Optical lens

Abstract

The utility model discloses an optical lens. The optical lens sequentially comprises a first lens, a second lens, a third lens and a fourth lens from an object side to an image side along an optical axis, the second lens has negative focal power; the third lens has negative focal power; the fourth lens has positive focal power; the fifth lens has positive focal power; the sixth lens has positive focal power; the seventh lens has positive focal power; the eighth lens has negative focal power; the ninth lens has positive focal power; the tenth lens has focal power; an eleventh lens with focal power; the twelfth lens has positive focal power; the effective focal length F3 of the third lens, the curvature radius R31 of the object side face of the third lens and the curvature radius R32 of the image side face of the third lens meet the condition that F3 / (R31 + R32) is larger than or equal to 0.5 and smaller than or equal to 3.1.

Description

Technical Field

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

[0002] Optical lenses are widely used in photography, videography, microscopes, telescopes, and video conferencing equipment. In particular, with the continuous advancement of internet technology, video conferencing, online teaching, live streaming, and other shooting fields are placing increasingly higher demands on optical lenses. Optical lens quality is measured by metrics such as resolution, contrast, and various aberrations. These metrics directly determine the quality of the image, the implementation of algorithms, and the ultimate performance of the equipment.

[0003] Existing optical lenses generally have the following technical problems: 1) Existing lenses are relatively large in size and length, and mostly use glass lenses, which cannot meet consumers' requirements for portability; 2) Existing lenses can only match small chips, which cannot achieve higher image resolution and a wider field of view; 3) Existing lenses generally have large distortion and cannot provide high-quality, true and accurate images and videos; 4) Existing lenses have severe purple fringing, which will destroy the details and color balance of the image, reduce the clarity and contrast of the picture, and thus affect the overall image quality. Utility Model Content

[0004] On one hand, 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 with negative optical power; a second lens with negative optical power; a third lens with negative optical power; a fourth lens with positive optical power; a fifth lens with positive optical power; a sixth lens with positive optical power; a seventh lens with positive optical power; an eighth lens with negative optical power; a ninth lens with positive optical power; a tenth lens with optical power; an eleventh lens with optical power; and a twelfth lens with positive optical power; an effective focal length F3 of the third lens, a curvature radius R31 of the object-side surface of the third lens, and a curvature radius R32 of the image-side surface of the third lens satisfy the following conditions: 0.5≤F3 / (R31+R32)≤3.1.

[0005] In one embodiment, the object-side surface of the first lens is convex and the image-side surface is concave; the object-side surface of the second lens is convex and the image-side surface is concave; and the object-side surface of the twelfth lens is convex and the image-side surface is concave.

[0006] In one embodiment, the object-side surface of the third lens is concave, and the image-side surface is convex; the object-side surface of the fourth lens is convex; the object-side surface of the fifth lens is convex, and the image-side surface is convex; the object-side surface and the image-side surface of the sixth lens are both convex; the object-side surface of the seventh lens is concave, and the image-side surface is convex; the object-side surface and the image-side surface of the eighth lens are both concave; the object-side surface and the image-side surface of the ninth lens are both convex; and the object-side surface of the eleventh lens is convex, and the image-side surface is concave.

[0007] In one embodiment, the effective focal length F1 of the first lens and the effective focal length F of the optical lens satisfy: -2.18≤F1 / F≤-1.7.

[0008] In one embodiment, the effective focal length F2 of the second lens and the effective focal length F1 of the first lens satisfy: 1.28≤F2 / F1≤3.45.

[0009] In one embodiment, the curvature radius R21 of the object-side surface of the second lens, the curvature radius R22 of the image-side surface of the second lens, and the effective focal length F2 of the second lens satisfy: -2.7≤(R21+R22) / F2≤-0.4.

[0010] In one embodiment, the combined effective focal length Fa of the eleventh lens and the twelfth lens and the effective focal length F2 of the second lens satisfy: -2.5≤Fa / F2≤-1.1.

[0011] 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 effective focal length F of the optical lens satisfy the following relationship: 5.0≤TTL / F≤5.5.

[0012] In one embodiment, the maximum effective optical semi-aperture DM1 of the object-side surface and the image-side surface of the first lens and the effective focal length F of the optical lens satisfy the following: 1.75≤DM1 / F≤2.35.

[0013] In one embodiment, the effective focal length F4 of the fourth lens and the effective focal length F5 of the fifth lens satisfy: 0.85≤F4 / F5≤1.65.

[0014] In one embodiment, the effective focal length F3 of the third lens, the effective focal length F4 of the fourth lens, the effective focal length F10 of the tenth lens, the effective focal length F11 of the eleventh lens, and the effective focal length F12 of the twelfth lens satisfy the following relationship: -0.15≤(F3+F4) / (F10+F11+F12)≤0.05.

[0015] In one embodiment, the Abbe number V6 of the sixth lens, the Abbe number V7 of the seventh lens, the Abbe number V9 of the ninth lens, and the effective focal length F of the optical lens satisfy the following conditions: 12.7≤V6 / F≤15.6, 12.5≤V7 / F≤19.5, and 12.7≤V9 / F≤15.6.

[0016] In one embodiment, the effective focal length F11 of the eleventh lens and the effective focal length F of the optical lens satisfy: 4.6≤|F11 / F|≤19.

[0017] In one embodiment, the effective focal length F12 of the twelfth lens and the effective focal length F of the optical lens satisfy: 2.0≤F12 / F≤7.31.

[0018] In one embodiment, the optical lens satisfies at least one of the following: -2.0≤Fa / F2≤-1.2, -2.15≤F1 / F≤-2.0, 1.5≤F2 / F1≤2.55, -2.4≤(R21+R22) / F2≤-0.5, 0.85≤F3 / (R31+R32)≤2.85, 5.0≤TTL / F≤5.3, 1.85≤DM1 / F≤2 .05, 1.1≤F4 / F5≤1.5, -0.1≤(F3+F4) / (F10+F11+F12)≤0.05, 14.5≤V6 / F≤14.9, 14.5≤V7 / F≤16.4, 14.5≤V9 / F≤14.9, 4.7≤|F11 / F|≤18.8, 2.5≤F12 / F≤6.6, where Fa is the eleventh and twelfth lens elements. The combined effective focal length of the lenses, F1 is the effective focal length of the first lens, F2 is the effective focal length of the second lens, F3 is the effective focal length of the third lens, F4 is the effective focal length of the fourth lens, F5 is the effective focal length of the fifth lens, F10 is the effective focal length of the tenth lens, F11 is the effective focal length of the eleventh lens, F12 is the effective focal length of the twelfth lens, TTL is the distance from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis, DM1 is the maximum effective optical semi-aperture of the object side surface and the image side surface of the first lens, R21 is the curvature radius of the object side surface of the second lens, R22 is the curvature radius of the image side surface of the second lens, R31 is the curvature radius of the object side surface of the third lens, R32 is the curvature radius of the image side surface of the third lens, V6 is the Abbe number of the sixth lens, V7 is the Abbe number of the seventh lens, and V9 is the Abbe number of the ninth lens.

