Optical lens, camera module and electronic equipment

Abstract

The invention relates to the technical field of shooting, in particular to an optical lens, a camera module and electronic equipment. The optical lens comprises a first optical element and a second optical element; the first optical element comprises a first lens, a light path turning element and a second lens which are arranged from an object side to an image side, the light path turning element is used for changing an optical axis from a first direction to a second direction, the first lens has positive focal power, and the second lens has negative focal power; the first optical element is used for preventing shaking, the second optical element is used for focusing, and the object side surface of the first lens is matched with the image side surface of the second lens. By setting the rise of the image side surface and the object side surface of the first optical element and correcting the refractive index, the image side surface and the object side surface of the first optical element are relatively matched, so that the compensation of the second lens to the first lens is better, and the first optical element is small in aberration and high in definition during anti-shake; and the high-performance anti-shake capability of the optical lens can be realized.

Description

TECHNICAL FIELD

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

[0002] In recent years, with the development of technology, electronic devices are developing towards ultra-thin miniaturization, and consumers have increasingly high demands on the photographing performance of mobile phones, such as a larger target surface, a longer focal length, better anti-shake performance, and the like. These demands put higher requirements on the lenses of mobile phones.

[0003] In the prior art, for the anti-shake of a camera, a sensor anti-shake technical solution can be used, but the sensor anti-shake solution increases the length or height of the optical system. For the anti-shake of a lens, a prism anti-shake technical solution can also be used, but the prism anti-shake solution is difficult to take into account the miniaturization of the camera. SUMMARY

[0004] The purpose of the embodiments of the present application is to provide an optical lens, a camera module and an electronic device.

[0005] In a first aspect, the embodiments of the present application provide an optical lens, comprising a first optical element and a second optical element; the first optical element comprises a first lens, a light path folding element and a second lens arranged from an object side to an image side, the light path folding element is used to change the optical axis from a first direction to a second direction, the first lens has a positive focal power, and the second lens has a negative focal power; the second optical element is located on the image side of the first optical element, and the second optical element comprises at least one lens group, during the focusing process of the optical lens, the at least one lens group moves along the second direction; during the anti-shake process of the optical lens, the first optical element rotates around the first direction, and / or rotates around the second direction, and / or rotates around a third direction, the third direction is different from the first direction and the second direction; wherein the first optical element satisfies: |F1 / EFL|<10, and ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.5; wherein F1 is the focal length of the first optical element, EFL is the focal length of the optical lens, sag1 is the sagittal height of the object side surface of the first lens at a first aperture, sag2 is the sagittal height of the image side surface of the second lens at a second aperture, n1 is the refractive index of the first lens, and n2 is the refractive index of the second lens; wherein the first aperture is equal to the second aperture.

[0006] For example, the first direction and the second direction are perpendicular. The third direction is perpendicular to the first direction and the second direction.

[0007] The first lens is located on the object side of the light path folding element, the second lens is located on the image side of the light path folding element, the optical power of the first lens is positive, which is beneficial to reduce the total optical length of the optical lens and simplify the light path structure on the image side; the optical power of the second lens is negative; when the optical power of the first lens is too large, the aberration caused by the anti-shake movement of the first lens is too large, and the second lens is used to reduce the aberration caused by the first lens. And the anti-shake imaging is clearer through the movement of the light path folding element.

[0008] In addition, the first lens, the light path folding element and the second lens move synchronously for anti-shake, which is beneficial to shorten the total optical length of the camera module 30 and realize higher anti-shake performance. Thus, the optical lens of the embodiment is easy to have higher anti-shake performance and better imaging quality in a smaller size.

[0009] In the embodiment, the first optical element is located at the front end of the optical lens, has a great influence on the anti-shake and focusing of the optical lens, and has a small total focal length and a large optical power. The first optical element has a strong ability to converge light, which is beneficial to reduce the total optical length of the optical lens, that is, to improve the compactness of the optical lens, and to facilitate the miniaturization of the optical lens. In addition, the first optical element is closer to the object side in the optical lens, and the first lens and the second lens of the first optical element have good complementarity, which is beneficial to improve the anti-shake ability of the optical lens.

[0010] In addition, by setting the sag of the image side and the object side of the first optical element and correcting the refractive index, the shape of the object side and the image side of the first optical element is close to consistent, the image side and the object side of the first optical element are well matched, and the compensation of the second lens to the first lens is better. When the first optical element is anti-shaken, the aberration is small and the clarity is high, which is beneficial to realize higher anti-shake performance of the optical lens.

[0011] Thus, when the optical lens satisfies ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.5 and |F1 / EFL|<10 at the same time. At this time, the optical power of the image side and the object side of the first optical element is fully utilized, the first optical element has appropriate optical power, the performance of the first optical element is maximized, the optical lens has strong anti-shake shooting ability and high compactness.

[0012] In some embodiments, the second aperture is a diameter at any point on the image side of the second lens.

[0013] In the embodiment, all values calculated by the first lens and the second lens according to the formula one are less than 0.5, in other words, the maximum value calculated by the formula one is less than 0.5. At this time, the object side of the first lens and the image side of the second lens are equivalent to better matching, the compensation of the image side of the second lens to the object side of the first lens is stronger, and the dynamic aberration compensation capability of the first optical element is strong.

[0014] In some embodiments, the first optical element satisfies: 0.05 < (||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||)max<0.5; or, 0.05 < (||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||)max<0.3.

[0015] In the embodiment, when the value of the formula of the embodiment is smaller, the surface shapes of the image side and the object side of the first optical element are more matched, the dynamic aberration of the first optical element is smaller when the first optical element is in the anti-shake motion, the anti-shake capability of the optical lens is stronger, and the image quality is better. When the value of the formula is larger, the parameter design of the optical lens is easier, such as being easy to set a smaller length size of the optical lens, so that the optical lens is more compact, which is beneficial to set the optical lens according to different application scenarios, and thus the optical lens has strong adaptability and anti-shake shooting capability. Therefore, by reasonably setting the sag and the refractive index of the image side and the object side of the first optical element, it is beneficial to make the optical lens as a whole have strong adaptability and anti-shake shooting capability.

[0016] In some embodiments, the optical lens satisfies: F1 / EFL<7.5, or, F1 / EFL<2.5.

[0017] In the embodiment, by setting the focal length of the first optical element, the performance of the first optical element is fully utilized, and the compactness and the anti-shake performance of the optical lens are further improved.

[0018] In some embodiments, the focal length fa of the first lens and the focal length EFL of the optical lens satisfy: 0.5<fa / EFL<1.5, or, 0.6<fa / EFL<1.2, or, 0.5<fa / EFL<3.

[0019] In the embodiment, by reasonably setting the focal length of the first lens, the performance of the first lens is fully utilized, so that the miniaturization design and the strong anti-shake capability of the optical lens are considered.

[0020] In some embodiments, the focal length fb of the second lens and the focal length EFL of the optical lens satisfy: |fb / EFL|<2, or 0.5<|fb / EFL|<1.7, or |fb / EFL|<5.

[0021] In the embodiment, the focal length of the second lens is reasonably set, so that the second lens is better matched with the first lens, the anti-shake compensation capability of the first optical element is improved, and thus the optical lens has strong anti-shake capability.

[0022] In some embodiments, the focal length fa of the first lens and the focal length fb of the second lens satisfy: 0.5<|fa / fb|<1.8, or 0.6<|fa / fb|<0.9.

[0023] In the embodiment, the relationship between the focal length of the first lens and the focal length of the second lens is reasonably set, so that the first optical element has strong anti-shake capability when anti-shaking, and the aberration of the optical lens is small, that is, the optical lens has strong anti-shake shooting capability.

[0024] In some embodiments, the second optical element includes a first first lens group, the first lens group moves along a second direction in the focusing process of the optical lens, and the focal length fm of the first lens group and the focal length of the optical lens satisfy: 0.2<fm / EFL<1.2; or 0.4<fm / EFL<1, or 0.2<|fm / EFL|<1.2.

[0025] In the embodiment, the focal length of the first lens group is reasonably set, so that the shooting performance of the optical lens when shooting an infinite object and shooting a micro object can be well balanced, and the imaging effect of the optical lens is improved.

[0026] In some embodiments, the length dm of the first lens group in the axial direction and the optical length TTL satisfy: dm / ttl<0.4; wherein the optical length TTL is the length from the light entrance surface of the optical lens to the imaging surface after the optical path is unfolded.

[0027] In the embodiment, the thickness of the first lens group in the axial direction is thin, and the length space occupied in the optical lens is small, which is conducive to reducing the length of the optical lens, and thus is conducive to the miniaturization of the optical lens.

[0028] In some embodiments, the maximum focusing stroke d of the first lens group satisfies: d<5.6 millimeters.

[0029] In the embodiment, the maximum focusing stroke of the optical lens is reasonably set, which is conducive to the miniaturization of the optical lens.

[0030] In some embodiments, the optical total length TTL1 of the optical lens and the image height IMH of the optical lens satisfy: TTL1 / IMH<3; or, TTL1 / IMH<2; wherein the optical total length TTL1 is the distance from the end of the optical path folding element away from the imaging surface to the imaging surface.

[0031] In the embodiment, the optical lens is prone to have a smaller optical total length or a larger image height, which is beneficial to the miniaturization design or large imaging surface design of the optical lens, and makes the optical lens have stronger shooting performance.

[0032] In some embodiments, the optical total length TTL1 of the optical lens and the entrance pupil diameter EPD of the optical lens satisfy: TTL1 / EPD<3.5, or, TTL1 / EPD<2.8.

[0033] In the embodiment, by setting the ratio of the optical total length TTL1 of the optical lens to the entrance pupil diameter EPD of the optical lens, the optical lens is prone to have a smaller optical total length or a larger entrance pupil diameter, which is beneficial to the miniaturization design or large light intake design of the optical lens.

[0034] In some embodiments, the optical total length TTL1 of the optical lens and the focal length EFL of the optical lens satisfy: TTL1 / EFL<1.3.

[0035] In the embodiment, the ratio of the optical total length of the optical lens to the focal length is small, and the optical total length of the optical lens is slightly larger than the focal length of the optical lens, so that the optical lens has a smaller length size, and the compactness of the optical lens as a whole is high.

[0036] In some embodiments, the optical total length TTL1 of the optical lens satisfies: 20 millimeters<TTL1<35 millimeters.

[0037] In the embodiment, the length size of the optical lens is small, and when the optical lens is applied to the camera module 30 and the electronic device, the space occupied is small, which is beneficial to the miniaturization design of the camera module 30 and the electronic device.

[0038] In some embodiments, the maximum anti-shake angle of the first optical element is in the range of 0.5°-5°, or the maximum anti-shake angle of the first optical element is greater than 1°.

[0039] In the embodiment, at this time, the anti-shake angle of the first optical element is large, which can compensate for the large amplitude shaking of the optical lens, so that the optical lens has stronger anti-shake capability.

[0040] In some embodiments, the first lens is fixedly connected to the light path folding element by adhesive or structural member, or the first lens is integrally formed with the light path folding element; and the second lens is fixedly connected to the light path folding element by adhesive or structural member, or the second lens is integrally formed with the light path folding element.

[0041] In some embodiments, the focal length fa of the first lens and the focal length fb of the second lens satisfy: -0.4 < (fa+fb) / (fa-fb) < 0.4, or -0.3 < (fa+fb) / (fa-fb) < 0.3.

[0042] In the embodiment, the focal length of the first lens and the focal length of the second lens are matched, the compensation effect of the second lens on the first lens is good, and the first optical element as a whole is easy to balance the strong anti-shake ability and the small aberration, and the anti-shake effect is good.

[0043] In some embodiments, the second optical element includes at least two lens groups, and the lens group closest to the image side in the second optical element includes at least three lenses.

[0044] In the embodiment, the lens group closest to the image side in the second optical element has a large number of lenses, and the lens group is easy to balance the spherical aberration, coma and other aberrations through the cooperation of multiple lenses, so that the optical lens has good imaging quality.

[0045] In a second aspect, the embodiments of the present application provide a camera module, which includes a photosensitive element and an optical lens provided by any one of the embodiments of the first aspect, and the photosensitive element is located on the image side of the optical lens.

[0046] In the embodiment, the camera module has strong anti-shake ability and small size.

[0047] In some embodiments, the camera module further includes an anti-shake motor and a focusing motor, the first optical element of the optical lens is mounted on the anti-shake motor, the second optical element of the optical lens is mounted on the focusing motor, and the photosensitive element of the optical lens is fixedly connected to the focusing motor; the anti-shake motor is used to drive the anti-shake movement of the first optical element, and the focusing motor is used to drive the focusing or zooming of the second optical element.

[0048] In a third aspect, the embodiments of the present application provide an electronic device, which includes an image processor and a camera module provided by any one of the embodiments of the second aspect, and the image processor is in communication connection with the camera module, and the image processor is used to acquire image data from the camera module and process the image data.

[0049] In the embodiment, the electronic device has strong anti-shake ability when shooting, which is conducive to improving the user shooting experience, and the camera module has small size, which is easy to realize the miniaturization or thin design of the electronic device. Attached Figure Description

[0050] To illustrate the technical solutions in the embodiments or background art of this application, the accompanying drawings used in the embodiments or background art of this application will be described below.

[0051] Figure 1 This is a schematic diagram of the structure of the electronic device provided in some embodiments of this application;

[0052] Figure 2 yes Figure 1 A partially exploded structural diagram of the electronic device shown.

[0053] Figure 3 yes Figure 2 The diagram shown is a simplified structural representation of the camera module.

[0054] Figure 4 yes Figure 3 The diagram shown is a simplified structural representation of the camera module at the telephoto end.

[0055] Figure 5 yes Figure 3 The diagram shown is a simplified structural representation of the camera module at the macro end.

[0056] Figure 6 yes Figure 5 The diagram shows a structural schematic of a camera module in some embodiments.

[0057] Figure 7 yes Figure 6 The diagram shows a structural schematic of a camera module in some embodiments.

[0058] Figure 8 yes Figure 5 The diagram shows the structure of the camera module at the telephoto end in Embodiment 1.

[0059] Figure 9 yes Figure 5 The diagram shows the structure of the camera module at the macro end in Embodiment 1;

[0060] Figure 10 yes Figure 8 Axial chromatic aberration diagram of the camera module shown;

[0061] Figure 11 yes Figure 8 The distortion diagram of the camera module shown;

[0062] Figure 12 yes Figure 5 The diagram shown illustrates the structure of the camera module at the telephoto end in Embodiment 2.

[0063] Figure 13 yesFigure 5 Structure diagram of the camera module in embodiment two at the macro end;

[0064] Figure 14 is Figure 12 Axial chromatic aberration diagram of the camera module;

[0065] Figure 15 is Figure 12 Distortion diagram of the camera module;

[0066] Figure 16 is Figure 5 Structure diagram of the camera module in embodiment three at the telephoto end;

[0067] Figure 17 is Figure 5 Structure diagram of the camera module in embodiment three at the macro end;

[0068] Figure 18 is Figure 16 Axial chromatic aberration diagram of the camera module;

[0069] Figure 19 is Figure 16 Distortion diagram of the camera module;

[0070] Figure 20 is Figure 5 Structure diagram of the camera module in embodiment four at the telephoto end;

[0071] Figure 21 is Figure 5 Structure diagram of the camera module in embodiment four at the macro end;

[0072] Figure 22 is Figure 20 Axial chromatic aberration diagram of the camera module;

[0073] Figure 23 is Figure 20 Distortion diagram of the camera module;

[0074] Figure 24 is Figure 5 Structure diagram of the camera module in embodiment five at the telephoto end;

[0075] Figure 25 is Figure 5 Structure diagram of the camera module in embodiment five at the macro end;

[0076] Figure 26 is Figure 24 Axial chromatic aberration diagram of the camera module;

[0077] Figure 27 is a distortion map of the camera module shown in FIG. 1 1 ; Figure 24

[0078] Figure 28 is a structural schematic diagram of the camera module shown in FIG. 1 1 at the macro end in embodiment six; Figure 5

[0079] Figure 29 is a structural schematic diagram of the camera module shown in FIG. 1 1 at the macro end in embodiment six; Figure 5

[0080] Figure 30 is an axial chromatic aberration map of the camera module shown in FIG. 1 1 ; Figure 28

[0081] Figure 31 is a distortion map of the camera module shown in FIG. 1 1 ; Figure 28

[0082] Figure 32 is a structural schematic diagram of the camera module shown in FIG. 1 1 at the macro end in embodiment seven; Figure 5

[0083] Figure 33 is a structural schematic diagram of the camera module shown in FIG. 1 1 at the macro end in embodiment seven; Figure 5

[0084] Figure 34 is an axial chromatic aberration map of the camera module shown in FIG. 1 1 ; Figure 32

[0085] Figure 35 is a distortion map of the camera module shown in FIG. 1 1 ; Figure 32

[0086] Figure 36 is a structural schematic diagram of the camera module shown in FIG. 1 1 at the macro end in embodiment eight; Figure 5

[0087] Figure 37 is a structural schematic diagram of the camera module shown in FIG. 1 1 at the macro end in embodiment eight; Figure 5

[0088] Figure 38 is an axial chromatic aberration map of the camera module shown in FIG. 1 1 ; Figure 36

[0089] Figure 39 is a distortion map of the camera module shown in FIG. 1 1 ; Figure 36

[0090] Figure 40 is a structural schematic diagram of the camera module shown in FIG. 1 1 at the macro end in embodiment nine; Figure 5 ​​​​​​​​​​​​​​

[0091] Figure 41 is Figure 5 a structural schematic diagram of the camera module in embodiment nine at the macro end;

[0092] Figure 42 is Figure 40 an axial chromatic aberration diagram of the camera module;

[0093] Figure 43 is Figure 40 a distortion diagram of the camera module;

[0094] Figure 44 is Figure 5 a structural schematic diagram of the camera module in embodiment ten at the telephoto end;

[0095] Figure 45 is Figure 5 a structural schematic diagram of the camera module in embodiment ten at the macro end;

[0096] Figure 46 is Figure 44 an axial chromatic aberration diagram of the camera module;

[0097] Figure 47 is Figure 44 a distortion diagram of the camera module;

[0098] Figure 48 is Figure 5 a structural schematic diagram of the camera module in embodiment eleven at the telephoto end;

[0099] Figure 49 is Figure 48 a structural schematic diagram of the camera module in some embodiments at the macro end;

[0100] Figure 50 is Figure 48 an axial chromatic aberration diagram of the camera module;

[0101] Figure 51 is Figure 48 a distortion diagram of the camera module;

[0102] Figure 52 is Figure 5 a structural schematic diagram of the camera module in embodiment twelve at the telephoto end;

[0103] Figure 53 is Figure 52 a structural schematic diagram of the camera module in some embodiments at the macro end;

[0104] Figure 54 is Figure 52 an axial chromatic aberration diagram of the camera module;

[0105] Figure 55 is a distortion map of the camera module shown in FIG. 1 1 ; Figure 52

[0106] Figure 56 is a structural schematic diagram of the camera module shown in FIG. 1 1 at the macro end in some embodiments; Figure 5

[0107] Figure 57 is a structural schematic diagram of the camera module shown in FIG. 1 1 at the macro end in some embodiments; Figure 56

[0108] Figure 58 is an axial chromatic aberration map of the camera module shown in FIG. 1 1 ; Figure 56

[0109] Figure 59 is a distortion map of the camera module shown in FIG. 1 1 ; Figure 56

[0110] Figure 60 is a structural schematic diagram of the camera module shown in FIG. 1 1 at the macro end in some embodiments; Figure 5

[0111] Figure 61 is a structural schematic diagram of the camera module shown in FIG. 1 1 at the macro end in some embodiments; Figure 60

[0112] Figure 62 is an axial chromatic aberration map of the camera module shown in FIG. 1 1 ; Figure 60

[0113] Figure 63 is a distortion map of the camera module shown in FIG. 1 1. Figure 60 DETAILED DESCRIPTION

[0114] For the convenience of understanding the optical lens and camera module provided in the embodiments of the present application, the related terms involved in the present application are explained as follows:

[0115] Mirror height, which refers to the vertical distance from a certain point on the mirror to the reference plane of the mirror (usually the vertical plane of the center of the mirror in the axial direction), is used to describe the curvature of the mirror.

[0116] Focal power, which is equal to the difference between the convergence degree of the image-side light beam and the convergence degree of the object-side light beam, represents the ability of the optical system to deflect light rays.

[0117] A lens or lens group with positive focal power has a positive focal length and has the effect of converging light rays.

[0118] ​​​​​​​​​A lens or lens group having a negative focal length has a diverging effect on light rays.

[0119] Focal length, also called focal length, is a measure of the convergence or divergence of light in an optical system, which refers to the vertical distance from the optical center of the lens or lens group to the focal plane when the object at infinity forms a clear image through the lens or lens group. From a practical point of view, it can be understood as the distance from the lens center to the plane when the object is at infinity. For a fixed focus lens, the position of the optical center is fixed; for a long focus lens, the change of the optical center of the lens brings the change of the focal length of the lens.

[0120] Object side, with the lens as the boundary, the side where the object is located is the object side, and the surface of the lens close to the object side is called the object side.

[0121] Image side, with the lens as the boundary, the side where the image of the object is located is the image side, and the surface of the lens close to the image side is called the image side.

[0122] Aperture diaphragm, is a device used to control the amount of light that enters the lens into the body of the light-sensitive surface, which is usually inside the lens, or in front of the lens.

[0123] F-number, also known as F-number, is the relative value (inverse of relative aperture) derived from the focal length of the lens / diameter of the entrance pupil of the lens. The smaller the F-number, the more light enters in the same unit of time. The smaller the F-number, the smaller the depth of field, and the background content of the photograph will be blurred, similar to the effect of a long focal length lens.

[0124] Total track length (TTL), refers to the total length from the surface closest to the object side of the lens to the imaging surface, TTL is the main factor in determining the height of the camera and the space occupied by the camera.

[0125] Imaging surface, located on the image side of all lenses in the long focal length lens, and the light forms an image after passing through each lens in the long focal length lens.

[0126] Optical axis, is an axis that passes vertically through the center of the lens. The optical axis of the lens is the axis that passes through the center of each lens in the lens. When parallel light enters a convex lens, the ideal convex lens should converge all light rays to a point behind the lens, and this point where all light rays converge is called the focal point.

[0127] Focal point, the converging point of parallel light after refraction through a lens or lens group.

[0128] Image side focal plane, also known as back focal plane or second focal plane, is a plane that passes through the image side focal point (also known as back focal point or second focal point) and is perpendicular to the optical axis of the system.

[0129] Abbe, namely the dispersion coefficient, is the difference ratio of the refractive index of optical material at different wavelengths, which represents the degree of material dispersion.

[0130] Field of view (FOV), in optical instruments, the angle between the two edges of the maximum range of the measured object image through the lens of the optical instrument, is called the field of view. The size of the field of view determines the field of view of the optical instrument. The larger the field of view, the larger the field of view, and the smaller the optical magnification.

[0131] Sensor diagonal line ImgH (Image H ight), which represents the effective pixel area diagonal line length on the photosensitive chip, that is, the image height of the imaging surface.

[0132] Aberration, the near-axis region of an optical system has the properties of an ideal optical system. A point on the object emits near-axis light rays that intersect at a point on the image plane (i.e. near-axis image point). However, the light rays passing through different apertures of the lens are difficult to perfectly intersect at a point, and there is a certain deviation from the position of the near-axis image point. These differences are collectively referred to as aberration.

[0133] Axial chromatic aberration (longitudinal spherical aberration), also known as longitudinal chromatic aberration or position chromatic aberration or axial aberration, a bundle of parallel light rays to the optical axis will converge at different positions after passing through the lens. This aberration is called position chromatic aberration or axial aberration. This is because the lens images different wavelengths of light at different positions, so that the image plane of different colors of light cannot coincide when finally imaged, and the dispersion of complex color light is formed.

[0134] Distortion, also known as distortion, is the distortion degree of the image formed by the optical system relative to the object itself. Distortion is caused by the influence of the stop spherical aberration. The intersection height of the chief ray of different fields passing through the optical system and the ideal image height is not equal, and the difference between the two is the distortion. Therefore, distortion only changes the imaging position of the off-axis object point on the ideal surface, causing the shape of the image to be distorted, but does not affect the clarity of the image.

[0135] Astigmatism, because the object point is not on the optical axis of the optical system, the light beam emitted by the object point has an inclination angle with the optical axis. After the light beam is refracted by the lens, the convergence points of the meridional pencil and the sagittal pencil are not on the same point. That is, the light beam cannot be focused on a point, and the image is not clear, so astigmatism is generated. Meridional pencil and sagittal pencil are the names of light beams in two perpendicular planes in a rotationally symmetric optical system.

[0136] Meridian plane, the plane formed by the chief ray (principal ray) of the object point outside the optical axis and the optical axis, is called the meridian plane.

[0137] Sagittal surface, the plane passing through the chief ray (principal ray) of the object point outside the optical axis and perpendicular to the meridian plane, is called the sagittal surface.

[0138] Curvature of field, the curvature of field is used to indicate the difference between the position of the sharpest image point of the central field of view and the position of the sharpest image point of the central field of view after the light passes through the optical lens group in the optical axis direction. When the lens has field curvature, the intersection of the entire light beam does not coincide with the ideal image point, although a sharp image point can be obtained at each specific point, but the entire image plane is a curved surface.

[0139] The embodiments of the present application will be described below with reference to the accompanying drawings of the embodiments of the present application.

[0140] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting", "connecting" should be understood broadly, for example, "connecting" can be detachable connection, or can be non-detachable connection; can be direct connection, or can be indirect connection through intermediate medium; can be electrical connection, or can be mechanical connection. Among them, "fixed connection" refers to the relative position relationship of the connection and the connection. "Movable connection" refers to the relative movement and position relationship of the connection. "Rotary connection" refers to the relative rotation of the connection. "Sliding connection" refers to the relative sliding of the connection. In addition, the two components are integrated by the one-piece molding process, which means that during the formation of one of the two components, the component is connected with the other component, and the two components are connected together without the need for reprocessing (such as bonding, welding, buckling connection, screw connection) method. The relative arrangement of components A and components B can be that component A projects to projection C along the target direction, component B projects to projection D along the target direction, and projection C and projection D can at least partially overlap. In some embodiments, the partial overlap can be any of the following: projection C is completely located in projection D. Or, projection D is completely located in projection C. Or, projection C and projection D intersect each other, and the intersection area of projection C and projection D accounts for more than 50% of projection C or projection D.

[0141] The positional terms mentioned in the embodiments of the present application, such as "top", "bottom", "inner", "outer", "upper", "lower", and the like, are only the directions of the drawings, therefore, the positional terms used are for better and clearer illustration and understanding of the embodiments of the present application, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0142] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a particular order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", and the like are generally of a kind and are not limited in number, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the objects before and after are in an "or" relationship. "Multiple" means at least two.

[0143] In addition, in the embodiments of the present application, the relative positional relationship mentioned, such as parallel, perpendicular, and the like, are all with respect to the current process level, and are not strictly limited, and a small amount of deviation is allowed, such as approximately parallel, approximately perpendicular, and the like. For example, A is parallel to B, which means that A and B are parallel or approximately parallel, and the included angle between A and B can be between 0 degrees and 10 degrees. For example, A is perpendicular to B, which means that A and B are perpendicular or approximately perpendicular, and the included angle between A and B can be between 80 degrees and 100 degrees.

[0144] Please refer to Figure 1 and Figure 2 , Figure 1 is a structural schematic diagram of an electronic device 100 in some embodiments provided by the embodiments of the present application, Figure 2 is Figure 1 a partially exploded structural schematic diagram of the electronic device 100 shown. In the embodiments, the electronic device 100 is taken as a mobile phone for description. It can be understood that Figure 1 and Figure 2 only schematically show some components included in the electronic device 100, and the actual shape, actual size, actual position, and actual structure of the components are not limited by Figure 1 and Figure 2 , and the electronic device 100 can also include more or fewer components than Figure 1 and Figure 2 .

