Optical lens, camera module and electronic equipment

Abstract

The invention relates to the field of optical lenses, in particular to an optical lens, a camera module and electronic equipment. Wherein the optical lens comprises a first lens group, a second lens group and a third lens group which are sequentially arranged from an object side to an image side, and the effective aperture DSn of at least one lens in the second lens group and the entrance pupil diameter EPD of the optical lens meet the condition that 2.5 > DSn / EPDgt; 1.1, the first lens, close to the object side, in the first lens group has negative focal power, and the Abbe number Vd1 of the first lens satisfies Vd1gt; 40). On the basis of the scheme, aberration can be greatly reduced, and the imaging quality can be improved.

Description

Technical Field

[0001] The present application relates to the field of optical lenses, and in particular to an optical lens, a camera module and an electronic device. Background Art

[0002] In recent years, with the development of terminal device technology, the shooting function has become a must-have function for many intelligent terminal devices (such as smart phones), and the lens that realizes the shooting function has become one of the essential components of the terminal devices. With the increasing demand for taking pictures in intelligent terminal devices, how to improve the image quality through lens design is a technical problem that needs to be solved at present. Summary of the invention

[0003] In order to improve imaging quality, the embodiments of the present application provide an optical lens, a camera module and an electronic device.

[0004] In a first aspect, an embodiment of the present application provides an optical lens, which includes a first lens group, a second lens group, and a third lens group arranged in sequence from the object side to the image side; there is an effective aperture DSn of at least one lens in the second lens group and an entrance pupil diameter EPD of the optical lens satisfying 2.5>DSn / EPD>1.1; the first lens close to the object side in the first lens group has a negative optical focal length, and the Abbe number Vd1 of the first lens satisfies Vd1>40.

[0005] It can be understood that the lenses of the second lens group are lenses that play a core converging role in the process of light propagation. The present application sets the effective aperture DSn of at least one lens in the second lens group and the entrance pupil diameter EPD of the optical lens to satisfy a large range of 2.5>DSn / EPD>1.1, that is, at least one lens is used to effectively reduce the incident angle of light, improve the converging effect, and effectively reduce astigmatism, thereby being able to significantly correct aberrations and improve imaging quality.

[0006] In addition, in the embodiment of the present application, the first lens close to the object side in the first lens group can be set to have negative optical focal length, and the Abbe number Vd1 of the first lens satisfies Vd1>40. It can be understood that the larger the Abbe number, the milder the dispersion, so it can effectively reduce the dispersion, thereby reducing the aberration and further improving the imaging quality.

[0007] In a possible implementation of the first aspect, the first lens group includes two lenses, the second lens group includes two lenses, and the third lens group includes one lens.

[0008] That is, in the embodiment of the present application, a reasonable number of lenses can be set for each lens group. In some embodiments, the third lens group can also include two lenses or three lenses.

[0009] In a possible implementation of the first aspect, a lens height TTL of the optical lens and a focal length EFL of the optical lens satisfy TTL / EFL>2.

[0010] That is, in the embodiment of the present application, the above-mentioned setting of the lens height TTL and the focal length EFL of the optical lens to satisfy TTL / EFL>2 can achieve setting a reasonable physical length of the lens, so that the lens length is sufficient to place the lens for correcting aberrations.

[0011] In a possible implementation of the first aspect, at least one lens in the second lens group has an object-side sag height SOn and an image-side sag height SIn that satisfy SOn / SIn<1.

[0012] That is, in the embodiment of the present application, by limiting the ratio of the object-side sagittal height to the image-side sagittal height of at least one lens in the second lens group, the astigmatism in the aberration can be effectively corrected.

[0013] In a possible implementation of the first aspect, an effective aperture DS1 of the first lens and an effective aperture DSi of the i-th lens closest to the image side in the third lens group satisfy 5>DS1 / DSi>0.5.

[0014] That is, in the embodiment of the present application, by limiting the ratio of the effective aperture of the first lens to the effective aperture of the last lens, when the ratio of the effective aperture of the first lens to the effective aperture of the last lens is within a preset range, the field curvature in the aberration can be effectively corrected.

[0015] In a possible implementation of the first aspect, an effective aperture DSi of the i-th lens closest to the image side in the third lens group and an image height ImgH of the optical lens satisfy 2>DSi / ImgH>0.5.

[0016] That is, in the embodiment of the present application, by limiting the ratio of the effective aperture of the last lens to the image height of the optical lens, when the ratio of the effective aperture of the last lens to the image height of the optical lens is within a preset range, the field curvature in the aberration can be effectively corrected.

[0017] In a possible implementation of the first aspect above, the optical lens includes at least two first preset lenses, and the Abbe number of the first preset lenses is less than 30.

[0018] That is, in the embodiment of the present application, chromatic aberration can be eliminated by setting a low Abbe number lens in combination with a high Abbe number lens.

[0019] In a possible implementation of the first aspect above, the optical lens includes multiple second preset lenses, the Abbe number of the second preset lenses is higher than 55, and the thickness CTH of at least one second preset lens and the thickness CTL of at least one first preset lens satisfy 15>CTH / CTL>1.1.

[0020] That is, in the embodiment of the present application, by limiting the thickness ratio of the high Abbe number lens and the low Abbe number lens, when the thickness ratio is within a preset range, chromatic aberration in aberration can be effectively corrected.

[0021] In a possible implementation of the first aspect, the effective aperture DS1 of the first lens and the focal length EFL of the optical lens satisfy 16>DS1 / EFL>1.5.

[0022] That is, in the embodiment of the present application, by limiting the ratio of the effective aperture of the first lens to the focal length of the optical lens, the opening size required for the optical lens can be reduced.

[0023] In a possible implementation of the first aspect above, an effective aperture DS1 of the first lens and a half field of view HFOV of the optical lens satisfy 25>DS1+2*tan(HFOV)>3.

[0024] That is, in the embodiment of the present application, by limiting the mathematical relationship between the effective aperture of the first lens and the half field angle of the optical lens, the aperture size required for the optical lens can be reduced.

[0025] In a possible implementation of the first aspect, the image side sag height SI1 of the first lens and the object side inflection point sag height SOC1 of the first lens satisfy SI1 / SOC1>2.

[0026] That is, in the embodiment of the present application, by limiting the ratio of the image side sag height of the first lens to the object side inflection point sag height of the first lens, the optical lens can adopt an aspherical surface type, and the lens height of the optical lens can be reduced.

[0027] In a possible implementation of the first aspect, a half field of view HFOV of the optical lens satisfies 85°>HFOV>45°.

[0028] That is, in the embodiment of the present application, when the half field angle of the optical lens meets the above range, a wide angle or an ultra-wide angle can be achieved.

[0029] In a possible implementation of the first aspect above, the aperture value F of the optical lens satisfies F<1.9.

[0030] That is, in the embodiment of the present application, when the aperture value of the optical lens satisfies the above range, a large aperture can be achieved.

[0031] In a second aspect, an embodiment of the present application provides a camera module, comprising a photosensitive element and the optical lens of the first aspect, wherein the photosensitive element is located on the image side of the optical lens, and the optical lens is used to image light onto the photosensitive element.

[0032] In a third aspect, an embodiment of the present application provides an electronic device, comprising the camera module of the second aspect described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 According to the present application, a schematic diagram of the back side of an electronic device is shown;

[0035] Figure 2 According to an embodiment of the present application, a structural schematic diagram of a camera module is shown;

[0036] Figure 3A According to the first embodiment of the present application, a structural schematic diagram of a camera module is shown;

[0037] Figure 3B According to the first embodiment of the present application, a schematic diagram of chromatic aberration correction performance of an optical lens is shown;

[0038] Figure 3C According to the first embodiment of the present application, a schematic diagram of astigmatism correction performance of an optical lens is shown;

[0039] Figure 3D According to the first embodiment of the present application, a schematic diagram of the distortion correction performance of an optical lens is shown;

[0040] Figure 4A According to the second embodiment of the present application, a structural schematic diagram of a camera module is shown;

[0041] Figure 4B According to the second embodiment of the present application, a schematic diagram of chromatic aberration correction performance of an optical lens is shown;

[0042] Figure 4C According to the second embodiment of the present application, a schematic diagram of astigmatism correction performance of an optical lens is shown;

[0043] Figure 4D According to the second embodiment of the present application, a schematic diagram of the distortion correction performance of an optical lens is shown;

[0044] Figure 5A According to the third embodiment of the present application, a structural schematic diagram of a camera module is shown;

[0045] Figure 5BAccording to the third embodiment of the present application, a schematic diagram of chromatic aberration correction performance of an optical lens is shown;

[0046] Figure 5C According to the third embodiment of the present application, a schematic diagram of astigmatism correction performance of an optical lens is shown;

[0047] Figure 5D According to the third embodiment of the present application, a schematic diagram of the distortion correction performance of an optical lens is shown;

[0048] Fig. 6A According to the fourth embodiment of the present application, a structural schematic diagram of a camera module is shown;

[0049] Figure 6B According to the fourth embodiment of the present application, a schematic diagram of chromatic aberration correction performance of an optical lens is shown;

[0050] Figure 6C According to the fourth embodiment of the present application, a schematic diagram of astigmatism correction performance of an optical lens is shown;

[0051] Fig.6D According to the fourth embodiment of the present application, a schematic diagram of the distortion correction performance of an optical lens is shown;

[0052] Fig. 7A According to the fifth embodiment of the present application, a structural schematic diagram of a camera module is shown;

[0053] Figure 7B According to the fifth embodiment of the present application, a schematic diagram of chromatic aberration correction performance of an optical lens is shown;

[0054] Figure 7C According to the fifth embodiment of the present application, a schematic diagram of astigmatism correction performance of an optical lens is shown;

[0055] Fig.7D According to the fifth embodiment of the present application, a schematic diagram of the distortion correction performance of an optical lens is shown;

[0056] Fig. 8A According to the sixth embodiment of the present application, a structural schematic diagram of a camera module is shown;

[0057] Figure 8B According to the sixth embodiment of the present application, a schematic diagram of chromatic aberration correction performance of an optical lens is shown;

[0058] Figure 8C According to the sixth embodiment of the present application, a schematic diagram of astigmatism correction performance of an optical lens is shown;

[0059] Fig.8D According to the sixth embodiment of the present application, a schematic diagram of the distortion correction performance of an optical lens is shown;

[0060] Fig.9A According to the seventh embodiment of the present application, a structural schematic diagram of a camera module is shown;

[0061] Fig. 9B According to the seventh embodiment of the present application, a schematic diagram of chromatic aberration correction performance of an optical lens is shown;

[0062] Fig. 9C According to the seventh embodiment of the present application, a schematic diagram of astigmatism correction performance of an optical lens is shown;

[0063] Fig.9D According to the seventh embodiment of the present application, a schematic diagram of the distortion correction performance of an optical lens is shown. DETAILED DESCRIPTION

[0064] For ease of understanding, the technical terms involved in this application are explained and described below.