[0019] Another aspect of the present application provides an electronic device comprising the optical lens provided by the present application and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

[0020] The optical lens provided in the present application uses twelve lenses. By reasonably setting the optical focal length of each lens, and reasonably setting the effective focal length of the third lens and the curvature radius of its object side and image side, the trend of light is effectively controlled, the light transition is smooth, the generation of various aberrations is effectively reduced, the imaging quality of the optical lens is improved, and the resolution of the optical lens can reach 12MP. The optical lens provided in the present application has at least one beneficial effect, namely, glass-plastic hybrid, large target area, high resolution, low distortion, good color reproduction, and no out-of-focus in the temperature range of -30°C to 70°C. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0022] Figure 1A Schematic diagram of the structure of an optical lens according to Example 1 of the present application;

[0023] Figure 1B : is a distortion diagram of the optical lens according to Example 1 of the present application;

[0024] Figure 2A Schematic diagram of the structure of an optical lens according to Example 2 of the present application;

[0025] Figure 2B : is a distortion diagram of the optical lens according to Example 2 of the present application;

[0026] Figure 3A Schematic diagram of the structure of an optical lens according to Example 3 of the present application;

[0027] Figure 3B : is a distortion diagram of the optical lens according to Example 3 of the present application;

[0028] Figure 4A Schematic diagram of the structure of an optical lens according to Example 4 of the present application;

[0029] Figure 4B This is a distortion diagram of the optical lens according to Example 4 of the present application. DETAILED DESCRIPTION

[0030] To facilitate understanding of the present application, a more comprehensive description of the present application will be provided below with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely 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.

[0031] It should be noted that in this specification, the terms "first," "second," "third," etc., are used solely to distinguish one feature from another and do not limit the features. Thus, the first lens discussed below could also be referred to as the second lens or the third lens without departing from the teachings of this application.

[0032] In the drawings, the thickness, size, and shape of the lenses are slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical and aspherical surfaces shown in the drawings are provided by way of example. That is, the shapes of the spherical and aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustration only and are not drawn strictly to scale.

[0033] In this article, the paraxial region refers to the area near the optical axis. If a lens surface is convex and the location of the convex surface is undefined, it means that the lens surface is convex at least in the paraxial region. If a lens surface is concave and the location of the concave surface is undefined, 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 image side is called the image-side surface of the lens.

[0034] 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 preclude 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 list of 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.

[0035] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art to which this application belongs. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and will not be interpreted in an idealized or overly formal sense unless expressly defined as such herein.

[0036] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this 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.

[0037] The features, principles and other aspects of the present application are described in detail below.

[0038] In an exemplary embodiment, the optical lens provided herein may include, for example, twelve lenses having optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a tenth lens, an eleventh lens, and a twelfth lens. The twelve lenses are arranged in order from the object side to the image side along the optical axis.

[0039] In an exemplary embodiment, the optical lens may further include a photosensitive element disposed on the image side of the twelfth lens. Optionally, the photosensitive element disposed on the image side of the twelfth lens may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS).

[0040] In an exemplary embodiment, the optical lens may further include an aperture for limiting the light beam to further improve the imaging quality of the optical lens. For example, the aperture may be positioned between the fifth and sixth lenses. The aperture helps to focus the light entering the optical lens, effectively controlling the amount of light passing through. It also reduces the overall length of the optical lens, facilitating miniaturization while improving the imaging quality of the optical lens. However, it should be noted that the aperture position disclosed herein is merely illustrative and not restrictive; in alternative embodiments, the aperture may be positioned elsewhere as needed.

[0041] In an exemplary embodiment, the first lens may have negative optical power, with a convex object-side surface and a concave image-side surface. This configuration of the first lens can focus incident light with a large field of view as much as possible into the optical lens, effectively expanding the field of view to a maximum FOV of ≥86°.

[0042] In an exemplary embodiment, the second lens may have negative optical power, with a convex object-side surface and a concave image-side surface. This configuration of the second lens is beneficial for correcting distortion and astigmatism of the optical lens.

[0043] In an exemplary embodiment, the third lens has negative optical power, a concave object-side surface, and a convex image-side surface. This configuration of the third lens is beneficial for correcting spherical aberration and astigmatism, thereby improving the resolution of the lens.

[0044] In an exemplary embodiment, the fourth lens element may have positive power, a convex object-side surface, and either a convex or concave image-side surface. This fourth lens configuration, combined with the positive power and lens shape of the fifth lens element, facilitates optimal control of light deflection angles, resulting in a smooth optical transition, effectively reducing tolerance sensitivity, and improving lens production yield.

[0045] In an exemplary embodiment, the fifth lens element may have positive optical power, with both its object-side and image-side surfaces being convex. This configuration, combined with the positive optical power of the fourth lens element, facilitates optimal control of light deflection angles, resulting in a smooth optical transition, effectively reducing tolerance sensitivity and improving lens production yield.

[0046] In an exemplary embodiment, the sixth lens element may have positive optical power, with both its object-side and image-side surfaces being convex. The shape and material combination of the sixth lens element can effectively reduce chromatic aberration, improve purple fringing, and balance the high and low temperature performance of the optical lens.

[0047] In an exemplary embodiment, the seventh lens element may have positive optical power, with a concave object-side surface and a convex image-side surface. This seventh lens element configuration, combined with the optical power and shape of the eighth and ninth lenses to form a cemented triplet lens system, effectively reduces spherical aberration and improves purple fringing. It also effectively reduces lens tolerance sensitivity, improving lens production yield.

[0048] In an exemplary embodiment, the eighth lens element may have negative optical power, with both its object-side and image-side surfaces concave. This arrangement, combined with the optical power and shape of the seventh and ninth lenses to form a cemented triplet, effectively reduces spherical aberration and improves purple fringing. It also effectively reduces lens tolerance sensitivity, improving lens production yield.

