Optical lenses and electronic equipment

Abstract

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

Description

Technical Field

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

[0002] With the development of science and technology and the widespread application of high-tech, automobile assisted driving technology is also gradually developing and maturing. Optical lenses are also increasingly used in automobiles. Optical lenses are essential components in machine vision systems, and the quality of optical lenses directly affects the quality of imaging. In recent years, with the popularity of reversing imaging devices in automobiles, the market has increasingly higher requirements for the performance of optical lenses used in automobile assisted driving systems. Summary of the invention

[0003] The present application provides an optical lens, which includes, in order from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, characterized in that: the first lens has negative optical power, its object side surface is convex, and its image side surface is concave; the second lens has negative optical power, its object side surface is concave, and its image side surface is convex; the third lens has positive optical power, its object side surface is convex, and its image side surface is convex; the fourth lens has optical power; the fifth lens has optical power; the sixth lens has positive optical power; and the seventh lens has positive optical power.

[0004] In one embodiment, the fourth lens has positive optical power, and its object side surface is convex, and its image side surface is convex. In addition, the fifth lens has negative optical power, and its object side surface is concave, and its image side surface is convex.

[0005] In one embodiment, the fourth lens has negative optical power, and its object side surface is concave, and its image side surface is concave. In addition, the fifth lens has positive optical power, and its object side surface is convex, and its image side surface is convex.

[0006] In one embodiment, the fourth lens and the fifth lens are cemented to form a cemented lens.

[0007] In one embodiment, the object-side surface of the sixth lens is convex, and the image-side surface is convex.

[0008] In one embodiment, the object-side surface of the sixth lens is a convex surface, and the image-side surface is a flat surface.

[0009] In one embodiment, the object-side surface of the sixth lens is convex, and the image-side surface is concave.

[0010] In one embodiment, the object-side surface of the seventh lens element is convex, and the image-side surface is convex.

[0011] In one embodiment, the object-side surface of the seventh lens element is a convex surface, and the image-side surface is a flat surface.

[0012] In one embodiment, the object-side surface of the seventh lens element is convex, and the image-side surface is concave.

[0013] In one embodiment, the maximum field of view FOV of the optical lens, the total effective focal length F of the optical lens, and the image height H corresponding to the maximum field of view FOV of the optical lens may satisfy: (FOV×F) / H≥65.

[0014] In one embodiment, the distance TTL from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis and the total effective focal length F of the optical lens may satisfy: TTL / F≤12.

[0015] In one embodiment, the distance TTL from the object side of the first lens to the imaging surface of the optical lens on the optical axis, the image height H corresponding to the maximum field of view FOV of the optical lens, and the maximum field of view FOV of the optical lens may satisfy: TTL / H / FOV≤0.25.

[0016] In one embodiment, a distance BFL from the image side surface of the seventh lens to the imaging surface of the optical lens on the optical axis and a distance TL from the object side surface of the first lens to the image side surface of the seventh lens on the optical axis may satisfy: BFL / TL≥0.04.

[0017] In one embodiment, the entrance pupil diameter ENPD of the optical lens and the distance TTL from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis may satisfy: ENPD / TTL≥0.02.

[0018] In one embodiment, the effective focal power F6 of the sixth lens and the effective focal length F7 of the seventh lens may satisfy: 0.1≤|F6 / F7|≤5.

[0019] In one embodiment, a central curvature radius R3 of the object-side surface of the second lens, a central curvature radius R4 of the image-side surface of the second lens, and a central thickness d2 of the second lens may satisfy: 0≤R3 / (R4+d2)≤4.

[0020] In one embodiment, the total effective focal length F of the optical lens and the central curvature radius R1 of the object-side surface of the first lens may satisfy: |F / R1|≤3.

[0021] In one embodiment, a central curvature radius R2 of the image-side surface of the first lens and an effective focal length F1 of the first lens may satisfy: R2 / F1≤-0.6.

[0022] The present application adopts seven lenses, and by optimizing the shape, optical focal length, etc. of each lens, the optical lens has at least one beneficial effect of high resolution, miniaturization, large aperture, easy assembly, and good temperature performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, purposes and advantages of the present application will become more apparent through the following detailed description of non-limiting embodiments in conjunction with the accompanying drawings. In the accompanying drawings:

[0024] Figure 1 A schematic diagram showing the structure of an optical lens according to Embodiment 1 of the present application;

[0025] Figure 2 A schematic diagram showing the structure of an optical lens according to Embodiment 2 of the present application;

[0026] Figure 3 A schematic diagram showing the structure of an optical lens according to Embodiment 3 of the present application;

[0027] Figure 4 A schematic diagram showing the structure of an optical lens according to Embodiment 4 of the present application;

[0028] Figure 5 A schematic diagram showing the structure of an optical lens according to Embodiment 5 of the present application;

[0029] Figure 6 A schematic diagram showing the structure of an optical lens according to Embodiment 6 of the present application;

[0030] Figure 7 A schematic diagram showing the structure of an optical lens according to Embodiment 7 of the present application;

[0031] Figure 8 A schematic diagram showing the structure of an optical lens according to Example 8 of the present application;

[0032] Fig. 9 A schematic diagram showing the structure of an optical lens according to Example 9 of the present application;

[0033] Fig.10 A schematic diagram showing the structure of an optical lens according to Embodiment 10 of the present application;

[0034] Fig.11 A schematic diagram showing the structure of an optical lens according to Embodiment 11 of the present application; and

[0035] Fig.12 A schematic diagram showing the structure of an optical lens according to Example 12 of the present application. DETAILED DESCRIPTION

[0036] In order to better understand the present application, a more detailed description will be made of various aspects of the present application with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and are not intended to limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0037] 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 application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0038] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for ease of explanation. 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 only examples and are not drawn strictly to scale.

[0039] 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 subject is called the object side of the lens, and the surface of each lens closest to the imaging side is called the image side of the lens.

[0040] It should also be understood that the terms "comprises", "including", "having", "includes" and / or "comprising", when used in this specification, indicate the presence of the stated features, elements and / or components, but do not exclude the presence or addition of one or more other features, elements, components and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire listed features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present application, "may" is used to mean "one or more embodiments of the present application". And, the term "exemplary" is intended to refer to an example or illustration.

[0041] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this article have the same meaning as commonly understood by ordinary technicians in the field to which this application belongs. It should also be understood that terms (such as terms defined in commonly used dictionaries) should be interpreted as having the same meaning as 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 article.

[0042] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0043] The features, principles and other aspects of the present application are described in detail below.

[0044] In an exemplary embodiment, the optical lens includes, for example, seven lenses having optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens, which are arranged in sequence from the object side to the image side along the optical axis.