[0065] Focal length, also known as focal length, refers to the distance from the image-side principal surface of a lens or lens group to the image-side focal plane along the optical axis when an object forms a clear image in the image-side space through a lens or lens group.

[0066] Aperture value, also known as F number (FNO), is the relative value obtained by the focal length of the lens / lens entrance pupil diameter (the inverse of the relative aperture). The smaller the aperture value, the more light enters in the same unit time. The smaller the aperture value, the smaller the depth of field, and the background content of the photo will be blurred.

[0067] The total track length (TTL) refers to the total length from the object side of the optical lens closest to the object side to the imaging surface, and is the main factor in determining the height of the camera.

[0068] The dispersion coefficient, also known as the Abbe number, is an index used to represent the dispersion ability of a transparent medium. Generally speaking, the larger the refractive index of the medium, the smaller the Abbe number, and the more severe the dispersion; conversely, the smaller the refractive index of the medium, the larger the Abbe number, and the milder the dispersion.

[0069] The object side, with the lens as the boundary, is the side where the scene to be imaged is located.

[0070] The image side is the side where the image of the scene to be imaged is located, with the lens as the boundary.

[0071] Image height (ImgH) is half the diagonal length of the effective pixel area on the photosensitive chip, that is, the image height of the imaging surface.

[0072] Entrance Pupil Diameter (EPD) refers to the ratio of the focal length of an optical lens to its aperture F value.

[0073] Effective aperture, the maximum effective diameter of the lens, that is, the maximum diameter of light passing through the lens.

[0074] In optical instruments, the angle of view (FOV) is the angle formed by the two edges of the maximum range of the image of the object to be measured that can pass through the lens, with the lens of the optical instrument as the vertex. The size of the field of view angle determines the field of view of the optical instrument. The larger the field of view angle, the larger the field of view and the smaller the optical magnification.

[0075] Half field of view (HFOV), half of the field of view.

[0076] Sagitta is the vertical distance between the geometric center of the surface and the diameter plane corresponding to the surface.

[0077] Aberration refers to the deviation between the imaging result in the actual optical system and the ideal imaging condition. Aberrations include field curvature, astigmatism, distortion, chromatic aberration, etc.

[0078] The technical solutions in the embodiments of the present application will be described clearly and in detail below with reference to the accompanying drawings.

[0079] See also Figure 1 , Figure 1 1 is a schematic diagram of the back of an electronic device shown in the present application. The electronic device 100 may be a mobile phone, a digital tablet, a laptop, a video camera, a video recorder, a camera, a smart TV, a network monitoring device, a somatosensory game console, a driving recorder, a reversing imaging device, a wearable electronic device, a small drone, a three-dimensional image capture device, or other devices with photo or video functions. The electronic device 100 is described below by taking a mobile phone as an example.

[0080] The electronic device 100 includes a camera module 1, an image processor 2 and a housing 3. The housing 3 is provided with a light hole 31. The light incident side of the camera module 1 is arranged opposite to the light hole 31 of the housing 3. The camera module includes an optical lens 10. For the convenience of illustration, the optical lens 10 is not shown. Figure 1 The lens camera module 1 and the image processor 2 are both arranged inside the housing 3. The image processor 2 is connected to the camera module 1 for communication. The camera module 1 is used to obtain image data and input the image data into the image processor 2. The image processor 2 is used to process the image data output therein. It should be noted that Figure 1 It is only a schematic diagram of the structure of the implementation mode of the present application, and the structures of the camera module 1, image processor 2 and housing 3 shown therein are only for illustration.

[0081] The image processor 2 can be a separate image processing chip or a digital signal processing chip (DSP), which is used to promptly and quickly transmit the data obtained by the photosensitive element of the camera module 1 to the central processor and refresh the photosensitive element. The image processor 2 can also be integrated into other chips (such as a central processing chip).

[0082] Figure 1 In the illustrated embodiment, the camera module 1 is disposed on the back of the electronic device 100 and serves as the rear lens of the electronic device 100. It is understood that in some embodiments, the camera module 1 may also be disposed on the front of the electronic device 100 and serve as the front lens of the electronic device 100. Both the front lens and the rear lens may be used for self-portraits or for the photographer to take photos of other objects. It should be understood that Figure 1 The installation position of the camera module 1 of the electronic device 100 in the illustrated embodiment is merely illustrative. In some other embodiments, the camera module 1 may also be installed at other positions on the electronic device 100, such as on a component that is movable or rotatable relative to the electronic device 100.

[0083] At present, as the requirements for shooting quality gradually increase, how to improve the image quality is a technical problem that needs to be solved.

[0084] The embodiment of the present application proposes an optical lens, a camera module and an electronic device, wherein the optical lens 10 includes a first lens group, a second lens group and a third lens group arranged in sequence from the object side to the image side; the effective aperture DSn of at least one lens in the second lens group and the entrance pupil diameter EPD of the optical lens satisfy 2.5>DSn / EPD>1.1. It can be understood that the lens of the second lens group is a lens that plays a core convergence role in the process of light propagation. The present application sets the effective aperture DSn of at least one lens in the second lens group and the entrance pupil diameter EPD of the optical lens to satisfy a larger range of 2.5>DSn / EPD>1.1, that is, at least one lens is used to effectively reduce the incident angle of light, improve the convergence effect, and effectively reduce astigmatism, thereby being able to significantly correct aberrations and improve imaging quality.

[0085] In addition, in the embodiment of the present application, the first lens close to the object side in the first lens group can be set to have negative optical focal length, and the Abbe number Vd1 of the first lens satisfies Vd1>40. It can be understood that the larger the Abbe number, the milder the dispersion, so it can effectively reduce the dispersion, thereby reducing the aberration and further improving the imaging quality.

[0086] The structure of the camera module 1 and the setting of related optical parameters are described in detail below with reference to the accompanying drawings.

[0087] refer to Figure 2The camera module 1 includes an optical lens 10 and a photosensitive element 20. The light of the scene forms a clear image on the imaging surface through the optical lens 10, and the image of the scene is recorded by the photosensitive element 20 located on the imaging surface. Among them, the imaging surface refers to the plane where the image is located after the scene is imaged by the optical lens 10. The optical lens 10 includes a plurality of lenses arranged in sequence from the object side to the image side, and an image with a better imaging effect is formed by the cooperation of each lens. Among them, the object side refers to the side where the photographed scene is located, and the image side refers to the side where the imaging plane is located.

[0088] The camera module 1 may further include an infrared filter 30, which may be fixed on the circuit board and located between the optical lens 10 and the photosensitive element 20. It is understood that the light from the optical lens 10 is irradiated onto the infrared filter 30 and transmitted to the photosensitive element 20 through the infrared filter 30.

[0089] The optical lens 10 includes a first lens group, a second lens group and a third lens group. Optionally, the first lens group may include two lenses, the second lens group may also include two lenses, and the third lens group may also include three lenses. Figure 2 As shown, the first lens group may include a first lens L1 and a second lens L2, the second lens group may include a third lens L3 and a fourth lens L4, and the third lens group may include a fifth lens L5, a sixth lens L6 and a seventh lens L7.

[0090] In some other optional embodiments, the first lens group may include two lenses, the second lens group may also include three lenses, and the third lens group may also include two lenses. Specifically, the first lens group includes a first lens L1 and a second lens L2, the second lens group includes a third lens L3, a fourth lens L4, and a fifth lens L5, and the third lens group includes a sixth lens L6 and a seventh lens L7.

[0091] In some other optional embodiments, the first lens group may include two lenses, the second lens group may include two lenses, and the third lens group may include one lens.

[0092] In some other optional embodiments, the first lens group may include two lenses, the second lens group may include two lenses, and the third lens group may include two lenses.

[0093] In some other optional embodiments, the first lens group may include two lenses, the second lens group may include three lenses, and the third lens group may include one lens.

[0094] It can be understood that the above-mentioned configuration of each lens group is only an exemplary description and can be configured in other forms according to actual needs.

[0095] According to some embodiments, the optical lens 10 satisfies the following relationship:

[0096] 2.5>DSn / EPD>1.1;

[0097] Where DSn is the effective aperture of at least one lens in the second lens group, refer to Figure 2 , EPD is the entrance pupil diameter of the optical lens 10.

[0098] In the embodiment of the present application, the second lens group plays a core convergence role. The present application limits the ratio of the effective aperture to the entrance pupil diameter of at least one lens in the second lens group. When the ratio of the effective aperture to the entrance pupil diameter meets the above conditions, the aberration can be greatly reduced, and the imaging quality of the optical lens 10 can be greatly improved. For example, the above ratio can be 2.4, 2.2, 2.0, 1.8, 1.6, 1.4, 1.2, etc. It can be understood that for an ultra-wide-angle large aperture lens, the larger the ratio of the effective aperture to the entrance pupil diameter of the lens that plays a core convergence role, the better the imaging effect.

[0099] According to some embodiments, the optical lens 10 satisfies the following relationship:

[0100] Vd1>40,

[0101] Wherein, Vd1 is the Abbe number of the first lens L1 close to the object side in the first lens group, and the first lens L1 has negative refractive power.

[0102] In the embodiment of the present application, by limiting the Abbe number of the first lens L1 and limiting the first lens L1 to have a negative optical power, the first lens L1 can be made to diverge light, increase the field angle of the first lens L1, and realize that the optical lens 10 is a wide-angle lens. For example, the Abbe number of the first lens L1 can be 40, 50, etc.

[0103] According to some embodiments, the optical lens 10 satisfies the following relationship:

[0104] TTL / EFL>2;

[0105] Among them, reference Figure 2 , TTL is the lens height of the optical lens 10 , and EFL is the focal length of the optical lens 10 .

