, astigmatism can be effectively corrected and the resolution of the optical lens can be improved.

[0120] In an exemplary embodiment, the total effective focal length F of the optical lens, the effective focal length F2 of the second lens, and the effective focal length F3 of the third lens may satisfy: 0.01≤F / F2+F / F3≤0.84. Further, 0.17≤F / F2+F / F3≤0.67. Reasonable configuration of the relationship between the total effective focal length of the optical lens, the effective focal length of the second lens, and the effective focal length of the third lens enables the second lens and the third lens to properly converge the light, and the light after the second lens and the third lens smoothly transitions to the rear optical system, reducing the sensitivity of the second lens and the third lens, and improving the resolution of the optical lens.

[0121] In an exemplary embodiment, the maximum field of view FOV of the optical lens and the total effective focal length F of the optical lens may satisfy: 1.6° / mm≤FOV / F≤2.1° / mm. Further, 1.7° / mm≤FOV / F≤2.0° / mm. Reasonable configuration of the ratio of the maximum field of view of the optical lens to the total effective focal length of the optical lens is conducive to realizing the telephoto characteristics of the optical lens, thereby realizing long-distance detection of the optical lens.

[0122] The optical lens according to the above embodiment of the present disclosure may use multiple lenses, such as the six lenses mentioned above. By reasonably allocating the optical parameters of each lens, the optical lens has a small aperture, miniaturization, long focus, large image surface, high resolution, low sensitivity, and short back focus, and can be well matched with, for example, an on-board chip. Therefore, the optical lens according to the above embodiment of the present disclosure can better meet the requirements of, for example, on-board applications.

[0123] Those skilled in the art should understand that the total optical length TTL of the optical lens used above refers to the on-axis distance from the first side surface of the first lens to the imaging surface or image source surface of the second side; the back focal length BFL of the optical lens refers to the on-axis distance from the second side surface of the sixth lens to the imaging surface or image source surface of the second side; and the maximum field of view FOV of the optical lens is associated with the image height H, which refers to the field of view corresponding to the image height H.

[0124] However, it should be understood by those skilled in the art that, without departing from the technical solution claimed in the present disclosure, the number of lenses constituting the optical lens can be changed to obtain the various results and advantages described in this specification. 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.

[0125] Specific embodiments of the optical lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0126] It should be noted that the optical lenses provided in Examples 1 to 42 of the present disclosure can all achieve good imaging quality, and their modulation transfer function curves are relatively close. Therefore, the present disclosure only exemplarily shows the modulation transfer function curves of Examples 16, 17 and 22, and the modulation transfer function curves of other embodiments are no longer shown one by one, and those skilled in the art should be able to know them based on the contents of the present disclosure.

[0127] Example 1

[0128] The following reference Figure 1 An optical lens according to Embodiment 1 of the present disclosure is described.

[0129] like Figure 1 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixth lens L6. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5.

[0130] The first lens L1 has negative power, and its first side surface S1 is concave, and its second side surface S2 is convex. The second lens L2 has positive power, and its first side surface S3 is concave, and its second side surface S4 is convex. The third lens L3 has positive power, and its first side surface S5 is convex, and its second side surface S6 is a plane. The fourth lens L4 has positive power, and its first side surface S7 is convex, and its second side surface S8 is concave. The fifth lens L5 has negative power, and its first side surface S9 is convex, and its second side surface S10 is concave. The sixth lens L6 has positive power, and its first side surface S11 is convex, and its second side surface S12 is concave.

[0131] An image plane IMA is disposed on the second side of the optical lens, and a filter L7 and a protective glass L8 are disposed between the sixth lens L6 and the image plane IMA. The filter L7 has a first side surface S13 and a second side surface S14, and the protective glass has a first side surface S15 and a second side surface S16. When IMA is an imaging surface, light from an object sequentially passes through each surface S1 to S16 and is finally imaged on IMA. When IMA is an image source surface, light from IMA sequentially passes through each surface S16 to S1 and is finally projected onto the object.

[0132] Table 1 shows the basic parameters of the optical lens of Example 1.

[0133] Table 1

[0134]

[0135] In Embodiment 1, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces, and the surface shape of each aspherical surface can be defined by but not limited to the following aspherical surface formula:

[0136] (1)

[0137] Wherein, x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c=1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. Table 2 shows the cone coefficient k and the high-order coefficients A4, A6, A8, A10, A12, A14 and A16 that can be used for each aspheric surface S11 and S12 in Example 1.

[0138] Table 2

[0139]

[0140] The MTF (Modulation Transfer Function) value of the edge field of view of the optical lens of Example 1 at a spatial frequency of 50lp / mm (line pairs / millimeter) is 0.62. In the point array RMS, the root mean square radius of the light spot of the edge field of view on the image plane is 6.6μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the proportion of the light spot energy in the total light energy exceeds 93.6%. Therefore, the optical lens given in Example 1 has good imaging quality.

[0141] Example 2

[0142] The following reference Figure 2 The optical lens according to Embodiment 2 of the present disclosure is described. Figure 2 As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; and the second side surface S6 of the third lens L3 is a convex surface.

[0143] Table 3 shows the basic parameters of the optical lens of Example 2.

[0144] Table 3

[0145]

[0146] In Example 2, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 4 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 2.

[0147] Table 4

[0148]

[0149] The MTF value of the edge field of view of the optical lens of Example 2 at the spatial frequency of 50lp / mm (line pairs / millimeter) is 0.61. In the spot diagram RMS, the root mean square radius of the spot of the edge field of view on the image plane is 6.9μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 93.1%. Therefore, the optical lens given in Example 2 has good imaging quality.

[0150] Example 3

[0151] The following reference Figure 3 The optical lens according to Embodiment 3 of the present disclosure is described. Figure 3As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the first side surface S1 of the first lens L1 is convex, and the second side surface S2 is concave; the first side surface S3 of the second lens L2 is convex, and the second side surface S4 is concave; the second side surface S6 of the third lens L3 is concave.

[0152] Table 5 shows the basic parameter table of the optical lens of Example 3.

[0153] Table 5

[0154]

[0155] In Example 3, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 6 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 3.

[0156] Table 6

[0157]

[0158] The MTF value of the edge field of view of the optical lens of Example 3 at the spatial frequency of 25lp / mm (line pairs / mm) is 0.60. In the spot diagram RMS, the root mean square radius of the spot of the edge field of view on the image plane is 13.4μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 90.8%. Therefore, the optical lens given in Example 3 has good imaging quality.

[0159] Example 4

[0160] The following reference Figure 4 The optical lens according to Embodiment 4 of the present disclosure is described. Figure 4 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the first side surface S1 of the first lens L1 is a convex surface, and the second side surface S2 is a concave surface; the first side surface S3 of the second lens L2 is a convex surface, and the second side surface S4 is a concave surface; the first side surface S5 of the third lens L3 is a concave surface, and the second side surface S6 is a convex surface.

[0161] Table 7 shows the basic parameter table of the optical lens of Example 4.

[0162] Table 7

[0163]

[0164] In Example 4, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 8 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 4.

[0165] Table 8

[0166]

[0167] The MTF value of the edge field of view of the optical lens of Example 4 at the spatial frequency of 25lp / mm (line pairs / millimeter) is 0.58. In the spot diagram RMS, the root mean square radius of the spot of the edge field of view on the image plane is 32.3μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 80.0%. Therefore, the optical lens given in Example 4 has good imaging quality.

