An optical lens, a camera module and an electronic device

Abstract

The application relates to the field of optical lenses, in particular to an optical lens, a camera module and an electronic device. The optical lens comprises a first lens group, a second lens group and a third lens group arranged in sequence from an object side to an image side, the effective aperture diameter DSn of at least one lens in the second lens group satisfies 2.5>DSn / EPD>1.1 in relation to the entrance pupil diameter EPD of the optical lens, and the first lens close to the object side in the first lens group has a negative focal length, and the Abbe number Vd1 of the first lens satisfies Vd1>40. Based on the above scheme, the aberration can be greatly reduced, and the imaging quality is improved.

Description

Technical Field

[0001] This application relates to the field of optical lenses, and more particularly to an optical lens, a camera module, and an electronic device. Background Technology

[0002] In recent years, with the development of terminal device technology, the shooting function has become an essential feature of many smart terminal devices (such as smartphones), and the lens that enables shooting has become an indispensable component of these devices. As the demands for photography from smart terminal devices increase, how to improve image quality through lens design is a technical problem that needs to be solved. Summary of the Invention

[0003] To improve imaging quality, embodiments of this application provide an optical lens, a camera module, and an electronic device.

[0004] In a first aspect, embodiments of this application provide an optical lens comprising a first lens group, a second lens group, and a third lens group arranged sequentially from the object side to the image side; in the second lens group, at least one lens has an effective aperture DSn that satisfies 2.5 > DSn / EPD > 1.1 with the entrance pupil diameter EPD of the optical lens; in the first lens group, the first lens near the object side has a negative optical power, and the Abbe number Vd1 of the first lens satisfies Vd1 > 40.

[0005] It is understood that the lens in the second lens group is a lens that plays a core converging role in the propagation of light. In this application, 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 a large range of 2.5 > DSn / EPD > 1.1. That is, by using at least one lens, the incident angle of light is effectively reduced, the converging effect is improved, astigmatism is effectively reduced, and thus aberrations can be significantly corrected and the imaging quality is improved.

[0006] Furthermore, in this embodiment, the first lens in the first lens group near the object side can be configured to have negative optical power, and the Abbe number Vd1 of the first lens satisfies Vd1>40. It can be understood that the larger the Abbe number, the less chromatic aberration, thus effectively reducing chromatic aberration, thereby reducing aberration and further improving imaging quality.

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

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

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

[0010] In this embodiment of the 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 the setting of a reasonable physical length of the lens, so that the lens length is sufficient to place the lens used to correct aberrations.

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

[0012] In this embodiment of the application, astigmatism in aberrations can be effectively corrected by limiting the ratio of the object-side height to the image-side height of at least one lens in the second lens group.

[0013] In one possible implementation of the first aspect described above, 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.

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

[0015] In one possible implementation of the first aspect described above, 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.

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

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

[0018] In this embodiment of the application, chromatic aberration can be eliminated by using low Abbe number lenses in conjunction with high Abbe number lenses.

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

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

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

[0022] In this embodiment of the application, by limiting the ratio of the effective aperture of the first lens to the focal length of the optical lens, the required aperture size of the optical lens can be reduced.

[0023] In one possible implementation of the first aspect above, 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.

[0024] In this embodiment of the application, by limiting the mathematical relationship between the effective aperture of the first lens and the half field of view of the optical lens, the required aperture size of the optical lens can be reduced.

[0025] In one possible implementation of the first aspect described above, the image-side sagitta SI1 of the first lens and the object-side inflection point sagitta SOC1 of the first lens satisfy SI1 / SOC1 > 2.

[0026] In this embodiment of the application, by limiting the ratio of the image-side sagittal height of the first lens to the object-side inflection point sagittal height of the first lens, the optical lens can adopt an aspherical surface shape, thereby reducing the lens height of the optical lens.

[0027] In one possible implementation of the first aspect described above, the half field of view (HFOV) of the optical lens satisfies 85° > HFOV > 45°.

[0028] In this embodiment of the application, when the half field of view of the optical lens meets the above-mentioned range, a wide-angle or ultra-wide-angle lens can be achieved.

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

[0030] In this embodiment of the application, a large aperture can be achieved when the aperture value of the optical lens meets the above-mentioned range.

[0031] Secondly, embodiments of this application provide a camera module, including a photosensitive element and an optical lens as described in 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] Thirdly, embodiments of this application provide an electronic device including the camera module described in the second aspect above. Attached Figure Description

[0033] To more clearly illustrate the technical solutions and advantages in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 A schematic diagram of the back of an electronic device is shown according to this application;

[0035] Figure 2 A schematic diagram of a camera module is shown according to an embodiment of this application;

[0036] Figure 3A A schematic diagram of the structure of a camera module is shown according to the first embodiment of this application;

[0037] Figure 3B A schematic diagram of the chromatic aberration correction performance of an optical lens is shown according to the first embodiment of this application;

[0038] Figure 3C A schematic diagram of the astigmatism correction performance of an optical lens is shown according to the first embodiment of this application;

[0039] Figure 3D A schematic diagram of the distortion correction performance of an optical lens is shown according to the first embodiment of this application;

[0040] Figure 4A A schematic diagram of the structure of a camera module is shown according to a second embodiment of this application;

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

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

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

[0044] Figure 5A A schematic diagram of the structure of a camera module is shown according to a third embodiment of this application;

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

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

[0047] Figure 5D A schematic diagram of the distortion correction performance of an optical lens is shown according to the third embodiment of this application;

[0048] Figure 6A A schematic diagram of the structure of a camera module is shown according to the fourth embodiment of this application;

[0049] Figure 6B A schematic diagram of the chromatic aberration correction performance of an optical lens is shown according to the fourth embodiment of this application;