[0106] In the embodiment of the present application, by limiting the ratio of lens height to focal length, the optical lens 10 can have a reasonable physical length, which is sufficient to place the lens for correcting aberrations, and the length is not too long. For example, the above arrangement can be 2.1, 2.2, 2.3, etc.

[0107] According to some embodiments, the optical lens 10 satisfies the following relationship:

[0108] SOn / SIn<1;

[0109] Wherein, SOn is the object-side sag height of at least one lens in the second lens group, and SIn is the image-side sag height Sin of the at least one lens.

[0110] In the embodiment of the present application, by limiting the ratio of the object-side sag height to the image-side sag height of at least one lens in the second lens group, the astigmatism in the aberration can be effectively corrected. For example, the above ratio can be 0.9, 0.8, etc.

[0111] According to some embodiments, the optical lens 10 satisfies the following relationship:

[0112] 5>DS1 / DSi>0.5;

[0113] DS1 is the effective aperture of the first lens L1, and DSi is the effective aperture of the i-th lens closest to the image side in the third lens group.

[0114] In the embodiment of the present application, by limiting the ratio of the effective aperture of the first lens L1 to the effective aperture of the last lens, when the ratio of the effective aperture of the first lens L1 to the effective aperture of the last lens is within a preset range, the field curvature in the aberration can be effectively corrected. For example, the above ratio can be 0.6, 0.7, 0.8, 0.9, 1.0, 2.0, 3.0, 4.0, 4.5, 4.9, etc.

[0115] According to some embodiments, the optical lens 10 satisfies the following relationship:

[0116] 2>DSi / ImgH>0.5,

[0117] Wherein, DSi is the effective aperture of the i-th lens closest to the image side in the third lens group, and ImgH is the image height of the optical lens 10.

[0118] In the embodiment of the present application, by limiting the ratio of the effective aperture of the last lens to the image height of the optical lens 10, when the ratio of the effective aperture of the last lens to the image height of the optical lens 10 is within a preset range, the field curvature in the aberration can be effectively corrected. For example, the above ratio can be 1.9, 1.8, 1.7, 1.5, 1.0, 0.9, 0.8, 0.7, 0.6, etc.

[0119] According to some embodiments, the optical lens 10 satisfies the following relationship:

[0120] 15>CTH / CTL>1.1,

[0121] The optical lens 10 includes at least two first preset lenses with an Abbe number lower than 30 and multiple second preset lenses with an Abbe number higher than 55. CTH is the thickness of at least one second preset lens, and CTL is the thickness of at least one first preset lens.

[0122] In the embodiment of the present application, by limiting the thickness ratio of the high Abbe number lens and the low Abbe number lens, when the thickness ratio is within a preset range, the chromatic aberration in the aberration can be effectively corrected. For example, the above ratio can be 14.9, 14.5, 14, 13, 12, 11, 10, 5, 3, 2, 1.5, 1.2, etc.

[0123] According to some embodiments, the optical lens 10 satisfies the following relationship:

[0124] 16>DS1 / EFL>1.5,

[0125] Wherein, DS1 is the effective aperture of the first lens L1, and EFL is the focal length of the optical lens 10.

[0126] In the embodiment of the present application, by limiting the ratio of the effective aperture of the first lens L1 to the focal length of the optical lens 10, when the ratio of the effective aperture of the first lens L1 to the focal length of the optical lens 10 is within a preset range, the opening size of the electronic device 100 corresponding to the optical lens 10 can be reduced. For example, the above ratio can be 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1.8, 1.6, etc.

[0127] According to some embodiments, the optical lens 10 satisfies the following relationship:

[0128] 25>DS1+2*tan(HFOV)>3,

[0129] Wherein, DS1 is the effective aperture of the first lens L1, and HFOV is the half field of view angle of the optical lens 10.

[0130] In the embodiment of the present application, by limiting the mathematical relationship between the effective aperture of the first lens L1 and the half field angle of the optical lens 10, the opening size of the electronic device 100 corresponding to the optical lens 10 can be reduced. For example, the above expression can be 24, 23, 22, 21, 20, 15, 10, 5, 4, 3.5, 3.1, etc.

[0131] According to some embodiments, the optical lens 10 satisfies the following relationship:

[0132] SI1 / SOC1>2;

[0133] Among them, SI1 is the image side sag of the first lens L1, and SOC1 is the object side inflection point sag of the first lens L1.

[0134] In the embodiment of the present application, by limiting the ratio of the image side sag height of the first lens L1 to the object side inflection point sag height of the first lens L1, when the ratio of the image side sag height of the first lens L1 to the object side inflection point sag height of the first lens L1 is greater than 2, the optical lens 10 can adopt an aspherical surface type, thereby reducing the lens height of the optical lens 10. For example, the above ratio can be 2.1, 2.2, 2.3, 2.4, 2.5, 3, etc.

[0135] According to some embodiments, the optical lens 10 satisfies the following relationship:

[0136] 85°>HFOV>45°,

[0137] Here, HFOV is the half field of view of the optical lens 10 .

[0138] In the embodiment of the present application, when the half-viewing angle of the optical lens 10 meets the above range, a wide angle or an ultra-wide angle can be achieved. For example, the half-viewing angle can be 84°, 80°, 70°, 55°, 50°, 46°, etc.

[0139] According to some embodiments, the optical lens 10 satisfies the following relationship:

[0140] F<1.9,

[0141] Wherein, F is the aperture value of the optical lens 10 .

[0142] In the embodiment of the present application, when the aperture value of the optical lens 10 meets the above range, a large aperture can be achieved. For example, the aperture value can be 1.8, 1.7, 1.6, 1.5, 1.4, 1.3, 1.2, 1.1, 1.0, etc.

[0143] This embodiment sets the parameters of each lens and coordinates the parameters between the lenses so that the optical lens 10 can fully correct the aberration on the basis of having wide-angle and large aperture characteristics, so that the optical lens 10 has a better imaging effect and reduces the opening size of the electronic device 100.

[0144] It is understandable that the above-mentioned different restrictions on different parameters of the optical lens can exist independently of each other or can be combined with each other. When all the above-mentioned limiting values ​​are combined with each other, the optical lens can have a better size or can obtain better imaging quality.

[0145] Understandably, Figure 2 Only some components of the camera module 1 are schematically shown, and the actual shape, size and structure of these components are not subject to Figure 2 limited.

[0146] Figure 3AThe diagram shows the structure of the camera module 1 according to the first embodiment of the present application.

[0147] In the first embodiment, the optical lens 10 includes an aperture and seven lenses. Specifically, a first lens group, a second lens group, and a third lens group are sequentially arranged from the object side to the image side, wherein the first lens group includes a first lens L1 and a second lens L2, the second lens group includes a third lens L3, a fourth lens L4, and a fifth lens L5, and the third lens group includes a sixth lens L6 and a seventh lens L7.

[0148] In the embodiment of the present application, the object side surface of the first lens L1 is concave near the optical axis, and the image side surface is concave near the optical axis. The object side surface of the second lens L2 is convex near the optical axis, and the image side surface is concave near the optical axis.

[0149] The object side surface of the third lens L3 is convex near the optical axis, and the image side surface is convex near the optical axis. The object side surface of the fourth lens L4 is convex near the optical axis, and the image side surface is concave near the optical axis. The object side surface of the fifth lens L5 is convex near the optical axis, and the image side surface is convex near the optical axis. The effective aperture DSn of the third lens L3, the fourth lens L4, and the fifth lens L5 in the second lens group and the entrance pupil diameter EPD of the optical lens 10 satisfy 2.5>DSn / EPD>1.1. Specifically, DS3 / EPD is 1.89, DS4 / EPD is 1.69, and DS5 / EPD is 1.84. It can be understood that DSn represents the effective aperture of the nth lens. For example, DS3 can represent the effective aperture of the third lens L3, and the effective apertures of other lenses are similar. It can be understood that the second lens group plays a core convergence role, which can greatly reduce aberrations and greatly improve the imaging quality of the optical lens 10.

[0150] The object side surface of the sixth lens L6 is concave near the optical axis, and the image side surface is convex near the optical axis. The object side surface of the seventh lens L7 is convex near the optical axis, and the image side surface is concave near the optical axis. The effective aperture DS1 of the first lens L1 and the effective aperture DS7 of the seventh lens L7 satisfy DS1 / DS7 of 1.02, which can effectively correct the field curvature in the aberration. The effective aperture DS7 of the seventh lens L7 and the image height ImgH of the optical lens 10 satisfy DS7 / ImgH of 1.85, which can effectively correct the field curvature in the aberration.

[0151] In the embodiment of the present application, the Abbe number of the first preset lens is 19.4, and it includes the second lens L2, the fourth lens L4, and the sixth lens L6; the Abbe number of the second preset lens is 56, and it includes the first lens L1, the third lens L3, the fifth lens L5, and the seventh lens L7. Among them, the ratio of the thickness CTH of any lens of the first lens L1, the third lens L3, the fifth lens L5, and the seventh lens L7 to the thickness CTL of any lens of the fourth lens L4 and the sixth lens L6 satisfies 15>CTH / CTL>1.1, which can effectively correct the chromatic aberration in the aberration.

[0152] According to the relationship described above, the optical design parameters of the optical lens 10 in the first embodiment of the present application are as follows:

[0153] Table 1 Structural data of various components of the camera module 1 of the first embodiment

[0154]

[0155]

[0156] In the above table, the meanings of the symbols are as follows:

[0157] OBJ: object distance;

[0158] S1: object-side surface of the first lens L1;

[0159] S2: image-side surface of the first lens L1;

[0160] S3: object-side surface of the second lens L2;

[0161] S4: image-side surface of the second lens L2;

[0162] STO: aperture;

[0163] S5: object-side surface of the third lens L3;

[0164] S6: image-side surface of the third lens L3;

[0165] S7: object-side surface of the fourth lens L4;

[0166] S8: an image-side surface of the fourth lens L4;

[0167] S9: object-side surface of the fifth lens L5;

[0168] S10: image-side surface of the fifth lens L5;

[0169] S11: object-side surface of the sixth lens L6;

[0170] S12: image-side surface of the sixth lens L6;

[0171] S13: object-side surface of the seventh lens L7;

[0172] S14: image-side surface of the seventh lens L7;

[0173] S15: the object side surface of the infrared filter 30;

[0174] S16: image side surface of the outer filter 30;

[0175] S17: Imaging surface.

