Optical lens

Abstract

The invention provides an optical lens, which comprises ten lenses with focal power and sequentially comprises a first lens with negative focal power, a second lens with positive focal power, a third lens with negative focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power from an object side to an imaging surface along an optical axis, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a concave surface, and the image side surface of the third lens is a convex surface; the object side surface of the fourth lens is a convex surface, and the object side surface of the fourth lens is a convex surface; the object side surface of the fifth lens is a concave surface, and the image side surface of the fifth lens is a convex surface; the object side surface of the sixth lens is a convex surface, and the image side surface of the sixth lens is a concave surface; the seventh lens has positive focal power; the eighth lens has positive focal power; the ninth lens has negative focal power; and the tenth lens has positive focal power. According to the optical lens provided by the invention, the imaging quality of the optical lens can be improved, the aberration is reduced, and the imaging quality of the optical lens is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of imaging lenses, and particularly to an optical lens. Background Art

[0002] In the field of modern motion image capture, a high-performance portable optical system is a core requirement. Most of the current motion camera lenses on the market adopt a large aperture and ultra-wide angle design to adapt to high-speed motion scenes and shooting in extreme environments. However, these traditional optical structures generally have problems such as a decline in imaging quality in low-light environments and insufficient dynamic range. At the same time, as the field angle of the lens increases, it becomes difficult to correct system aberrations, resulting in a decline in imaging quality; and the existing lens imaging target surface is small, making it difficult to meet market demands. Summary of the Invention

[0003] Aiming at the above problems, the purpose of the present invention is to provide an optical lens with excellent imaging quality.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows: An optical lens, the number of lenses with optical power is ten, and successively includes from the object side to the imaging surface along the optical axis: A first lens with negative optical power, its object side is convex, and its image side is concave; A second lens with negative optical power, its object side is convex, and its image side is concave; A third lens with negative optical power, its object side is concave, and its image side is convex; A fourth lens with positive optical power, its object side is convex, and its object side is convex; A fifth lens with optical power, its object side is concave, and its image side is convex; A sixth lens with negative optical power, its object side is convex, and its image side is concave; A seventh lens with positive optical power, its object side is convex, and its image side is convex; An eighth lens with positive optical power, its object side is convex, and its image side is convex; A ninth lens with negative optical power, its object side is concave, and its image side is concave; A tenth lens with positive optical power, its object side is convex, and its image side is convex.

[0005] Further preferably, the optical lens satisfies one or several of the following conditional expressions: The optical total length TTL of the optical lens and the effective focal length f of the optical lens satisfy: 5.1 < TTL / f < 7.5; The optical total length TTL of the optical lens and the true image height IH corresponding to the maximum field angle of the optical lens satisfy: 1.8 < TTL / IH < 2.。

[0006] Further preferably, the optical lens satisfies one or more of the following conditional expressions: The maximum field of view angle FOV of the optical lens and the aperture value Fno of the optical lens satisfy: 50° < FOV / Fno < 70°; The true image height IH corresponding to the maximum field of view angle of the optical lens and the entrance pupil diameter EPD of the optical lens satisfy: 7.5 < IH / EPD < 9.5.

[0007] Further preferably, the optical lens satisfies one or more of the following conditional expressions: The true image height IH corresponding to the maximum field of view angle of the optical lens and the effective focal length f of the optical lens satisfy: 2.7 < IH / f < 3.4; The true image height IH corresponding to the maximum field of view angle of the optical lens, the effective focal length f of the optical lens and the radian value θ of the maximum semi-field of view angle of the optical lens satisfy: 1 < (IH / 2) / (f×θ) < 1.16.

[0008] Further preferably, the optical lens satisfies one or more of the following conditional expressions: The total optical length TTL of the optical lens, the true image height IH 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: 8 < 180°×TTL / (IH / 2) / (FOV / 2) < 12.5; The effective focal length f of the optical lens, the true image height IH 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: 49° < f×FOV / IH < 57°.

[0009] Further preferably, the optical lens satisfies one or more of the following conditional expressions: The semi-aperture d1 of the object side of the first lens, the true image height IH 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: 0.13 < d1 / (IH / 2) / tan(FOV / 2) < 0.38; The semi-aperture d1 of the object side of the first lens and the true image height IH corresponding to the maximum field of view angle of the optical lens satisfy: 0.84 < d1 / (IH / 2) < 1.4.

[0010] Further preferably, the optical lens satisfies one or more of the following conditional formulas: The focal length f1 of the first lens and the effective focal length f of the optical lens satisfy: -1.7 < f1 / f < -1.15; The focal length f2 of the second lens and the effective focal length f of the optical lens satisfy: -8.5 < f2 / f < -3.1; The focal length f3 of the third lens and the effective focal length f of the optical lens satisfy: -8.4 < f3 / f < -4.3; The focal length f4 of the fourth lens and the effective focal length f of the optical lens satisfy: 1.4 < f4 / f < 1.8; The focal length f5 of the fifth lens and the effective focal length f of the optical lens satisfy: -95 < f5 / f < -27 or 36 < f5 / f < 75; The focal length f6 of the sixth lens and the effective focal length f of the optical lens satisfy: -11 < f6 / f < -8; The focal length f7 of the seventh lens and the effective focal length f of the optical lens satisfy: 1.4 < f7 / f < 1.8; The focal length f8 of the eighth lens and the effective focal length f of the optical lens satisfy: 1.2 < f8 / f < 1.9; The focal length f9 of the ninth lens and the effective focal length f of the optical lens satisfy: -1 < f9 / f < -0.7; The focal length f10 of the tenth lens and the effective focal length f of the optical lens satisfy: 2 < f10 / f < 4.8.

[0011] Further preferably, an aperture is provided between the fifth lens and the sixth lens or between the fourth lens and the fifth lens; The optical lens satisfies one or more of the following conditional formulas: The combined focal length fa of the lenses in front of the aperture and the effective focal length f of the optical lens satisfy: -21 < fa / f < -14 or 6.5 < fa / f < 140; The combined focal length fb of the lenses behind the aperture and the effective focal length f of the optical lens satisfy: 1.8 < fb / f < 2.6; The combined focal length fa of the lenses in front of the aperture and the combined focal length fb of the lenses behind the aperture satisfy: -9 < fa / fb < -6 or 3 < fa / fb < 60.