[0145] In some embodiments, the electronic device 100 can include a screen 10, a housing 20, and a camera module 30. The screen 10 is configured to display images, videos, and the like. The screen 10 includes a light-transmitting cover plate 101 and a display screen 102. The light-transmitting cover plate 101 is stacked with the display screen 102 and fixedly connected with the display screen 102. The light-transmitting cover plate 101 is mainly configured to protect and prevent dust from entering the display screen 102. The material of the light-transmitting cover plate 101 includes, but is not limited to, glass. The display screen 102 can be a flexible display screen or a rigid display screen. For example, the display screen 102 can be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode display screen, a micro organic light-emitting diode display screen, a micro organic light-emitting diode display screen, a quantum dot light emitting diode (QLED) display screen, a liquid crystal display (LCD), and the like.

[0146] For example, the housing 20 is configured to protect the internal electronic devices of the electronic device 100. The housing 20 includes a back cover 201, a frame 202, and a camera decoration cover 203. The back cover 201 is located on the side of the display screen 102 away from the light-transmitting cover plate 101 and is stacked with the light-transmitting cover plate 101 and the display screen 102. The frame 202 is fixed to the back cover 201. For example, the frame 202 can be fixedly connected to the back cover 201 by adhesive. Alternatively, the frame 202 can be integrally formed with the back cover 201, i.e., the frame 202 and the back cover 201 form an integral structure. The frame 202 is located between the back cover 201 and the light-transmitting cover plate 101. The light-transmitting cover plate 101 can be fixed to the frame 202 by adhesive. The light-transmitting cover plate 101, the back cover 201, and the frame 202 form an internal accommodating space of the electronic device 100. The internal accommodating space accommodates the display screen 102.

[0147] The camera module 30 is configured to capture photos and / or videos. The camera module 30 can be located in the internal accommodating space of the electronic device 100. The number of the camera module 30 can be one or more, for example, two in the embodiment. The camera module 30 can be used as a rear camera module 30 or a front camera module 30.

[0148] The camera module 30 is configured to capture photos and / or videos. The camera module 30 can be located in the internal accommodating space of the electronic device 100. The number of the camera module 30 can be one or more, for example, two in the embodiment. The camera module 30 can be used as a rear camera module 30 or a front camera module 30.

[0149] The camera module 30 is configured to capture photos and / or videos. The camera module 30 can be located in the internal accommodating space of the electronic device 100. The number of the camera module 30 can be one or more, for example, two in the embodiment. The camera module 30 can be used as a rear camera module 30 or a front camera module 30.

[0150] In the embodiment, the camera module 30 is used as a rear camera module 30 of the electronic device 100. For example, the two camera modules 30 can be a camera module 301 and a camera module 302, the camera module 301 is used as a rear main camera module 30, and the camera module 302 is used as a rear variable focal length telephoto camera module 30. In other embodiments, the electronic device 100 can further include another camera module 30 used as a rear wide-angle camera module 30.

[0151] In other embodiments, the light entrance surface of the camera module 30 faces the light-transmitting cover plate 101. The display screen 102 is provided with a light path avoiding hole. The light path avoiding hole allows the scene light to pass through the light-transmitting cover plate 101 and then enter the light entrance surface of the camera module 30. In this way, the camera module 30 is used as a front camera module 30 of the electronic device 100.

[0152] In some embodiments, as shown in FIG. 6, the camera module 30 is used as a front camera module 30 of the electronic device 100. The camera module 30 is located in the internal accommodating space of the electronic device 100. The camera module 30 is provided with a light-transmitting window 3011. The light-transmitting window 3011 allows the scene light to enter the light entrance surface of the camera module 30. In other words, the light passes through the light-transmitting window 3011 and then enters the camera module 30. Figure 2As shown, the electronic device 100 further includes a circuit board 50 and an image processor 60, which are located in the internal accommodation space of the electronic device 100, the image processor 60 is fixed to the circuit board 50 and electrically connected to the circuit board 50. The image processor 60 is in communication connection with the camera module 30. The image processor 60 is configured to acquire image data from the camera module 30 and process the image data. The communication connection between the camera module 30 and the image processor 60 can include data transmission through electrical connection such as wiring, or can be achieved through coupling or other data transmission methods. It can be understood that the camera module 30 and the image processor 60 can also be in communication connection through other data transmission methods.

[0153] In some embodiments, the electronic device 100 can further include an analog-to-digital converter (also referred to as an A / D converter, not shown in the figure). The analog-to-digital converter is connected between the camera module 30 and the image processor 60. The analog-to-digital converter is configured to convert the signal generated by the camera module 30 into a digital image signal and transmit it to the image processor 60, and then the image processor 60 processes the digital image signal and finally displays the image or video on the screen 10.

[0154] In some embodiments, the electronic device 100 can further include a memory (not shown in the figure), which is in communication connection with the image processor 60. After the image processor 60 processes the image digital signal, the image processor 60 transmits the image to the memory, so that when the image needs to be viewed later, the image can be found in the memory at any time and displayed on the screen 10. In some embodiments, the image processor 60 can also compress the processed image digital signal and store it in the memory to save memory space.

[0155] In other embodiments, the electronic device 100 can also not include the screen 10 and / or the camera decoration cover 203.

[0156] The electronic device 100 can have a width direction (X direction), a length direction (Y direction), and a thickness direction (Z direction), the length direction is perpendicular to the width direction, and the thickness direction is perpendicular to the width direction and the length direction. The display screen 102 and the housing 20 can be arranged relative to the thickness direction of the electronic device 100. At this time, the housing 20 can be perpendicular to the thickness direction of the electronic device 100.

[0157] It can be understood that, Figure 1 and Figure 2The mounting position of the camera module 30 of the electronic device 100 of the illustrated embodiment is merely illustrative, and the application does not strictly limit the mounting position of the camera module 30. In some other embodiments, the camera module 30 can also be mounted at other positions of the electronic device 100, for example, the camera module 30 can be mounted at the upper middle or upper right corner of the back of the electronic device 100. In some other embodiments, the electronic device 100 can include a terminal body and an auxiliary component capable of rotating, moving or detaching relative to the terminal body, and the camera module 30 can also be arranged on the auxiliary component.

[0158] Please refer to Figure 2 and Figure 3 , Figure 3 is Figure 2 the structural schematic diagram of the camera module 30.

[0159] In some embodiments, the camera module 30 can include an optical lens 1 and a photosensitive element 2, and the photosensitive element 2 is located on the image side of the optical lens 1.

[0160] The photosensitive element 2 (also referred to as an image sensor) is a kind of semiconductor chip, and the surface contains hundreds of thousands to millions of photodiodes. When exposed to light, it will generate electric charges.

[0161] The photosensitive element 2 uses the photoelectric conversion function of the photoelectric device to convert the light image on its photosensitive surface into an electric signal in a corresponding proportional relationship with the light image. The photosensitive surface of the photosensitive element 2 is arranged to face the optical lens 1. The photosensitive element 2 can be a charge coupled device (CCD), a complementary metal-oxide semiconductor (CMOS), a phototransistor, or a thin film transistor, etc. The charge coupled device is made of a high-sensitivity semiconductor material and can convert light into electric charges. The charge coupled device is composed of many photosensitive units, usually in units of millions of pixels. When the surface of the charge coupled device is exposed to light, each photosensitive unit will reflect the electric charges on the component. The signals generated by all photosensitive units are added together to form a complete picture. The complementary metal-oxide semiconductor is mainly made of silicon and germanium, two elements of the semiconductor, so that the complementary metal-oxide semiconductor coexists with N (negative) and P (positive) level semiconductors. The current generated by the two complementary effects can be recorded and interpreted into images by the processing chip.

[0162] The optical lens 1 mainly uses the refraction principle of the lens to image, that is, the light of the scene passes through the optical lens 1 to form a clear image on the focal plane, and the image of the scene is recorded by the photosensitive element 2 located on the focal plane. For example, the optical lens 1 can be a long-focus lens, which can better capture scenes at a farther distance.

[0163] The optical lens 1 can be a straight lens or a periscopic lens. In this embodiment, the optical lens 1 is taken as an example of a periscopic lens. When the optical lens 1 is a periscopic lens, it can be better applied to thin electronic devices.

[0164] In some embodiments, the camera module 30 can further include a filter 3. The filter 3 can be located between the optical lens 1 and the photosensitive element 2.

[0165] The filter 3 is used to filter out unnecessary wave bands in the light, prevent the photosensitive element 2 from generating false colors or moire, and improve the effective resolution and color restoration. For example, the filter 3 can be an infrared filter 3. In this embodiment, the filter 3 is a separate component. In other embodiments, the filter 3 structure can be omitted, and the surface of at least one optical element of the long-focus lens can be treated or the material of the at least one optical element can be treated to achieve filtering. The specific embodiments of the structure or structure for achieving filtering are not strictly limited in this application.

[0166] In some embodiments, the camera module 30 can further include a housing 40. The photosensitive element 2 and the optical lens 1 can be installed in the internal space of the housing 40, and a light transmission port 401 can be formed on the housing 40 to transmit light to the optical lens 1.

[0167] In this embodiment, external light can pass through the optical lens 1 to irradiate the photosensitive surface of the photosensitive element 2. For example, the working principle of the camera module 30 is that the light reflected by the photographed scene passes through the optical lens 1 and the filter 3 to generate an optical image on the photosensitive surface of the photosensitive element 2, and the photosensitive element 2 converts the optical image into an electrical signal (i.e., an analog image signal) and transmits it to an analog-to-digital converter to convert it into a digital image signal to the image processor 60 (see Figure 2 ).

[0168] Please refer to Figure 4 and Figure 5 , Figure 4 is Figure 3 the structural schematic diagram of the camera module 30 at the long-focus end, Figure 5 is Figure 3 the structural schematic diagram of the camera module 30 at the macro end. Wherein, Figure 4 and Figure 5The lenses or lens groups are merely illustrated, and are not intended to limit the number of lenses in the lens group, or the optical power, surface shape, etc. of each lens.

[0169] In some embodiments, the camera module 30 can include an optical lens 1, a photosensitive element 2, and a filter 3, and light rays sequentially pass through the optical lens 1, the filter 3, and the photosensitive element 2 to form an image. The optical lens 1 includes a first optical element G1 and a second optical element G2, and the second optical element G2 is located on the image side of the first optical element G1.

[0170] The first optical element G1 includes a front lens group G11, a light path folding element G12, and a rear lens group G13 arranged from the object side to the image side.

[0171] For example, the front lens group G11 can include at least one lens. The optical power of the front lens group G11 can be positive.

[0172] The front lens group G11 can include only one lens, i.e., a first lens L1. In this case, the optical power of the first lens L1 is positive. In this case, the front lens group G11 is simple to set and easy to connect with the light path folding element G12, and in addition, the thickness of the front lens group G11 is small, which is conducive to reducing the shoulder height of the optical lens 1. For example, the optical axis direction of the front lens group G11 can be parallel to the Z direction,

[0173] In other examples, the front lens group G11 can also include multiple lenses, and in this case, the first lens L1 can be the lens closest to the object side in the front lens group G11. For example, the number of lenses in the front lens group G11 can be 2, 3, 4, etc. When the front lens group G11 has multiple lenses, the combination of different materials of the multiple lenses can be used to eliminate or reduce aberrations, and the combination of lenses with positive optical power and lenses with negative optical power can also be used to eliminate or reduce aberrations. The number of lenses in the front lens group G11 is not strictly limited in this embodiment.

[0174] For example, the light path folding element G12 is used to change the propagation direction of the light beam.

[0175] The light path folding element G12 is configured to change the propagation direction of the light beam from a first direction to a second direction. The first direction can be the direction in which the light beam enters the light path folding element G12, and the first direction can be parallel to the thickness direction of the electronic device. The second direction can be the direction in which the light beam exits the light path folding element G12, and the second direction can be perpendicular to the thickness direction of the electronic device. It can be understood that the light path folding element G12 is located on the image side of the front lens group G11, and the first direction can be the direction in which the light beam exits the front lens group G11, and the first direction can be parallel to the optical axis of the front lens group G11. The light path folding element G12 is located on the object side of the second optical element G2, and the light beam can enter the second optical element G2 from the second direction; when the optical axis of the second optical element G2 is not bent, the second direction can be parallel to the optical axis of the second optical element G2.

[0176] For example, the light path folding element G12 can be a prism, a mirror, or the like.

[0177] For example, the rear lens group G13 can include at least one lens. The optical power of the rear lens group G13 can be negative.

[0178] The rear lens group G13 can include only one lens, i.e., the second lens L2. At this time, the optical power of the second lens L2 can be negative. At this time, the rear lens group G13 is relatively simple to set up and is easy to connect with the light path folding element G12. For example, the optical axis direction of the rear lens group G13 can be parallel to the Y direction.

[0179] In other examples, the rear lens group G13 can also include multiple lenses, and at this time the second lens L2 can be the lens closest to the image side in the rear lens group G13. For example, the number of lenses in the rear lens group G13 can be 2, 3, 4, etc. When the rear lens group G13 has multiple lenses, the combination of different materials of the multiple lenses can be used to eliminate or reduce aberrations; or the combination of lenses with positive optical power and lenses with negative optical power can be used to eliminate or reduce aberrations. The present embodiment does not strictly limit the number of lenses in the rear lens group G13.

[0180] For example, in the first optical element G1, the first lens L1 and the second lens L2 are respectively fixedly connected to the light path folding element G12. The first lens L1 and the second lens L2 can move synchronously with the light path folding element G12. When the optical lens 1 moves, the first lens L1, the light path folding element G12, and the second lens L2 can move, thereby making the imaging of the object relatively stable, and thereby improving the shooting effect of the optical lens 1. It can be easily understood that the dynamic aberration compensation is the aberration compensation capability of the first optical element G1 when the first optical element G1 moves.

[0181] For example, in the first optical element G1, the first lens L1 can be fixedly connected with the light path folding element G12 by means of gluing, or the first lens L1 can be fixedly connected with the light path folding element G12 by means of the connection of a fixing member, or the first lens L1 can be an integrally formed element with the light path folding element G12.

[0182] Similarly, the second lens L2 can be fixedly connected with the light path folding element G12 by means of gluing or the connection of a fixing member. Or, the second lens L2 can be an integrally formed element with the light path folding element G12.

[0183] In the process of anti-shake of the optical lens 1, the first optical element G1 rotates around the first direction, and / or rotates around the second direction, and / or rotates around the third direction. The third direction is different from the first direction and the second direction, and the third direction can be perpendicular to the thickness direction of the electronic device. For example, the third direction can be perpendicular to the first direction and the second direction.

[0184] The second optical element G2 includes at least one lens group. The second optical element G2 can include a first lens group G21.

[0185] For example, the optical axis direction of the first lens group G21 can be parallel to the Y direction.

[0186] For example, the first lens group G21 can include at least one lens, for example, the number of lenses of the first lens group G21 can be 1, 2, 3, 4, etc. When the first lens group G21 has multiple lenses, the combination of different materials of the multiple lenses can be used to eliminate or reduce aberration; or the combination of lenses with positive focal power and lenses with negative focal power can be used to eliminate or reduce aberration. The number of lenses of the first lens group G21 is not strictly limited in the embodiment.

[0187] For example, the first lens group G21 can move along the optical axis to realize the focusing of the optical lens 1. The position of the first lens group G21 can be moved to a set position and kept relatively fixed. The first lens group G21 can be driven by a voice coil motor or other driving mechanism, so as to realize the movement. The first lens group G21 can refer to the position of the lens group in the optical lens 1 which can change along the optical axis to perform zooming or focusing.

[0188] In the embodiment, the first lens L1 is located on the object side of the light path folding element G12, and the second lens L2 is located on the image side of the light path folding element G12. The first lens L1 has a positive focal power, which is beneficial to reduce the total optical length of the optical lens 1 and simplify the light path structure on the image side. The second lens L2 has a negative focal power. When the focal power of the first lens L1 is too large, the aberration caused by the anti-shake movement of the first lens L1 is too large, and the second lens L2 is used to reduce the aberration caused by the first lens L1. Moreover, the anti-shake imaging is clearer through the movement of the light path folding element G12.

[0189] In addition, the first lens L1, the light path folding element G12, and the second lens L2 move synchronously for anti-shake, which is beneficial to shorten the total optical length of the camera module 30 and achieve higher anti-shake performance.

[0190] Therefore, the optical lens 1 of the embodiment has higher anti-shake performance and better imaging quality in a smaller size.

[0191] In some embodiments, the second optical element G2 includes at least two lens groups, and the lens group closest to the image side in the second optical element G2 includes at least three lenses.

[0192] For example, when the second optical element G2 includes a first lens group G21, a second lens group G22, and a third lens group G23, the third lens group G23 is the lens group closest to the image side.

[0193] For example, when the second optical element G2 includes a first lens group G21 and a second lens group G22, the second lens group G22 is the lens group closest to the image side.

[0194] At this time, the lens group closest to the image side in the second optical element G2 has more lenses, which is easy to balance the spherical aberration, coma, and other aberrations through the cooperation of multiple lenses, so that the optical lens 1 has better imaging quality.

[0195] In some embodiments, the optical lens 1 can be a fixed focus lens. In other embodiments, the optical lens 1 can also be a zoom lens.

[0196] In some embodiments, the photosensitive element 2 can be perpendicular to the optical axis of the second optical element G2. At this time, the photosensitive element 2 is equivalent to being vertically arranged, and the second optical element G2 and the photosensitive element 2 can not need to be provided with a light path folding element, which is beneficial to provide the second optical element G2 with a larger setting space and movement space, thereby simplifying the setting of the camera module 30.

[0197] In some other embodiments, the light sensing element 2 can form an acute angle with the optical axis of the second optical element G2, or the light sensing element 2 can be parallel to the optical axis of the second optical element G2. It can be understood that the direction of the optical axis can be changed by a light path turning element such as a prism.

[0198] In some embodiments, the second optical element G2 of the optical lens 1 can further include a second lens group G22 and a third lens group G23. The second lens group G22 can be located between the first optical element G1 and the first lens group G21, and the third lens group G23 can be located on the image side of the second lens group G22.

[0199] For example, the optical axis direction of the second lens group G22 can be perpendicular to the Z direction. For example, the optical axis direction of the third lens group G23 can be parallel to the Y direction.

[0200] For example, the second lens group G22 can include at least one lens, for example, the number of lenses of the second lens group G22 can be 1, 2, 3, 4, etc. When the second lens group G22 has multiple lenses, the combination of different materials of the multiple lenses can be used to eliminate or reduce aberration; or the combination of lenses with positive focal power and lenses with negative focal power can be used to eliminate or reduce aberration. The number of lenses of the second lens group G22 is not strictly limited in this embodiment.

[0201] For example, the optical axis direction of the third lens group G23 can be perpendicular to the Z direction. For example, the optical axis direction of the third lens group G23 can be parallel to the Y direction.

[0202] For example, the third lens group G23 can include at least one lens, for example, the number of lenses of the third lens group G23 can be 1, 2, 3, 4, etc. When the third lens group G23 has multiple lenses, the combination of different materials of the multiple lenses can be used to eliminate or reduce aberration; or the combination of lenses with positive focal power and lenses with negative focal power can be used to eliminate or reduce aberration. The number of lenses of the third lens group G23 is not strictly limited in this embodiment.

[0203] For example, the second lens group G22 and the third lens group G23 can be fixed lens groups respectively.

[0204] In this embodiment, by setting the second lens group G22 and the third lens group G23, the optical lens 1 has more lenses or optical elements, which is easy to cooperate with the focal power, refractive index and other parameters of multiple optical elements, so that the imaging quality of the optical lens 1 is better, and the design of the optical lens 1 is simpler.

[0205] For reference Figure 4 and Figure 5In the focusing process of the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 is fixed, and the first lens group G21 moves along the second direction towards the direction close to the first optical element G1. That is, the distance between the first lens group G21 and the first optical element G1 decreases to shoot the object at a closer distance and make the image clear on the imaging surface.

[0206] In some embodiments, the optical lens 1 can further include a first lens. The first lens is located on the image side of the first optical element G1, and the first lens can be the first lens piece outside the first optical element G1 on the image side.

[0207] For example, when the image side of the first optical element G1 is the second optical element G2, the first lens is the first lens piece on the image side of the second optical element G2. For example, when the second optical element G2 includes the second lens group G22, the first lens is the first lens piece on the object side of the second lens group G22.

[0208] For example, the object side surface of the first lens can be convex, that is, the optical power of the object side surface of the first lens is positive, and the image side surface of the first lens is concave, that is, the optical power of the image side surface of the first lens is negative.

[0209] In the embodiment, the light rays emitted by the first optical element G1 pass through the first lens, so that by reasonably setting the shape of the first lens, the light rays of the optical lens 1 can be better converged, the matching degree of the first lens and the lens (i.e., the second lens L2) on the image side thereof is high, and the image quality of the imaging is improved.

[0210] In some embodiments, the optical lens 1 realizes dynamic aberration balance in the anti-shake state by rotating the first optical element G1. The focal length of the first optical element G1 is F1, and the focal length of the optical lens 1 is EFL. The optical lens 1 satisfies: |F1 / EFL|<10.

[0211] For example, the focal length of the first optical element G1 can be the focal length after the light path is unfolded because the first optical element G1 can fold the light path.

[0212] For example, the value of |F1 / EFL| can be 1.468, 1.5, 1.593, 1.727, 1.924, 2.067, 2.082, 2.24, 2.352, 2.5, 3, 3.5, 4, 5.3, 5.9, 6, 7.5, 8.2, 9.3, etc. At this time, by setting the focal length of the first optical element G1, the performance of the first optical element G1 is fully utilized, and the compactness and anti-shake performance of the optical lens 1 are further improved.

[0213] In the embodiment, the first optical element G1 is located at the front end of the optical lens 1, and has a great influence on the anti-shake and focusing of the optical lens 1. By making the total focal length of the first optical element G1 small and the optical power large, the first optical element G1 has strong light converging ability, which is beneficial to reduce the total optical length of the optical lens 1, that is, to improve the compactness of the optical lens 1, and is beneficial to the miniaturization of the optical lens 1. In addition, the first optical element G1 is closer to the object side in the optical lens 1, and the first lens and the second lens of the first optical element G1 have good complementarity, which is beneficial to improve the anti-shake ability of the optical lens 1.

[0214] In some embodiments, the parameters in the optical lens 1 can have a formula one:

[0215] ||sag1*(n1-1)|-|sag2*(n2-1)|) / (|sag1*(n1-1)|+|sag2*(n2-1)||.

[0216] Wherein, sag1 is the sag of the object side surface of the first lens L1 at the first aperture, sag2 is the sag of the image side surface of the second lens L2 at the second aperture, n1 is the refractive index of the first lens L1, and n2 is the refractive index of the second lens L2. The first aperture is equal to the second aperture. Wherein, the first aperture can be the aperture of a certain point on the object side surface of the first lens L1.

[0217] For example, at the r1 aperture of the object side surface of the first lens L1, the corresponding sag is h1, and at the r2 aperture of the image side surface of the second lens L2, the corresponding sag is h2, wherein r1=r2. At this time, the value of sag1 is h1, and the value of sag2 is h2.

[0218] It can be understood that each point on the mirror surface has a sag, and the sags of the points at the same aperture on the mirror surface are the same. The set of sags of the points on the mirror surface can represent the surface type of the mirror surface. The object side surface of the first lens L1 is also the object side surface of the front lens group G11 and the object side surface of the first optical element G1, and the image side surface of the second lens L2 is also the image side surface of the rear lens group G13 and the image side surface of the first optical element G1. It can be understood that the object side surface of the first optical element G1 is also the light entrance surface of the first optical element G1, and the image side surface of the first optical element G1 is also the light exit surface of the first optical element G1.

[0219] It can be understood that when the front lens group G11 has multiple lenses, the refractive indices of the multiple lenses can be the same or different. When the rear lens group G13 has multiple lenses, the refractive indices of the multiple lenses can be the same or different.

[0220] Wherein, the formula one represents the sag difference of the object side of the first lens L1 and the image side of the second lens L2 at the same aperture, and the refractive index of the first lens L1 and the refractive index of the rear lens group G13 are introduced for correction, the smaller the sag difference is, the smaller the aberration of the first optical element G1 is when the first optical element G1 is in the anti-shake, and the stronger the anti-shake performance is.

[0221] Wherein, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.5.

[0222] For example, the first aperture can be the aperture of a part of points on the object side of the front lens group G11, and the second aperture corresponds to the aperture of a part of points on the image side of the rear lens group G13.

[0223] In other examples, the first aperture can be the aperture of any point on the object side of the front lens group G11, or the second aperture corresponds to the aperture of any point on the image side of the rear lens group G13. At this time, all values calculated by the first lens L1 and the second lens L2 according to the formula one are less than 0.5, in other words, the maximum value calculated by the formula one is less than 0.5. At this time, the object side of the first lens L1 and the image side of the second lens L2 are equivalent to better matching, the compensation of the image side of the second lens L2 to the object side of the first lens L1 is stronger, and the dynamic aberration compensation ability of the first optical element G1 is strong.

[0224] In the embodiment, by setting the sag of the image side and the object side of the first optical element G1, and by the correction of the refractive index, the shape of the object side and the image side of the first optical element G1 is close to consistent, the image side and the object side of the first optical element G1 are matched, and the compensation of the second lens L2 to the first lens L1 is better, the aberration of the first optical element G1 is small when the first optical element G1 is in the anti-shake, the definition is high, and it is beneficial to realize the more high-performance anti-shake ability of the optical lens 1.

[0225] For example, (||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||)max<0.3;

[0226] Or, 0.05<(||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||)max<0.5;

[0227] Or, 0.05 < (||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||)max<0.3.

[0228] For example, the value of ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||maxmay take 0.061, 0.066, 0.068, 0.073, 0.096, 0.097, 0.1, 0.104, 0.130, 0.135, 0.15, 0.175, 0.2, 0.25, 0.31, 0.39, -0.41, -0.33, -0.25, -0.222, -0.2, -0.15, -0.122, -0.1, -0.062, -0.083, -0.031, 0.162, 0.245, 0.198, 0.490, etc.

[0229] At this time, the smaller the value of Formula One, the more matched the surface shape of the image side and the object side of the first optical element G1, the smaller the dynamic aberration of the first optical element G1 in the anti-shake movement, the stronger the anti-shake ability of the optical lens 1, and the better the image quality. The larger the value of Formula One, the easier the parameter design of the optical lens 1, such as easy to set a smaller length size of the optical lens 1, so that the optical lens 1 is more compact, which is conducive to setting the optical lens 1 according to different application scenarios, and thus the optical lens 1 has strong adaptability. Therefore, by reasonably setting the sag and the refractive index of the image side and the object side of the first optical element G1, the optical lens 1 as a whole has strong adaptability and anti-shake shooting ability.

[0230] In the embodiments of the present application, the optical lens 1 satisfies ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.5 and |F1 / EFL|<10 at the same time. At this time, the optical power of the image side and the object side of the first optical element G1 is fully utilized, and the first optical element G1 has appropriate optical power, the performance of the first optical element G1 is maximized, and the optical lens 1 has strong anti-shake shooting ability and high compactness.

[0231] In some embodiments, the optical lens 1 satisfies ttl 1 / EFL<1.3. Wherein, ttl 1 is the total optical length of the optical lens 1, which can be the distance from the edge of the first optical element G1 away from the imaging surface to the imaging surface.

[0232] Exemplarily, 1 < ttl 1 / EFL < 1.2. For example, the value of ttl 1 / EFL can be 0.8, 0.9, 1, 1.084, 1.092, 1.094, 1.1, 1.116, 1.139, 1.111, 1.145, 1.192, 1.2, 1.3, and the like.

[0233] In this embodiment, the ratio of the total optical length to the focal length of the optical lens 1 is small, which is beneficial to set a smaller total optical length or a larger focal length of the optical lens 1, so that the optical lens 1 is relatively compact as a whole, and is beneficial to the miniaturization design of the optical lens 1.