[0176] It should be noted that, unless otherwise specified, the meanings of the above-mentioned symbols in this application will have the same meanings when they appear again in the future and will not be repeated here.

[0177] Table 2 Aspheric coefficients of the optical lens 10 of the first embodiment

[0178]

[0179]

[0180] surface 5 6 7 8 9 K A4 0.00244 -0.06707 -0.08599 -0.08436 -0.07922 A6 0.001604 0.034753 0.013472 0.031085 0.055556 A8 -0.00324 -0.01545 -0.00351 -0.01106 -0.02466 A10 0.001615 0.004472 -0.0024 0.001242 0.006325 A12 -0.00045 -0.00074 0.00155 0.000241 -0.00091 A14 4.70E-05 5.05E-05 -0.00022 -4.70E-05 5.43E-05 A16 A18

[0181] surface 10 11 12 13 14 K -1 -1 -1 -1 A4 -0.15258 0.356065 0.21118 -0.10036 -0.04051 A6 0.1331 -0.1754 -0.04219 0.031201 0.023135 A8 -0.07397 0.068699 -0.01761 -0.0039 -0.01048 A10 0.027209 -0.01661 0.017359 -0.00297 0.002649 A12 -0.00637 0.00206 -0.0055 0.001615 -0.00039 A14 0.000843 -8.90E-05 0.000793 -0.00035 3.43E-05 A16 -4.80E-05 -1.70E-06 -4.40E-05 3.82E-05 -1.60E-06 A18 -1.70E-06 3.19E-08

[0182] Wherein, K represents the cone coefficient in the aspheric curve equation, and A4, A6, A8, A10, A12, A14, A16, and A18 represent the 4th, 6th, 8th, 10th, 12th, 14th, 16th, and 18th order aspheric coefficients of each surface. It should be noted that the parameters in the table are expressed in scientific notation. In this application, when symbols such as K, A4, A6, A8, A10, A12, A14, A16, and A18 appear again in the future, unless otherwise explained, the meanings represented are the same as here, and will not be repeated in the future.

[0183] By substituting the above parameters into the formula, each lens of the optical lens 10 of this embodiment can be designed:

[0184]

[0185] Where z is the optical surface sag; k is the cone coefficient; c is the radius of curvature; r is the radius height in the direction of the optical axis; r2 = x2 + y2; A i are the polynomial coefficients; r i is the normalized radial coordinate.

[0186] Please refer to Figure 3B , Figure 3C , Figure 3D , which illustrates the optical performance of the optical lens 10 according to the first embodiment.

[0187] Figure 3B The figure shows the axial chromatic aberration of light with wavelengths of 650nm, 610nm, 550nm, 510nm, and 470nm after passing through the optical lens 10 of the first embodiment. The ordinate represents the normalized pupil coordinate, and the abscissa represents the axial chromatic aberration, in millimeters. Figure 3B It can be seen from the figure that in this embodiment, the axial chromatic aberration of the optical lens 10 in each state is controlled within a very small range.

[0188] Figure 3C The figure shows the astigmatism of light with a wavelength of 550 nm after passing through the optical lens 10 of the first embodiment. The solid line is the astigmatism of the light with a wavelength of 550 nm after passing through the optical lens 10 in the meridian direction, and the dotted line is the field curvature of the light with a wavelength of 550 nm after passing through the optical lens 10 in the sagittal direction. The ordinate is the object angle, and the abscissa represents the astigmatism value in the meridian direction (dotted line) and sagittal direction (solid line), and the unit is millimeter. Figure 3C It can be seen that in this embodiment, the astigmatism of the optical lens 10 in each state is controlled within a very small range.

[0189] Figure 3D Graph 1 shows the distortion of light with a wavelength of 550 nm after passing through the optical lens 10 of the first embodiment. The ordinate is the object angle, and the abscissa represents the optical distortion value corresponding to different fields of view, in percentage. Figure 3C It can be seen from the figure that in this embodiment, the distortion of the optical lens 10 is controlled within a very small range.

[0190] This embodiment sets the parameters of each lens and coordinates the parameters between the lenses so that the optical lens 10 can fully correct the aberration on the basis of having wide-angle and large aperture characteristics, so that the optical lens 10 has a better imaging effect and reduces the opening size of the electronic device 100.

[0191] Figure 4A The diagram shows the structure of a camera module 1 according to a second embodiment of the present application.

[0192] In the second embodiment, the optical lens 10 includes an aperture and seven lenses. Specifically, a first lens group, a second lens group, and a third lens group are sequentially arranged from the object side to the image side, wherein the first lens group L1 includes a first lens L1 and a second lens L2, the second lens group includes a third lens L3, a fourth lens L4, and a fifth lens L5, and the third lens group includes a sixth lens L6 and a seventh lens L7.

[0193] In the embodiment of the present application, the object side surface of the first lens L1 is concave near the optical axis, and the image side surface is concave near the optical axis. The object side surface of the second lens L2 is convex near the optical axis, and the image side surface is concave near the optical axis.

[0194] The object side surface of the third lens L3 is convex near the optical axis, and the image side surface is convex near the optical axis. The object side surface of the fourth lens L4 is convex near the optical axis, and the image side surface is convex near the optical axis. The object side surface of the fifth lens L5 is concave near the optical axis, and the image side surface is concave near the optical axis. The effective aperture DSn of the third lens L3, the fourth lens L4, and the fifth lens L5 in the second lens group and the entrance pupil diameter EPD of the optical lens 10 satisfy 2.5>DSn / EPD>1.1. Specifically, DS3 / EPD is 1.88, DS4 / EPD is 1.9, and DS5 / EPD is 1.83. It can be understood that the second lens group plays a core convergence role, which can greatly reduce aberrations and greatly improve the imaging quality of the optical lens 10.

[0195] The object side surface of the sixth lens L6 is convex near the optical axis, and the image side surface is concave near the optical axis. The object side surface of the seventh lens L7 is convex near the optical axis, and the image side surface is concave near the optical axis. The effective aperture DS1 of the first lens L1 and the effective aperture DS7 of the seventh lens L7 satisfy DS1 / DS7 is 1, which can effectively correct the field curvature in the aberration. The effective aperture DS7 of the seventh lens L7 and the image height ImgH of the optical lens 10 satisfy DS7 / ImgH is 1.66, which can effectively correct the field curvature in the aberration.

[0196] In the embodiment of the present application, the Abbe number of the first preset lens is 19.4, including the second lens L2 and the fifth lens L5; the Abbe number of the second preset lens is 56, including the first lens L1, the third lens L3, the fourth lens L4, the sixth lens L6 and the seventh lens L7. Among them, the ratio of the thickness CTH of any lens of the first lens L1, the third lens L3, the fourth lens L4, the sixth lens L6 and the seventh lens L7 to the thickness CTL of the fifth lens L5 satisfies 15>CTH / CTL>1.1, which can effectively correct the chromatic aberration in the aberration.

[0197] According to the relationship described above, the optical design parameters of the optical lens 10 in the second embodiment of the present application are as follows:

[0198] Table 3 Structural data of components of the camera module 1 of the second embodiment

[0199]

[0200]

[0201] Table 4 Aspheric coefficients of the optical lens 10 of the second embodiment

[0202] surface 1 2 3 4 K A4 0.1172594 -0.16454 -0.17769 -0.04269 A6 -0.056499 0.431327 0.235248 0.185411 A8 0.0200095 -0.60432 -0.19388 -0.23415 A10 -0.004974 0.523471 0.114646 0.214933 A12 0.0008472 -0.28423 -0.04221 -0.1133 A14 -9.30E-05 0.093026 0.008264 0.032537 A16 5.87E-06 -0.01681 -0.00063 -0.00398 A18 -1.61E-07 0.001297

[0203] surface 5 6 7 8 9 K A4 -0.00237 -0.08896 -0.07276 0.103513 0.157593 A6 -0.00778 0.072372 0.060905 -0.16098 -0.17285 A8 0.006814 -0.0483 -0.03852 0.118549 0.148438 A10 -0.00231 0.021795 0.017396 -0.05119 -0.07806 A12 0.000306 -0.00606 -0.005 0.013429 0.024579 A14 -7.80E-06 0.000913 0.000805 -0.00195 -0.00417 A16 -5.70E-05 -5.70E-05 0.000119 0.000296 A18

[0204] surface 10 11 12 13 14 K -1 -1 -1 A4 -0.05581 -0.29861 -0.55471 -0.41238 0.039053 A6 0.056688 0.437137 0.625929 0.372953 -0.23892 A8 -0.01566 -0.66473 -0.57162 -0.46566 0.185315 A10 -0.00504 0.664258 0.360924 0.376598 -0.07496 A12 0.006484 -0.42783 -0.14943 -0.18231 0.017851 A14 -0.00247 0.169049 0.038082 0.053378 -0.00255 A16 0.000375 -0.03735 -0.0053 -0.00927 0.00021 A18 0.003511 0.000271 0.00088 -8.80E-06 7.58E-06 -3.50E-05 1.31E-07

[0205] By substituting the above parameters into the formula, each lens of the optical lens 10 of this embodiment can be designed:

[0206]

[0207] Where z is the optical surface sag; k is the cone coefficient; c is the radius of curvature; r is the radius height in the direction of the optical axis; r2 = x2 + y2; A i are the polynomial coefficients; r i is the normalized radial coordinate.

[0208] Please refer to Figure 4B , Figure 4C , Figure 4D , which illustrates the optical performance of the optical lens 10 according to the second embodiment.

[0209] Figure 4B The figure shows the axial chromatic aberration of light with wavelengths of 650nm, 610nm, 550nm, 510nm, and 470nm after passing through the optical lens 10 of the second embodiment. The ordinate represents the normalized pupil coordinate, and the abscissa represents the axial chromatic aberration, in millimeters. Figure 4B It can be seen from the figure that in this embodiment, the axial chromatic aberration of the optical lens 10 in each state is controlled within a very small range.

