Optical lens, camera module and terminal device

Abstract

The application discloses an optical lens, a camera module and a terminal device. The optical lens comprises seven lenses with refractive power. The first lens has negative refractive power, the object side is a convex surface, and the image side is a concave surface. The second lens has negative refractive power, the object side is a concave surface, and the image side is a convex surface. The third lens has positive refractive power, and the object side and the image side are both convex surfaces. The fourth lens has positive refractive power, and the object side is a convex surface. The fifth lens has positive refractive power, and the object side and the image side are both convex surfaces. The sixth lens has negative refractive power, and the object side is a concave surface. The seventh lens has positive refractive power, and the object side and the image side are a convex surface and a concave surface respectively. The optical lens satisfies the following relationship: 115deg <= FOV <= 125deg and 5 < TTL / F < 7. The optical lens, the camera module and the terminal device can meet the miniaturized design of the optical lens and have better imaging quality.

Description

Technical Field

[0001] This application relates to the field of optical imaging technology, and in particular to an optical lens, camera module and terminal device. Background Technology

[0002] With the development of the automotive industry, national requirements for road traffic safety and vehicle safety are constantly increasing. The application of ADAS (Advanced Driving Assistance System), DMS (Driver Monitoring System), and CMS (Camera Monitor System) in vehicle driving is gradually being promoted. In the context of the rise of intelligent cockpits, the requirements for automotive cameras are also gradually increasing. However, current automotive cameras, in the trend of miniaturization, cannot achieve high-pixel imaging. Summary of the Invention

[0003] This application provides an optical lens, a camera module, and a terminal device that can achieve high-pixel imaging while meeting the requirements of miniaturized optical lens design.

[0004] To achieve the above objectives, in a first aspect, embodiments of this application disclose an optical lens comprising seven lenses with refractive power, including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens arranged sequentially along the optical axis from the object side to the image side;

[0005] The first lens has negative refractive power, the object side of the first lens is convex near the optical axis, and the image side of the first lens is concave near the optical axis.

[0006] The second lens has negative refractive power, the object side of the second lens is concave near the optical axis, and the image side of the second lens is convex near the optical axis;

[0007] The third lens has positive refractive power, and both the object-side and image-side surfaces of the third lens are convex near the optical axis.

[0008] The fourth lens has positive refractive power, and the object side of the fourth lens is convex near the optical axis;

[0009] The fifth lens has positive refractive power, and both the object-side and image-side surfaces of the fifth lens are convex near the optical axis.

[0010] The sixth lens has negative refractive power, and the object side of the sixth lens is concave near the optical axis;

[0011] The seventh lens has positive refractive power, the object side of the seventh lens is convex near the optical axis, and the image side of the seventh lens is concave near the optical axis.

[0012] The optical lens satisfies the following relationship:

[0013] 115deg≤FOV≤125deg and 5 <TTL / F<7;

[0014] Wherein, FOV is the maximum field of view of the optical lens, TTL is the distance on the optical axis from the object side of the first lens to the imaging surface of the optical lens, and F is the focal length of the optical lens.

[0015] In the optical lens provided in this application, in order to meet the requirements of miniaturization of the optical lens while also ensuring high imaging quality, the refractive power and surface shape of the seven lenses are rationally configured. Specifically, the first lens is set to have negative refractive power, and its object-side and image-side surfaces are convex and concave near the optical axis, respectively, which helps to collect more light into the optical lens and achieve a wide-angle optical lens. The second lens has negative refractive power, and its object-side and image-side surfaces are concave and convex near the optical axis, respectively, which helps to allow light to enter the optical lens smoothly, thereby correcting the distortion of the optical lens and reducing the aberrations generated by the optical lens, thus improving the imaging quality. The third lens has positive refractive power, and its object-side and image-side surfaces are convex near the optical axis, which helps correct field curvature of the optical lens. The fourth lens has positive refractive power, and its object-side surface is convex near the optical axis, which helps correct aberrations of the optical lens. The fifth lens has positive refractive power, and the sixth lens has negative refractive power. The fifth lens has convex object-side and image-side surfaces near the optical axis, and the sixth lens has a concave object-side surface near the optical axis. This design allows the fifth and sixth lenses to be cemented together, which helps correct aberrations and improves image quality. It also allows for a reasonable distribution of the refractive power of the fifth and sixth lenses. The seventh lens has positive refractive power, and its object-side and image-side surfaces are convex and concave near the optical axis, respectively. This design can correct off-axis spherical aberration and chromatic aberration of the optical lens, thus improving the image quality of the optical lens.

[0016] Meanwhile, among the seven lenses of the optical lens, many lenses adopt a concave-convex lens design, which can further reduce the overall length of the optical lens, thereby achieving a miniaturized design of the optical lens.

[0017] Furthermore, by limiting the optical lens to satisfy the relationship 115deg≤FOV≤125deg, the optical lens can have a large field of view and achieve wide-angle imaging.

[0018] In addition, when the optical lens satisfies 5 < TTL / F < 7, miniaturization of the optical lens can be achieved, and at the same time, the optical lens can have the characteristic of wide-angle.

[0019] As an optional implementation manner, in the embodiment of the first aspect of the present application, the optical lens satisfies the following relational expressions: 1.2 < F / IMGH < 1.5, and / or, 2 < F*tan(FOV / 2) / IMGH < 2.5, and / or, 0.9 < ASAGS1 / SAGS1 < 4;

[0020] Where, IMGH is half of the image height corresponding to the maximum field angle of the optical lens, tan(FOV / 2) is the tangent value of half of the maximum field angle of the optical lens, ASAGS1 is the sag amount of the paraxial curvature radius of the object side of the first lens, and SAGS1 is the distance in the optical axis direction from the maximum effective semi-aperture of the object side of the first lens to the intersection of the object side of the first lens and the optical axis.

[0021] When the optical lens satisfies 1.2 < F / IMGH < 1.5, a wide-angle large image plane design of the optical lens can be achieved, and further high-pixel imaging can be realized.

[0022] When the optical lens satisfies 2 < F*tan(FOV / 2) / IMGH < 2.5, miniaturization of the optical lens can be achieved, and at the same time, a wide-angle large image plane design of the optical lens can be realized.

[0023] When the optical lens satisfies 0.9 < ASAGS1 / SAGS1 < 4, negative refractive power can be provided for the optical lens, which is beneficial to controlling the aperture of the first lens and can capture the light rays entering the optical lens at large angles, expanding the field angle range of the optical lens, and further facilitating large field angle imaging of the optical lens.

[0024] As an optional implementation manner, in the embodiment of the first aspect of the present application, the optical lens satisfies the following relational expressions: 3 < TTL / L1ST / < 4, and / or, -3 < SAGS2 / SAGS3 < -1.5, and / or, CT45 / CT34 > 20;

[0025] Where, L1ST is the distance from the object side of the first lens to the aperture of the optical lens on the optical axis, SAGS2 is the distance in the optical axis direction from the maximum effective semi-aperture of the image side of the first lens to the intersection of the image side of the first lens and the optical axis, SAGS3 is the distance in the optical axis direction from the maximum effective semi-aperture of the object side of the second lens to the intersection of the object side of the second lens and the optical axis, CT45 is the distance from the image side of the fourth lens to the object side of the fifth lens on the optical axis, and CT34 is the distance from the image side of the third lens to the object side of the fourth lens on the optical axis.

[0026] When the optical lens satisfies 3 < TTL / L1ST < 4, the distance between the first lens and the aperture of the optical lens can be reasonably controlled, so as to reasonably control the field curvature of the optical lens while realizing the miniaturized design of the optical lens, which is beneficial to improving the imaging quality of the optical lens.

[0027] When the optical lens satisfies -3 < SAGS2 / SAGS3 < -1.5, the ratio of the sagittal height of the image side of the first lens to the sagittal height of the object side of the second lens can be reasonably controlled, so as to control the surface shapes of the image side of the first lens and the object side of the second lens, preventing the surface shapes from being too curved and prone to ghost images, thus increasing the risk of ghost images.

[0028] When the optical lens satisfies CT45 / CT34 > 20, the ratio of the distance between the fourth lens and the fifth lens to the distance between the third lens and the fourth lens can be reasonably controlled, so that there is enough distance between the fourth lens and the fifth lens, and at the same time, the lens space of the optical lens can be reasonably arranged, facilitating the assembly of the lenses.

[0029] As an optional implementation manner, in the embodiment of the first aspect of the present application, the optical lens satisfies the following relational expressions: 1.5 < F34 / F < 2.5, and / or, F7 / F > 4, and / or, 1.5 < F / BFL < 2;

[0030] Where, F34 is the combined focal length of the third lens and the fourth lens, F7 is the focal length of the seventh lens, and BFL is the distance from the image side of the seventh lens to the imaging surface of the optical lens on the optical axis.

[0031] When the optical lens satisfies 1.5 < F34 / F < 2.5, the ratio of the combined focal length of the third lens and the fourth lens to the focal length of the optical lens can be reasonably controlled, so as to reasonably distribute the refractive powers of the third lens and the fourth lens, which is beneficial to providing a positive refractive power for the optical lens, enabling better light convergence ability of the optical lens, correcting the distortion of the optical lens and reducing the aberration generated by the optical lens, and improving the imaging quality of the optical lens.