[0234] In some embodiments, the optical lens 1 satisfies: 20mm < TTL1 < 35mm. For example, the value of TTL1 can be 20mm, 22mm, 23.700mm, 24.887mm, 23.100mm, 23.500mm, 22.650mm, 22.600mm, 23.000mm, 30.040mm, 33mm, 35mm, and the like. Exemplarily, 23mm < TTL1 < 25mm.

[0235] In this embodiment, the length of the optical lens 1 is small, and when the optical lens 1 is applied to the camera module 30 and the electronic device, the space occupied is small, which is beneficial to the miniaturization design of the camera module 30 and the electronic device.

[0236] In some embodiments, the optical lens 1 can be focused on infinity and close-range imaging, and the optical lens 1 satisfies: L < 300mm, L is the distance of macro shooting imaging of the optical lens 1.

[0237] Exemplarily, the optical lens 1 can achieve focusing by moving the first lens group G21, and shooting in the macro shooting mode.

[0238] Exemplarily, L < 150mm. For example, the value of L can be 100mm, 120mm, 140mm, 150mm, and the like.

[0239] In this embodiment, the optical lens 1 can perform macro shooting at a smaller distance, which is beneficial to shooting objects at a closer distance and improves the shooting capability of the optical lens 1.

[0240] In some embodiments, the maximum focusing stroke d of the first lens group G21 is less than 5.6mm.

[0241] For example, the value of d can be 1.578mm, 2.573mm, 2.596mm, 2.618mm, 2.672mm, 2.678mm, 2.738mm, 5.597mm, and the like. Exemplarily, d < 3mm.

[0242] In the embodiment, by reasonably setting the maximum focusing stroke of the optical lens 1, the miniaturization of the optical lens 1 is facilitated.

[0243] In some embodiments, the maximum focusing stroke d of the first lens group G21 and the focal length EFL of the optical lens 1 satisfy: d / EFL < 0.3.

[0244] For example, the value of d / EFL can be 0.076, 0.124, 0.125, 0.127, 0.129, 0.132, 0.202, 0.21, 0.23, 0.25, 0.27, 0.3, 0.109, 0.113, 0.110, 0.113, etc. For example, d / EFL < 0.21, or d / EFL < 0.15.

[0245] In the embodiment, the maximum focusing stroke of the first lens group G21 in the optical lens 1 is small, and the first lens group G21 occupies a small space, which is conducive to reducing the total optical length of the optical lens 1, and further conducive to reducing the length of the optical lens 1.

[0246] In some embodiments, the focal length fm of the first lens group G21 and the focal length EFL of the optical lens 1 satisfy: 0.2 < fm / EFL < 1.2, or 0.2 < |fm / EFL| < 1.2.

[0247] For example, the value of fm / EFL can be -0.4, -0.522, -0.6, -0.9, 0.733, 0.759, 0.811, etc.

[0248] For example, the value of fm / EFL can be 0.2, 0.3, 0.4, 0.477, 0.5, 0.6, 0.647, 0.688, 0.684, 0.7, 0.735, 0.745, 0.794, 0.8, 0.9, 0.95, 1, 1.1, 1.2, etc. For example, 0.2 < fm / EFL < 0.8, or 0.6 < fm / EFL < 0.8.

[0249] In the embodiment, by reasonably setting the focal length of the first lens group G21, the imaging effect of the optical lens 1 is improved, and the shooting performance of the optical lens 1 when shooting an infinite object and shooting a micro object is well balanced.

[0250] In some embodiments, the focal length fm of the first lens group G21 satisfies: 8mm < fm < 30mm.

[0251] For example, fm can take a value of 8mm, 9mm, 9.956mm, 13.356mm, 14.241mm, 14.168mm, 15.220mm, 15.422mm, 16.428mm, 26.260mm, 27mm, 29mm, 30mm, etc.

[0252] In some embodiments, the thickness dm of the first lens group G21 in the optical axis direction satisfies: dm / ttl < 0.4, where TTL is the length of the optical path of the optical lens 1, i.e., TTL = W1 + W2, where W1 is the distance from the object side surface of the first lens L1 to the optical axis of the second lens L2, and W2 is the distance from the optical axis of the first lens L1 to the imaging surface.

[0253] For example, dm / ttl can take a value of 0.196, 0.205, 0.253, 0.257, etc.

[0254] For example, dm / ttl can take a value of 0.150, 0.151, 0.157, 0.159, 0.161, 0.166, 0.174, 0.192, 0.2, 0.25, 0.3, 0.35, 0.4, etc. For example, dm / ttl < 0.2.

[0255] In the embodiment, the thickness of the first lens group G21 is relatively thin, which occupies a small length space in the optical lens 1, and is conducive to reducing the length of the optical lens 1, and further conducive to the miniaturization of the optical lens 1.

[0256] In some embodiments, the total length TTL1 of the optical lens 1 satisfies: TTL1 / IMH < 2.5.

[0257] For example, TTL1 / IMH < 2.

[0258] For example, TTL1 / IMH can take a value of 2.286, 2.293, 2.384, etc.

[0259] For example, TTL1 / IMH can take a value of 1.738, 1.742, 1.769, 1.777, 1.807, 1.823, 1.914, 2.31, 2.4, 2.5, etc.

[0260] In the embodiment, the optical lens 1 is easy to have a smaller total length or a larger image height, which is conducive to the miniaturization design or large imaging surface design of the optical lens 1, and makes the optical lens 1 have stronger shooting performance.

[0261] In some embodiments, the optical total length TTL1 of the optical lens 1 and the entrance pupil diameter EPD of the optical lens 1 satisfy: TTL1 / EPD<3.5.

[0262] For example, the value of TTL1 / EPD can be 2.585, 2.695, etc.

[0263] For example, the value of TTL1 / EPD can be 2.5, 2.563, 2.584, 2.618, 2.692, 2.693, 2.7, 2.714, 2.730, 2.767, 2.9, 3, 3.3, 3.5, etc. For example, TTL1 / EPD<2.8.

[0264] In this embodiment, by setting the ratio of the optical total length TTL1 of the optical lens 1 to the entrance pupil diameter EPD of the optical lens 1, the optical lens 1 is easy to have a smaller optical total length or a larger entrance pupil diameter, which is beneficial to the miniaturization design or large light amount design of the optical lens 1.

[0265] In some embodiments, the optical total length TTL1 of the optical lens 1 and the focal length EFL of the optical lens 1 satisfy: TTL1 / EFL<1.3.

[0266] For example, the value of TTL1 / EFL can be 1.08, 1.09, 1.11, 1.12, 1.13, 1.14, 1.19, 1.173, 1.224, etc. For example, TTL1 / EFL<1.15.

[0267] In this embodiment, the ratio of the optical total length of the optical lens 1 to the focal length is small, and the optical total length of the optical lens 1 is slightly larger than the focal length of the optical lens 1, so that the optical lens 1 has a smaller length size, and the compactness of the optical lens 1 as a whole is high.

[0268] In some embodiments, the common rotation of the first optical element G1 can achieve a maximum 0.5°-5° anti-shake effect. That is, the common rotation of the front lens group G11 and the rear lens group G13 and the light path folding element G12 can achieve a maximum 0.5°-5° anti-shake effect. For example, the maximum anti-shake angle of the first optical element is greater than 1°.

[0269] At this time, the anti-shake angle of the first optical element G1 is large, which can compensate for the large amplitude shaking of the optical lens 1, so that the optical lens 1 has stronger anti-shake ability.

[0270] In some embodiments, when the first optical element G1 performs dynamic aberration balance anti-shake, it can rotate around the X direction (i.e. nodding motion), and the shaking direction anti-shake rotates around the Y axis or Z axis direction (i.e. shaking motion). The position of the first optical element G1 around the point can be set according to the design of the motor scheme, which is not limited in this embodiment.

[0271] In some embodiments, the focal length fa of the first lens L1 and the focal length EFL of the optical lens 1 satisfy: 0.5 < fa / EFL < 1.5, or 0.5 < fa / EFL < 3.

[0272] For example, 0.6 < fa / EFL < 1.2.

[0273] For example, the value of fa / EFL can be 0.6, 0.7, 0.788, 0.841, 0.842, 0.845, 0.863, 0.870, 1, 1.105, 1.2, 1.3, 1.4, 1.5, 1.647, 1.665, 1.805, 2.272, etc.

[0274] In this embodiment, the focal length of the first lens L1 is reasonably set to fully utilize the performance of the first lens L1, so as to balance the miniaturization design and the strong anti-shake ability of the optical lens 1.

[0275] In some embodiments, the optical lens 1 satisfies: 15mm < |fa| < 28mm.

[0276] For example, the value of |fa| can be 15mm, 16.312mm, 17.416mm, 17.426mm, 17.482mm, 17.415mm, 17.815mm, 23.069mm, 24.097mm, 25mm, etc.

[0277] In some examples, 17 < |fa| < 18.

[0278] In some embodiments, the focal length fb of the second lens L2 and the focal length EFL of the optical lens 1 satisfy: |fb / EFL| < 2, or |fb / EFL| < 5.

[0279] For example, 0.5 < |fb / EFL| < 1.7.

[0280] For example, the value of |fb / EFL| can be 0.56, 0.8, 1, 1.0162, 1.033, 1.058, 1.057, 1.097, 1.181, 1.342, 1.5, 1.574, 1.6, 1.7, -1.45, -1.81, -1.77, -4.37, etc.

[0281] In this embodiment, the focal length of the second lens L2 is reasonably set to make the second lens L2 better match the first lens L1, improve the anti-shake compensation ability of the first optical element G1, so that the optical lens 1 has strong anti-shake ability.

[0282] In some embodiments, the optical lens 1 satisfies: 15mm<|fb|<45mm. For example, |fb| can take a value of 15.43mm, 20mm, 21mm, 21.035mm, 21.392mm, 21.888mm, 22.688mm, 24.367mm, 27.771mm, 29.299mm, 30mm, 32.861mm, 33mm, 35mm, 43.57mm, etc. In some examples, 21mm<|fb|<25mm.

[0283] In some embodiments, the focal length fa of the first lens L1 and the focal length fb of the second lens satisfy: 0.5<|fa / fb|<1.8.

[0284] For example, fa / fb can take a value of -0.771, -0.702, -0.814, -0.731, -0.745, -0.627, -0.753, -0.828, -0.822, -1.772, -0.595, -1.13, -0.92, -1.02, -0.52, etc. It can be understood that the value of the focal length fa of the first lens L1 is positive, and the value of the focal length fb of the second lens L2 is negative.

[0285] In some examples, 0.6<|fa / fb|<0.9.

[0286] In the present embodiment, by reasonably setting the relationship between the focal length of the first lens L1 and the focal length of the second lens L2, the first optical element G1 has strong anti-shake ability when anti-shaking, and the aberration of the optical lens 1 is small, i.e., the optical lens 1 has strong anti-shake shooting capability.

[0287] In some embodiments, the focal length fa of the first lens L1 and the focal length fb of the second lens satisfy: -0.4<(fa+fb) / (fa-fb)<0.4.

[0288] For example, (fa+fb) / (fa-fb) can take a value of -0.13, -0.18, -0.10, -0.16, -0.15, -0.23, -0.09, -0.10, 0.28, -0.25, 0.06, -0.04, 0.01, -0.32, etc.

[0289] For example, the focal length fa of the first lens L1 and the focal length fb of the second lens satisfy: -0.3<(fa+fb) / (fa-fb)<0.3.

[0290] For example, the focal length fa of the first lens L1 and the focal length fb of the second lens satisfy: -0.3<(fa+fb) / (fa-fb)<0.3.

[0291] In the embodiment, the second lens L2 has a good compensation effect on the first lens L1 through the cooperation of the focal lengths of the first lens L1 and the second lens L2, and the first optical element G1 as a whole has a good anti-shake effect and small aberration.

[0292] In some embodiments, the focal length F1 of the first optical element G1 satisfies 30mm < F1 < 65mm or F1 < -150mm.

[0293] For example, the value of F1 can be 30mm, 30.383mm, 32.985mm, 35.633mm, 39.826mm, 40mm, 42.792mm, 43.103mm, 49.115mm, 62.100mm, -200mm, etc.

[0294] For example, the value of F1 can be 30mm, 30.383mm, 32.985mm, 35.633mm, 39.826mm, 40mm, 42.792mm, 43.103mm, 49.115mm, 62.100mm, -200mm, etc.

[0295] In the embodiment, the focal length of the first optical element G1 is set reasonably, so that the first optical element G1 greatly contributes to reducing the length of the optical lens 1, and the miniaturization design and strong anti-shake shooting capability of the optical lens 1 are considered.

[0296] Please refer to Figure 6 and Figure 7 , Figure 6 is Figure 5 the structure schematic diagram of the camera module 30 in some embodiments, Figure 7 is Figure 6 the structure schematic diagram of the camera module 30 in some embodiments.

[0297] In some embodiments, the camera module 30 further comprises an anti-shake motor 4 and a focusing motor 5.

[0298] The first optical element G1 can be installed on the anti-shake motor 4.

[0299] The second optical element G2 can be installed on the focusing motor 5. The focusing motor 5 is used to drive the second optical element G2 to focus or zoom. For example, when the first lens group G21 is a movable lens group, the first lens group G21 can be driven by the focusing motor 5 and move linearly. When the second lens group G22 and the third lens group G23 are fixed lens groups, the second lens group G22 and the third lens group G23 are fixedly installed on the focusing motor 5 and fixed relative to the photosensitive element 2.

[0300] In some embodiments, the filter 3, the photosensitive element 2 and the circuit assembly 6 of the camera module 30 can be fixedly connected to the focusing motor 5.

[0301] In some embodiments, the camera module 30 can achieve one light path reflection through the first optical element G1, and the light axis direction of the photosensitive element 2 is arranged perpendicularly to the second optical element G2. In other embodiments, the light path can be reflected twice by adding a rear prism, and the light axis direction of the photosensitive element 2 is arranged perpendicularly to the first lens group G21. Alternatively, the light path can be reflected multiple times by adding a rear Schmidt prism, and the photosensitive element 2 is arranged at an angle of 0-90° (or 90°-180°) with the light axis of the second optical element G2.

[0302] In some embodiments, the driving mode of the focusing motor 5 can be a voice coil motor or a piezoelectric motor, wherein the voice coil motor can be a moving magnet type or a moving coil type, the driving arrangement can be single-sided driving or double-sided driving, and the guide mechanism of the focusing motor 5 can be a ball or a sliding shaft.

[0303] In some embodiments, the first optical element G1 can be mounted on the anti-shake motor 4, and the second optical element G2 and the focusing motor 5 are assembled, and the two components and the photosensitive element 2 can be aligned and bonded by glue.

[0304] Embodiment one:

[0305] Please refer to Figure 8 and Figure 9 , Figure 8 is Figure 5 the structure diagram of the camera module 30 at the long focal end in embodiment one, Figure 9 is Figure 5 the structure diagram of the camera module 30 at the macro end in embodiment one.

[0306] In some embodiments, the camera module 30 can include an optical lens 1, a photosensitive element 2, and a filter 3, and light passes through the optical lens 1, the filter 3, and the photosensitive element 2 in sequence to form an image. Among them, the optical lens 1 includes a first optical element G1 and a second optical element G2, and the second optical element G2 is located on the image side of the first optical element G1.

[0307] Among them, the first optical element G1 includes a front lens group G11, a light path folding element G12, and a rear lens group G13.

[0308] For example, the front lens group G11 can include one lens, i.e. the first lens L1. The light path folding element G12 can be a prism, and the light path folding element G12 is used to change the light axis from the first direction to the second direction. The rear lens group G13 can include one lens, i.e. the second lens L2.

[0309] Exemplarily, the first lens L1, the light path folding element G12 and the second lens L2 are different in refractive index, and thus the first lens L1 and the second lens L2 can be fixedly connected to the light path folding element G12 by means of adhesion, or the first lens L1, the light path folding element G12 and the second lens L2 can be formed into an integral component by means of fixed connection.

[0310] Exemplarily, the first lens L1 has positive refractive power, and the second lens L2 has negative refractive power. The object side surface of the first lens L1 is a convex surface, and the image side surface of the second lens L2 is a concave surface.

[0311] The second optical element G2 includes a first lens group G21, a second lens group G22 and a third lens group G23. The second lens group G22, the first lens group G21 and the third lens group G23 are arranged in sequence from the object side to the image side.

[0312] Exemplarily, the second lens group G22 includes one lens, i.e., the third lens L3. The second lens group G22 is a fixed lens group.

[0313] Exemplarily, the first lens group G21 includes three lenses, i.e., the fourth lens L4, the fifth lens L5 and the sixth lens L6 arranged in sequence from the object side to the image side. The first lens group G21 is a movable lens group, and the first lens group G21 can move along the optical axis thereof.

[0314] Exemplarily, the third lens group G23 includes two lenses, i.e., the seventh lens L7 and the eighth lens L8 arranged in sequence from the object side to the image side. The third lens group G23 is a fixed lens group.

[0315] In the embodiment, the first lens L1, the light path folding element G12 and the second lens L2 are relatively fixed, and the three can jointly rotate to realize the anti-shake of the optical lens 1, and thus the cooperation of the first lens L1, the light path folding element G12 and the second lens L2 enables the optical lens 1 to have strong anti-shake capability, good image quality and small size. Moreover, the first lens group G21 realizes the focusing of the optical lens 1 by moving.

[0316] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the second lens group G22, and there is no need to additionally provide an element for folding the light path of the photosensitive element 2, which is conducive to providing more setting space for other optical elements, and thus is conducive to improving the compactness of the camera module 30 and facilitating the miniaturization of the camera module 30.

[0317] In some embodiments, during the process of changing the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 is fixed, the first lens group G21 moves along the second direction towards the direction close to the first optical element G1, and the positions of the second lens group G22 and the third lens group G23 are fixed. That is, the distance between the first lens group G21 and the first optical element G1 is reduced, so that the object is imaged on the imaging surface, and the optical lens 1 can image the object at a closer distance.

[0318] Table 1a is shown below. Figure 8 and Figure 9 The surface type, the radius of curvature Y, the thickness, the refractive index, the Abbe number, the refractive mode, and the thickness in the macro state of each lens, light folding element (such as light path folding element G12), and optical filter 3 of the camera module 30 shown in Table 1a, Table 1b, and Table 1c. Among them, the thickness includes the thickness of the structure itself and the spacing between the structures, and 1E+18 (scientific notation) means infinity. Table 1b, Table 1c is Figure 8 and Figure 9 The aspheric coefficients of each lens of the optical lens 1 of the camera module 30 shown in Table 1a, Table 1b, and Table 1c in one possible embodiment.

[0319] Among them, the odd polynomial surface is one of the aspheric surfaces. Among them, the blank in the “refraction mode” column can be “refraction” respectively. The data of the lens behind the prism is measured by folding the light path.

[0320] Table 1a

[0321]

[0322]

[0323] Table 1b

[0324]

[0325]

[0326] Table 1c

[0327]

[0328]

[0329] The aspheric surfaces in the optical lens 1 in Table 1a, Table 1b, and Table 1c can be defined by, but not limited to, the following aspheric curve equation:

[0330]

[0331] Wherein, z is the relative distance of the point on the aspherical surface with a distance of r from the optical axis to the tangent plane at the intersection point on the optical axis of the aspherical surface; r is the vertical distance of the point on the aspherical curve from the optical axis; c is the curvature; k is the conic coefficient; ai is the i-th order aspherical coefficient, which can be referred to Table 1b. Wherein, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7 and the eighth lens L8 are aspherical surfaces.

[0332] Please refer to Table 1d and Table 1e, Table 1d is Figure 8 and Figure 9 the basic parameters of the camera module 30 shown in Table 1d, and Table 1e is the relationship between the parameters in Table 1d.

[0333] In Table 1d, IMH is the image height of the optical lens 1, EPD is the entrance pupil diameter of the optical lens 1, EFL is the focal length of the optical lens 1, F1 is the focal length of the first optical element G1, fl is the focal length of the second lens group G22, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 in the optical axis direction, ttl is the optical length, ttl 1 is the total optical length, d is the maximum focusing stroke of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. Wherein, the values of EFL, F1, fl, fn and fm are effective values, and the unit is millimeter.

[0334] Table 1d

[0335] IMH (mm) 13.00 dm (mm) 4.81 EPD (mm) 8.56 ttl (mm) 25.08 EFL (mm) 20.70 ttl1 (mm) 23.70 F1 (mm) 39.83 d (mm) 2.57 fl (mm) 34.03 L (mm) 120.00 fn (mm) -10.92 fa (mm) 17.48 fm (mm) 16.43 fb (mm) -22.69

[0336] Table 1e

[0337]

[0338] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.13. And the ratio F1 / EFL of the focal length F1 of the first optical element G1 to the focal length EFL of the optical lens 1 is 1.92. At this time, the optical power of the image side surface and the object side surface of the first optical element G1 is fully utilized, and the first optical element G1 has appropriate optical power, the ratio F1 / EFL is small, which improves the compactness of the optical lens 1, is beneficial to the miniaturization of the optical lens 1, maximizes the performance of the first optical element G1, and makes the optical lens 1 have stronger anti-shake shooting capability and higher compactness.

[0339] In some embodiments, a ratio of a focal length fm of the first lens group G21 to an effective focal length EFL of the optical lens 1 is fm / EFL=0.79. At this time, the focal length fm of the first lens group G21 is appropriate, and the imaging effect of the optical lens 1 at the long-focus end and the macro end is good.

[0340] In some embodiments, a ratio of an axial thickness dm of the first lens group G21 to a total track length TTL of the optical lens 1 is dm / TTL=0.19. At this time, the thickness of the first lens group G21 is thin, which is beneficial to the miniaturization of the optical lens 1.

[0341] In some embodiments, a ratio of the total track length TTL1 to an image height IMH of the optical lens 1 is TTL1 / IMH=1.82. At this time, the optical lens 1 has a larger image height and a smaller length size.

[0342] In some embodiments, a ratio of the total track length TTL1 to an entrance pupil diameter EPD of the optical lens 1 is TTL1 / EPD=2.77. At this time, the optical lens 1 has a smaller length size and a larger light amount.

[0343] In some embodiments, a ratio of the total track length TTL1 to the effective focal length EFL of the optical lens 1 is TTL1 / EFL=1.14. At this time, the optical lens 1 makes full use of the length space and has high compactness.

[0344] In some embodiments, a ratio of a maximum focusing stroke d of the first lens group G21 to the effective focal length EFL of the optical lens 1 is d / EFL=0.12.

[0345] In some embodiments, a ratio of a focal length fa of the first lens L1 to the effective focal length EFL of the optical lens 1 is fa / EFL=0.84. At this time, the optical lens 1 has a stronger anti-shake capability and a smaller size.

[0346] In some embodiments, a ratio of a focal length fb of the second lens L2 to the effective focal length EFL of the optical lens 1 is fb / EFL=-1.10. At this time, the optical lens 1 has a stronger anti-shake shooting capability.

[0347] In some embodiments, a ratio of the focal length fa of the first lens L1 to the focal length fb of the second lens is fa / fb=-0.771. At this time, the first optical element G1 has a stronger anti-shake capability when anti-shaking, and the optical lens 1 has smaller aberration, that is, the optical lens 1 has a stronger anti-shake shooting capability.

[0348] Please refer to Figure 10 and Figure 11 , Figure 10 are Figure 8 axial chromatic aberration diagrams of the camera module 30 shown in FIGS. Figure 11 areFigure 8 The distortion diagram of the camera module 30 shown.

[0349] Figure 10 The axial chromatic aberration curve shown includes the spherical aberration curves corresponding to different wave bands of the system (the diagram shown includes 650 nm, 610 nm, 555 nm, 510 nm, 470 nm, and 435 nm); the physical meaning is that the light of the corresponding wavelength emitted at 0 degrees of the field of view deviates from the ideal image point after passing through the optical system; the abscissa is the deviation value in the direction of the optical axis, and the ordinate is the normalized coordinate at the pupil. Figure 10 The values shown in the middle are small, and the on-axis aberration (spherical aberration, chromatic aberration, etc.) of the optical lens 1 is well corrected.

[0350] Figure 11 The distortion diagram is used to characterize the relative deviation of the beam convergence point (actual image height) of different fields of view from the ideal image height. Figure 11 In the distortion diagram shown, the relative deviation is within 1%, which can ensure that the picture is not significantly distorted.

[0351] Embodiment Two:

[0352] Please refer to Figure 12 and Figure 13 , Figure 12 is Figure 5 The structural schematic diagram of the camera module 30 in embodiment two at the telephoto end, Figure 13 is Figure 5 The structural schematic diagram of the camera module 30 in embodiment two at the macro end.

[0353] In some embodiments, the camera module 30 can include an optical lens 1, a photosensitive element 2, and a filter 3, and light passes through the optical lens 1, the filter 3, and the photosensitive element 2 in sequence to form an image. Among them, the optical lens 1 includes a first optical element G1 and a second optical element G2, and the second optical element G2 is located on the image side of the first optical element G1.

[0354] Among them, the first optical element G1 includes a front lens group G11, an optical path turning element G12, and a rear lens group G13.

[0355] For example, the front lens group G11 can include one lens, i.e., a first lens L1. The optical path turning element G12 can be a prism, and the optical path turning element G12 is used to change the optical axis from a first direction to a second direction. The rear lens group G13 can include one lens, i.e., a second lens L2.

[0356] For example, the first lens L1, the light path folding element G12 and the second lens L2 have the same refractive index, and thus the first lens L1 and the second lens L2 can be fixedly connected to the light path folding element G12 by means of adhesion, or the first lens L1, the light path folding element G12 and the second lens L2 can be formed as an integral component by means of one-piece molding.

[0357] For example, the first lens L1 has positive refractive power, and the second lens L2 has negative refractive power. The object side surface of the first lens L1 is a convex surface, and the image side surface of the second lens L2 is a concave surface.

[0358] The second optical element G2 includes a first lens group G21, a second lens group G22 and a third lens group G23. The second lens group G22, the first lens group G21 and the third lens group G23 are arranged in sequence from the object side to the image side.

[0359] For example, the second lens group G22 includes one lens, i.e., the third lens L3. The second lens group G22 is a fixed lens group.

[0360] For example, the first lens group G21 includes three lenses, i.e., the fourth lens L4, the fifth lens L5 and the sixth lens L6 arranged in sequence from the object side to the image side. The first lens group G21 is a movable lens group, and the first lens group G21 can move along the optical axis thereof.

[0361] For example, the third lens group G23 includes three lenses, i.e., the seventh lens L7, the eighth lens L8 and the ninth lens L9 arranged in sequence from the object side to the image side. The third lens group G23 is a fixed lens group.

[0362] In this embodiment, the first lens L1, the light path folding element G12 and the second lens L2 are relatively fixed, and the three can jointly rotate to realize the anti-shake of the optical lens 1, and thus the cooperation of the first lens L1, the light path folding element G12 and the second lens L2 enables the optical lens 1 to have strong anti-shake capability, good image quality and small size. Moreover, the first lens group G21 realizes the focusing of the optical lens 1 by moving.

[0363] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the second lens group G22, and there is no need to additionally provide an element for folding the light path of the photosensitive element 2, which is conducive to providing more setting space for other optical elements, and thus is conducive to improving the compactness of the camera module 30 and facilitating the miniaturization of the camera module 30.

[0364] In some embodiments, during the process of changing the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 is fixed, the first lens group G21 moves along the second direction towards the direction close to the first optical element G1, and the positions of the second lens group G22 and the third lens group G23 are fixed. That is, the distance between the first lens group G21 and the first optical element G1 is reduced, so that the object is imaged on the imaging surface, and the optical lens 1 can image the object at a closer distance.

