Optical lens, camera module, and electronic device

Abstract

The present application relates to the field of optical lenses, and in particular to an optical lens, a camera module, and an electronic device. The optical lens comprises a first lens group having positive focal power, a second lens group having positive focal power, a third lens group having negative focal power, a fourth lens group having positive focal power, a fifth lens group having negative focal power, and an optical path switching element, wherein the third lens group, the fourth lens group and the fifth lens group are sequentially arranged from an object side to an image side; when the optical lens is in a first photographing mode, the optical lens has a first focal length; when the optical lens is in a second photographing mode, the optical lens has a second focal length; and during switching of the optical lens from the first photographing mode to the second photographing mode, at least two of the third lens group, the fourth lens group, and the fifth lens group move along the optical axis, and the optical lens is switched from the first focal length to the second focal length, thereby enabling the optical lens to have a strong capability of adjusting the optical path and facilitating a compact design of the optical lens.

Description

Optical lens, camera module and electronic device

[0001] The present application claims priority to the Chinese patent application No. 202411081179.8, filed on August 7, 2024, and entitled "Optical lens, camera module and electronic device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of optical lenses, and in particular to an optical lens, a camera module and an electronic device. BACKGROUND

[0003] Compared with digital zoom with loss of image quality, optical zoom has no loss of image quality and can significantly improve imaging quality, and has become a key research direction for improving the photographing performance of electronic devices. At present, in order to realize the optical zoom function of portable electronic devices such as mobile phones, a plurality of camera modules with different focal lengths are usually arranged inside the electronic device, but such camera modules generally have a large volume and occupy a large internal space of the device, and therefore there is an urgent need to provide other optical zoom solutions to solve this technical problem. 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, an optical lens includes a first lens group, a second lens group, a third lens group, a fourth lens group, a fifth lens group and a light path switching element. The first lens group has positive focal power; the second lens group has positive focal power; the third lens group has negative focal power; the fourth lens group has positive focal power; the fifth lens group has negative focal power; wherein the third lens group, the fourth lens group and the fifth lens group are arranged in order from the object side to the image side, when the optical lens is in a first shooting mode, the light path switching element is located on the image side of the first lens group and on the object side of the third lens group, the optical lens has a first focal length; when the optical lens is in a second shooting mode, the light path switching element is located on the image side of the second lens group and on the object side of the third lens group, the optical lens has a second focal length; during the process of switching the optical lens from the first shooting mode to the second shooting mode, at least two of the third lens group, the fourth lens group and the fifth lens group move along the optical axis, and the optical lens switches from the first focal length to the second focal length.

[0006] The first lens group can include at least one lens. The second lens group can include at least one lens. The third lens group can include at least one lens. The fourth lens group can include at least one lens. The fifth lens group can include at least one lens.

[0007] The light path switching element can have light guiding capability to propagate the light rays. The light path switching element is located on the object side of the third lens group. The light path switching element can be configured to receive the light beam from the first lens group and propagate to the third lens group. The light path switching element can also be configured to receive the light beam from the second lens group and propagate to the third lens group. The light path switching element can include at least one element that changes the direction of the light rays, such as a prism, a mirror, or the like.

[0008] In the embodiment, different lens groups are configured to receive the object light to have different focal lengths. The light path switching element is configured to make the first lens group and the second lens group of the optical lens receive the object light from the object and propagate to the third lens group, the fourth lens group, and the fifth lens group, respectively, for imaging. This is equivalent to integrating two lenses into one optical lens, and making the optical lens have two different focal lengths. The optical lens can use different focal lengths (i.e., use the first lens group or the second lens group to enter the first shooting mode or the second shooting mode) to shoot in different shooting scenarios, realize different focal length optical zoom, i.e., realize lossless optical zoom, and is conducive to obtaining higher quality images. The optical lens has better scene adaptability, and the user's shooting experience is greatly improved. Moreover, multiple camera modules do not need to be arranged in the electronic device to realize shooting with different focal lengths, thereby reducing the size of the camera module.

[0009] By reasonably configuring the optical powers of the first lens group, the second lens group, the third lens group, the fourth lens group, and the fifth lens group, the multiple lens groups with optical powers are matched to be conducive to correcting aberrations during imaging of the optical lens. Moreover, at least two lens groups can have strong light path adjusting capability by moving, which is conducive to making the movable lens groups have a small moving distance, thereby being conducive to further shortening the total optical length of the optical lens, and further being conducive to miniaturization design of the optical lens, i.e., realizing small size optical lens design with zoom capability, thereby being conducive to reducing the size of the camera module.

[0010] In some embodiments, during the process of switching the optical lens from the first shooting mode to the second shooting mode, the third lens group and the fifth lens group move in the same direction along the optical axis of the third lens group, and the optical lens is switched from the first focal length to the second focal length.

[0011] In the embodiment, the third lens group and the fifth lens group are arranged to be movable, and cooperate with the light path switching element to make the optical lens change to a set focal length. Since the third lens group, the fourth lens group and the fifth lens group are arranged in sequence, the third lens group and the fifth lens group are far apart, and the two sides of the third lens group and the fifth lens group have a large space. Therefore, when the driving components of the third lens group and the fifth lens group are arranged, the large space between the third lens group and the fifth lens group makes the design of the driving components easier, and the installation of the driving components is easy. In addition, the large space on both sides of the third lens group and the fifth lens group makes the third lens group and the fifth lens group have a large moving space.

[0012] In some embodiments, when the optical lens is in the first shooting mode, the light path switching element changes the direction of the light beam from the optical axis direction of the first lens group to the optical axis direction of the third lens group; when the optical lens is in the second shooting mode, the light path switching element changes the direction of the light beam from the optical axis direction of the second lens group to the optical axis direction of the third lens group. The second lens group is located on the side of the first lens group away from the third lens group, and the light path switching element moves along the optical axis direction of the third lens group during the switching of the optical lens from the first shooting mode to the second shooting mode.

[0013] In the embodiment, the arrangement direction of the first lens group and the second lens group, the arrangement direction of the third lens group, the fourth lens group and the fifth lens group, and the moving direction of the light path switching element are the same. By arranging the structure of the optical lens and moving the light path switching element, the switching between the first shooting mode and the second shooting mode is realized. The moving components are less, which is beneficial to improve the accuracy of the movement of the optical lens, and makes the structure of the optical lens simpler, which is beneficial to improve the reliability of the optical lens.

[0014] In some embodiments, the focal length of the first lens group is smaller than the focal length of the second lens group.