[0050] Figure 6C A schematic diagram of the astigmatism correction performance of an optical lens is shown according to the fourth embodiment of this application;

[0051] Figure 6D A schematic diagram of the distortion correction performance of an optical lens is shown according to the fourth embodiment of this application;

[0052] Figure 7A A schematic diagram of the structure of a camera module is shown according to the fifth embodiment of this application;

[0053] Figure 7B A schematic diagram of the chromatic aberration correction performance of an optical lens is shown according to the fifth embodiment of this application;

[0054] Figure 7C A schematic diagram of the astigmatism correction performance of an optical lens is shown according to the fifth embodiment of this application;

[0055] Figure 7D A schematic diagram of the distortion correction performance of an optical lens is shown according to the fifth embodiment of this application;

[0056] Figure 8A A schematic diagram of the structure of a camera module is shown according to the sixth embodiment of this application;

[0057] Figure 8B A schematic diagram of the chromatic aberration correction performance of an optical lens is shown according to the sixth embodiment of this application;

[0058] Figure 8C A schematic diagram of the astigmatism correction performance of an optical lens is shown according to the sixth embodiment of this application;

[0059] Figure 8D A schematic diagram of the distortion correction performance of an optical lens is shown according to the sixth embodiment of this application;

[0060] Figure 9A A schematic diagram of the structure of a camera module is shown according to the seventh embodiment of this application;

[0061] Figure 9B A schematic diagram of the chromatic aberration correction performance of an optical lens is shown according to the seventh embodiment of this application;

[0062] Figure 9C A schematic diagram of the astigmatism correction performance of an optical lens is shown according to the seventh embodiment of this application;

[0063] Figure 9D A schematic diagram of the distortion correction performance of an optical lens is shown according to the seventh embodiment of this application. Detailed Implementation

[0064] For ease of understanding, the technical terms used in this application will be explained and described below.

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

[0066] Aperture value, also known as F-number (FNO), is a relative value derived from the lens's focal length divided by the lens's entrance pupil diameter (the reciprocal of the relative aperture). A smaller aperture value allows more light to enter the lens in the same unit of time. A smaller aperture value results in a shallower depth of field, blurring the background in the photograph.

[0067] Total track length (TTL) refers to the total length from the object side of the lens closest to the object side to the image plane, and is a major 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 higher the refractive index of the medium, the smaller the Abbe number, and the more severe the dispersion; conversely, the lower the refractive index of the medium, the larger the Abbe number, and the less severe the dispersion.

[0069] The object side is defined by the lens, with the side containing the object to be imaged being the boundary.

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

[0071] Image height (ImgH) is half the diagonal length of the effective pixel area on the image sensor, which is also the image height of the imaging surface.

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

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

[0074] The field of view (FOV) in optical instruments is the angle between the two edges of the lens, representing the maximum range through which the image of the target object can pass through the lens. The size of the FOV determines the field of view of the optical instrument; a larger FOV results in a wider field of view but a lower optical magnification.

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

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

[0077] Aberrations are deviations between the imaging result and the ideal imaging condition in a real optical system. Aberrations include field curvature, astigmatism, distortion, chromatic aberration, and so on.

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

[0079] Please see Figure 1 , Figure 1 This is a schematic diagram of the back of an electronic device shown in this application. The electronic device 100 can be a mobile phone, digital tablet, laptop, camcorder, video recorder, camera, smart TV, network monitoring equipment, motion-sensing game console, dashcam, reversing camera, wearable electronic device, small drone, 3D image capturing device, or other form of device with photographing or video recording functions. The following description uses a mobile phone as an example of the electronic device 100.

[0080] The electronic device 100 includes a camera module 1, an image processor 2, and a housing 3. The housing 3 has a light-transmitting hole 31, and the light-incident side of the camera module 1 is positioned opposite to the light-transmitting hole 31 of the housing 3. The camera module includes an optical lens 10; for illustrative purposes, the optical lens 10 is not shown in the diagram. Figure 1 As shown in the diagram, both the lens camera module 1 and the image processor 2 are housed inside the housing 3. The image processor 2 is communicatively connected to the camera module 1. The camera module 1 acquires image data and inputs it into the image processor 2, which then processes the output image data. It should be noted that... Figure 1 This is merely a schematic diagram of the structure of an embodiment of this application, and the structures of the camera module 1, image processor 2, and housing 3 shown are for illustrative purposes only.

[0081] Image processor 2 can be a standalone image processing chip or a digital signal processing (DSP) chip, used to transmit data acquired by the photosensitive element of camera module 1 to the central processing unit and refresh the photosensitive element in a timely and rapid manner. 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 located on the back of the electronic device 100 and serves as the rear camera of the electronic device 100. It is understood that in some embodiments, the camera module 1 may also be located on the front of the electronic device 100, serving as the front camera of the electronic device 100. Both the front and rear cameras can be used for selfies or for the photographer to capture images of other objects. It should be understood that... Figure 1 The mounting position of the camera module 1 in the illustrated embodiment of the electronic device 100 is merely illustrative. In some other embodiments, the camera module 1 may also be mounted in other locations on the electronic device 100, such as on a component that is movable or rotatable relative to the electronic device 100.

[0083] Currently, with the increasing demands for shooting quality, improving image quality is a technical problem that needs to be solved.