[0032] When the optical lens satisfies F7 / F > 4, since the seventh lens provides positive refractive power for the optical lens and provides the main light converging ability of the lens group of the optical lens, therefore, by controlling the ratio relationship between the focal length of the seventh lens and the focal length of the optical lens, it is beneficial to reasonably distribute the positive optical power of the optical lens and shorten the overall optical length of the optical lens. When exceeding the upper limit of the relational expression, the focal length of the seventh lens becomes larger, the light deflection is large, and it is easy to increase the aberration of the off-axis field. When lower than the lower limit of the relational expression, the focal length of the optical lens is too large and the overall length of the optical lens is too long, which is not conducive to the miniaturization design of the optical lens.

[0033] When the optical lens satisfies 1.5 < F / BFL < 2, it can effectively control the back focal length of the optical lens within a reasonable range, enabling the optical lens to achieve miniaturization design.

[0034] As an optional implementation manner, in the embodiment of the first aspect of the present application, the optical lens satisfies the following relational expressions:

[0035] 2 < (R1 + R2) / (R1 - R2) < 4, and / or, 1.3 < ET1 / CT1 < 1.9, and / or, -10 < F1 / CT1 < -5;

[0036] Wherein, R1 is the curvature radius of the object side of the first lens at the optical axis, R2 is the curvature radius of the image side of the first lens at the optical axis, ET1 is the distance in the direction parallel to the optical axis from the maximum effective semi-aperture of the object side of the first lens to the maximum effective semi-aperture of the image side of the first lens, CT1 is the thickness of the first lens on the optical axis, and F1 is the focal length of the first lens.

[0037] When the optical lens satisfies the relational expression 2 < (R1 + R2) / (R1 - R2) < 4, it can reasonably control the curvature radii of the object side and the image side of the first lens at the near optical axis, thereby being beneficial to controlling the shape of the first lens, correcting the aberration generated by itself, and improving the imaging quality.

[0038] When the optical lens satisfies the relational expression 1.3 < ET1 / CT1 < 1.9, it can reasonably control the ratio of the central thickness to the edge thickness of the first lens, so that the overall thickness of the first lens is appropriate, and further is beneficial to the miniaturization design of the optical lens.

[0039] When the optical lens satisfies the relational expression -10 < F1 / CT1 < -5, it can reasonably configure the refractive power and thickness of the first lens, thereby effectively controlling the incident angle of light in the optical lens, reducing the sensitivity of the optical lens, being beneficial to correcting the aberration generated by the optical lens, and further being beneficial to improving the imaging quality of the optical lens.

[0040] As an optional implementation manner, in the embodiment of the first aspect of the present application, the optical lens satisfies the following relational expressions:

[0041] 1 < CT2 / F < 1.5, and / or, 5 < CTMAX / CTMIX < 8, and / or, 4 < TTL / CTMAX < 7;

[0042] Wherein, CT2 is the thickness of the second lens on the optical axis, CTMAX is the maximum thickness on the optical axis among the first lens to the seventh lens, and CTMIX is the minimum thickness on the optical axis among the first lens to the seventh lens.

[0043] When the optical lens satisfies the relational expression 1 < CT2 / F < 1.5, the refractive power and thickness of the second lens can be reasonably configured, so as to effectively control the deflection angle of light rays in the optical lens, and further reduce the sensitivity of the optical lens, which is beneficial to correcting the aberration of the optical lens, and further beneficial to improving the imaging quality of the optical lens.

[0044] When the optical lens satisfies the relational expression 5 < CTMAX / CTMIX < 8, the ratio of the maximum central thickness to the minimum central thickness among the first lens to the seventh lens can be reasonably controlled, so as to facilitate the control of the optical power of the first lens and the second lens, enabling the aberration of the first lens and the second lens to be mutually compensated, and reducing the aberration generated by the optical lens.

[0045] When the optical lens satisfies the relational expression 4 < TTL / CTMAX < 7, the proportion of the maximum central thickness in the total length of the optical lens can be reasonably configured, so that the overall structure of the optical lens is compact, which is beneficial to the miniaturization design of the optical lens.

[0046] As an optional implementation manner, in the embodiment of the first aspect of the present application, the fifth lens and the sixth lens form a cemented lens, and the optical lens satisfies the following relational expressions:

[0047] VD5 - VD6 > 35, and / or, -30mm < R10 / (N6 - N5) < -10mm, and / or, 4 < F56 / F < 15;

[0048] Wherein, VD5 is the Abbe number of the fifth lens, VD6 is the Abbe number of the sixth lens, R10 is the curvature radius of the image side surface of the fifth lens at the optical axis, N6 is the refractive index of the sixth lens, N5 is the refractive index of the fifth lens, and F56 is the combined focal length of the fifth lens and the sixth lens.

[0049] When the optical lens satisfies the relation VD5 - VD6 > 35, it is beneficial to select a suitable lens material, thereby effectively correcting chromatic aberration, avoiding serious purple fringing when the optical lens is shooting, and being conducive to improving the shooting imaging clarity and imaging quality of the optical lens.

[0050] When the optical lens satisfies the relation -30mm < R10 / (N6 - N5) < -10mm, it is beneficial to select a suitable lens material, thereby being able to correct chromatic aberration, avoiding serious purple fringing when the optical lens is shooting, and further being conducive to improving the imaging clarity of the optical lens.

[0051] When the optical lens satisfies the relation 4 < F56 / F < 15, it is possible to reasonably control the refractive powers of the fifth lens and the sixth lens, avoiding large aberration problems caused by excessive refractive powers of the fifth lens and the sixth lens, and thus being conducive to improving the imaging quality of the optical lens.

[0052] As an optional implementation manner, in the embodiment of the first aspect of the present application, the optical lens satisfies the following relations:

[0053] F * R5 / (N3 - 1) < 295mm 2 , and / or, 70deg < FOV / FNO < 80deg, and / or, 140deg < FOV * F / IMGH < 180deg;

[0054] Wherein, R5 is the curvature radius of the object side surface of the third lens at the optical axis, N3 is the refractive index of the third lens, FNO is the aperture number of the optical lens, and IMGH is half of the image height corresponding to the maximum field angle of the optical lens.

[0055] When the optical lens satisfies the relation F * R5 / (N3 - 1) < 295mm 2 , it is possible to select a suitable lens material, and at the same time, it is also possible to reasonably control the refractive power and curvature radius of the third lens, so that the third lens can provide a suitable positive refractive power, avoiding aberration problems caused by excessive refractive power of the third lens.

[0056] When the optical lens satisfies the relation 70deg < FOV / FNO < 80deg, it is possible to reasonably control the ratio of the field angle and the aperture number of the optical lens, so that the optical lens has the characteristics of wide angle and large aperture, thereby being able to achieve wide-angle imaging and improving the light input amount of the optical lens, and enabling the optical lens to be also applicable to night or scenes with low ambient brightness.

[0057] When the optical lens satisfies the relational expression 140deg < FOV * F / IMGH < 180deg, it can make the optical lens have relatively small optical distortion and image deformation during the imaging process, ensure the imaging quality, facilitate the subsequent recognition and determination of its imaging details, and provide good imaging assistance for driving assistance.

[0058] In a second aspect, the present application discloses an imaging module, which includes an image sensor and the optical lens as described in the first aspect above. The image sensor is disposed on the image side of the optical lens.

[0059] In a third aspect, the present application discloses a terminal device, which includes a housing and the imaging module as described in the second aspect above. The imaging module is disposed in the housing.

[0060] Compared with the related art, the beneficial effects of the present application are as follows:

[0061] In the optical lens provided by the present application, in order to meet the requirements of miniaturized design of the optical lens while taking into account high imaging quality, the refractive powers and surface shapes of the seven lenses are reasonably configured. That is, the first lens is set to have a negative refractive power, and with the design that its object side and image side are convex and concave respectively near the optical axis, it is beneficial to collect more light into the optical lens and achieve wide-angleization of the optical lens; the second lens has a negative refractive power, and with the design that its object side and image side are concave and convex respectively near the optical axis, it is beneficial for the light to enter the optical lens gently, thereby being able to correct the distortion of the optical lens and reduce the aberration generated by the optical lens, and improve the imaging quality; the third lens has a positive refractive power, and with the design that its object side and image side are both convex near the optical axis, it is beneficial to correct the field curvature of the optical lens; the fourth lens has a positive refractive power, and with the design that the object side of the fourth lens is convex near the optical axis, it is beneficial to correct the aberration of the optical lens; the fifth lens has a positive refractive power, the sixth lens has a negative refractive power, and with the design that the object side and image side of the fifth lens are both convex and the object side of the sixth lens is concave near the optical axis, on the one hand, it can make the fifth lens and the sixth lens be glued together, which is beneficial to correct the aberration of the optical lens and improve the imaging quality, and on the other hand, it can also reasonably distribute the refractive powers of the fifth lens and the sixth lens. The seventh lens has a positive refractive power, and with the design that its object side and image side are convex and concave respectively near the optical axis, it can correct the off-axis spherical aberration and chromatic dispersion of the optical lens, thereby being beneficial to improving the imaging quality of the optical lens. At the same time, among the seven lenses of the optical lens, multiple lenses adopt the design of convex-concave lenses, which can further reduce the overall length of the optical lens, thereby realizing the miniaturized design of the optical lens.

[0062] In addition, by defining that the optical lens satisfies the relational expression 115deg ≤ FOV ≤ 125deg, the optical lens has a large viewing angle and can achieve wide-angle imaging.