[0015] Since the focal length of the first lens group is smaller than the focal length of the second lens group, it is easier to make the optical lens have different focal lengths in the first shooting mode and the second shooting mode.

[0016] In the embodiment, the first lens group is arranged on the side close to the third lens group, and the second lens group is arranged on the side of the first lens group away from the third lens group. The first lens group can make full use of the space between the second lens group and the third lens group in the second direction, so that it is not necessary to additionally arrange a space for the first lens group.

[0017] In the embodiment, the relative sizes of the focal lengths of the first lens group and the second lens group are arranged by the positions of the first lens group and the second lens group. This is beneficial to further reasonably utilize the space, and is beneficial to reasonably allocate the focal lengths of the lens groups on the object side of the light path switching element, and is beneficial to reduce the design difficulty of the optical lens.

[0018] In some embodiments, the optical lens satisfies: 0.2 < P / TTL < 0.3; wherein P is a moving distance of the light path switching element during switching of the optical lens from the first shooting mode to the second shooting mode, and TTL is the total optical length of the optical lens.

[0019] In the embodiment, by setting a proper moving distance of the light path switching element, the light path switching element can receive the light beams of the first lens group and the second lens group respectively by moving, and occupies a small length space, thereby providing sufficient accommodation space and moving space for the elements such as the third lens group, the fourth lens group, the fifth lens group, and the like.

[0020] In some embodiments, the optical lens satisfies: a < P; wherein in the second shooting mode, the light path switching element has a first distance a with the third lens group; during switching of the optical lens from the first shooting mode to the second shooting mode, the light path switching element moves a distance of P, and the third lens group moves towards the light path switching element.

[0021] In the embodiment, the position of the third lens group in the second shooting mode has a partial space overlap with the position of the light path switching element in the first shooting mode, the third lens group intrudes into the position of the light path switching element in the first shooting mode, and the space is multiplexed with respect to the overlap space, thereby saving the space in the optical axis direction of the third lens group, which is beneficial to reducing the total optical length TTL, thereby being beneficial to miniaturization design of the optical lens, and without affecting the zoom performance of the optical lens.

[0022] In some embodiments, the optical lens further comprises a light path reflection element, the light path reflection element is located on the image side of the fifth lens group, and the light path reflection element is configured to change the light beam from the optical axis direction of the fifth lens group to a third direction, the third direction has an included angle with the optical axis direction of the fifth lens group; the third direction is parallel to the optical axis direction of the first lens group, the light path reflection element has an exit surface, the exit surface is perpendicular to the third direction, and the exit surface is located on the same side of the optical axis of the third lens group as the first lens group.

[0023] In the embodiment, by setting the light path reflection element, the light path can be folded to reduce the total optical length TTL of the optical lens, thereby facilitating miniaturization of the optical lens; and the light path reflection element can also facilitate the position setting of the imaging surface, thereby facilitating the position setting of the photosensitive element in the camera module, and also being beneficial to setting a larger photosensitive element, thereby making the imaging quality higher.

[0024] And, since the light is emitted by the exit surface of the light path reflection element along the third direction, since the exit surface and the first lens group are located on the same side of the optical axis of the third lens group, the imaging surface is also located on the same side of the optical axis of the third lens group; it is equivalent to multiplexing the height space occupied by the first lens group in the direction of its optical axis, so as not to reserve space for the imaging surface and the photosensitive element, thereby facilitating the position setting of the photosensitive element, thereby facilitating the reduction of the height of the optical lens in the third direction, and facilitating the miniaturization design.

[0025] In some embodiments, the optical lens satisfies: F2>F1, and 5<(|f3 / SK1|+|f5 / SK2|) / M<20; wherein, SK1 is the distance that the third lens group moves in the process of switching the optical lens from the first shooting mode to the second shooting mode, SK2 is the distance that the fifth lens group moves in the process of switching the optical lens from the first shooting mode to the second shooting mode, f3 is the focal length of the third lens group, f5 is the focal length of the fifth lens group, F1 is the first focal length, F2 is the second focal length, and M is the zoom ratio of the optical lens, M=F2 / F1.

[0026] For example, 5<(|f3 / SK1|+|f5 / SK2|) / M<7; or 10<(|f3 / SK1|+|f5 / SK2|) / M<11; or 15<(|f3 / SK1|+|f5 / SK2|) / M<16.

[0027] In this embodiment, when the system focal length of the optical lens changes, the contribution of the zoom element (such as the third lens group and the fifth lens group) to the total focal length is related to the focal length of the zoom element and its position. By reasonably designing M and reasonably allocating f3 and f5, when the optical lens satisfies the above formula, the optical lens can be designed as a large zoom ratio lens with small size.

[0028] In some embodiments, the optical lens satisfies: 0.15<f4 / F2<0.3; wherein, f4 is the focal length of the fourth lens group, and F2 is the second focal length.

[0029] In this embodiment, since the position of the fourth lens group is relatively fixed, the third lens group and the fifth lens group are movable lens groups, so that the focal length of the fourth lens group is reasonably allocated, thereby facilitating the further reasonable allocation of the focal lengths of the third lens group and the fifth lens group, thereby simplifying the design of the optical lens.

[0030] In some embodiments, the optical lens satisfies: 0.3<-f3 / F2<0.4; wherein, f3 is the focal length of the third lens group, and F2 is the second focal length.

[0031] In the embodiment, the optical lens has a small total track length TTL, and the space provided for the third lens group to move during zooming or focusing is limited. Therefore, the focal length of the third lens group is set to facilitate the third lens group to have a proper moving distance, so that the third lens group is better applied in the optical lens.

[0032] In some embodiments, the optical lens satisfies: 0.3<-f5 / F2<0.45; where f5 is the focal length of the fifth lens group, and F2 is the second focal length.

[0033] In the embodiment, the optical lens has a small total track length TTL, and the space provided for the fifth lens group to move during zooming or focusing is limited. Therefore, the focal length of the fifth lens group is set to facilitate the fifth lens group to have a proper moving distance, so that the fifth lens group is better applied in the optical lens.

[0034] In some embodiments, the optical lens satisfies: F2>F1, and 15<TTL / M<20; where TTL is the total track length of the optical lens, F1 is the first focal length, F2 is the second focal length, and M is the zoom ratio of the optical lens, M=F2 / F1.

[0035] For example, when designing the optical lens, the closer TTL / M is to the endpoint value 15, the larger the zoom ratio M of the optical lens can be under a certain total track length TTL; or the closer TTL / M is to the endpoint value 20, the lower the design difficulty of the optical lens.