[0049] In an exemplary embodiment, the ninth lens element may have positive optical power, with both its object-side and image-side surfaces convex. This configuration, combined with the optical power and shape of the seventh and ninth lenses to form a cemented triplet, effectively reduces spherical aberration and improves purple fringing. It also effectively reduces lens tolerance sensitivity, improving lens production yield.

[0050] In an exemplary embodiment, the tenth lens element can have positive or negative power, with a convex or concave object-side surface and a convex or concave image-side surface. By properly configuring the tenth lens element's power and lens shape, and using an aspheric lens surface, the trajectory of light can be effectively controlled and elevated to effectively match the chip size and CRA (Chief Ray Angle), facilitating the realization of a large target area while effectively balancing high and low temperature performance.

[0051] In exemplary embodiments, the eleventh lens element can have positive or negative optical power, with a convex object-side surface and a concave image-side surface. By properly matching the optical power of the eleventh lens element with the lens shape and using an aspherical lens surface, optical distortion and astigmatism can be effectively corrected, while also effectively matching the chip size and CRA, thereby facilitating the realization of a large target area.

[0052] In an exemplary embodiment, the twelfth lens element may have positive optical power, with a convex object-side surface and a concave image-side surface. By properly configuring the optical power and lens shape of the twelfth lens element and using an aspherical lens surface, the trajectory of light can be effectively controlled and elevated to effectively match the chip size and CRA, facilitating the realization of a large target area. This also effectively corrects optical distortion and improves illumination.

[0053] In an exemplary embodiment, the optical lens according to the present application can satisfy the following conditions: -2.5 ≤ Fa / F2 ≤ -1.1, where Fa is the combined effective focal length of the eleventh and twelfth lenses, and F2 is the effective focal length of the second lens. More specifically, Fa and F2 can further satisfy -2.0 ≤ Fa / F2 ≤ -1.2. By satisfying -2.5 ≤ Fa / F2 ≤ -1.1 and rationally controlling the ratio of the combined effective focal lengths of the eleventh to twelfth lenses to the effective focal length of the second lens, the distortion of the optical lens can be effectively reduced to a maximum optical distortion of ≤ |-3.6%|, thereby reducing the degree of image distortion and ensuring image fidelity. Furthermore, the direction of light entering and exiting the optical system can be rationally controlled to effectively match the chip size and CRA, facilitating the realization of a large target surface and improving illumination.

[0054] In an exemplary embodiment, the optical lens according to the present application can satisfy the following conditions: -2.18 ≤ F1 / F ≤ -1.7, where F1 is the effective focal length of the first lens element and F is the effective focal length of the optical lens element. More specifically, F1 and F can further satisfy -2.15 ≤ F1 / F ≤ -2.0. By properly controlling the effective focal length of the first lens element, the optical lens element can be optimized to allow wide-angle light to enter the lens, effectively expanding the field of view (FOV) of the optical lens element to meet the requirement of FOV ≥ 86°.

[0055] In an exemplary embodiment, the optical lens according to the present application can satisfy the following conditions: 1.28 ≤ F2 / F1 ≤ 3.45, where F2 is the effective focal length of the second lens element and F1 is the effective focal length of the first lens element. More specifically, F2 and F1 can further satisfy 1.5 ≤ F2 / F1 ≤ 2.55. This 1.28 ≤ F2 / F1 ≤ 3.45 requirement, through proper control of the effective focal length ratio of the second lens element to the first lens element, facilitates a smooth transition of wide-angle light rays to the rear optical system, effectively balances astigmatism, and helps correct optical distortion, minimizing maximum optical distortion to ≤ |-3.6%|.

[0056] In an exemplary embodiment, the optical lens according to the present application may satisfy the following: -2.7≤(R21+R22) / F2≤-0.4, where R21 is the radius of curvature of the object-side surface of the second lens, R22 is the radius of curvature of the image-side surface of the second lens, and F2 is the effective focal length of the second lens. More specifically, R21, R22, and F2 may further satisfy -2.4≤(R21+R22) / F2≤-0.5. Satisfying -2.7≤(R21+R22) / F2≤-0.4 and rationally controlling the ratio of the radius of curvature of the object-side surface and the image-side surface of the second lens to the effective focal length of the second lens can help reduce the angle of light deflection, achieve a smooth transition of light, effectively reduce the generation of astigmatism, and improve the resolution of the optical lens.

[0057] In an exemplary embodiment, the optical lens according to the present application may satisfy: 0.5≤F3 / (R31+R32)≤3.1. Wherein, F3 is the effective focal length of the third lens, R31 is the radius of curvature of the object side surface of the third lens, and R32 is the radius of curvature of the image side surface of the third lens. More specifically, F3, R31 and R32 may further satisfy 0.85≤F3 / (R31+R32)≤2.85. By satisfying 0.5≤F3 / (R31+R32)≤3.1, by reasonably setting the effective focal length of the third lens and the radius of curvature of its object side surface and image side surface, the trend of light can be effectively controlled, the light can be smoothly transitioned, the generation of various aberrations can be effectively reduced, the imaging quality of the optical lens can be improved, and the resolution of the optical lens can reach 12MP.

[0058] In an exemplary embodiment, the optical lens according to the present application may satisfy the following conditions: 5.0 ≤ TTL / F ≤ 5.5. Here, TTL is the distance on the optical axis from the object-side surface of the first lens to the imaging surface of the optical lens, and F is the effective focal length of the optical lens. More specifically, TTL and F may further satisfy 5.0 ≤ TTL / F ≤ 5.3. By satisfying 5.0 ≤ TTL / F ≤ 5.5, the total length of the optical lens can be reasonably controlled while maintaining a constant focal length by controlling the ratio of the total length of the optical lens to the effective focal length of the optical lens, thereby reducing the total length of the optical lens and facilitating miniaturization.

[0059] In an exemplary embodiment, the optical lens according to the present application may satisfy the following conditions: 1.75 ≤ DM1 / F ≤ 2.35, where DM1 is the maximum effective optical semi-aperture of the object-side and image-side surfaces of the first lens element, and F is the effective focal length of the optical lens element. More specifically, DM1 and F may further satisfy 1.85 ≤ DM1 / F ≤ 2.05. Satisfying 1.75 ≤ DM1 / F ≤ 2.35, by controlling the ratio of the maximum effective optical semi-aperture of the object-side and image-side surfaces of the first lens element to the effective focal length of the optical lens element, and by rationally controlling the maximum effective optical semi-aperture of the object-side and image-side surfaces of the first lens element while maintaining a constant focal length, facilitates longitudinal miniaturization of the lens element.