[0168] Example 5

[0169] The following reference Figure 5 The optical lens according to Embodiment 5 of the present disclosure is described. Figure 5 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the first side surface S1 of the first lens L1 is convex, and the second side surface S2 is concave; the first side surface S3 of the second lens L2 is convex; and the second side surface S6 of the third lens L3 is concave.

[0170] Table 9 shows the basic parameter table of the optical lens of Example 5.

[0171] Table 9

[0172]

[0173] In Example 5, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 10 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 5.

[0174] Table 10

[0175]

[0176] The MTF value of the edge field of view of the optical lens of Example 5 at the spatial frequency of 50lp / mm (line pairs / millimeter) is 0.52. In the spot diagram RMS, the root mean square radius of the spot of the edge field of view on the image plane is 8.6μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 91.5%. Therefore, the optical lens given in Example 5 has good imaging quality.

[0177] Example 6

[0178] The following reference Figure 6 The optical lens according to Embodiment 6 of the present disclosure is described. Figure 6 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the second side surface S6 of the third lens L3 is a concave surface; the fifth lens L5 has positive focal power; the sixth lens L6 has negative focal power; and the aperture STO is located between the third lens L3 and the fourth lens L4.

[0179] Table 11 shows the basic parameter table of the optical lens of Example 6.

[0180] Table 11

[0181]

[0182] In Example 6, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 12 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 6.

[0183] Table 12

[0184]

[0185] The MTF value of the edge field of view of the optical lens of Example 6 at the spatial frequency of 25lp / mm (line pairs / mm) is 0.53. In the spot diagram RMS, the root mean square radius of the spot of the edge field of view on the image plane is 12.18μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 85.6%. Therefore, the optical lens given in Example 6 has good imaging quality.

[0186] Example 7

[0187] The following reference Figure 7 The optical lens according to Embodiment 7 of the present disclosure is described. Figure 7 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the first side surface S3 of the second lens L2 is a convex surface; the second side surface S6 of the third lens L3 is a convex surface; the fifth lens L5 has positive focal power; the sixth lens L6 has negative focal power; and the aperture STO is located between the second lens L2 and the third lens L3.

[0188] Table 13 shows the basic parameter table of the optical lens of Example 7.

[0189] Table 13

[0190]

[0191] In Example 7, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 14 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 7.

[0192] Table 14

[0193]

[0194] The MTF value of the edge field of view of the optical lens of Example 7 at the spatial frequency of 50lp / mm (line pairs / millimeter) is 0.69. In the spot diagram RMS, the root mean square radius of the spot of the edge field of view on the image plane is 3.8μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 98.3%. Therefore, the optical lens given in Example 7 has good imaging quality.

[0195] Example 8

[0196] The following reference Figure 8 The optical lens according to Embodiment 8 of the present disclosure is described. Figure 8 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the second side surface S6 of the third lens L3 is a convex surface; the fifth lens L5 has positive focal power; the sixth lens L6 has negative focal power; and the aperture STO is located between the third lens L3 and the fourth lens L4.

[0197] Table 15 shows the basic parameter table of the optical lens of Example 8.

[0198] Table 15

[0199]

[0200] In Example 8, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 16 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 8.

[0201] Table 16

[0202]

[0203] The MTF value of the edge field of view of the optical lens of Example 8 at the spatial frequency of 50lp / mm (line pairs / millimeter) is 0.58. In the spot diagram RMS, the root mean square radius of the light spot of the edge field of view on the image plane is 6.2μm. In terms of diffraction circle energy, within the circle with a diameter of 15μm on the image plane, the proportion of the light spot energy in the total light energy exceeds 96.6%. Therefore, the optical lens given in Example 8 has good imaging quality.

[0204] Example 9

[0205] The following reference Fig. 9 The optical lens according to Embodiment 9 of the present disclosure is described. Fig. 9 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the first side surface S5 of the third lens L3 is a concave surface, and the second side surface S6 is a convex surface; the fifth lens L5 has a positive focal power; the sixth lens L6 has a negative focal power; and the aperture STO is located between the third lens L3 and the fourth lens L4.

[0206] Table 17 shows the basic parameter table of the optical lens of Example 9.

[0207] Table 17

[0208]

[0209] In Example 9, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 18 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 9.

[0210] Table 18

[0211]

[0212] The MTF value of the edge field of view of the optical lens of Example 9 at the spatial frequency of 25lp / mm (line pairs / mm) is 0.64. In the spot diagram RMS, the root mean square radius of the spot of the edge field of view on the image plane is 13.2μm. In terms of diffraction circle energy, within the circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 87.1%. Therefore, the optical lens given in Example 9 has good imaging quality.

[0213] Example 10

[0214] The following reference Fig.10 The optical lens according to Embodiment 10 of the present disclosure is described. Fig.10 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the first side surface S3 of the second lens L2 is convex, and the second side surface S4 is concave; the first side surface S5 of the third lens L3 is concave, and the second side surface S6 is convex; the fifth lens L5 has positive focal power; the sixth lens L6 has negative focal power; and the aperture STO is located between the third lens L3 and the fourth lens L4.

[0215] Table 19 shows the basic parameter table of the optical lens of Example 10.

[0216] Table 19

[0217]

[0218] In Example 10, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 20 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 10.

[0219] Table 20

[0220]

[0221] The MTF value of the edge field of view of the optical lens of Example 10 at the spatial frequency of 25lp / mm (line pairs / mm) is 0.71. In the spot diagram RMS, the root mean square radius of the spot of the edge field of view on the image plane is 11.7μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 92.8%. Therefore, the optical lens given in Example 10 has good imaging quality.

[0222] Embodiment 11

[0223] The following reference Fig.11 The optical lens according to Embodiment 11 of the present disclosure is described. Fig.11 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the second side surface S6 of the third lens L3 is a concave surface; the second side surface S8 of the fourth lens L4 is a convex surface; the fifth lens L5 has a positive focal power; the sixth lens L6 has a negative focal power; and the aperture STO is located between the third lens L3 and the fourth lens L4.

[0224] Table 21 shows the basic parameter table of the optical lens of Example 11.

[0225] Table 21

[0226]

[0227] In Example 11, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 22 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 11.

[0228] Table 22

[0229]

[0230] The MTF value of the edge field of view of the optical lens of Example 11 at the spatial frequency of 50lp / mm (line pairs / millimeter) is 0.61. In the spot diagram RMS, the root mean square radius of the spot of the edge field of view on the image plane is 4.8μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 98.3%. Therefore, the optical lens given in Example 11 has good imaging quality.

[0231] Example 12

[0232] The following reference Fig.12 The optical lens according to Embodiment 12 of the present disclosure is described. Fig.12 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the second side surface S6 of the third lens L3 is a concave surface; the fifth lens L5 has positive focal power; and the sixth lens L6 has negative focal power.

[0233] Table 23 shows the basic parameter table of the optical lens of Example 12.

[0234] Table 23

[0235]

[0236] In Example 12, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 24 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 12.