[0210] Figure 4C The figure shows the astigmatism of light with a wavelength of 550 nm after passing through the optical lens 10 of the second embodiment. The solid line is the astigmatism of the light with a wavelength of 550 nm after passing through the optical lens 10 in the meridian direction, and the dotted line is the field curvature of the light with a wavelength of 550 nm after passing through the optical lens 10 in the sagittal direction. The ordinate is the object angle, and the abscissa represents the astigmatism value in the meridian direction (dotted line) and sagittal direction (solid line), and the unit is millimeter. Figure 4C It can be seen that in this embodiment, the astigmatism of the optical lens 10 in each state is controlled within a very small range.

[0211] Figure 4D Graph 1 shows the distortion of light with a wavelength of 550 nm after passing through the optical lens 10 of the second embodiment. The ordinate is the object angle, and the abscissa represents the optical distortion value corresponding to different fields of view, in percentage. Figure 4C It can be seen from the figure that in this embodiment, the distortion of the optical lens 10 is controlled within a very small range.

[0212] This embodiment sets the parameters of each lens and coordinates the parameters between the lenses so that the optical lens 10 can fully correct the aberration on the basis of having wide-angle and large aperture characteristics, so that the optical lens 10 has a better imaging effect and reduces the opening size of the electronic device 100.

[0213] Figure 5A The diagram illustrates the structure of a camera module 1 according to a third embodiment of the present application.

[0214] In the third embodiment, the optical lens 10 includes an aperture and seven lenses. Specifically, a first lens group, a second lens group, and a third lens group are sequentially arranged from the object side to the image side, wherein the first lens group includes a first lens L1 and a second lens L2, the second lens group includes a third lens L3, a fourth lens L4, and a fifth lens L5, and the third lens group includes a sixth lens L6 and a seventh lens L7.

[0215] In the embodiment of the present application, the object side surface of the first lens L1 is concave near the optical axis, and the image side surface is concave near the optical axis. The object side surface of the second lens L2 is convex near the optical axis, and the image side surface is concave near the optical axis.

[0216] The object side surface of the third lens L3 is convex near the optical axis, and the image side surface is convex near the optical axis. The object side surface of the fourth lens L4 is convex near the optical axis, and the image side surface is concave near the optical axis. The object side surface of the fifth lens L5 is convex near the optical axis, and the image side surface is convex near the optical axis. The effective aperture DSn of the third lens L3, the fourth lens L4, and the fifth lens L5 in the second lens group and the entrance pupil diameter EPD of the optical lens 10 satisfy 2.5>DSn / EPD>1.1. Specifically, DS3 / EPD is 1.78, DS4 / EPD is 2, and DS5 / EPD is 2.29. It can be understood that the second lens group plays a core convergence role, which can greatly reduce aberrations and greatly improve the imaging quality of the optical lens 10.

[0217] The object side surface of the sixth lens L6 is convex near the optical axis, and the image side surface is convex near the optical axis. The object side surface of the seventh lens L7 is convex near the optical axis, and the image side surface is concave near the optical axis. The effective aperture DS1 of the first lens L1 and the effective aperture DS7 of the seventh lens L7 satisfy DS1 / DS7 of 1.01, which can effectively correct the field curvature in the aberration. The effective aperture DS7 of the seventh lens L7 and the image height ImgH of the optical lens 10 satisfy DS7 / ImgH of 1.73, which can effectively correct the field curvature in the aberration.

[0218] In the embodiment of the present application, the Abbe number of the first preset lens is 19.4, including the second lens L2 and the fifth lens L5; the Abbe number of the second preset lens is 56, including the first lens L1, the third lens L3, the fourth lens L4, the sixth lens L6 and the seventh lens L7. Among them, the ratio of the thickness CTH of the third lens L3 to the thickness CTL of the second lens L2 satisfies 15>CTH / CTL>1.1, which can effectively correct the chromatic aberration in the aberration.

[0219] According to the relationship described above, the optical design parameters of the optical lens 10 in the third embodiment of the present application are as follows:

[0220] Table 5 Structural data of components of the camera module 1 of the third embodiment

[0221]

[0222]

[0223] Table 6 Aspheric coefficients of the optical lens 10 of the third embodiment

[0224] surface 1 2 3 4 K A4 0.0580954 -0.06896 -0.07666 0.029931 A6 -0.022306 0.069883 0.077159 0.040812 A8 0.0061897 -0.02623 -0.02908 -0.03693 A10 -0.001122 -0.0141 -0.0018 0.034975 A12 0.0001264 0.012754 0.004386 -0.01666 A14 -8.01E-06 -0.00311 -0.0008 0.003985 A16 2.18E-07 0.000218 2.61E-06 A18

[0225] surface 5 6 7 8 9 K A4 0.007254 0.019751 -0.15019 -0.15641 -0.00227 A6 -0.00258 0.009369 0.041453 0.065266 0.02626 A8 0.000852 -0.00822 -0.00546 -0.01757 -0.01671 A10 -0.00101 0.003512 -0.00062 0.002893 0.005452 A12 0.000329 -0.00071 0.000498 -0.00026 -0.00104 A14 -4.30E-05 6.78E-05 -6.80E-05 8.43E-06 0.000109 A16 -4.70E-06 A18

[0226]

[0227]

[0228] By substituting the above parameters into the formula, each lens of the optical lens 10 of this embodiment can be designed:

[0229]

[0230] Where z is the optical surface sag; k is the cone coefficient; c is the radius of curvature; r is the radius height in the direction of the optical axis; r2 = x2 + y2; A i are the polynomial coefficients; r i is the normalized radial coordinate.

[0231] Please refer to Figure 5B , Figure 5C , Figure 5D , which illustrates the optical performance of the optical lens 10 according to the third embodiment.

[0232] Figure 5B The figure shows the axial chromatic aberration of light with wavelengths of 650nm, 610nm, 550nm, 510nm, and 470nm after passing through the optical lens 10 of the third embodiment. The ordinate represents the normalized pupil coordinate, and the abscissa represents the axial chromatic aberration, in millimeters. Figure 5B It can be seen from the figure that in this embodiment, the axial chromatic aberration of the optical lens 10 in each state is controlled within a very small range.

[0233] Figure 5C The figure shows the astigmatism of light with a wavelength of 550 nm after passing through the optical lens 10 of the third embodiment. The solid line is the astigmatism of the light with a wavelength of 550 nm after passing through the optical lens 10 in the meridian direction, and the dotted line is the field curvature of the light with a wavelength of 550 nm after passing through the optical lens 10 in the sagittal direction. The ordinate is the object angle, and the abscissa represents the astigmatism value in the meridian direction (dotted line) and sagittal direction (solid line), and the unit is millimeter. Figure 5C It can be seen that in this embodiment, the astigmatism of the optical lens 10 in each state is controlled within a very small range.

[0234] Figure 5D Graph 1 shows the distortion of light with a wavelength of 550 nm after passing through the optical lens 10 of the third embodiment. The ordinate is the object angle, and the abscissa represents the optical distortion value corresponding to different fields of view, in percentage. Figure 5C It can be seen from the figure that in this embodiment, the distortion of the optical lens 10 is controlled within a very small range.

[0235] This embodiment sets the parameters of each lens and coordinates the parameters between the lenses so that the optical lens 10 can fully correct the aberration on the basis of having wide-angle and large aperture characteristics, so that the optical lens 10 has a better imaging effect and reduces the opening size of the electronic device 100.

[0236] Fig. 6A The diagram shows the structure of a camera module 1 according to a fourth embodiment of the present application.

[0237] In the fourth embodiment, the optical lens 10 includes an aperture and eight lenses. Specifically, a first lens group, a second lens group, and a third lens group are sequentially arranged from the object side to the image side, wherein the first lens group includes a first lens L1 and a second lens L2, the second lens group includes a third lens L3, a fourth lens L4, and a fifth lens L5, and the third lens group includes a sixth lens L6, a seventh lens L7, and an eighth lens L8.

[0238] In the embodiment of the present application, the object side surface of the first lens L1 is concave near the optical axis, and the image side surface is concave near the optical axis. The object side surface of the second lens L2 is convex near the optical axis, and the image side surface is concave near the optical axis.

[0239] The object side surface of the third lens L3 is concave near the optical axis, and the image side surface is convex near the optical axis. The object side surface of the fourth lens L4 is convex near the optical axis, and the image side surface is concave near the optical axis. The object side surface of the fifth lens L5 is convex near the optical axis, and the image side surface is convex near the optical axis. The effective aperture DSn of the third lens L3, the fourth lens L4, and the fifth lens L5 in the second lens group and the entrance pupil diameter EPD of the optical lens 10 satisfy 2.5>DSn / EPD>1.1. Specifically, DS3 / EPD is 1.44, DS4 / EPD is 1.78, and DS5 / EPD is 1.95. It can be understood that the second lens group plays a core convergence role, which can greatly reduce aberrations and greatly improve the imaging quality of the optical lens 10.

[0240] The object side surface of the sixth lens L6 is concave near the optical axis, and the image side surface is convex near the optical axis. The object side surface of the seventh lens L7 is convex near the optical axis, and the image side surface is convex near the optical axis. The object side surface of the first lens L1 of the eighth lens L8 is convex near the optical axis, and the image side surface is concave near the optical axis. The effective aperture DS1 and the effective aperture DS7 of the eighth lens L8 satisfy DS1 / DS8 of 0.77, which can effectively correct the field curvature in the aberration. The effective aperture DS8 of the eighth lens L8 and the image height ImgH of the optical lens 10 satisfy DS8 / ImgH of 1.82, which can effectively correct the field curvature in the aberration.

[0241] In the embodiment of the present application, the Abbe number of the first preset lens is 19.4, and it includes the second lens L2, the fourth lens L4, and the sixth lens L6; the Abbe number of the second preset lens is 56, and it includes the first lens L1, the third lens L3, the fifth lens L5, the seventh lens L7, and the eighth lens L8. Among them, the ratio of the thickness CTH of any lens of the third lens L3, the fifth lens L5, and the seventh lens L7 to the thickness CTL of any lens of the second lens L2, the fourth lens L4, and the sixth lens L6 satisfies 15>CTH / CTL>1.1, which can effectively correct the chromatic aberration in the aberration.

[0242] According to the relationship formula introduced above, the optical design parameters of the optical lens 10 in the fourth embodiment of the present application are as follows:

[0243] Table 7 Structural data of components of the camera module 1 of the fourth embodiment

[0244]

[0245]

[0246] In the above table, some symbols have the following meanings:

[0247] S15: image-side surface of the eighth lens L8;

[0248] S16: image-side surface of the eighth lens L8;

[0249] S17: the object side surface of the infrared filter 30;

[0250] S18: image side surface of the outer filter 30;

[0251] S19: Imaging surface.