[0060] In an exemplary embodiment, the optical lens according to the present application can satisfy the following conditions: 0.85 ≤ F4 / F5 ≤ 1.65, where F4 is the effective focal length of the fourth lens element and F5 is the effective focal length of the fifth lens element. More specifically, F4 and F5 can further satisfy 1.1 ≤ F4 / F5 ≤ 1.5. By properly allocating the effective focal length ratio of the fourth and fifth lenses, the optical lens effectively reduces the angle of light deflection, resulting in a smoother light transition, lowering the optical lens's sensitivity to tolerances and improving the lens's production yield.

[0061] In an exemplary embodiment, the optical lens according to the present application may satisfy the following condition: -0.15 ≤ (F3 + F4) / (F10 + F11 + F12) ≤ 0.05, where F3 is the effective focal length of the third lens element, F4 is the effective focal length of the fourth lens element, F10 is the effective focal length of the tenth lens element, F11 is the effective focal length of the eleventh lens element, and F12 is the effective focal length of the twelfth lens element. The third, fourth, tenth, eleventh, and twelfth lenses may be made of plastic and satisfy the following condition: -0.15 ≤ (F3 + F4) / (F10 + F11 + F12) ≤ 0.05. By properly allocating the effective focal lengths of the plastic lenses before and after the aperture, field curvature correction is facilitated, peripheral resolution is improved, and adverse effects of high and low temperatures are compensated, achieving an athermal lens. More specifically, F3, F4, F10, F11, and F12 may further satisfy -0.1≤(F3+F4) / (F10+F11+F12)≤0.05, which is beneficial for better achieving high resolution and athermalization.

[0062] In an exemplary embodiment, the optical lens according to the present application may satisfy the following conditions: 12.7 ≤ V6 / F ≤ 15.6, 12.5 ≤ V7 / F ≤ 19.5, and 12.7 ≤ V9 / F ≤ 15.6, where V6 is the Abbe number of the sixth lens element, V7 is the Abbe number of the seventh lens element, V9 is the Abbe number of the ninth lens element, and F is the effective focal length of the optical lens. By satisfying the conditions 12.7 ≤ V6 / F ≤ 15.6, 12.5 ≤ V7 / F ≤ 19.5, and 12.7 ≤ V9 / F ≤ 15.6, the sixth, seventh, and ninth lenses may be made of glass, and the Abbe numbers of the sixth, seventh, and ninth lenses may be appropriately set, thereby effectively reducing chromatic aberration of the optical lens and providing a high degree of color reproduction. More specifically, V6, V7, V9, and F may further satisfy 14.5≤V6 / F≤14.9, 14.5≤V7 / F≤16.4, and 14.5≤V9 / F≤14.9, which is conducive to better achieving low color difference.

[0063] In an exemplary embodiment, the optical lens according to the present application can satisfy the following conditions: 4.6 ≤ |F11 / F| ≤ 19, where F11 is the effective focal length of the eleventh lens element and F is the effective focal length of the optical lens element. More specifically, F11 and F can further satisfy 4.7 ≤ |F11 / F| ≤ 18.8. By properly setting the effective focal length ratio of the eleventh lens element to the optical lens element, optical distortion can be effectively corrected, reducing the maximum optical distortion to ≤ |-3.6%|. This also balances astigmatism, improving the lens's imaging quality. Effectively matching chip size and CRA facilitates achieving a large image surface.

[0064] In an exemplary embodiment, the optical lens according to the present application can satisfy the following conditions: 2.0 ≤ F12 / F ≤ 7.31, where F12 is the effective focal length of the twelfth lens element and F is the effective focal length of the optical lens element. More specifically, F12 and F can further satisfy 2.5 ≤ F12 / F ≤ 6.6. By properly setting the ratio of the effective focal length of the twelfth lens element to the effective focal length of the optical lens element, the light path can be effectively controlled and elevated to effectively match the chip size and CRA, thereby facilitating the realization of a large target area. This also effectively corrects distortion and improves illumination.

[0065] In an exemplary embodiment, as needed, the optical lens of the present application may further include a filter and / or protective glass disposed between the twelfth lens and the imaging surface. The filter can filter light with different wavelengths, and the protective glass can prevent damage to the image-side element (e.g., chip) of the optical lens.

[0066] In an exemplary embodiment, each lens of the optical lens of the present application may be a spherical lens or an aspherical lens. As needed, the present application does not specifically limit the specific number of spherical lenses and aspherical lenses. When focusing on imaging quality, the number of aspherical lenses can be increased, or even all lenses can use aspherical lenses. The characteristic of an 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, an aspherical lens has a better curvature radius characteristic and has the advantages of improving distortion aberration and improving astigmatism aberration. After using an aspherical lens, the aberrations that occur during imaging can be eliminated as much as possible, thereby improving the imaging quality of the lens. Exemplarily, the second lens, the third lens, the fourth lens, the tenth lens, the eleventh lens and the twelfth lens are all aspherical lenses, and the first lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens and the ninth lens are all spherical lenses.

[0067] In an exemplary embodiment, the optical lens of the present application may be made of a glass-plastic hybrid material. For example, as needed, a glass-plastic hybrid structure of 6 glass lenses and 6 plastic lenses may be used. For example, the first lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens and the ninth lens may be made of glass, and the second lens, the third lens, the fourth lens, the tenth lens, the eleventh lens and the twelfth lens may be made of plastic. The first lens is made of glass, which is beneficial for preventing scratches and oil stains. The use of a glass-plastic hybrid structure in the present application is beneficial for reducing the cost of the optical system, and is also beneficial for balancing the high and low temperature performance of the optical lens, achieving non-defocus in the range of -30°C to +70°C while maintaining high imaging quality; at the same time, the use of glass lenses is beneficial for correcting the chromatic aberration of the optical system and improving the color reproduction of the lens. Furthermore, the optical lens of the present application may also use plastic aspherical lenses, which is beneficial for improving imaging quality while reducing costs.

[0068] Optionally, in an exemplary embodiment, each lens in the optical lens of the present application can be made of glass. Compared to plastic, glass lenses have a higher transmittance to visible light, less light energy loss, and better imaging transparency. Glass is also less prone to aging and deformation, and has a longer service life.