[0012] Further preferably, the eighth lens and the ninth lens form a cemented lens group with a negative optical power; The optical lens satisfies one or more of the following conditional formulas: The combined focal length f glue1 of the eighth lens and the ninth lens and the effective focal length f of the optical lens satisfy: -2.8 < f glue1 / f < -1.8; The focal length f8 of the eighth lens and the focal length f9 of the ninth lens satisfy: -2.1 < f8 / f9 < -1.5; The combined focal length f glue1 of the eighth lens and the ninth lens and the focal length f10 of the tenth lens satisfy: -1 < f glue1 / f10 < -0.5.

[0013] Further preferably, the optical lens satisfies one or more of the following conditional expressions: among all the lenses with positive optical power, the smallest focal length f₊ₘᵢₙ and among all the lenses with negative optical power, the largest focal length f₋ₘₐₓ satisfy: -1.9 < f₊ₘᵢₙ / f₋ₘₐₓ < -1.5; the focal length f₁ of the first lens and the focal length f₁₀ of the tenth lens satisfy: -0.7 < f₁ / f₁₀ < -0.3; the focal length f₆ of the sixth lens and the focal length f₇ of the seventh lens satisfy: -7 < f₆ / f₇ < -5; the focal length f₇ of the seventh lens and the focal length f₈ of the eighth lens satisfy: 0.9 < f₇ / f₈ < 1.2.

[0014] The optical lens provided by the present invention uses ten lenses with specific optical powers. Through specific surface shape combinations and reasonable optical power distributions, it can improve the imaging quality of the optical lens, reduce aberration, enhance the imaging quality of the optical lens, and endow the lens with one or more advantages such as miniaturization, large viewing angle, large image plane, high pixel count, and high imaging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, where: Figure 1 is a schematic structural diagram of the optical lens in Embodiment 1 of the present invention.

[0016] Figure 2 is a F-Theta distortion curve graph of the optical lens in Embodiment 1 of the present invention.

[0017] Figure 3 is an axial aberration curve graph of the optical lens in Embodiment 1 of the present invention.

[0018] Figure 4 is a MTF curve graph of the optical lens in Embodiment 1 of the present invention.

[0019] Figure 5 is a schematic structural diagram of the optical lens in Embodiment 2 of the present invention.

[0020] Figure 6 is a F-Theta distortion curve graph of the optical lens in Embodiment 2 of the present invention.

[0021] Figure 7 is an axial aberration curve graph of the optical lens in Embodiment 2 of the present invention.

[0022] Figure 8 is a MTF curve graph of the optical lens in Embodiment 2 of the present invention.

[0023] Figure 9 is a schematic structural diagram of the optical lens in Embodiment 3 of the present invention.

[0024] Figure 10 This is the F-Theta distortion curve of the optical lens in Embodiment 3 of the present invention.

[0025] Figure 11 This is an axial aberration curve of the optical lens in Embodiment 3 of the present invention.

[0026] Figure 12 This is an MTF curve of the optical lens in Embodiment 3 of the present invention.

[0027] Figure 13 This is a schematic diagram of the optical lens structure in Embodiment 4 of the present invention.

[0028] Figure 14 This is the F-Theta distortion curve of the optical lens in Embodiment 4 of the present invention.

[0029] Figure 15 This is an axial aberration curve of the optical lens in Embodiment 4 of the present invention.

[0030] Figure 16 This is the MTF curve of the optical lens in Embodiment 4 of the present invention.

[0031] Figure 17 This is a schematic diagram of the optical lens structure in Embodiment 5 of the present invention.

[0032] Figure 18 This is the F-Theta distortion curve of the optical lens in Embodiment 5 of the present invention.

[0033] Figure 19 This is an axial aberration curve of the optical lens in Embodiment 5 of the present invention.

[0034] Figure 20 This is the MTF curve of the optical lens in Embodiment 5 of the present invention.

[0035] Figure 21 This is a schematic diagram of the optical lens in Embodiment 6 of the present invention.

[0036] Figure 22 This is an F-Theta distortion curve of the optical lens in Embodiment 6 of the present invention.

[0037] Figure 23 This is an axial aberration curve of the optical lens in Embodiment 6 of the present invention.

[0038] Figure 24 This is the MTF curve of the optical lens in Embodiment 6 of the present invention.

[0039] Figure 25 This is a schematic diagram of the optical lens in Embodiment 7 of the present invention.

[0040] Figure 26 This is an F-Theta distortion curve of the optical lens in Embodiment 7 of the present invention.

[0041] Figure 27 This is an axial aberration curve of the optical lens in Embodiment 7 of the present invention.

[0042] Figure 28 This is the MTF curve of the optical lens in Embodiment 7 of the present invention.

[0043] Figure 29 This is a schematic diagram of the optical lens in Embodiment 8 of the present invention.

[0044] Figure 30 This is the F-Theta distortion curve of the optical lens in Embodiment 8 of the present invention.

[0045] Figure 31 This is an axial aberration curve of the optical lens in Embodiment 8 of the present invention.

[0046] Figure 32 This is the MTF curve of the optical lens in Embodiment 8 of the present invention.

[0047] The following detailed description, in conjunction with the accompanying drawings, will further illustrate the present invention. Detailed Implementation

[0048] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of embodiments of this application and are not intended to limit the scope of this 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.

[0049] It should be noted that in this specification, the terms "first," "second," "third," etc., are used only to distinguish one feature from another and do not imply any limitation on the features. Therefore, without departing from the teachings of the invention, the first lens discussed below may also be referred to as the second lens or the third lens.

[0050] In the accompanying drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are illustrated by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not strictly to scale.

[0051] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the location of the convexity is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the location of the concaveness is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the subject is called the object-side surface of the lens, and the surface of each lens closest to the imaging plane is called the image-side surface of the lens.

[0052] It should also be understood that the terms "comprising," "including," "having," "containing," and / or "comprising," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. Furthermore, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features, not individual elements in the list. Additionally, when describing embodiments of this application, the word "may" is used to mean "one or more embodiments of this application." And the term "exemplary" is intended to refer to an example or illustration.

[0053] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms (e.g., those defined in common dictionaries) shall be interpreted as having the meaning consistent with their meaning in the context of the relevant art and shall not be interpreted in an idealized or overly formal sense unless expressly so specified herein.

[0054] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0055] The optical lens of this invention has ten lenses with optical power, arranged sequentially along the optical axis from the object side to the imaging plane: first lens, second lens, third lens, fourth lens, fifth lens, sixth lens, seventh lens, eighth lens, ninth lens, and tenth lens.