[0084] This application provides an optical lens, a camera module, and an electronic device. The optical lens 10 includes a first lens group, a second lens group, and a third lens group arranged sequentially from the object side to the image side. In the second lens group, at least one lens has an effective aperture DSn that satisfies the condition 2.5 > DSn / EPD > 1.1 with respect to the entrance pupil diameter EPD of the optical lens. It can be understood that the lenses in the second lens group play a core converging role during light propagation. This application sets the effective aperture DSn of at least one lens in the second lens group to satisfy a large range of 2.5 > DSn / EPD > 1.1 with respect to the entrance pupil diameter EPD of the optical lens. This means that at least one lens effectively reduces the incident angle of light, improves the converging effect, effectively reduces astigmatism, thereby significantly correcting aberrations and improving image quality.

[0085] Furthermore, in this embodiment, the first lens in the first lens group near the object side can be configured to have negative optical power, and the Abbe number Vd1 of the first lens satisfies Vd1>40. It can be understood that the larger the Abbe number, the less chromatic aberration, thus effectively reducing chromatic aberration, thereby reducing aberration and further improving imaging quality.

[0086] The structure of camera module 1 and the settings of related optical parameters are described in detail below with reference to the attached diagram.

[0087] refer to Figure 2The camera module 1 includes an optical lens 10 and a photosensitive element 20. Light from the scene passes through the optical lens 10 to form a clear image on the imaging surface, and the image is recorded by the photosensitive element 20 located on the imaging surface. The imaging surface refers to the plane on which the image of the scene is formed after being imaged by the optical lens 10. The optical lens 10 includes multiple lenses arranged sequentially from the object side to the image side, and the lenses work together to form an image with better imaging effect. The object side refers to the side where the subject is located, and the image side refers to the side where the imaging plane is located.

[0088] The camera module 1 may also include an infrared filter 30, which can be fixed on the circuit board and located between the optical lens 10 and the photosensitive element 20. It can be understood that the light passing through the optical lens 10 shines on the infrared filter 30 and is 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. For example, as... 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 alternative embodiments, the first lens group may include two lenses, the second lens group may include three lenses, and the third lens group may 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 alternative 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 alternative 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 alternative 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 is understood that the settings of each lens group described above are merely illustrative examples, and can be set in other ways depending on actual needs.

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

[0096] 2.5 > DSN / EPD > 1.1;

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

[0098] In this embodiment, the second lens group acts as a core converging lens. By limiting the ratio of the effective aperture to the entrance pupil diameter of at least one lens in the second lens group, this application can significantly reduce aberrations and greatly improve the imaging quality of the optical lens 10 when the ratio satisfies the above conditions. For example, the ratio can be 2.4, 2.2, 2.0, 1.8, 1.6, 1.4, 1.2, etc. It can be understood that for ultra-wide-angle, large-aperture lenses, the larger the ratio of the effective aperture to the entrance pupil diameter of the lens that acts as a core converging lens, 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, which is closer to the object side in the first lens group, and the first lens L1 has negative optical power.

[0102] In this embodiment, 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 function as a diverging light source, increasing the field of view of the first lens L1, thereby making the optical lens 10 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 optical lens 10, and EFL is the focal length of optical lens 10.

[0106] In this embodiment, by limiting the ratio of lens height to focal length, the optical lens 10 can have a reasonable physical length, sufficient to accommodate the lens used for aberration correction, without being excessively long. For example, the above arrangement could 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 vector height of at least one lens in the second lens group, and SIn is the image vector height Sin of the at least one lens.

[0110] In this embodiment of the application, astigmatism in aberrations can be effectively corrected by limiting the ratio of the object-side height to the image-side height of at least one lens in the second lens group. For example, the 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] Wherein, DS1 is the effective aperture of the first lens L1, and DSi is the effective aperture of the i-th lens in the third lens group that is closest to the image side.

[0114] In this embodiment, by limiting the ratio of the effective aperture of the first lens L1 to the effective aperture of the last lens, field curvature in aberrations can be effectively corrected when the ratio is within a preset range. For example, the 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 this embodiment, by limiting the ratio of the effective aperture of the last lens to the image height of the optical lens 10, field curvature in aberrations can be effectively corrected when the ratio is within a preset range. For example, the 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 of less than 30 and multiple second preset lenses with an Abbe number of more 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 this embodiment, by limiting the thickness ratio of the high Abbe number lens and the low Abbe number lens, chromatic aberration in aberrations can be effectively corrected when the thickness ratio is within a preset range. For example, the aforementioned 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 this embodiment, by limiting the ratio of the effective aperture of the first lens L1 to the focal length of the optical lens 10, the opening size of the electronic device 100 corresponding to the optical lens 10 can be reduced when the ratio is within a preset range. For example, the 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 of the optical lens 10.

[0130] In this embodiment of the application, by limiting the mathematical relationship between the effective aperture of the first lens L1 and the half field of view of the optical lens 10, the aperture size of the electronic device 100 corresponding to the optical lens 10 can be reduced. For example, the above expression can take values ​​such as 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] Where SI1 is the image-side sagittal height of the first lens L1, and SOC1 is the object-side inflection point sagittal height of the first lens L1.

[0134] In this embodiment, by limiting the ratio of the image-side sagitta to the object-side inflection point sagitta of the first lens L1, when the ratio is greater than 2, the optical lens 10 can adopt an aspherical surface shape, thereby reducing the lens height of the optical lens 10. For example, the 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] HFOV is the half field of view of the optical lens 10.

[0138] In this embodiment, when the half-field angle of the optical lens 10 meets the above-mentioned range, a wide-angle or ultra-wide-angle view can be achieved. For example, the half-field 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] Where F is the aperture value of the optical lens 10.

[0142] In this embodiment, a large aperture can be achieved when the aperture value of the optical lens 10 meets the above-mentioned range. 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, by setting the parameters of each lens and the coordination of the parameters between the lenses, enables the optical lens 10 to fully correct aberrations while having wide-angle and large aperture characteristics, resulting in better imaging effect and reducing the opening size of the electronic device 100.