[0069] The optical lens according to the above-mentioned embodiment of the present application can use multiple lenses, for example, the twelve lenses mentioned above. By rationally allocating optical parameters such as the focal length, surface shape, center thickness of each lens, and on-axis spacing between lenses, it is possible to achieve at least one of the following beneficial effects: miniaturization, low cost, glass-plastic hybrid, large target surface (1 / 1.55" large target surface), high resolution (12M resolution), low distortion, good color reproduction, and no out-of-focus in the temperature range of -30°C to 70°C.

[0070] However, those skilled in the art will appreciate that the number of lenses comprising the lens may be varied to achieve the various results and advantages described herein without departing from the claimed technical solutions. For example, while twelve lenses are described in the embodiments, the optical lens is not limited to twelve lenses. If desired, the optical lens may also include other numbers of lenses. Specific embodiments of optical lenses applicable to the above-described embodiments are further described below with reference to the accompanying drawings.

[0071] Example 1

[0072] The following reference Figure 1A An optical lens according to Example 1 of the present application is described. Figure 1A A schematic structural diagram of an optical lens according to Example 1 of the present application is shown.

[0073] like Figure 1AAs shown, the optical lens includes, from the object side to the image side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a ninth lens L9, a tenth lens L10, an eleventh lens L11 and a twelfth lens L12.

[0074] The first lens L1 has negative refractive power, its object-side surface S1 is convex, and its image-side surface S2 is concave.

[0075] The second lens L2 has negative refractive power, its object-side surface S3 is convex, and its image-side surface S4 is concave.

[0076] The third lens L3 has negative refractive power, its object-side surface S5 is concave, and its image-side surface S6 is convex.

[0077] The fourth lens L4 has positive refractive power, its object-side surface S7 is convex, and its image-side surface S8 is concave.

[0078] The fifth lens L5 has positive refractive power, and its object-side surface S9 and image-side surface S10 are convex.

[0079] The sixth lens L6 has positive refractive power, and its object-side surface S12 and image-side surface S13 are convex.

[0080] The seventh lens L7 has positive refractive power, its object-side surface S14 is concave, and its image-side surface S15 is convex.

[0081] The eighth lens L8 has negative refractive power, and its object-side surface S15 and image-side surface S16 are concave.

[0082] The ninth lens L9 has positive refractive power, and its object-side surface S16 and image-side surface S17 are convex.

[0083] The tenth lens L10 has negative refractive power, and its object-side surface S18 is concave, and its image-side surface S19 is convex.

[0084] The eleventh lens L11 has negative refractive power, and its object-side surface S20 is convex, and its image-side surface S21 is concave.

[0085] The twelfth lens L12 has positive refractive power, an object-side surface S22 thereof is convex, and an image-side surface S23 thereof is concave.

[0086] The seventh lens L7, the eighth lens L8 and the ninth lens L9 may be cemented together to form a triplet lens group.

[0087] The optical lens may further include an aperture STOP, which may be disposed between the fifth lens element L5 and the sixth lens element L6. Optionally, the optical lens may further include a filter (not shown) having object-side and image-side surfaces and / or a protective glass CG having object-side and image-side surfaces S24 and S25. The filter may be used to correct for color deviation, and the protective glass CG may be used to protect the image sensor chip located at the imaging surface IMA. Light from the object sequentially passes through each surface S1 to S25 and is ultimately imaged on the imaging surface IMA.

[0088] Table 1 shows the curvature radius, thickness / distance, refractive index and Abbe number of each lens of the optical lens of Example 1, wherein the units of the curvature radius and thickness / distance are all millimeters (mm).

[0089] Table 1

[0090]

[0091]

[0092] In Example 1, the object-side surface and the image-side surface of the second lens element, the third lens element, the fourth lens element, the tenth lens element, the eleventh lens element, and the twelfth lens element are all aspherical surfaces. The surface shape of the aspherical lens can be defined by, but is not limited to, the following aspherical surface formula:

[0093]

[0094] Where x is the distance vector from the vertex of the aspheric surface at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the correction coefficient for the i-th order of the aspheric surface. Table 2 below lists the conic coefficient k and the higher-order coefficients A4, A6, A8, A10, A12, A14, and A16 that can be used for each aspheric mirror surface S3 to S8 and S18 to S23 in Example 1.

[0095] Table 2

[0096]

[0097]

[0098] The maximum field of view (FOV) of the optical lens provided in Example 1 is 87.77°. Figure 1B is a distortion diagram of the optical lens of Example 1, according to Figure 1B It can be seen that the maximum optical distortion of the optical lens provided in Example 1 is -3.45%, which can achieve good imaging quality.

[0099] Example 2

[0100] The following reference Figure 2A An optical lens according to Example 2 of the present application is described. Figure 2A A schematic structural diagram of an optical lens according to Example 2 of the present application is shown.

[0101] like Figure 2A As shown, the optical lens includes, from the object side to the image side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a ninth lens L9, a tenth lens L10, an eleventh lens L11 and a twelfth lens L12.

[0102] The first lens L1 has negative refractive power, its object-side surface S1 is convex, and its image-side surface S2 is concave.

[0103] The second lens L2 has negative refractive power, its object-side surface S3 is convex, and its image-side surface S4 is concave.

[0104] The third lens L3 has negative refractive power, its object-side surface S5 is concave, and its image-side surface S6 is convex.

[0105] The fourth lens L4 has positive refractive power, its object-side surface S7 is convex, and its image-side surface S8 is concave.

[0106] The fifth lens L5 has positive refractive power, and its object-side surface S9 and image-side surface S10 are convex.

[0107] The sixth lens L6 has positive refractive power, and its object-side surface S12 and image-side surface S13 are convex.

[0108] The seventh lens L7 has positive refractive power, its object-side surface S14 is concave, and its image-side surface S15 is convex.

[0109] The eighth lens L8 has negative refractive power, and its object-side surface S15 and image-side surface S16 are concave.

[0110] The ninth lens L9 has positive refractive power, and its object-side surface S16 and image-side surface S17 are convex.

[0111] The tenth lens L10 has negative refractive power, and its object-side surface S18 is concave, and its image-side surface S19 is convex.

[0112] The eleventh lens L11 has positive refractive power, an object-side surface S20 thereof is convex, and an image-side surface S21 thereof is concave.

[0113] The twelfth lens L12 has positive refractive power, an object-side surface S22 thereof is convex, and an image-side surface S23 thereof is concave.