[0036] In the embodiment, the total track length TTL and the zoom ratio M are reasonably set to make the optical lens have a proper structure and performance.

[0037] In some embodiments, the optical lens satisfies: F2 / TTL>0.8.

[0038] In the embodiment, the second focal length F2 and the total track length TTL are reasonably set, so that the optical lens can have a larger second focal length F2 under a certain total track length TTL, thereby making the optical lens have a stronger telephoto capability; or the optical lens can have a smaller total track length TTL under a certain second focal length F2, thereby making the optical lens have a smaller size.

[0039] In some embodiments, the optical lens satisfies: 6<(F1+F2) / IMH<10; where IMH is the half image height of the optical lens, F1 is the first focal length, and F2 is the second focal length.

[0040] In the embodiment, the first focal length F1, the second focal length F2 and the half image height IMH are reasonably designed, so that the optical lens has a larger first focal length F1 and a larger second focal length F2, and has a suitable half image height IMH, so that the three parameters are balanced. It can be understood that the photosensitive element needs to be matched with the half image height IMH, and therefore a suitable half image height is conducive to selecting a photosensitive element with a suitable size. By designing a suitable first focal length F1, a suitable second focal length F2 and a suitable half image height IMH, an equivalent focal length corresponding to the first focal length F1 and an equivalent focal length corresponding to the second focal length F2 can be obtained.

[0041] In some embodiments, the optical lens satisfies: M = F2 / F1, 1 < M < 2; wherein M is the zoom ratio of the optical lens; F1 is the first focal length, and F2 is the second focal length.

[0042] For example, the first focal length F1 and the second focal length F2 in the embodiment are effective focal lengths, the zoom of the embodiment is lossless optical zoom, and the equivalent zoom ratio is the same as the effective zoom ratio.

[0043] In the embodiment, a suitable zoom ratio M is set, so as to balance the relationship between the small total optical length TTL and the large zoom ratio M, so that the design of the optical lens is easier.

[0044] In some embodiments, the optical lens satisfies: 1 < f2 / f1 < 2; wherein f1 is the focal length of the first lens group, and f2 is the focal length of the second lens group.

[0045] For example, the ratio f2 / f1 of the focal length f2 of the second lens group to the focal length f1 of the first lens group can also be in the range of 1 to 1.5.

[0046] In the embodiment, the third lens group, the fourth lens group and the fifth lens group are multiplexed in the first shooting mode and the second shooting mode of the optical lens. By reasonably setting the zoom ratio M, the first lens group and the second lens group can have a larger zoom ratio, and can better compatible with the third lens group, the fourth lens group and the fifth lens group, thereby reducing the design difficulty, and also enabling the optical lens to have a better imaging effect.

[0047] In some embodiments, the optical lens is configured such that, during focusing of the optical lens, at least one lens of the third lens group, the fourth lens group and the fifth lens group moves along the optical axis.

[0048] In the embodiment, by moving at least one of the three to focus, the optical lens can realize imaging from macro to infinity (i.e. the optical lens can be used for long-focus shooting and macro shooting), so that the shooting distance range of the optical lens is larger and the application range is wider.

[0049] In some embodiments, the optical lens is configured to move the third lens group and the fifth lens group along the optical axis of the third lens group during focusing of the optical lens.

[0050] In the embodiment, since the third lens group and the fifth lens group can be moved to zoom the optical lens, the third lens group and the fifth lens group are also moved during focusing, the driving components for the third lens group and the driving components for the fifth lens group can be reused respectively, that is, the driving components during zooming and focusing can be the same, thereby facilitating simplification of the driving structure of the optical lens and miniaturization of the optical lens.

[0051] In a second aspect, an embodiment of the present application provides a camera module, comprising a photosensitive element and an optical lens provided by any of the above embodiments, and the photosensitive element is located on the image side of the optical lens.

[0052] In the embodiment, the camera module has a small volume and strong zooming capability.

[0053] In some embodiments, the photosensitive element is configured to move along a direction perpendicular to the optical axis of the photosensitive element during anti-shake of the camera module.

[0054] In the embodiment, by moving the photosensitive element, the light incident on the photosensitive element can be kept relatively stable, thereby reducing the shaking of the imaging and improving the imaging quality of the camera module.

[0055] In a third aspect, an embodiment of the present application provides an electronic device, characterized in comprising an image processor and a camera module provided by the second aspect, the image processor is in communication connection with the camera module, and the image processor is configured to acquire image data from the camera module and process the image data.

[0056] In the embodiment, the electronic device has strong adaptability to the shooting environment, strong shooting capability, and good user experience. SUMMARY

[0057] In order to illustrate the technical solutions in the embodiments of the present application or the background art, the drawings needed to be used in the embodiments of the present application or the background art will be described below.

[0058] In the drawings:

[0059] FIG. 1 is a structural schematic diagram of an electronic device in some embodiments of the present application;

[0060] FIG. 2 is a partially exploded structural schematic diagram of the electronic device shown in FIG. 1;

[0061] FIG. 3 is a structural schematic diagram of a camera module shown in FIG. 1;

[0062] FIG. 4 is a schematic diagram of the camera module shown in FIG. 3 in some embodiments;

[0063] FIG. 5 is a schematic diagram of the camera module shown in FIG. 4 in a first and second shooting mode;

[0064] FIG. 6 is a schematic diagram of the camera module shown in FIG. 5 in some embodiments in the first and second shooting mode;

[0065] FIG. 7a is an axial chromatic aberration plot of the camera module shown in FIG. 6 in some embodiments in the first shooting mode;

[0066] FIG. 7b is a field curvature plot of the camera module shown in FIG. 6 in some embodiments in the first shooting mode;

[0067] FIG. 7c is a distortion plot of the camera module shown in FIG. 6 in some embodiments in the first shooting mode;

[0068] FIG. 8a is an axial chromatic aberration plot of the camera module shown in FIG. 6 in some embodiments in the second shooting mode;

[0069] FIG. 8b is a field curvature plot of the camera module shown in FIG. 6 in some embodiments in the second shooting mode;

[0070] FIG. 8c is a distortion plot of the camera module shown in FIG. 6 in some embodiments in the second shooting mode;

[0071] FIG. 9 is a schematic diagram of the camera module shown in FIG. 4 in another embodiment in a first and second shooting mode;