[0252] Table 8 Aspheric coefficients of the optical lens 10 of the fourth embodiment

[0253] surface 1 2 3 4 K A4 0.0869585 -0.06262 -0.10225 0.048862 A6 -0.045064 0.252383 0.245353 0.080373 A8 0.0190303 -0.41525 -0.37467 -0.12456 A10 -0.005693 0.387369 0.366056 0.146384 A12 0.0011504 -0.20832 -0.2146 -0.08748 A14 -0.000148 0.060668 0.069102 0.022558 A16 1.10E-05 -0.00733 -0.00935 A18 -3.51E-07

[0254] surface 5 6 7 8 9 K A4 -0.00433 0.019988 -0.07451 -0.10083 0.006819 A6 0.01036 0.004909 0.057039 0.059191 -0.01327 A8 -0.04826 -0.03028 -0.05701 -0.04251 0.012141 A10 0.058201 0.031965 0.036486 0.020389 -0.00766 A12 -0.03655 -0.01869 -0.0141 -0.00613 0.002951 A14 0.008458 0.005907 0.003031 0.001061 -0.00057 A16 -0.00085 -0.00028 -8.40E-05 4.27E-05 A18

[0255] surface 10 11 12 13 14 K -1 -1 -1 A4 -0.03741 0.451867 0.177202 -0.08276 0.057886 A6 0.035352 -0.29509 -0.0334 0.041828 -0.04128 A8 0.000294 0.179248 -0.02175 -0.01959 0.01383 A10 -0.01851 -0.09246 0.02056 0.006536 -0.0029 A12 0.010332 0.033695 -0.00786 -0.00158 0.000397 A14 -0.00228 -0.00771 0.001621 0.00026 -3.40E-05 A16 0.000186 0.000985 -0.00018 -2.60E-05 1.39E-06 A18 -5.40E-05 7.95E-06 1.15E-06

[0256] By substituting the above parameters into the formula, each lens of the optical lens 10 of this embodiment can be designed:

[0257]

[0258] Where z is the optical surface sag; k is the cone coefficient; c is the radius of curvature; r is the radius height in the direction of the optical axis; r2 = x2 + y2; A i are the polynomial coefficients; r i is the normalized radial coordinate.

[0259] Please refer to Figure 6B , Figure 6C , Fig.6D , which illustrates the optical performance of the optical lens 10 according to the fourth embodiment.

[0260] Figure 6B The figure shows the axial chromatic aberration of light with wavelengths of 650nm, 610nm, 550nm, 510nm, and 470nm after passing through the optical lens 10 of the fourth embodiment. The ordinate represents the normalized pupil coordinate, and the abscissa represents the axial chromatic aberration, in millimeters. Figure 6B It can be seen from the figure that in this embodiment, the axial chromatic aberration of the optical lens 10 in each state is controlled within a very small range.

[0261] Figure 6C The figure shows the astigmatism of the light with a wavelength of 550 nm after passing through the optical lens 10 of the fourth embodiment. The solid line is the astigmatism of the light with a wavelength of 550 nm after passing through the optical lens 10 in the meridian direction, and the dotted line is the field curvature of the light with a wavelength of 550 nm after passing through the optical lens 10 in the sagittal direction. The ordinate is the object angle, and the abscissa represents the astigmatism value in the meridian direction (dotted line) and sagittal direction (solid line), and the unit is millimeter. Figure 6CIt can be seen that in this embodiment, the astigmatism of the optical lens 10 in each state is controlled within a very small range.

[0262] Fig.6D Graph 1 shows the distortion of light with a wavelength of 550 nm after passing through the optical lens 10 of the fourth embodiment. The ordinate is the object angle, and the abscissa represents the optical distortion value corresponding to different fields of view, in percentage. Figure 6C It can be seen from the figure that in this embodiment, the distortion of the optical lens 10 is controlled within a very small range.

[0263] This embodiment sets the parameters of each lens and coordinates the parameters between the lenses so that the optical lens 10 can fully correct the aberration on the basis of having wide-angle and large aperture characteristics, so that the optical lens 10 has a better imaging effect and reduces the opening size of the electronic device 100.

[0264] Fig. 7A The diagram shows the structure of a camera module 1 according to a fifth embodiment of the present application.

[0265] In the fifth embodiment, the optical lens 10 includes a stop and seven lenses. Specifically, a first lens group, a second lens group, and a third lens group are sequentially arranged from the object side to the image side, wherein the first lens group includes a first lens L1 and a second lens L2, the second lens group includes a third lens L3, a fourth lens L4, and a fifth lens L5, and the third lens group includes a sixth lens L6 and a seventh lens L7.

[0266] In the embodiment of the present application, the object side surface of the first lens L1 is concave near the optical axis, and the image side surface is concave near the optical axis. The object side surface of the second lens L2 is convex near the optical axis, and the image side surface is concave near the optical axis.

[0267] The object side surface of the third lens L3 is convex near the optical axis, and the image side surface is convex near the optical axis. The object side surface of the fourth lens L4 is concave near the optical axis, and the image side surface is concave near the optical axis. The object side surface of the fifth lens L5 is concave near the optical axis, and the image side surface is convex near the optical axis. The effective aperture DSn of the third lens L3, the fourth lens L4, and the fifth lens L5 in the second lens group and the entrance pupil diameter EPD of the optical lens 10 satisfy 2.5>DSn / EPD>1.1. Specifically, DS3 / EPD is 1.55, DS4 / EPD is 1.64, and DS5 / EPD is 1.79. It can be understood that the second lens group plays a core convergence role, which can greatly reduce aberrations and greatly improve the imaging quality of the optical lens 10.

[0268] The object side surface of the sixth lens L6 is convex near the optical axis, and the image side surface is convex near the optical axis. The object side surface of the seventh lens L7 is convex near the optical axis, and the image side surface is concave near the optical axis. The effective aperture DS1 of the first lens L1 and the effective aperture DS7 of the seventh lens L7 satisfy DS1 / DS7 of 0.9, which can effectively correct the field curvature in the aberration. The effective aperture DS7 of the seventh lens L7 and the image height ImgH of the optical lens 10 satisfy DS7 / ImgH of 1.79, which can effectively correct the field curvature in the aberration.

[0269] In the embodiment of the present application, the Abbe number of the first preset lens is 19.4, including the second lens L2 and the fifth lens L5; the Abbe number of the second preset lens is 56, including the first lens L1, the third lens L3, the fourth lens L4, the sixth lens L6 and the seventh lens L7. Among them, the ratio of the thickness CTH of the third lens L3 to the thickness CTL of the second lens L2 satisfies 15>CTH / CTL>1.1, which can effectively correct the chromatic aberration in the aberration.

[0270] According to the relationship described above, the optical design parameters of the optical lens 10 in the fifth embodiment of the present application are as follows:

[0271] Table 9 Structural data of components of the camera module 1 of the fifth embodiment

[0272]

[0273]

[0274] Table 10 Aspheric coefficients of the optical lens 10 of the fifth embodiment

[0275] surface 1 2 3 4 K A4 0.084473 -0.19572 -0.22085 0.125774 A6 -0.03423 0.402199 0.484109 0.078903 A8 0.011792 -0.49307 -0.73324 -0.00074 A10 -0.00272 0.399397 0.797516 0.17568 A12 0.000397 -0.19634 -0.53997 -0.26263 A14 -3.30E-05 0.053423 0.204936 0.219386 A16 1.17E-06 -0.00613 -0.03325 A18

[0276] surface 5 6 7 8 9 K A4 0.002212 -0.05531 -0.10778 -0.0716 0.003535 A6 -0.01697 0.106887 0.129054 -0.04685 -0.12818 A8 0.016052 -0.17151 -0.09854 0.19569 0.288819 A10 -0.07805 0.111784 0.033447 -0.17757 -0.23536 A12 0.034519 -0.04178 -0.00196 0.076965 0.095765 A14 -0.01479 -0.01669 A16 A18

[0277] surface 10 11 12 13 14 K -1 -1 -1 -1 A4 -0.20485 0.253493 0.16754 -0.19112 -0.16799 A6 0.141371 -0.42897 -0.12178 0.05245 0.037735 A8 0.235401 0.78502 0.094718 -0.0147 -0.00473 A10 -0.38619 -0.76145 -0.03838 0.003174 -0.00029 A12 0.230863 0.396347 0.00764 -0.00043 0.000226 A14 -0.06596 -0.10766 -0.00065 3.10E-05 -3.80E-05 A16 0.008067 0.012081 1.06E-05 -9.30E-07 2.89E-06 A18 -8.70E-08

[0278] By substituting the above parameters into the formula, each lens of the optical lens 10 of this embodiment can be designed:

[0279]

[0280] Where z(x,y) is the optical surface sag; k is the cone coefficient; c is the radius of curvature; r is the radius height in the direction of the optical axis; r2=x2+y2; A i are the polynomial coefficients; r i is the normalized radial coordinate.

[0281] Please refer to Figure 7B , Figure 7C , Fig.7D, which illustrates the optical performance of the optical lens 10 according to the fifth embodiment.

[0282] Figure 7B The figure shows the axial chromatic aberration of light with wavelengths of 650nm, 610nm, 550nm, 510nm, and 470nm after passing through the optical lens 10 of the fifth embodiment. The ordinate represents the normalized pupil coordinate, and the abscissa represents the axial chromatic aberration, in millimeters. Figure 7B It can be seen from the figure that in this embodiment, the axial chromatic aberration of the optical lens 10 in each state is controlled within a very small range.

[0283] Figure 7C The figure shows the astigmatism of light with a wavelength of 550 nm after passing through the optical lens 10 of the fifth embodiment. The solid line is the astigmatism of the light with a wavelength of 550 nm after passing through the optical lens 10 in the meridian direction, and the dotted line is the field curvature of the light with a wavelength of 550 nm after passing through the optical lens 10 in the sagittal direction. The ordinate is the object angle, and the abscissa represents the astigmatism value in the meridian direction (dotted line) and sagittal direction (solid line), and the unit is millimeter. Figure 7C It can be seen that in this embodiment, the astigmatism of the optical lens 10 in each state is controlled within a very small range.