[0365] Table 2a is shown below. Figure 12 and Figure 13 The surface type, the radius of curvature Y, the thickness, the refractive index, the Abbe number, the refractive mode, and the thickness in the macro state of each lens, light folding element and filter 3 of the camera module 30 are shown in Table 2a. Figure 12 and Figure 13 The aspherical coefficients of each lens of the optical lens 1 of the camera module 30 in one possible embodiment are shown in Table 2b.

[0366] Wherein, the odd polynomial surface is a kind of aspherical surface. Wherein, the blank in the "refraction mode" column can be "refraction" respectively. The data of the lens behind the prism is measured by the light path conversion.

[0367] Table 2a

[0368]

[0369] Table 2b

[0370] Surface Number Y Radius k 2nd Order Coefficient 4th Order Coefficient 6th Order Coefficient 8th Order Coefficient 10th Order Coefficient 12th Order Coefficient 1 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 2 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 3 1.15E+01 0.00E+00 0.00E+00 -3.35E-05 2.04E-06 -6.50E-07 1.89E-07 -3.75E-08 4 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 5 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 6 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 7 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 8 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 9 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 10 -1.64E+01 0.00E+00 0.00E+00 -2.20E-04 9.27E-05 -1.55E-04 1.37E-04 -7.40E-05 11 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 12 -5.89E+00 3.57E-01 0.00E+00 -5.90E-04 2.78E-04 -2.65E-04 2.25E-04 -1.18E-04 13 -5.15E+00 1.21E-01 0.00E+00 -7.26E-04 5.04E-04 -4.77E-04 3.70E-04 -1.86E-04 14 -5.25E+00 0.00E+00 0.00E+00 -8.91E-04 1.73E-04 -1.84E-04 1.32E-04 -6.30E-05 15 -1.56E+03 0.00E+00 0.00E+00 -1.63E-03 -3.51E-04 -4.42E-04 6.05E-04 -3.11E-04 16 -5.19E+00 0.00E+00 0.00E+00 1.63E-02 -1.46E-03 -1.12E-03 1.01E-03 -4.21E-04 17 -3.34E+00 -4.72E-03 0.00E+00 2.01E-02 -1.10E-03 -9.36E-04 6.07E-04 -1.70E-04 18 -1.68E+01 0.00E+00 0.00E+00 -1.09E-03 3.29E-04 3.69E-04 -5.50E-04 3.92E-04 19 1.85E+01 0.00E+00 0.00E+00 -8.47E-04 3.75E-04 -1.35E-04 -6.19E-05 1.17E-04 20 3.80E+00 0.00E+00 0.00E+00 -4.67E-02 9.48E-03 -2.55E-03 1.17E-03 -5.80E-04 21 6.63E+00 0.00E+00 0.00E+00 -4.28E-02 7.20E-03 -1.66E-03 9.25E-04 -5.23E-04 22 1.86E+01 0.00E+00 0.00E+00 -2.38E-03 6.58E-04 1.01E-04 -1.32E-04 5.78E-05 23 7.36E+00 6.66E-01 0.00E+00 1.13E-02 -8.15E-03 2.74E-03 -5.69E-04 8.65E-05 24 3.99E+01 0.00E+00 0.00E+00 4.91E-02 -2.25E-02 6.39E-03 -1.14E-03 1.28E-04 25 -7.84E+00 -5.04E-01 0.00E+00 3.44E-02 -1.25E-02 3.45E-03 -6.81E-04 9.72E-05 26 -1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 27 -1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 28 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 29 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 30 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

[0371] Table 2c

[0372]

[0373]

[0374]

[0375] The aspherical surface in the optical lens 1 in Table 2a, Table 2b and Table 2c can be defined by, but not limited to, the following aspherical curve equation:

[0376]

[0377] Wherein, z is the relative distance of the point on the aspherical surface with a distance r from the optical axis to the tangent plane at the intersection point on the optical axis of the aspherical surface; r is the vertical distance of the point on the aspherical curve from the optical axis; c is the curvature; k is the conic coefficient; ai is the i-th order aspherical coefficient, which can be referred to Table 2b. Wherein, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, the eighth lens L8, the ninth lens L9.

[0378] Please refer to Table 2d and Table 2e, Table 2d is Figure 12 and Figure 13 the basic parameters of the camera module 30 shown in Table 2d, and Table 2e is the relationship between the parameters in Table 2d.

[0379] In Table 2d, IMH is the image height of the optical lens 1, EPD is the entrance pupil diameter of the optical lens 1, EFL is the focal length of the optical lens 1, F1 is the focal length of the first optical element G1, fl is the focal length of the second lens group G22, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 in the direction of the optical axis, ttl is the optical length, ttl1 is the total optical length, d is the maximum focusing stroke of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. Wherein, the values of EFL, F1, fl, fn and fm are effective values, and the unit is millimeter.

[0380] Table 2d

[0381]

[0382]

[0383] Table 2e

[0384]

[0385] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.18. And the ratio F1 / EFL of the focal length F1 of the first optical element G1 to the focal length EFL of the optical lens 1 is 2.35. At this time, the optical power of the image side surface and the object side surface of the first optical element G1 is fully utilized, and the first optical element G1 has appropriate optical power, the ratio F1 / EFL is small, which improves the compactness of the optical lens 1, is beneficial to the miniaturization of the optical lens 1, maximizes the performance of the first optical element G1, and makes the optical lens 1 have stronger anti-shake shooting capability and higher compactness.

[0386] In some embodiments, the ratio of the focal length fm of the first lens group G21 to the focal length EFL of the optical lens 1 is fm / EFL=0.48. At this time, the focal length fm of the first lens group G21 is appropriate, and the imaging effect of the optical lens 1 at the long-focus end and the macro end is good.

[0387] In some embodiments, the ratio of the thickness dm of the first lens group G21 in the axial direction to the optical length TTL of the optical lens 1 is dm / TTL=0.15. At this time, the thickness of the first lens group G21 is thin, which is beneficial to the miniaturization of the optical lens 1.

[0388] In some embodiments, the ratio of the total optical length TTL1 to the image height IMH of the optical lens 1 is TTL1 / IMH=1.91. At this time, the optical lens 1 has a larger image height and a smaller length size.

[0389] In some embodiments, the ratio of the total optical length TTL1 to the entrance pupil diameter EPD of the optical lens 1 is TTL1 / EPD=2.56. At this time, the optical lens 1 has a smaller length size and a larger light amount.

[0390] In some embodiments, the ratio of the total optical length TTL1 of the optical lens 1 to the focal length EFL of the optical lens 1 is TTL1 / EFL=1.19. At this time, the optical lens 1 makes full use of the length space and has high compactness.

[0391] In some embodiments, the ratio of the maximum focusing stroke d of the first lens group G21 to the focal length EFL of the optical lens 1 is d / EFL=0.08.

[0392] In some embodiments, the ratio of the focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 is fa / EFL=1.1. At this time, the optical lens 1 has a stronger anti-shake capability and a smaller size.

[0393] In some embodiments, the ratio of the focal length fb of the second lens L2 to the focal length EFL of the optical lens 1 is fb / EFL=-1.57. At this time, the optical lens 1 has a stronger anti-shake shooting capability.

[0394] In some embodiments, the ratio of the focal length fa of the first lens L1 to the focal length fb of the second lens is fa / fb=-0.702. At this time, the first optical element G1 has a stronger anti-shake capability when anti-shaking, and the optical lens 1 has smaller aberration, that is, the optical lens 1 has a stronger anti-shake shooting capability.

[0395] Please refer to Figure 14 and Figure 15 , Figure 14 are Figure 12 the axial chromatic aberration diagram of the camera module 30 shown in FIG.Figure 15 is Figure 12 the distortion map of the camera module 30 shown in FIG. 1.

[0396] Figure 14 The axial chromatic aberration curve shown in FIG. 2 includes the spherical aberration curves corresponding to different wave bands of the system (the curves shown include 650 nm, 610 nm, 555 nm, 510 nm, 470 nm, and 435 nm); the physical meaning is that, for the light of the corresponding wavelength emitted at 0 degrees of the field of view, the deviation from the ideal image point after passing through the optical system; the abscissa is the deviation value in the direction of the optical axis, and the ordinate is the normalized coordinate at the pupil. Figure 14 The values shown in FIG. 2 are small, and the on-axis aberration (spherical aberration, chromatic aberration, etc.) of the optical lens 1 is well corrected.

[0397] Figure 11 The distortion map is used to represent the relative deviation of the beam convergence point (actual image height) from the ideal image height at different fields of view. Figure 11 In the distortion map shown in FIG. 3, the relative deviation is within 2%, which can ensure that the picture is not obviously distorted.

[0398] Embodiment Three

[0399] Please refer to Figure 16 and Figure 17 , Figure 16 is Figure 5 the structural schematic diagram of the camera module 30 in the long-focus end in embodiment three, Figure 17 is Figure 5 the structural schematic diagram of the camera module 30 in the macro end in embodiment three.

[0400] In some embodiments, the camera module 30 can include an optical lens 1, a photosensitive element 2, and a filter 3, and light passes through the optical lens 1, the filter 3, and the photosensitive element 2 in sequence to form an image. The optical lens 1 includes a first optical element G1 and a second optical element G2, and the second optical element G2 is located on the image side of the first optical element G1.

[0401] The first optical element G1 includes a front lens group G11, an optical path turning element G12, and a rear lens group G13.

[0402] For example, the front lens group G11 can include one lens, i.e., a first lens L1. The optical path turning element G12 can be a prism, and the optical path turning element G12 is used to change the optical axis from a first direction to a second direction. The rear lens group G13 can include one lens, i.e., a second lens L2.

[0403] Exemplarily, the first lens L1, the light path folding element G12 and the second lens L2 are different in refractive index, and thus the first lens L1 and the second lens L2 can be fixedly connected to the light path folding element G12 by means of adhesion, or the first lens L1, the light path folding element G12 and the second lens L2 can be formed into an integral component by means of fixed connection.

[0404] Exemplarily, the first lens L1 has positive refractive power, and the second lens L2 has negative refractive power. The object side surface of the first lens L1 is a convex surface, and the image side surface of the second lens L2 is a concave surface.

[0405] The second optical element G2 includes a first lens group G21, a second lens group G22 and a third lens group G23. The second lens group G22, the first lens group G21 and the third lens group G23 are arranged in sequence from the object side to the image side.

[0406] Exemplarily, the second lens group G22 includes one lens, i.e., the third lens L3. The second lens group G22 is a fixed lens group.

[0407] Exemplarily, the first lens group G21 includes three lenses, i.e., the fourth lens L4, the fifth lens L5 and the sixth lens L6 arranged in sequence from the object side to the image side. The first lens group G21 is a movable lens group, and the first lens group G21 can move along the optical axis thereof.

[0408] Exemplarily, the third lens group G23 includes two lenses, i.e., the seventh lens L7 and the eighth lens L8 arranged in sequence from the object side to the image side. The third lens group G23 is a fixed lens group.

[0409] In this embodiment, the first lens L1, the light path folding element G12 and the second lens L2 are relatively fixed, and the three can jointly rotate to realize the anti-shake of the optical lens 1, and thus the cooperation of the first lens L1, the light path folding element G12 and the second lens L2 enables the optical lens 1 to have strong anti-shake capability, better image quality and smaller size. Moreover, the first lens group G21 realizes the focusing of the optical lens 1 by moving.

[0410] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the second lens group G22, and there is no need to additionally provide an element for folding the light path of the photosensitive element 2, which is conducive to providing more setting space for other optical elements, and thus is conducive to improving the compactness of the camera module 30 and facilitating the miniaturization of the camera module 30.

[0411] In some embodiments, during the process of changing the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 is fixed, the first lens group G21 moves along the second direction towards the direction close to the first optical element G1, and the positions of the second lens group G22 and the third lens group G23 are fixed. That is, the distance between the first lens group G21 and the first optical element G1 is reduced, so that the object is imaged on the imaging surface, and the optical lens 1 can image the object at a closer distance.

[0412] Table 3a is shown below. Figure 16 and Figure 17 The surface type, the radius of curvature Y, the thickness, the refractive index, the Abbe number, the refractive mode and the thickness in the macro state of each lens, light folding element and filter 3 of the camera module 30 shown in Table 3a, Table 3b and Table 3c are shown below. The thickness includes the thickness of the structure itself and the spacing between the structures, and 1E+18 (scientific notation) means infinity. Table 3b, Table 3c are shown below. Figure 16 and Figure 17 The aspherical coefficients of each lens of the optical lens 1 of the camera module 30 shown in Table 3a, Table 3b and Table 3c in one possible embodiment are shown below.

[0413] Wherein the odd polynomial surface is a kind of aspherical surface. Wherein the blank in the "refraction mode" column can be "refraction" respectively. The data of the lens behind the prism is measured by the light turning path.

[0414] Table 3a

[0415]

[0416]

[0417] Table 3b

[0418]

[0419]

[0420] Table 3c

[0421]

[0422]

[0423] The aspherical surface in the optical lens 1 in Table 3a, Table 3b and Table 3c can be defined by the following aspherical curve equation, but not limited to:

[0424]

[0425] Wherein, z is the relative distance of the point on the aspherical surface with a distance of r from the optical axis to the tangent plane at the intersection point on the optical axis of the aspherical surface; r is the vertical distance of the point on the aspherical curve from the optical axis; c is the curvature; k is the conic coefficient; ai is the i-th order aspherical coefficient, which can be referred to Table 3b. Wherein, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7 and the eighth lens L8 are aspherical surfaces.

[0426] Please refer to Table 3d and Table 3e, Table 3d is Figure 16 and Figure 17 the basic parameters of the camera module 30 shown in Table 3d, and Table 3e is the relationship between the parameters in Table 3d.

[0427] In Table 1d, IMH is the image height of the optical lens 1, EPD is the entrance pupil diameter of the optical lens 1, EFL is the focal length of the optical lens 1, F1 is the focal length of the first optical element G1, fl is the focal length of the second lens group G22, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 in the optical axis direction, ttl is the optical length, ttl 1 is the total optical length, d is the maximum focusing stroke of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. Wherein, the values of EFL, F1, fl, fn and fm are effective values, and the unit is millimeter.

[0428] Table 3d

[0429] IMH (mm) 13.00 dm (mm) 3.85 EPD (mm) 8.46 ttl (mm) 24.50 EFL (mm) 20.70 ttl1 (mm) 23.10 F1 (mm) 42.79 d (mm) 2.60 fl (mm) 23.17 L (mm) 120.00 fn (mm) -9.98 fa (mm) 17.42 fm (mm) 15.42 fb (mm) -21.39

[0430] Table 3e

[0431]

[0432] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.1. And the ratio F1 / EFL of the focal length F1 of the first optical element G1 to the focal length EFL of the optical lens 1 is 2.07. At this time, the power of the image side surface and the object side surface of the first optical element G1 is fully utilized, and the first optical element G1 has appropriate power, the ratio F1 / EFL is small, which improves the compactness of the optical lens 1, is beneficial to the miniaturization of the optical lens 1, maximizes the performance of the first optical element G1, and makes the optical lens 1 have stronger anti-shake shooting capability and higher compactness.

[0433] In some embodiments, a ratio of a focal length fm of the first lens group G21 to a focal length EFL of the optical lens 1 is fm / EFL=0.75. At this time, the focal length fm of the first lens group G21 is appropriate, and the imaging effect of the optical lens 1 at the long-focus end and the macro end is good.

[0434] In some embodiments, a ratio of an axial thickness dm of the first lens group G21 to an optical length TTL of the optical lens 1 is dm / TTL=0.16. At this time, the thickness of the first lens group G21 is thin, which is beneficial to the miniaturization of the optical lens 1.

[0435] In some embodiments, a ratio of an optical total length TTL1 to an image height IMH of the optical lens 1 is TTL1 / IMH=1.78. At this time, the optical lens 1 has a larger image height and a smaller length size.

[0436] In some embodiments, a ratio of the optical total length TTL1 to an entrance pupil diameter EPD of the optical lens 1 is TTL1 / EPD=2.73. At this time, the optical lens 1 has a smaller length size and a larger light amount.

[0437] In some embodiments, a ratio of the optical total length TTL1 to the focal length EFL of the optical lens 1 is TTL1 / EFL=1.12. At this time, the optical lens 1 makes full use of the length space and has high compactness.

[0438] In some embodiments, a ratio of a maximum focusing stroke d of the first lens group G21 to the focal length EFL of the optical lens 1 is d / EFL=0.1.

[0439] In some embodiments, a ratio of a focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 is fa / EFL=0.84. At this time, the optical lens 1 has a stronger anti-shake capability and a smaller size.

[0440] In some embodiments, a ratio of a focal length fb of the second lens L2 to the focal length EFL of the optical lens 1 is fb / EFL=-1.03. At this time, the optical lens 1 has a stronger anti-shake shooting capability.

[0441] In some embodiments, a ratio of the focal length fa of the first lens L1 to the focal length fb of the second lens is fa / fb=-0.814. At this time, the first optical element G1 has a stronger anti-shake capability when anti-shaking, and the optical lens 1 has smaller aberration, that is, the optical lens 1 has a stronger anti-shake shooting capability.

[0442] Please refer to Figure 18 and Figure 19 , Figure 18 is Figure 16 the axial chromatic aberration diagram of the camera module 30 shown in FIG. 1, Figure 19 isFigure 16 The distortion map of the camera module 30 shown.

[0443] Figure 18 The axial chromatic aberration graph shown includes the spherical aberration curves corresponding to different wave bands of the system (the graph shown includes 650 nm, 610 nm, 555 nm, 510 nm, 470 nm, 435 nm); the physical meaning is that the light of the corresponding wavelength emitted at 0 degree field of view deviates from the ideal image point after passing through the optical system; the abscissa is the deviation value in the direction of the optical axis, and the ordinate is the normalized coordinate at the pupil. Figure 18 The values shown in the middle are small, and the on-axis aberration (spherical aberration, chromatic aberration, etc.) of the optical lens 1 is well corrected.

[0444] Figure 19 The distortion map is used to characterize the relative deviation of the beam convergence point (actual image height) of different fields of view from the ideal image height. Figure 19 In the distortion map shown, the relative deviation is within 1%, which can ensure that the picture is not obviously deformed.

[0445] Embodiment Four

[0446] Please refer to Figure 20 and Figure 21 , Figure 20 is Figure 5 The structural schematic diagram of the camera module 30 in embodiment four at the telephoto end, Figure 21 is Figure 5 The structural schematic diagram of the camera module 30 in embodiment four at the macro end.

[0447] In some embodiments, the camera module 30 can include an optical lens 1, a photosensitive element 2, and a filter 3, and light passes through the optical lens 1, the filter 3, and the photosensitive element 2 in sequence to form an image. Among them, the optical lens 1 includes a first optical element G1 and a second optical element G2, and the second optical element G2 is located on the image side of the first optical element G1.

[0448] Among them, the first optical element G1 includes a front lens group G11, a light path folding element G12, and a rear lens group G13.

[0449] For example, the front lens group G11 can include one lens, i.e. a first lens L1. The light path folding element G12 can be a prism, and the light path folding element G12 is used to change the optical axis from a first direction to a second direction. The rear lens group G13 can include one lens, i.e. a second lens L2.

[0450] Exemplarily, the first lens L1, the light path folding element G12 and the second lens L2 are different in refractive index, and thus the first lens L1 and the second lens L2 can be fixedly connected to the light path folding element G12 by means of adhesion, or the first lens L1, the light path folding element G12 and the second lens L2 can be formed into an integral component by means of fixed connection.

[0451] Exemplarily, the first lens L1 has positive refractive power, and the second lens L2 has negative refractive power. The object side surface of the first lens L1 is a convex surface, and the image side surface of the second lens L2 is a concave surface.

[0452] The second optical element G2 includes a first lens group G21, a second lens group G22 and a third lens group G23. The second lens group G22, the first lens group G21 and the third lens group G23 are arranged in sequence from the object side to the image side.

[0453] Exemplarily, the second lens group G22 includes one lens, i.e., the third lens L3. The second lens group G22 is a fixed lens group.

[0454] Exemplarily, the first lens group G21 includes three lenses, i.e., the fourth lens L4, the fifth lens L5 and the sixth lens L6 arranged in sequence from the object side to the image side. The first lens group G21 is a movable lens group, and the first lens group G21 can move along the optical axis thereof.

[0455] Exemplarily, the third lens group G23 includes two lenses, i.e., the seventh lens L7 and the eighth lens L8 arranged in sequence from the object side to the image side. The third lens group G23 is a fixed lens group.

[0456] In the embodiment, the first lens L1, the light path folding element G12 and the second lens L2 are relatively fixed, and the three can jointly rotate to realize the anti-shake of the optical lens 1, and thus the cooperation of the first lens L1, the light path folding element G12 and the second lens L2 enables the optical lens 1 to have strong anti-shake capability, good image quality and small size. Moreover, the first lens group G21 realizes the focusing of the optical lens 1 by moving.

[0457] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the second lens group G22, and there is no need to additionally provide an element for folding the light path of the photosensitive element 2, which is conducive to providing more setting space for other optical elements, and thus is conducive to improving the compactness of the camera module 30 and facilitating the miniaturization of the camera module 30.

[0458] In some embodiments, during the process of changing the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 is fixed, the first lens group G21 moves along the second direction towards the direction close to the first optical element G1, and the positions of the second lens group G22 and the third lens group G23 are fixed. That is, the distance between the first lens group G21 and the first optical element G1 is reduced, so that the object is imaged on the imaging surface, and the optical lens 1 can image the object at a closer distance.

[0459] Table 4a is shown below. Figure 20 and Figure 21 The surface type, the radius of curvature Y, the thickness, the refractive index, the Abbe number, the refractive mode and the thickness in the macro state of each lens, light folding element and filter 3 of the camera module 30 are shown in Table 4a. Among them, the thickness includes the thickness of the structure itself and the spacing between the structures, and 1E+18 (scientific notation) means infinity. Table 4b, Table 4c are the aspherical coefficients of each lens of the optical lens 1 of the camera module 30 in one possible embodiment. Figure 20 and Figure 21 The aspherical coefficients of each lens of the optical lens 1 of the camera module 30 in one possible embodiment.

[0460] Among them, the odd polynomial surface is one of the aspherical surfaces. Among them, the blank in the "refraction mode" column can be "refraction" respectively. The data of the lens behind the prism is measured by the light path conversion.

[0461] Table 4a

[0462]

[0463] Table 4b

[0464]

[0465]

[0466] Table 4c

[0467]

[0468]

[0469] The aspherical surfaces in the optical lens 1 in Table 4a, Table 4b and Table 4c can be defined by, but not limited to, the following aspherical curve equation:

[0470]

[0471] Wherein, z is the relative distance of the point on the aspherical surface with a distance of r from the optical axis to the tangent plane at the intersection point on the optical axis of the aspherical surface; r is the vertical distance of the point on the aspherical curve from the optical axis; c is the curvature; k is the conic coefficient; ai is the i-th order aspherical coefficient, which can be referred to Table 4b. Wherein, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7 and the eighth lens L8 are aspherical surfaces.

[0472] Please refer to Table 4d and Table 4e, Table 4d is Figure 20 and Figure 21 the basic parameters of the camera module 30 shown in Table 4d, and Table 4e is the relationship between the parameters in Table 4d.

[0473] In Table 4d, IMH is the image height of the optical lens 1, EPD is the entrance pupil diameter of the optical lens 1, EFL is the focal length of the optical lens 1, F1 is the focal length of the first optical element G1, fl is the focal length of the second lens group G22, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 in the direction of the optical axis, ttl is the optical length, ttl1 is the total optical length, d is the maximum focusing stroke of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. Wherein, the values of EFL, F1, fl, fn and fm are effective values, and the unit is millimeter.

[0474] Table 4d

[0475] IMH (mm) 13.00 dm (mm) 4.02 EPD (mm) 8.98 ttl (mm) 24.90 EFL (mm) 20.64 ttl1 (mm) 23.50 F1 (mm) 35.63 d (mm) 2.62 fl (mm) 35.84 L (mm) 120.00 fn (mm) -8.68 fa (mm) 17.82 fm (mm) 13.36 fb (mm) -24.37

[0476] Table 4e

[0477]

[0478] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.22. And the ratio F1 / EFL of the focal length F1 of the first optical element G1 to the focal length EFL of the optical lens 1 is 1.73. At this time, the optical power of the image side surface and the object side surface of the first optical element G1 is fully utilized, and the first optical element G1 has appropriate optical power, the ratio F1 / EFL is small, which improves the compactness of the optical lens 1, is beneficial to the miniaturization of the optical lens 1, maximizes the performance of the first optical element G1, and makes the optical lens 1 have stronger anti-shake shooting capability and higher compactness.

[0479] In some embodiments, the ratio of the focal length fm of the first lens group G21 to the focal length EFL of the optical lens 1, fm / EFL, is 0.65. In this case, the focal length fm of the first lens group G21 is appropriate, and the optical lens 1 produces good imaging results at both the telephoto and macro ends.

[0480] In some embodiments, the ratio dm / TTL of the axial thickness dm of the first lens group G21 in the optical axis direction to the optical length of the optical lens 1 is 0.16. In this case, the thickness of the first lens group G21 is thin, which is beneficial for the miniaturization of the optical lens 1.

[0481] In some embodiments, the ratio of the total optical length TTL1 to the image height IMH of the optical lens 1, TTL1 / IMH, is 1.81. In this case, the optical lens 1 has both a large image height and a small length.

[0482] In some embodiments, the ratio of the total optical length TTL1 to the entrance pupil diameter EPD of the optical lens 1, TTL1 / EPD, is 2.62. In this case, the optical lens 1 has a smaller length dimension and a larger amount of light entering the lens.

[0483] In some embodiments, the ratio of the total optical length TTL1 of the optical lens 1 to the focal length EFL of the optical lens 1, TTL1 / EFL, is 1.14. In this case, the optical lens 1 makes full use of the length space and has a high degree of compactness.

[0484] In some embodiments, the ratio d / EFL of the maximum focusing distance d of the first lens group G21 to the focal length EFL of the optical lens 1 is 0.13.

[0485] In some embodiments, the ratio fa / EFL of the focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 is 0.86. In this case, the optical lens 1 has strong image stabilization capability and a small size.

[0486] In some embodiments, the ratio of the focal length fb of the second lens L2 to the focal length EFL of the optical lens 1, fb / EFL, is -1.18. In this case, the optical lens 1 has strong image stabilization capabilities.

[0487] In some embodiments, the ratio fa / fb of the focal length fa of the first lens L1 to the focal length fb of the second lens is -0.731. In this case, the first optical element G1 has strong image stabilization capability and reduces the aberrations of the optical lens 1, that is, the optical lens 1 has strong image stabilization capability.

[0488] Please see Figure 22 and Figure 23 , Figure 22 yes Figure 20 The axial chromatic aberration diagram of the camera module 30 shown. Figure 23 yesFigure 20 The distortion map of the camera module 30 shown.

[0489] Figure 22 The axial chromatic aberration graph shown includes the spherical aberration curves corresponding to different wave bands of the system (the graph shown includes 650 nm, 610 nm, 555 nm, 510 nm, 470 nm, and 435 nm); the physical meaning is that the light of the corresponding wavelength emitted at 0 degrees of field deviates from the ideal image point after passing through the optical system; the abscissa is the deviation value in the direction of the optical axis, and the ordinate is the normalized coordinate at the pupil. Figure 22 The values shown in the middle are small, and the on-axis aberration (spherical aberration, chromatic aberration, etc.) of the optical lens 1 is well corrected.

[0490] Figure 23 The distortion map is used to characterize the relative deviation of the beam convergence point (actual image height) of different fields of view from the ideal image height. Figure 23 In the distortion map shown, the relative deviation is within 2%, which can ensure that the picture is not significantly distorted.

[0491] Embodiment five

[0492] Please refer to Figure 24 and Figure 25 , Figure 24 is Figure 5 The structural schematic diagram of the camera module 30 shown in embodiment five is in the telephoto end, Figure 25 is Figure 5 The structural schematic diagram of the camera module 30 shown in embodiment five is in the macro end.