[0114] The seventh lens L7, the eighth lens L8 and the ninth lens L9 may be cemented together to form a triplet lens group.

[0115] The optical lens may further include an aperture STOP, which may be disposed between the fifth lens element L5 and the sixth lens element L6. Optionally, the optical lens may further include a filter (not shown) having object-side and image-side surfaces and / or a protective glass CG having object-side and image-side surfaces S24 and S25. The filter may be used to correct for color deviation, and the protective glass CG may be used to protect the image sensor chip located at the imaging surface IMA. Light from the object sequentially passes through each surface S1 to S25 and is ultimately imaged on the imaging surface IMA.

[0116] Table 3 shows the radius of curvature, thickness / distance, refractive index, and Abbe number of each lens of the optical lens of Example 2, wherein the units of the radius of curvature and thickness / distance are all millimeters (mm). Table 4 shows the conic coefficient and high-order coefficient of each aspheric mirror surface that can be used in Example 2, wherein the surface shape of each aspheric surface can be defined by formula (1) given in Example 1 above.

[0117] Table 3

[0118]

[0119] Table 4

[0120]

[0121]

[0122] The maximum field of view (FOV) of the optical lens provided in Example 2 is 87.27°. Figure 2B is a distortion diagram of the optical lens of Example 2, according to Figure 2B It can be seen that the maximum optical distortion of the optical lens provided in Example 2 is -3.56%, which can achieve good imaging quality.

[0123] Example 3

[0124] The following reference Figure 3A An optical lens according to Example 3 of the present application is described. Figure 3A A schematic structural diagram of an optical lens according to Example 3 of the present application is shown.

[0125] like Figure 3A As shown, the optical lens includes, from the object side to the image side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a ninth lens L9, a tenth lens L10, an eleventh lens L11 and a twelfth lens L12.

[0126] The first lens L1 has negative refractive power, its object-side surface S1 is convex, and its image-side surface S2 is concave.

[0127] The second lens L2 has negative refractive power, its object-side surface S3 is convex, and its image-side surface S4 is concave.

[0128] The third lens L3 has negative refractive power, its object-side surface S5 is concave, and its image-side surface S6 is convex.

[0129] The fourth lens L4 has positive refractive power, and its object-side surface S7 and image-side surface S8 are convex.

[0130] The fifth lens L5 has positive refractive power, and its object-side surface S9 and image-side surface S10 are convex.

[0131] The sixth lens L6 has positive refractive power, and its object-side surface S12 and image-side surface S13 are convex.

[0132] The seventh lens L7 has positive refractive power, its object-side surface S14 is concave, and its image-side surface S15 is convex.

[0133] The eighth lens L8 has negative refractive power, and its object-side surface S15 and image-side surface S16 are concave.

[0134] The ninth lens L9 has positive refractive power, and its object-side surface S16 and image-side surface S17 are convex.

[0135] The tenth lens L10 has positive refractive power, and its object-side surface S18 is convex, and its image-side surface S19 is concave.

[0136] The eleventh lens L11 has negative refractive power, and its object-side surface S20 is convex, and its image-side surface S21 is concave.

[0137] The twelfth lens L12 has positive refractive power, an object-side surface S22 thereof is convex, and an image-side surface S23 thereof is concave.

[0138] The seventh lens L7, the eighth lens L8 and the ninth lens L9 may be cemented together to form a triplet lens group.

[0139] The optical lens may further include an aperture STOP, which may be disposed between the fifth lens element L5 and the sixth lens element L6. Optionally, the optical lens may further include a filter (not shown) having object-side and image-side surfaces and / or a protective glass CG having object-side and image-side surfaces S24 and S25. The filter may be used to correct for color deviation, and the protective glass CG may be used to protect the image sensor chip located at the imaging surface IMA. Light from the object sequentially passes through each surface S1 to S25 and is ultimately imaged on the imaging surface IMA.

[0140] Table 5 shows the radius of curvature, thickness / distance, refractive index, and Abbe number of each lens of the optical lens of Example 3, wherein the units of the radius of curvature and thickness / distance are all millimeters (mm). Table 6 shows the conic coefficients and higher-order coefficients that can be used for each aspheric mirror surface in Example 3, wherein the surface shape of each aspheric surface can be defined by formula (1) given in Example 1 above.

[0141] Table 5

[0142]

[0143]

[0144] Table 6

[0145] Face number k A4 A6 A8 A10 A12 A14 A16 S3 4.54E+00 5.85E-03 -4.33E-04 2.83E-05 -1.62E-06 7.63E-08 -2.45E-09 3.92E-11 S4 7.06E-01 6.86E-03 -4.36E-04 9.59E-06 8.36E-07 -5.00E-08 -1.93E-10 3.49E-12 S5 -5.39E+00 -3.25E-03 1.31E-04 6.42E-06 -2.08E-06 1.40E-07 -4.83E-09 8.83E-11 S6 -4.05E+01 -2.79E-03 2.86E-04 -2.36E-05 4.84E-07 4.34E-08 -9.51E-10 -3.81E-11 S7 -9.39E+00 -1.38E-04 1.32E-04 -1.60E-05 5.97E-07 1.22E-08 2.44E-09 -1.62E-10 S8 1.89E+01 8.68E-04 -3.34E-05 3.78E-06 -4.16E-07 5.92E-09 4.27E-09 -1.69E-10 S18 -6.60E+01 2.48E-03 -2.93E-04 1.67E-05 -2.78E-07 -3.75E-08 2.42E-09 -3.95E-11 S19 3.00E+01 1.34E-03 -3.17E-04 2.55E-05 -1.11E-06 1.41E-08 4.29E-10 -8.45E-12 S20 -5.53E+00 1.75E-03 -3.68E-04 2.60E-05 -1.57E-06 6.68E-08 -1.88E-09 2.33E-11 S21 -5.65E+00 3.97E-04 -2.51E-04 1.73E-05 -1.18E-06 5.12E-08 -1.25E-09 1.39E-11 S22 -4.17E+00 -1.09E-03 -2.42E-04 1.26E-05 -5.13E-07 1.50E-08 -7.80E-11 -2.19E-12 S23 -7.81E+00 -2.03E-03 -7.78E-05 5.55E-06 -2.90E-07 1.79E-08 -6.17E-10 8.02E-12

[0146] The maximum field of view (FOV) of the optical lens provided in Example 3 is 86.82°. Figure 3B is a distortion diagram of the optical lens of Example 3, according to Figure 3B It can be seen that the maximum optical distortion of the optical lens provided in Example 3 is -2.40%, which can achieve good imaging quality.