[0284] Fig.7D Graph 1 shows the distortion of light with a wavelength of 550 nm after passing through the optical lens 10 of the fifth embodiment. The ordinate is the object angle, and the abscissa represents the optical distortion value corresponding to different fields of view, in percentage. Figure 7C It can be seen from the figure that in this embodiment, the distortion of the optical lens 10 is controlled within a very small range.

[0285] This embodiment sets the parameters of each lens and coordinates the parameters between the lenses so that the optical lens 10 can fully correct the aberration on the basis of having wide-angle and large aperture characteristics, so that the optical lens 10 has a better imaging effect and reduces the opening size of the electronic device 100.

[0286] Fig. 8A The diagram shows the structure of a camera module 1 according to a sixth embodiment of the present application.

[0287] In the sixth embodiment, the optical lens 10 includes an aperture and seven lenses. Specifically, a first lens group, a second lens group, and a third lens group are sequentially arranged from the object side to the image side, wherein the first lens group includes a first lens L1 and a second lens L2, the second lens group includes a third lens L3, a fourth lens L4, and a fifth lens L5, and the third lens group includes a sixth lens L6 and a seventh lens L7.

[0288] In the embodiment of the present application, the object side surface of the first lens L1 is concave near the optical axis, and the image side surface is concave near the optical axis. The object side surface of the second lens L2 is convex near the optical axis, and the image side surface is concave near the optical axis.

[0289] The object side surface of the third lens L3 is convex near the optical axis, and the image side surface is convex near the optical axis. The object side surface of the fourth lens L4 is convex near the optical axis, and the image side surface is concave near the optical axis. The object side surface of the fifth lens L5 is convex near the optical axis, and the image side surface is convex near the optical axis. The effective aperture DSn of the third lens L3, the fourth lens L4, and the fifth lens L5 in the second lens group and the entrance pupil diameter EPD of the optical lens 10 satisfy 2.5>DSn / EPD>1.1. Specifically, DS3 / EPD is 1.36, DS4 / EPD is 1.6, and DS5 / EPD is 1.88. It can be understood that the second lens group plays a core convergence role, which can greatly reduce aberrations and greatly improve the imaging quality of the optical lens 10.

[0290] The object side surface of the sixth lens L6 is concave near the optical axis, and the image side surface is convex near the optical axis. The object side surface of the seventh lens L7 is convex near the optical axis, and the image side surface is concave near the optical axis. The effective aperture DS1 of the first lens L1 and the effective aperture DS7 of the seventh lens L7 satisfy DS1 / DS7 of 0.84, which can effectively correct the field curvature in the aberration. The effective aperture DS7 of the seventh lens L7 and the image height ImgH of the optical lens 10 satisfy DS7 / ImgH of 1.75, which can effectively correct the field curvature in the aberration.

[0291] In the embodiment of the present application, the Abbe number of the first preset lens is 19.4, including the second lens L2 and the fifth lens L5; the Abbe number of the second preset lens is 56, including the first lens L1, the third lens L3, the fourth lens L4, the sixth lens L6 and the seventh lens L7. Among them, the ratio of the thickness CTH of the third lens L3 to the thickness CTL of the second lens L2 satisfies 15>CTH / CTL>1.1, which can effectively correct the chromatic aberration in the aberration.

[0292] According to the relationship described above, the optical design parameters of the optical lens 10 in the sixth embodiment of the present application are as follows:

[0293] Table 11 Structural data of components of the camera module 1 of the sixth embodiment

[0294]

[0295]

[0296] Table 12 Aspheric coefficients of the optical lens 10 of the sixth embodiment

[0297] surface 1 2 3 4 K A4 0.079333 -0.16746 -0.18328 0.075724 A6 -0.03075 0.268155 0.297645 0.02377 A8 0.008573 -0.20618 -0.26368 0.088606 A10 -0.00151 0.080254 0.165599 -0.12778 A12 0.000167 -0.01384 -0.07346 0.092122 A14 -1.00E-05 0.000398 0.020532 -0.02054 A16 2.85E-07 0.000133 -0.00255 A18

[0298] surface 5 6 7 8 9 K A4 0.002635 -0.1261 -0.12763 -0.06442 -0.05135 A6 0.011155 0.1359 0.095504 0.018092 0.06475 A8 -0.04581 -0.11958 -0.07183 0.005889 -0.03229 A10 0.04821 0.063298 0.041141 -0.0096 0.006389 A12 -0.02773 -0.01949 -0.0136 0.004605 0.000556 A14 0.005968 0.002351 0.001922 -0.00079 -0.00024 A16 A18

[0299]

[0300]

[0301] By substituting the above parameters into the formula, each lens of the optical lens 10 of this embodiment can be designed:

[0302]

[0303] Where z is the optical surface sag; k is the cone coefficient; c is the radius of curvature; r is the radius height in the direction of the optical axis; r2 = x2 + y2; A i are the polynomial coefficients; r i is the normalized radial coordinate.

[0304] Please refer to Figure 8B , Figure 8C , Fig.8D , which illustrates the optical performance of the optical lens 10 according to the sixth embodiment.

[0305] Figure 8B The figure shows the axial chromatic aberration of light with wavelengths of 650nm, 610nm, 550nm, 510nm, and 470nm after passing through the optical lens 10 of the sixth embodiment. The ordinate represents the normalized pupil coordinate, and the abscissa represents the axial chromatic aberration, in millimeters. Figure 8B It can be seen from the figure that in this embodiment, the axial chromatic aberration of the optical lens 10 in each state is controlled within a very small range.

[0306] Figure 8C The figure shows the astigmatism of light with a wavelength of 550 nm after passing through the optical lens 10 of the sixth embodiment. The solid line is the astigmatism of the light with a wavelength of 550 nm after passing through the optical lens 10 in the meridian direction, and the dotted line is the field curvature of the light with a wavelength of 550 nm after passing through the optical lens 10 in the sagittal direction. The ordinate is the object angle, and the abscissa represents the astigmatism value in the meridian direction (dotted line) and sagittal direction (solid line), and the unit is millimeter. Figure 8C It can be seen that in this embodiment, the astigmatism of the optical lens 10 in each state is controlled within a very small range.

[0307] Fig.8D Graph 1 shows the distortion of light with a wavelength of 550 nm after passing through the optical lens 10 of the sixth embodiment. The ordinate is the object angle, and the abscissa represents the optical distortion value corresponding to different fields of view, in percentage. Figure 8C It can be seen from the figure that in this embodiment, the distortion of the optical lens 10 is controlled within a very small range.

[0308] Fig.9A The diagram illustrates the structure of a camera module 1 according to a seventh embodiment of the present application.

[0309] In the first embodiment, the optical lens 10 includes an aperture and six lenses. Specifically, a first lens group, a second lens group, and a third lens group are sequentially arranged from the object side to the image side, wherein the first lens group includes a first lens L1 and a second lens L2, the second lens group includes a third lens L3 and a fourth lens L4, and the third lens group includes a fifth lens L5 and a sixth lens L6.

[0310] In the embodiment of the present application, the object side surface of the first lens L1 is concave near the optical axis, and the image side surface is concave near the optical axis. The object side surface of the second lens L2 is convex near the optical axis, and the image side surface is concave near the optical axis.

[0311] The object side surface of the third lens L3 is convex near the optical axis, and the image side surface is convex near the optical axis. The object side surface of the fourth lens L4 is concave near the optical axis, and the image side surface is convex near the optical axis. The effective aperture DSn of the third lens L3 and the fourth lens L4 in the second lens group and the entrance pupil diameter EPD of the optical lens 10 satisfy 2.5>DSn / EPD>1.1. Specifically, DS3 / EPD is 1.50, and DS4 / EPD is 1.71. It can be understood that the second lens group plays a core convergence role, which can greatly reduce aberrations and greatly improve the imaging quality of the optical lens 10.

[0312] The object side surface of the fifth lens L5 is concave near the optical axis, and the image side surface is convex near the optical axis. The object side surface of the sixth lens L6 is convex near the optical axis, and the image side surface is concave near the optical axis. The effective aperture DS1 of the first lens L1 and the effective aperture DS6 of the sixth lens L6 satisfy DS1 / DS6 of 0.85, which can effectively correct the field curvature in the aberration. The effective aperture DS6 of the sixth lens L6 and the image height ImgH of the optical lens 10 satisfy DS6 / ImgH of 1.61, which can effectively correct the field curvature in the aberration.

[0313] In the embodiment of the present application, the Abbe number of the first preset lens is 19.4, including the second lens L2 and the fifth lens L5; the Abbe number of the second preset lens is 56, including the first lens L1, the third lens L3, the fourth lens L4 and the sixth lens L6. Among them, the ratio of the thickness CTH of any lens of the third lens L3, the fourth lens L4 and the sixth lens L6 to the thickness CTL of the fifth lens L5 satisfies 15>CTH / CTL>1.1, which can effectively correct the chromatic aberration in the aberration.

[0314] According to the relationship formula introduced above, the optical design parameters of the optical lens 10 in the seventh embodiment of the present application are as follows:

[0315] Table 13 Structural data of components of the camera module 1 of the seventh embodiment

[0316]

[0317]

[0318] Table 14 Aspheric coefficients of the optical lens 10 of the seventh embodiment

[0319] surface 1 2 3 4 K A4 0.05530 0.10107 0.09684 0.08435 A6 0.01690 0.02039 0.03022 0.15542 A8 0.00401 0.05699 0.11040 0.11526 A10 0.00054 0.11405 0.19972 0.23700 A12 0.00003 0.07904 0.16350 0.04528 A14 0.00000 0.01917 0.04948 A16

[0320] surface 5 6 7 8 9 K A4 0.01024 0.10811 0.17350 0.01934 0.66247 A6 0.00172 0.05374 0.16408 0.00884 0.66922 A8 0.05441 0.16015 0.05322 0.24091 0.45750 A10 0.02182 0.39821 0.21858 0.16427 0.17430 A12 0.03948 0.24938 0.16598 0.00682 0.16905 A14 0.19790 A16

[0321] surface 10 11 12 K A4 0.18053 0.27759 0.07229 A6 0.02104 0.23986 0.02203 A8 0.05018 0.23984 0.00741 A10 0.00767 0.16675 0.00168 A12 0.01246 0.07435 0.00024 A14 0.00356 0.01800 0.00002 A16 0.00176 0.00000

[0322] By substituting the above parameters into the formula, each lens of the optical lens 10 of this embodiment can be designed:

[0323]

[0324] Where z is the optical surface sag; k is the cone coefficient; c is the radius of curvature; r is the radius height in the direction of the optical axis; r2 = x2 + y2; A i are the polynomial coefficients; r i is the normalized radial coordinate.