[0493] In some embodiments, the camera module 30 can include an optical lens 1, a photosensitive element 2, and a filter 3, and light passes through the optical lens 1, the filter 3, and the photosensitive element 2 in sequence to form an image. Among them, the optical lens 1 includes a first optical element G1 and a second optical element G2, and the second optical element G2 is located on the image side of the first optical element G1.

[0494] Among them, the first optical element G1 includes a front lens group G11, a light path folding element G12, and a rear lens group G13.

[0495] For example, the front lens group G11 can include one lens, i.e., a first lens L1. The light path folding element G12 can be a prism, and the light path folding element G12 is used to change the optical axis from a first direction to a second direction. The rear lens group G13 can include one lens, i.e., a second lens L2.

[0496] Exemplarily, the first lens L1, the light path folding element G12 and the second lens L2 are different in refractive index, and thus the first lens L1 and the second lens L2 can be fixedly connected to the light path folding element G12 by means of adhesion, or the first lens L1, the light path folding element G12 and the second lens L2 can be formed into an integral component by means of fixed connection.

[0497] Exemplarily, the first lens L1 has positive refractive power, and the second lens L2 has negative refractive power. The object side surface of the first lens L1 is a convex surface, and the image side surface of the second lens L2 is a concave surface.

[0498] The second optical element G2 includes a first lens group G21, a second lens group G22 and a third lens group G23. The second lens group G22, the first lens group G21 and the third lens group G23 are arranged in sequence from the object side to the image side.

[0499] Exemplarily, the second lens group G22 includes one lens, i.e., the third lens L3. The second lens group G22 is a fixed lens group.

[0500] Exemplarily, the first lens group G21 includes three lenses, i.e., the fourth lens L4, the fifth lens L5 and the sixth lens L6 arranged in sequence from the object side to the image side. The first lens group G21 is a movable lens group, and the first lens group G21 can move along the optical axis thereof.

[0501] Exemplarily, the third lens group G23 includes two lenses, i.e., the seventh lens L7 and the eighth lens L8 arranged in sequence from the object side to the image side. The third lens group G23 is a fixed lens group.

[0502] In the embodiment, the first lens L1, the light path folding element G12 and the second lens L2 are relatively fixed, and the three can jointly rotate to realize the anti-shake of the optical lens 1, and thus the cooperation of the first lens L1, the light path folding element G12 and the second lens L2 enables the optical lens 1 to have strong anti-shake capability, good image quality and small size. Moreover, the first lens group G21 realizes the focusing of the optical lens 1 by moving.

[0503] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the second lens group G22, and there is no need to additionally provide an element for folding the light path of the photosensitive element 2, which is conducive to providing more setting space for other optical elements, and thus is conducive to improving the compactness of the camera module 30 and facilitating the miniaturization of the camera module 30.

[0504] In some embodiments, during the process of changing the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 is fixed, the first lens group G21 moves along the second direction towards the direction close to the first optical element G1, and the positions of the second lens group G22 and the third lens group G23 are fixed. That is, the distance between the first lens group G21 and the first optical element G1 is reduced, so that the object is imaged on the imaging surface, and the optical lens 1 can image the object at a closer distance.

[0505] Table 5a is shown in Table 5a Figure 24 and Figure 25 The surface type, the radius of curvature Y, the thickness, the refractive index, the Abbe number, the refractive mode, and the thickness in the macro state of each lens, light folding element and filter 3 of the camera module 30 are shown. Among them, the thickness includes the thickness of the structure itself and the spacing between the structures, and 1E+18 (scientific notation) means infinity. Table 5b, Table 5c is Figure 24 and Figure 25 The aspheric coefficients of each lens of the optical lens 1 of the camera module 30 in one possible embodiment are shown in Table 5b, Table 5c.

[0506] Among them, the odd polynomial surface is one of the aspheric surfaces. Among them, the blank in the “refraction mode” column can be “refraction” respectively. The data of the lens behind the prism is measured by the light path conversion.

[0507] Table 5a

[0508]

[0509]

[0510] Table 5b

[0511] Surface Number Y Radius k 2nd Order Coefficient 4th Order Coefficient 6th Order Coefficient 8th Order Coefficient 10th order coefficient 12th order coefficient 1 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 2 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 3 1.05E+01 0.00E+00 0.00E+00 -2.52E-05 -2.37E-05 1.57E-05 -6.22E-06 1.56E-06 4 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 5 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 6 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 7 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 8 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 9 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 10 -2.88E+01 -3.76E-07 0.00E+00 -8.81E-05 4.66E-06 1.31E-06 -1.71E-07 3.23E-09 11 -9.75E+00 0.00E+00 0.00E+00 -1.97E-04 -1.58E-04 3.00E-04 -3.43E-04 2.59E-04 12 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 13 -7.59E+00 0.00E+00 0.00E+00 3.61E-04 -1.16E-03 1.87E-03 -2.09E-03 1.57E-03 14 -1.17E+01 0.00E+00 0.00E+00 9.72E-04 -1.93E-03 3.22E-03 -3.63E-03 2.78E-03 15 -9.68E+00 0.00E+00 0.00E+00 3.51E-03 -8.89E-04 4.12E-04 -4.51E-05 -1.01E-05 16 -8.63E+00 0.00E+00 0.00E+00 2.71E-03 -4.28E-04 3.56E-04 -3.14E-05 -2.58E-05 17 -1.04E+01 0.00E+00 0.00E+00 -2.96E-04 3.12E-03 -1.57E-03 6.91E-04 -2.57E-04 18 -1.27E+01 0.00E+00 0.00E+00 6.72E-04 2.91E-03 -1.48E-03 5.73E-04 -1.83E-04 19 2.15E+01 0.00E+00 0.00E+00 9.45E-04 1.32E-03 -6.21E-04 2.69E-04 -8.80E-05 20 5.77E+00 0.00E+00 0.00E+00 -2.43E-04 8.55E-04 -4.88E-04 2.44E-04 -8.57E-05 21 5.84E+00 0.00E+00 0.00E+00 -5.66E-03 2.43E-03 -6.80E-04 1.49E-04 -3.18E-05 22 3.45E+01 0.00E+00 0.00E+00 -8.34E-03 4.22E-03 -1.37E-03 3.16E-04 -5.14E-05 23 7.40E+00 0.00E+00 0.00E+00 -1.43E-02 9.46E-03 -3.81E-03 9.69E-04 -1.65E-04 24 1.44E+01 0.00E+00 0.00E+00 -9.14E-03 7.45E-03 -2.95E-03 7.06E-04 -1.12E-04 25 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 26 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 27 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

[0512] Table 5c

[0513]

[0514]

[0515]

[0516] The aspheric surfaces in the optical lens 1 in Table 5a, Table 5b and Table 5c can be defined by, but not limited to, the following aspheric curve equation:

[0517]

[0518] Wherein, z is the relative distance of the point on the aspherical surface with a distance r from the optical axis to the tangent plane at the intersection point on the optical axis of the aspherical surface; r is the vertical distance of the point on the aspherical curve from the optical axis; c is the curvature; k is the conic coefficient; ai is the i-th order aspherical coefficient, which can be referred to Table 5b. Wherein, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7 and the eighth lens L8 are aspherical surfaces.

[0519] Please refer to Table 5d and Table 5e, Table 5d is Figure 24 and Figure 25 the basic parameters of the camera module 30 shown in Table 5d, and Table 5e is the relationship between the parameters in Table 5d.

[0520] In Table 5d, IMH is the image height of the optical lens 1, EPD is the entrance pupil diameter of the optical lens 1, EFL is the focal length of the optical lens 1, F1 is the focal length of the first optical element G1, fl is the focal length of the second lens group G22, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 in the direction of the optical axis, ttl is the optical length, ttl1 is the total optical length, d is the maximum focusing stroke of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. Wherein, the values of EFL, F1, fl, fn and fm are effective values, and the unit is millimeter.

[0521] Table 5d

[0522] IMH (mm) 13.00 dm (mm) 3.99 EPD (mm) 8.41 ttl (mm) 24.05 EFL (mm) 20.70 ttl1 (mm) 22.65 F1 (mm) 32.99 d (mm) 2.74 fl (mm) 37.83 L (mm) 120.00 fn (mm) -8.64 fa (mm) 16.31 fm (mm) 14.24 fb (mm) -21.89

[0523] Table 5e

[0524]

[0525]

[0526] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.08. And the ratio F1 / EFL of the focal length F1 of the first optical element G1 to the focal length EFL of the optical lens 1 is 1.59. At this time, the power of the image side surface and the object side surface of the first optical element G1 is fully utilized, and the first optical element G1 has appropriate power, the ratio F1 / EFL is small, which improves the compactness of the optical lens 1, is beneficial to the miniaturization of the optical lens 1, maximizes the performance of the first optical element G1, and makes the optical lens 1 have stronger anti-shake shooting capability and higher compactness.

[0527] In some embodiments, the ratio of the focal length fm of the first lens group G21 to the focal length EFL of the optical lens 1 is fm / EFL=0.69. At this time, the focal length fm of the first lens group G21 is appropriate, and the imaging effect of the optical lens 1 at the long-focus end and the macro end is good.

[0528] In some embodiments, the ratio of the thickness dm of the first lens group G21 in the axial direction to the optical length TTL of the optical lens 1 is dm / TTL=0.17. At this time, the thickness of the first lens group G21 is thin, which is beneficial to the miniaturization of the optical lens 1.

[0529] In some embodiments, the ratio of the total optical length TTL1 to the image height IMH of the optical lens 1 is TTL1 / IMH=1.74. At this time, the optical lens 1 has a larger image height and a smaller length size.

[0530] In some embodiments, the ratio of the total optical length TTL1 to the entrance pupil diameter EPD of the optical lens 1 is TTL1 / EPD=2.69. At this time, the optical lens 1 has a smaller length size and a larger light amount.

[0531] In some embodiments, the ratio of the total optical length TTL1 of the optical lens 1 to the focal length EFL of the optical lens 1 is TTL1 / EFL=1.09. At this time, the optical lens 1 makes full use of the length space, and has high compactness.

[0532] In some embodiments, the ratio of the maximum focusing stroke d of the first lens group G21 to the focal length EFL of the optical lens 1 is d / EFL=0.13.

[0533] In some embodiments, the ratio of the focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 is fa / EFL=0.79. At this time, the optical lens 1 has a stronger anti-shake capability and a smaller size.

[0534] In some embodiments, the ratio of the focal length fb of the second lens L2 to the focal length EFL of the optical lens 1 is fb / EFL=-1.06. At this time, the optical lens 1 has a stronger anti-shake shooting capability.

[0535] In some embodiments, the ratio of the focal length fa of the first lens L1 to the focal length fb of the second lens is fa / fb=-0.745. At this time, the first optical element G1 has a stronger anti-shake capability when anti-shaking, and the optical lens 1 has smaller aberration, i.e., the optical lens 1 has a stronger anti-shake shooting capability.

[0536] Please refer to Figure 26 and Figure 27 , Figure 26 is Figure 24 the axial chromatic aberration diagram of the camera module 30 shown inFigure 27 is Figure 24 the distortion map of the camera module 30 shown in FIG. 6B.

[0537] Figure 26 The axial chromatic aberration curve shown in FIG. 6C includes the spherical aberration curves corresponding to different wave bands (shown in FIG. 6C to include 650 nm, 610 nm, 555 nm, 510 nm, 470 nm, and 435 nm) of the system; the physical meaning is that the light of the corresponding wavelength emitted at 0-degree field of view deviates from the ideal image point after passing through the optical system; the abscissa is the deviation value in the direction of the optical axis, and the ordinate is the normalized coordinate at the pupil. Figure 26 The values shown in FIG. 6C are all small, indicating that the on-axis aberration (spherical aberration, chromatic aberration, etc.) of the optical lens 1 is well corrected.

[0538] Figure 27 The distortion map is used to represent the relative deviation of the beam convergence point (actual image height) of different fields of view from the ideal image height. Figure 27 In the distortion map shown in FIG. 6B, the relative deviation is within 2%, which can ensure that the picture is not obviously deformed.

[0539] Embodiment Six

[0540] Please refer to Figure 28 and Figure 29 , Figure 28 is Figure 5 the structural schematic diagram of the camera module 30 in a long-focus end in embodiment six, Figure 29 is Figure 5 the structural schematic diagram of the camera module 30 in a macro end in embodiment six.

[0541] In some embodiments, the camera module 30 can include an optical lens 1, a photosensitive element 2, and a filter 3, and light rays sequentially pass through the optical lens 1, the filter 3, and the photosensitive element 2 to form an image. The optical lens 1 includes a first optical element G1 and a second optical element G2, and the second optical element G2 is located on the image side of the first optical element G1.

[0542] The first optical element G1 includes a front lens group G11, an optical path turning element G12, and a rear lens group G13.

[0543] For example, the front lens group G11 can include one lens, i.e., a first lens L1. The optical path turning element G12 can be a prism, and the optical path turning element G12 is used to change the optical axis from a first direction to a second direction. The rear lens group G13 can include one lens, i.e., a second lens L2.

[0544] Exemplarily, the first lens L1, the light path folding element G12 and the second lens L2 are different in refractive index, and thus the first lens L1 and the second lens L2 can be fixedly connected to the light path folding element G12 by means of adhesion, or the first lens L1, the light path folding element G12 and the second lens L2 can be formed into an integral component by means of fixed connection.

[0545] Exemplarily, the first lens L1 has positive refractive power, and the second lens L2 has negative refractive power. The object side surface of the first lens L1 is a convex surface, and the image side surface of the second lens L2 is a concave surface.

[0546] The second optical element G2 includes a first lens group G21, a second lens group G22 and a third lens group G23. The second lens group G22, the first lens group G21 and the third lens group G23 are arranged in sequence from the object side to the image side.

[0547] Exemplarily, the second lens group G22 includes one lens, i.e., the third lens L3. The second lens group G22 is a fixed lens group.

[0548] Exemplarily, the first lens group G21 includes three lenses, i.e., the fourth lens L4, the fifth lens L5 and the sixth lens L6 arranged in sequence from the object side to the image side. The first lens group G21 is a movable lens group, and the first lens group G21 can move along the optical axis thereof.

[0549] Exemplarily, the third lens group G23 includes two lenses, i.e., the seventh lens L7 and the eighth lens L8 arranged in sequence from the object side to the image side. The third lens group G23 is a fixed lens group.

[0550] In the embodiment, the first lens L1, the light path folding element G12 and the second lens L2 are relatively fixed, and the three can jointly rotate to realize the anti-shake of the optical lens 1, and thus the cooperation of the first lens L1, the light path folding element G12 and the second lens L2 enables the optical lens 1 to have strong anti-shake capability, good image quality and small size. Moreover, the first lens group G21 realizes the focusing of the optical lens 1 by moving.

[0551] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the second lens group G22, and there is no need to additionally provide an element for folding the light path of the photosensitive element 2, which is conducive to providing more setting space for other optical elements, and thus is conducive to improving the compactness of the camera module 30 and facilitating the miniaturization of the camera module 30.

[0552] In some embodiments, during the process of changing the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 is fixed, the first lens group G21 moves along the second direction towards the direction close to the first optical element G1, and the positions of the second lens group G22 and the third lens group G23 are fixed. That is, the distance between the first lens group G21 and the first optical element G1 is reduced, so that the object is imaged on the imaging surface, and the optical lens 1 can image the object at a closer distance.

[0553] Table 6a is shown in Table 6a Figure 28 and Figure 29 The surface type, the radius of curvature Y, the thickness, the refractive index, the Abbe number, the refractive mode, and the thickness in the macro state of each lens, light folding element and filter 3 of the camera module 30 are shown. Among them, the thickness includes the thickness of the structure itself and the spacing between the structures, and 1E+18 (scientific notation) means infinity. Table 6b, Table 6c Figure 28 and Figure 29 The aspheric coefficients of each lens of the optical lens 1 of the camera module 30 in one possible embodiment are shown.

[0554] Among them, the odd polynomial surface is a kind of aspheric surface. Among them, the blank in the “refraction mode” column can be “refraction” respectively. The data of the lens behind the prism is measured by turning the light path.

[0555] Table 6a

[0556]

[0557]

[0558] Table 6b

[0559]

[0560]

[0561] Table 6c

[0562]

[0563]

[0564] The aspheric surface in the optical lens 1 in Table 6a, Table 6b and Table 6c can be defined by the following aspheric curve equation, but not limited to:

[0565]

[0566] Wherein, z is the relative distance of the point on the aspherical surface with a distance of r from the optical axis to the tangent plane at the intersection point on the optical axis of the aspherical surface; r is the vertical distance of the point on the aspherical curve from the optical axis; c is the curvature; k is the conic coefficient; ai is the i-th order aspherical coefficient, which can be referred to Table 6b. Wherein, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, the eighth lens L8.

[0567] Please refer to Table 6d and Table 6e, Table 6d is Figure 28 and Figure 29 the basic parameters of the camera module 30 shown in Table 6e is the relationship between the parameters in Table 6d.

[0568] In Table 6d, IMH is the image height of the optical lens 1, EPD is the entrance pupil diameter of the optical lens 1, EFL is the focal length of the optical lens 1, F1 is the focal length of the first optical element G1, fl is the focal length of the second lens group G22, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 in the direction of the optical axis, ttl is the optical length, ttl 1 is the total optical length, d is the maximum focusing stroke of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. Wherein, the values of EFL, F1, fl, fn and fm are effective values, and the unit is millimeter.

[0569] Table 6d

[0570] IMH (mm) 13.00 dm (mm) 3.59 EPD (mm) 8.40 ttl (mm) 24.00 EFL (mm) 20.70 ttl1 (mm) 22.60 F1 (mm) 30.38 d (mm) 2.68 fl (mm) 36.12 L (mm) 120.00 fn (mm) -8.14 fa (mm) 17.43 fm (mm) 14.17 fb (mm) -27.77

[0571] Table 6e

[0572]

[0573] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.06. And the ratio F1 / EFL of the focal length F1 of the first optical element G1 to the focal length EFL of the optical lens 1 is 1.47. At this time, the power of the image side surface and the object side surface of the first optical element G1 is fully utilized, and the first optical element G1 has appropriate power, the ratio F1 / EFL is small, which improves the compactness of the optical lens 1, is beneficial to the miniaturization of the optical lens 1, maximizes the performance of the first optical element G1, and makes the optical lens 1 have stronger anti-shake shooting capability and higher compactness.

[0574] In some embodiments, a ratio of a focal length fm of the first lens group G21 to a focal length EFL of the optical lens 1 is 0.68. At this time, the focal length fm of the first lens group G21 is appropriate, and the imaging effect of the optical lens 1 at the long-focus end and the macro end is good.

[0575] In some embodiments, a ratio of an axial thickness dm of the first lens group G21 to an optical length TTL of the optical lens 1 is 0.15. At this time, the thickness of the first lens group G21 is thin, which is beneficial to the miniaturization of the optical lens 1.

[0576] In some embodiments, a ratio of an optical total length TTL1 to an image height IMH of the optical lens 1 is 1.74. At this time, the optical lens 1 has a larger image height and a smaller length size.

[0577] In some embodiments, a ratio of the optical total length TTL1 to an entrance pupil diameter EPD of the optical lens 1 is 2.69. At this time, the optical lens 1 has a smaller length size and a larger light amount.

[0578] In some embodiments, a ratio of the optical total length TTL1 to the focal length EFL of the optical lens 1 is 1.09. At this time, the optical lens 1 fully utilizes the length space and has high compactness.

[0579] In some embodiments, a ratio of a maximum focusing stroke d of the first lens group G21 to the focal length EFL of the optical lens 1 is 0.13.

[0580] In some embodiments, a ratio of a focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 is 0.84. At this time, the optical lens 1 has a stronger anti-shake capability and a smaller size.

[0581] In some embodiments, a ratio of a focal length fb of the second lens L2 to the focal length EFL of the optical lens 1 is -1.34. At this time, the optical lens 1 has a stronger anti-shake shooting capability.

[0582] In some embodiments, a ratio of the focal length fa of the first lens L1 to the focal length fb of the second lens is -0.627. At this time, the first optical element G1 has a stronger anti-shake capability when anti-shaking, and the optical lens 1 has smaller aberration, that is, the optical lens 1 has a stronger anti-shake shooting capability.

[0583] Please refer to Figure 30 and Figure 31 , Figure 30 is Figure 28 the axial chromatic aberration diagram of the camera module 30 shown in Figure 31 isFigure 28 The distortion map of the camera module 30 shown.

[0584] Figure 30 The axial chromatic aberration graph shown includes the spherical aberration curves corresponding to different wave bands of the system (the graph shown includes 650 nm, 610 nm, 555 nm, 510 nm, 470 nm, 435 nm); the physical meaning is that the light of the corresponding wavelength emitted at 0 degree field of view deviates from the ideal image point after passing through the optical system; the abscissa is the deviation value in the direction of the optical axis, and the ordinate is the normalized coordinate at the pupil. Figure 30 The values shown in the middle are small, and the on-axis aberration (spherical aberration, chromatic aberration, etc.) of the optical lens 1 is well corrected.

[0585] Figure 31 The distortion map is used to characterize the relative deviation of the beam convergence point (actual image height) of different fields of view from the ideal image height. Figure 31 In the distortion map shown, the relative deviation is within 2%, which can ensure that the picture is not obviously deformed.

[0586] Embodiment seven

[0587] Please refer to Figure 32 and Figure 33 , Figure 32 is Figure 5 The structural schematic diagram of the camera module 30 shown in embodiment seven is in the telephoto end, Figure 33 is Figure 5 The structural schematic diagram of the camera module 30 shown in embodiment seven is in the macro end.

[0588] In some embodiments, the camera module 30 can include an optical lens 1, a photosensitive element 2, and a filter 3, and light passes through the optical lens 1, the filter 3, and the photosensitive element 2 in sequence to form an image. Among them, the optical lens 1 includes a first optical element G1 and a second optical element G2, and the second optical element G2 is located on the image side of the first optical element G1.

[0589] Among them, the first optical element G1 includes a front lens group G11, a light path folding element G12, and a rear lens group G13.

[0590] For example, the front lens group G11 can include one lens, i.e. a first lens L1. The light path folding element G12 can be a prism, and the light path folding element G12 is used to change the optical axis from a first direction to a second direction. The rear lens group G13 can include one lens, i.e. a second lens L2.

[0591] For example, the first lens L1, the light path folding element G12 and the second lens L2 have the same refractive index, and thus the first lens L1 and the second lens L2 can be fixedly connected to the light path folding element G12 by means of adhesion, or the first lens L1, the light path folding element G12 and the second lens L2 can be formed as an integral component by means of one-piece molding.

[0592] For example, the first lens L1 has positive refractive power, and the second lens L2 has negative refractive power. The object side surface of the first lens L1 is a convex surface, and the image side surface of the second lens L2 is a concave surface.

[0593] The second optical element G2 includes a first lens group G21, a second lens group G22 and a third lens group G23. The second lens group G22, the first lens group G21 and the third lens group G23 are arranged in sequence from the object side to the image side.

[0594] For example, the second lens group G22 includes one lens, i.e., the third lens L3. The second lens group G22 is a fixed lens group.

[0595] For example, the first lens group G21 includes three lenses, i.e., the fourth lens L4, the fifth lens L5 and the sixth lens L6 arranged in sequence from the object side to the image side. The first lens group G21 is a movable lens group, and the first lens group G21 can move along the optical axis thereof.

[0596] For example, the third lens group G23 includes two lenses, i.e., the seventh lens L7, the eighth lens L8 and the ninth lens L9 arranged in sequence from the object side to the image side. The third lens group G23 is a fixed lens group.

[0597] In this embodiment, the first lens L1, the light path folding element G12 and the second lens L2 are relatively fixed, and the three can jointly rotate to realize the anti-shake of the optical lens 1. Thus, through the cooperation of the first lens L1, the light path folding element G12 and the second lens L2, the optical lens 1 has strong anti-shake capability, good image quality and small size. Moreover, the first lens group G21 realizes the focusing of the optical lens 1 by moving.

[0598] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the second lens group G22, and there is no need to additionally provide an element for folding the light path of the photosensitive element 2, which is beneficial to providing more setting space for other optical elements, and thus is beneficial to improving the compactness of the camera module 30 and facilitating the miniaturization of the camera module 30.

[0599] In some embodiments, during the process of changing the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 is fixed, the first lens group G21 moves along the second direction towards the direction close to the first optical element G1, and the positions of the second lens group G22 and the third lens group G23 are fixed. That is, the distance between the first lens group G21 and the first optical element G1 is reduced, so that the object is imaged on the imaging surface, and the optical lens 1 can image the object at a closer distance.

[0600] Table 7a is shown in Table 7a Figure 32 and Figure 33 the surface type, the radius of curvature Y, the thickness, the refractive index, the Abbe number, the refractive mode of each lens, light folding element and filter 3 of the camera module 30 shown in Figure 32 and Figure 33 the aspherical coefficients of each lens of the optical lens 1 of the camera module 30 shown in Table 7b, Table 7c is a possible embodiment.

[0601] wherein the odd polynomial surface is a kind of aspherical surface. Wherein the blank in the "refraction mode" column can be "refraction" respectively. The data of the lens behind the prism is measured by the light path conversion.

[0602] Table 7a

[0603]

[0604]

[0605] Table 7b

[0606]

[0607]

[0608] Table 7c

[0609]

[0610]

[0611]

[0612] The aspherical surface in the optical lens 1 in Table 7a, Table 7b and Table 7c can be defined by the following aspherical curve equation, but not limited to:

[0613]

[0614] Wherein, z is the relative distance of the point on the aspherical surface with a distance of r from the optical axis to the tangent plane at the intersection point on the optical axis of the aspherical surface; r is the vertical distance of the point on the aspherical curve from the optical axis; c is the curvature; k is the conic coefficient; ai is the i-th order aspherical coefficient, which can be referred to Table 7b. Wherein, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7 and the eighth lens L8 are aspherical surfaces.

[0615] Please refer to Table 7d and Table 7e, Table 7d is the basic parameters of the camera module 30 as shown in Table 7d and Table 7e is the relationship between the parameters in Table 7d. Figure 32 and Figure 33

[0616] In Table 1d, IMH is the image height of the optical lens 1, EPD is the entrance pupil diameter of the optical lens 1, EFL is the focal length of the optical lens 1, F1 is the focal length of the first optical element G1, fl is the focal length of the second lens group G22, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 in the direction of the optical axis, ttl is the optical length, ttl 1 is the total optical length, d is the maximum focusing stroke of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. Wherein, the values of EFL, F1, fl, fn and fm are effective values, and the unit is millimeter.

[0617] Table 7d

[0618] IMH (mm) 13.00 dm (mm) 3.87 EPD (mm) 8.48 ttl (mm) 24.40 EFL (mm) 20.70 ttl1 (mm) 23.00 F1 (mm) 43.10 d (mm) 2.67 fl (mm) 25.00 L (mm) 120.00 fn (mm) -9.30 fa (mm) 17.42 fm (mm) 15.22 fb (mm) -21.04

[0619] Table 7e

[0620]

[0621] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.1. And the ratio F1 / EFL of the focal length F1 of the first optical element G1 to the focal length EFL of the optical lens 1 is 2.08. At this time, the power of the image side surface and the object side surface of the first optical element G1 is fully utilized, and the first optical element G1 has appropriate power, the ratio F1 / EFL is small, which improves the compactness of the optical lens 1, is beneficial to the miniaturization of the optical lens 1, maximizes the performance of the first optical element G1, and makes the optical lens 1 have stronger anti-shake shooting capability and higher compactness.

[0622] ​In some embodiments, a ratio fm / EFL of the focal length fm of the first lens group G21 to the focal length EFL of the optical lens 1 is 0.74. At this time, the focal length fm of the first lens group G21 is appropriate, and the imaging effect of the optical lens 1 at the long-focus end and the macro end is good.