[0063] Moreover, when the optical lens satisfies 5 < TTL / F < 7, it can achieve miniaturization of the optical lens while enabling the optical lens to have the characteristic of wide-angleization. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0065] Figure 1 is a schematic structural diagram of an optical lens disclosed in the first embodiment of the present application;

[0066] Figure 2 is a spherical aberration diagram, an astigmatism curve diagram, and a distortion curve diagram of the optical lens disclosed in the first embodiment of the present application;

[0067] Figure 3 is a schematic structural diagram of an optical lens disclosed in the second embodiment of the present application;

[0068] Figure 4 is a spherical aberration diagram, an astigmatism curve diagram, and a distortion curve diagram of the optical lens disclosed in the second embodiment of the present application;

[0069] Figure 5 is a schematic structural diagram of an optical lens disclosed in the third embodiment of the present application;

[0070] Figure 6 is a spherical aberration diagram, an astigmatism curve diagram, and a distortion curve diagram of the optical lens disclosed in the third embodiment of the present application;

[0071] Figure 7 is a schematic structural diagram of an optical lens disclosed in the fourth embodiment of the present application;

[0072] Figure 8 is a spherical aberration diagram, an astigmatism curve diagram, and a distortion curve diagram of the optical lens disclosed in the fourth embodiment of the present application;

[0073] Figure 9 is a schematic structural diagram of an optical lens disclosed in the fifth embodiment of the present application;

[0074] Figure 10 is a spherical aberration diagram, an astigmatism curve diagram, and a distortion curve diagram of the optical lens disclosed in the fifth embodiment of the present application;

[0075] Figure 11 This is a schematic diagram of the structure of the optical lens disclosed in the sixth embodiment of this application;

[0076] Figure 12 These are the spherical aberration diagram, astigmatism curve diagram, and distortion curve diagram of the optical lens disclosed in the sixth embodiment of this application;

[0077] Figure 13 This is a schematic diagram of the structure of the optical lens disclosed in the seventh embodiment of this application;

[0078] Figure 14 These are the spherical aberration diagram, astigmatism curve diagram, and distortion curve diagram of the optical lens disclosed in the seventh embodiment of this application;

[0079] Figure 15 This is a schematic diagram of the camera module disclosed in this application;

[0080] Figure 16 This is a structural diagram of a mobile phone when the terminal device disclosed in this application is a mobile phone;

[0081] Figure 17 This is a structural diagram of the terminal device disclosed in this application when it is a car. Detailed Implementation

[0082] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0083] In this invention, the terms "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0084] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0085] Furthermore, the terms "set" and "located in" should be interpreted broadly. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0086] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0087] The technical solution of this application will be further described below with reference to the embodiments and accompanying drawings.

[0088] Please see Figure 1 This application discloses an optical lens 100, which includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens arranged sequentially along the optical axis from the object side to the image side. The first lens L1 has negative refractive power, the second lens L2 has negative refractive power, the third lens L3 has positive refractive power, the fourth lens L4 has positive refractive power, the fifth lens L5 has positive refractive power, the sixth lens L6 has negative refractive power, and the seventh lens L7 has positive refractive power. During imaging, light rays enter sequentially from the object side of the first lens L1 through the first lens L1, second lens L2, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, and seventh lens L7, and are ultimately imaged onto the imaging plane IMG of the optical lens 100.

[0089] Furthermore, the object-side surface S1 of the first lens L1 is convex near the optical axis, and the image-side surface S2 of the first lens L1 is concave near the optical axis; the object-side surface S3 of the second lens L2 is concave near the optical axis, and the image-side surface S4 of the second lens L2 is convex near the optical axis; the object-side surface S5 of the third lens L3 is convex near the optical axis, and the image-side surface S6 of the third lens L3 is convex near the optical axis; the object-side surface S7 of the fourth lens L4 is concave near the optical axis. The image-side surface S8 of the fourth lens L4 can be convex or concave near the optical axis; the object-side surface S9 and image-side surface S10 of the fifth lens L5 are both convex near the optical axis; the object-side surface S11 of the sixth lens L6 is concave near the optical axis, and the image-side surface S12 of the sixth lens L6 can be convex or concave near the optical axis; the object-side surface S13 of the seventh lens L7 is convex near the optical axis, and the image-side surface S14 of the seventh lens is concave near the optical axis.

[0090] Optionally, all seven lenses can be made of plastic, making the optical lens 100 lighter and easier to process for complex shapes. Alternatively, all seven lenses can be made of glass, or a design can be used where some lenses are plastic and some are glass.

[0091] Optionally, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, and the sixth lens L6 are all spherical lenses, while the first lens L1 and the seventh lens L7 can be aspherical lenses. Thus, combining spherical and aspherical lenses can improve higher-order aberrations and thereby enhance image quality. Of course, in other embodiments, the first lens L1 to the seventh lens L7 can all be spherical lenses, or the first lens L1 to the seventh lens L7 can all be aspherical lenses. The specific choice can be adjusted according to actual imaging requirements, and this embodiment does not impose specific limitations on this.

[0092] In some embodiments, the optical lens 100 also includes an aperture stop STO, which is disposed between the second lens L2 and the third lens L3. The use of a centrally located aperture stop STO is beneficial for the aberration correction of the optical lens 100.

[0093] In some embodiments, the optical lens 100 further includes an infrared filter IR, which is disposed between the image-side surface S14 of the seventh lens and the imaging surface IMG of the optical lens 100. In this embodiment, the infrared cut-off filter IR can be selected to filter out light of other wavelengths, such as infrared light, while allowing only visible light to pass through, making the image more consistent with the visual experience of the human eye. Of course, the infrared bandpass filter IR can also be selected to filter out light of other wavelengths, such as visible light, while allowing only infrared light to pass through. By filtering out light of other wavelengths, such as visible light, the image quality is improved; and the optical lens 100 can be used as an infrared optical lens, that is, the optical lens 100 can also image and obtain better image effects in dim environments and other special application scenarios. Preferably, the filter IR can be made of glass. Of course, in other embodiments, the filter IR can also be made of optical glass with a coating, or a filter IR of other materials, which can be selected according to actual needs. This embodiment does not make specific limitations.

[0094] In some embodiments, the optical lens 100 also includes a protective glass CG disposed between the filter IR and the imaging surface IMG, so that it can be close to the image sensor during subsequent assembly, thereby playing a protective role.

[0095] In some embodiments, the optical lens 100 satisfies the relationship 115deg≤FOV≤125deg, where FOV is the maximum field of view of the optical lens 100. When the optical lens 100 satisfies this relationship, it can have a large field of view, thereby enabling wide-angle imaging.

[0096] In some embodiments, the optical lens 100 satisfies the relation FNO < 1.7, where FNO is the f-number of the optical lens 100. In this way, the optical lens 100 has the characteristic of a large aperture, which can increase the amount of light entering the optical lens 100, so that the optical lens 100 can also be applicable to night or scenes with low ambient brightness. Optionally, the relation can further satisfy 1.5 < FNO < 1.7, so as to meet the large-aperture characteristic of the optical lens 100.

[0097] In some embodiments, the optical lens 100 satisfies the relation 5 < TTL / F < 7, where TTL is the distance from the object side surface S1 of the first lens L1 to the imaging surface of the optical lens 100 on the optical axis, and F is the focal length of the optical lens 100. When the optical lens 100 satisfies 5 < TTL / F < 7, it can achieve miniaturization of the optical lens 100 while enabling the optical lens 100 to have the characteristic of wide-angle. Optionally, the relation can further satisfy 5.4 < TTL / F < 6.5, so as to reasonably balance the miniaturization and wide-angle design.

[0098] In some embodiments, the optical lens 100 satisfies the relation 1.2 < F / IMGH < 1.5, where IMGH is half of the image height corresponding to the maximum field angle of the optical lens 100. When the optical lens 100 satisfies 1.2 < F / IMGH < 1.5, it can enable the optical lens 100 to achieve a wide-angle large-image-plane design, and further achieve high-pixel imaging.

[0099] In some embodiments, the optical lens 100 satisfies the relation 7.5 < TTL / IMGH < 8.5, so as to reasonably control the relationship between the total length of the optical lens 100 and the image height corresponding to the maximum field angle of the optical lens 100, so that when the optical lens 100 realizes miniaturization design, it can also have the characteristic of a large image plane, which is beneficial to improving the resolution and clarity of the optical lens 100 and achieving high-definition imaging.

[0100] In some embodiments, the optical lens 100 satisfies the relation 2 < F*tan(FOV / 2) / IMGH < 2.5, where tan(FOV / 2) is the tangent value of half of the maximum field angle of the optical lens 100. When the optical lens 100 satisfies 2 < F*tan(FOV / 2) / IMGH < 2.5, it can achieve miniaturization of the optical lens 100 while enabling the optical lens 100 to achieve a wide-angle large-image-plane design.

[0101] In some embodiments, the optical lens 100 satisfies the relation 0.9 < ASAGS1 / SAGS1 < 4, where ASAGS1 is the sag of the paraxial curvature radius of the object side S1 of the first lens L1, and SAGS1 is the distance in the optical axis direction from the maximum effective semi-aperture of the object side S1 of the first lens L1 to the intersection of the object side S1 of the first lens L1 and the optical axis (i.e., the sag of the object side S1 of the first lens L1). By controlling the ratio of the sag of the paraxial curvature radius of the object side S1 of the first lens L1 and the sag of the object side S1 of the first lens L1, a negative refractive power can be provided for the optical lens 100, which is beneficial to controlling the aperture of the first lens L1 and capturing the light rays entering the optical lens 100 at large angles, expanding the field angle range of the optical lens 100, and further facilitating the realization of large field angle imaging of the optical lens 100.