[0237] Table 24

[0238]

[0239] The MTF value of the edge field of view of the optical lens of Example 12 at the spatial frequency of 50lp / mm (line pairs / millimeter) is 0.72. In the spot diagram RMS, the root mean square radius of the spot of the edge field of view on the image plane is 3.5μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 98.3%. Therefore, the optical lens given in Example 12 has good imaging quality.

[0240] Embodiment 13

[0241] The following reference Fig.13 The optical lens according to Embodiment 13 of the present disclosure is described. Fig.13 As shown, the main differences between this embodiment and Embodiment 1 are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the second side surface S6 of the third lens L3 is a convex surface; and the fifth lens L5 has positive optical power.

[0242] Table 25 shows the basic parameter table of the optical lens of Example 13.

[0243] Table 25

[0244]

[0245] In Example 13, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 26 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 13.

[0246] Table 26

[0247]

[0248] The MTF value of the edge field of view of the optical lens of Example 13 at the spatial frequency of 50lp / mm (line pairs / millimeter) is 0.74. In the spot diagram RMS, the root mean square radius of the spot of the edge field of view on the image plane is 3.0μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 98.3%. Therefore, the optical lens given in Example 13 has good imaging quality.

[0249] Embodiment 14

[0250] The following reference Fig.14 The optical lens according to Embodiment 14 of the present disclosure is described. Fig.14 As shown, the main differences between this embodiment and Embodiment 1 are that: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; and the fifth lens L5 has positive power.

[0251] Table 27 shows the basic parameter table of the optical lens of Example 14, wherein the units of the radius of curvature and thickness / distance are all millimeters (mm).

[0252] Table 27

[0253]

[0254] In Example 14, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 28 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 14.

[0255] Table 28

[0256]

[0257] The MTF value of the edge field of the optical lens of Example 14 at the spatial frequency of 50lp / mm (line pairs / mm) is 0.74. In the spot diagram RMS, the root mean square radius of the spot of the edge field on the image plane is 10.0μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 98.3%. Therefore, the optical lens given in Example 14 has good imaging quality.

[0258] Embodiment 15

[0259] The following reference Fig.15 The optical lens according to Embodiment 15 of the present disclosure is described. Fig.15 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the second side surface S2 of the first lens L1 is a concave surface; the second side surface S6 of the third lens L3 is a concave surface; and the fifth lens L5 has positive optical power.

[0260] Table 29 shows the basic parameter table of the optical lens of Example 15.

[0261] Table 29

[0262]

[0263] In Example 15, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 30 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 15.

[0264] Table 30

[0265]

[0266] The MTF value of the edge field of view of the optical lens of Example 15 at the spatial frequency of 50lp / mm (line pairs / millimeter) is 0.79. In the spot diagram RMS, the root mean square radius of the spot of the edge field of view on the image plane is 3.0μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 98.3%. Therefore, the optical lens given in Example 15 has good imaging quality.

[0267] Example 16

[0268] The following reference Fig.16 The optical lens according to Embodiment 16 of the present disclosure is described. Fig.16As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the second side surface S2 of the first lens L1 is a concave surface; the second side surface S6 of the third lens L3 is a convex surface; and the fifth lens L5 has positive optical power.

[0269] Table 31 shows the basic parameter table of the optical lens of Example 16.

[0270] Table 31

[0271]

[0272] In Example 16, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 32 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 16.

[0273] Table 32

[0274]

[0275] from Fig.43 From the above, the MTF value of the edge field of view of the optical lens of Example 16 at the spatial frequency of 50lp / mm (line pairs / mm) is 0.79. In the point diagram RMS, the root mean square radius of the spot of the edge field of view on the image plane is 2.7μm. In terms of diffraction circle energy, within the circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 98.3%. Therefore, the optical lens given in Example 16 has good imaging quality.

[0276] Embodiment 17

[0277] The following reference Fig.17 The optical lens according to Embodiment 17 of the present disclosure is described. Fig.17 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the second side surface S2 of the first lens L1 is a concave surface; and the fifth lens L5 has positive optical power.

[0278] Table 33 shows the basic parameter table of the optical lens of Example 17.

[0279] Table 33

[0280]

[0281] In Example 17, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 34 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 17.

[0282] Table 34

[0283]

[0284] from Fig.44 From the above, the MTF value of the edge field of view of the optical lens of Example 17 at the spatial frequency of 50lp / mm (line pairs / mm) is 0.78. In the point diagram RMS, the root mean square radius of the spot of the edge field of view on the image plane is 2.8μm. In terms of diffraction circle energy, within the circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 98.3%. Therefore, the optical lens given in Example 17 has good imaging quality.

[0285] Embodiment 18

[0286] The following reference Fig.18 The optical lens according to Embodiment 18 of the present disclosure is described. Fig.18 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the first side surface S1 of the first lens L1 is convex, and the second side surface S2 is concave; the first side surface S3 of the second lens L2 is convex, and the second side surface S4 is concave; the second side surface S6 of the third lens L3 is concave; and the fifth lens L5 has positive optical power.

[0287] Table 35 shows the basic parameter table of the optical lens of Example 18.

[0288] Table 35

[0289]

[0290] In Example 18, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 36 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 18.

[0291] Table 36

[0292]

[0293] The MTF value of the edge field of view of the optical lens of Example 18 at the spatial frequency of 25lp / mm (line pairs / mm) is 0.69. In the spot diagram RMS, the root mean square radius of the spot of the edge field of view on the image plane is 9.5μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 89.8%. Therefore, the optical lens given in Example 18 has good imaging quality.

[0294] Embodiment 19

[0295] The following reference Fig.19 The optical lens according to Embodiment 19 of the present disclosure is described. Fig.19 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the first side surface S1 of the first lens L1 is convex, and the second side surface S2 is concave; the first side surface S3 of the second lens L2 is convex; the second side surface S6 of the third lens L3 is concave; and the fifth lens L5 has positive optical power.

[0296] Table 37 shows the basic parameter table of the optical lens of Example 19.

[0297] Table 37

[0298]

[0299] In Example 19, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 38 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 19.

[0300] Table 38

[0301]

[0302] The MTF value of the edge field of the optical lens of Example 19 at the spatial frequency of 25lp / mm (line pairs / mm) is 0.79. In the spot diagram RMS, the root mean square radius of the spot of the edge field on the image plane is 8.0μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 94.6%. Therefore, the optical lens given in Example 19 has good imaging quality.

[0303] Embodiment 20

[0304] The following reference Fig. 20 The optical lens according to Embodiment 20 of the present disclosure is described. Fig. 20 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the first side surface S1 of the first lens L1 is convex, and the second side surface S2 is concave; the first side surface S3 of the second lens L2 is convex; the first side surface S5 of the third lens L3 is concave, and the second side surface S6 is convex; the fifth lens L5 has positive optical power.

[0305] Table 39 shows the basic parameter table of the optical lens of Example 20.

[0306] Table 39

[0307]

[0308] In Example 20, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 40 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 20.

[0309] Table 40

[0310]

[0311] The MTF value of the edge field of view of the optical lens of Example 20 at the spatial frequency of 25lp / mm (line pairs / millimeter) is 0.77. In the spot diagram RMS, the root mean square radius of the spot of the edge field of view on the image plane is 6.0μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 96.8%. Therefore, the optical lens given in Example 20 has good imaging quality.