[0623] In some embodiments, a ratio dm / TTL of the thickness dm of the first lens group G21 in the axial direction of the optical axis to the optical length of the optical lens 1 is 0.16. At this time, the thickness of the first lens group G21 is thin, which is beneficial to the miniaturization of the optical lens 1.

[0624] In some embodiments, a ratio TTL1 / IMH of the total optical length TTL1 to the image height IMH of the optical lens 1 is 1.77. At this time, the optical lens 1 has a larger image height and a smaller length size.

[0625] In some embodiments, a ratio TTL1 / EPD of the total optical length TTL1 to the entrance pupil diameter EPD of the optical lens 1 is 2.71. At this time, the optical lens 1 has a smaller length size and a larger light amount.

[0626] In some embodiments, a ratio TTL1 / EFL of the total optical length TTL1 of the optical lens 1 to the focal length EFL of the optical lens 1 is 1.11. At this time, the optical lens 1 makes full use of the length space and has high compactness.

[0627] In some embodiments, a ratio d / EFL of the maximum focusing stroke d of the first lens group G21 to the focal length EFL of the optical lens 1 is 0.13.

[0628] In some embodiments, a ratio fa / EFL of the focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 is 0.84. At this time, the optical lens 1 has a stronger anti-shake capability and a smaller size.

[0629] In some embodiments, a ratio fb / EFL of the focal length fb of the second lens L2 to the focal length EFL of the optical lens 1 is -1.02. At this time, the optical lens 1 has a stronger anti-shake shooting capability.

[0630] In some embodiments, a ratio fa / fb of the focal length fa of the first lens L1 to the focal length fb of the second lens is -0.828. At this time, the first optical element G1 has a stronger anti-shake capability when anti-shaking, and the optical lens 1 has smaller aberration, that is, the optical lens 1 has a stronger anti-shake shooting capability.

[0631] Please refer to Figure 34 and Figure 35 , Figure 34 are Figure 32 axial chromatic aberration diagrams of the camera module 30 shown in Figure 35 areFigure 32 The distortion map of the camera module 30 shown.

[0632] Figure 34 The axial chromatic aberration graph shown includes the spherical aberration curves corresponding to different wave bands of the system (the graph shown includes 650 nm, 610 nm, 555 nm, 510 nm, 470 nm, 435 nm); the physical meaning is that the light of the corresponding wavelength emitted at 0 degree field of view deviates from the ideal image point after passing through the optical system; the abscissa is the deviation value in the direction of the optical axis, and the ordinate is the normalized coordinate at the pupil. Figure 34 The values shown in the middle are small, and the on-axis aberration (spherical aberration, chromatic aberration, etc.) of the optical lens 1 is well corrected.

[0633] Figure 35 The distortion map is used to characterize the relative deviation of the beam convergence point (actual image height) of different fields of view from the ideal image height. Figure 35 In the distortion map shown, the relative deviation is within 1%, which can ensure that the picture is not obviously deformed.

[0634] Embodiment eight

[0635] Please refer to Figure 36 and Figure 37 , Figure 36 is Figure 5 The structural schematic diagram of the camera module 30 in embodiment eight is shown in the long focal end, Figure 37 is Figure 5 The structural schematic diagram of the camera module 30 in embodiment eight is shown in the macro end.

[0636] In some embodiments, the camera module 30 can include an optical lens 1, a photosensitive element 2, and a filter 3, and light passes through the optical lens 1, the filter 3, and the photosensitive element 2 in sequence to form an image. Among them, the optical lens 1 includes a first optical element G1 and a second optical element G2, and the second optical element G2 is located on the image side of the first optical element G1.

[0637] Among them, the first optical element G1 includes a front lens group G11, a light path folding element G12, and a rear lens group G13.

[0638] For example, the front lens group G11 can include a lens, i.e. a first lens L1. The light path folding element G12 can be a prism, and the light path folding element G12 is used to change the optical axis from a first direction to a second direction. The rear lens group G13 can include a lens, i.e. a second lens L2.

[0639] Exemplarily, the first lens L1, the light path folding element G12 and the second lens L2 are different in refractive index, and thus the first lens L1 and the second lens L2 can be fixedly connected to the light path folding element G12 by means of adhesion, or the first lens L1, the light path folding element G12 and the second lens L2 can be formed into an integral component by means of fixed connection.

[0640] Exemplarily, the first lens L1 has positive refractive power, and the second lens L2 has negative refractive power. The object side surface of the first lens L1 is a convex surface, and the image side surface of the second lens L2 is a concave surface.

[0641] The second optical element G2 includes a first lens group G21, a second lens group G22 and a third lens group G23. The second lens group G22, the first lens group G21 and the third lens group G23 are arranged in sequence from the object side to the image side.

[0642] Exemplarily, the second lens group G22 includes one lens, i.e., a third lens L3. The second lens group G22 is a fixed lens group.

[0643] Exemplarily, the first lens group G21 includes three lenses, i.e., a fourth lens L4, a fifth lens L5 and a sixth lens L6 arranged in sequence from the object side to the image side. The first lens group G21 is a movable lens group, and the first lens group G21 can move along the optical axis thereof.

[0644] Exemplarily, the third lens group G23 includes two lenses, i.e., a seventh lens L7 and an eighth lens L8 arranged in sequence from the object side to the image side. The third lens group G23 is a fixed lens group.

[0645] In the embodiment, the first lens L1, the light path folding element G12 and the second lens L2 are relatively fixed, and the three can jointly rotate to realize the anti-shake of the optical lens 1, and thus the cooperation of the first lens L1, the light path folding element G12 and the second lens L2 enables the optical lens 1 to have strong anti-shake capability, good image quality and small size. Moreover, the first lens group G21 realizes the focusing of the optical lens 1 by moving.

[0646] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the second lens group G22, and there is no need to additionally provide an element for folding the light path of the photosensitive element 2, which is conducive to providing more setting space for other optical elements, and thus is conducive to improving the compactness of the camera module 30 and facilitating the miniaturization of the camera module 30.

[0647] In some embodiments, during the process of changing the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 is fixed, the first lens group G21 moves along the second direction towards the direction close to the first optical element G1, and the positions of the second lens group G22 and the third lens group G23 are fixed. That is, the distance between the first lens group G21 and the first optical element G1 is reduced, so that the object is imaged on the imaging surface, and the optical lens 1 can image the object at a closer distance.

[0648] Table 8a is shown below. Figure 36 and Figure 37 The surface type, the radius of curvature Y, the thickness, the refractive index, the Abbe number, the refractive mode, and the thickness in the macro state of each lens, light folding element and filter 3 of the camera module 30 shown in Table 8a, Table 8b, and Table 8c are shown below. Among them, the thickness includes the thickness of the structure itself and the spacing between the structures, and 1E+18 (scientific notation) means infinity. Table 8b, Table 8c are shown below. Figure 36 and Figure 37 The aspheric coefficients of each lens of the optical lens 1 of the camera module 30 in one possible embodiment are shown in Table 8b and Table 8c.

[0649] Among them, the odd polynomial surface is one of the aspheric surfaces. Among them, the blank in the "refraction mode" column can be "refraction" respectively. The data of the lens behind the prism is measured by turning the light path.

[0650] Table 8a

[0651]

[0652]

[0653] Table 8b

[0654]

[0655]

[0656] Table 8c

[0657]

[0658]

[0659] The aspheric surfaces in the optical lens 1 in Table 8a, Table 8b and Table 8c can be defined by, but not limited to, the following aspheric curve equation:

[0660]

[0661] Wherein, z is the relative distance of the point on the aspherical surface with a distance r from the optical axis to the tangent plane at the intersection point on the optical axis of the aspherical surface; r is the vertical distance of the point on the aspherical curve from the optical axis; c is the curvature; k is the conic coefficient; ai is the i-th order aspherical coefficient, which can be referred to Table 8b. Wherein, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7 and the eighth lens L8 are aspherical surfaces.

[0662] Please refer to Table 8d and Table 8e, Table 8d is Figure 36 and Figure 37 the basic parameters of the camera module 30 shown in Table 8d, and Table 8e is the relationship between the parameters in Table 8d.

[0663] In Table 8d, IMH is the image height of the optical lens 1, EPD is the entrance pupil diameter of the optical lens 1, EFL is the focal length of the optical lens 1, F1 is the focal length of the first optical element G1, fl is the focal length of the second lens group G22, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 in the direction of the optical axis, ttl is the optical length, ttl1 is the total optical length, d is the maximum focusing stroke of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. Wherein, the values of EFL, F1, fl, fn and fm are effective values, and the unit is millimeter.

[0664] Table 8d

[0665] IMH (mm) 13.00 dm (mm) 4.81 EPD (mm) 11.63 ttl (mm) 31.81 EFL (mm) 27.70 ttl1 (mm) 30.04 F1 (mm) 62.10 d (mm) 5.60 fl (mm) 31.31 L (mm) 120.00 fn (mm) -14.85 fa (mm) 24.10 fm (mm) 26.26 fb (mm) -29.30

[0666] Table 8e

[0667]

[0668]

[0669] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.1. And the ratio F1 / EFL of the focal length F1 of the first optical element G1 to the focal length EFL of the optical lens 1 is 2.24. At this time, the optical power of the image side surface and the object side surface of the first optical element G1 is fully utilized, and the first optical element G1 has appropriate optical power, the ratio F1 / EFL is small, which improves the compactness of the optical lens 1, is beneficial to the miniaturization of the optical lens 1, maximizes the performance of the first optical element G1, and makes the optical lens 1 have stronger anti-shake shooting capability and higher compactness.

[0670] In some embodiments, the ratio of the focal length fm of the first lens group G21 to the focal length EFL of the optical lens 1 is 0.95 (fm / EFL). In this case, the focal length fm of the first lens group G21 is appropriate, and the imaging effect of the optical lens 1 at the telephoto end and the macro end is good.

[0671] In some embodiments, the ratio of the thickness dm of the first lens group G21 in the axial direction to the optical length TTL of the optical lens 1 is 0.17 (dm / TTL). In this case, the thickness of the first lens group G21 is thin, which is beneficial to the miniaturization of the optical lens 1.

[0672] In some embodiments, the ratio of the total optical length TTL1 to the image height IMH of the optical lens 1 is 2.31 (TTL1 / IMH). In this case, the optical lens 1 has a larger image height and a smaller length size.

[0673] In some embodiments, the ratio of the total optical length TTL1 to the entrance pupil diameter EPD of the optical lens 1 is 2.58 (TTL1 / EPD). In this case, the optical lens 1 has a smaller length size and a larger light amount.

[0674] In some embodiments, the ratio of the total optical length TTL1 to the focal length EFL of the optical lens 1 is 1.08 (TTL1 / EFL). In this case, the optical lens 1 makes full use of the length space and has high compactness.

[0675] In some embodiments, the ratio of the maximum focusing stroke d of the first lens group G21 to the focal length EFL of the optical lens 1 is 0.2 (d / EFL).

[0676] In some embodiments, the ratio of the focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 is 0.87 (fa / EFL). In this case, the optical lens 1 has a stronger anti-shake capability and a smaller size.

[0677] In some embodiments, the ratio of the focal length fb of the second lens L2 to the focal length EFL of the optical lens 1 is -1.06 (fb / EFL). In this case, the optical lens 1 has a stronger anti-shake shooting capability.

[0678] In some embodiments, the ratio of the focal length fa of the first lens L1 to the focal length fb of the second lens is -0.822 (fa / fb). In this case, the first optical element G1 has a stronger anti-shake capability when anti-shaking, and the optical lens 1 has smaller aberration, i.e., the optical lens 1 has a stronger anti-shake shooting capability.

[0679] Please refer to Figure 38 and Figure 39 , Figure 38 is Figure 36 the axial chromatic aberration diagram of the camera module 30 shown inFigure 39 is Figure 36 the distortion map of camera module 30 shown in FIG. 8.

[0680] Figure 38 The axial chromatic aberration curve shown in FIG. 9 includes the spherical aberration curves corresponding to different wave bands of the system (the curves shown include 650 nm, 610 nm, 555 nm, 510 nm, 470 nm, and 435 nm); the physical meaning is that, for the light of the corresponding wavelength emitted at 0-degree field of view, the deviation from the ideal image point after passing through the optical system; the abscissa is the deviation value in the direction of the optical axis, and the ordinate is the normalized coordinate at the pupil. Figure 38 The values shown in FIG. 9 are small, and the on-axis aberration (spherical aberration, chromatic aberration, etc.) of optical lens 1 is well corrected.

[0681] Figure 39 The distortion map is used to represent the relative deviation of the beam convergence point (actual image height) from the ideal image height at different fields of view. Figure 39 In the distortion map shown in FIG. 8, the relative deviation is within 1%, which can ensure that the picture is not obviously distorted.

[0682] Embodiment Nine

[0683] Please refer to Figure 40 and Figure 41 , Figure 40 is Figure 5 the structural schematic diagram of camera module 30 in a long-focus end in embodiment nine, Figure 41 is Figure 5 the structural schematic diagram of camera module 30 in a macro end in embodiment nine.

[0684] In some embodiments, camera module 30 can include optical lens 1, photosensitive element 2, and optical filter 3, and the light passes through optical lens 1, optical filter 3, and photosensitive element 2 in sequence to form an image. Optical lens 1 includes first optical element G1 and second optical element G2, and second optical element G2 is located on the image side of first optical element G1.

[0685] First optical element G1 includes front lens group G11, light path folding element G12, and rear lens group G13.

[0686] For example, front lens group G11 can include one lens, i.e., first lens L1. Light path folding element G12 can be a mirror, and light path folding element G12 is used to change the optical axis from the first direction to the second direction. Rear lens group G13 can include one lens, i.e., second lens L2.

[0687] Exemplarily, the light path folding element G12 is a mirror, and thus the first lens L1 and the second lens L2 can be fixedly connected to the light path folding element G12 by means of adhesion, or the first lens L1, the light path folding element G12 and the second lens L2 can be formed into an integral component by means of fixed connection.

[0688] Exemplarily, the first lens L1 has positive refractive power, and the second lens L2 has negative refractive power. The object side surface of the first lens L1 is convex, and the image side surface of the second lens L2 is concave.

[0689] The second optical element G2 includes a first lens group G21, a second lens group G22 and a third lens group G23. The second lens group G22, the first lens group G21 and the third lens group G23 are arranged in sequence from the object side to the image side.

[0690] Exemplarily, the second lens group G22 includes one lens, i.e., the third lens L3. The second lens group G22 is a fixed lens group.

[0691] Exemplarily, the first lens group G21 includes three lenses, i.e., the fourth lens L4, the fifth lens L5 and the sixth lens L6 arranged in sequence from the object side to the image side. The first lens group G21 is a movable lens group, and the first lens group G21 can move along the optical axis thereof.

[0692] Exemplarily, the third lens group G23 includes two lenses, i.e., the seventh lens L7 and the eighth lens L8 arranged in sequence from the object side to the image side. The third lens group G23 is a fixed lens group.

[0693] In this embodiment, the first lens L1, the light path folding element G12 and the second lens L2 are relatively fixed, and the three can jointly rotate to realize the anti-shake of the optical lens 1. Thus, through cooperation of the first lens L1, the light path folding element G12 and the second lens L2, the optical lens 1 has strong anti-shake capability, good image quality and small size. Moreover, the first lens group G21 realizes focusing of the optical lens 1 by moving.

[0694] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the second lens group G22, and there is no need to additionally provide an element for folding the light path of the photosensitive element 2, which is beneficial to providing more setting space for other optical elements, and thus is beneficial to improving the compactness of the camera module 30 and facilitating miniaturization of the camera module 30.

[0695] In some embodiments, during the process of changing the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 is fixed, the first lens group G21 moves along the second direction towards the direction close to the first optical element G1, and the positions of the second lens group G22 and the third lens group G23 are fixed. That is, the distance between the first lens group G21 and the first optical element G1 is reduced, so that the object is imaged on the imaging surface, and the optical lens 1 can image the object at a closer distance.

[0696] Table 9a is shown in Table 9a Figure 40 and Figure 41 the surface type, the radius of curvature Y, the thickness, the refractive index, the Abbe number, the refractive mode of each lens, light folding element and filter 3 of the camera module 30 shown in Figure 40 and Figure 41 the aspherical coefficients of each lens of the optical lens 1 of the camera module 30 shown in Table 9b, Table 9c is a possible embodiment.

[0697] wherein the odd polynomial surface is a kind of aspherical surface. Wherein the blank in the "refraction mode" column can be "refraction" respectively. The data of the lens behind the prism is measured by the light path conversion.

[0698] Table 9a

[0699]

[0700]

[0701] Table 9b

[0702]

[0703]

[0704] Table 9c

[0705]

[0706]

[0707] The aspherical surface in the optical lens 1 in Table 9a, Table 9b and Table 9c can be defined by the following aspherical curve equation, but not limited to:

[0708]

[0709] Wherein, z is the relative distance of the point on the aspherical surface with a distance r from the optical axis to the tangent plane at the intersection point on the optical axis of the aspherical surface; r is the vertical distance of the point on the aspherical curve from the optical axis; c is the curvature; k is the conic coefficient; ai is the i-th order aspherical coefficient, which can be referred to Table 9b. Wherein, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7 and the eighth lens L8 are aspherical surfaces.

[0710] Please refer to Table 9d and Table 9e, Table 9d is Figure 40 and Figure 41 the basic parameters of the camera module 30 shown in Table 9d, and Table 9e is the relationship between the parameters in Table 9d.

[0711] In Table 9d, IMH is the image height of the optical lens 1, EPD is the entrance pupil diameter of the optical lens 1, EFL is the focal length of the optical lens 1, F1 is the focal length of the first optical element G1, fl is the focal length of the second lens group G22, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 in the direction of the optical axis, ttl is the optical length, ttl 1 is the total optical length, d is the maximum focusing stroke of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. Wherein, the values of EFL, F1, fl, fn and fm are effective values, and the unit is millimeter.

[0712] Table 9d

[0713] IMH (mm) 13.00 dm (mm) 5.23 EPD (mm) 11.50 ttl (mm) 32.82 EFL (mm) 27.59 ttl1 (mm) 31.00 F1 (mm) -200.00 d (mm) 2.91 fl (mm) 20.45 L (mm) 120.00 fn (mm) 4.89 fa (mm) 27.34 fm (mm) 15.35 fb (mm) -15.43

[0714] Table 9e

[0715]

[0716]

[0717] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.16. And the ratio F1 / EFL of the focal length F1 of the first optical element G1 to the focal length EFL of the optical lens 1 is -7.25. At this time, the optical power of the image side surface and the object side surface of the first optical element G1 is fully utilized, and the first optical element G1 has appropriate optical power, the ratio F1 / EFL is small, which improves the compactness of the optical lens 1, is beneficial to the miniaturization of the optical lens 1, maximizes the performance of the first optical element G1, and makes the optical lens 1 have stronger anti-shake shooting capability and higher compactness.

[0718] In some embodiments, the ratio of the focal length fm of the first lens group G21 to the focal length EFL of the optical lens 1 is 0.56 (fm / EFL). In this case, the focal length fm of the first lens group G21 is appropriate, and the imaging effect of the optical lens 1 at the long-focus end and the macro end is good.

[0719] In some embodiments, the ratio of the thickness dm of the first lens group G21 in the axial direction to the optical length TTL of the optical lens 1 is 0.19 (dm / TTL). In this case, the thickness of the first lens group G21 is thin, which is beneficial to the miniaturization of the optical lens 1.

[0720] In some embodiments, the ratio of the total optical length TTL1 to the image height IMH of the optical lens 1 is 2.38 (TTL1 / IMH). In this case, the optical lens 1 has a larger image height and a smaller length size.

[0721] In some embodiments, the ratio of the total optical length TTL1 to the entrance pupil diameter EPD of the optical lens 1 is 2.7 (TTL1 / EPD). In this case, the optical lens 1 has a smaller length size and a larger light amount.

[0722] In some embodiments, the ratio of the total optical length TTL1 to the focal length EFL of the optical lens 1 is 1.12 (TTL1 / EFL). In this case, the optical lens 1 makes full use of the length space and has high compactness.

[0723] In some embodiments, the ratio of the maximum focusing stroke d of the first lens group G21 to the focal length EFL of the optical lens 1 is 0.11 (d / EFL).

[0724] In some embodiments, the ratio of the focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 is 0.99 (fa / EFL). In this case, the optical lens 1 has a stronger anti-shake capability and a smaller size.

[0725] In some embodiments, the ratio of the focal length fb of the second lens L2 to the focal length EFL of the optical lens 1 is -0.56 (fb / EFL). In this case, the optical lens 1 has a stronger anti-shake shooting capability.

[0726] In some embodiments, the ratio of the focal length fa of the first lens L1 to the focal length fb of the second lens is -1.772 (fa / fb). In this case, the first optical element G1 has a stronger anti-shake capability when anti-shaking, and the optical lens 1 has smaller aberration, i.e., the optical lens 1 has a stronger anti-shake shooting capability.

[0727] Please refer to Figure 42 and Figure 43 , Figure 42 are Figure 40 the axial chromatic aberration diagram of the camera module 30 shown in FIG.Figure 43 is Figure 40 the distortion map of camera module 30 shown in FIG. 1.

[0728] Figure 42 The axial chromatic aberration curve shown in FIG. 2 includes the spherical aberration curves corresponding to different wave bands of the system (the curves shown include 650 nm, 610 nm, 555 nm, 510 nm, 470 nm, and 435 nm); the physical meaning is that, for the light of the corresponding wavelength emitted at 0-degree field of view, the deviation from the ideal image point after passing through the optical system; the abscissa is the deviation value in the direction of the optical axis, and the ordinate is the normalized coordinate at the pupil. Figure 42 The values shown in FIG. 2 are small, and the on-axis aberration (spherical aberration, chromatic aberration, etc.) of optical lens 1 is well corrected.

[0729] Figure 43 The distortion map is used to represent the relative deviation of the beam convergence point (actual image height) from the ideal image height at different fields of view. Figure 43 In the distortion map shown in FIG. 3, the relative deviation is within 2.5%, which can ensure that the picture is not obviously distorted.

[0730] Embodiment Ten

[0731] See Figure 44 and Figure 45 , Figure 44 is Figure 5 the structural schematic diagram of camera module 30 in a long-focus end in embodiment ten, Figure 45 is Figure 5 the structural schematic diagram of camera module 30 in a macro end in embodiment ten.

[0732] In some embodiments, camera module 30 can include optical lens 1, photosensitive element 2, and optical filter 3, and the light passes through optical lens 1, optical filter 3, and photosensitive element 2 in sequence to form an image. Optical lens 1 includes first optical element G1 and second optical element G2, and second optical element G2 is located on the image side of first optical element G1.

[0733] First optical element G1 includes front lens group G11, light path folding element G12, and rear lens group G13.

[0734] For example, front lens group G11 can include one lens, i.e., first lens L1. Light path folding element G12 can be a prism, and light path folding element G12 is used to change the optical axis from the first direction to the second direction. Rear lens group G13 can include one lens, i.e., second lens L2.

[0735] Exemplarily, the first lens L1, the light path folding element G12 and the second lens L2 have different refractive indexes, and thus the first lens L1 and the second lens L2 can be fixedly connected to the light path folding element G12 by means of adhesion, or the first lens L1, the light path folding element G12 and the second lens L2 can be formed into an integral component by means of fixed connection.

[0736] Exemplarily, the first lens L1 has positive refractive power, and the second lens L2 has negative refractive power. The object side surface of the first lens L1 is a convex surface, and the image side surface of the second lens L2 is a concave surface.

[0737] The second optical element G2 includes a first lens group G21 and a third lens group G23. The first lens group G21 and the third lens group G23 are arranged in sequence from the object side to the image side.

[0738] Exemplarily, the first lens group G21 includes four lenses arranged in sequence from the object side to the image side, i.e., a third lens L3, a fourth lens L4, a fifth lens L5 and a sixth lens L6. The first lens group G21 is a movable lens group, and the first lens group G21 can move along the optical axis thereof.

[0739] Exemplarily, the third lens group G23 includes two lenses arranged in sequence from the object side to the image side, i.e., a seventh lens L7 and an eighth lens L8. The third lens group G23 is a fixed lens group.

[0740] In this embodiment, the first lens L1, the light path folding element G12 and the second lens L2 are relatively fixed, and the three can jointly rotate to realize the anti-shake of the optical lens 1. Thus, through cooperation of the first lens L1, the light path folding element G12 and the second lens L2, the optical lens 1 has strong anti-shake capability, good image quality and small size. Moreover, the first lens group G21 realizes focusing of the optical lens 1 by moving.

[0741] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the second lens group G22, and there is no need to additionally provide an element for folding the light path of the photosensitive element 2, which is beneficial to providing more setting space for other optical elements, and thus is beneficial to improving the compactness of the camera module 30 and facilitating miniaturization of the camera module 30.

[0742] In some embodiments, during the process of changing the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 is fixed, the first lens group G21 moves along the second direction towards the direction close to the first optical element G1, and the positions of the second lens group G22 and the third lens group G23 are fixed. That is, the distance between the first lens group G21 and the first optical element G1 decreases, so that the object is imaged on the imaging surface, and the optical lens 1 can image the object at a closer distance.

[0743] Table 10a is shown below. Figure 44 and Figure 45 The surface type, the radius of curvature Y, the thickness, the refractive index, the Abbe number, the refractive mode and the thickness in the macro state of each lens, light folding element and filter 3 of the camera module 30 shown in Figure 44 and Figure 45 The aspherical coefficients of each lens in one possible embodiment of the optical lens 1 of the camera module 30 shown in

[0744] The odd polynomial surface is one of the aspherical surfaces. The blank in the "refractive mode" column can be "refractive" respectively. The data of the lens behind the prism is measured by the light path conversion.

[0745] Table 10a

[0746]

[0747]

[0748] Table 10b

[0749] Surface No. Y radius k 2nd order coefficient 4th order coefficient 6th order coefficient 8th order coefficient 10th order coefficient 12th order coefficient 1 1.34E+01 0.00E+00 0.00E+00 -1.93E-05 -1.06E-06 5.76E-07 -1.80E-07 3.37E-08 2 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 3 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 4 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 5 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 6 -2.10E+01 2.19E-11 0.00E+00 -7.44E-06 4.24E-06 -6.60E-06 2.04E-06 -3.40E-07 7 -1.21E+01 -6.35E-10 0.00E+00 1.63E-05 -7.96E-05 6.92E-05 -4.18E-05 1.65E-05 8 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 9 -5.79E+00 0.00E+00 0.00E+00 5.69E-04 2.10E-04 -5.34E-04 4.66E-04 -2.52E-04 10 -6.73E+00 0.00E+00 0.00E+00 4.54E-03 -3.93E-05 -1.23E-03 1.27E-03 -7.54E-04 11 -1.34E+01 0.00E+00 0.00E+00 5.99E-03 8.70E-04 -2.29E-03 2.04E-03 -1.18E-03 12 -7.94E+00 0.00E+00 0.00E+00 1.96E-03 5.88E-03 -4.48E-03 1.84E-03 -4.92E-04 13 -4.84E+00 0.00E+00 0.00E+00 3.42E-03 5.26E-03 -2.61E-03 6.17E-05 4.98E-04 14 -5.79E+00 0.00E+00 0.00E+00 6.40E-03 -1.60E-03 1.73E-03 -1.28E-03 6.04E-04 15 -9.30E+01 0.00E+00 0.00E+00 2.13E-03 6.13E-04 -8.72E-04 8.18E-04 -4.89E-04 16 1.56E+01 0.00E+00 0.00E+00 1.01E-03 3.00E-04 -3.02E-04 2.46E-04 -1.28E-04 17 1.61E+01 0.00E+00 0.00E+00 -1.68E-03 1.63E-04 -1.55E-04 6.84E-05 -1.79E-05 18 1.37E+01 0.00E+00 0.00E+00 -6.35E-04 3.37E-04 -4.93E-04 3.19E-04 -1.36E-04 19 2.80E+01 0.00E+00 0.00E+00 8.51E-03 -3.18E-04 -1.68E-04 8.07E-05 -1.57E-05 20 -1.31E+01 0.00E+00 0.00E+00 7.57E-03 -4.89E-04 -3.76E-05 2.88E-05 -7.05E-06 21 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 22 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

[0750] Table 10c

[0751]

[0752]

[0753]

[0754] The aspherical surface in the optical lens 1 in Table 10a, Table 10b and Table 10c can be defined by, but not limited to, the following aspherical curve equation:

[0755]

[0756] Wherein z is the relative distance of the point on the aspherical surface with a distance r from the optical axis to the tangent plane of the intersection point on the optical axis; r is the vertical distance of the point on the aspherical curve to the optical axis; c is the curvature; k is the conic coefficient; ai is the i-th order aspherical coefficient, which can be referred to Table 10b. The first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7 and the eighth lens L8 are all aspherical surfaces.