[0102] In some embodiments, the optical lens 100 satisfies the relation 3 < TTL / L1ST / < 4, where L1ST is the distance from the object side S1 of the first lens L1 to the diaphragm of the optical lens 100 on the optical axis. As known from the foregoing, the diaphragm is located between the first lens L1 and the second lens L2. When this relation is satisfied, the distance between the first lens L1 and the diaphragm of the optical lens 100 can be reasonably controlled, so as to reasonably control the field curvature of the optical lens 100 while realizing the miniaturized design of the optical lens 100, which is beneficial to improving the imaging quality of the optical lens 100.

[0103] In some embodiments, the optical lens 100 satisfies the relation -3 < SAGS2 / SAGS3 < -1.5, where SAGS2 is the distance in the optical axis direction from the maximum effective semi-aperture of the image side S2 of the first lens L1 to the intersection of the image side S2 of the first lens L1 and the optical axis (i.e., the sag of the image side S2 of the first lens L1), and SAGS3 is the distance in the optical axis direction from the maximum effective semi-aperture of the image side S4 of the second lens L2 to the intersection of the object side S3 of the second lens L2 and the optical axis (i.e., the sag of the object side S3 of the second lens L2). When the optical lens 100 satisfies -3 < SAGS2 / SAGS3 < -1.5, the ratio of the sag of the image side S2 of the first lens L1 and the sag of the object side S3 of the second lens L2 can be reasonably controlled, so as to control the surface shapes of the image side S2 of the first lens L1 and the object side S3 of the second lens L2, preventing the surface shapes from being too curved and prone to generating ghost images, increasing the risk of ghost images.

[0104] In some embodiments, the optical lens 100 satisfies the relation CT45 / CT34 > 20, where CT45 is the distance on the optical axis from the image side surface S8 of the fourth lens L4 to the object side surface S9 of the fifth lens L5, and CT34 is the distance on the optical axis from the image side surface S6 of the third lens L3 to the object side surface S7 of the fourth lens L4. When the optical lens 100 satisfies CT45 / CT34 > 20, the ratio of the distance between the fourth lens L4 and the fifth lens L5 to the distance between the third lens L3 and the fourth lens L4 can be reasonably controlled, so that while there is sufficient distance between the fourth lens L4 and the fifth lens L5, the lens space of the optical lens 100 can be reasonably arranged, facilitating the assembly of the lenses. Optionally, this relation can further satisfy 20 < CT45 / CT34 < 50, thereby enabling more reasonable control of the distance between the third lens L3 and the fourth lens L4 and the distance between the fourth lens L4 and the fifth lens L5.

[0105] In some embodiments, the optical lens 100 satisfies the relation 70deg < FOV / FNO < 80deg, which can reasonably control the ratio of the field of view angle to the f-number of the optical lens 100, so that the optical lens 100 has the characteristics of a wide angle and a large aperture, thereby enabling wide-angle imaging and increasing the light input of the optical lens 100, making the optical lens 100 also applicable to night or scenes with low ambient brightness.

[0106] In some embodiments, the optical lens 100 satisfies the relation 140deg < FOV*F / IMGH < 180deg, which can make the optical lens 100 have relatively small optical distortion and image deformation during the imaging process, ensure the imaging quality, facilitate subsequent recognition and determination of its imaging details, and provide good imaging assistance for driving assistance.

[0107] In some embodiments, the optical lens 100 satisfies the relation -2 < F1 / F < -1, where F1 is the focal length of the first lens L1. By controlling the ratio of the focal length of the first lens L1 to the focal length of the optical lens 100, the focal length of the first lens L1 can be reasonably allocated, so that the first lens L1 can provide negative refractive power, and a reasonable refractive power distribution for the first lens L1 can be achieved, which is beneficial to light convergence. At the same time, it helps to reduce the spherical aberration, chromatic aberration, and distortion of the first lens L1 to reasonable levels, reduce the design difficulty of the subsequent lenses, and improve the overall resolving power of the optical lens 100, strengthening the peripheral aberration correction of the optical lens 100. In addition, it is also beneficial to compress the size of the first lens L1, thereby contributing to the formation of a small-sized optical lens 100.

[0108] In some embodiments, the optical lens 100 satisfies the relationship -8 < F2 / F < -6.5, where F2 is the focal length of the second lens L2. By controlling the ratio of the focal length of the second lens L2 to the focal length of the optical lens 100, the focal length of the second lens L2 can be reasonably allocated, the angle of the light incident from the first lens L1 can be reduced, and at the same time, it is beneficial to improve the overall resolution of the optical lens 100 and strengthen the peripheral aberration correction of the optical lens 100.

[0109] In some embodiments, the optical lens 100 satisfies the relationship 1.5 < F34 / F < 2.5, where F34 is the combined focal length of the third lens L3 and the fourth lens L4. When this relationship is satisfied, the ratio of the combined focal length of the third lens L3 and the fourth lens L4 to the focal length of the optical lens 100 can be reasonably controlled, so as to reasonably allocate the refractive power of the third lens L3 and the fourth lens L4, which is beneficial to provide positive refractive power for the optical lens 100, thereby enabling the optical lens 100 to have better light converging ability, and at the same time, it can correct the distortion of the optical lens 100 and reduce the aberration generated by the optical lens 100, improving the imaging quality of the optical lens 100.

[0110] In some embodiments, the optical lens 100 satisfies the relationship 3 < F3 / F < 6, where F3 is the focal length of the third lens L3. When this relationship is satisfied, the focal length of the third lens L3 can be reasonably allocated, so that the third lens L3 can provide positive refractive power for the optical lens 100, thereby enabling the optical lens 100 to have better light converging ability, and at the same time, it can correct the distortion of the optical lens 100 and reduce the aberration generated by the optical lens 100, improving the imaging quality of the optical lens 100.

[0111] In some embodiments, the optical lens 100 satisfies the relationship 3 < F4 / F < 5, where F4 is the focal length of the fourth lens L4. When this relationship is satisfied, the focal length of the fourth lens L4 can be reasonably allocated, so that the fourth lens L4 can provide positive refractive power for the optical lens 100, thereby enabling the optical lens 100 to have better light converging ability, and at the same time, it can correct the distortion of the optical lens 100 and reduce the aberration generated by the optical lens 100, improving the imaging quality of the optical lens 100.

[0112] In some embodiments, the optical lens 100 satisfies the relationship 1 < F5 / F < 2, where F5 is the focal length of the fifth lens L5. When this relationship is satisfied, the focal length of the fifth lens L5 can be reasonably allocated, so that the fifth lens L5 can provide positive refractive power for the optical lens 100, thereby enabling the optical lens 100 to have better light converging ability, and at the same time, it can correct the distortion of the optical lens 100 and reduce the aberration generated by the optical lens 100, improving the imaging quality of the optical lens 100.

[0113] In some embodiments, the optical lens 100 satisfies the relation -2 < F6 / F < -1, where F6 is the focal length of the sixth lens L6. When this relation is satisfied, the focal length of the sixth lens L6 can be reasonably allocated, enabling the third lens L3 to provide a negative refractive power to the optical lens 100, thereby correcting the distortion of the optical lens 100 and reducing the aberration generated by the optical lens 100, and improving the imaging quality of the optical lens 100.

[0114] In some embodiments, the optical lens 100 satisfies the relation F7 / F > 4, where F7 is the focal length of the seventh lens L7. Since the seventh lens L7 provides a positive refractive power to the optical lens 100 and provides the main light ray converging ability of the lens group of the optical lens 100, therefore, by controlling the ratio relationship between the focal length of the seventh lens L7 and the focal length of the optical lens 100, it is beneficial to reasonably allocate the positive optical power of the optical lens 100 and shorten the overall optical length of the optical lens 100. When exceeding the upper limit of the relation, the focal length of the seventh lens L7 becomes larger, the light ray deflection is large, and it is easy to increase the aberration of the off-axis field. When lower than the lower limit of the relation, the focal length of the optical lens 100 is too large, and the overall length of the optical lens 100 is too long, which is not conducive to the miniaturization design of the optical lens 100. Optionally, this relation can further satisfy 4 < F7 / F < 20. In this way, the focal length of the seventh lens L7 is reasonable, which is due to the miniaturization design of the optical lens 100.

[0115] In some embodiments, the optical lens 100 satisfies the relation 1.5 < F / BFL < 2, where BFL is the distance from the image side S14 of the seventh lens L7 to the imaging surface of the optical lens 100 on the optical axis. When this relation is satisfied, the back focal length of the optical lens 100 can be effectively controlled within a reasonable range, enabling the optical lens 100 to achieve a miniaturization design.

[0116] In some embodiments, the optical lens 100 satisfies the relation -10 < F1 / CT1 < -5, where CT1 is the thickness of the first lens L1 on the optical axis. When this relation is satisfied, the refractive power and thickness of the first lens L1 can be reasonably configured, thereby effectively controlling the incident angle of the light rays in the optical lens 100, reducing the sensitivity of the optical lens 100, being beneficial to correcting the aberration generated by the optical lens 100, and further being beneficial to improving the imaging quality of the optical lens 100.