[0045] In an exemplary embodiment, the optical lens may further include a photosensitive element disposed on the imaging surface. Optionally, the photosensitive element disposed on the imaging surface may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS).

[0046] In an exemplary embodiment, the first lens may have a negative optical power, and its object side surface may be a convex surface, and the image side surface may be a concave surface. This optical power setting of the first lens can improve the imaging quality while avoiding excessive divergence of the object side light, which is beneficial to control the aperture of the rear lens. This surface setting of the first lens is conducive to collecting large field of view light to enter the rear optical system, increasing the amount of light passing, and thus facilitating the realization of an overall large field of view range; at the same time, the object side surface is set as a convex surface, which is conducive to the lens adapting to the outdoor use environment (such as water droplets sliding off in bad weather such as rain and snow), and reducing the impact on imaging.

[0047] In an exemplary embodiment, the second lens may have negative optical power, its object side surface may be concave, and its image side surface may be convex. Such an optical power and surface shape of the second lens can further diverge the light to adjust the light and reduce chromatic aberration.

[0048] In an exemplary embodiment, the third lens may have positive power, and its object side surface may be convex, and its image side surface may be convex. The third lens has such a power and surface configuration that it can converge light to adjust the light so that the light trend can smoothly transition to the rear. By controlling the focal length of the third lens, the light trend from the first lens to the third lens is controlled, making the lens structure compact.

[0049] In example embodiments, the fourth lens may have positive or negative power; and the fifth lens may have positive or negative power.

[0050] In an exemplary embodiment, the sixth lens may have positive power. The sixth lens may have a convex-convex surface type, a convex-flat surface type, or a convex-concave surface type. The setting of the power and surface type of the sixth lens is conducive to converging the light to adjust the light so that the light trend can be more smoothly transitioned to the rear.

[0051] In an exemplary embodiment, the seventh lens may have a positive optical power. The seventh lens may have a convex-convex surface type, a convex-flat surface type, or a convex-concave surface type. The setting of the optical power and surface type of the seventh lens can further converge the light collected by the sixth lens, which can effectively reduce the system CRA, etc., making the optical lens more suitable for use in a weak light environment. At the same time, the focal lengths of the two adjacent lenses are similar, which is conducive to improving the resolution quality.

[0052] In an exemplary embodiment, the fourth lens may have positive power, its object side surface may be convex, and its image side surface may be convex. In addition, the fifth lens may have negative power, its object side surface may be concave, and its image side surface may be convex.

[0053] In an exemplary embodiment, the fourth lens may have negative power, its object side surface may be concave, and its image side surface may be concave. In addition, the fifth lens may have positive power, its object side surface may be convex, and its image side surface may be convex.

[0054] In an exemplary embodiment, the optical lens according to the present application may satisfy: (FOV×F) / H≥65, where FOV is the maximum field of view of the optical lens, F is the total effective focal length of the optical lens, and H is the image height corresponding to the maximum field of view FOV of the optical lens. More specifically, FOV, F, and H may further satisfy: (FOV×F) / H≥70. Satisfying (FOV×F) / H≥65 is conducive to achieving a wide angle.

[0055] In an exemplary embodiment, the optical lens according to the present application may satisfy: TTL / F≤12, wherein TTL is the distance from the object side of the first lens to the imaging surface of the optical lens on the optical axis, and F is the total effective focal length of the optical lens. More specifically, TTL and F may further satisfy: TTL / F≤11.5. Satisfying TTL / F≤12 is conducive to miniaturization of the optical lens.

[0056] In an exemplary embodiment, the optical lens according to the present application may satisfy: TTL / H / FOV≤0.25, wherein TTL is the distance from the object side of the first lens to the imaging surface of the optical lens on the optical axis, H is the image height corresponding to the maximum field of view FOV of the optical lens, and FOV is the maximum field of view of the optical lens. More specifically, TTL, H and FOV may further satisfy: TTL / H / FOV≤0.20. Satisfying TTL / H / FOV≤0.25 is conducive to miniaturization of the optical lens.

[0057] In an exemplary embodiment, the optical lens according to the present application may satisfy: BFL / TL≥0.04, wherein BFL is the distance from the image side of the seventh lens to the imaging surface of the optical lens on the optical axis, and TL is the distance from the object side of the first lens to the image side of the seventh lens on the optical axis. More specifically, BFL and TL may further satisfy: BFL / TL≥0.05. Satisfying BFL / TL≥0.04 is conducive to achieving a longer back focal length of the optical lens while realizing the miniaturization of the optical lens, which is conducive to the assembly of the optical lens module.

[0058] In an exemplary embodiment, the optical lens according to the present application may satisfy: ENPD / TTL≥0.02, where ENPD is the entrance pupil diameter of the optical lens, and TTL is the distance from the object side of the first lens to the imaging surface of the optical lens on the optical axis. More specifically, ENPD and TTL may further satisfy: ENPD / TTL≥0.03. Satisfying ENPD / TTL≥0.02 can ensure that a clear image can be achieved in a low-light environment or at night.

[0059] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.1≤|F6 / F7|≤5, where F6 is the effective focal length of the sixth lens and F7 is the effective focal length of the seventh lens. More specifically, F6 and F7 may further satisfy: 0.2≤|F6 / F7|≤4. Satisfying 0.1≤|F6 / F7|≤5 is conducive to smooth transition of light and improved resolution quality.

[0060] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0≤R3 / (R4+d2)≤4, wherein R3 is the central curvature radius of the object side of the second lens, R4 is the central curvature radius of the image side of the second lens, and d2 is the central thickness of the second lens. More specifically, R3, R4 and d2 may further satisfy: 0.2≤R3 / (R4+d2)≤3. Satisfying 0≤R3 / (R4+d2)≤4 can make the peripheral light and the central light of the optical lens have an optical path difference, can diverge the central light, and enter the rear optical system, which is conducive to reducing the front port diameter of the lens, reducing the volume of the optical lens, and is conducive to miniaturization of the optical lens and reducing costs.

[0061] In an exemplary embodiment, the optical lens according to the present application may satisfy: |F / R1|≤3, where F is the total effective focal length of the optical lens, and R1 is the central curvature radius of the object side of the first lens. More specifically, F and R1 may further satisfy: |F / R1|≤1. Satisfying |F / R1|≤3 can avoid the problem of too large central curvature radius of the object side of the first lens, thereby effectively avoiding aberration when light is incident, which is beneficial to the production of the first lens.

[0062] In an exemplary embodiment, the optical lens according to the present application may satisfy: R2 / F1≤-0.6, where R2 is the central curvature radius of the image side of the first lens, and F1 is the effective focal length of the first lens. More specifically, R2 and F1 may further satisfy: R2 / F1≤-0.61. Satisfying R2 / F1≤-0.6 is conducive to reducing the tolerance sensitivity of the first lens and is conducive to the assembly of the lens.