[0056] In some embodiments, the first lens may have a negative focal power, with its object side being convex and its image side being concave. The second lens may have a negative focal power, with its object side being convex and its image side being concave. The third lens may have a negative focal power, with its object side being concave and its image side being convex. The fourth lens may have a positive focal power, with its object side being convex and its object side being convex. The fifth lens may have a positive or negative focal power, with its object side being concave and its image side being convex. The sixth lens may have a negative focal power, with its object side being convex and its image side being concave. The seventh lens may have a positive focal power, with its object side being convex and its image side being convex. The eighth lens may have a positive focal power, with its object side being convex and its image side being convex.

[0057] The ninth lens may have a negative focal power, with its object side being concave and its image side being concave. The tenth lens may have a positive focal power, with its object side being convex and its image side being convex.

[0058] In some embodiments, the optical lens may further include an aperture, which may be located between the fifth lens and the sixth lens or between the fourth lens and the fifth lens. It can be understood that the aperture is used to limit the amount of incident light to change the brightness of the imaging.

[0059] In some embodiments, the optical lens may further include a filter, which is disposed between the tenth lens and the imaging surface. The filter is used to filter out interfering light to prevent the interfering light from reaching the imaging surface of the optical lens and affecting normal imaging.

[0060] In some embodiments, the eighth lens and the ninth lens may be glued together to form a glued lens group with a negative focal power, which can effectively correct the chromatic aberration of the optical lens, reduce the eccentricity sensitivity of the optical lens, balance the aberration of the optical lens, and improve the imaging quality of the optical lens; it can also reduce the assembly sensitivity of the optical lens, thereby reducing the processing difficulty of the optical lens and improving the assembly yield of the optical lens. In some embodiments, the combined focal length f_glue1 of the eighth lens and the ninth lens and the effective focal length f of the optical lens satisfy: -2.8 < f_glue1 / f < -1.8. More specifically, -2.61 < f_glue1 / f < -2.04.

[0061] In some embodiments, the overall optical length TTL of the optical lens and the effective focal length f of the optical lens satisfy: 5.1 < TTL / f < 7.5. Meeting the above range can effectively limit the length of the lens, which is beneficial to the miniaturization of the optical lens. More specifically, 5.6 < TTL / f < 6.99.

[0062] In some embodiments, the total optical length TTL of the optical lens and the true image height IH corresponding to the maximum field angle of view of the optical lens satisfy: 1.8 < TTL / IH < 2.6. Meeting the above range ensures that, with the same total length of the lens, a larger image plane is obtained, enabling high-definition imaging with a larger-sized imaging chip, and achieving a better balance between the small total length and the large image plane of the lens. More specifically, 1.9 < TTL / IH < 2.47.

[0063] In some embodiments, the maximum field angle of view FOV of the optical lens and the aperture value Fno of the optical lens satisfy: 50° < FOV / Fno < 70°. Meeting the above range defines that the optical lens has an appropriate field angle of view and aperture value, enabling it to collect light at a large angle and obtain good imaging quality. More specifically, 53.32° < FOV / Fno < 64.1°.

[0064] In some embodiments, the true image height IH corresponding to the maximum field angle of view of the optical lens and the entrance pupil diameter EPD of the optical lens satisfy: 7.5 < IH / EPD < 9.5. Meeting the above range can increase the width of the light beam entering the optical lens, enhancing the brightness at the image plane of the optical lens and avoiding the generation of vignetting. More specifically, 7.93 < IH / EPD < 9.08.

[0065] In some embodiments, the true image height IH corresponding to the maximum field angle of view of the optical lens and the effective focal length f of the optical lens satisfy: 2.7 < IH / f < 3.4. Meeting the above range controls the image height and focal length of the optical lens within a reasonable range, contributing to the optical lens having the characteristic of a large image plane and improving the imaging quality. More specifically, 2.83 < IH / f < 3.25.

[0066] In some embodiments, the true image height IH corresponding to the maximum field angle of view of the optical lens, the effective focal length f of the optical lens, and the radian value θ of the maximum half field angle of view of the optical lens satisfy: 1 < (IH / 2) / (f×θ) < 1.16. Meeting the above range can make the lens have a small distortion value and provide a high-definition imaging effect.

[0067] In some embodiments, the total optical length TTL of the optical lens, the true image height IH corresponding to the maximum field angle of view of the optical lens, and the maximum field angle of view FOV of the optical lens satisfy: 8 < 180°×TTL / (IH / 2) / (FOV / 2) < 12.5. Meeting the above range can achieve a balance among the image height, focal length, and total optical length, improving the imaging quality of the optical lens. More specifically, 8.54 < 180°×TTL / (IH / 2) / (FOV / 2) < 11.82.

[0068] In some embodiments, the effective focal length f of the optical lens, the true image height IH corresponding to the maximum field angle of the optical lens, and the maximum field angle FOV of the optical lens satisfy: 49° < f×FOV / IH < 57°. By satisfying the above conditional formula and reasonably restricting the relationship between the focal length, field angle, and image height of the optical lens, it is beneficial to achieve the balance between the field angle of the optical lens and large target surface imaging, and better meet the usage requirements of high image quality shooting of the optical lens. More specifically, 49.62° < f×FOV / IH < 56.49°.

[0069] In some embodiments, the half aperture d1 of the object side surface of the first lens, the true image height IH corresponding to the maximum field angle of the optical lens, and the maximum field angle FOV of the optical lens satisfy: 0.13 < d1 / (IH / 2) / tan(FOV / 2) < 0.38. By satisfying the above range, the balance between the size of the optical lens, the field angle, and the image plane can be ensured.

[0070] In some embodiments, the half aperture d1 of the object side surface of the first lens and the true image height IH corresponding to the maximum field angle of the optical lens satisfy: 0.84 < d1 / (IH / 2) < 1.4. By satisfying the above range, the balance between the small front end aperture of the optical lens and the image plane can be achieved, which is beneficial to the miniaturization of the optical lens.

[0071] In some embodiments, the focal length f1 of the first lens and the effective focal length f of the optical lens satisfy: -1.7 < f1 / f < -1.15. By satisfying the above range, the first lens has an appropriate negative focal length, which is beneficial to expanding the field angle of the optical lens. More specifically, -1.6 < f1 / f < -1.26.

[0072] In some embodiments, the focal length f2 of the second lens and the effective focal length f of the optical lens satisfy: -8.5 < f2 / f < -3.1. By satisfying the above range, the second lens also uses a negative lens, which can further diverge light rays and increase the field angle of the imaging system. More specifically, -8.05 < f2 / f < -3.4.

[0073] In some embodiments, the focal length f3 of the third lens and the effective focal length f of the optical lens satisfy: -8.4 < f3 / f < -4.3. By satisfying the above range, the light path direction can be controlled, providing a more reasonable light incident angle for the subsequent lenses, improving the relative illuminance uniformity, and enhancing the imaging quality. More specifically, -7.72 < f3 / f < -4.72.