[0117] In some embodiments, the optical lens 100 satisfies the relation -8 < F2 / CT2 < -4, where CT2 is the thickness of the second lens L2 on the optical axis. When this relation is satisfied, the refractive power and thickness of the second lens L2 can be reasonably configured, thereby effectively controlling the incident angle of the light rays in the optical lens 100, reducing the sensitivity of the optical lens 100, being beneficial to correcting the aberration generated by the optical lens 100, and further being beneficial to improving the imaging quality of the optical lens 100.

[0118] In some embodiments, the optical lens 100 satisfies the relation 4 < F3 / CT3 < 12, where CT3 is the thickness of the third lens L3 on the optical axis. When this relation is satisfied, the refractive power and thickness of the third lens L3 can be reasonably configured, so that light can enter the optical lens 100 more gently, reducing the sensitivity of the optical lens 100, facilitating correction of the aberration generated by the optical lens 100, and thus facilitating improvement of the imaging quality of the optical lens 100.

[0119] In some embodiments, the optical lens 100 satisfies the relation 2 < F4 / CT4 < 10, where CT4 is the thickness of the fourth lens L4 on the optical axis. When this relation is satisfied, the refractive power and thickness of the fourth lens L4 can be reasonably configured, so that light can enter the optical lens 100 more gently, reducing the sensitivity of the optical lens 100, facilitating correction of the aberration generated by the optical lens 100, and thus facilitating improvement of the imaging quality of the optical lens 100.

[0120] In some embodiments, the optical lens 100 satisfies the relation 1.5 < F5 / CT5 < 2.5, where CT5 is the thickness of the fifth lens L5 on the optical axis. When this relation is satisfied, the refractive power and thickness of the fifth lens L5 can be reasonably configured, so that light can enter the optical lens 100 more gently, reducing the sensitivity of the optical lens 100, facilitating correction of the aberration generated by the optical lens 100, and thus facilitating improvement of the imaging quality of the optical lens 100.

[0121] In some embodiments, the optical lens 100 satisfies the relation -12 < F6 / CT6 < -4, where CT6 is the thickness of the sixth lens L6 on the optical axis. When this relation is satisfied, the refractive power and thickness of the sixth lens L6 can be reasonably configured, so that light can enter the optical lens 100 more gently, reducing the sensitivity of the optical lens 100, facilitating correction of the aberration generated by the optical lens 100, and thus facilitating improvement of the imaging quality of the optical lens 100.

[0122] In some embodiments, the optical lens 100 satisfies the relation 5 < F7 / CT7 < 30, where CT7 is the thickness of the seventh lens L7 on the optical axis. When this relation is satisfied, the refractive power and thickness of the seventh lens L7 can be reasonably configured, so that light can enter the optical lens 100 more gently, reducing the sensitivity of the optical lens 100, facilitating correction of the aberration generated by the optical lens 100, and thus facilitating improvement of the imaging quality of the optical lens 100.

[0123] In some embodiments, the optical lens 100 satisfies the relation 2 < (R1 + R2) / (R1 - R2) < 4, where R1 is the radius of curvature of the object side surface S1 of the first lens L1 on the optical axis, and R2 is the radius of curvature of the image side surface S2 of the first lens L1 on the optical axis. When the optical lens 100 satisfies the relation 2 < (R1 + R2) / (R1 - R2) < 4, the radii of curvature of the object side surface S1 and the image side surface of the first lens L1 near the optical axis can be reasonably controlled, thereby facilitating the control of the shape of the first lens L1, correcting the aberration generated by itself, and improving the imaging quality.

[0124] In some embodiments, the optical lens 100 satisfies the relation 1 < R1 / R2 < 3. When this relation is satisfied, it is beneficial to control the radii of curvature of the object side surface S1 and the image side surface of the first lens L1, so that the surface profiles of the object side surface S1 and the image side surface of the first lens L1 are not overly bent, thereby facilitating the control of the shape of the first lens L1.

[0125] In some embodiments, the optical lens 100 satisfies the relation 1.5 < R4 / R3 < 2, where R4 is the radius of curvature of the image side surface S4 of the second lens L2 near the optical axis, and R3 is the radius of curvature of the object side surface S3 of the second lens L2 near the optical axis. When this relation is satisfied, the radii of curvature of the object side surface S3 and the image side surface of the second lens L2 can be reasonably controlled, so that the surface profiles of the object side surface S3 and the image side surface of the second lens L2 are not overly bent, thereby facilitating the control of the shape of the second lens L2.

[0126] In some embodiments, the optical lens 100 satisfies the relation -4 < R6 / R5 < -1, where R6 is the radius of curvature of the image side surface S6 of the third lens L3 near the optical axis, and R5 is the radius of curvature of the object side surface S5 of the third lens L3 near the optical axis. When this relation is satisfied, the radii of curvature of the object side surface S5 and the image side surface of the third lens L3 can be reasonably controlled, so that the surface profiles of the object side surface S5 and the image side surface of the third lens L3 are not overly bent, thereby facilitating the control of the shape of the third lens L3.

[0127] In some embodiments, the optical lens 100 satisfies the relation |R8 / R7| > 5, where R8 is the radius of curvature of the image side surface S8 of the fourth lens L4 near the optical axis, and R7 is the radius of curvature of the object side surface S7 of the fourth lens L4 near the optical axis. When this relation is satisfied, the radii of curvature of the object side surface S7 and the image side surface of the fourth lens L4 can be reasonably controlled, so that the surface profiles of the object side surface S7 and the image side surface of the fourth lens L4 are not overly bent, thereby facilitating the control of the shape of the fourth lens L4.

[0128] In some embodiments, the optical lens 100 satisfies the relation -0.5 < R10 / R9 < -2, where R10 is the curvature radius of the image side S10 of the fifth lens L5 at the near optical axis, and R9 is the curvature radius of the object side S9 of the fifth lens L5 at the near optical axis. When this relation is satisfied, the curvature radii of the object side S9 and the image side of the fifth lens L5 can be reasonably controlled, so that the surface shapes of the object side S9 and the image side of the fifth lens L5 are not overly bent, which is beneficial to controlling the shape of the fifth lens L5.

[0129] In some embodiments, the optical lens 100 satisfies the relation |R12 / R11| > 5, where R12 is the curvature radius of the image side S12 of the sixth lens L6 at the near optical axis, and R11 is the curvature radius of the object side S11 of the sixth lens L6 at the near optical axis. When this relation is satisfied, the curvature radii of the object side S11 and the image side of the sixth lens L6 can be reasonably controlled, so that the surface shapes of the object side S11 and the image side of the sixth lens L6 are not overly bent, which is beneficial to controlling the shape of the sixth lens L6.

[0130] In some embodiments, the optical lens 100 satisfies the relation 1 < R14 / R13 < 3, where R14 is the curvature radius of the image side S14 of the seventh lens L7 at the near optical axis, and R13 is the curvature radius of the object side S13 of the seventh lens L7 at the near optical axis. When this relation is satisfied, the curvature radii of the object side S13 and the image side of the seventh lens L7 can be reasonably controlled, so that the surface shapes of the object side S13 and the image side of the seventh lens L7 are not overly bent, which is beneficial to controlling the shape of the seventh lens L7.

[0131] In some embodiments, the optical lens 100 satisfies the relation 1.3 < ET1 / CT1 < 1.9, where ET1 is the distance in the direction parallel to the optical axis from the maximum effective semi-aperture of the object side S1 of the first lens L1 to the maximum effective semi-aperture of the image side S2 of the first lens L1 (i.e., the edge thickness of the first lens L1). When the optical lens 100 satisfies the relation 1.3 < ET / CT1 < 1.9, the ratio of the center thickness to the edge thickness of the first lens L1 can be reasonably controlled, so that the overall thickness of the first lens L1 is appropriate, which is beneficial to the miniaturization design of the optical lens 100.

[0132] In some embodiments, the optical lens 100 satisfies the relation 5 < CTMAX / CTMIX < 8, where CTMAX is the maximum thickness on the optical axis among the first lens L1 to the seventh lens L7, and CTMIX is the minimum thickness on the optical axis among the first lens L1 to the seventh lens L7. It can be understood that among the first lens L1 to the seventh lens L7, the lens with the largest thickness on the optical axis is the second lens L2, and the lens with the smallest thickness on the optical axis is the first lens L1. That is to say, the above CTMAX / CTMIX actually defines the ratio of the central thickness of the second lens L2 to the first lens L1. When the optical lens 100 satisfies the relation 5 < CTMAX / CTMIX < 8, the ratio of the maximum central thickness to the minimum central thickness among the first lens L1 to the seventh lens L7 can be reasonably controlled, so as to facilitate the control of the optical power of the first lens L1 and the second lens L2, enabling the aberrations of the first lens L1 and the second lens L2 to compensate each other and reducing the aberrations generated by the optical lens 100.

[0133] In some embodiments, the optical lens 100 satisfies the relation 4 < TTL / CTMAX < 7. When this relation is satisfied, the proportion of the maximum central thickness in the total length of the optical lens 100 can be reasonably configured, making the overall structure of the optical lens 100 compact and facilitating the miniaturization design of the optical lens 100.

[0134] In some embodiments, the fifth lens L5 and the sixth lens L6 form a cemented lens.