[0757] Please refer to Table 10d and Table 10e, Table 10d is shown below. Figure 44and Figure 45 The basic parameters of the camera module 30 are shown in Table 10e, and Table 10d is a relationship between the parameters in Table 10d.

[0758] In Table 10d, IMH is the image height of the optical lens 1, EPD is the entrance pupil diameter of the optical lens 1, EFL is the focal length of the optical lens 1, F1 is the focal length of the first optical element G1, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 in the direction of the optical axis, ttl is the optical length, ttl 1 is the total optical length, d is the maximum focusing stroke of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. Among them, the values of EFL, F1, fn, and fm are all effective values, and the unit is millimeter.

[0759] Table 10d

[0760] IMH (mm) 13.00 dm (mm) 4.72 EPD (mm) 11.40 ttl (mm) 32.14 EFL (mm) 27.07 ttl1 (mm) 30.50 F1 (mm) 44.40 d (mm) 3.18 fn (mm) -18.53 L (mm) 150.00 fm (mm) 21.25 fa (mm) 25.92 fb (mm) -43.57

[0761] Table 10e

[0762]

[0763] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.2. And the ratio F1 / EFL of the focal length F1 of the first optical element G1 to the focal length EFL of the optical lens 1 is 1.64. At this time, the optical power of the image side surface and the object side surface of the first optical element G1 is fully utilized, and the first optical element G1 has appropriate optical power, the ratio F1 / EFL is small, which improves the compactness of the optical lens 1, is beneficial to the miniaturization of the optical lens 1, maximizes the performance of the first optical element G1, and makes the optical lens 1 have stronger anti-shake shooting capability and higher compactness.

[0764] In some embodiments, the ratio fm / EFL of the focal length fm of the first lens group G21 to the focal length EFL of the optical lens 1 is 0.78. At this time, the focal length fm of the first lens group G21 is appropriate, and the imaging effect of the optical lens 1 at the telephoto end and the macro end is good.

[0765] In some embodiments, the ratio dm / TTL of the thickness dm of the first lens group G21 in the direction of the optical axis to the optical length of the optical lens 1 is 0.17. At this time, the thickness of the first lens group G21 is thin, which is beneficial to the miniaturization of the optical lens 1.

[0766] In some embodiments, a ratio of the total optical length TTL1 to the image height IMH of the optical lens 1, TTL1 / IMH, is 2.35. In this case, the optical lens 1 has a large image height and a small length size.

[0767] In some embodiments, a ratio of the total optical length TTL1 to the entrance pupil diameter EPD of the optical lens 1, TTL1 / EPD, is 2.68. In this case, the optical lens 1 has a small length size and a large light intake.

[0768] In some embodiments, a ratio of the total optical length TTL1 to the focal length EFL of the optical lens 1, TTL1 / EFL, is 1.13. In this case, the optical lens 1 makes full use of the length space and has high compactness.

[0769] In some embodiments, a ratio of the maximum focusing stroke d of the first lens group G21 to the focal length EFL of the optical lens 1, d / EFL, is 0.12.

[0770] In some embodiments, a ratio of the focal length fa of the first lens L1 to the focal length EFL of the optical lens 1, fa / EFL, is 0.96. In this case, the optical lens 1 has a strong anti-shake capability and a small size.

[0771] In some embodiments, a ratio of the focal length fb of the second lens L2 to the focal length EFL of the optical lens 1, fb / EFL, is -1.61. In this case, the optical lens 1 has a strong anti-shake shooting capability.

[0772] In some embodiments, a ratio of the focal length fa of the first lens L1 to the focal length fb of the second lens, fa / fb, is -0.595. In this case, the first optical element G1 has a strong anti-shake capability when anti-shaking, and the optical lens 1 has a small aberration, i.e., a strong anti-shake shooting capability.

[0773] Please refer to Figure 46 and Figure 47 , Figure 46 are Figure 44 axial chromatic aberration diagrams of the camera module 30 shown in FIG. 6, Figure 47 are Figure 44 distortion diagrams of the camera module 30 shown in FIG. 6.

[0774] Figure 46 The axial chromatic aberration curve diagram shown in FIG. 6 includes a spherical aberration curve corresponding to different wave bands of the system (the diagrams shown include 650 nm, 610 nm, 555 nm, 510 nm, 470 nm, and 435 nm); the physical meaning is that, for the light of the corresponding wavelength emitted at 0 degree field of view, the deviation from the ideal image point after passing through the optical system; the abscissa is the deviation value in the direction of the optical axis, and the ordinate is the normalized coordinate at the pupil. Figure 46The values in the table are relatively small, and the axial aberration (spherical aberration, chromatic aberration, etc.) of the optical lens 1 is well corrected.

[0775] Figure 47 The distortion map is used to characterize the relative deviation of the beam convergence point (actual image height) from the ideal image height in different fields of view. Figure 47 In the distortion map shown, the relative deviation is within 1%, which can ensure that the picture does not have obvious distortion.

[0776] Embodiment Eleven

[0777] Please refer to Figure 48 and Figure 49 , Figure 48 is Figure 5 The structural schematic diagram of the camera module 30 in the embodiment eleven is shown in FIG. 11. Figure 49 is Figure 48 The structural schematic diagram of the camera module 30 in some embodiments is shown in FIG. 12.

[0778] In some embodiments, the camera module 30 can include an optical lens 1, a photosensitive element 2, and a filter 3. Light passes through the optical lens 1, the filter 3, and the photosensitive element 2 in sequence to form an image. The optical lens 1 includes a first optical element G1 and a second optical element G2. The second optical element G2 is located on the image side of the first optical element G1.

[0779] The first optical element G1 includes a front lens group G11, a light path folding element G12, and a rear lens group G13.

[0780] For example, the front lens group G11 can include one lens, i.e., a first lens L1. The light path folding element G12 can be a prism. The light path folding element G12 is used to change the optical axis from a first direction to a second direction. The rear lens group G13 can include one lens, i.e., a second lens L2.

[0781] For example, the refractive indices of the first lens L1, the light path folding element G12, and the second lens L2 are different. Therefore, the first lens L1 and the second lens L2 can be fixedly connected to the light path folding element G12 by adhesion. The first lens L1, the light path folding element G12, and the second lens L2 can also be formed into an integral component by a fixed connection.

[0782] For example, the first lens L1 has a positive refractive power, and the second lens L2 has a negative refractive power. The object side surface of the first lens L1 is convex, and the image side surface of the second lens L2 is concave.

[0783] The second optical element G2 includes a first lens group G21 and a third lens group G23. The first lens group G21 and the third lens group G23 are arranged in sequence from the object side to the image side.

[0784] Exemplarily, the first lens group G21 includes four lenses, which are the third lens L3, the fourth lens L4, the fifth lens L5 and the sixth lens L6 arranged in order from the object side to the image side. The first lens group G21 is a movable lens group, and the first lens group G21 can move along the optical axis direction thereof.

[0785] Exemplarily, the third lens group G23 includes three lenses, which are the seventh lens L7, the eighth lens L8 and the ninth lens L9 arranged in order from the object side to the image side. The third lens group G23 is a fixed lens group. At this time, the third lens group G23 is the lens group closest to the image side of the second optical element G2.

[0786] In the embodiment, the first lens L1, the light path folding element G12 and the second lens L2 are relatively fixed, and the three can jointly rotate to realize the anti-shake of the optical lens 1. Therefore, through the cooperation of the first lens L1, the light path folding element G12 and the second lens L2, the optical lens 1 has strong anti-shake ability, better image quality and smaller size. Moreover, the first lens group G21 realizes the focusing of the optical lens 1 by moving.

[0787] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the third lens group G23, and there is no need to additionally provide an element for folding the light path for the photosensitive element 2, which is beneficial to provide more setting space for other optical elements, and thus is beneficial to improve the compactness of the camera module 30 and facilitate the miniaturization of the camera module 30.

[0788] In some embodiments, during the process that the optical lens 1 changes from the telephoto end to the macro end, the position of the first optical element G1 is fixed, the first lens group G21 moves along the second direction towards the direction close to the first optical element G1, and the position of the third lens group G23 is fixed. That is, the distance between the first lens group G21 and the first optical element G1 decreases, so that the object is imaged on the imaging surface, and the optical lens 1 can image the object at a closer distance.

[0789] Please refer to Table 11a, which is the surface type, curvature radius Y, thickness, refractive index, Abbe number, refractive mode and thickness of each lens, light folding element and filter 3 of the camera module 30 shown in Figure 48 and Figure 49 Table 11b and Table 11c are the aspheric coefficients of each lens of the optical lens 1 of the camera module 30 in some embodiments. Figure 48 Figure 49

[0790] ​​Wherein, the odd polynomial surface is a kind of aspheric surface. Wherein, the blank in the "refraction mode" column can be "refraction" respectively. The data of the lens behind the prism is measured by the light path conversion.

[0791] Table 11a

[0792]

[0793]

[0794] Table 11b

[0795] Surface No. Y radius k 2nd order coefficient 4th order coefficient 6th order coefficient 8th order coefficient 10th order coefficient 12th order coefficient Object plane 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1 1.46E+01 0.00E+00 0.00E+00 -1.58E-05 3.29E-06 -5.54E-07 5.51E-08 -3.37E-09 2 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 3 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 4 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 5 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 6 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 7 -2.62E+01 4.82E-02 0.00E+00 -4.20E-05 -1.40E-05 4.11E-06 -6.64E-07 6.58E-08 8 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 9 -7.20E+00 0.00E+00 0.00E+00 -6.57E-04 4.58E-05 -1.12E-04 5.32E-05 -1.41E-05 10 -9.62E+00 0.00E+00 0.00E+00 1.73E-02 -2.53E-02 2.17E-02 -1.17E-02 4.36E-03 11 -6.91E+00 0.00E+00 0.00E+00 1.92E-02 -2.65E-02 2.31E-02 -1.24E-02 4.53E-03 12 -3.85E+00 0.00E+00 0.00E+00 2.83E-02 -2.77E-02 2.07E-02 -9.76E-03 3.11E-03 13 -3.51E+00 0.00E+00 0.00E+00 3.70E-02 -2.46E-02 1.35E-02 -4.79E-03 1.06E-03 14 -5.56E+00 0.00E+00 0.00E+00 1.54E-02 -3.06E-03 -1.49E-03 1.78E-03 -9.48E-04 15 3.73E+01 0.00E+00 0.00E+00 5.55E-03 2.06E-03 -3.10E-03 2.12E-03 -9.94E-04 16 1.07E+01 0.00E+00 0.00E+00 2.36E-03 1.86E-03 -2.17E-03 1.41E-03 -6.41E-04 17 1.50E+01 0.00E+00 0.00E+00 -2.74E-03 1.99E-03 -1.71E-03 8.69E-04 -3.05E-04 18 1.20E+01 0.00E+00 0.00E+00 -1.60E-03 1.20E-03 -7.36E-04 1.36E-04 5.06E-05 19 1.60E+01 1.55E+01 0.00E+00 -3.40E-03 3.59E-03 -1.98E-03 7.33E-04 -1.68E-04 20 3.34E+01 6.05E+01 0.00E+00 -5.95E-03 3.29E-03 -1.36E-03 4.18E-04 -7.03E-05 21 1.34E+01 0.00E+00 0.00E+00 -2.03E-03 2.14E-03 -1.15E-03 6.11E-04 -2.44E-04 22 -1.54E+02 0.00E+00 0.00E+00 4.90E-04 9.28E-04 -3.42E-04 1.11E-04 -2.71E-05 23 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 24 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Image plane 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

[0796] Table 11c

[0797]

[0798]

[0799] The aspheric surface in the optical lens 1 in Table 11a, Table 11b and Table 11c can be defined by, but not limited to, the following aspheric curve equation:

[0800]

[0801] Wherein, z is the relative distance between the point on the aspheric surface with a distance r from the optical axis and the intersection tangent plane of the aspheric surface on the optical axis; r is the vertical distance between the point on the aspheric curve and the optical axis; c is the curvature; k is the conic coefficient; ai is the i-th order aspheric coefficient, which can be referred to Table 11b. Wherein, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7 and the eighth lens L8 are all aspheric surfaces.

[0802] Please refer to Table 11d and Table 11e, Table 11d is Figure 48 and Figure 49 the basic parameters of the camera module 30 shown in Table 11e is the relationship between the parameters in Table 11d.

[0803] In Table 11d, IMH is the image height of the optical lens 1, EPD is the entrance pupil diameter of the optical lens 1, EFL is the focal length of the optical lens 1, F1 is the focal length of the first optical element G1, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 in the optical axis direction, ttl is the optical length, ttl 1 is the total optical length, d is the maximum focusing stroke of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. Wherein, the values of EFL, F1, fn and fm are all effective values, and the unit is millimeter.

[0804] Table 11d

[0805] IMH (mm) 13.34 dm (mm) 5.097 EPD (mm) 11.8 ttl (mm) 32.61 EFL (mm) 26 ttl1 (mm) 30.5 F1 (mm) 62.7 d (mm) 2.8226 fn (mm) -19.05 L (mm) 150 fm (mm) 19.05 fa (mm) 42.83 fb (mm) -37.8

[0806] Table 11e

[0807]

[0808] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.162. And the ratio of the focal length of the first optical element G1 F1 to the focal length of the optical lens 1 EFL is F1 / EFL=2.412. At this time, the optical power of the image side surface and the object side surface of the first optical element G1 is fully utilized, and the first optical element G1 has appropriate optical power, the ratio of F1 / EFL is small, the compactness of the optical lens 1 is improved, which is beneficial to the miniaturization of the optical lens 1, the performance of the first optical element G1 is maximized, and the optical lens 1 has strong anti-shake shooting capability and high compactness.

[0809] In some embodiments, the ratio of the focal length fm of the first lens group G21 to the focal length EFL of the optical lens 1 is fm / EFL=0.733. At this time, the focal length fm of the first lens group G21 is appropriate, and the imaging effect of the optical lens 1 at the long focal end and the macro end is good.

[0810] In some embodiments, the ratio of the thickness dm of the first lens group G21 on the axis in the optical axis direction to the optical length TTL of the optical lens 1 is dm / TTL=0.196. At this time, the thickness of the first lens group G21 is thin, which is beneficial to the miniaturization of the optical lens 1.

[0811] In some embodiments, the ratio of the total optical length TTL1 to the image height IMH of the optical lens 1 is TTL1 / IMH=2.286. At this time, the optical lens 1 has a larger image height and a smaller length size.

[0812] In some embodiments, the ratio of the total optical length TTL1 to the entrance pupil diameter EPD of the optical lens 1 is TTL1 / EPD=2.585. At this time, the optical lens 1 has a smaller length size and a larger light amount.

[0813] In some embodiments, the ratio of the total optical length TTL1 of the optical lens 1 to the focal length EFL of the optical lens 1 is TTL1 / EFL=1.173. At this time, the optical lens 1 fully utilizes the length space and has high compactness.

[0814] In some embodiments, the ratio of the maximum focusing stroke d of the first lens group G21 to the focal length EFL of the optical lens 1 is d / EFL=0.109.

[0815] In some embodiments, the ratio of the focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 is fa / EFL=1.647. At this time, the optical lens 1 has strong anti-shake capability and small size.

[0816] In some embodiments, the ratio of the focal length fb of the second lens L2 to the focal length EFL of the optical lens 1 is fb / EFL=-1.45. At this time, the optical lens 1 has strong anti-shake shooting capability.

[0817] In some embodiments, the ratio of the focal length fa of the first lens L1 to the focal length fb of the second lens is fa / fb=-1.13. At this time, the first optical element G1 has strong anti-shake capability when anti-shaking, and the aberration of the optical lens 1 is small, that is, the optical lens 1 has strong anti-shake shooting capability.

[0818] Please refer to Figure 50 and Figure 51 , Figure 50 is Figure 48 the axial chromatic aberration diagram of the camera module 30 shown in FIG. 8, Figure 51 is Figure 48 the distortion diagram of the camera module 30 shown in FIG. 8.

[0819] Figure 50 The axial chromatic aberration curve diagram shown in FIG. 8 includes the spherical aberration curves corresponding to different wave bands of the system (the diagram shown includes 650 nm, 610 nm, 555 nm, 510 nm, 470 nm, and 435 nm); the physical meaning is that the light of the corresponding wavelength emitted at 0-degree field of view deviates from the ideal image point after passing through the optical system; the abscissa is the deviation value in the direction of the optical axis, and the ordinate is the normalized coordinate at the pupil. Figure 50 The values shown in FIG. 8 are small, and the on-axis aberration (spherical aberration, chromatic aberration, etc.) of the optical lens 1 is well corrected.

[0820] Figure 51 The distortion diagram is used to represent the relative deviation amount of the beam convergence point (actual image height) of different fields of view from the ideal image height. Figure 51 In the distortion diagram shown in FIG. 8, the relative deviation amount is within 1.5%, which can ensure that the picture has no obvious deformation.

[0821] Embodiment Twelve

[0822] Please refer to Figure 52 and Figure 53 , Figure 52 is Figure 5 the structural schematic diagram of the camera module 30 in the long-focus end in embodiment twelve,Figure 53 is Figure 52 A structure diagram of the camera module 30 at the macro end in some embodiments.

[0823] In some embodiments, the camera module 30 can include an optical lens 1, a photosensitive element 2, and a filter 3. Light rays pass through the optical lens 1, the filter 3, and the photosensitive element 2 in sequence to form an image. The optical lens 1 includes a first optical element G1 and a second optical element G2, and the second optical element G2 is located on the image side of the first optical element G1.

[0824] The first optical element G1 includes a front lens group G11, a light path folding element G12, and a rear lens group G13.

[0825] For example, the front lens group G11 can include one lens, i.e., a first lens L1. The light path folding element G12 can be a prism, and the light path folding element G12 is used to change the optical axis from a first direction to a second direction.

[0826] The light exit surface of the rear lens group G13 can be formed on the light path folding element G12. At this time, the rear lens group G13 and the light path folding element G12 are integrally formed. The refractive index of the rear lens group G13 is the same as the material and refractive index of the light path folding element G12.

[0827] For example, the refractive indices of the first lens L1, the light path folding element G12, and the third lens L3 are different, so the first lens L1 can be fixedly connected to the light path folding element G12 by adhesion, or the first lens L1 and the light path folding element G12 can form an integral component by a fixed connection.

[0828] For example, the first lens L1 has a positive focal power, and the second lens L2 has a negative focal power. The object side surface of the first lens L1 is a convex surface, and the image side surface of the second lens L2 is a concave surface.

[0829] The second optical element G2 includes a first lens group G21 and a third lens group G23. The first lens group G21 and the third lens group G23 are arranged in sequence from the object side to the image side.

[0830] For example, the first lens group G21 includes four lenses arranged in sequence from the object side to the image side, i.e., the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5. The first lens group G21 is a movable lens group, and the first lens group G21 can move along its optical axis.

[0831] For example, the third lens group G23 includes three lenses arranged in sequence from the object side to the image side, i.e., the sixth lens L6 and the seventh lens L7. The third lens group G23 is a fixed lens group.

[0832] In this embodiment, the first lens L1, the light path folding element G12 and the second lens L2 are relatively fixed, and the three can be collectively rotated to realize the anti-shake of the optical lens 1. Therefore, through the cooperation of the first lens L1, the light path folding element G12 and the second lens L2, the optical lens 1 has strong anti-shake ability, good image quality and small size. In addition, the first lens group G21 realizes the focusing of the optical lens 1 by moving.

[0833] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the third lens group G23, and there is no need to additionally provide an element for folding the light path for the photosensitive element 2, which is beneficial to provide more setting space for other optical elements, and thus is beneficial to improve the compactness of the camera module 30, and is beneficial to the miniaturization of the camera module 30.

[0834] In some embodiments, during the process of changing the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 is fixed, the first lens group G21 moves along the second direction towards the direction close to the first optical element G1, and the position of the third lens group G23 is fixed. That is, the distance between the first lens group G21 and the first optical element G1 decreases, so that the object is imaged on the imaging surface, and the optical lens 1 can image the object at a closer distance.

[0835] Please refer to Table 12a, which is a table showing the surface type, curvature radius Y, thickness, refractive index, Abbe number, refractive mode and thickness in the macro state of each lens, light folding element and filter 3 of the camera module 30 shown in Table 12a. Figure 52 Figure 53 Figure 52 Figure 53

[0836] Among them, the odd polynomial surface is a kind of aspheric surface. Among them, the blank in the “refraction mode” column can be “refraction” respectively. The data of the lens behind the prism is measured by folding the light path.

[0837] Table 12a

[0838]

[0839]

[0840] Table 12b

[0841]

[0842] ​​​​

[0843] Table 12c

[0844]

[0845]

[0846] The aspheres in the optical lens 1 in Table 12a, Table 12b and Table 12c can be defined by, but not limited to, the following aspheric curve equation:

[0847]

[0848] wherein z is the relative distance of a point on the aspheric curve with a vertical distance r from the optical axis to the tangent plane of the aspheric curve at the intersection point of the optical axis; r is the vertical distance of a point on the aspheric curve to the optical axis; c is the curvature; k is the conic coefficient; ai is the i-th order aspheric coefficient, which can be referred to Table 12b. The first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6 and the seventh lens L7 are all aspheres.

[0849] Please refer to Table 12d and Table 12e, Table 12d is the basic parameters of the camera module 30 shown in Figure 52 and Figure 53 Table 12e is the relationship between the parameters in Table 12d.

[0850] In Table 12d, IMH is the image height of the optical lens 1, EPD is the entrance pupil diameter of the optical lens 1, EFL is the focal length of the optical lens 1, F1 is the focal length of the first optical element G1, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 in the direction of the optical axis, ttl is the optical length, ttl 1 is the total optical length, d is the maximum focusing stroke of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. The values of EFL, F1, fn and fm are all effective values, and the unit is millimeter.

[0851] Table 12d

[0852] IMH (mm) 13.34 dm (mm) 6.583 EPD (mm) 11.8 ttl (mm) 32.61 EFL (mm) 26 ttl1 (mm) 30.5 F1 (mm) 52.876 d (mm) 2.9414 fn (mm) -21.36 L (mm) 150 fm (mm) 21.09 fa (mm) 43.3 fb (mm) -47.1

[0853] Table 12e

[0854]

[0855]

[0856] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.245. And the ratio of the focal length of the first optical element G1 F1 to the focal length of the optical lens 1 EFL F1 / EFL is 2.034. At this time, the power of the image side surface and the object side surface of the first optical element G1 is fully utilized, and the first optical element G1 has appropriate power, the ratio of F1 / EFL is small, the compactness of the optical lens 1 is improved, which is beneficial to the miniaturization of the optical lens 1, the performance of the first optical element G1 is maximized, and the optical lens 1 has strong anti-shake shooting capability and high compactness.

[0857] In some embodiments, the ratio of the focal length fm of the first lens group G21 to the focal length EFL of the optical lens 1 fm / EFL is 0.811. At this time, the focal length fm of the first lens group G21 is appropriate, and the imaging effect of the optical lens 1 at the long focal end and the macro end is good.

[0858] In some embodiments, the ratio of the thickness dm of the first lens group G21 on the axis in the optical axis direction to the optical length TTL of the optical lens 1 dm / TTL is 0.253. At this time, the thickness of the first lens group G21 is thin, which is beneficial to the miniaturization of the optical lens 1.

[0859] In some embodiments, the ratio of the total optical length TTL1 to the image height IMH of the optical lens 1 TTL1 / IMH is 2.286. At this time, the optical lens 1 has a large image height and a small length size.

[0860] In some embodiments, the ratio of the total optical length TTL1 to the entrance pupil diameter EPD of the optical lens 1 TTL1 / EPD is 2.585. At this time, the optical lens 1 has a small length size and a large light amount.

[0861] In some embodiments, the ratio of the total optical length TTL1 to the focal length EFL of the optical lens 1 TTL1 / EFL is 1.173. At this time, the optical lens 1 fully utilizes the length space and has high compactness.

[0862] In some embodiments, the ratio of the maximum focusing stroke d of the first lens group G21 to the focal length EFL of the optical lens 1 d / EFL is 0.113.

[0863] In some embodiments, the ratio of the focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 fa / EFL is 1.665. At this time, the optical lens 1 has strong anti-shake capability and small size.

[0864] In some embodiments, the ratio of the focal length fb of the second lens L2 to the focal length EFL of the optical lens 1 is fb / EFL=-1.81. At this time, the optical lens 1 has a strong anti-shake shooting capability.

[0865] In some embodiments, the ratio of the focal length fa of the first lens L1 to the focal length fb of the second lens is fa / fb=-0.92. At this time, the first optical element G1 has a strong anti-shake capability when anti-shaking, and the aberration of the optical lens 1 is small, that is, the optical lens 1 has a strong anti-shake shooting capability.

[0866] Please refer to Figure 54 and Figure 55 , Figure 54 is Figure 52 the axial chromatic aberration diagram of the camera module 30 shown in FIG. 8, Figure 55 is Figure 52 the distortion diagram of the camera module 30 shown in FIG. 9.

[0867] Figure 54 The axial chromatic aberration curve diagram shown in FIG. 10 includes a spherical aberration curve corresponding to different wave bands of the system (the diagram shown includes 650 nm, 610 nm, 555 nm, 510 nm, 470 nm, and 435 nm); the physical meaning is that the light of the corresponding wavelength emitted at 0 degree field of view deviates from the ideal image point after passing through the optical system; the abscissa is the deviation value along the optical axis direction, and the ordinate is the normalized coordinate at the pupil. Figure 54 The values shown in FIG. 10 are small, and the on-axis aberration (spherical aberration, chromatic aberration, etc.) of the optical lens 1 is well corrected.

[0868] Figure 55 The distortion diagram is used to represent the relative deviation amount of the beam convergence point (actual image height) of different fields of view from the ideal image height. Figure 55 In the distortion diagram shown in FIG. 9, the relative deviation amount is within 2.5%, which can ensure that the picture has no obvious deformation.

[0869] Embodiment XIII

[0870] Please refer to Figure 56 and Figure 57 , Figure 56 is Figure 5 the structural schematic diagram of the camera module 30 in the long-focus end in embodiment XIII, Figure 57 is Figure 56 the structural schematic diagram of the camera module 30 in the macro end in some embodiments.

[0871] In some embodiments, the camera module 30 can include an optical lens 1, a photosensitive element 2, and a filter 3, and light rays sequentially pass through the optical lens 1, the filter 3, and the photosensitive element 2 to form an image. The optical lens 1 includes a first optical element G1 and a second optical element G2, and the second optical element G2 is located on the image side of the first optical element G1.

[0872] The first optical element G1 includes a front lens group G11, an optical path folding element G12, and a rear lens group G13.

[0873] For example, the front lens group G11 can include one lens, i.e., a first lens L1. The optical path folding element G12 can be a prism, and the optical path folding element G12 is used to change the optical axis from a first direction to a second direction. The rear lens group G13 can include one lens, i.e., a second lens L2.