[0063] In an exemplary embodiment, the optical lens according to the present application may satisfy: |F1 / F|≥1, where F1 is the effective focal length of the first lens and F is the total effective focal length of the optical lens. More specifically, F1 and F may further satisfy: 90≥|F1 / F|≥1.5. Satisfying |F1 / F|≥1 is conducive to reducing the front port diameter and improving the imaging quality.

[0064] In an exemplary embodiment, the optical lens according to the present application may satisfy: |F2 / F|≥1, where F2 is the effective focal length of the second lens, and F is the total effective focal length of the optical lens. More specifically, F2 and F may further satisfy: |F2 / F|≥2. Satisfying |F2 / F|≥1 is conducive to improving imaging quality.

[0065] In an exemplary embodiment, the optical lens according to the present application may satisfy: |F3 / F|≥1.5, where F3 is the effective focal length of the third lens, and F is the total effective focal length of the optical lens. More specifically, F3 and F may further satisfy: 90≥|F3 / F|≥2. Satisfying |F3 / F|≥1.5 can control the light trend from the first lens to the third lens, making the lens structure compact, which is conducive to miniaturization.

[0066] In an exemplary embodiment, the optical lens according to the present application may satisfy: |F4 / F|≥0.5, where F4 is the effective focal length of the fourth lens, and F is the total effective focal length of the optical lens. More specifically, F4 and F may further satisfy: 90≥|F4 / F|≥1. Satisfying |F4 / F|≥0.5 is conducive to reducing the front port diameter and improving the imaging quality.

[0067] In an exemplary embodiment, the optical lens according to the present application may satisfy: |F5 / F|≥0.5, where F5 is the effective focal length of the fifth lens, and F is the total effective focal length of the optical lens. More specifically, F5 and F may further satisfy: 90≥|F5 / F|≥1. Satisfying |F5 / F|≥0.5 is conducive to improving imaging quality.

[0068] In an exemplary embodiment, the optical lens according to the present application may satisfy: |F6 / F|≥0.5, where F6 is the effective focal length of the sixth lens, and F is the total effective focal length of the optical lens. More specifically, F6 and F may further satisfy: 90≥|F6 / F|≥1. Satisfying |F6 / F|≥0.5 is conducive to improving imaging quality.

[0069] In an exemplary embodiment, the optical lens according to the present application may satisfy: |F7 / F|≥3, where F7 is the effective focal length of the seventh lens, and F is the total effective focal length of the optical lens. More specifically, F7 and F may further satisfy: 90≥|F7 / F|≥4. Satisfying |F7 / F|≥3 is conducive to improving imaging quality.

[0070] In an exemplary embodiment, the optical lens according to the present application may satisfy: tan(FOV)≥2, where FOV is the maximum field of view of the optical lens. More specifically, FOV may further satisfy: tan(FOV)≥3. Satisfying tan(FOV)≥2 can make the lens have as large a field of view as possible while ensuring the imaging quality of the lens.

[0071] In an exemplary embodiment, a diaphragm for limiting the light beam may be provided between the third lens and the fourth lens to further improve the imaging quality of the optical lens. The diaphragm is conducive to increasing the diaphragm aperture to meet night vision requirements. In an embodiment of the present application, the diaphragm may be provided near the image side surface of the third lens, or near the object side surface of the fourth lens. However, it should be noted that the position of the diaphragm disclosed herein is only an example and not a limitation; in alternative embodiments, the diaphragm may also be provided at other positions according to actual needs.

[0072] In an exemplary embodiment, as needed, the optical lens according to the present application may further include a filter disposed between the seventh lens and the imaging plane to filter light with different wavelengths. The optical lens according to the present application may further include a protective glass disposed between the seventh lens and the imaging plane to prevent damage to the image-side element (e.g., chip) of the optical lens.

[0073] As known to those skilled in the art, cemented lenses can be used to minimize or eliminate chromatic aberration. Using cemented lenses in optical lenses can improve image quality and reduce reflection loss of light energy, thereby achieving high resolution and improving the clarity of lens imaging. In addition, the use of cemented lenses can also simplify the assembly process during the lens manufacturing process.

[0074] In an exemplary embodiment, the fourth lens and the fifth lens are glued to form a glued lens. The fourth lens with convex object side and image side faces and the fifth lens with concave object side faces are glued, or the fourth lens with concave object side faces and the fifth lens with convex object side faces are glued, which is not only conducive to the smooth transition of the light emitted by the third lens to the imaging surface, reducing the total length of the optical system, but also conducive to correcting various aberrations of the optical system, so as to improve the system resolution, optimize the optical performance such as distortion and CRA under the premise of compact optical system structure. The above-mentioned gluing method between lenses has at least one of the following advantages: reducing the self-chromatic aberration, reducing the tolerance sensitivity, balancing the overall chromatic aberration of the system through the residual partial chromatic aberration; reducing the air gap between the two lenses, thereby reducing the total length of the system; reducing the assembly components between the lenses, thereby reducing the process and reducing the cost; reducing the tolerance sensitivity problems such as tilt / eccentricity of the lens unit caused by the assembly process, and improving the production yield; reducing the light loss caused by reflection between lenses, and improving the illumination; further reducing the field curvature, and effectively correcting the off-axis point aberration of the optical lens. This glued design shares the overall chromatic aberration correction of the system, effectively corrects aberrations to improve resolution, and makes the overall optical system compact to meet miniaturization requirements.

[0075] In an exemplary embodiment, the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens all have aspherical mirror surfaces. The characteristic of the aspherical lens is that the curvature changes continuously from the center of the lens to the periphery. Unlike a spherical lens with a constant curvature from the center of the lens to the periphery, the aspherical lens has a better curvature radius characteristic and has the advantages of improving distortion aberration and improving astigmatism aberration. After adopting the aspherical lens, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality of the lens. The setting of the aspherical lens helps to correct the system aberration and improve the resolution. Specifically, at least one lens of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens is an aspherical lens, which is beneficial to improving the resolution quality of the optical system.

[0076] According to the optical lens of the above-mentioned embodiment of the present application, by reasonably setting the shape and focal length of each lens, the optical system can achieve at least one beneficial effect of wide angle, short total length, and good imaging quality when only 7 lenses are used. At the same time, the optical system also takes into account the low-cost requirements of small lens volume and high production yield. The optical lens also has the characteristics of a large aperture, which can ensure clear imaging even in low-light environments or at night. At the same time, the optical lens has the advantages of good temperature adaptability, small changes in imaging effects under high and low temperature environments, stable image quality, and is conducive to accurate ranging of binocular lenses.