[0144] It is understandable that the different constraints on the various parameters of optical lenses mentioned above can exist independently or in combination. When all the above constraints are combined, the optical lens can have a better size or achieve better image quality.

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

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

[0147] In the first embodiment, the optical lens 10 includes an aperture stop and seven lenses. Specifically, a first lens group, a second lens group, and a third lens group are arranged sequentially from the object side to the image side. 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 this embodiment, the object-side surface of the first lens L1 is concave near the optical axis, and the image-side surface is also 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 also 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 also convex near the optical axis. In the second lens group, the effective aperture DSn of the third lens L3, fourth lens L4, and fifth lens L5 satisfies the condition 2.5 > DSn / EPD > 1.1 with respect to the entrance pupil diameter EPD of the optical lens 10. 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 same applies to the effective apertures of the other lenses. It can be understood that the second lens group plays a core converging role, which can significantly 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 = 1.02, which can effectively correct field curvature in aberrations. The effective aperture DS7 of the seventh lens L7 and the image height ImgH of the optical lens 10 satisfy DS7 / ImgH = 1.85, which can effectively correct field curvature in aberrations.

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

[0152] Based on the relationships described above, the optical design parameters of the optical lens 10 in the first embodiment of this application are as follows:

[0153] Table 1. Structural data of each component of the camera module 1 in the first embodiment.

[0154]

[0155]

[0156] The meanings of the symbols in the table above are as follows:

[0157] OBJ: Object distance;

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

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

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

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

[0162] STO: Optical stop;

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

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

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

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

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

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

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

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

[0171] S13: The 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 external filter 30;

[0175] S17: Imaging plane.

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

[0177] Table 2 Aspherical coefficients of the optical lens 10 in 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] Where K represents the conic coefficient in the equation of the aspherical curve, and A4, A6, A8, A10, A12, A14, A16, and A18 represent the 4th, 6th, 8th, 10th, 12th, 14th, 16th, and 18th order aspherical coefficients of each surface. It should be noted that all parameters in the table are expressed in scientific notation. In this application, the symbols K, A4, A6, A8, A10, A12, A14, A16, and A18, unless otherwise explained, will have the same meaning when they appear again thereafter, and will not be repeated here.

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

[0184]

[0185] Where z is the optical surface sagitta; k is the conic coefficient; c is the radius of curvature; r is the radius height along the optical axis; r² = x² + y²; A i These are the polynomial coefficients; r i It is a standardized radial coordinate.

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

[0187] Figure 3B The axial chromatic aberration of light with wavelengths of 650 nm, 610 nm, 550 nm, 510 nm, and 470 nm after passing through the optical lens 10 of the first embodiment is shown. The vertical axis represents the normalized pupil coordinates, and the horizontal axis represents the axial chromatic aberration, with units in millimeters. Figure 3B As can be seen from this embodiment, the axial chromatic difference of the optical lens 10 in each state is controlled within a very small range.

[0188] Figure 3C The diagram illustrates the astigmatism of light with a wavelength of 550 nm after passing through the optical lens 10 of the first embodiment. The solid line represents the meridional astigmatism of 550 nm light after passing through the optical lens 10, and the dashed line represents the sagittal astigmatism. The vertical axis represents the object angle, and the horizontal axis represents the astigmatism values ​​in the meridional (dashed) and sagittal (solid) directions, in millimeters. Figure 3C As can be seen from this embodiment, the astigmatism of the optical lens 10 is controlled within a very small range in all states.

[0189] Figure 3D The distortion of light with a wavelength of 550 nm after passing through the optical lens 10 of the first embodiment is shown. The vertical axis represents the object angle, and the horizontal axis represents the optical distortion value corresponding to different fields of view, in percentage form. Figure 3C As can be seen, in this embodiment, the distortion of the optical lens 10 is controlled within a very small range.

[0190] This embodiment, by setting the parameters of each lens and the coordination of the parameters between the lenses, enables the optical lens 10 to fully correct aberrations while having wide-angle and large aperture characteristics, resulting in better imaging effect and reducing the opening size of the electronic device 100.

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

[0192] In the second embodiment, the optical lens 10 includes an aperture stop and seven lenses. Specifically, a first lens group, a second lens group, and a third lens group are arranged sequentially from the object side to the image side. 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 this embodiment, the object-side surface of the first lens L1 is concave near the optical axis, and the image-side surface is also 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 also 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 also 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 also concave near the optical axis. In the second lens group, the effective aperture DSn of the third lens L3, fourth lens L4, and fifth lens L5 satisfies the condition 2.5 > DSn / EPD > 1.1 with respect to the entrance pupil diameter EPD of the optical lens 10. 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 converging role, significantly reducing aberrations and greatly improving 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 = 1, which can effectively correct field curvature in aberrations. The effective aperture DS7 of the seventh lens L7 and the image height ImgH of the optical lens 10 satisfy DS7 / ImgH = 1.66, which can effectively correct field curvature in aberrations.

[0196] In this embodiment, 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. The ratio of the thickness CTH of any one 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 chromatic aberration in aberrations.

[0197] Based on the relationships described above, the optical design parameters of the optical lens 10 in the second embodiment of this application are as follows:

[0198] Table 3 Structural data of each component of the camera module 1 in the second embodiment.

[0199]

[0200]

[0201] Table 4 Aspherical coefficients of the optical lens 10 in 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, the individual lenses of the optical lens 10 of this embodiment can be designed:

[0206]

[0207] Where z is the optical surface sagitta; k is the conic coefficient; c is the radius of curvature; r is the radius height along the optical axis; r² = x² + y²; A i These are the polynomial coefficients; r i It is a standardized radial coordinate.