[0147] Example 4

[0148] The following reference Figure 4A An optical lens according to Example 4 of the present application is described. Figure 4A A schematic structural diagram of an optical lens according to Example 4 of the present application is shown.

[0149] like Figure 4A As shown, the optical lens includes, from the object side to the image side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a ninth lens L9, a tenth lens L10, an eleventh lens L11 and a twelfth lens L12.

[0150] The first lens L1 has negative refractive power, its object-side surface S1 is convex, and its image-side surface S2 is concave.

[0151] The second lens L2 has negative refractive power, its object-side surface S3 is convex, and its image-side surface S4 is concave.

[0152] The third lens L3 has negative refractive power, its object-side surface S5 is concave, and its image-side surface S6 is convex.

[0153] The fourth lens L4 has positive refractive power, and its object-side surface S7 and image-side surface S8 are convex.

[0154] The fifth lens L5 has positive refractive power, and its object-side surface S9 and image-side surface S10 are convex.

[0155] The sixth lens L6 has positive refractive power, and its object-side surface S12 and image-side surface S13 are convex.

[0156] The seventh lens L7 has positive refractive power, its object-side surface S14 is concave, and its image-side surface S15 is convex.

[0157] The eighth lens L8 has negative refractive power, and its object-side surface S15 and image-side surface S16 are concave.

[0158] The ninth lens L9 has positive refractive power, and its object-side surface S16 and image-side surface S17 are convex.

[0159] The tenth lens L10 has positive refractive power, and its object-side surface S18 is concave, and its image-side surface S19 is convex.

[0160] The eleventh lens L11 has negative refractive power, and its object-side surface S20 is convex, and its image-side surface S21 is concave.

[0161] The twelfth lens L12 has positive refractive power, an object-side surface S22 thereof is convex, and an image-side surface S23 thereof is concave.

[0162] The seventh lens L7, the eighth lens L8 and the ninth lens L9 may be cemented together to form a triplet lens group.

[0163] The optical lens may further include an aperture STOP, which may be disposed between the fifth lens element L5 and the sixth lens element L6. Optionally, the optical lens may further include a filter (not shown) having object-side and image-side surfaces and / or a protective glass CG having object-side and image-side surfaces S24 and S25. The filter may be used to correct for color deviation, and the protective glass CG may be used to protect the image sensor chip located at the imaging surface IMA. Light from the object sequentially passes through each surface S1 to S25 and is ultimately imaged on the imaging surface IMA.

[0164] Table 7 shows the radius of curvature, thickness / distance, refractive index, and Abbe number of each lens of the optical lens of Example 4, wherein the units of the radius of curvature and thickness / distance are all millimeters (mm). Table 8 shows the conic coefficient and high-order coefficient of each aspheric mirror surface that can be used in Example 4, wherein the surface shape of each aspheric surface can be defined by formula (1) given in Example 1 above.

[0165] Table 7

[0166]

[0167]

[0168] Table 8

[0169] Face number k A4 A6 A8 A10 A12 A14 A16 S3 0.00E+00 5.92E-03 -4.31E-04 2.92E-05 -1.66E-06 8.12E-08 -2.36E-09 3.16E-11 S4 -1.30E+00 7.24E-03 -4.57E-04 1.48E-05 4.03E-07 -5.25E-08 7.22E-09 -3.31E-10 S5 -4.24E+00 -3.65E-03 8.53E-05 1.60E-05 -1.80E-06 5.44E-08 -1.34E-09 1.29E-10 S6 -1.71E+01 -3.16E-03 3.61E-04 -2.15E-05 2.53E-07 3.65E-08 -1.34E-09 4.78E-11 S7 -1.18E+01 -9.88E-05 1.65E-04 -1.59E-05 4.68E-07 -9.05E-10 2.83E-09 -1.15E-10 S8 3.00E+01 4.81E-04 1.63E-06 2.53E-06 -4.59E-07 3.20E-08 -5.38E-11 3.07E-11 S18 5.97E+00 1.11E-03 -3.10E-04 1.67E-05 -2.48E-07 -3.63E-08 2.29E-09 -4.27E-11 S19 2.96E+01 1.30E-03 -3.38E-04 2.62E-05 -1.04E-06 1.49E-08 2.61E-10 -9.79E-12 S20 -6.17E+00 1.06E-03 -3.64E-04 2.86E-05 -1.62E-06 6.34E-08 -1.80E-09 2.74E-11 S21 -4.85E+00 -7.14E-04 -2.19E-04 1.71E-05 -1.15E-06 5.10E-08 -1.33E-09 1.78E-11 S22 -4.07E+00 -2.41E-03 -1.46E-04 1.12E-05 -5.12E-07 1.48E-08 -8.52E-11 -1.91E-12 S23 -6.98E+00 -3.59E-03 7.20E-05 2.39E-06 -3.57E-07 1.93E-08 -5.40E-10 6.30E-12

[0170] The maximum field of view (FOV) of the optical lens provided in Example 4 is 88.11°. Figure 4B is a distortion diagram of the optical lens of Example 4, according to Figure 4B It can be seen that the maximum optical distortion of the optical lens provided in Example 4 is -3.29%, which can achieve good imaging quality.

[0171] In summary, Examples 1 to 4 respectively satisfy the relationships shown in Table 9 below.

[0172] Table 9

[0173] Conditional formula\Example Example 1 Example 2 Example 3 Example 4 -2.18≤F1 / F≤-1.7 -2.10 -2.11 -2.06 -2.05 1.28≤F2 / F1≤3.45 2.51 1.95 1.59 1.95 -2.7≤(R21+R22) / F2≤-0.4 -0.53 -0.65 -1.40 -2.35 0.5≤F3 / (R31+R32)≤3.1 1.45 2.80 0.89 1.34 5.0≤TTL / F≤5.5 5.25 5.13 5.09 5.16 1.75≤DM1 / F≤2.35 2.00 1.94 1.91 1.95 -2.5≤Fa / F2≤-1.1 -1.62 -1.28 -1.27 -1.91 0.85≤F4 / F5≤1.65 1.27 1.43 1.34 1.19 -0.15≤(F3+F4) / (F10+F11+F12)≤0.05 0.00 -0.08 0.01 -0.01 12.7≤V6 / F≤15.6 14.72 14.57 14.63 14.82 12.5≤V7 / F≤19.5 14.72 14.57 16.17 16.37 12.7≤V9 / F≤15.6 14.72 14.57 14.63 14.82 4.6≤|F11 / F|≤19 7.65 18.79 9.62 4.71 2.0≤F12 / F≤7.31 3.69 6.51 2.56 2.58

[0174] The present application also provides an electronic device, which may include the 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.