[0077] According to the optical lens of the above-mentioned embodiment of the present application, a cemented lens is provided to share the overall chromatic aberration correction of the system, which is beneficial for correcting the system aberration and improving the system resolution quality, and is also beneficial for making the overall structure of the optical system compact and meeting the miniaturization requirements.

[0078] In an exemplary embodiment, the first to seventh lenses in the optical lens may all be made of glass. An optical lens made of glass can suppress the deviation of the back focus of the optical lens with temperature changes to improve system stability. At the same time, the use of glass material can avoid lens imaging blur caused by high and low temperature changes in the use environment, which affects the normal use of the lens. Specifically, when focusing on resolution quality and reliability, the first to seventh lenses may all be glass aspherical lenses. Of course, in applications where temperature stability requirements are lower, the first to seventh lenses in the optical lens may also all be made of plastic. Using plastic to make optical lenses can effectively reduce production costs.

[0079] However, those skilled in the art should understand that, without departing from the technical solution claimed in the present application, the number of lenses constituting the lens can be changed to obtain the various results and advantages described in this specification. For example, although seven lenses are described as an example in the embodiment, the optical lens is not limited to including seven lenses. If necessary, the optical lens may also include other numbers of lenses.

[0080] Specific embodiments of the optical lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0081] Example 1

[0082] The following reference Figure 1 The optical lens according to Example 1 of the present application is described. Figure 1 A schematic structural diagram of an optical lens according to Example 1 of the present application is shown.

[0083] like Figure 1 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the object side to the image side along the optical axis.

[0084] The first lens L1 is a meniscus lens with negative focal power, whose object side surface S1 is convex and whose image side surface S2 is concave. The second lens L2 is a meniscus lens with negative focal power, whose object side surface S3 is concave and whose image side surface S4 is convex. The third lens L3 is a biconvex lens with positive focal power, whose object side surface S5 is convex and whose image side surface S6 is convex. The fourth lens L4 is a biconvex lens with positive focal power, whose object side surface S8 is convex and whose image side surface S9 is convex. The fifth lens L5 is a meniscus lens with negative focal power, whose object side surface S9 is concave and whose image side surface S10 is concave. The sixth lens L6 is a biconvex lens with positive focal power, whose object side surface S11 is convex and whose image side surface S12 is convex. The seventh lens L7 is a meniscus lens with positive focal power, whose object side surface S13 is convex and whose image side surface S14 is concave. The fourth lens L4 and the fifth lens L5 may be cemented to form a cemented lens.

[0085] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality. For example, the stop STO may be disposed close to the image side surface S6 of the third lens L3.

[0086] In this embodiment, the object-side surface and the image-side surface of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6 and the seventh lens L7 may all be aspherical surfaces.

[0087] Optionally, the optical lens may further include a filter L8 and / or a protective glass L8' having an object side surface S15 and an image side surface S16, wherein the filter L8 may be used to correct color deviation and the protective glass L8' may be used to protect the image sensor chip IMA located at the imaging surface S17. Light from the object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0088] Table 1 shows the radius of curvature R, thickness T (it should be understood that the thickness T of the row where S1 is located is the center thickness of the first lens L1, the thickness T of the row where S2 is located is the air space d12 between the first lens L1 and the second lens L2, and so on), refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 1.

[0089]

[0090]

[0091] Table 1

[0092] Example 2

[0093] The following reference Figure 2 An optical lens according to Embodiment 2 of the present application is described. Figure 2A schematic structural diagram of an optical lens according to Example 2 of the present application is shown.

[0094] like Figure 2 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the object side to the image side along the optical axis.

[0095] The first lens L1 is a meniscus lens with negative focal power, whose object side surface S1 is convex and whose image side surface S2 is concave. The second lens L2 is a meniscus lens with negative focal power, whose object side surface S3 is concave and whose image side surface S4 is convex. The third lens L3 is a biconvex lens with positive focal power, whose object side surface S5 is convex and whose image side surface S6 is convex. The fourth lens L4 is a biconvex lens with positive focal power, whose object side surface S8 is convex and whose image side surface S9 is concave. The fifth lens L5 is a meniscus lens with negative focal power, whose object side surface S9 is concave and whose image side surface S10 is concave. The sixth lens L6 is a convex-plano lens with positive focal power, whose object side surface S11 is convex and whose image side surface S12 is a plane. The seventh lens L7 is a meniscus lens with positive focal power, whose object side surface S13 is convex and whose image side surface S14 is concave. The fourth lens L4 and the fifth lens L5 may be cemented to form a cemented lens.

[0096] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality. For example, the stop STO may be disposed close to the image side surface S6 of the third lens L3.

[0097] In this embodiment, the object-side surface and the image-side surface of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5 and the seventh lens L7 may all be aspherical surfaces.

[0098] Optionally, the optical lens may further include a filter L8 and / or a protective glass L8' having an object side surface S15 and an image side surface S16, wherein the filter L8 may be used to correct color deviation and the protective glass L8' may be used to protect the image sensor chip IMA located at the imaging surface S17. Light from the object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0099] Table 2 shows the curvature radius R, thickness T, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 2.

[0100]

[0101]

[0102] Table 2

[0103] Example 3

[0104] The following reference Figure 3 An optical lens according to Example 3 of the present application is described. Figure 3 A schematic structural diagram of an optical lens according to Example 3 of the present application is shown.

[0105] like Figure 3 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the object side to the image side along the optical axis.

[0106] The first lens L1 is a meniscus lens with negative focal power, whose object side surface S1 is convex and whose image side surface S2 is concave. The second lens L2 is a meniscus lens with negative focal power, whose object side surface S3 is concave and whose image side surface S4 is convex. The third lens L3 is a biconvex lens with positive focal power, whose object side surface S5 is convex and whose image side surface S6 is concave. The fourth lens L4 is a biconvex lens with positive focal power, whose object side surface S8 is convex and whose image side surface S9 is convex. The fifth lens L5 is a meniscus lens with negative focal power, whose object side surface S9 is concave and whose image side surface S10 is convex. The sixth lens L6 is a meniscus lens with positive focal power, whose object side surface S11 is convex and whose image side surface S12 is concave. The seventh lens L7 is a meniscus lens with positive focal power, whose object side surface S13 is convex and whose image side surface S14 is concave. The fourth lens L4 and the fifth lens L5 may be cemented to form a cemented lens.

[0107] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality. For example, the stop STO may be disposed close to the image side surface S6 of the third lens L3.

[0108] In this embodiment, the object-side surface and the image-side surface of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6 and the seventh lens L7 may all be aspherical surfaces.