[0312] Embodiment 21

[0313] The following reference Fig.21 The optical lens according to Embodiment 21 of the present disclosure is described. Fig.21 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the first side surface S1 of the first lens L1 is convex, and the second side surface S2 is concave; the first side surface S3 of the second lens L2 is convex, and the second side surface S4 is concave; the first side surface S5 of the third lens L3 is concave, and the second side surface S6 is convex; the sixth lens L6 has negative optical power; and the aperture STO is located between the third lens L3 and the fourth lens L4.

[0314] Table 41 shows the basic parameter table of the optical lens of Example 21.

[0315] Table 41

[0316]

[0317] In Example 21, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 42 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 21.

[0318] Table 42

[0319]

[0320] The MTF value of the edge field of view of the optical lens of Example 21 at the spatial frequency of 50lp / mm (line pairs / millimeter) is 0.59. In the spot diagram RMS, the root mean square radius of the spot of the edge field of view on the image plane is 6.0μm. In terms of diffraction circle energy, within the circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 96.6%. Therefore, the optical lens given in Example 21 has good imaging quality.

[0321] Embodiment 22

[0322] The following reference Fig. 22 The optical lens according to Embodiment 22 of the present disclosure is described. Fig. 22 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the first side surface S3 of the second lens L2 is convex, and the second side surface S4 is concave; the second side surface S6 of the third lens L3 is concave; and the fourth lens L4 has negative optical power.

[0323] Table 43 shows the basic parameter table of the optical lens of Example 22.

[0324] Table 43

[0325]

[0326] In Example 22, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 44 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 22.

[0327] Table 44

[0328]

[0329] from Fig.45 From the above, the MTF value of the edge field of view of the optical lens of Example 22 at the spatial frequency of 50lp / mm (line pairs / mm) is 0.68. In the point diagram RMS, the root mean square radius of the spot of the edge field of view on the image plane is 5μm. In terms of diffraction circle energy, within the circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 98%. Therefore, the optical lens given in Example 22 has good imaging quality.

[0330] Embodiment 23

[0331] The following reference Fig.23 The optical lens according to Embodiment 23 of the present disclosure is described. Fig.23As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the first side surface S3 of the second lens L2 is a convex surface; the second side surface S6 of the third lens L3 is a concave surface; and the fourth lens L4 has a negative optical power.

[0332] Table 45 shows the basic parameter table of the optical lens of Example 23.

[0333] Table 45

[0334]

[0335] In Example 23, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 46 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 23.

[0336] Table 46

[0337]

[0338] The MTF value of the edge field of the optical lens of Example 23 at the spatial frequency of 25lp / mm (line pairs / millimeter) is 0.72. In the spot diagram RMS, the root mean square radius of the spot of the edge field on the image plane is 11μm. In terms of diffraction circle energy, within the circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 94%. Therefore, the optical lens given in Example 23 has good imaging quality.

[0339] Embodiment 24

[0340] The following reference Fig.24 The optical lens according to Embodiment 24 of the present disclosure is described. Fig.24 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the first side surface S3 of the second lens L2 is a convex surface, and the second side surface S4 is a plane; the second side surface S6 of the third lens L3 is a concave surface; and the fourth lens L4 has a negative optical power.

[0341] Table 47 shows the basic parameter table of the optical lens of Example 24.

[0342] Table 47

[0343]

[0344] In Example 24, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 48 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 24.

[0345] Table 48

[0346]

[0347] The MTF value of the edge field of the optical lens of Example 24 at the spatial frequency of 50lp / mm (line pairs / millimeter) is 0.61. In the spot diagram RMS, the root mean square radius of the spot of the edge field on the image plane is 6μm. In terms of diffraction circle energy, within the circle with a diameter of 6μm on the image plane, the proportion of the spot energy in the total light energy exceeds 98%. Therefore, the optical lens given in Example 24 has good imaging quality.

[0348] Embodiment 25

[0349] The following reference Fig.25 The optical lens according to Embodiment 25 of the present disclosure is described. Fig.25 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the first side surface S3 of the second lens L2 is convex, and the second side surface S4 is concave; the second side surface S6 of the third lens L3 is concave; the fourth lens L4 has negative optical power, and the first side surface S7 thereof is concave.

[0350] Table 49 shows the basic parameter table of the optical lens of Example 25.

[0351] Table 49

[0352]

[0353] In Example 25, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 50 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 25.

[0354] Table 50

[0355]

[0356] The MTF value of the edge field of the optical lens of Example 25 at the spatial frequency of 25lp / mm (line pairs / millimeter) is 0.67. In the spot diagram RMS, the root mean square radius of the spot of the edge field on the image plane is 11μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 95%. Therefore, the optical lens given in Example 25 has good imaging quality.

[0357] Embodiment 26

[0358] The following reference Fig.26 The optical lens according to Embodiment 26 of the present disclosure is described. Fig.26As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the first side surface S3 of the second lens L2 is a convex surface; the second side surface S6 of the third lens L3 is a concave surface; the fourth lens L4 has negative optical power, and the first side surface S7 thereof is a concave surface.

[0359] Table 51 shows the basic parameter table of the optical lens of Example 26.

[0360] Table 51

[0361]

[0362] In Example 26, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 52 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 26.

[0363] Table 52

[0364]

[0365] The MTF value of the edge field of the optical lens of Example 26 at the spatial frequency of 50lp / mm (line pairs / millimeter) is 0.53. In the spot diagram RMS, the root mean square radius of the spot of the edge field on the image plane is 5μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 98%. Therefore, the optical lens given in Example 26 has good imaging quality.

[0366] Embodiment 27

[0367] The following reference Fig. 27 The optical lens according to Embodiment 27 of the present disclosure is described. Fig. 27 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the first side surface S3 of the second lens L2 is a convex surface; the second side surface S6 of the third lens L3 is a concave surface; the fourth lens L4 has negative optical power, and the first side surface S7 thereof is a concave surface.

[0368] Table 53 shows the basic parameter table of the optical lens of Example 27.

[0369] Table 53

[0370]

[0371] In Example 27, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 54 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 27.

[0372] Table 54

[0373]

[0374] The MTF value of the edge field of the optical lens of Example 27 at the spatial frequency of 50lp / mm (line pairs / millimeter) is 0.54. In the spot diagram RMS, the root mean square radius of the spot of the edge field on the image plane is 5μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 98%. Therefore, the optical lens given in Example 27 has good imaging quality.

[0375] Embodiment 28

[0376] The following reference Fig.28 The optical lens according to Embodiment 28 of the present disclosure is described. Fig.28 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the first side surface S3 of the second lens L2 is a convex surface; the second side surface S6 of the third lens L3 is a concave surface; the fourth lens L4 has a negative focal power; the fifth lens L5 has a positive focal power; the sixth lens L6 has a negative focal power; and the aperture STO is located between the second lens L2 and the third lens L3.

[0377] Table 55 shows the basic parameter table of the optical lens of Example 28.

[0378] Table 55

[0379]

[0380] In Example 28, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 56 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 28.

[0381] Table 56

[0382]

[0383] The MTF value of the edge field of the optical lens of Example 28 at the spatial frequency of 50lp / mm (line pairs / millimeter) is 0.65. In the spot diagram RMS, the root mean square radius of the light spot of the edge field of view on the image plane is 8μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the proportion of the light spot energy in the total light energy exceeds 97%. Therefore, the optical lens given in Example 28 has good imaging quality.