[0135] On this basis, the optical lens 100 satisfies the relation:

[0136] VD5 - VD6 > 35, where VD5 is the Abbe number of the fifth lens L5 and VD6 is the Abbe number of the sixth lens L6. When the optical lens 100 satisfies the relation VD5 - VD6 > 35, it is beneficial to select appropriate lens materials, effectively correcting chromatic aberration, avoiding serious purple fringing phenomenon during shooting of the optical lens 100, and being beneficial to improving the shooting imaging clarity and imaging quality of the optical lens 100. Optionally, this relation can further satisfy 40 < VD5 - VD6 < 60, which is further beneficial to improving the imaging quality of the optical lens 100.

[0137] The optical lens 100 satisfies the relation: -30 mm < R10 / (N6 - N5) < -10 mm, where R10 is the radius of curvature of the image side S10 of the fifth lens L5 at the optical axis, N6 is the refractive index of the sixth lens L6, and N5 is the refractive index of the fifth lens L5. When the optical lens 100 satisfies the relation -30 mm < R10 / (N6 - N5) < -10 mm, it is beneficial to select appropriate lens materials, thereby being able to correct chromatic aberration and avoid serious purple fringing phenomena when the optical lens 100 takes pictures, and further being beneficial to improving the imaging clarity of the optical lens 100.

[0138] The optical lens 100 satisfies the relation: 4 < F56 / F < 15, where F56 is the combined focal length of the fifth lens L5 and the sixth lens L6. When the optical lens 100 satisfies the relation 4 < F56 / F < 15, it is possible to reasonably control the refractive powers of the fifth lens L5 and the sixth lens L6, and avoid large aberration problems caused by excessive refractive powers of the fifth lens L5 and the sixth lens L6, thereby being beneficial to improving the imaging quality of the optical lens 100.

[0139] In some embodiments, the optical lens 100 satisfies the relation VD3 > 57.5, where VD3 is the Abbe number of the third lens L3. When this relation is satisfied, it is beneficial to select appropriate lens materials, thereby being able to effectively correct chromatic aberration. Optionally, this relation can further satisfy 60 < VD3 < 65.

[0140] In some embodiments, the optical lens 100 satisfies the relation F * R5 / (N3 - 1) < 295 mm 2 where R5 is the radius of curvature of the object side S5 of the third lens L3 at the optical axis, and N3 is the refractive index of the third lens L3. The optical lens 100 satisfies the relation F * R5 / (N3 - 1) < 295 mm 2 When this is the case, it is possible to select appropriate lens materials, and at the same time, it is also possible to reasonably control the refractive power and the radius of curvature of the third lens L3, so that the third lens L3 can provide appropriate positive refractive power and avoid aberration problems caused by excessive refractive power of the third lens L3. Optionally, this relation can further satisfy 120 mm 2 < F * R5 / (N3 - 1) < 230 mm 2 Thereby being able to further improve the imaging quality of the optical lens 100.

[0141] In some embodiments, the optical lens 100 satisfies the relation SD7 / SD6 > 1, where SD7 is the maximum effective semi-aperture of the object side S7 of the fourth lens L4, and SD6 is the maximum effective semi-aperture of the image side S6 of the third lens L3. When the optical lens 100 satisfies this relation, the maximum effective semi-aperture of the image side S6 of the third lens L3 and the maximum effective semi-aperture of the object side S7 of the fourth lens L4 can be reasonably controlled, so that the gap between the maximum effective semi-apertures of the third lens L3 and the fourth lens L4 is not too large, thereby reducing the step difference between the third lens L3 and the fourth lens L4, making the transition of light between the third lens L3 and the fourth lens L4 smoother, reducing the generated aberration, and thus improving the imaging quality of the optical lens 100. Optionally, the relation may further satisfy 1 < SD7 / SD6 < 1.2, so that the gap between the maximum effective semi-apertures of the third lens L3 and the fourth lens L4 is appropriate, and the step difference between the two is also reasonable, which further helps to reduce the generation of aberration.

[0142] In some embodiments, the optical lens 100 satisfies the relation 1.1 < SD14 / SD1 < 1.2, where SD14 is the maximum effective semi-aperture of the image side S14 of the seventh lens L7, and SD1 is the maximum effective semi-aperture of the object side S1 of the first lens L1. When the optical lens 100 satisfies this relation, the maximum effective semi-apertures of the object side S1 of the first lens L1 and the image side S14 of the seventh lens L7 can be reasonably controlled, which is beneficial to restricting the light path of the optical lens 100, and is beneficial to avoiding a large step difference structure between the first lens L1 and the seventh lens L7, reducing the deflection angle of light, avoiding introducing excessive aberration, being beneficial to improving the imaging quality, and being beneficial to improving the assembly stability of the optical lens 100.

[0143] In some embodiments, the optical lens 100 satisfies the relation 2 < SD1 / IMGH < 2.1. When this relation is satisfied, the maximum effective semi-aperture of the object side S1 of the first lens L1 can be made larger than the size of the imaging surface IMG, so that large-image-surface imaging can be achieved while controlling the head aperture of the optical lens 100.

[0144] The optical lens 100 of this embodiment will be described in detail below in combination with specific parameters.

[0145] First Embodiment

[0146] The structural schematic diagram of the optical lens 100 disclosed in the first embodiment of the present application is as Figure 1 shown. The optical lens 100 includes a first lens L1, a second lens L2, an aperture STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter IR, and a protective glass CG, which are sequentially arranged along the optical axis from the object side to the image side.

[0147] Among them, the first lens L1 has negative refractive power, the second lens L2 has negative refractive power, the third lens L3 has positive refractive power, the fourth lens L4 has positive refractive power, the fifth lens L5 has positive refractive power, the sixth lens L6 has negative refractive power, and the seventh lens L7 has positive refractive power.

[0148] In this embodiment, the object-side surface S1 of the first lens L1 is convex near the optical axis, and the image-side surface S2 of the first lens L1 is concave near the optical axis; the object-side surface S3 of the second lens L2 is concave near the optical axis, and the image-side surface S4 of the second lens L2 is convex near the optical axis; the object-side surface S5 of the third lens L3 is convex near the optical axis, and the image-side surface S6 of the third lens L3 is convex near the optical axis; the object-side surface S7 of the fourth lens L4 is... The image-side surface S8 of the fourth lens L4 is convex near the optical axis; the object-side surface S9 and image-side surface S10 of the fifth lens L5 are both convex near the optical axis; the object-side surface S11 of the sixth lens L6 is concave near the optical axis, and the image-side surface S12 of the sixth lens L6 is also concave near the optical axis; the object-side surface S13 of the seventh lens L7 is convex near the optical axis, and the image-side surface S14 of the seventh lens is concave near the optical axis.

[0149] Specifically, taking the optical lens 100 with a focal length F = 5.1167 mm, an aperture FNO = 1.605, a maximum field of view FOV = 120 degrees as an example, and a total length TTL = 33.0 m as an example, other parameters of the optical lens 100 are given in Table 1 below. The elements along the optical axis of the optical lens 100 from the object side to the image side are arranged sequentially according to the order of the elements in Table 1 from top to bottom. In the same lens, the surface with the smaller surface number is the object side of the lens, and the surface with the larger surface number is the image side of the lens. For example, surface numbers 1 and 2 correspond to the object side S1 and image side S2 of the first lens L1, respectively. The Y-radius in Table 1 is the radius of curvature of the corresponding object side or image side at the optical axis. The first value in the "thickness" parameter column of the lens is the thickness of the lens on the optical axis, and the second value is the distance from the image side of the lens to the next surface on the optical axis. The value of the stop STO in the "Thickness" parameter column represents the distance on the optical axis from the stop STO to the vertex of the next surface (the vertex refers to the intersection of the surface and the optical axis). By default, the direction from the object side of the first lens L1 to the image side of the last lens is the positive direction of the optical axis. When this value is negative, it indicates that the stop STO is set on the image side of the next surface vertex. If the stop STO thickness is positive, the stop STO is on the object side of the next surface vertex. It is understood that the units for the Y-radius, thickness, and focal length in Table 1 are all mm. Furthermore, the refractive index, Abbe number, etc., in Table 1 are obtained at a reference wavelength of 587.6 nm, and the focal length is obtained at a reference wavelength of 546.1 nm.

[0150] In the first embodiment, the object-side surface and image-side surface of the second lens L2 and the sixth lens L6 are both aspherical. Therefore, the surface shape x of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0151]

[0152] Where x is the distance vector from the vertex of the aspherical surface at a height h along the optical axis; c is the curvature of the aspherical surface at the optical axis, c = 1 / Y (i.e., the paraxial curvature c is the reciprocal of the radius of curvature Y in Table 1 above); K is the conic coefficient; Ai is the i-th order correction coefficient of the aspherical surface. Table 2 below gives the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 of the aspherical surfaces of the first lens L1 and the seventh lens L7.

[0153] Table 1

[0154]

[0155] Table 2

[0156]

[0157]

[0158] Please see Figure 2 (A) in the middle Figure 2 Figure (A) shows the spherical aberration curves of the optical lens 100 in the first embodiment at wavelengths of 656.3 nm, 546.1 nm, and 486.1 nm. The horizontal axis along the X-axis represents the focus shift in mm, and the vertical axis along the Y-axis represents the normalized field of view. Figure 2 As can be seen from (A) in the first embodiment, the spherical aberration value of the optical lens 100 is better, indicating that the imaging quality of the optical lens 100 in this embodiment is better.