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

[0209] Figure 4B The axial chromatic aberration of light with wavelengths of 650 nm, 610 nm, 550 nm, 510 nm, and 470 nm after passing through the optical lens 10 of the second embodiment is shown. The vertical axis represents the normalized pupil coordinates, and the horizontal axis represents the axial chromatic aberration, with units in millimeters. Figure 4B As can be seen from this embodiment, the axial chromatic difference of the optical lens 10 in each state is controlled within a very small range.

[0210] Figure 4C The diagram illustrates the astigmatism of light with a wavelength of 550 nm after passing through the optical lens 10 of the second embodiment. The solid line represents the meridional astigmatism of 550 nm light after passing through the optical lens 10, and the dashed line represents the sagittal astigmatism. The vertical axis represents the object angle, and the horizontal axis represents the astigmatism values ​​in the meridional (dashed) and sagittal (solid) directions, in millimeters. Figure 4C As can be seen from this embodiment, the astigmatism of the optical lens 10 is controlled within a very small range in all states.

[0211] Figure 4D The distortion of light with a wavelength of 550 nm after passing through the optical lens 10 of the second embodiment is shown. The vertical axis represents the object angle, and the horizontal axis represents the optical distortion value corresponding to different fields of view, in percentage form. Figure 4C As can be seen, in this embodiment, the distortion of the optical lens 10 is controlled within a very small range.

[0212] This embodiment, by setting the parameters of each lens and the coordination of the parameters between the lenses, enables the optical lens 10 to fully correct aberrations while having wide-angle and large aperture characteristics, resulting in better imaging effect and reducing the opening size of the electronic device 100.

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

[0214] In the third embodiment, the optical lens 10 includes an aperture stop and seven lenses. Specifically, a first lens group, a second lens group, and a third lens group are arranged sequentially from the object side to the image side. 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 this embodiment, the object-side surface of the first lens L1 is concave near the optical axis, and the image-side surface is also 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 also 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 also convex near the optical axis. In the second lens group, the effective aperture DSn of the third lens L3, fourth lens L4, and fifth lens L5 satisfies the condition 2.5 > DSn / EPD > 1.1 with respect to the entrance pupil diameter EPD of the optical lens 10. 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 converging role, significantly reducing aberrations and greatly improving 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 also 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 = 1.01, which effectively corrects field curvature in aberrations. The effective aperture DS7 of the seventh lens L7 and the image height ImgH of the optical lens 10 satisfy DS7 / ImgH = 1.73, which also effectively corrects field curvature in aberrations.

[0218] In this embodiment, 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. 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 chromatic aberration in aberrations.

[0219] Based on the relationships described above, the optical design parameters of the optical lens 10 in the third embodiment of this application are as follows:

[0220] Table 5. Structural data of each component of the camera module 1 in the third embodiment.

[0221]

[0222]

[0223] Table 6 Aspherical coefficients of the optical lens 10 in 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, the individual lenses of the optical lens 10 of this embodiment can be designed:

[0229]

[0230] Where z is the optical surface sagitta; k is the conic coefficient; c is the radius of curvature; r is the radius height along the optical axis; r² = x² + y²; A i These are the polynomial coefficients; r i It is a standardized radial coordinate.

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

[0232] Figure 5B The axial chromatic aberration of light with wavelengths of 650 nm, 610 nm, 550 nm, 510 nm, and 470 nm after passing through the optical lens 10 of the third embodiment is shown. The vertical axis represents the normalized pupil coordinates, and the horizontal axis represents the axial chromatic aberration, with units in millimeters. Figure 5B As can be seen from this embodiment, the axial chromatic difference of the optical lens 10 in each state is controlled within a very small range.

[0233] Figure 5C The diagram illustrates the astigmatism of light with a wavelength of 550 nm after passing through the optical lens 10 of the third embodiment. The solid line represents the meridional astigmatism of 550 nm light after passing through the optical lens 10, and the dashed line represents the sagittal astigmatism. The vertical axis represents the object angle, and the horizontal axis represents the astigmatism values ​​in the meridional (dashed) and sagittal (solid) directions, in millimeters. Figure 5C As can be seen from this embodiment, the astigmatism of the optical lens 10 is controlled within a very small range in all states.

[0234] Figure 5D The distortion of light with a wavelength of 550 nm after passing through the optical lens 10 of the third embodiment is shown. The vertical axis represents the object angle, and the horizontal axis represents the optical distortion value corresponding to different fields of view, in percentage form. Figure 5C As can be seen, in this embodiment, the distortion of the optical lens 10 is controlled within a very small range.

[0235] This embodiment, by setting the parameters of each lens and the coordination of the parameters between the lenses, enables the optical lens 10 to fully correct aberrations while having wide-angle and large aperture characteristics, resulting in better imaging effect and reducing the opening size of the electronic device 100.

[0236] Figure 6A The diagram illustrates the structure of the camera module 1 according to the fourth embodiment of this application.

[0237] In the fourth embodiment, the optical lens 10 includes an aperture stop and eight lenses. Specifically, a first lens group, a second lens group, and a third lens group are arranged sequentially from the object side to the image side. 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 this embodiment, the object-side surface of the first lens L1 is concave near the optical axis, and the image-side surface is also 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. In the second lens group, the effective aperture DSn of the third lens L3, fourth lens L4, and fifth lens L5 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 converging role, which can significantly 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 = 0.77, which can effectively correct field curvature in aberrations. The effective aperture DS8 of the eighth lens L8 and the image height ImgH of the optical lens 10 satisfy DS8 / ImgH = 1.82, which can effectively correct field curvature in aberrations.

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

[0242] Based on the relationships described above, the optical design parameters of the optical lens 10 in the fourth embodiment of this application are as follows:

[0243] Table 7 Structural data of each component of the camera module 1 in the fourth embodiment.