[0874] For example, the refractive indices of the first lens L1, the optical path folding element G12, and the second lens L2 are different, so that the first lens L1 and the second lens L2 can be fixedly connected to the optical path folding element G12 by means of adhesion, and the first lens L1, the optical path folding element G12, and the second lens L2 can also be formed into an integral component by means of a fixing member.

[0875] For example, the first lens L1 has a positive refractive power, and the second lens L2 has a negative refractive power. The object side surface of the first lens L1 is a convex surface, and the image side surface of the second lens L2 is a concave surface.

[0876] The second optical element G2 includes a first lens group G21 and a third lens group G23. The first lens group G21 and the third lens group G23 are arranged in sequence from the object side to the image side.

[0877] For example, the first lens group G21 includes four lenses arranged in sequence from the object side to the image side, i.e., a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6. The first lens group G21 is a movable lens group, and the first lens group G21 can move along its optical axis.

[0878] For example, the third lens group G23 includes two lenses arranged in sequence from the object side to the image side, i.e., a seventh lens L7 and an eighth lens L8. The third lens group G23 is a fixed lens group.

[0879] In this embodiment, the first lens L1, the optical path folding element G12, and the second lens L2 are relatively fixed, and the three can rotate together to achieve image stabilization of the optical lens 1. Therefore, through the cooperation of the first lens L1, the optical path folding element G12, and the second lens L2, the optical lens 1 has strong image stabilization capability, good image quality, and a small size. Furthermore, the first lens group G21 achieves focusing of the optical lens 1 by moving.

[0880] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the third lens group G23. There is no need to set up additional components to fold the optical path for the photosensitive element 2, which is beneficial to provide more space for other optical components, thereby improving the compactness of the camera module 30 and facilitating the miniaturization of the camera module 30.

[0881] In some embodiments, during the transition of the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 is fixed, the first lens group G21 moves along the second direction toward the first optical element G1, and the position of the third lens group G23 is fixed. That is, the distance between the first lens group G21 and the first optical element G1 decreases, so that the subject is imaged on the imaging plane, and the optical lens 1 can image objects at closer distances.

[0882] In some embodiments, the front lens group G11, the optical path deflection element G12, and the rear lens group G13 can be made of the same material. In this case, the three can be integrally formed. For example, the first lens L1, the optical path deflection element G12, and the second lens L2 can be made of the same material and have zero distance between them, and the three can be integrally formed optical elements.

[0883] In some embodiments, the materials of the front lens group G11, the optical path deflection element G12, and the rear lens group G13 can be low-density materials to reduce the weight of the first optical element G1, thereby reducing the power requirement of the drive motor for the first optical element G1. For example, the density of the materials of the front lens group G11, the optical path deflection element G12, and the rear lens group G13 can satisfy: ρ < 4 g / cm³. 3 However, it is not strictly limited to this.

[0884] Please refer to Table 13a. Table 13a is... Figure 56 and Figure 57 The surface type, radius of curvature Y, thickness, refractive index, Abbe number, refraction mode, and thickness in macro mode of each lens, light folding element, and filter 3 of the camera module 30 are shown. The thickness includes the thickness of the structure itself and the spacing between structures; 1E+18 (scientific notation) refers to infinity. Tables 13b and 13c are... Figure 56 and Figure 57Aspheric coefficients of each lens in optical lens 1 of camera module 30 shown in some embodiments.

[0885] Table 13a

[0886]

[0887]

[0888] Table 13b

[0889]

[0890]

[0891] Table 13c

[0892]

[0893]

[0894] The aspheres in optical lens 1 in Table 13a, Table 13b and Table 13c can be defined by, but not limited to, the following aspheric curve equation:

[0895]

[0896] wherein z is the relative distance of a point on the aspheric curve with a vertical distance r from the optical axis to the tangent plane at the intersection point of the aspheric curve and the optical axis; r is the vertical distance of a point on the aspheric curve to the optical axis; c is the curvature; k is the conic coefficient; ai is the i-th order aspheric coefficient, which can be referred to Table 13b. The first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7 and the eighth lens L8 are all aspheres.

[0897] Please refer to Table 13d and Table 13e, Table 13d is Figure 56 and Figure 57 basic parameters of camera module 30 shown in some embodiments, and Table 13e is the relationship between each parameter in Table 13d.

[0898] In Table 13d, IMH is the image height of optical lens 1, EPD is the entrance pupil diameter of optical lens 1, EFL is the focal length of optical lens 1, F1 is the focal length of the first optical element G1, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 in the optical axis direction, ttl is the optical length, ttl 1 is the total optical length, d is the maximum focusing stroke of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. The values of EFL, F1, fn and fm are all effective values, and the unit is millimeter.

[0899] Table 13d

[0900] IMH (mm) 13.34 dm (mm) 6.68 EPD (mm) 11.8 ttl (mm) 33.71 EFL (mm) 25.97 ttl1 (mm) 31.8 F1 (mm) 62.994 d (mm) 2.85 fn (mm) -19.74 L (mm) 150 fm (mm) 19.71 fa (mm) 46.9 fb (mm) -46.1

[0901] Table 13e

[0902]

[0903]

[0904] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.198. And the ratio of the focal length of the first optical element G1 F1 to the focal length of the optical lens 1 EFL is F1 / EFL=2.426. At this time, the optical power of the image side and the object side of the first optical element G1 is fully utilized, and the first optical element G1 has appropriate optical power, the ratio of F1 / EFL is small, the compactness of the optical lens 1 is improved, which is beneficial to the miniaturization of the optical lens 1, the performance of the first optical element G1 is maximized, and the optical lens 1 has strong anti-shake shooting capability and high compactness.

[0905] In some embodiments, the ratio of the focal length fm of the first lens group G21 to the focal length EFL of the optical lens 1 is fm / EFL=0.759. At this time, the focal length fm of the first lens group G21 is appropriate, and the imaging effect of the optical lens 1 at the long focal end and the macro end is good.

[0906] In some embodiments, the ratio of the thickness dm of the first lens group G21 on the axis in the optical axis direction to the optical length TTL of the optical lens 1 is dm / TTL=0.257. At this time, the thickness of the first lens group G21 is thin, which is beneficial to the miniaturization of the optical lens 1.

[0907] In some embodiments, the ratio of the total optical length TTL1 to the image height IMH of the optical lens 1 is TTL1 / IMH=2.384. At this time, the optical lens 1 has a large image height and a small length size.

[0908] In some embodiments, the ratio of the total optical length TTL1 to the entrance pupil diameter EPD of the optical lens 1 is TTL1 / EPD=2.695. At this time, the optical lens 1 has a small length size and a large light amount.

[0909] In some embodiments, the ratio of the total optical length TTL1 of the optical lens 1 to the focal length EFL of the optical lens 1 is TTL1 / EFL=1.224. At this time, the optical lens 1 fully utilizes the length space and has high compactness.

[0910] In some embodiments, the ratio of the maximum focusing stroke d of the first lens group G21 to the focal length EFL of the optical lens 1 is d / EFL = 0.110.

[0911] In some embodiments, the ratio of the focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 is fa / EFL = 1.805. At this time, the optical lens 1 has strong anti-shake capability and small size.

[0912] In some embodiments, the ratio of the focal length fb of the second lens L2 to the focal length EFL of the optical lens 1 is fb / EFL = -1.77. At this time, the optical lens 1 has strong anti-shake shooting capability.

[0913] In some embodiments, the ratio of the focal length fa of the first lens L1 to the focal length fb of the second lens is fa / fb = -1.02. At this time, the first optical element G1 has strong anti-shake capability when anti-shaking, and the aberration of the optical lens 1 is small, that is, the optical lens 1 has strong anti-shake shooting capability.

[0914] Please refer to Figure 58 and Figure 59 , Figure 58 is Figure 56 the axial chromatic aberration diagram of the camera module 30 shown in FIG. 8, Figure 59 is Figure 56 the distortion diagram of the camera module 30 shown in FIG. 9.

[0915] Figure 58 The axial chromatic aberration curve diagram shown in FIG. 8 includes a spherical aberration curve corresponding to different wave bands of the system (the diagram shown includes 650 nm, 610 nm, 555 nm, 510 nm, 470 nm, and 435 nm); the physical meaning is that the light of the corresponding wavelength emitted at 0-degree field of view deviates from the ideal image point after passing through the optical system; the abscissa is the deviation value in the optical axis direction, and the ordinate is the normalized coordinate at the pupil. Figure 58 The values shown in FIG. 8 are small, and the on-axis aberration (spherical aberration, chromatic aberration, etc.) of the optical lens 1 is well corrected.

[0916] Figure 59 The distortion diagram is used to represent the relative deviation amount of the beam convergence point (actual image height) and the ideal image height at different fields of view. Figure 59 In the distortion diagram shown in FIG. 9, the relative deviation amount is within 2.5%, which can ensure that the picture is not obviously deformed.

[0917] Embodiment Fourteen

[0918] Please refer to Figure 60 and Figure 61 , Figure 60 is Figure 5A structural schematic diagram of the camera module 30 at the long-focus end in Embodiment Fourteen is shown in FIG. 14. Figure 61 is Figure 60 A structural schematic diagram of the camera module 30 at the micro-end in some embodiments is shown in FIG. 15.

[0919] In some embodiments, the camera module 30 can include an optical lens 1, a photosensitive element 2, and a filter 3, and light rays sequentially pass through the optical lens 1, the filter 3, and the photosensitive element 2 to form an image. The optical lens 1 includes a first optical element G1 and a second optical element G2, and the second optical element G2 is located on the image side of the first optical element G1.

[0920] The first optical element G1 includes a front lens group G11, a light path folding element G12, and a rear lens group G13.

[0921] For example, the front lens group G11 can include one lens, i.e., a first lens L1. The light path folding element G12 can be a prism, and the light path folding element G12 is used to change the optical axis from a first direction to a second direction. The rear lens group G13 can include one lens, i.e., a second lens L2.

[0922] For example, the refractive indices of the first lens L1, the light path folding element G12, and the second lens L2 are different, so the first lens L1 and the second lens L2 can be fixedly connected to the light path folding element G12 by means of adhesion, or the first lens L1, the light path folding element G12, and the second lens L2 can be formed into an integral component by means of a fixing member.

[0923] For example, the first lens L1 has a positive refractive power, and the second lens L2 has a negative refractive power. The object side surface of the first lens L1 is a convex surface, and the image side surface of the second lens L2 is a concave surface.

[0924] The second optical element G2 includes a first lens group G21 and a second lens group G22. The second lens group G22 and the first lens group G21 are arranged in sequence from the object side to the image side.

[0925] For example, the second lens group G22 includes three lenses arranged in sequence from the object side to the image side, i.e., a third lens L3, a fourth lens L4, and a fifth lens L5. The second lens group G22 is a fixed lens group.

[0926] For example, the first lens group G21 includes three lenses arranged in sequence from the object side to the image side, i.e., a sixth lens L6, a seventh lens L7, and an eighth lens L8. The first lens group G21 is a movable lens group, and the first lens group G21 can move along its optical axis. At this time, the first lens group G21 is the lens group closest to the image side of the second optical element G2.

[0927] In this embodiment, the first lens L1, the light path folding element G12 and the second lens L2 are relatively fixed, and the three can be collectively rotated to realize the anti-shake of the optical lens 1. Therefore, through the cooperation of the first lens L1, the light path folding element G12 and the second lens L2, the optical lens 1 has strong anti-shake ability, better image quality and smaller size. In addition, the first lens group G21 realizes the focusing of the optical lens 1 by moving.

[0928] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the second lens group G22, and there is no need to additionally provide an element for folding the light path for the photosensitive element 2, which is beneficial to provide more setting space for other optical elements, and thus is beneficial to improve the compactness of the camera module 30, and is beneficial to the miniaturization of the camera module 30.

[0929] In some embodiments, during the process of changing the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 is fixed, the first lens group G21 moves along the second direction towards the direction close to the first optical element G1, and the position of the second lens group G22 is fixed. That is, the distance between the first lens group G21 and the first optical element G1 decreases, so that the object is imaged on the imaging surface, and the optical lens 1 can image the object at a closer distance.

[0930] Please refer to Table 14a, which is the surface type, curvature radius Y, thickness, refractive index, Abbe number, refractive mode and thickness in the macro state of each lens, light folding element and filter 3 of the camera module 30 shown in Figure 60 and Figure 61 Table 14b and Table 14c are the aspheric coefficients of each lens of the optical lens 1 of the camera module 30 in some embodiments. Figure 60 Figure 61 Table 14a

[0931] Table 14a

[0932]

[0933]

[0934] Table 14b

[0935] Surface number Y radius k 2nd order coefficient 4th order coefficient 6th order coefficient 8th order coefficient 10th order coefficient 12th order coefficient Object plane 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1 2.02E+01 0.00E+00 0.00E+00 -7.33E-05 -9.49E-07 1.51E-07 -1.85E-08 1.31E-09 2 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 3 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 4 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 5 -7.88E+01 0.00E+00 0.00E+00 -5.60E-05 -1.49E-05 3.66E-06 -5.56E-07 5.35E-08 6 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 7 -1.90E+01 0.00E+00 0.00E+00 -5.37E-04 -9.85E-06 3.15E-06 -1.57E-06 8.47E-07 8 1.95E+01 0.00E+00 0.00E+00 7.62E-04 -1.15E-03 4.49E-04 -1.02E-04 1.44E-05 9 -1.57E+01 0.00E+00 0.00E+00 4.04E-03 -1.10E-03 3.40E-04 -5.92E-05 3.95E-06 10 -6.32E+00 0.00E+00 0.00E+00 4.33E-03 -3.01E-04 8.22E-06 1.40E-05 -2.77E-06 11 -1.75E+01 0.00E+00 0.00E+00 1.50E-04 -1.58E-04 1.51E-04 -1.01E-04 4.60E-05 12 1.76E+01 0.00E+00 0.00E+00 -2.07E-04 -1.07E-04 9.28E-05 -5.82E-05 2.44E-05 13 1.32E+01 0.00E+00 0.00E+00 -8.05E-03 9.32E-04 -3.85E-04 3.16E-04 -1.84E-04 14 -2.74E+01 0.00E+00 0.00E+00 -5.40E-03 1.21E-04 -5.38E-04 6.67E-04 -4.04E-04 15 -8.51E+00 0.00E+00 0.00E+00 4.74E-03 -6.84E-04 -2.62E-04 3.96E-04 -2.30E-04 16 -1.35E+01 0.00E+00 0.00E+00 4.66E-03 -6.82E-04 1.86E-04 -5.93E-05 2.05E-05 17 -8.78E+01 0.00E+00 0.00E+00 1.04E-02 -6.97E-04 -4.81E-05 7.10E-05 -2.93E-05 18 -1.22E+01 0.00E+00 0.00E+00 9.19E-03 -8.97E-04 1.18E-04 -1.99E-05 4.12E-06 19 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 20 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 21 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Image plane 1.00E+18 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

[0936] Table 14c

[0937]

[0938] ​

[0939]

[0940] The aspherical surface in the optical lens 1 in Table 14a, Table 14b and Table 14c can be defined by, but not limited to, the following aspherical curve equation:

[0941]

[0942] wherein z is the relative distance of a point on the aspherical surface with a vertical distance r from the optical axis to the tangent plane at the intersection point on the optical axis; r is the vertical distance of a point on the aspherical curve from the optical axis; c is the curvature; k is the conic coefficient; ai is the i-th order aspherical coefficient, which can be referred to Table 14b. The first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7 and the eighth lens L8 are all aspherical surfaces.

[0943] Please refer to Table 14d and Table 14e, Table 14d is Figure 60 and Figure 61 the basic parameters of the camera module 30 shown in Table 14e is the relationship between the parameters in Table 14d.

[0944] In Table 14d, IMH is the image height of the optical lens 1, EPD is the entrance pupil diameter of the optical lens 1, EFL is the focal length of the optical lens 1, F1 is the focal length of the first optical element G1, fl is the focal length of the second lens group G22, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 in the direction of the optical axis, ttl is the optical length, ttl 1 is the total optical length, d is the maximum focusing stroke of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. The values of EFL, F1, fl and fm are all effective values, and the unit is millimeter.

[0945] Table 14d

[0946] IMH (mm) 13.3 dm (mm) 5.32 EPD (mm) 11.8 ttl (mm) 32.4 EFL (mm) 26 ttl1 (mm) 30.5 F1 (mm) 53.87 d (mm) 2.936 fn (mm) 16.91 L (mm) 150 fm (mm) -13.57 fa (mm) 59.1 fb (mm) -113.7

[0947] Table 14e

[0948]

[0949]

[0950] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.490. And the ratio F1 / EFL of the focal length F1 of the first optical element G1 to the focal length EFL of the optical lens 1 is 2.072. At this time, the power of the image side surface and the object side surface of the first optical element G1 is fully utilized, and the first optical element G1 has appropriate power, the ratio F1 / EFL is small, the compactness of the optical lens 1 is improved, which is beneficial to the miniaturization of the optical lens 1, the performance of the first optical element G1 is maximized, and the optical lens 1 has strong anti-shake shooting capability and high compactness.

[0951] In some embodiments, the ratio fm / EFL of the focal length fm of the first lens group G21 to the focal length EFL of the optical lens 1 is -0.522. At this time, the focal length fm of the first lens group G21 is appropriate, and the imaging effect of the optical lens 1 at the long focal end and the macro end is good.

[0952] In some embodiments, the ratio dm / TTL of the thickness dm of the first lens group G21 on the axis in the optical axis direction to the optical length TTL of the optical lens 1 is 0.257. At this time, the thickness of the first lens group G21 is thin, which is beneficial to the miniaturization of the optical lens 1.

[0953] In some embodiments, the ratio TTL1 / IMH of the total optical length TTL1 of the optical lens 1 to the image height IMH of the optical lens 1 is 2.293. At this time, the optical lens 1 has a large image height and a small length size.

[0954] In some embodiments, the ratio TTL1 / EPD of the total optical length TTL1 of the optical lens 1 to the entrance pupil diameter EPD of the optical lens 1 is 2.585. At this time, the optical lens 1 has a small length size and a large light amount.

[0955] In some embodiments, the ratio TTL1 / EFL of the total optical length TTL1 of the optical lens 1 to the focal length EFL of the optical lens 1 is 1.173. At this time, the optical lens 1 fully utilizes the length space and has high compactness.

[0956] In some embodiments, the ratio d / EFL of the maximum focusing stroke d of the first lens group G21 to the focal length EFL of the optical lens 1 is 0.113.

[0957] In some embodiments, the ratio fa / EFL of the focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 is 2.272. At this time, the optical lens 1 has strong anti-shake capability and small size.

[0958] In some embodiments, the ratio of the focal length fb of the second lens L2 to the focal length EFL of the optical lens 1 is -4.37 (fb / EFL). In this case, the optical lens 1 has a strong anti-shake shooting capability.

[0959] In some embodiments, the ratio of the focal length fa of the first lens L1 to the focal length fb of the second lens is -0.52 (fa / fb). In this case, the first optical element G1 has a strong anti-shake capability when anti-shaking, and the optical lens 1 has a small aberration, that is, the optical lens 1 has a strong anti-shake shooting capability.

[0960] Please refer to Figure 62 and Figure 63 , Figure 62 is Figure 60 the axial chromatic aberration diagram of the camera module 30 shown in FIG. 8, Figure 63 is Figure 60 the distortion diagram of the camera module 30 shown in FIG. 9.

[0961] Figure 62 The axial chromatic aberration curve diagram shown in FIG. 8 includes a spherical aberration curve corresponding to different wave bands of the system (the diagram shown includes 650 nm, 610 nm, 555 nm, 510 nm, 470 nm, and 435 nm). The physical meaning is that the light of the corresponding wavelength emitted at 0 degrees of field deviates from the ideal image point after passing through the optical system. The horizontal coordinate is the deviation value in the direction of the optical axis, and the vertical coordinate is the normalized coordinate at the pupil. Figure 62 The values shown in FIG. 8 are small, and the on-axis aberration (spherical aberration, chromatic aberration, etc.) of the optical lens 1 is well corrected.

[0962] Figure 63 The distortion diagram is used to represent the relative deviation amount of the beam convergence point (actual image height) of different fields of view from the ideal image height. Figure 63 Figure 60 Figure 61 Figure 60 Figure 5 Figure 61 Figure 60 Figure 60 Figure 61 Figure 60 Figure 61 Figure 56 Figure 57 Figure 56 Figure 5 Figure 57 Figure 56 Figure 56 Figure 57 Figure 56 Figure 57 Figure 56 Figure 57 IMH (mm) dm (mm) EPD (mm) ttl (mm) EFL (mm) ttl1 (mm) F1 (mm) d (mm) fn (mm) L (mm) fm (mm) fa (mm) fb (mm) Figure 58 Figure 59 Figure 58 Figure 56 Figure 59 Figure 56 Figure 58 Figure 58 Figure 59 Figure 59 Figure 60 Figure 61 Figure 60 Figure 5 Figure 61 Figure 60 Figure 60 Figure 61 Figure 60 Figure 61 Figure 56 Figure 57 Figure 56 Figure 5 Figure 57 Figure 56 Figure 56 Figure 57 Figure 56 Figure 57 Figure 56 Figure 57 IMH (mm) dm (mm) EPD (mm) ttl (mm) EFL (mm) ttl1 (mm) F1 (mm) d (mm) fn (mm) L (mm) fm (mm In the distortion diagram shown in FIG. 9, the relative deviation amount is within 1%, which can ensure that the picture is not obviously deformed.

[0963] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict, and any combination of the features in different embodiments is within the protection scope of the present application, that is, the above-described multiple embodiments can also be combined according to actual needs.

[0964] It should be noted that all the above-mentioned drawings are exemplary diagrams of the present application, and do not represent the actual size of the product. The size ratio relationship between the components in the drawings is not limited to the actual product of the present application.

[0965] The above merely describes some embodiments and implementations of the present application, and the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An optical lens, characterized in that, It includes a first optical element and a second optical element; The first optical element includes a first lens, an optical path deflection element, and a second lens arranged from the object side to the image side. The optical path deflection element is used to change the optical axis from a first direction to a second direction. The first lens has a positive optical power, and the second lens has a negative optical power; The second optical element is located on the image side of the first optical element. The second optical element includes at least one lens group. During the focusing process of the optical lens, at least one of the lens groups moves along the second direction; During the anti-shake process of the optical lens, the first optical element rotates around the first direction, and / or around the second direction, and / or around a third direction, where the third direction is different from both the first direction and the second direction; Among them, the first optical element satisfies: |F1 / EFL| < 10, and ||sag1*(n1 - 1)| - |sag2*(n2 - 1)|| / ||sag1*(n1 - 1)| + |sag2*(n2 - 1)|| < 0.5; where F1 is the focal length of the first optical element, EFL is the focal length of the optical lens, sag1 is the sag of the object side surface of the first lens at the first aperture, sag2 is the sag of the image side surface of the second lens at the second aperture, n1 is the refractive index of the first lens, and n2 is the refractive index of the second lens; where the first aperture is equal to the second aperture.

2. The optical lens according to claim 1, characterized in that, The second aperture is the diameter at any point on the image side surface of the second lens.

3. The optical lens according to claim 1 or 2, characterized in that, The first optical element satisfies: 0.05 < (||sag1*(n1 - 1)| - |sag2*(n2 - 1)|| / ||sag1*(n1 - 1)| + |sag2*(n2 - 1)||)max < 0.5; or, 0.05 < (||sag1*(n1 - 1)| - |sag2*(n2 - 1)|| / ||sag1*(n1 - 1)| + |sag2*(n2 - 1)||)max < 0.

3.

4. The optical lens according to any one of claims 1 to 3, characterized in that, The optical lens satisfies: F1 / EFL < 7.5, or, F1 / EFL < 2.

5.

5. The optical lens according to any one of claims 1 to 4, characterized in that, The focal length fa of the first lens and the focal length EFL of the optical lens satisfy: 0.5 < fa / EFL < 1.5, or, 0.6 < fa / EFL < 1.2, or, 0.5 < fa / EFL < 3.

6. The optical lens according to any one of claims 1 to 5, characterized in that, The focal length fb of the second lens and the focal length EFL of the optical lens satisfy: |fb / EFL| < 2, or, 0.5 < |fb / EFL| < 1.7, or, |fb / EFL| < 5.

7. The optical lens according to any one of claims 1 to 6, characterized in that, The focal length fa of the first lens and the focal length fb of the second lens satisfy: 0.5 < |fa / fb| < 1.8, or, 0.6 < |fa / fb| < 0.

9.

8. The optical lens according to any one of claims 1 to 7, characterized in that, The second optical element includes a first lens group. During the focusing process of the optical lens, the first lens group moves along the second direction; The focal length fm of the first lens group and the focal length of the optical lens satisfy: 0.2 < fm / EFL < 1.2; or, 0.4 < fm / EFL < 1, or, 0.2 < |fm / EFL| < 1.

2.

9. The optical lens according to claim 8, characterized in that, The relationship between the axial length dm of the first lens group and the optical length TTL satisfies: dm / ttl < 0.4; Wherein, the optical length TTL is the length from the light incident surface of the optical lens to the imaging surface after the optical path is unfolded.

10. The optical lens according to claim 8 or 9, characterized in that, The maximum focusing stroke d of the first lens group satisfies: d < 5.6 mm.

11. The optical lens according to any one of claims 1 to 10, characterized in that, The total optical length TTL1 of the optical lens and the image height IMH of the optical lens satisfy: TTL1 / IMH < 3; or, TTL1 / IMH < 2; Wherein, the total optical length TTL1 is the distance from the end of the optical path folding element facing away from the imaging surface to the imaging surface.

12. The optical lens according to any one of claims 1 to 11, characterized in that, The total optical length TTL1 of the optical lens and the entrance pupil diameter EPD of the optical lens satisfy: TTL1 / EPD < 3.5, or, TTL1 / EPD < 2.

8.

13. The optical lens according to any one of claims 1 to 12, characterized in that, The total optical length TTL1 of the optical lens and the focal length EFL of the optical lens satisfy: TTL1 / EFL < 1.

3.

14. The optical lens according to any one of claims 1 to 13, characterized in that, The total optical length TTL1 of the optical lens satisfies: 20 mm < TTL1 < 35 mm.

15. The optical lens according to any one of claims 1 to 14, characterized in that, The maximum anti-shake angle of the first optical element is within the range of 0.5° - 5°, or, the maximum anti-shake angle of the first optical element is greater than 1°.

16. The optical lens according to any one of claims 1 to 15, characterized in that, The first lens is adhesively connected or fixedly connected to the optical path folding element by a structural member, or, the first lens is integrally formed with the optical path turning element; The second lens is adhesively connected or fixedly connected to the optical path folding element by a structural member, or, the second lens is integrally formed with the optical path turning element.

17. The optical lens according to any one of claims 1 to 16, characterized in that, The focal length fa of the first lens and the focal length fb of the second lens satisfy: -0.4 < (fa + fb) / (fa - fb) < 0.4, or, -0.3 < (fa + fb) / (fa - fb) < 0.

3.

18. The optical lens according to any one of claims 1 to 17, characterized in that, The second optical element includes at least two lens groups, and the lens group closest to the image side in the second optical element includes at least 3 lenses.

19. A camera module, characterized in that, Comprising a photosensitive element and an optical lens according to any one of claims 1 to 18, the photosensitive element being located on the image side of the optical lens.

20. The camera module according to claim 19, characterized in that, The camera module further includes an anti-shake motor and a focusing motor, the first optical element of the optical lens is mounted on the anti-shake motor, the second optical element of the optical lens is mounted on the focusing motor, and the photosensitive element of the optical lens is fixedly connected to the focusing motor; The anti-shake motor is used to drive the first optical element to perform anti-shake movement, and the focusing motor is used to drive the second optical element to focus or zoom.

21. An electronic device, characterized in that, Comprising an image processor and the camera module according to claim 19 or 20, the image processor is communicatively connected to the camera module, and the image processor is configured to obtain image data from the camera module and process the image data.

Images