[0074] In some embodiments, the focal length f4 of the fourth lens and the effective focal length f of the optical lens satisfy: 1.4 < f4 / f < 1.8. Meeting the above range, the fourth lens converges the incident light rays at the front end, which is beneficial to correcting the aberrations and the distortion of the edge field of view brought by the front lens group, enabling the lens to have less distortion and providing a high-definition imaging effect. More specifically, 1.49 < f4 / f < 1.66.

[0075] In some embodiments, the focal length f5 of the fifth lens and the effective focal length f of the optical lens satisfy: -95 < f5 / f < -27 or 36 < f5 / f < 75. Meeting the above range is beneficial to the smooth transition of light rays, facilitating the correction of astigmatism and field curvature, improving the imaging quality of the optical lens, and ensuring the stability of the optical system. More specifically, -93.25 < f5 / f < -29.29 or 40.36 < f5 / f < 69.67.

[0076] In some embodiments, the focal length f6 of the sixth lens and the effective focal length f of the optical lens satisfy: -11 < f6 / f < -8. Meeting the above range enables full correction of various aberrations of the optical lens, can improve the resolution, and achieve high resolution. More specifically, -10.17 < f6 / f < -8.46.

[0077] In some embodiments, the focal length f7 of the seventh lens and the effective focal length f of the optical lens satisfy: 1.4 < f7 / f < 1.8. When the seventh lens meets the above conditions, it is beneficial to converge light rays while correcting the field curvature and distortion of the optical lens, improving the imaging quality of the optical lens. More specifically, 1.49 < f7 / f < 1.66.

[0078] In some embodiments, the focal length f8 of the eighth lens and the effective focal length f of the optical lens satisfy: 1.2 < f8 / f < 1.9; the focal length f9 of the ninth lens and the effective focal length f of the optical lens satisfy: -1 < f9 / f < -0.7. Meeting the above range enables the cooperation of the eighth lens with positive optical power and the ninth lens with negative optical power to adjust the optical path difference between different fields of view, improve the resolution, and is beneficial to the smooth entry of light rays into the rear lens, further reducing the field curvature and correcting the off-axis point aberrations of the optical lens. More specifically, 1.31 < f8 / f < 1.8; -0.94 < f9 / f < -0.81.

[0079] In some embodiments, the focal length f10 of the tenth lens and the effective focal length f of the optical lens satisfy: 2 < f10 / f < 4.8. When the tenth lens meets the above conditions, it helps to collect light reasonably, ensure the light transmission amount, improve the relative illumination, and enhance the brightness of the optical lens at the image plane. More specifically, 2.23 < f10 / f < 4.41.

[0080] In some embodiments, the combined focal length fa of the lenses located in front of the aperture and the effective focal length f of the optical lens satisfy: -21 < fa / f < -14 or 6.5 < fa / f < 140; the combined focal length fb of the lenses located behind the aperture and the effective focal length f of the optical lens satisfy: 1.8 < fb / f < 2.6; the combined focal length fa of the lenses located in front of the aperture and the combined focal length fb of the lenses located behind the aperture satisfy: -9 < fa / fb < -6 or 3 < fa / fb < 60. Meeting the above ranges and reasonably setting the focal lengths of the lens groups before and after the aperture is beneficial to balancing various aberrations generated by the lens group in front of the aperture and improving the overall imaging quality. More specifically, -20.6 < fa / f < -15.29 or 6.92 < fa / f < 134.18; 1.98 < fb / f < 2.43; -8.67 < fa / fb < -6.47 or 3.04 < fa / fb < 55.38.

[0081] In some embodiments, the focal length f8 of the eighth lens and the focal length f9 of the ninth lens satisfy: -2.1 < f8 / f9 < -1.5; the combined focal length f glue1 of the eighth and ninth lenses and the focal length f10 of the tenth lens satisfy: -1 < f glue1 / f10 < -0.5. Meeting the above ranges is beneficial to the smooth transition of light rays, improving the imaging quality of the optical lens and ensuring the stability of the optical system. More specifically, -1.96 < f8 / f9 < -1.59; -0.95 < f glue1 / f10 < -0.56.

[0082] In some embodiments, the smallest focal length f positive min among all the lenses with positive optical power and the largest focal length f negative max among all the lenses with negative optical power satisfy: -1.9 < f positive min / f negative max < -1.5. It can be understood that f positive min is the smallest value among all the lenses with positive optical power and has the greatest influence on the deflection of light rays; f negative max is the largest value among all the lenses with negative optical power and has the greatest influence on the deflection of light rays. Meeting the above range makes the influence of the two on the degree of light ray deflection close, which is beneficial to balancing the aberrations of the optical lens. More specifically, -1.75 < f positive min / f negative max < -1.59.

[0083] In some embodiments, the focal length f1 of the first lens and the focal length f10 of the tenth lens satisfy: -0.7 < f1 / f10 < -0.3. Meeting the above range and reasonably setting the focal length relationship between the first and last lenses in the lens can increase the area of light rays entering the imaging surface while ensuring that as many light rays as possible enter the system, which is beneficial to achieving large image surface imaging of the lens and increasing the light input amount and improving the relative illumination of the system. More specifically, -0.68 < f1 / f10 < -0.3.

[0084] In some embodiments, the focal length f6 of the sixth lens and the focal length f7 of the seventh lens satisfy: -7 < f6 / f7 < -5; the focal length f7 of the seventh lens and the focal length f8 of the eighth lens satisfy: 0.9 < f7 / f8 < 1.2. Satisfying the above ranges is beneficial to the smooth transition of light, improving the imaging quality of the optical lens and ensuring the stability of the optical system. More specifically, -6.51 < f6 / f7 < -5.36; 0.91 < f7 / f8 < 1.18.

[0085] In some embodiments, the curvature radius R1 of the object side surface of the first lens and the curvature radius R2 of the image side surface of the first lens satisfy: 0.5 < (R1 - R2) / (R1 + R2) < 0.8; the curvature radius R3 of the object side surface of the second lens and the curvature radius R4 of the image side surface of the second lens satisfy: 0.05 < (R3 - R4) / (R3 + R4) < 0.25; the curvature radius R5 of the object side surface of the third lens and the curvature radius R6 of the image side surface of the third lens satisfy: -0.4 < (R5 - R6) / (R5 + R6) < -0.15. The first lens, the second lens, and the third lens are all meniscus negative lenses, collecting as much light with a large field angle as possible and enabling the light to enter the rear system smoothly, increasing the light transmittance of the optical lens and effectively expanding the field of view range of the optical lens. More specifically, 0.61 < (R1 - R2) / (R1 + R2) < 0.72; 0.09 < (R3 - R4) / (R3 + R4) < 0.24; -0.39 < (R5 - R6) / (R5 + R6) < -0.19.