[0244]

[0245]

[0246] The meanings of some symbols in the table above are as follows:

[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 external filter 30;

[0251] S19: Imaging plane.

[0252] Table 8 Aspherical coefficients of the optical lens 10 in 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, the individual lenses of the optical lens 10 of this embodiment can be designed:

[0257]

[0258] Where z is the optical surface sagitta; k is the conic coefficient; c is the radius of curvature; r is the radius height along the optical axis; r² = x² + y²; A i These are the polynomial coefficients; r i It is a standardized radial coordinate.

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

[0260] Figure 6B The diagram shows the axial chromatic aberration of light with wavelengths of 650 nm, 610 nm, 550 nm, 510 nm, and 470 nm after passing through the optical lens 10 of the fourth embodiment. The vertical axis represents the normalized pupil coordinates, and the horizontal axis represents the axial chromatic aberration, with units in millimeters. Figure 6B As can be seen from this embodiment, the axial chromatic difference of the optical lens 10 in each state is controlled within a very small range.

[0261] Figure 6C The diagram illustrates the astigmatism of light with a wavelength of 550 nm after passing through the optical lens 10 of the fourth embodiment. The solid line represents the meridional astigmatism of 550 nm light after passing through the optical lens 10, and the dashed line represents the sagittal astigmatism. The vertical axis represents the object angle, and the horizontal axis represents the astigmatism values ​​in the meridional (dashed) and sagittal (solid) directions, in millimeters. Figure 6CAs can be seen from this embodiment, the astigmatism of the optical lens 10 is controlled within a very small range in all states.

[0262] Figure 6D The distortion of light with a wavelength of 550 nm after passing through the optical lens 10 of the fourth embodiment is shown. The vertical axis represents the object angle, and the horizontal axis represents the optical distortion value corresponding to different fields of view, in percentage form. Figure 6C As can be seen, in this embodiment, the distortion of the optical lens 10 is controlled within a very small range.

[0263] This embodiment, by setting the parameters of each lens and the coordination of the parameters between the lenses, enables the optical lens 10 to fully correct aberrations while having wide-angle and large aperture characteristics, resulting in better imaging effect and reducing the opening size of the electronic device 100.

[0264] Figure 7A The diagram illustrates the structure of the camera module 1 according to the fifth embodiment of this application.

[0265] In the fifth embodiment, the optical lens 10 includes an aperture stop and seven lenses. Specifically, a first lens group, a second lens group, and a third lens group are arranged sequentially from the object side to the image side. 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 this embodiment, the object-side surface of the first lens L1 is concave near the optical axis, and the image-side surface is also 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 also 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 also 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. In the second lens group, the effective aperture DSn of the third lens L3, fourth lens L4, and fifth lens L5 satisfies the condition 2.5 > DSn / EPD > 1.1 with respect to the entrance pupil diameter EPD of the optical lens 10. 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 converging role, significantly reducing aberrations and greatly improving 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 also 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 a DS1 / DS7 ratio of 0.9, which effectively corrects field curvature in aberrations. The effective aperture DS7 of the seventh lens L7 and the image height ImgH of the optical lens 10 satisfy a DS7 / ImgH ratio of 1.79, which also effectively corrects field curvature in aberrations.

[0269] In this embodiment, 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. 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 chromatic aberration in aberrations.

[0270] Based on the relationships described above, the optical design parameters of the optical lens 10 in the fifth embodiment of this application are as follows:

[0271] Table 9 Structural data of each component of the camera module 1 in the fifth embodiment.

[0272]

[0273]

[0274] Table 10 Aspherical coefficients of the optical lens 10 in 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, the individual lenses of the optical lens 10 of this embodiment can be designed:

[0279]

[0280] Where z(x,y) is the optical surface sagitta; k is the conic coefficient; c is the radius of curvature; r is the radius height along the optical axis; r² = x² + y²; A i These are the polynomial coefficients; r i It is a standardized radial coordinate.

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

[0282] Figure 7B The axial chromatic aberration of light with wavelengths of 650 nm, 610 nm, 550 nm, 510 nm, and 470 nm after passing through the optical lens 10 of the fifth embodiment is shown. The vertical axis represents the normalized pupil coordinates, and the horizontal axis represents the axial chromatic aberration, with units in millimeters. Figure 7B As can be seen from this embodiment, the axial chromatic difference of the optical lens 10 in each state is controlled within a very small range.

[0283] Figure 7C The diagram illustrates the astigmatism of light with a wavelength of 550 nm after passing through the optical lens 10 of the fifth embodiment. The solid line represents the meridional astigmatism of 550 nm light after passing through the optical lens 10, and the dashed line represents the sagittal astigmatism. The vertical axis represents the object angle, and the horizontal axis represents the astigmatism values ​​in the meridional (dashed) and sagittal (solid) directions, in millimeters. Figure 7C As can be seen from this embodiment, the astigmatism of the optical lens 10 is controlled within a very small range in all states.

[0284] Figure 7D The distortion of light with a wavelength of 550 nm after passing through the optical lens 10 of the fifth embodiment is shown. The vertical axis represents the object angle, and the horizontal axis represents the optical distortion value corresponding to different fields of view, in percentage form. Figure 7C As can be seen, in this embodiment, the distortion of the optical lens 10 is controlled within a very small range.

[0285] This embodiment, by setting the parameters of each lens and the coordination of the parameters between the lenses, enables the optical lens 10 to fully correct aberrations while having wide-angle and large aperture characteristics, resulting in better imaging effect and reducing the opening size of the electronic device 100.

[0286] Figure 8A The diagram illustrates the structure of the camera module 1 according to the sixth embodiment of this application.