[0384] Embodiment 29

[0385] The following reference Fig.29The optical lens according to Embodiment 29 of the present disclosure is described. Fig.29 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the second side surface S6 of the third lens L3 is a concave surface; the fourth lens L4 has a negative focal power; the fifth lens L5 has a positive focal power; the sixth lens L6 has a negative focal power; and the aperture STO is located between the second lens L2 and the third lens L3.

[0386] Table 57 shows the basic parameter table of the optical lens of Example 29.

[0387] Table 57

[0388]

[0389] In Example 29, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 58 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 29.

[0390] Table 58

[0391]

[0392] The MTF value of the edge field of the optical lens of Example 29 at the spatial frequency of 25lp / mm (line pairs / mm) is 0.58. In the spot diagram RMS, the root mean square radius of the spot of the edge field on the image plane is 24μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 83%. Therefore, the optical lens given in Example 29 has good imaging quality.

[0393] Embodiment 30

[0394] The following reference Fig.30 The optical lens according to Embodiment 30 of the present disclosure is described. Fig.30 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the first side surface S3 of the second lens L2 is convex, and the second side surface S4 is concave; the second side surface S6 of the third lens L3 is concave; the fourth lens L4 has negative focal power; the fifth lens L5 has positive focal power; the sixth lens L6 has negative focal power; and the aperture STO is located between the first lens L1 and the second lens L2.

[0395] Table 59 shows the basic parameter table of the optical lens of Example 30.

[0396] Table 59

[0397]

[0398] In Example 30, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 60 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 30.

[0399] Table 60

[0400]

[0401] The MTF value of the edge field of the optical lens of Example 30 at the spatial frequency of 50lp / mm (line pairs / millimeter) is 0.64. In the spot diagram RMS, the root mean square radius of the spot of the edge field on the image plane is 11μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 93%. Therefore, the optical lens given in Example 30 has good imaging quality.

[0402] Embodiment 31

[0403] The following reference Fig.31 The optical lens according to Embodiment 31 of the present disclosure is described. Fig.31 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the second side surface S6 of the third lens L3 is a concave surface; the fourth lens L4 has negative optical power, and the first side surface S7 thereof is a concave surface; the fifth lens L5 has positive optical power; the sixth lens L6 has negative optical power; and the aperture STO is located between the second lens L2 and the third lens L3.

[0404] Table 61 shows the basic parameter table of the optical lens of Example 31.

[0405] Table 61

[0406]

[0407] In Example 31, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 62 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 31.

[0408] Table 62

[0409]

[0410] The MTF value of the edge field of view of the optical lens of Example 31 at the spatial frequency of 25lp / mm (line pairs / mm) is 0.52. In the spot diagram RMS, the root mean square radius of the light spot of the edge field of view on the image plane is 91μm. In terms of diffraction circle energy, within the circle with a diameter of 15μm on the image plane, the proportion of the light spot energy in the total light energy exceeds 72%. Therefore, the optical lens given in Example 31 has good imaging quality.

[0411] Embodiment 32

[0412] The following reference Fig.32 The optical lens according to Embodiment 32 of the present disclosure is described. Fig.32 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the first side surface S3 of the second lens L2 is convex, and the second side surface S4 is concave; the second side surface S6 of the third lens L3 is concave; the fourth lens L4 has negative focal power; the fifth lens L5 has positive focal power; the sixth lens L6 has negative focal power; and the aperture STO is located between the second lens L2 and the third lens L3.

[0413] Table 63 shows the basic parameter table of the optical lens of Example 32.

[0414] Table 63

[0415]

[0416] In Example 32, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 64 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 32.

[0417] Table 64

[0418]

[0419] The MTF value of the edge field of the optical lens of Example 32 at the spatial frequency of 50lp / mm (line pairs / millimeter) is 0.60. In the spot diagram RMS, the root mean square radius of the spot of the edge field on the image plane is 8μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 96%. Therefore, the optical lens given in Example 32 has good imaging quality.

[0420] Embodiment 33

[0421] The following reference Fig.33 The optical lens according to Embodiment 33 of the present disclosure is described. Fig.33As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the second side surface S6 of the third lens L3 is a concave surface; the fourth lens L4 has negative optical power, and the first side surface S7 thereof is a concave surface; the fifth lens L5 has positive optical power; the sixth lens L6 has negative optical power; and the aperture STO is located between the second lens L2 and the third lens L3.

[0422] Table 65 shows the basic parameter table of the optical lens of Example 33.

[0423] Table 65

[0424]

[0425] In Example 33, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 66 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 33.

[0426] Table 66

[0427]

[0428] The MTF value of the edge field of the optical lens of Example 33 at the spatial frequency of 50lp / mm (line pairs / mm) is 0.66. In the spot diagram RMS, the root mean square radius of the spot of the edge field on the image plane is 10μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the spot energy accounts for more than 92% of the total light energy. Therefore, the optical lens given in Example 33 has good imaging quality.

[0429] Embodiment 34

[0430] The following reference Fig.34 The optical lens according to Embodiment 34 of the present disclosure is described. Fig.34 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the first side surface S3 of the second lens L2 is a convex surface; the second side surface S6 of the third lens L3 is a concave surface; the fourth lens L4 has a negative focal power; the fifth lens L5 has a positive focal power; the sixth lens L6 has a negative focal power; and the aperture STO is located between the second lens L2 and the third lens L3.

[0431] Table 67 shows the basic parameter table of the optical lens of Example 34.

[0432] Table 67

[0433]

[0434] In Example 34, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 68 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 34.

[0435] Table 68

[0436]

[0437] The MTF value of the edge field of the optical lens of Example 34 at the spatial frequency of 50lp / mm (line pairs / millimeter) is 0.54. In the spot diagram RMS, the root mean square radius of the light spot of the edge field on the image plane is 10μm. In terms of diffraction circle energy, within the circle with a diameter of 15μm on the image plane, the proportion of the light spot energy in the total light energy exceeds 95%. Therefore, the optical lens given in Example 34 has good imaging quality.

[0438] Embodiment 35

[0439] The following reference Fig.35 The optical lens according to Embodiment 35 of the present disclosure is described. Fig.35 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the second side surface S6 of the third lens L3 is a concave surface; the fourth lens L4 has negative optical power, the first side surface S7 of which is a concave surface, and the second side surface S8 is a convex surface; the fifth lens L5 has positive optical power.

[0440] Table 69 shows the basic parameter table of the optical lens of Example 35.

[0441] Table 69

[0442]

[0443] In Example 35, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 70 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 35.

[0444] Table 70

[0445]

[0446] The MTF value of the edge field of the optical lens of Example 35 at the spatial frequency of 50lp / mm (line pairs / millimeter) is 0.68. In the spot diagram RMS, the root mean square radius of the light spot of the edge field of view on the image plane is 11μm. In terms of diffraction circle energy, within the circle with a diameter of 15μm on the image plane, the proportion of the light spot energy in the total light energy exceeds 93%. Therefore, the optical lens given in Example 35 has good imaging quality.