[0072] FIG. 10a is an axial chromatic aberration plot of the camera module shown in FIG. 9 in some embodiments in the first shooting mode;

[0073] FIG. 10b is a field curvature plot of the camera module shown in FIG. 9 in some embodiments in the first shooting mode;

[0074] FIG. 10c is a distortion plot of the camera module shown in FIG. 9 in some embodiments in the first shooting mode;

[0075] FIG. 11a is an axial chromatic aberration plot of the camera module shown in FIG. 9 in some embodiments in the second shooting mode;

[0076] FIG. 11b is a field curvature plot of the camera module shown in FIG. 9 in some embodiments in the second shooting mode;

[0077] FIG. 11c is a distortion plot of the camera module shown in FIG. 9 in some embodiments in the second shooting mode;

[0078] Fig. 12 is a structural schematic diagram of the camera module shown in Fig. 4 in some embodiments in the first shooting mode and the second shooting mode;

[0079] Fig. 13a is an axial chromatic aberration curve of the camera module shown in Fig. 12 in some embodiments in the first shooting mode;

[0080] Fig. 13b is a field curvature graph of the camera module shown in Fig. 12 in some embodiments in the first shooting mode;

[0081] Fig. 13c is a distortion graph of the camera module shown in Fig. 12 in some embodiments in the first shooting mode;

[0082] Fig. 14a is an axial chromatic aberration curve of the camera module shown in Fig. 12 in some embodiments in the second shooting mode;

[0083] Fig. 14b is a field curvature graph of the camera module shown in Fig. 12 in some embodiments in the second shooting mode;

[0084] Fig. 14c is a distortion graph of the camera module shown in Fig. 12 in some embodiments in the second shooting mode;

[0085] Fig. 15 is a structural schematic diagram of the camera module shown in Fig. 4 in some other embodiments in the first shooting mode and the second shooting mode;

[0086] Fig. 16a is an axial chromatic aberration curve of the camera module shown in Fig. 15 in some embodiments in the first shooting mode;

[0087] Fig. 16b is a field curvature graph of the camera module shown in Fig. 15 in some embodiments in the first shooting mode;

[0088] Fig. 16c is a distortion graph of the camera module shown in Fig. 15 in some embodiments in the first shooting mode;

[0089] Fig. 17a is an axial chromatic aberration curve of the camera module shown in Fig. 15 in some embodiments in the second shooting mode;

[0090] Fig. 17b is a field curvature graph of the camera module shown in Fig. 15 in some embodiments in the second shooting mode;

[0091] Fig. 17c is a distortion graph of the camera module shown in Fig. 15 in some embodiments in the second shooting mode. DETAILED DESCRIPTION

[0092] For the convenience of understanding, the following first explains and describes the English abbreviations and related technical terms involved in the embodiments of the present application.

[0093] Focal power, equal to the difference between the converging power of the image side and the converging power of the object side, which represents the ability of the optical system to bend light.

[0094] Lens or lens group with positive focal power, which has a positive focal length and has the effect of converging light rays.

[0095] Lens or lens group with negative focal power, which has a negative focal length and has the effect of diverging light rays.

[0096] Focal length, also known as 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 lens or lens group forms a clear image of an object at infinity. 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.

[0097] 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.

[0098] 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.

[0099] Aperture diaphragm, which is used to control the amount of light that enters the lens into the body of the camera. It is usually in the lens.

[0100] F-number, also known as F-number, is a relative value (the inverse of the relative aperture) derived from the focal length of the lens / the 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-focus lens.

[0101] Total track length (TTL), which refers to the total length from the surface closest to the object side of the lens to the imaging surface. TTL is a major factor in determining the height of the camera.

[0102] Imaging surface, located on the image side of all lenses in the long-focus lens, and the light forms an image after passing through each lens in the long-focus lens.

[0103] Optical axis, is a vertical axis through the center of the lens, also refers to the center line of the light beam (light column), or the symmetry axis of the optical system. The lens optical axis is the axis through the center of each lens of the lens. When the light parallel to the optical axis enters the convex lens, the ideal convex lens should be all the light converging at a point behind the lens. This point of converging all the light is called the focal point.

[0104] Focal point, the converging point of parallel light after refraction through a lens or lens group.

[0105] Image-side focal plane, also known as back focal plane or second focal plane, is the plane passing through the image-side focal point (also known as back focal point or second focal point) and perpendicular to the optical axis of the system.

[0106] Abbe number (Abbe), that is, the dispersion coefficient, is the ratio of the difference in refractive index of an optical material at different wavelengths, representing the degree of dispersion of the material.

[0107] Field of view (FOV), in optical instruments, the angle formed by the two edges of the maximum range of the object image that can pass through the lens of the optical instrument with the lens as the vertex, is called the field of view angle. The size of the field of view angle determines the field of view of the optical instrument. The larger the field of view angle, the larger the field of view, and the smaller the optical magnification.

[0108] Half image height (ImH): refers to the half image height of the image formed by the lens.

[0109] Maximum image circle diameter (MIC): the diameter of the largest diameter circle formed by the circular optical system. It depends on or determines the size of the sensor used.

[0110] 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 actual light rays passing through different apertures of the lens are difficult to perfectly intersect at a point, but have a certain deviation from the position of the near-axis image point. These differences are collectively referred to as aberration.

[0111] Longitudinal spherical aberration (longitudinal spherical aberration), also known as longitudinal chromatic aberration or position chromatic aberration or axial aberration, a bundle of light parallel to the optical axis converges at different positions before and 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-side focal plane of different colors of light cannot coincide when the final image is formed, and the dispersion of the complex color light is formed.

[0112] Distortion, also called as aberration, is the degree of distortion of the image of an object formed by an optical system relative to the object itself. Distortion is due to the effect of the stop spherical aberration, the intersection height of the chief ray of different fields after passing through the optical system is not equal to the ideal image height, and the difference between them is the distortion. Therefore, distortion only changes the imaging position of the off-axis object point on the ideal surface, which causes the shape of the image to be distorted, but does not affect the sharpness of the image.

[0113] Astigmatism, due to the fact that 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. The meridional pencil and the sagittal pencil are the names of the light beams in the two perpendicular planes in the rotationally symmetric optical system.

[0114] Meridian plane, the plane formed by the chief ray (main light beam) of the off-axis object point and the optical axis, is called the meridian plane.

[0115] Sagittal surface, the plane passing through the chief ray (main light beam) of the off-axis object point and perpendicular to the meridian plane, is called the sagittal surface.