[0325] Please refer to Fig. 9B , Fig. 9C , Fig.9D , which illustrates the optical performance of the optical lens 10 according to the seventh embodiment.

[0326] Fig. 9B The figure shows the axial chromatic aberration of light with wavelengths of 650nm, 610nm, 550nm, 510nm, and 470nm after passing through the optical lens 10 of the seventh embodiment. The ordinate represents the normalized pupil coordinate, and the abscissa represents the axial chromatic aberration, in millimeters. Fig. 9B It can be seen from the figure that in this embodiment, the axial chromatic aberration of the optical lens 10 in each state is controlled within a very small range.

[0327] Fig. 9C The figure shows the astigmatism of light with a wavelength of 550 nm after passing through the optical lens 10 of the seventh embodiment. The solid line is the astigmatism of the light with a wavelength of 550 nm after passing through the optical lens 10 in the meridian direction, and the dotted line is the field curvature of the light with a wavelength of 550 nm after passing through the optical lens 10 in the sagittal direction. The ordinate is the object angle, and the abscissa represents the astigmatism value in the meridian direction (dotted line) and sagittal direction (solid line), and the unit is millimeter. Fig. 9CIt can be seen that in this embodiment, the astigmatism of the optical lens 10 in each state is controlled within a very small range.

[0328] Fig.9D Graph 1 shows the distortion of light with a wavelength of 550 nm after passing through the optical lens 10 of the seventh embodiment. The ordinate is the object angle, and the abscissa represents the optical distortion value corresponding to different fields of view, in percentage. Fig. 9C It can be seen from the figure that in this embodiment, the distortion of the optical lens 10 is controlled within a very small range.

[0329] This embodiment sets the parameters of each lens and coordinates the parameters between the lenses so that the optical lens 10 can fully correct the aberration on the basis of having wide-angle and large aperture characteristics, so that the optical lens 10 has a better imaging effect and reduces the opening size of the electronic device 100.

[0330] The following table shows the basic parameters of the optical lens 10 in the above seven specific implementations.

[0331] Table 15 Basic parameters of the optical lens 10 of the first to seventh embodiments

[0332]

[0333]

[0334] Here, one to seven refer to the first to seventh embodiments.

[0335] As shown in the above table, in the above-mentioned first to seventh embodiments, the ratio TTL / EFL of the lens height TTL of the optical lens 10 to the focal length EFL of the optical lens is 4.27, 4.87, 4.62, 4.63, 3.29, 3.10, 3.16, respectively, so that the optical lens 10 has a reasonable physical length, which is sufficient to place a lens for correcting aberrations. The half field of view HFOV of the optical lens 10 is 62, 58.00, 61, 63, 61, 62, 60, respectively, which can achieve a wide angle or an ultra-wide angle. The aperture values ​​F of the optical lens 10 are 1.0, 1.0, 1.0, 1.0, 1.4, 1.2, 1.8, respectively, which can achieve a large aperture.

[0336] The first lens L1 has a negative optical power, and the Abbe number Vd1 of the first lens L1 is 56, so that the first lens L1 plays a role of diverging light, and increases the field angle of the first lens L1. In the first embodiment to the seventh embodiment, the ratio DS1 / EFL of the effective aperture DS1 of the first lens L1 to the focal length EFL of the optical lens 10 is 3.10, 2.73, 2.85, 2.31, 2.63, 2.37, and 2.23, respectively, which can reduce the opening size of the electronic device 100 corresponding to the optical lens 10.

[0337] In the above seven embodiments, the effective aperture DS1 of the first lens L1 and the half field of view HFOV of the optical lens 10 satisfy DS1+2*tan(HFOV) of 10.36, 8.52, 9.17, 8.87, 9.29, 8.88, and 8.26, respectively, which can reduce the opening size of the electronic device 100 corresponding to the optical lens 10. The ratio SI1 / SOC1 of the image side sag height SI1 of the first lens L1 to the object side inflection point sag height SOC1 of the first lens L1 is 16.67, 10.00, 8.50, 17.38, 9.48, 7.97, and 14.00, respectively, that is, the optical lens 10 can adopt an aspherical surface shape, thereby reducing the lens height of the optical lens 10.

[0338] In the above seven embodiments, the ratios SO3 / SI3 of the object-side sagittal height SO3 to the image-side sagittal height SI3 of the third lens L3 are 0.38, 0.13, 0.32, 0.09, 0.16, 0.10 and 0.51 respectively, which can effectively correct the astigmatism in the aberration.

[0339] In the above seven embodiments, the effective aperture DSn of each lens in the second lens group and the entrance pupil diameter EPD of the optical lens 10 all satisfy 2.5>DSn / EPD>1.1. Taking the third embodiment as an example, DS3 / EPD is 1.78, DS4 / EPD is 2, and DS5 / EPD is 2.29. It can be understood that the second lens group plays a core convergence role, which can greatly reduce aberrations and greatly improve the imaging quality of the optical lens 10.

[0340] In the above seven embodiments, the ratio DS1 / DS7 of the effective aperture DS1 of the first lens L1 to the effective aperture DSi of the last lens is 1.02, 1.00, 1.01, 0.77, 0.90, 0.84, and 0.85, respectively, which can effectively correct the field curvature in the aberration. The ratio DS7 / ImgH of the effective aperture DSi of the last lens to the image height ImgH of the optical lens 10 is 1.85, 1.66, 1.73, 1.82, 1.79, 1.75, and 1.61, respectively, which can effectively correct the field curvature in the aberration.

[0341] In the embodiment of the present application, the ratio of the thickness CTH of at least one second preset lens to the thickness CTL of at least one first preset lens L2 satisfies 15>CTH / CTL>1.1. For example, in the first embodiment, CTH3 / CTL6 is 4.26, which can effectively correct chromatic aberration in aberration.

[0342] This embodiment sets the parameters of each lens and coordinates the parameters between the lenses so that the optical lens 10 can fully correct the aberration on the basis of having wide-angle and large aperture characteristics, so that the optical lens 10 has a better imaging effect and reduces the opening size of the electronic device 100.

[0343] Correspondingly, an embodiment of the present application also provides an electronic device, including a shell, a processor and the above-mentioned camera module, the camera module is arranged on the front and / or back of the shell, the camera module is used to transmit image data to the processor, and the processor is used to process the image data.

[0344] In the accompanying drawings, some structural or method features may be shown in a specific arrangement and / or order. However, it should be understood that such a specific arrangement and / or order is not required. Instead, in some embodiments, these features may be described in a manner and / or order different from that shown in the illustrative drawings. In addition, the structural or method features included in a specific figure do not mean that all embodiments need to include such features. In some embodiments, these features may not be included, or these features may be combined with other features.

[0345] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the use of the technical solution of the present application is not limited to the various applications mentioned in the embodiments of the present patent. Various structures and variations can be easily implemented with reference to the technical solution of the present application to achieve the various beneficial effects mentioned herein. Various changes made within the knowledge of ordinary technicians in the field without departing from the purpose of the present application should all fall within the scope of the patent application.

Claims

1. An optical lens, characterized in that: The optical lens comprises a first lens group, a second lens group and a third lens group arranged in sequence from the object side to the image side; The effective aperture DSn of at least one lens in the second lens group and the entrance pupil diameter EPD of the optical lens satisfy 2.5>DSn / EPD>1.1; The first lens in the first lens group close to the object side has negative optical power, and the Abbe number Vd1 of the first lens satisfies Vd1>40.

2. An optical lens according to claim 1, characterized in that: The first lens group includes two lenses, the second lens group includes two lenses, and the third lens group includes one lens.

3. An optical lens according to claim 1, characterized in that: A lens height TTL of the optical lens and a focal length EFL of the optical lens satisfy TTL / EFL>2.

4. The optical lens according to claim 1, characterized in that: There is at least one lens in the second lens group whose object-side sag height SOn and image-side sag height SIn satisfy SOn / SIn<1.

5. The optical lens according to claim 1, characterized in that: The effective aperture DS1 of the first lens and the effective aperture DSi of the i-th lens closest to the image side in the third lens group satisfy 5>DS1 / DSi>0.

5.

6. The optical lens according to claim 1, characterized in that: The effective aperture DSi of the i-th lens closest to the image side in the third lens group and the image height ImgH of the optical lens satisfy 2>DSi / ImgH>0.

5.

7. The optical lens according to claim 1, characterized in that: The optical lens comprises at least two first preset lenses, and the Abbe number of the first preset lenses is lower than 30.

8. An optical lens according to claim 7, characterized in that: The optical lens comprises a plurality of second preset lenses, wherein the Abbe number of the second preset lenses is higher than 55. A thickness CTH of at least one of the second preset lenses and a thickness CTL of at least one of the first preset lenses satisfy 15>CTH / CTL>1.

1.

9. The optical lens according to claim 1, characterized in that: The effective aperture DS1 of the first lens and the focal length EFL of the optical lens satisfy 16>DS1 / EFL>1.

5.

10. The optical lens according to claim 1, characterized in that: The effective aperture DS1 of the first lens and the half field of view HFOV of the optical lens satisfy 25>DS1+2*tan(HFOV)>3.

11. The optical lens according to claim 1, characterized in that: The image side sag height SI1 of the first lens and the object side inflection point sag height SOC1 of the first lens satisfy SI1 / SOC1>2.

12. An optical lens according to any one of claims 1 to 11, characterized in that: The half field of view HFOV of the optical lens satisfies 85°>HFOV>45°.

13. An optical lens according to any one of claims 1 to 11, characterized in that: The aperture value F of the optical lens satisfies F<1.

9.

14. A camera module, characterized in that: It comprises a photosensitive element and an optical lens as described in any one of claims 1 to 13, wherein the photosensitive element is located on the image side of the optical lens, and the optical lens is used to image light onto the photosensitive element.

15. An electronic device, characterized in that: Including the camera module described in claim 14.

Images