[0447] Embodiment 36

[0448] The following reference Fig.36 The optical lens according to Embodiment 36 of the present disclosure is described. Fig.36 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the second side surface S6 of the third lens L3 is a convex surface; the fourth lens L4 has negative optical power, the first side surface S7 of which is a concave surface, and the second side surface S8 is a convex surface; the fifth lens L5 has positive optical power.

[0449] Table 71 shows the basic parameter table of the optical lens of Example 36.

[0450] Table 71

[0451]

[0452] In Example 36, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 72 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 36.

[0453] Table 72

[0454]

[0455] The MTF value of the edge field of the optical lens of Example 36 at the spatial frequency of 50lp / mm (line pairs / millimeter) is 0.63. In the spot diagram RMS, the root mean square radius of the light spot of the edge field on the image plane is 9μm. In terms of diffraction circle energy, within the circle with a diameter of 15μm on the image plane, the proportion of the light spot energy in the total light energy exceeds 94%. Therefore, the optical lens given in Example 36 has good imaging quality.

[0456] Embodiment 37

[0457] The following reference Fig.37 The optical lens according to Embodiment 37 of the present disclosure is described. Fig.37 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the first side surface S3 of the second lens L2 is convex, and the second side surface S4 is concave; the second side surface S6 of the third lens L3 is convex; the fourth lens L4 has negative optical power, and the first side surface S7 thereof is concave; the fifth lens L5 has positive optical power.

[0458] Table 73 shows the basic parameter table of the optical lens of Example 37.

[0459] Table 73

[0460]

[0461] In Example 37, the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 74 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 37.

[0462] Table 74

[0463]

[0464] The MTF value of the edge field of the optical lens of Example 37 at the spatial frequency of 25lp / mm (line pairs / mm) is 0.71. In the spot diagram RMS, the root mean square radius of the spot of the edge field on the image plane is 14μm. In terms of diffraction circle energy, within the circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 91%. Therefore, the optical lens given in Example 37 has good imaging quality.

[0465] Embodiment 38

[0466] The following reference Fig.38 The optical lens according to Embodiment 38 of the present disclosure is described. Fig.38 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the first side surface S3 of the second lens L2 is a convex surface; the second side surface S6 of the third lens L3 is a concave surface; the fourth lens L4 has negative optical power, and the first side surface S7 thereof is a concave surface; the fifth lens L5 has positive optical power.

[0467] Table 75 shows the basic parameter table of the optical lens of Example 38.

[0468] Table 75

[0469]

[0470] In Example 38, the first side surface S9 and the second side surface S10 of the fifth lens L5 and the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 76 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 38.

[0471] Table 76

[0472]

[0473] The MTF value of the edge field of the optical lens of Example 38 at the spatial frequency of 50lp / mm (line pairs / millimeter) is 0.73. In the spot diagram RMS, the root mean square radius of the light spot of the edge field on the image plane is 16μm. In terms of diffraction circle energy, within the circle with a diameter of 15μm on the image plane, the proportion of the light spot energy in the total light energy exceeds 94%. Therefore, the optical lens given in Example 38 has good imaging quality.

[0474] Embodiment 39

[0475] The following reference Fig.39 The optical lens according to Embodiment 39 of the present disclosure is described. Fig.39 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the second side surface S2 of the first lens L1 is a concave surface; the first side surface S3 of the second lens L2 is a convex surface; the second side surface S6 of the third lens L3 is a concave surface; the fourth lens L4 has negative optical power, and the first side surface S7 thereof is a concave surface; the fifth lens L5 has positive optical power.

[0476] Table 77 shows the basic parameter table of the optical lens of Example 39.

[0477] Table 77

[0478]

[0479] In Example 39, the first side surface S9 and the second side surface S10 of the fifth lens L5 and the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 78 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 39.

[0480] Table 78

[0481]

[0482] The MTF value of the edge field of the optical lens of Example 39 at the spatial frequency of 25lp / mm (line pairs / mm) is 0.65. In the spot diagram RMS, the root mean square radius of the light spot of the edge field on the image plane is 53μm. In terms of diffraction circle energy, within the circle with a diameter of 15μm on the image plane, the proportion of the light spot energy in the total light energy exceeds 83%. Therefore, the optical lens given in Example 39 has good imaging quality.

[0483] Embodiment 40

[0484] The following reference Fig.40 The optical lens according to Embodiment 40 of the present disclosure is described. Fig.40As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the second side surface S2 of the first lens L1 is a concave surface; the second side surface S6 of the third lens L3 is a concave surface; the fourth lens L4 has negative optical power, and the first side surface S7 thereof is a concave surface; the fifth lens L5 has positive optical power.

[0485] Table 79 shows the basic parameter table of the optical lens of Example 40.

[0486] Table 79

[0487]

[0488] In Example 40, the first side surface S9 and the second side surface S10 of the fifth lens L5 and the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 80 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 40.

[0489] Table 80

[0490]

[0491] The MTF value of the edge field of view of the optical lens of Example 40 at the spatial frequency of 25lp / mm (line pairs / millimeter) is 0.25. In the spot diagram RMS, the root mean square radius of the spot of the edge field of view on the image plane is 53μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds 73%. Therefore, the optical lens given in Example 40 has good imaging quality.

[0492] Embodiment 41

[0493] The following reference Fig.41 The optical lens according to Embodiment 41 of the present disclosure is described. Fig.41 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the second side surface S2 of the first lens L1 is concave; the first side surface S3 of the second lens L2 is convex; the first side surface S5 of the third lens L3 is concave, and the second side surface S6 is convex; the fourth lens L4 has negative optical power, and the first side surface S7 of the fourth lens L4 is concave, and the second side surface S8 is convex; the fifth lens L5 has positive optical power.

[0494] Table 81 shows the basic parameter table of the optical lens of Example 41.

[0495] Table 81

[0496]

[0497] In Example 41, the first side surface S9 and the second side surface S10 of the fifth lens L5 and the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 82 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 41.

[0498] Table 82

[0499]

[0500] The MTF value of the edge field of the optical lens of Example 41 at the spatial frequency of 25lp / mm (line pairs / mm) is 0.65. In the spot diagram RMS, the root mean square radius of the spot of the edge field on the image plane is 66μm. In terms of diffraction circle energy, within the circle with a diameter of 15μm on the image plane, the spot energy accounts for more than 83% of the total light energy. Therefore, the optical lens given in Example 41 has good imaging quality.

[0501] Embodiment 42

[0502] The following reference Fig.42 The optical lens according to Embodiment 42 of the present disclosure is described. Fig.42 As shown, compared with Example 1, the main differences of this embodiment are: the optical parameters such as the curvature radius of each lens surface and the lens thickness are different; the first side surface S1 of the first lens L1 is convex, and the second side surface S2 is concave; the first side surface S3 of the second lens L2 is convex; the second side surface S6 of the third lens L3 is concave; the fourth lens L4 has negative optical power, and the first side surface S7 thereof is concave; the fifth lens L5 has positive optical power.

[0503] Table 83 shows the basic parameter table of the optical lens of Example 42.

[0504] Table 83

[0505]

[0506] In Example 42, the first side surface S9 and the second side surface S10 of the fifth lens L5 and the first side surface S11 and the second side surface S12 of the sixth lens L6 are aspherical surfaces. Table 84 shows the conic coefficients and high-order coefficients of various aspherical surfaces that can be used in Example 42.