[0159] Please see Figure 2 (B) in the middle Figure 2 (B) in the figure shows the light astigmatism diagram of the optical lens 100 in the first embodiment at a wavelength of 546.1 nm. The horizontal axis along the X-axis represents the focus shift in mm, and the vertical axis along the Y-axis represents the field of view in degrees. In the astigmatism curve diagram, T represents the curvature of the imaging plane IMG in the meridional direction, and S represents the curvature of the imaging plane IMG in the sagittal direction. Figure 2 As can be seen from (B) in the figure, at this wavelength, the field curvature of the optical lens 100 is small, and the field curvature and astigmatism of each field of view are well corrected. The center and edge of the field of view have clear imaging, that is, the astigmatism of the optical lens 100 is well compensated.

[0160] Please see Figure 2 (C) in the middle, Figure 2 Figure (C) shows the distortion curve of the optical lens 100 in the first embodiment at a wavelength of 546.1 nm. The horizontal axis along the X-axis represents distortion, and the vertical axis along the Y-axis represents the field of view, in degrees (deg). Figure 2 As can be seen from (C), at this wavelength, the image distortion caused by the main beam is small, and the distortion of the optical lens 100 is well corrected.

[0161] Second Embodiment

[0162] The structural schematic diagram of the optical lens 100 disclosed in the second embodiment of this application is shown below. Figure 3 As shown, the optical lens 100 includes a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter IR, and a protective glass CG, arranged sequentially along the optical axis from the object side to the image side.

[0163] In the second embodiment, the refractive power design of the first lens L1 to the seventh lens L7 is the same as that of the first embodiment, and the surface design of the first lens L1 to the seventh lens L7 is also the same as that of the first embodiment, which will not be repeated here.

[0164] Other parameters of the optical lens 100 are given in Table 3 below. The definitions of each parameter can be derived from the description of the foregoing embodiments, and will not be repeated here.

[0165] Table 3

[0166]

[0167]

[0168] In the second embodiment, Table 4 provides the higher-order coefficients that can be used for each aspherical mirror in the second embodiment, wherein each aspherical surface shape can be defined by the formula given in the first embodiment.

[0169] Table 4

[0170]

[0171] Please see Figure 4 ,Depend on Figure 4 As can be seen from (A) the spherical aberration curve, (B) the ray astigmatism curve, and (C) the distortion curve, the spherical aberration, astigmatism, and distortion of the optical lens 100 are all well controlled, thus the optical lens 100 of this embodiment has good imaging quality. Furthermore, regarding... Figure 4 (A) Figure 4 (B) and Figure 4 The wavelengths corresponding to the curves in (C) can be referred to in the first embodiment regarding... Figure 2 (A) Figure 2 (B) Figure 2 The content described in (C) will not be repeated here.

[0172] Third Embodiment

[0173] The structural schematic diagram of the optical lens 100 disclosed in the third embodiment of this application is shown below. Figure 5 As shown, the optical lens 100 includes a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter IR, and a protective glass CG, arranged sequentially along the optical axis from the object side to the image side.

[0174] In this embodiment, the refractive power design of the first lens L1 to the seventh lens L7 is consistent with that of the first embodiment.

[0175] In the surface design of the first lens L1 to the seventh lens L7, except that the image side S12 of the sixth lens L6 is convex near the optical axis, the surface design of the other lenses is the same as that of the first embodiment, and will not be described again here.

[0176] Other parameters of the optical lens 100 are given in Table 5 below. The definitions of each parameter can be derived from the description of the foregoing embodiments, and will not be repeated here.

[0177] Table 5

[0178]

[0179]

[0180] In the third embodiment, Table 6 provides the higher-order coefficients that can be used for each aspherical mirror in the third embodiment, wherein each aspherical surface shape can be defined by the formula given in the first embodiment.

[0181] Table 6

[0182]

[0183] Please see Figure 6 ,Depend on Figure 6 As can be seen from (A) the spherical aberration curve, (B) the ray astigmatism curve, and (C) the distortion curve, the spherical aberration, astigmatism, and distortion of the optical lens 100 are all well controlled, thus the optical lens 100 of this embodiment has good imaging quality. Furthermore, regarding... Figure 6 (A) Figure 6 (B) and Figure 6The wavelengths corresponding to the curves in (C) can be referred to in the first embodiment regarding... Figure 2 (A) Figure 2 (B) Figure 2 The content described in (C) will not be repeated here.

[0184] Fourth embodiment

[0185] The structural schematic diagram of the optical lens 100 disclosed in the fourth embodiment of this application is shown below. Figure 7 As shown, the optical lens 100 includes a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter IR, and a protective glass CG, arranged sequentially along the optical axis from the object side to the image side.

[0186] In this embodiment, the refractive power design of the first lens L1 to the seventh lens L7 is consistent with that of the first embodiment. Regarding the surface design of the first lens L1 to the seventh lens L7, except for the image-side surface S12 of the sixth lens L6 which is convex near the optical axis, the surface design of the other lenses is consistent with that of the first embodiment, and will not be described again here.

[0187] Other parameters of the optical lens 100 are given in Table 7 below. The definitions of each parameter can be derived from the description of the foregoing embodiments, and will not be repeated here.

[0188] Table 7

[0189]

[0190]

[0191] In the fourth embodiment, Table 8 provides the higher-order coefficients that can be used for each aspherical mirror in the fourth embodiment, wherein each aspherical surface shape can be defined by the formula given in the first embodiment.

[0192] Table 8

[0193]

[0194] Please see Figure 8 ,Depend on Figure 8 As can be seen from (A) the spherical aberration curve, (B) the ray astigmatism curve, and (C) the distortion curve, the spherical aberration, astigmatism, and distortion of the optical lens 100 are all well controlled, thus the optical lens 100 of this embodiment has good imaging quality. Furthermore, regarding... Figure 8 (A) Figure 8 (B) and Figure 8 The wavelengths corresponding to the curves in (C) can be referred to in the first embodiment regarding... Figure 2 (A) Figure 2 (B) Figure 2 The content described in (C) will not be repeated here.

[0195] Fifth Embodiment

[0196] The optical lens 100 includes a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter IR, and a protective glass CG, arranged sequentially along the optical axis from the object side to the image side.

[0197] In this embodiment, the refractive power design of the first lens L1 to the seventh lens L7 is consistent with that of the first embodiment.

[0198] In the surface design of the first lens L1 to the seventh lens L7, except that the image side S12 of the sixth lens L6 is convex near the optical axis, the surface design of the other lenses is the same as that of the first embodiment, and will not be described again here.

[0199] The structural schematic diagram of the optical lens 100 disclosed in the fifth embodiment of this application is shown below. Figure 9 As shown, other parameters of the optical lens 100 are given in Table 9 below. The definitions of each parameter can be derived from the description of the foregoing embodiments, and will not be repeated here.

[0200] Table 9

[0201]

[0202] In the fifth embodiment, Table 10 provides the higher-order coefficients that can be used for various aspherical mirrors in the fifth embodiment, wherein each aspherical surface shape can be defined by the formula given in the first embodiment.

[0203] Table 10

[0204]

[0205] Please see Figure 10 ,Depend on Figure 10 As can be seen from (A) the spherical aberration curve, (B) the ray astigmatism curve, and (C) the distortion curve, the spherical aberration, astigmatism, and distortion of the optical lens 100 are all well controlled, thus the optical lens 100 of this embodiment has good imaging quality. Furthermore, regarding... Figure 10 (A) Figure 10 (B) and Figure 10 The wavelengths corresponding to the curves in (C) can be referred to in the first embodiment regarding... Figure 2 (A) Figure 2 (B) Figure 2 The content described in (C) will not be repeated here.

[0206] Sixth Embodiment

[0207] Please see Figure 11 The optical lens 100 includes a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter IR, and a protective glass CG, arranged sequentially along the optical axis from the object side to the image side.

[0208] In this embodiment, the refractive power design of the first lens L1 to the seventh lens L7 is consistent with that of the first embodiment.

[0209] In the surface design of the first lens L1 to the seventh lens L7, except that the image side S12 of the fourth lens is concave near the optical axis, the surface design of the other lenses is the same as that of the first embodiment, and will not be described again here.

[0210] The structural schematic diagram of the optical lens 100 disclosed in the sixth embodiment of this application is shown below. Figure 11 As shown, other parameters of the optical lens 100 are given in Table 11 below. The definitions of each parameter can be derived from the description of the foregoing embodiments, and will not be repeated here.

[0211] Table 11

[0212]

[0213] In the sixth embodiment, Table 12 gives the higher-order coefficients that can be used for each aspherical mirror in the sixth embodiment, wherein each aspherical surface shape can be defined by the formula given in the first embodiment.

[0214] Table 12

[0215]

[0216] Please see Figure 12 ,Depend on Figure 12 As can be seen from (A) the spherical aberration curve, (B) the ray astigmatism curve, and (C) the distortion curve, the spherical aberration, astigmatism, and distortion of the optical lens 100 are all well controlled, thus the optical lens 100 of this embodiment has good imaging quality. Furthermore, regarding... Figure 12 (A) Figure 12 (B) and Figure 12 The wavelengths corresponding to the curves in (C) can be referred to in the first embodiment regarding... Figure 2 (A) Figure 2 (B) Figure 2 The content described in (C) will not be repeated here.