[0086] In some embodiments, the curvature radius R9 of the object side surface of the fifth lens and the curvature radius R10 of the image side surface of the fifth lens satisfy: -0.1 < (R9 - R10) / (R9 + R10) < 0. Satisfying the above range can make the fifth lens have a suitable surface shape, balance various aberrations generated by the optical lens, and improve the imaging quality of the optical lens. More specifically, -0.09 < (R9 - R10) / (R9 + R10) < 0.

[0087] In some embodiments, the curvature radius R11 of the object side surface of the sixth lens and the curvature radius R12 of the image side surface of the sixth lens satisfy: 0.15 < (R11 - R12) / (R11 + R12) < 0.4. Satisfying the above range can fully correct various aberrations of the optical lens, improve the resolution, and achieve high resolution. More specifically, 0.19 < (R11 - R12) / (R11 + R12) < 0.35.

[0088] In some embodiments, the radius of curvature R13 of the object side surface of the seventh lens and the radius of curvature R14 of the image side surface of the seventh lens satisfy: 0.3 < (R13 + R14) / (R13 - R14) < 0.5; the radius of curvature R15 of the object side surface of the eighth lens and the radius of curvature R16 of the image side surface of the eighth lens satisfy: 0.5 < (R15 + R16) / (R15 - R16) < 0.8. Satisfying the above ranges is beneficial to converging light while correcting the field curvature and distortion of the optical lens, and improving the imaging quality of the optical lens. More specifically, 0.32 < (R13 + R14) / (R13 - R14) < 0.48; 0.6 < (R15 + R16) / (R15 - R16) < 0.73.

[0089] In some embodiments, the radius of curvature R17 of the object side surface of the ninth lens and the radius of curvature R18 of the image side surface of the ninth lens satisfy: -0.5 < (R17 + R18) / (R17 - R18) < -0.2. Satisfying the above range is beneficial to increasing the divergence degree of light, increasing the area of light entering the imaging surface, achieving large target surface imaging of the lens, and improving the imaging quality of the optical lens. More specifically, -0.44 < (R17 + R18) / (R17 - R18) < -0.27.

[0090] In some embodiments, the optical lens satisfies the following conditional expressions: 4.5 mm < f < 6 mm; 1.6 mm < EPD < 2.2 mm; 28 mm < TTL < 36 mm; 2.3 < Fno < 3.2; 15° < CRA < 24°; 4.5 mm < BFL < 5.1 mm; 140° < FOV < 170°; 13 mm < IH < 17 mm. In the above conditional expressions, f represents the effective focal length of the optical lens, EPD represents the entrance pupil diameter of the optical lens, TTL represents the overall optical length of the optical lens, Fno represents the aperture value of the optical lens, CRA represents the principal ray incident angle at the maximum image height of the optical lens, BFL represents the back focal length of the optical lens, FOV represents the maximum field angle of the optical lens, and IH represents the true image height corresponding to the maximum field angle of the optical lens. Satisfying the above ranges, the optical lens has at least one or more advantages such as miniaturization, large image surface, large aperture, and large field angle. More specifically, 4.93 mm < f < 5.59 mm; 1.75 mm < EPD < 2.05 mm; 30.18 mm < TTL < 34.44 mm; 2.49 < Fno < 3.01; 15.5° < CRA < 23.92°; 4.57 mm < BFL < 5.02 mm; 149° < FOV < 160.79°; 13.99 mm < IH < 16.55 mm.

[0091] In some embodiments, the lens material in the optical lens provided by the present invention can be glass or plastic. When the lens is made of plastic, production costs can be effectively reduced. Conversely, when the lens is made of glass, the low dispersion characteristic of glass itself can effectively correct the geometric chromatic aberration of the optical system. The optical lens provided by the present invention can employ an all-glass lens structure, which can reduce dispersion, effectively correct chromatic aberration of the optical lens, and improve image quality.

[0092] In some embodiments, the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, and tenth lenses can be spherical or aspherical lenses. Compared to spherical structures, aspherical structures can effectively reduce the aberrations of the optical system, thereby reducing the number of lenses and their size, and better achieving lens miniaturization. More specifically, the second, fifth, seventh, and tenth lenses of this invention are aspherical lenses; the first, third, fourth, sixth, eighth, and ninth lenses are spherical lenses.

[0093] In various embodiments of the present invention, when an aspherical lens is used, the shapes of each aspherical surface of the optical lens satisfy the following equations: ; Where z is the distance between the surface and the vertex of the surface in the direction of the optical axis, h is the distance from the optical axis to the surface, c is the curvature of the vertex of the surface, K is the quadratic surface coefficient, and B, C, D, E, and F are the fourth, sixth, eighth, tenth, and twelfth order surface coefficients, respectively.

[0094] The present invention will be further described below with reference to several embodiments. In each embodiment, the thickness, radius of curvature, and material selection of each lens in the optical lens are different; for specific differences, please refer to the parameter tables of each embodiment. The following embodiments are merely preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the following embodiments. Any changes, substitutions, combinations, or simplifications made without departing from the innovative points of the present invention should be considered equivalent substitutions and are included within the protection scope of the present invention.

[0095] Example 1 Please see Figure 1 The diagram shown is a structural schematic of the optical lens 100 provided in Embodiment 1 of the present invention. The optical lens includes, in sequence along the optical axis from the object side to the imaging plane: a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, an aperture ST, a sixth lens L6, a seventh lens L7, an eighth lens L8, a ninth lens L9, a tenth lens L10, and a filter G1.

[0096] Among them, the first lens L1 has negative optical power, its object side S1 is convex, and its image side S2 is concave. The second lens L2 has negative optical power, its object side S3 is convex, and its image side S4 is concave. The third lens L3 has negative optical power, its object side S5 is concave, and its image side S6 is convex. The fourth lens L4 has positive optical power, and its object side S7 is convex, and its image side S8 is convex. The fifth lens L5 has negative optical power, its object side S9 is concave, and its image side S10 is convex. The sixth lens L6 has negative optical power, its object side S11 is convex, and its image side S12 is concave. The seventh lens L7 has positive optical power, its object side S13 is convex, and its image side S14 is convex. The eighth lens L8 has positive optical power, its object side S15 is convex, and its image side is convex. The ninth lens L9 has negative optical power, its object side is concave, and its image side S17 is concave. The eighth lens L8 and the ninth lens L9 form a cemented lens group with negative optical power, that is, the cemented surface of the image side of the eighth lens L8 and the object side of the ninth lens L9 is S16. The tenth lens L10 has positive optical power, its object side S18 is convex, and its image side S19 is convex. The object-side surface S20 and the image-side surface S21 of the filter G1 are both planar. The imaging plane S22 is a plane.