[0287] In the sixth embodiment, the optical lens 10 includes an aperture stop and seven lenses. Specifically, a first lens group, a second lens group, and a third lens group are arranged sequentially from the object side to the image side. 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 this embodiment, the object-side surface of the first lens L1 is concave near the optical axis, and the image-side surface is also 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 also 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 also convex near the optical axis. In the second lens group, the effective aperture DSn of the third lens L3, fourth lens L4, and fifth lens L5 satisfies the condition 2.5 > DSn / EPD > 1.1 with respect to the entrance pupil diameter EPD of the optical lens 10. 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 converging role, significantly reducing aberrations and greatly improving 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 = 0.84, which can effectively correct field curvature in aberrations. The effective aperture DS7 of the seventh lens L7 and the image height ImgH of the optical lens 10 satisfy DS7 / ImgH = 1.75, which can effectively correct field curvature in aberrations.

[0291] In this embodiment, 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. 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 chromatic aberration in aberrations.

[0292] Based on the relationships described above, the optical design parameters of the optical lens 10 in the sixth embodiment of this application are as follows:

[0293] Table 11 Structural data of each component of the camera module 1 in the sixth embodiment

[0294]

[0295]

[0296] Table 12 Aspherical coefficients of the optical lens 10 in 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, the individual lenses of the optical lens 10 of this embodiment can be designed:

[0302]

[0303] Where z is the optical surface sagitta; k is the conic coefficient; c is the radius of curvature; r is the radius height along the optical axis; r² = x² + y²; A i These are the polynomial coefficients; r i It is a standardized radial coordinate.

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

[0305] Figure 8B The axial chromatic aberration of light with wavelengths of 650 nm, 610 nm, 550 nm, 510 nm, and 470 nm after passing through the optical lens 10 of the sixth embodiment is shown. The vertical axis represents the normalized pupil coordinates, and the horizontal axis represents the axial chromatic aberration, with units in millimeters. Figure 8B As can be seen from this embodiment, the axial chromatic difference of the optical lens 10 in each state is controlled within a very small range.

[0306] Figure 8C The diagram illustrates the astigmatism of light with a wavelength of 550 nm after passing through the optical lens 10 of the sixth embodiment. The solid line represents the meridional astigmatism of 550 nm light after passing through the optical lens 10, and the dashed line represents the sagittal astigmatism. The vertical axis represents the object angle, and the horizontal axis represents the astigmatism values ​​in the meridional (dashed) and sagittal (solid) directions, in millimeters. Figure 8C As can be seen from this embodiment, the astigmatism of the optical lens 10 is controlled within a very small range in all states.

[0307] Figure 8D The distortion of light with a wavelength of 550 nm after passing through the optical lens 10 of the sixth embodiment is shown. The vertical axis represents the object angle, and the horizontal axis represents the optical distortion value corresponding to different fields of view, in percentage form. Figure 8C As can be seen, in this embodiment, the distortion of the optical lens 10 is controlled within a very small range.

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

[0309] In the first embodiment, the optical lens 10 includes an aperture stop and six lenses. Specifically, a first lens group, a second lens group, and a third lens group are arranged sequentially from the object side to the image side. 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 this embodiment, the object-side surface of the first lens L1 is concave near the optical axis, and the image-side surface is also 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 also 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. In the second lens group, the effective aperture DSn of the third lens L3 and the fourth lens L4 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 converging role, which can significantly 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 = 0.85, which can effectively correct field curvature in aberrations. The effective aperture DS6 of the sixth lens L6 and the image height ImgH of the optical lens 10 satisfy DS6 / ImgH = 1.61, which can effectively correct field curvature in aberrations.

[0313] In this embodiment, 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. The ratio of the thickness CTH of any one 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 chromatic aberration in aberrations.

[0314] Based on the relationships described above, the optical design parameters of the optical lens 10 in the seventh embodiment of this application are as follows:

[0315] Table 13 Structural data of each component of the camera module 1 in the seventh embodiment

[0316]

[0317]

[0318] Table 14 Aspherical coefficients of the optical lens 10 in 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, the individual lenses of the optical lens 10 of this embodiment can be designed:

[0323]

[0324] Where z is the optical surface sagitta; k is the conic coefficient; c is the radius of curvature; r is the radius height along the optical axis; r² = x² + y²; A i These are the polynomial coefficients; r i It is a standardized radial coordinate.

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

[0326] Figure 9B The axial chromatic aberration of light with wavelengths of 650 nm, 610 nm, 550 nm, 510 nm, and 470 nm after passing through the optical lens 10 of the seventh embodiment is shown. The vertical axis represents the normalized pupil coordinates, and the horizontal axis represents the axial chromatic aberration, with units in millimeters. Figure 9B As can be seen from this embodiment, the axial chromatic difference of the optical lens 10 in each state is controlled within a very small range.

[0327] Figure 9C The diagram illustrates the astigmatism of light with a wavelength of 550 nm after passing through the optical lens 10 of the seventh embodiment. The solid line represents the meridional astigmatism of 550 nm light after passing through the optical lens 10, and the dashed line represents the sagittal astigmatism. The vertical axis represents the object angle, and the horizontal axis represents the astigmatism values ​​in the meridional (dashed) and sagittal (solid) directions, in millimeters. Figure 9CAs can be seen from this embodiment, the astigmatism of the optical lens 10 is controlled within a very small range in all states.

[0328] Figure 9D The distortion of light with a wavelength of 550 nm after passing through the optical lens 10 of the seventh embodiment is shown. The vertical axis represents the object angle, and the horizontal axis represents the optical distortion value corresponding to different fields of view, in percentage form. Figure 9C As can be seen, in this embodiment, the distortion of the optical lens 10 is controlled within a very small range.