[0217] Seventh Embodiment

[0218] Please see Figure 13 The optical lens 100 includes a first lens L1, a second lens L2, an aperture stop STO, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter IR, and a protective glass CG, arranged sequentially along the optical axis from the object side to the image side.

[0219] In this embodiment, the refractive power design of the first lens L1 to the seventh lens L7 is consistent with that of the first embodiment.

[0220] The surface design of the first lens L1 to the seventh lens L7 is the same as that of the first embodiment, and will not be described again here.

[0221] The structural schematic diagram of the optical lens 100 disclosed in the seventh embodiment of this application is shown below. Figure 13 As shown, other parameters of the optical lens 100 are given in Table 13 below. The definitions of each parameter can be derived from the description of the foregoing embodiments, and will not be repeated here.

[0222] Table 13

[0223]

[0224] In the seventh embodiment, Table 14 provides the higher-order coefficients that can be used for various aspherical mirrors in the seventh embodiment, wherein each aspherical surface shape can be defined by the formula given in the first embodiment.

[0225] Table 14

[0226]

[0227] Please see Figure 14 ,Depend on Figure 14 As can be seen from (A) the spherical aberration curve, (B) the ray astigmatism curve, and (C) the distortion curve, the spherical aberration, astigmatism, and distortion of the optical lens 100 are all well controlled, thus the optical lens 100 of this embodiment has good imaging quality. Furthermore, regarding... Figure 14 (A) Figure 14 (B) and Figure 14 The wavelengths corresponding to the curves in (C) can be referred to in the first embodiment regarding... Figure 2 (A) Figure 2 (B) Figure 2 The content described in (C) will not be repeated here.

[0228] Please refer to Table 15, which summarizes the ratios of the relationships in the first to seventh embodiments of this application.

[0229] Table 15

[0230]

[0231]

[0232] Please see Figure 15 This application also discloses a camera module 200, which includes an image sensor 201 and an optical lens 100 as described in any of the first to fifth embodiments above. The image sensor 201 is disposed on the image side of the optical lens 100. The photosensitive surface of the image sensor 201 is located on the imaging surface (IMG) of the optical lens 100, and light rays from an object passing through the lens and incident on the photosensitive surface can be converted into electrical signals for an image. The image sensor 201 can be a complementary metal-oxide semiconductor (CMOS) or a charge-coupled device (CCD). The camera module 200 can be an imaging module integrated into the terminal device 300 or a standalone lens. It is understood that the camera module 200 with the aforementioned optical lens 100 has all the technical effects of the aforementioned optical lens 100, that is, the camera module 200 can meet the miniaturization design of the optical lens 100 while also taking into account the design requirements of a large field of view. Since the above-mentioned technical effects have been described in detail in the embodiments of optical lens 100, they will not be repeated here.

[0233] This application also discloses a terminal device 300, which includes a housing 301 and the aforementioned camera module 200, with the camera module 200 disposed within the housing 301. The terminal device 300 may include, but is not limited to, mobile phones, tablets, laptops, smartwatches, in-vehicle devices, drones, and surveillance cameras. Please refer to [link / reference]. Figure 16 Taking the terminal device 300 as a mobile phone as an example, the camera module 200 can be set in the housing 301.

[0234] Please see Figure 17 The terminal device 300 can also be a vehicle. In this case, the housing 301 can be a vehicle body, and the camera module 200 can be installed on the vehicle body, for example, inside or outside the vehicle body.

[0235] It is understood that the terminal device 300 with the aforementioned camera module 200 also possesses all the technical effects of the aforementioned optical lens 100. That is, the terminal device 300 can meet the design requirements of miniaturization of the optical lens 100 while also taking into account the design requirements of a large field of view. Since the aforementioned technical effects have been described in detail in the embodiments of the optical lens 100, they will not be repeated here.

[0236] The optical lens, camera module, and terminal device disclosed in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the optical lens, camera module, and terminal device of this application and their core ideas. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An optical lens, characterized in that, There are a total of seven lenses with refractive power, including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens arranged in sequence from the object side to the image side along the optical axis; The first lens has negative refractive power, the object side surface of the first lens is convex near the optical axis, and the image side surface of the first lens is concave near the optical axis; The second lens has negative refractive power, the object side surface of the second lens is concave near the optical axis, and the image side surface of the second lens is convex near the optical axis; The third lens has positive refractive power, and both the object side surface and the image side surface of the third lens are convex near the optical axis; The fourth lens has positive refractive power, and the object side surface of the fourth lens is convex near the optical axis; The fifth lens has positive refractive power, and both the object side surface and the image side surface of the fifth lens are convex near the optical axis; The sixth lens has negative refractive power, and the object side surface of the sixth lens is concave near the optical axis; The seventh lens has positive refractive power, the object side surface of the seventh lens is convex near the optical axis, and the image side surface of the seventh lens is concave near the optical axis; The optical lens satisfies the following relational expressions: 115deg ≤ FOV ≤ 125deg, 5 < TTL / F < 7, and 1 < CT2 / F < 1.5; Where, FOV is the maximum field angle of the optical lens, 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, F is the focal length of the optical lens, and CT2 is the thickness of the second lens on the optical axis.

2. The optical lens according to claim 1, characterized in that, The optical lens satisfies the following relational expressions: 1.2 < F / IMGH < 1.5, and / or, 2 < F * tan(FOV / 2) / IMGH < 2.5, and / or, 0.9 < ASAGS1 / SAGS1 < 4; Where, IMGH is half of the image height corresponding to the maximum field angle of the optical lens, tan(FOV / 2) is the tangent value of half of the maximum field angle of the optical lens, ASAGS1 is the sag amount of the paraxial curvature radius of the object side surface of the first lens, and SAGS1 is the distance in the optical axis direction from the intersection of the object side surface of the first lens and the optical axis at the maximum effective semi-aperture of the object side surface of the first lens.

3. The optical lens according to claim 1, characterized in that, The optical lens satisfies the following relational expressions: 3 < TTL / L1ST / < 4, and / or, -3 < SAGS2 / SAGS3 < -1.5, and / or, CT45 / CT34 > 20; Where, L1ST is the distance on the optical axis from the object side surface of the first lens to the aperture stop of the optical lens, SAGS2 is the distance in the optical axis direction from the intersection of the object side surface of the first lens and the optical axis at the maximum effective semi-aperture of the image side surface of the first lens, CT45 is the distance on the optical axis from the image side surface of the fourth lens to the object side surface of the fifth lens, CT34 is the distance on the optical axis from the image side surface of the third lens to the object side surface of the fourth lens, and SAGS3 is the distance in the optical axis direction from the intersection of the object side surface of the second lens and the optical axis at the maximum effective semi-aperture of the object side surface of the second lens.

4. The optical lens according to claim 1, characterized in that, The optical lens satisfies the following relationships: 1.5 < F34 / F < 2.5, and / or, F7 / F > 4, and / or, 1.5 < F / BFL < 2; where F34 is the combined focal length of the third lens and the fourth lens, F7 is the focal length of the seventh lens, and BFL is the distance from the image side of the seventh lens to the imaging surface of the optical lens on the optical axis.

5. The optical lens according to claim 1, characterized in that, The optical lens satisfies the following relationships: 2 < (R1 + R2) / (R1 - R2) < 4, and / or, 1.3 < ET1 / CT1 < 1.9, and / or, -10 < F1 / CT1 < -5; where R1 is the curvature radius of the object side of the first lens on the optical axis, R2 is the curvature radius of the image side of the first lens on the optical axis, ET1 is the distance in the direction parallel to the optical axis from the maximum effective semi-aperture of the object side of the first lens to the maximum effective semi-aperture of the image side of the first lens, CT1 is the thickness of the first lens on the optical axis, and F1 is the focal length of the first lens.

6. The optical lens according to claim 1, characterized in that, The optical lens satisfies the following relationships: 5 < CTMAX / CTMIX < 8, and / or, 4 < TTL / CTMAX < 7; where CTMAX is the maximum thickness on the optical axis among the first lens to the seventh lens, and CTMIX is the minimum thickness on the optical axis among the first lens to the seventh lens.

7. The optical lens according to claim 1, characterized in that, The fifth lens and the sixth lens form a cemented lens, and the optical lens satisfies the following relationships: VD5 - VD6 > 35, and / or, -30 mm < R10 / (N6 - N5) < -10 mm, and / or, 4 < F56 / F < 15; where VD5 is the Abbe number of the fifth lens, VD6 is the Abbe number of the sixth lens, R10 is the curvature radius of the image side of the fifth lens on the optical axis, N6 is the refractive index of the sixth lens, N5 is the refractive index of the fifth lens, and F56 is the combined focal length of the fifth lens and the sixth lens.

8. The optical lens according to claim 1, characterized in that, The optical lens satisfies the following relationships: F*R5 / (N3 - 1) < 295 mm 2 , and / or, 70 deg < FOV / FNO < 80 deg, and / or, 140 deg < FOV*F / IMGH < 180 deg; where R5 is the curvature radius of the object side of the third lens on the optical axis, N3 is the refractive index of the third lens, FNO is the aperture number of the optical lens, and IMGH is half of the image height corresponding to the maximum field angle of the optical lens.

9. A camera module, characterized in that, The imaging module includes an image sensor and the optical lens according to any one of claims 1-8, and the image sensor is disposed on the image side of the optical lens.

10. A terminal device, characterized in that, It includes a housing and the imaging module according to claim 9, and the imaging module is disposed in the housing.

Images