[0175] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention herein is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features having similar functions disclosed in this application.

Claims

1. An optical lens, characterized in that: The optical lens comprises, in order from the object side to the image side along the optical axis: a first lens having negative optical power; a second lens having negative optical power; a third lens having negative optical power; a fourth lens element having positive optical power; a fifth lens having positive refractive power; a sixth lens having positive optical power; a seventh lens having positive optical power; an eighth lens having negative optical power; a ninth lens element having positive optical power; a tenth lens having optical power; an eleventh lens having optical power; and a twelfth lens having positive refractive power; The effective focal length F3 of the third lens, the curvature radius R31 of the object-side surface of the third lens, and the curvature radius R32 of the image-side surface of the third lens satisfy: 0.5≤F3 / (R31+R32)≤3.

1.

2. The optical lens according to claim 1, wherein: The object side surface of the first lens is convex, and the image side surface is concave; The object-side surface of the second lens is convex, and the image-side surface is concave; and The object-side surface of the twelfth lens is convex, and the image-side surface is concave.

3. The optical lens according to claim 1, wherein: The object side surface of the third lens is concave, and the image side surface is convex; The object side surface of the fourth lens is a convex surface; The object-side surface of the fifth lens is convex, and the image-side surface is convex; The object-side surface and the image-side surface of the sixth lens are both convex surfaces; The object-side surface of the seventh lens is concave, and the image-side surface is convex; The object-side surface and the image-side surface of the eighth lens are both concave; The object-side surface and the image-side surface of the ninth lens are both convex surfaces; and The object-side surface of the eleventh lens is convex, and the image-side surface is concave.

4. The optical lens according to claim 1, wherein: The effective focal length F1 of the first lens and the effective focal length F of the optical lens satisfy the following: -2.18≤F1 / F≤-1.

7.

5. The optical lens according to claim 1, wherein: The effective focal length F2 of the second lens and the effective focal length F1 of the first lens satisfy the following: 1.28≤F2 / F1≤3.

45.

6. The optical lens according to claim 1, wherein: A curvature radius R21 of the object-side surface of the second lens, a curvature radius R22 of the image-side surface of the second lens, and an effective focal length F2 of the second lens satisfy: -2.7≤(R21+R22) / F2≤-0.

4.

7. The optical lens according to claim 2 or 3, characterized in that: A combined effective focal length Fa of the eleventh lens and the twelfth lens and an effective focal length F2 of the second lens satisfy the following: -2.5≤Fa / F2≤-1.

1.

8. The optical lens according to any one of claims 1 to 6, 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 an effective focal length F of the optical lens satisfy the following conditions: 5.0≤TTL / F≤5.

5.

9. The optical lens according to any one of claims 1 to 6, wherein: The maximum effective optical semi-aperture DM1 of the object side and the image side of the first lens and the effective focal length F of the optical lens satisfy: 1.75≤DM1 / F≤2.

35.

10. The optical lens according to any one of claims 1 to 6, characterized in that: The effective focal length F4 of the fourth lens and the effective focal length F5 of the fifth lens satisfy the following: 0.85≤F4 / F5≤1.

65.

11. The optical lens according to any one of claims 1 to 6, characterized in that: The effective focal length F3 of the third lens, the effective focal length F4 of the fourth lens, the effective focal length F10 of the tenth lens, the effective focal length F11 of the eleventh lens, and the effective focal length F12 of the twelfth lens satisfy the following: -0.15≤(F3+F4) / (F10+F11+F12)≤0.

05.

12. The optical lens according to any one of claims 1 to 6, wherein: The Abbe number V6 of the sixth lens, the Abbe number V7 of the seventh lens, the Abbe number V9 of the ninth lens and the effective focal length F of the optical lens satisfy the following conditions: 12.7≤V6 / F≤15.6, 12.5≤V7 / F≤19.5, and 12.7≤V9 / F≤15.

6.

13. The optical lens according to any one of claims 1 to 6, characterized in that: The effective focal length F11 of the eleventh lens and the effective focal length F of the optical lens satisfy the following: 4.6≤|F11 / F|≤19.

14. The optical lens according to any one of claims 1 to 6, characterized in that: The effective focal length F12 of the twelfth lens and the effective focal length F of the optical lens satisfy the following: 2.0≤F12 / F≤7.

31.

15. The optical lens according to claim 1, wherein: The optical lens meets at least one of the following requirements: -2.0≤Fa / F2≤-1.2, -2.15≤F1 / F≤-2.0, 1.5≤F2 / F1≤2.55, -2.4≤(R21+R22) / F2≤-0.5, 0.85≤F3 / (R31+R32)≤2.85, 5.0≤TTL / F≤5.3, 1.85≤DM1 / F≤2.05, 1.1≤F4 / F5≤1.5, -0.1≤(F3+F4) / (F10+F11+F12)≤0.05, 14.5≤V6 / F≤14.9, 14.5≤V7 / F≤16.4, 14.5≤V9 / F≤14.9, 4.7≤|F11 / F|≤18.8, 2.5≤F12 / F≤6.6, in, Fa is the combined effective focal length of the eleventh lens and the twelfth lens, F1 is the effective focal length of the first lens, F2 is the effective focal length of the second lens, F3 is the effective focal length of the third lens, F4 is the effective focal length of the fourth lens, F5 is the effective focal length of the fifth lens, F10 is the effective focal length of the tenth lens, F11 is the effective focal length of the eleventh lens, and F12 is the effective focal length of the twelfth lens. TTL is the distance from the object-side surface of the first lens to the imaging plane of the optical lens on the optical axis. DM1 is the maximum effective optical semi-aperture of the object-side surface and the image-side surface of the first lens. R21 is the curvature radius of the object-side surface of the second lens, R22 is the curvature radius of the image-side surface of the second lens, R31 is the curvature radius of the object-side surface of the third lens, and R32 is the curvature radius of the image-side surface of the third lens. V6 is the Abbe number of the sixth lens, V7 is the Abbe number of the seventh lens, and V9 is the Abbe number of the ninth lens.

Images