[0116] Curvature of field, the curvature of field is used to represent the difference between the position of the clearest image point of the off-center field light after passing through the optical lens group and the position of the clearest image point of the center field on the optical axis. When the lens has field curvature, the intersection point of the entire light beam does not coincide with the ideal image point, although a clear image point can be obtained at each specific point, but the entire image plane is a curved surface.

[0117] Optical image stabilization (OIS), relies on the structure and movement of special lenses or light-sensitive elements to reduce the instability of the image caused by the operator's shaking during use to the greatest extent.

[0118] Auto focus (AF), is a method of using the principle of reflection of object light, the reflected light is accepted by the sensor on the camera (module) through computer processing, and the electric focusing device is driven to focus.

[0119] The embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0120] In the description of the embodiments of the present application, it should be noted that unless specifically defined and limited otherwise, the terms "mount", "connect" should be interpreted broadly, for example, "connect" can be detachable connection, or can be non-detachable connection, can be direct connection, or indirect connection through intermediate medium. "Multiple" means at least two.

[0121] The orientation terms mentioned in the embodiments of the present application, such as "upper", "lower", "inner", "outer", "top", "bottom", "side" and the like, are only the directions of the drawings, therefore, the orientation 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.

[0122] In the embodiments of the present application, the relative positional relationship mentioned, such as parallel, vertical, aligned and the like, are all relative to the current process level, and are not strictly limited, and a small amount of deviation is allowed, such as approximately parallel, approximately vertical, approximately aligned 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.

[0123] In the embodiments of the present application, the terms "first", "second", "third", "fourth" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second", "third", "fourth" can explicitly or implicitly include one or more of the features.

[0124] Please refer to FIG. 1 and FIG. 2, FIG. 1 is a structural schematic diagram of an electronic device 100 in some embodiments provided by the present application, and FIG. 2 is a partially exploded structural schematic diagram of the electronic device 100 shown in FIG. 1. In the present embodiment, the electronic device 100 is taken as a mobile phone for example for description. It can be understood that FIG. 1 and FIG. 2 only schematically show some components included in the electronic device 100, and the actual shape, actual size, actual position and actual structure of these components are not limited by FIG. 1 and FIG. 2, and the electronic device 100 can also include more or fewer components compared with FIG. 1 and FIG. 2.

[0125] 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.

[0126] 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.

[0127] 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.

[0128] The light entrance surface of the camera module 30 faces the back cover 201. The back cover 201 is provided with a mounting hole 2011, and the camera decoration cover 203 covers and is fixed to the mounting hole 2011. The camera decoration cover 203 is configured to protect the camera module 30. In some embodiments, the camera decoration cover 203 protrudes to the side of the back cover 201 away from the light-transmitting cover plate 101. In this way, the camera decoration cover 203 can increase the installation space of the camera module 30 in the thickness direction of the electronic device 100. In other embodiments, the camera decoration cover 203 can be flush with the back cover 201 or recessed into the internal accommodating space of the electronic device 100.

[0129] The camera decoration cover 203 is provided with a light-transmitting window 2031. The light-transmitting window 2031 allows the scene light to enter the light entrance surface of the camera module 30. That is, the light passes through the back cover and enters the camera module 30.

[0130] In the embodiment, the camera module 30 is used as a rear camera module 30 of the electronic device 100. The two camera modules 30 can be a camera module 301 and a camera module 302, respectively. The camera module 301 can be used as a rear main camera module 30, and the camera module 302 can be used as a rear telephoto camera module 30. In other embodiments, the electronic device 100 can further include another camera module 30, which is used as a rear wide-angle camera module 30.

[0131] 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 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.

[0132] In some embodiments, as shown in FIG. 2, 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, and the image processor 60 is fixed to 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 data transmission through coupling. It can be understood that the camera module 30 and the image processor 60 can also be in communication connection through other data transmission modes.

[0133] 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.

[0134] 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, so as to save memory space.

[0135] In other embodiments, the electronic device 100 can also not include the screen 10 and / or the camera decoration cover 203.

[0136] The electronic device 100 can have a width direction X, a length direction Y, and a thickness direction Z. The length direction Y is perpendicular to the width direction X, and the thickness direction Z is perpendicular to the width direction X and the length direction Y. The display screen 102 and the housing 20 can be arranged relative to the thickness direction Z of the electronic device 100. At this time, the housing 20 can be perpendicular to the thickness direction Z of the electronic device 100.

[0137] It can be understood that the mounting position of the camera module 30 of the electronic device 100 shown in FIGS. 1 and 2 is only schematic, 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.

[0138] Please refer to FIGS. 2 and 3, FIG. 3 is a schematic structural diagram of the camera module 30 shown in FIG. 1.

[0139] 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.

[0140] 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.

[0141] 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 faces 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 reflects 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 semiconductor coexists with N (band-electric) and P (band+ electric) levels on the complementary metal-oxide semiconductor. The current generated by the two complementary effects can be recorded and interpreted into images by the processing chip.

[0142] The optical lens 1 mainly uses the refraction principle of the lens to form an image, that is, the light rays of the scene pass 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 greater distance.

[0143] The optical lens 1 can be an upright lens or a periscopic lens. The present embodiment takes the optical lens 1 as a periscopic lens for description. When the optical lens 1 is a periscopic lens, it can be better applied to a thin electronic device.

[0144] 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.

[0145] 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 the present embodiment, the filter 3 is a separate component. In other embodiments, the filter 3 structure can be cancelled, and the surface treatment or material treatment of at least one optical element of the telephoto lens can be used to achieve filtering. The present application does not strictly limit the specific embodiments of the structure or structure used to achieve filtering.

[0146] In some embodiments, the camera module 30 can further include a housing 4. The photosensitive element 2 and the optical lens 1 can be installed in the internal space of the housing 4. The housing 4 can be provided with a light transmission port 41 for transmitting light to the optical lens 1. The number of light transmission ports 41 can be multiple, so that the light of the scene can enter the optical lens 1 from different light transmission ports 41.

[0147] In the present embodiment, external light can pass through the optical lens 1 and 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. 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 an image processor 60 (see FIG. 2).

[0148] FIG. 4 is a structural schematic diagram of the camera module 30 in some embodiments of FIG. 3.