[0329] This embodiment, by setting the parameters of each lens and the coordination of the parameters between the lenses, enables the optical lens 10 to fully correct aberrations while having wide-angle and large aperture characteristics, resulting in better imaging effect and reducing 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 embodiments.

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

[0332]

[0333]

[0334] Among them, one to seven refer to the first to seventh implementation methods.

[0335] As shown in the table above, in the first to seventh embodiments described above, the ratio of the lens height (TTL) to the focal length (EFL) of the optical lens 10, TTL / EFL, are 4.27, 4.87, 4.62, 4.63, 3.29, 3.10, and 3.16, respectively, giving the optical lens 10 a reasonable physical length sufficient to accommodate lenses for aberration correction. The half field of view (HFOV) of the optical lens 10 are 62, 58.00, 61, 63, 61, 62, and 60, respectively, enabling wide-angle or ultra-wide-angle viewing. The aperture values ​​(F) of the optical lens 10 are 1.0, 1.0, 1.0, 1.0, 1.4, 1.2, and 1.8, respectively, enabling large apertures.

[0336] The first lens L1 has a negative optical power and an Abbe number Vd1 of 56, enabling it to diverge light and increase its field of view. In the first to seventh embodiments, the ratio of the effective aperture DS1 of the first lens L1 to the focal length EFL of the optical lens 10, DS1 / EFL, are 3.10, 2.73, 2.85, 2.31, 2.63, 2.37, and 2.23, respectively, which can reduce the aperture size of the electronic device 100 corresponding to the optical lens 10.

[0337] In the seven embodiments described above, 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) as 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 of the image-side sagitta SI1 of the first lens L1 to the object-side inflection point sagitta SOC1 of the first lens L1, SI1 / SOC1, are 16.67, 10.00, 8.50, 17.38, 9.48, 7.97, and 14.00, respectively, meaning that 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 ratio of the object-space vector SO3 to the image-space vector SI3 of the third lens L3, SO3 / SI3, are 0.38, 0.13, 0.32, 0.09, 0.16, 0.10, and 0.51, respectively, which can effectively correct astigmatism in aberrations.

[0339] In the seven embodiments described above, the effective aperture DSn of each lens in the second lens group and the entrance pupil diameter EPD of the optical lens 10 both 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 converging role, which can significantly reduce aberrations and greatly improve the imaging quality of the optical lens 10.

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

[0341] In this embodiment, 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 aberrations.

[0342] This embodiment, by setting the parameters of each lens and the coordination of the parameters between the lenses, enables the optical lens 10 to fully correct aberrations while having wide-angle and large aperture characteristics, resulting in better imaging effect and reducing the opening size of the electronic device 100.

[0343] Accordingly, this application also provides an electronic device, including a housing, a processor, and the aforementioned camera module. The camera module is disposed on the front and / or back of the housing, and is used to transmit image data to the processor, which is used to process the image data.

[0344] In the accompanying drawings, some structural or methodological 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 necessary. Rather, in some embodiments, these features may be illustrated in a manner and / or order different from that shown in the illustrative drawings. Furthermore, the inclusion of structural or methodological features in a particular drawing does not mean that all embodiments need to include such features; in some embodiments, these features may be omitted, or they may be combined with other features.

[0345] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, the use of the technical solutions of this application is not limited to the various applications mentioned in the embodiments of this patent. Various structures and modifications can be easily implemented with reference to the technical solutions of this application to achieve the various beneficial effects mentioned herein. Within the scope of knowledge possessed by those skilled in the art, all changes made without departing from the spirit of this application should be considered within the scope of this patent application.

Claims

1. An optical lens, characterized in that, The optical lens includes a first lens group, a second lens group, and a third lens group arranged sequentially from the object side to the image side; In the second lens group, at least one lens has an effective aperture DSn that satisfies the condition 2.5 > DSn / EPD > 1.1 with respect to the entrance pupil diameter EPD of the optical lens. The first lens group consists of a first lens and a second lens. The first lens is closer to the object side than the second lens. The first lens has negative optical power and the Abbe number Vd1 of the first lens satisfies Vd1>40. The second lens has positive optical power. The second lens group has 2 or 3 lenses, and the third lens group has 2 or 3 lenses; In the second lens group, at least one lens has an object-space vector SOn and an image-space vector SIn that satisfy 0.09 ≤ SOn / SIn < 1.

2. An optical lens according to claim 1, characterized in that, The lens height TTL and the focal length EFL of the optical lens satisfy 4.87≥TTL / EFL>2.

3. An 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.

4. An 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.

5. An optical lens according to claim 1, characterized in that, The optical lens includes at least two first preset lenses, wherein the Abbe number of the first preset lenses is less than 30.

6. An optical lens according to claim 5, characterized in that, The optical lens includes multiple second preset lenses, wherein the Abbe number of the second preset lenses is higher than 55. 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.

7. An 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.

8. An 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.

9. An optical lens according to claim 1, characterized in that, The image-side inflection point inflection point of the first lens, SI1, and the object-side inflection point inflection point in the first lens, SOC1, satisfy 17.38 ≥ SI1 / SOC1 > 2.

10. An optical lens according to any one of claims 1-9, characterized in that, The half field of view (HFOV) of the optical lens satisfies 85° > HFOV > 45°.

11. An optical lens according to any one of claims 1-9, characterized in that, The aperture value F of the optical lens satisfies 1.0 ≤ F < 1.

9.

12. A camera module, characterized in that, It includes a photosensitive element and an optical lens as described in any one of claims 1-11, 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.

13. An electronic device, characterized in that, Includes the camera module as described in claim 12.

Images