[0097] The first, third, fourth, sixth, eighth, and ninth lenses are glass spherical lenses, while the second, fifth, seventh, and tenth lenses are glass aspherical lenses.

[0098] The relevant parameters of each lens in the optical lens 100 in Example 1 are shown in Table 1-1.

[0099] Table 1-1 The surface profile parameters of the aspherical lens of the optical lens 100 in Example 1 are shown in Table 1-2.

[0100] Table 1-2 In this embodiment, the F-Theta distortion curve, axial aberration curve, and MTF curve of the optical lens 100 are respectively as follows: Figure 2 , Figure 3 , Figure 4 As shown.

[0101] Figure 2 The F-Theta distortion curve of Example 1 is shown, which represents the F-Theta distortion of light at different image heights on the imaging plane. The horizontal axis represents the F-Theta distortion value (unit: %), and the vertical axis represents the half field of view (unit: °). As can be seen from the figure, the F-Theta distortion of the optical lens is controlled within 0~15%, indicating that the optical lens can correct distortion well.

[0102] Figure 3 The axial aberration curve of Example 1 is shown, which represents the aberration of each wavelength on the optical axis at the imaging plane. The horizontal axis represents the axial aberration value (unit: mm), and the vertical axis represents the normalized pupil radius. As can be seen from the figure, the axial aberration offset is controlled within -0.04 mm to 0.02 mm, indicating that the optical lens can correct axial aberration well.

[0103] Figure 4 The MTF (Modulation Transfer Function) curve of Example 1 is shown, which represents the lens imaging modulation at different spatial frequencies in various fields of view. The horizontal axis represents spatial frequency (unit: lp / mm), and the vertical axis represents MTF value. As can be seen from the figure, the MTF value of this example is above 0.38 throughout the entire field of view. Within the range of 0–160 lp / mm, the MTF curve decreases smoothly and uniformly from the center to the edge of the field of view, exhibiting good imaging quality and good detail resolution at both low and high frequencies.

[0104] Example 2 Please see Figure 5 The figure shows a schematic diagram of the structure of the optical lens 200 provided in Embodiment 2 of the present invention. The optical lens in this embodiment is roughly the same as that in Embodiment 1. The main difference is that the optical parameters such as the radius of curvature, aspherical coefficient, and thickness of each lens surface are different.

[0105] The relevant parameters of each lens in the optical lens 200 in Example 2 are shown in Table 2-1.

[0106] Table 2-1 The surface profile parameters of the aspherical lens of the optical lens 200 in Example 2 are shown in Table 2-2.

[0107] Table 2-2 In this embodiment, the F-Theta distortion curve, axial aberration curve, and MTF curve of the optical lens 200 are respectively as follows: Figure 6 , Figure 7 , Figure 8 As shown. From Figure 6 As can be seen, the F-Theta distortion of the optical lens is controlled within 0-15%, indicating that the optical lens can effectively correct distortion. From... Figure 7 As can be seen, the axial aberration offset is controlled within -0.04mm to 0.03mm, indicating that the optical lens can effectively correct axial aberration. From Figure 8 As can be seen, the MTF value of this embodiment is above 0.38 throughout the entire field of view. In the range of 0 to 160 lp / mm, the MTF curve decreases smoothly and evenly from the center to the edge of the field of view, and it has good imaging quality and good detail resolution in both low and high frequency conditions.

[0108] Example 3 Please see Figure 9 The figure shows a schematic diagram of the structure of the optical lens 300 provided in Embodiment 3 of the present invention. The optical lens of this embodiment is roughly the same as that of Embodiment 1. The main difference is that the optical parameters such as the radius of curvature, aspherical coefficient, and thickness of each lens surface are different.

[0109] The relevant parameters of each lens in the optical lens 300 in Example 3 are shown in Table 3-1.

[0110] Table 3-1 The surface profile parameters of the aspherical lens of the optical lens 300 in Example 3 are shown in Table 3-2.

[0111] Table 3-2 In this embodiment, the F-Theta distortion curve, axial aberration curve, and MTF curve of the optical lens 300 are respectively as follows: Figure 10 , Figure 11 , Figure 12 As shown. From Figure 10 As can be seen, the F-Theta distortion of the optical lens is controlled within 0-10%, indicating that the optical lens can effectively correct distortion. From... Figure 11 As can be seen, the axial aberration offset is controlled within -0.02mm to 0.03mm, indicating that the optical lens can effectively correct axial aberration. From Figure 12 As can be seen, the MTF value of this embodiment is above 0.35 throughout the entire field of view. In the range of 0 to 160 lp / mm, the MTF curve decreases smoothly and evenly from the center to the edge of the field of view. It has good imaging quality and good detail resolution in both low and high frequency conditions.

[0112] Example 4 Please see Figure 13The figure shows a schematic diagram of the structure of the optical lens 400 provided in Embodiment 4 of the present invention. The optical lens in this embodiment is roughly the same as that in Embodiment 1. The main difference is that the optical parameters such as the radius of curvature, aspherical coefficient, and thickness of each lens surface are different.

[0113] The relevant parameters of each lens in the optical lens 400 in Example 4 are shown in Table 4-1.

[0114] Table 4-1 The surface profile parameters of the aspherical lens of the optical lens 400 in Example 4 are shown in Table 4-2.

[0115] Table 4-2 In this embodiment, the F-Theta distortion curve, axial aberration curve, and MTF curve of the optical lens 400 are respectively as follows: Figure 14 , Figure 15 , Figure 16 As shown. From Figure 14 As can be seen, the F-Theta distortion of the optical lens is controlled within 0-16%, indicating that the optical lens can effectively correct distortion. From... Figure 15 As can be seen, the axial aberration offset is controlled within -0.04mm to 0.03mm, indicating that the optical lens can effectively correct axial aberration. From Figure 16 As can be seen, the MTF value of this embodiment is above 0.35 throughout the entire field of view. In the range of 0 to 160 lp / mm, the MTF curve decreases smoothly and evenly from the center to the edge of the field of view. It has good imaging quality and good detail resolution in both low and high frequency conditions.