[0149] In some embodiments, the optical lens 1 includes a first lens group G1, a second lens group G2, a third lens group G3, a fourth lens group G4, a fifth lens group G5, and a light path switching element 5. The optical lens 1 has a first shooting mode and a second shooting mode. It can be understood that when the optical lens 1 is in the first shooting mode, the camera module 30 is also in the first shooting mode; when the optical lens 1 is in the second shooting mode, the camera module 30 is also in the second shooting mode. It can be understood that in the camera module 30, the outgoing light emitted by the optical lens 1 can be received by the photosensitive element 2 and imaged.

[0150] The first lens group G1 can include at least one lens. The first lens group G1 has positive refractive power. The first lens group G1 can not change the direction of the optical axis, and can converge light rays, thereby facilitating focusing of the optical lens 1. The first lens group G1 can include one lens. The first lens group G1 can also include multiple lenses, for example, 2, 3, 4, etc. When the first lens group G1 has multiple lenses, the different combinations of materials of the multiple lenses can be used to eliminate or reduce aberrations; the combination of lenses with positive refractive power and lenses with negative refractive power can also be used to eliminate or reduce aberrations, but the total refractive power of the first lens group G1 is positive. The number of lenses of the first lens group G1 is not strictly limited in the present embodiment.

[0151] The second lens group G2 can include at least one lens. The second lens group G2 has positive refractive power. The second lens group G2 can not change the direction of the optical axis, and can converge light rays, thereby facilitating focusing of the optical lens 1. The second lens group G2 can include one lens. The second lens group G2 can also include multiple lenses, for example, 2, 3, 4, etc. When the second lens group G2 has multiple lenses, the different combinations of materials of the multiple lenses can be used to eliminate or reduce aberrations; the combination of lenses with positive refractive power and lenses with negative refractive power can also be used to eliminate or reduce aberrations, but the total refractive power of the second lens group G2 is positive. The number of lenses of the second lens group G2 is not strictly limited in the present embodiment.

[0152] The focal length of the second lens group G2 can be different from the focal length of the first lens group G1. Thus, the focusing ability of the second lens group G2 and the first lens group G1 for light rays is different, thereby facilitating forming optical systems with different focal lengths by using the first lens group G1 and the second lens group G2, respectively. In other embodiments, the focal length of the second lens group G2 can be the same as the focal length of the first lens group G1.

[0153] The third lens group G3 can include at least one lens. The third lens group G3 has negative refractive power. The third lens group G3 can not change the direction of the optical axis, and can diverge light rays, thereby facilitating reducing aberrations of the optical lens 1. The third lens group G3 can include one lens. The third lens group G3 can also include multiple lenses, for example, 2, 3, 4, etc. When the third lens group G3 has multiple lenses, the different combinations of materials of the multiple lenses can be used to eliminate or reduce aberrations; the combination of lenses with positive refractive power and lenses with negative refractive power can also be used to eliminate or reduce aberrations, but the total refractive power of the third lens group G3 is negative. The number of lenses of the third lens group G3 is not strictly limited in the present embodiment.

[0154] The fourth lens group G4 can include at least one lens. The fourth lens group G4 has positive refractive power. The fourth lens group G4 can not change the direction of the optical axis, and can focus light, further facilitating focusing of the optical lens 1. The fourth lens group G4 can include one lens. The fourth lens group G4 can also include multiple lenses, for example, 2, 3, 4, etc. When the fourth lens group G4 has multiple lenses, the different combinations of materials of the multiple lenses can be used to eliminate or reduce aberration; or the combination of lenses with positive refractive power and lenses with negative refractive power can be used to eliminate or reduce aberration, but the total refractive power of the fourth lens group G4 is positive. The number of lenses of the fourth lens group G4 is not strictly limited in this embodiment.

[0155] The fifth lens group G5 can include at least one lens. The fifth lens group G5 has negative refractive power. The fifth lens group G5 can not change the direction of the optical axis, and can diverge light, thereby facilitating reduction of aberration of the optical lens 1. The fifth lens group G5 can include one lens. The fifth lens group G5 can also include multiple lenses, for example, 2, 3, 4, etc. When the fifth lens group G5 has multiple lenses, the different combinations of materials of the multiple lenses can be used to eliminate or reduce aberration; or the combination of lenses with positive refractive power and lenses with negative refractive power can be used to eliminate or reduce aberration, but the total refractive power of the fifth lens group G5 is negative. The number of lenses of the fifth lens group G5 is not strictly limited in this embodiment.

[0156] The third lens group G3, the fourth lens group G4, and the fifth lens group G5 can be arranged in order from the object side to the image side. For example, the optical axes of the third lens group G3, the fourth lens group G4, and the fifth lens group G5 can be collinear to facilitate imaging of the optical lens 1. It is easy to understand that the first lens group G1 and the second lens group G2 cannot occupy the same position, and the distance between the first lens group G1 and the third lens group G3 is different from the distance between the second lens group G2 and the third lens group G3 in the direction of the optical axis of the third lens group G3, and the distance between the first lens group G1 and the third lens group G3 can be closer.

[0157] The first lens group G1 can receive incident object light and cooperate with the third lens group G3, the fourth lens group G4, and the fifth lens group G5 to refract the incident object light, thereby imaging. The second lens group G2 can also receive incident object light and cooperate with the third lens group G3, the fourth lens group G4, and the fifth lens group G5 to refract the incident object light, thereby imaging. That is, the first lens group G1 and the second lens group G2 can respectively receive object light to image, and because their focal lengths are different, they generally do not receive object light and image at the same time.

[0158] The light path switching element 5 can have light guiding capability to realize the propagation of light. The light path switching element 5 is located on the object side of the third lens group G3. The light path switching element 5 can be used to receive the light beams from the first lens group G1 and propagate to the third lens group G3. The light path switching element 5 can also be used to receive the light beams from the second lens group G2 and propagate to the third lens group G3. The light path switching element 5 can include at least one element that changes the direction of light propagation, such as a prism, a mirror, etc.

[0159] To make the first lens group G1 and the second lens group G2 respectively used for imaging, the light path switching element 5 is provided to act as a switching switch in the light path. The first lens group G1 and the second lens group G2 respectively act as the front lens group of the light path switching element 5 and can form two upstream light paths of the light path switching element 5. The third lens group G3, the fourth lens group G4 and the fifth lens group G5 can collectively act as the rear lens group of the light path switching element 5. The light path on which the rear lens group is located is regarded as a downstream light path. The multiple upstream light paths are connected to the object side of the light path switching element 5 in parallel, and the downstream light path is connected to the image side of the light path switching element 5. The light path switching element 5 is used to make one of the two upstream light paths and the downstream light path conduct to each other, so that the light in the upstream light path is transmitted to the downstream light path. That is, by operating the light path switching element 5, any one of the two upstream light paths and the downstream light path can be connected to each other, and the remaining upstream light paths and the downstream light path are disconnected from each other. In other words, the light path switching element 5 can transmit light from any one of the front lens groups to the rear lens group, and the light from the remaining front lens groups cannot be transmitted to the rear lens group. The switching of the light path can be realized by moving the position of the light path switching element 5 in the light path, rotating the angle of the light path switching element 5 in the light path, replacing different light path switching elements 5 into the light path, etc.