[0109] Optionally, the optical lens may further include a filter L8 and / or a protective glass L8' having an object side surface S15 and an image side surface S16, wherein the filter L8 may be used to correct color deviation and the protective glass L8' may be used to protect the image sensor chip IMA located at the imaging surface S17. Light from the object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0110] Table 3 shows the curvature radius R, thickness T, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 3.

[0111]

[0112] Table 3

[0113] Example 4

[0114] The following reference Figure 4 An optical lens according to Example 4 of the present application is described. Figure 4 A schematic structural diagram of an optical lens according to Example 4 of the present application is shown.

[0115] like Figure 4 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the object side to the image side along the optical axis.

[0116] The first lens L1 is a meniscus lens with negative focal power, whose object side surface S1 is convex and whose image side surface S2 is concave. The second lens L2 is a meniscus lens with negative focal power, whose object side surface S3 is concave and whose image side surface S4 is convex. The third lens L3 is a biconvex lens with positive focal power, whose object side surface S5 is convex and whose image side surface S6 is convex. The fourth lens L4 is a biconvex lens with positive focal power, whose object side surface S8 is convex and whose image side surface S9 is convex. The fifth lens L5 is a meniscus lens with negative focal power, whose object side surface S9 is concave and whose image side surface S10 is convex. The sixth lens L6 is a biconvex lens with positive focal power, whose object side surface S11 is convex and whose image side surface S12 is convex. The seventh lens L7 is a convex-plano lens with positive focal power, whose object side surface S13 is convex and whose image side surface S14 is a plane. The fourth lens L4 and the fifth lens L5 may be cemented to form a cemented lens.

[0117] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality. For example, the stop STO may be disposed close to the image side surface S6 of the third lens L3.

[0118] In this embodiment, the object-side surface and the image-side surface of the first lens L1 , the second lens L2 , the third lens L3 , the fourth lens L4 , the fifth lens L5 and the sixth lens L6 may all be aspherical surfaces.

[0119] Optionally, the optical lens may further include a filter L8 and / or a protective glass L8' having an object side surface S15 and an image side surface S16, wherein the filter L8 may be used to correct color deviation and the protective glass L8' may be used to protect the image sensor chip IMA located at the imaging surface S17. Light from the object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0120] Table 4 shows the curvature radius R, thickness T, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 4.

[0121]

[0122] Table 4

[0123] Example 5

[0124] The following reference Figure 5 An optical lens according to Example 5 of the present application is described. Figure 5 A schematic structural diagram of an optical lens according to Example 5 of the present application is shown.

[0125] like Figure 5 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the object side to the image side along the optical axis.

[0126] The first lens L1 is a meniscus lens with negative focal power, whose object side surface S1 is convex and whose image side surface S2 is concave. The second lens L2 is a meniscus lens with negative focal power, whose object side surface S3 is concave and whose image side surface S4 is convex. The third lens L3 is a biconvex lens with positive focal power, whose object side surface S5 is convex and whose image side surface S6 is convex. The fourth lens L4 is a biconvex lens with positive focal power, whose object side surface S8 is convex and whose image side surface S9 is convex. The fifth lens L5 is a meniscus lens with negative focal power, whose object side surface S9 is concave and whose image side surface S10 is convex. The sixth lens L6 is a biconvex lens with positive focal power, whose object side surface S11 is convex and whose image side surface S12 is convex. The seventh lens L7 is a biconvex lens with positive focal power, whose object side surface S13 is convex and whose image side surface S14 is convex. The fourth lens L4 and the fifth lens L5 may be cemented to form a cemented lens.

[0127] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality. For example, the stop STO may be disposed close to the image side surface S6 of the third lens L3.

[0128] In this embodiment, the object-side surface and the image-side surface of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6 and the seventh lens L7 may all be aspherical surfaces.

[0129] Optionally, the optical lens may further include a filter L8 and / or a protective glass L8' having an object side surface S15 and an image side surface S16, wherein the filter L8 may be used to correct color deviation and the protective glass L8' may be used to protect the image sensor chip IMA located at the imaging surface S17. Light from the object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0130] Table 5 shows the curvature radius R, thickness T, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 5.

[0131]

[0132] Table 5

[0133] Example 6

[0134] The following reference Figure 6 An optical lens according to Example 6 of the present application is described. Figure 6 A schematic structural diagram of an optical lens according to Example 6 of the present application is shown.

[0135] like Figure 6 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the object side to the image side along the optical axis.

[0136] The first lens L1 is a meniscus lens with negative focal power, whose object side surface S1 is convex and whose image side surface S2 is concave. The second lens L2 is a meniscus lens with negative focal power, whose object side surface S3 is concave and whose image side surface S4 is convex. The third lens L3 is a biconvex lens with positive focal power, whose object side surface S5 is convex and whose image side surface S6 is convex. The fourth lens L4 is a biconvex lens with positive focal power, whose object side surface S8 is convex and whose image side surface S9 is convex. The fifth lens L5 is a meniscus lens with negative focal power, whose object side surface S9 is concave and whose image side surface S10 is convex. The sixth lens L6 is a convex-plano lens with positive focal power, whose object side surface S11 is convex and whose image side surface S12 is a plane. The seventh lens L7 is a convex-plano lens with positive focal power, whose object side surface S13 is convex and whose image side surface S14 is a plane. The fourth lens L4 and the fifth lens L5 may be cemented to form a cemented lens.

[0137] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality. For example, the stop STO may be disposed close to the image side surface S6 of the third lens L3.

[0138] In this embodiment, the object-side surface and the image-side surface of the first lens L1 , the second lens L2 , the third lens L3 , the fourth lens L4 , and the fifth lens L5 may all be aspherical surfaces.

[0139] Optionally, the optical lens may further include a filter L8 and / or a protective glass L8' having an object side surface S15 and an image side surface S16, wherein the filter L8 may be used to correct color deviation and the protective glass L8' may be used to protect the image sensor chip IMA located at the imaging surface S17. Light from the object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0140] Table 6 shows the curvature radius R, thickness T, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 6.

[0141]

[0142]

[0143] Table 6

[0144] Example 7

[0145] The following reference Figure 7 An optical lens according to Example 7 of the present application is described. Figure 7 A schematic structural diagram of an optical lens according to Example 7 of the present application is shown.

[0146] like Figure 7 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the object side to the image side along the optical axis.

[0147] The first lens L1 is a meniscus lens with negative focal power, whose object side surface S1 is convex and whose image side surface S2 is concave. The second lens L2 is a meniscus lens with negative focal power, whose object side surface S3 is concave and whose image side surface S4 is convex. The third lens L3 is a biconvex lens with positive focal power, whose object side surface S5 is convex and whose image side surface S6 is convex. The fourth lens L4 is a biconvex lens with positive focal power, whose object side surface S8 is convex and whose image side surface S9 is convex. The fifth lens L5 is a meniscus lens with negative focal power, whose object side surface S9 is concave and whose image side surface S10 is convex. The sixth lens L6 is a convex-plano lens with positive focal power, whose object side surface S11 is convex and whose image side surface S12 is a plane. The seventh lens L7 is a biconvex lens with positive focal power, whose object side surface S13 is convex and whose image side surface S14 is convex. The fourth lens L4 and the fifth lens L5 may be cemented to form a cemented lens.