[0116] Example 5 Please see Figure 17 The figure shows a schematic diagram of the structure of the optical lens 500 provided in Embodiment 5 of the present invention. The optical lens of this embodiment is roughly the same as that of Embodiment 1. The main difference is that the optical parameters such as the radius of curvature, aspherical coefficient, and thickness of each lens surface are different.

[0117] The relevant parameters of each lens in the optical lens 500 in Example 5 are shown in Table 5-1.

[0118] Table 5-1 The surface profile parameters of the aspherical lens of the optical lens 500 in Example 5 are shown in Table 5-2.

[0119] Table 5-2 In this embodiment, the F-Theta distortion curve, axial aberration curve, and MTF curve of the optical lens 500 are respectively as follows: Figure 18 , Figure 19 , Figure 20 As shown. From Figure 18 As can be seen, the F-Theta distortion of the optical lens is controlled within 0-16%, indicating that the optical lens can effectively correct distortion. From... Figure 19 As can be seen, the axial aberration offset is controlled within -0.04mm to 0.03mm, indicating that the optical lens can effectively correct axial aberration. From Figure 20 As can be seen, the MTF value of this embodiment is above 0.3 throughout the entire field of view. In the range of 0 to 160 lp / mm, the MTF curve decreases smoothly and evenly from the center to the edge of the field of view. It has good imaging quality and good detail resolution in both low and high frequency conditions.

[0120] Example 6 Please see Figure 21 The figure shows a schematic diagram of the structure of the optical lens 600 provided in Embodiment 6 of the present invention. The optical lens in this embodiment is generally the same as that in Embodiment 1, except that: the aperture stop ST is located between the fourth lens L4 and the fifth lens L5; the fifth lens L5 has positive optical power; and the optical parameters such as the radius of curvature, aspherical coefficient, and thickness of each lens surface are different.

[0121] The relevant parameters of each lens in the optical lens 600 in Example 6 are shown in Table 6-1.

[0122] Table 6-1 The surface profile parameters of the aspherical lens of the optical lens 600 in Example 6 are shown in Table 6-2.

[0123] Table 6-2 In this embodiment, the F-Theta distortion curve, axial aberration curve, and MTF curve of the optical lens 600 are respectively as follows: Figure 22 , Figure 23 , Figure 24 As shown. From Figure 22 As can be seen, the F-Theta distortion of the optical lens is controlled within ±5%, indicating that the optical lens can effectively correct distortion. From... Figure 23 As can be seen, the axial aberration offset is controlled within -0.04mm to 0.05mm, indicating that the optical lens can effectively correct axial aberration. From Figure 24As can be seen, the MTF value of this embodiment is above 0.3 throughout the entire field of view. In the range of 0 to 160 lp / mm, the MTF curve decreases smoothly and evenly from the center to the edge of the field of view. It has good imaging quality and good detail resolution in both low and high frequency conditions.

[0124] Example 7 Please see Figure 25 The figure shows a schematic diagram of the structure of the optical lens 700 provided in Embodiment 7 of the present invention. The optical lens in this embodiment is roughly the same as that in Embodiment 1, except that: the aperture stop ST is located between the fourth lens L4 and the fifth lens L5; the fifth lens L5 has positive optical power; and the optical parameters such as the radius of curvature, aspherical coefficient, and thickness of each lens surface are different.

[0125] The relevant parameters of each lens in the optical lens 700 in Example 7 are shown in Table 7-1.

[0126] Table 7-1 The surface profile parameters of the aspherical lens of the optical lens 700 in Example 7 are shown in Table 7-2.

[0127] Table 7-2 In this embodiment, the F-Theta distortion curve, axial aberration curve, and MTF curve of the optical lens 700 are respectively as follows: Figure 26 , Figure 27 , Figure 28 As shown. From Figure 26 As can be seen, the F-Theta distortion of the optical lens is controlled within ±5%, indicating that the optical lens can effectively correct distortion. From... Figure 27 As can be seen, the axial aberration offset is controlled within -0.02mm to 0.04mm, indicating that the optical lens can effectively correct axial aberration. From Figure 28 As can be seen, the MTF value of this embodiment is above 0.38 throughout the entire field of view. In the range of 0 to 160 lp / mm, the MTF curve decreases smoothly and evenly from the center to the edge of the field of view, and it has good imaging quality and good detail resolution in both low and high frequency conditions.

[0128] Example 8 Please see Figure 29The figure shows a schematic diagram of the structure of the optical lens 800 provided in Embodiment 8 of the present invention. The optical lens in this embodiment is roughly the same as that in Embodiment 1, except that: the aperture ST is located between the fourth lens L4 and the fifth lens L5; the fifth lens L5 has positive optical power; and the optical parameters such as the radius of curvature, aspherical coefficient, and thickness of each lens surface are different.

[0129] The relevant parameters of each lens in the optical lens 800 in Example 8 are shown in Table 8-1.

[0130] Table 8-1 The surface profile parameters of the aspherical lens of the optical lens 800 in Example 8 are shown in Table 8-2.

[0131] Table 8-2 In this embodiment, the F-Theta distortion curve, axial aberration curve, and MTF curve of the optical lens 800 are respectively as follows: Figure 30 , Figure 31 , Figure 32 As shown. From Figure 30 As can be seen, the F-Theta distortion of the optical lens is controlled within 0-5%, indicating that the optical lens can effectively correct distortion. From... Figure 31 As can be seen, the axial aberration offset is controlled within -0.02mm to 0.03mm, indicating that the optical lens can effectively correct axial aberration. From Figure 32 As can be seen, the MTF value of this embodiment is above 0.4 throughout the entire field of view. In the range of 0 to 160 lp / mm, the MTF curve decreases smoothly and evenly from the center to the edge of the field of view, and it has good imaging quality and good detail resolution in both low and high frequency conditions.

[0132] Please refer to Tables 9-1 and 9-2 for the optical characteristics corresponding to the above embodiments, including the effective focal length f, total optical length TTL, aperture value Fno, true image height IH corresponding to the maximum field of view, principal ray incident angle CRA at the maximum image height, maximum field of view FOV, and the values ​​corresponding to each conditional expression in each embodiment.

[0133] Table 9-1 Table 9-2 In summary, the optical lens provided by the present invention uses ten lenses with specific optical power. Through specific surface shape matching and reasonable optical power distribution, it can improve the imaging quality of the optical lens, reduce aberrations, and enhance the imaging quality of the optical lens, giving the lens one or more advantages such as miniaturization, large field of view, large image plane, high pixel count, and high imaging quality.