[0507] Table 84

[0508]

[0509] The MTF value of the edge field of the optical lens of Example 42 at the spatial frequency of 50lp / mm (line pairs / millimeter) is 0.57. In the point diagram RMS, the root mean square radius of the spot of the edge field on the image plane is 48μm. In terms of diffraction circle energy, within a circle with a diameter of 15μm on the image plane, the proportion of the spot energy in the total light energy exceeds %. Therefore, the optical lens given in Example 42 has good imaging quality.

[0510] Table 85-1 gives the basic parameters of the optical lenses in Examples 1 to 14, such as F, ENPD, TTL, FOV, θ, H, D, BFL, F1, F2, F3, F4, F5, F6 and D10.

[0511] Table 85-1

[0512]

[0513] Table 85-2 gives the basic parameters of the optical lenses in Examples 15 to 28, such as F, ENPD, TTL, FOV, θ, H, D, BFL, F1, F2, F3, F4, F5, F6 and D10.

[0514] Table 85-2

[0515]

[0516] Table 85-3 gives the basic parameters of the optical lenses in Examples 29 to 42, such as F, ENPD, TTL, FOV, θ, H, D, BFL, F1, F2, F3, F4, F5, F6 and D10.

[0517] Table 85-3

[0518]

[0519] In summary, the conditional expressions of each of Examples 1 to 14 satisfy the relationship shown in Table 86-1.

[0520] Table 86-1

[0521]

[0522] The conditional expressions of each of Examples 15 to 28 satisfy the relationship shown in Table 86-2.

[0523] Table 86-2

[0524]

[0525] The conditional expressions of each embodiment in Examples 29 to 42 satisfy the relationship shown in Table 86-3.

[0526] Table 86-3

[0527]

[0528] The present disclosure also provides an electronic device, which includes the optical lens in the above exemplary embodiment and an imaging element for converting an optical image formed by the optical lens into an electrical signal, wherein the imaging element is disposed on the second side of the optical lens, for example, on the imaging surface of the second side, and may be, for example, a photosensitive coupling device (CCD) or a complementary metal oxide semiconductor device (CMOS). Light from the first side is imaged on the second side after passing through the optical lens.

[0529] The present disclosure also provides an electronic device, which includes the optical lens and a light source in the above exemplary embodiment, wherein the light source is located on the second side of the optical lens. Light emitted by the light source is projected onto the first side of the optical lens after passing through the optical lens, and forms an image or illuminates an area on the first side.

[0530] The present disclosure also provides an electronic device, which includes a first device and a second device, wherein the first device may be, for example, a laser radar transmitting device, and the second device may be, for example, a laser radar receiving device. The first device may include the optical lens and the light source in the above exemplary embodiment, wherein the light source is located on the second side of the optical lens, and the light emitted by the light source is projected onto the first side of the optical lens after passing through the optical lens, and forms an image or illuminates an area on the first side. The second device may include the optical lens in the above exemplary embodiment and an imaging element for converting an optical image formed by the optical lens into an electrical signal, wherein the imaging element is disposed on the second side of the optical lens (e.g., disposed on an imaging surface), and the imaging element may be, for example, a photosensitive coupling device (CCD) or a complementary metal oxide semiconductor device (CMOS), and the light from the first side is imaged on the second side after passing through the optical lens.

[0531] The above description is only a preferred embodiment of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present disclosure is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions in the present disclosure to form a technical solution.

Claims

1. An optical lens, characterized in that: The method comprises, in order from the first side to the second side along the optical axis: a first lens having negative optical power; a second lens having positive optical power; a third lens having positive refractive power; a fourth lens having optical power; a fifth lens having optical power, wherein the first side surface is convex and the second side surface is concave; a sixth lens having optical power, wherein the first side surface is convex and the second side surface is concave; Wherein, the number of lenses having optical power of the optical lens is six; At least one of the fourth lens, the fifth lens and the sixth lens has positive refractive power; The on-axis distance T12 from the second side surface of the first lens to the first side surface of the second lens and the total optical length TTL of the optical lens satisfy the following conditions: 0.07≤T12 / TTL≤0.4; The radius of curvature R9 of the first side surface of the fifth lens and the total optical length TTL of the optical lens satisfy: 0.1≤R9 / TTL≤2; The radius of curvature R10 of the second side surface of the fifth lens and the total optical length TTL of the optical lens satisfy: 0.05≤R10 / TTL≤2; The total effective focal length F of the optical lens, the effective focal length F2 of the second lens and the effective focal length F3 of the third lens satisfy: 0.01≤F / F2+F / F3≤0.

84.

2. The optical lens according to claim 1, wherein: The first side surface of the first lens is a concave surface, and the second side surface is a convex surface or a concave surface; or, The first side surface of the first lens is a convex surface, and the second side surface is a concave surface; or, The first side surface of the second lens is a convex surface, and the second side surface is a convex surface, a concave surface or a plane; or, The first side surface of the second lens is a concave surface, and the second side surface is a convex surface; or, The first side surface of the third lens is a convex surface, and the second side surface is a convex surface, a concave surface or a plane; or, The first side surface of the third lens is a concave surface, and the second side surface is a convex surface; or, The fourth lens has positive power, a first side surface is convex, and a second side surface is convex or concave; or, The fourth lens has negative optical power, a first side surface of the fourth lens is concave, and a second side surface of the fourth lens is convex or concave; or The fourth lens has negative optical power, a first side surface of the fourth lens is convex, and a second side surface of the fourth lens is concave.

3. The optical lens according to claim 1 or 2, wherein: The optical lens satisfies at least one of the following conditions: 0.5≤F / ENPD≤1.3,0<D / H / FOV×1°≤0.14,0.1mm -1 ≤D / H / F≤0.25mm -1 ,0.2≤(F×θ) / D≤0.51,53°≤(FOV×F) / H≤62°,-0.08≤(H / 2-F×θ / 2) / (F×θ / 2)≤0.08,1.8≤D / H≤4.2, Among them, F is the total effective focal length of the optical lens, ENPD is the entrance pupil diameter of the optical lens, D is the maximum light clearance aperture of the first side of the first lens corresponding to the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, FOV is the maximum field of view of the optical lens, and θ is the radian value of the maximum field of view of the optical lens.

4. The optical lens according to claim 1 or 2, wherein: The optical lens satisfies at least one of the following conditions: -5.6≤F1 / F≤-0.6, -17≤|R1| / F1≤-0.1, -7.7≤F1 / T12≤-0.4, Among them, F1 is the effective focal length of the first lens, F is the total effective focal length of the optical lens, R1 is the radius of curvature of the first side surface of the first lens, and T12 is the axial distance from the second side surface of the first lens to the first side surface of the second lens.

5. The optical lens according to claim 1 or 2, wherein: The effective focal length F2 of the second lens and the total effective focal length F of the optical lens satisfy: 1≤F2 / F≤15.

6. The optical lens according to claim 1 or 2, wherein: The effective focal length F3 of the third lens and the total effective focal length F of the optical lens satisfy: 1≤F3 / F≤25.

7. The optical lens according to claim 1 or 2, wherein: The effective focal length F4 of the fourth lens and the total effective focal length F of the optical lens satisfy: 1≤|F4| / F≤36.