[0148] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality. For example, the stop STO may be disposed close to the image side surface S6 of the third lens L3.

[0149] In this embodiment, the object-side surface and the image-side surface of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5 and the seventh lens L7 may all be aspherical surfaces.

[0150] Optionally, the optical lens may further include a filter L8 and / or a protective glass L8' having an object side surface S15 and an image side surface S16, wherein the filter L8 may be used to correct color deviation and the protective glass L8' may be used to protect the image sensor chip IMA located at the imaging surface S17. Light from the object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0151] Table 7 shows the curvature radius R, thickness T, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 7.

[0152]

[0153]

[0154] Table 7

[0155] Example 8

[0156] The following reference Figure 8 An optical lens according to Example 8 of the present application is described. Figure 8 A schematic structural diagram of an optical lens according to Example 8 of the present application is shown.

[0157] like Figure 8 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the object side to the image side along the optical axis.

[0158] The first lens L1 is a meniscus lens with negative focal power, whose object side surface S1 is convex and whose image side surface S2 is concave. The second lens L2 is a meniscus lens with negative focal power, whose object side surface S3 is concave and whose image side surface S4 is convex. The third lens L3 is a biconvex lens with positive focal power, whose object side surface S5 is convex and whose image side surface S6 is convex. The fourth lens L4 is a biconvex lens with positive focal power, whose object side surface S8 is convex and whose image side surface S9 is convex. The fifth lens L5 is a meniscus lens with negative focal power, whose object side surface S9 is concave and whose image side surface S10 is convex. The sixth lens L6 is a meniscus lens with positive focal power, whose object side surface S11 is convex and whose image side surface S12 is concave. The seventh lens L7 is a convex-plano lens with positive focal power, whose object side surface S13 is convex and whose image side surface S14 is a plane. The fourth lens L4 and the fifth lens L5 may be cemented to form a cemented lens.

[0159] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality. For example, the stop STO may be disposed close to the image side surface S6 of the third lens L3.

[0160] In this embodiment, the object-side surface and the image-side surface of the first lens L1 , the second lens L2 , the third lens L3 , the fourth lens L4 , the fifth lens L5 and the sixth lens L6 may all be aspherical surfaces.

[0161] Optionally, the optical lens may further include a filter L8 and / or a protective glass L8' having an object side surface S15 and an image side surface S16, wherein the filter L8 may be used to correct color deviation and the protective glass L8' may be used to protect the image sensor chip IMA located at the imaging surface S17. Light from the object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0162] Table 8 shows the curvature radius R, thickness T, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 8.

[0163]

[0164] Table 8

[0165] Example 9

[0166] The following reference Fig. 9 An optical lens according to Example 9 of the present application is described. Fig. 9 A schematic structural diagram of an optical lens according to Example 9 of the present application is shown.

[0167] like Fig. 9As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the object side to the image side along the optical axis.

[0168] The first lens L1 is a meniscus lens with negative focal power, whose object side surface S1 is convex and whose image side surface S2 is concave. The second lens L2 is a meniscus lens with negative focal power, whose object side surface S3 is concave and whose image side surface S4 is convex. The third lens L3 is a biconvex lens with positive focal power, whose object side surface S5 is convex and whose image side surface S6 is convex. The fourth lens L4 is a biconvex lens with positive focal power, whose object side surface S8 is convex and whose image side surface S9 is convex. The fifth lens L5 is a meniscus lens with negative focal power, whose object side surface S9 is concave and whose image side surface S10 is convex. The sixth lens L6 is a meniscus lens with positive focal power, whose object side surface S11 is convex and whose image side surface S12 is concave. The seventh lens L7 is a biconvex lens with positive focal power, whose object side surface S13 is convex and whose image side surface S14 is convex. The fourth lens L4 and the fifth lens L5 may be cemented to form a cemented lens.

[0169] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality. For example, the stop STO may be disposed close to the image side surface S6 of the third lens L3.

[0170] In this embodiment, the object-side surface and the image-side surface of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6 and the seventh lens L7 may all be aspherical surfaces.

[0171] Optionally, the optical lens may further include a filter L8 and / or a protective glass L8' having an object side surface S15 and an image side surface S16, wherein the filter L8 may be used to correct color deviation and the protective glass L8' may be used to protect the image sensor chip IMA located at the imaging surface S17. Light from the object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0172] Table 9 shows the curvature radius R, thickness T, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 9.

[0173]

[0174] Table 9

[0175] Example 10

[0176] The following reference Fig.10 An optical lens according to Example 10 of the present application is described. Fig.10A schematic structural diagram of an optical lens according to Example 10 of the present application is shown.

[0177] like Fig.10 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the object side to the image side along the optical axis.

[0178] The first lens L1 is a meniscus lens with negative focal power, whose object side surface S1 is convex and whose image side surface S2 is concave. The second lens L2 is a meniscus lens with negative focal power, whose object side surface S3 is concave and whose image side surface S4 is convex. The third lens L3 is a biconvex lens with positive focal power, whose object side surface S5 is convex and whose image side surface S6 is convex. The fourth lens L4 is a biconcave lens with negative focal power, whose object side surface S8 is concave and whose image side surface S9 is concave. The fifth lens L5 is a biconvex lens with positive focal power, whose object side surface S9 is convex and whose image side surface S10 is convex. The sixth lens L6 is a biconvex lens with positive focal power, whose object side surface S11 is convex and whose image side surface S12 is convex. The seventh lens L7 is a meniscus lens with positive focal power, whose object side surface S13 is convex and whose image side surface S14 is concave. The fourth lens L4 and the fifth lens L5 may be cemented to form a cemented lens.

[0179] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality. For example, the stop STO may be disposed close to the image side surface S6 of the third lens L3.

[0180] In this embodiment, the object-side surface and the image-side surface of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6 and the seventh lens L7 may all be aspherical surfaces.

[0181] Optionally, the optical lens may further include a filter L8 and / or a protective glass L8' having an object side surface S15 and an image side surface S16, wherein the filter L8 may be used to correct color deviation and the protective glass L8' may be used to protect the image sensor chip IMA located at the imaging surface S17. Light from the object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0182] Table 10 shows the curvature radius R, thickness T, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 10.