[0134] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0135] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. An optical lens comprising ten lenses with optical power, characterized in that, It successively includes from the object side to the imaging surface along the optical axis: A first lens with negative optical power, whose object side is convex and whose image side is concave; A second lens with negative optical power, whose object side is convex and whose image side is concave; A third lens with negative optical power, whose object side is concave and whose image side is convex; A fourth lens with positive optical power, whose object side is convex and whose object side is convex; A fifth lens with optical power, whose object side is concave and whose image side is convex; A sixth lens with negative optical power, whose object side is convex and whose image side is concave; A seventh lens with positive optical power, whose object side is convex and whose image side is convex; An eighth lens with positive optical power, whose object side is convex and whose image side is convex; A ninth lens with negative optical power, whose object side is concave and whose image side is concave; A tenth lens with positive optical power, whose object side is convex and whose image side is convex.

2. The optical lens according to claim 1, characterized in that, The optical lens satisfies one or more of the following conditional expressions: The overall optical length TTL of the optical lens and the effective focal length f of the optical lens satisfy: 5.1 < TTL / f < 7.5; The overall optical length TTL of the optical lens and the true image height IH corresponding to the maximum field angle of the optical lens satisfy: 1.8 < TTL / IH < 2.

6.

3. The optical lens according to claim 1, characterized in that, The optical lens satisfies one or more of the following conditional expressions: The maximum field angle FOV of the optical lens and the f-number Fno of the optical lens satisfy: 50° < FOV / Fno < 70°; The true image height IH corresponding to the maximum field angle of the optical lens and the entrance pupil diameter EPD of the optical lens satisfy: 7.5 < IH / EPD < 9.

5.

4. The optical lens according to claim 1, characterized in that, The optical lens satisfies one or more of the following conditional expressions: The true image height IH corresponding to the maximum field angle of the optical lens and the effective focal length f of the optical lens satisfy: 2.7 < IH / f < 3.4; The true image height IH corresponding to the maximum field angle of the optical lens, the effective focal length f of the optical lens and the radian value θ of the maximum semi-field angle of the optical lens satisfy: 1 < (IH / 2) / (f×θ) < 1.

16.

5. The optical lens according to claim 1, characterized in that, The optical lens satisfies one or more of the following conditional expressions: The overall optical length TTL of the optical lens, the true image height IH corresponding to the maximum field angle of the optical lens and the maximum field angle FOV of the optical lens satisfy: 8 < 180°×TTL / (IH / 2) / (FOV / 2) < 12.5; The effective focal length f of the optical lens, the true image height IH corresponding to the maximum field angle of the optical lens and the maximum field angle FOV of the optical lens satisfy: 49° < f×FOV / IH < 57°.

6. The optical lens according to claim 1, characterized in that, The optical lens satisfies one or more of the following conditional expressions: the clear aperture semi-diameter d1 of the object side surface of the first lens, the true image height IH corresponding to the maximum field angle of the optical lens, and the maximum field angle FOV of the optical lens satisfy: 0.13 < d1 / (IH / 2) / tan(FOV / 2) < 0.38; the clear aperture semi-diameter d1 of the object side surface of the first lens and the true image height IH corresponding to the maximum field angle of the optical lens satisfy: 0.84 < d1 / (IH / 2) < 1.

4.

7. The optical lens according to claim 1, characterized in that, The optical lens satisfies one or more of the following conditional expressions: the focal length f1 of the first lens and the effective focal length f of the optical lens satisfy: -1.7 < f1 / f < -1.15; the focal length f2 of the second lens and the effective focal length f of the optical lens satisfy: -8.5 < f2 / f < -3.1; the focal length f3 of the third lens and the effective focal length f of the optical lens satisfy: -8.4 < f3 / f < -4.3; the focal length f4 of the fourth lens and the effective focal length f of the optical lens satisfy: 1.4 < f4 / f < 1.8; the focal length f5 of the fifth lens and the effective focal length f of the optical lens satisfy: -95 < f5 / f < -27 or 36 < f5 / f < 75; the focal length f6 of the sixth lens and the effective focal length f of the optical lens satisfy: -11 < f6 / f < -8; the focal length f7 of the seventh lens and the effective focal length f of the optical lens satisfy: 1.4 < f7 / f < 1.8; the focal length f8 of the eighth lens and the effective focal length f of the optical lens satisfy: 1.2 < f8 / f < 1.9; the focal length f9 of the ninth lens and the effective focal length f of the optical lens satisfy: -1 < f9 / f < -0.7; the focal length f10 of the tenth lens and the effective focal length f of the optical lens satisfy: 2 < f10 / f < 4.

8.

8. The optical lens according to claim 1, characterized in that, An aperture stop is provided between the fifth lens and the sixth lens or between the fourth lens and the fifth lens; the optical lens satisfies one or more of the following conditional expressions: the combined focal length fa of the lenses in front of the aperture stop and the effective focal length f of the optical lens satisfy: -二十一 < fa / f < -14 or 6.5 < fa / f < 140; the combined focal length fb of the lenses behind the aperture stop and the effective focal length f of the optical lens satisfy: 1.8 < fb / f < 2.6; the combined focal length fa of the lenses in front of the aperture stop and the combined focal length fb of the lenses behind the aperture stop satisfy: -9 < fa / fb < -6 or 3 < fa / fb < 60. It should be noted that there seems to be an incorrect expression "-二十一" in the translation of . It might be a typo and should probably be "-21".

9. The optical lens according to claim 1, characterized in that, The eighth lens and the ninth lens form a cemented lens group with a negative optical power; the optical lens satisfies one or more of the following conditional expressions: the combined focal length fglue1 of the eighth lens and the ninth lens and the effective focal length f of the optical lens satisfy: -2.8 < fglue1 / f < -1.8; the focal length f8 of the eighth lens and the focal length f9 of the ninth lens satisfy: -2.1 < f8 / f9 < -1.5; the combined focal length fglue1 of the eighth lens and the ninth lens and the focal length f10 of the tenth lens satisfy: -1 < fglue1 / f10 < -0.

5.

10. The optical lens according to claim 1, characterized in that, The optical lens satisfies one or more of the following conditional expressions: the smallest focal length fpositive min among all lenses with positive optical power and the largest focal length fnegative max among all lenses with negative optical power satisfy: -1.9 < fpositive min / fnegative max < -1.5; the focal length f1 of the first lens and the focal length f10 of the tenth lens satisfy: -0.7 < f1 / f10 < -0.3; the focal length f6 of the sixth lens and the focal length f7 of the seventh lens satisfy: -7 < f6 / f7 < -5; the focal length f7 of the seventh lens and the focal length f8 of the eighth lens satisfy: 0.9 < f7 / f8 < 1.2.

Images