8. The optical lens according to claim 1 or 2, wherein: The optical lens satisfies at least one of the following conditions: 1.3≤|F5| / F≤17, 0.1≤R9 / R10≤3.9, 0.2≤R9 / (CT5+R10)≤3.2, 5mm≤D10×BFL / H≤53mm, 1.6≤F / H≤2, 0.4≤F / R9+F / R10≤4.8, Among them, F5 is the effective focal length of the fifth lens, F is the total effective focal length of the optical lens, R9 is the curvature radius of the first side surface of the fifth lens, R10 is the curvature radius of the second side surface of the fifth lens, CT5 is the center thickness of the fifth lens on the optical axis, D10 is the maximum light clearance aperture of the second side surface of the fifth lens corresponding to the maximum field of view angle of the optical lens, BFL is the back focal length of the optical lens, and H is the image height corresponding to the maximum field of view angle of the optical lens.

9. The optical lens according to claim 1 or 2, wherein: The optical lens satisfies at least one of the following conditions: 1.3≤|F6| / F≤27, 0.2≤R11 / R12≤2.1, 0.01≤F / R11+F / R12≤4.6, 0.17≤R11 / (CT6+R12)≤1.36, Among them, F6 is the effective focal length of the sixth lens, F is the total effective focal length of the optical lens, R11 is the curvature radius of the first side surface of the sixth lens, R12 is the curvature radius of the second side surface of the sixth lens, and CT6 is the center thickness of the sixth lens on the optical axis.

10. The optical lens according to claim 1 or 2, wherein: The maximum light clearance diameter D of the first side surface of the first lens corresponding to the maximum field angle of the optical lens and the maximum light clearance diameter D10 of the second side surface of the fifth lens corresponding to the maximum field angle of the optical lens satisfy: 0.1≤D / D10≤3.

6.

11. The optical lens according to claim 1 or 2, wherein: The center thickness CT2 of the second lens on the optical axis, the axial distance T23 from the second side surface of the second lens to the first side surface of the third lens, the center thickness CT3 of the third lens on the optical axis, the axial distance T34 from the second side surface of the third lens to the first side surface of the fourth lens and the total optical length TTL of the optical lens satisfy: 0.05≤(CT2+T23+CT3+T34) / TTL≤0.

6.

12. The optical lens according to claim 1 or 2, wherein: The total optical length TTL of the optical lens and the total effective focal length F of the optical lens satisfy: 2.2≤TTL / F≤5.

7.

13. The optical lens according to claim 1 or 2, wherein: The total optical length TTL of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, and the maximum field of view angle FOV of the optical lens satisfy: 0.12≤TTL / H / FOV×1°≤0.

34.

14. The optical lens according to claim 1 or 2, wherein: The total optical length TTL of the optical lens and the back focal length BFL of the optical lens satisfy: <BFL / TTL≤0.20。 15. The optical lens according to claim 1 or 2, wherein: The curvature radius R11 of the first side surface of the sixth lens and the total optical length TTL of the optical lens satisfy the following: 0.01≤R11 / TTL≤0.

57.

16. The optical lens according to claim 1 or 2, wherein: The curvature radius R12 of the second side surface of the sixth lens and the total optical length TTL of the optical lens satisfy the following: 0.01≤R12 / TTL≤0.

58.

17. The optical lens according to claim 1 or 2, wherein: The maximum field of view FOV of the optical lens and the total effective focal length F of the optical lens satisfy the following conditions: 1.6° / mm≤FOV / F≤2.1° / mm.

18. The optical lens according to claim 1 or 2, wherein: The optical lens satisfies at least one of the following conditions: 0.11≤T12 / TTL≤0.38,0.16≤R9 / TTL≤1.2,0.1≤R10 / TTL≤1.1,0.7≤F / ENPD≤1.1,0.07≤D / H / FOV×1°≤0.12,0.13mm -1 ≤D / H / F≤0.22mm -1 ,0.26≤(F×θ) / D≤0.45,54°≤(FOV×F) / H≤61°,-0.05≤(H / 2-F×θ / 2) / (F×θ / 2)≤0.05,2.2≤D / H≤4,-4.6≤F1 / F≤-1.6,-10.5≤|R1| / F1≤-0.2,-5.7≤F1 / T12≤-1.4,2.0≤F2 / F≤11.5,2.2≤F3 / F≤18,1.4≤|F4| / F≤22.2,1.8≤|F5| / F≤12.5,0.3≤R9 / R10≤2.5,0.28≤R9 / (CT5+R10)≤2.1,7mm≤D10×BFL / H≤37mm,1.7≤F / H≤1.9,0.7≤F / R9+F / R10≤3.3,1.4≤|F6| / F≤17.5,0.59≤R11 / R12≤1.7,0.9≤F / R11+F / R12≤3.7,0.4≤R11 / (CT6+R12)≤1.2,0.8≤D / D10≤3,0.17≤F / F2+F / F3≤0.67,0.11≤(CT2+T23+CT3+T34) / TTL≤0.47,2.9≤TTL / F≤5.1,0.17≤TTL / H / FOV×1°≤0.3,0.07≤BFL / TTL≤0.17,0.10≤R11 / TTL≤0.42,0.12≤R12 / TTL≤0.47,1.7° / mm≤FOV / F≤2.0° / mm, Wherein, T12 is the axial distance from the second side surface of the first lens to the first side surface of the second lens, TTL is the total optical length of the optical lens, R9 is the curvature radius of the first side surface of the fifth lens, R10 is the curvature radius of the second side surface of the fifth lens, F is the total effective focal length of the optical lens, ENPD is the entrance pupil diameter of the optical lens, D is the maximum clear aperture of the first side surface of the first lens corresponding to the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, FOV is the maximum field of view of the optical lens, θ is the radian value of the maximum field of view of the optical lens, F1 is the effective focal length of the first lens, R1 is the curvature radius of the first side surface of the first lens, F2 is the effective focal length of the second lens, F3 is the effective focal length of the third lens, and F4 is the effective focal length of the third lens. The effective focal length of the four lenses, F5 is the effective focal length of the fifth lens, CT5 is the center thickness of the fifth lens on the optical axis, D10 is the maximum clear aperture of the second side surface of the fifth lens corresponding to the maximum field of view of the optical lens, BFL is the back focal length of the optical lens, F6 is the effective focal length of the sixth lens, R11 is the radius of curvature of the first side surface of the sixth lens, R12 is the radius of curvature of the second side surface of the sixth lens, CT6 is the center thickness of the sixth lens on the optical axis, CT2 is the center thickness of the second lens on the optical axis, T23 is the on-axis distance from the second side surface of the second lens to the first side surface of the third lens, CT3 is the center thickness of the third lens on the optical axis, and T34 is the on-axis distance from the second side surface of the third lens to the first side surface of the fourth lens.

19. An electronic device, characterized in that: include: The optical lens according to any one of claims 1 to 18; as well as at least one of an imaging element and a light source, Wherein, the imaging element is used to convert the optical image or optical information formed by the optical lens into an electrical signal; The light source is located on the second side of the optical lens, and the light emitted by the light source is projected to the first side of the optical lens after passing through the optical lens, and forms an image or illuminates an area on the first side of the optical lens.

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