[0160] Under the switching action of the light path switching element 5, the optical lens 1 can propagate the light from one of the first lens group G1 and the second lens group G2 to the rear lens group (such as the third lens group G3, the fourth lens group G4 and the fifth lens group G5). That is, the optical lens 1 can receive the object light through different front lens groups to form images, and the optical lens 1 has different effective focal lengths when imaging through different front lens groups, that is, the optical lens 1 has different effective focal lengths when the rear lens group receives light from different front lens groups, thereby enabling the optical lens 1 to have optical zoom capability.

[0161] Thus, the optical lens 1 can have a first shooting mode and a second shooting mode. When the optical lens 1 is in the first shooting mode, the light path switching element 5 is located on the image side of the first lens group G1 and on the object side of the third lens group G3, and the optical lens 1 has a first focal length; when the optical lens 1 is in the second shooting mode, the light path switching element 5 is located on the image side of the second lens group G2 and on the object side of the third lens group G3, and the optical lens 1 has a second focal length.

[0162] The optical lens 1 is equivalent to multiplexing the third lens group G3, the fourth lens group G4 and the fifth lens group G5 in the first shooting mode and the second shooting mode. Since the focal length and the surface type of the third lens group G3, the fourth lens group G4 and the fifth lens group G5 are unchanged, and since the first focal length and the second focal length are different, the distance between the first lens group G1 and the third lens group G3 and the distance between the second lens group G2 and the third lens group G3 are different, so the positions of the third lens group G3, the fourth lens group G4 and / or the fifth lens group G5 need to be adjusted to correct the light path, so that the imaging surface of the optical lens 1 is the same in the first shooting mode and the second shooting mode, thereby facilitating the imaging of the optical lens 1, thereby realizing the focusing of the optical lens 1, and having the same image height in the first shooting mode and the second shooting mode to realize lossless zoom.

[0163] In the process of switching the optical lens 1 from the first shooting mode to the second shooting mode, at least two of the third lens group G3, the fourth lens group G4 and the fifth lens group G5 move along the optical axis of the third lens group G3, and the optical lens 1 switches from the first focal length to the second focal length. Similarly, in the process of switching the optical lens 1 from the second shooting mode to the first shooting mode, at least two of the third lens group G3, the fourth lens group G4 and the fifth lens group G5 move along the optical axis of the third lens group G3, and the moving direction can be opposite to that when the optical lens 1 switches from the first shooting mode to the second shooting mode, and the optical lens 1 switches from the first focal length to the second focal length. At this time, by moving at least two lens groups, the optical path can have a strong adjustment capability, which is conducive to making the movable lens group have a smaller moving distance, thereby being conducive to shortening the total optical length of the optical lens 1, and further being conducive to the miniaturization design of the optical lens 1.

[0164] For example, the total optical length of the optical lens 1 can be less than 32 mm, but it is not strictly limited thereto.

[0165] In the embodiment, different lens groups are arranged to receive object light, so that different lens groups have different focal lengths; by arranging the light path switching element 5, the optical lens 1 receives object light through the first lens group G1 and the second lens group G2 respectively, and propagates to the third lens group G3, the fourth lens group G4 and the fifth lens group G5 for imaging respectively. It is equivalent to integrating two lenses into one optical lens 1, and making the optical lens 1 have two different focal lengths, so that the optical lens 1 can use different focal lengths (i.e. use the first lens group G1 or the second lens group G2, enter the first shooting mode or the second shooting mode) for shooting in different shooting scenes, realize different focal length optical zoom, i.e. realize lossless optical zoom, which is beneficial to obtain higher quality images, the scene adaptability of the optical lens 1 is better, and the shooting experience of the user is greatly improved; and multiple camera modules 30 do not need to be arranged in the electronic device to realize shooting with different focal lengths, thereby reducing the volume of the camera module 30.

[0166] By reasonably configuring the optical power of the first lens group G1, the second lens group G2, the third lens group G3, the fourth lens group G4 and the fifth lens group G5, the lens groups with optical power cooperate, which is beneficial to correct the aberration of the optical lens 1 during imaging; and by moving at least two lens groups, the light path can be adjusted with strong ability, which is beneficial to make the movable lens group have a smaller moving distance, thereby being beneficial to further shorten the total optical length of the optical lens 1, and further being beneficial to the miniaturization design of the optical lens 1, i.e. realizing the design of the optical lens 1 with zooming capability in small size, thereby being beneficial to reduce the volume of the camera module 30.

[0167] In some embodiments, the light path switching element 5 is used to change the propagation direction of the optical axis; the third lens group G3, the fourth lens group G4 and the fifth lens group G5 are arranged along the optical axis direction of the third lens group G3, and the second lens group G2 is located on the side away from the third lens group G3 of the first lens group G1 along the optical axis direction of the third lens group G3.

[0168] In some embodiments, the light path switching element 5 is used to change the propagation direction of the optical axis; the third lens group G3, the fourth lens group G4 and the fifth lens group G5 are arranged along the optical axis direction of the third lens group G3, and the second lens group G2 is located on the side away from the third lens group G3 of the first lens group G1 along the optical axis direction of the third lens group G3.

[0169] When the optical lens 1 is in the first shooting mode, the light path switching element 5 is located at the image side of the first lens group G1 along the second direction; the light path switching element 5 is used to change the propagation direction of the light beam from the optical axis direction of the first lens group G1 to the optical axis direction of the third lens group G3, that is, from the first direction to the second direction. At this time, the light path switching element 5 can be located at the intersection of the optical axis of the first lens group G1 and the optical axis of the third lens group G3. The light path switching element 5 transmits the light rays emitted by the first lens group G1 to the third lens group G3. When the optical lens 1 is in the second shooting mode, the light path switching element 5 is located at the image side of the second lens group G2; the light path switching element 5 is used to change the propagation direction of the light beam from the optical axis direction of the second lens group G2 to the optical axis direction of the third lens group G3, that is, from the first direction to the second direction. At this time, the light path switching element 5 is located at the intersection of the optical axis of the second lens group G2 and the optical axis of the third lens group G3. The light path switching element 5 transmits the light rays emitted by the second lens group G2 to the third lens group G3. By moving the light path switching element 5 along the second direction, the optical lens 1 is switched between the first shooting mode and the second shooting mode.