[0183]

[0184] Table 10

[0185] Embodiment 11

[0186] The following reference Fig.11 An optical lens according to Example 11 of the present application is described. Fig.11 A schematic structural diagram of an optical lens according to Example 11 of the present application is shown.

[0187] like Fig.11 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the object side to the image side along the optical axis.

[0188] The first lens L1 is a meniscus lens with negative focal power, whose object side surface S1 is convex and whose image side surface S2 is concave. The second lens L2 is a meniscus lens with negative focal power, whose object side surface S3 is concave and whose image side surface S4 is convex. The third lens L3 is a biconvex lens with positive focal power, whose object side surface S5 is convex and whose image side surface S6 is convex. The fourth lens L4 is a biconcave lens with negative focal power, whose object side surface S8 is concave and whose image side surface S9 is concave. The fifth lens L5 is a biconvex lens with positive focal power, whose object side surface S9 is convex and whose image side surface S10 is convex. The sixth lens L6 is a convex-plano lens with positive focal power, whose object side surface S11 is convex and whose image side surface S12 is a plane. The seventh lens L7 is a meniscus lens with positive focal power, whose object side surface S13 is convex and whose image side surface S14 is concave. The fourth lens L4 and the fifth lens L5 may be cemented to form a cemented lens.

[0189] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality. For example, the stop STO may be disposed close to the image side surface S6 of the third lens L3.

[0190] In this embodiment, the object-side surface and the image-side surface of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5 and the seventh lens L7 may all be aspherical surfaces.

[0191] Optionally, the optical lens may further include a filter L8 and / or a protective glass L8' having an object side surface S15 and an image side surface S16, wherein the filter L8 may be used to correct color deviation and the protective glass L8' may be used to protect the image sensor chip IMA located at the imaging surface S17. Light from the object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0192] Table 11 shows the curvature radius R, thickness T, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 11.

[0193]

[0194]

[0195] Table 11

[0196] Example 12

[0197] The following reference Fig.12 An optical lens according to Example 12 of the present application is described. Fig.12 A schematic structural diagram of an optical lens according to Example 12 of the present application is shown.

[0198] like Fig.12 As shown, the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 in sequence from the object side to the image side along the optical axis.

[0199] The first lens L1 is a meniscus lens with negative focal power, whose object side surface S1 is convex and whose image side surface S2 is concave. The second lens L2 is a meniscus lens with negative focal power, whose object side surface S3 is concave and whose image side surface S4 is convex. The third lens L3 is a biconvex lens with positive focal power, whose object side surface S5 is convex and whose image side surface S6 is convex. The fourth lens L4 is a biconcave lens with negative focal power, whose object side surface S8 is concave and whose image side surface S9 is concave. The fifth lens L5 is a biconvex lens with positive focal power, whose object side surface S9 is convex and whose image side surface S10 is convex. The sixth lens L6 is a meniscus lens with positive focal power, whose object side surface S11 is convex and whose image side surface S12 is concave. The seventh lens L7 is a meniscus lens with positive focal power, whose object side surface S13 is convex and whose image side surface S14 is concave. The fourth lens L4 and the fifth lens L5 may be cemented to form a cemented lens.

[0200] The optical lens may further include a stop STO, which may be disposed between the third lens L3 and the fourth lens L4 to improve imaging quality. For example, the stop STO may be disposed close to the image side surface S6 of the third lens L3.

[0201] In this embodiment, the object-side surface and the image-side surface of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6 and the seventh lens L7 may all be aspherical surfaces.

[0202] Optionally, the optical lens may further include a filter L8 and / or a protective glass L8' having an object side surface S15 and an image side surface S16, wherein the filter L8 may be used to correct color deviation and the protective glass L8' may be used to protect the image sensor chip IMA located at the imaging surface S17. Light from the object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0203] Table 12 shows the curvature radius R, thickness T, refractive index Nd and Abbe number Vd of each lens of the optical lens of Example 12.

[0204]

[0205]

[0206] Table 12

[0207] In summary, Examples 1 to 12 respectively satisfy the relationships shown in Tables 13-1 and 13-2 below. In Table 13, the units of F, H, TTL, BFL, TL, ENPD, F1, F2, F3, F4, F5, F6, F7, R1, R2, R3, R4, and d2 are millimeters (mm), and the unit of FOV is degrees (°).

[0208]

[0209]

[0210] Table 13-1

[0211]

[0212] Table 13-2

[0213] The present application also provides an electronic device, which may include an optical lens according to the above-mentioned embodiment of the present application and an imaging element for converting an optical image formed by the optical lens into an electrical signal. The electronic device may be an independent electronic device such as a detection distance camera, or an imaging module integrated in a device such as a detection distance device. In addition, the electronic device may also be an independent imaging device such as a vehicle-mounted camera, or an imaging module integrated in a driving assistance system such as a vehicle-mounted camera.

[0214] The above description is only a preferred embodiment of the present application 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 application 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 disclosed in the present application.

Claims

1. An optical lens, characterized in that: Along the optical axis from the object side to the image side, they include: The first lens has a negative optical power, and its object side surface is convex and its image side surface is concave; The second lens has a negative optical power, and its object side surface is concave and its image side surface is convex; The third lens has positive power, and its object side surface is convex and its image side surface is convex; a fourth lens having optical power; a fifth lens having optical power; a sixth lens having positive refractive power; and a seventh lens having positive refractive power; Wherein, the number of lenses having optical power in the optical lens is seven; The effective focal length F6 of the sixth lens and the total effective focal length F of the optical lens satisfy: |F6 / F|≥5.0486; The distance TTL from the object side of the first lens to the imaging surface of the optical lens on the optical axis, the image height H corresponding to the maximum field of view FOV of the optical lens, and the maximum field of view FOV of the optical lens satisfy: TTL / H / FOV≤0.0298° -1 .

2. The optical lens according to claim 1, characterized in that: The fourth lens has positive optical power, and its object side surface is convex, and its image side surface is convex; the fifth lens has negative optical power, and its object side surface is concave, and its image side surface is convex.

3. The optical lens according to claim 1, characterized in that: The fourth lens has negative optical power, and its object side surface is concave, and its image side surface is concave; the fifth lens has positive optical power, and its object side surface is convex, and its image side surface is convex.

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

5. The optical lens according to claim 1, characterized in that: The object-side surface of the sixth lens is convex, and the image-side surface is convex.

6. The optical lens according to claim 1, characterized in that: The object side surface of the sixth lens is a convex surface, and the image side surface is a flat surface.

7. The optical lens according to claim 1, characterized in that: The object side surface of the sixth lens is convex, and the image side surface is concave.

8. The optical lens according to claim 1, characterized in that: The object-side surface of the seventh lens is convex, and the image-side surface is convex.

9. The optical lens according to claim 1, characterized in that: The object side surface of the seventh lens is a convex surface, and the image side surface is a flat surface.

10. The optical lens according to claim 1, characterized in that: The object side surface of the seventh lens is convex, and the image side surface is concave.

11. The optical lens according to any one of claims 1 to 10, characterized in that: The maximum field of view FOV of the optical lens, the total effective focal length F of the optical lens, and the image height H corresponding to the maximum field of view FOV of the optical lens satisfy: (FOV×F) / H≥65°.

12. The optical lens according to any one of claims 1 to 10, characterized in that: A distance TTL from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis and a total effective focal length F of the optical lens satisfy the following conditions: TTL / F≤12.

13. The optical lens according to any one of claims 1 to 10, characterized in that: The effective focal length F6 of the sixth lens and the total effective focal length F of the optical lens satisfy: 5.0486≤|F6 / F|≤9.

045.

14. The optical lens according to any one of claims 1 to 10, characterized in that: A distance BFL from the image side surface of the seventh lens to the imaging surface of the optical lens on the optical axis and a distance TL from the object side surface of the first lens to the image side surface of the seventh lens on the optical axis satisfy: BFL / TL≥0.

04.

15. The optical lens according to any one of claims 1 to 10, characterized in that: An entrance pupil diameter ENPD of the optical lens and a distance TTL from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis satisfy: ENPD / TTL≥0.

02.

16. The optical lens according to any one of claims 1 to 10, characterized in that: The effective focal power F6 of the sixth lens and the effective focal length F7 of the seventh lens satisfy: 0.1≤|F6 / F7|≤5.

17. The optical lens according to any one of claims 1 to 10, characterized in that: A central curvature radius R3 of the object-side surface of the second lens, a central curvature radius R4 of the image-side surface of the second lens, and a central thickness d2 of the second lens satisfy: 0≤R3 / (R4+d2)≤4.

18. The optical lens according to any one of claims 1 to 10, characterized in that: The total effective focal length F of the optical lens and the central curvature radius R1 of the object side surface of the first lens satisfy: |F / R1|≤3.

19. The optical lens according to any one of claims 1 to 10, characterized in that: A central curvature radius R2 of the image-side surface of the first lens and an effective focal length F1 of the first lens satisfy: R2 / F1≤-0.

6.

20. An optical lens, characterized in that: Along the optical axis from the object side to the image side, they include: a first lens having negative optical power; a second lens having negative optical power; a third lens having positive refractive power; a fourth lens having optical power; a fifth lens having optical power; a sixth lens having positive refractive power; a seventh lens having positive refractive power; Wherein, the number of lenses having optical power in the optical lens is seven; The effective focal length F6 of the sixth lens and the total effective focal length F of the optical lens satisfy: |F6 / F|≥5.0486; and An entrance pupil diameter ENPD of the optical lens and a distance TTL from the object side of the first lens to the imaging surface of the optical lens on the optical axis satisfy: ENPD / TTL≥0.02; The distance TTL from the object side of the first lens to the imaging surface of the optical lens on the optical axis, the image height H corresponding to the maximum field of view FOV of the optical lens, and the maximum field of view FOV of the optical lens satisfy: TTL / H / FOV≤0.0298° -1 .

21. The optical lens according to claim 20, characterized in that: The object side surface of the first lens is convex, and the image side surface is concave.

22. The optical lens according to claim 20, characterized in that: The object side surface of the second lens is concave, and the image side surface is convex.

23. The optical lens according to claim 20, characterized in that: The object side surface of the third lens is convex, and the image side surface is convex.

24. The optical lens according to claim 20, characterized in that: The fourth lens has positive optical power, and its object side surface is convex, and its image side surface is convex; the fifth lens has negative optical power, and its object side surface is concave, and its image side surface is convex.

25. The optical lens according to claim 20, characterized in that: The fourth lens has negative optical power, and its object side surface is concave, and its image side surface is concave; the fifth lens has positive optical power, and its object side surface is convex, and its image side surface is convex.

26. The optical lens according to claim 20, characterized in that: The fourth lens and the fifth lens are cemented to form a cemented lens.

27. The optical lens according to claim 20, characterized in that: The object-side surface of the sixth lens is convex, and the image-side surface is convex.

28. The optical lens according to claim 20, characterized in that: The object side surface of the sixth lens is a convex surface, and the image side surface is a flat surface.

29. The optical lens according to claim 20, characterized in that: The object side surface of the sixth lens is convex, and the image side surface is concave.

30. The optical lens according to claim 20, characterized in that: The object-side surface of the seventh lens is convex, and the image-side surface is convex.

31. The optical lens according to claim 20, characterized in that: The object side surface of the seventh lens is a convex surface, and the image side surface is a flat surface.

32. The optical lens according to claim 20, characterized in that: The object side surface of the seventh lens is convex, and the image side surface is concave.

33. The optical lens according to any one of claims 20 to 32, characterized in that: The maximum field of view FOV of the optical lens, the total effective focal length F of the optical lens, and the image height H corresponding to the maximum field of view FOV of the optical lens satisfy: (FOV×F) / H≥65°.

34. The optical lens according to any one of claims 20 to 32, characterized in that: A distance TTL from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis and a total effective focal length F of the optical lens satisfy the following conditions: TTL / F≤12.

35. The optical lens according to any one of claims 20 to 32, characterized in that: The effective focal length F6 of the sixth lens and the total effective focal length F of the optical lens satisfy: 5.0486≤|F6 / F|≤9.

045.

36. The optical lens according to any one of claims 20 to 32, characterized in that: A distance BFL from the image side surface of the seventh lens to the imaging surface of the optical lens on the optical axis and a distance TL from the object side surface of the first lens to the image side surface of the seventh lens on the optical axis satisfy: BFL / TL≥0.

04.

37. The optical lens according to any one of claims 20 to 32, characterized in that: The effective focal power F6 of the sixth lens and the effective focal length F7 of the seventh lens satisfy: 0.1≤|F6 / F7|≤5.

38. The optical lens according to any one of claims 20 to 32, characterized in that: A central curvature radius R3 of the object-side surface of the second lens, a central curvature radius R4 of the image-side surface of the second lens, and a central thickness d2 of the second lens satisfy: 0≤R3 / (R4+d2)≤4.

39. The optical lens according to any one of claims 20 to 32, characterized in that: The total effective focal length F of the optical lens and the central curvature radius R1 of the object side surface of the first lens satisfy: |F / R1|≤3.

40. The optical lens according to any one of claims 20-32, characterized in that: A central curvature radius R2 of the image-side surface of the first lens and an effective focal length F1 of the first lens satisfy: R2 / F1≤-0.

6.

41. An electronic device, characterized in that: The invention comprises the optical lens according to claim 1 or 20 and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

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