[0170] Wherein, the positions of the first lens group G1, the second lens group G2, the third lens group G3, the fourth lens group G4 and the fifth lens group G5 in the first direction can be relatively fixed. Wherein, the light path switching element 5 can change the propagation direction of the light beam by reflection. The number of reflections of the light beam at the light path switching element 5 can be 1, or 2, 3, etc. Wherein, the movement of the light path switching element 5 can be realized by a voice coil motor or the like structure, which is not strictly limited in the present embodiment.

[0171] In the present example, the arrangement direction of the first lens group G1 and the second lens group G2, the arrangement direction of the third lens group G3, the fourth lens group G4, the fifth lens group G5 and the movement direction of the light path switching element 5 are the same, by setting the structure of the optical lens 1, and by moving the light path switching element 5 to realize the switching between the first shooting mode and the second shooting mode, the moving components are less, which is conducive to improving the accuracy of the movement of the optical lens 1, and making the structure of the optical lens 1 simpler, which is conducive to improving the reliability of the optical lens 1.

[0172] In other embodiments, the light path switching element 5 can realize the switching between the first shooting mode and the second shooting mode by other ways. For example, the light path switching element 5 can be respectively connected to the first lens group G1 and the second lens group G2 by rotating, so as to realize the switching between the first shooting mode and the second shooting mode.

[0173] Please refer to FIG. 4 and FIG. 5, FIG. 5 is a structural schematic diagram of the camera module 30 in the first shooting mode and the second shooting mode.

[0174] In some embodiments, during the process of switching the optical lens 1 from the first shooting mode to the second shooting mode, the third lens group G3 and the fifth lens group G5 are respectively moved along the optical axis direction of the third lens group G3, and the optical lens 1 is switched from the first focal length to the second focal length. At this time, the third lens group G3 and the fifth lens group G5 are arranged to be movable, and cooperate with the light path switching element 5 to enable the optical lens 1 to change to the set focal length. Since the third lens group G3, the fourth lens group G4 and the fifth lens group G5 are arranged in sequence, the third lens group G3 and the fifth lens group G5 are far apart, and the two sides of the third lens group G3 and the fifth lens group G5 are easy to have a larger space. Therefore, when the driving components of the third lens group G3 and the fifth lens group G5 are arranged, the larger space between the third lens group G3 and the fifth lens group G5 makes the design of the driving components easier, and the installation of the driving components is easy. In addition, the larger space on both sides of the third lens group G3 and the fifth lens group G5 enables the third lens group G3 and the fifth lens group G5 to have a larger moving space.

[0175] It can be understood that at this time, the first lens group G1, the second lens group G2 and the fourth lens group G4 in the optical lens 1 can all be relatively fixed, but it is not strictly limited thereto.

[0176] It can be understood that during the process of switching the optical lens 1 from the first shooting mode to the second shooting mode, that is, during the zooming process, the third lens group G3 and the fifth lens group G5 can move towards the same direction.

[0177] In some examples, the focal length of the first lens group G1 is smaller than the focal length of the second lens group G2. Since the second lens group G2 is away from the third lens group G3 in the second direction, in the second direction, the distance between the second lens group G2 and the third lens group G3 is greater than the distance between the first lens group G1 and the third lens group G3.

[0178] Among them, since the focal length of the first lens group G1 is smaller than the focal length of the second lens group G2. It is easier to make the optical lens 1 have different focal lengths in the first shooting mode and the second shooting mode.

[0179] Among them, the first lens group G1 is arranged on the side close to the third lens group G3, and the second lens group G2 is arranged on the side away from the third lens group G3. The first lens group G1 can make full use of the distance between the second lens group G2 and the third lens group G3 in the second direction, so that it is basically unnecessary to additionally arrange a space for the first lens group G1.

[0180] The second focal length of the second shooting mode can be greater than the first focal length of the first shooting mode. At this time, the second focal length is greater than the first focal length, the focal length of the second lens group G2 is greater than the focal length of the first lens group G1, the second lens group G2 is closer to the third lens group G3 than the first lens group G1, that is, the focal length of the first lens group G1, the focal length of the second lens group G2, and the first focal length and the second focal length are more suitable, and the focal length of the first lens group G1 and the focal length of the second lens group G2 are more suitable for the actual spatial arrangement, which is convenient for compatibility of the rear lens group and is conducive to simplifying the design of the optical lens 1.

[0181] For example, the optical lens 1 in the second shooting mode and the optical lens 1 in the first shooting mode can both be long-focus lenses, but the focal length of the second shooting mode is greater than that of the first shooting mode, so that the optical lens 1 can adapt to more shooting environments and have higher image quality. In some other embodiments, the optical lens 1 in the second shooting mode can be a long-focus lens, and the optical lens 1 in the first shooting mode can be a wide-angle lens.

[0182] In this example, the relative sizes of the focal lengths of the first lens group G1 and the second lens group G2 are set by the positions of the first lens group G1 and the second lens group G2, which is conducive to further rational use of space and rational allocation of the focal length of the lens group on the object side of the light path switching element 5, and is conducive to reducing the design difficulty of the optical lens 1.

[0183] For example, as shown in FIG. 5, when the optical lens 1 is in the first shooting mode, the light path switching element 5 is located on the image side of the first lens group G1 and on the object side of the third lens group G3, and the external scene light can be incident by the first lens group G1, passes through the light path switching element 5, so that the propagation direction of the light changes from the optical axis direction of the first lens group G1 to the optical axis direction of the third lens group G3, and then the light passes through the third lens group G3, the fourth lens group G4, and the fifth lens group G5 in sequence. At this time, the light path switching element 5 is in the first position, the third lens group G3 is in the second position, and the fifth lens group G5 is in the third position.

[0184] When the optical lens 1 is in the second shooting mode, the light path switching element 5 is located on the image side of the second lens group G2 and on the object side of the third lens group G3, and the external scene light can be incident by the second lens group G2, passes through the light path switching element 5, so that the propagation direction of the light changes from the optical axis direction of the second lens group G2 to the optical axis direction of the third lens group G3, and then the light passes through the third lens group G3, the fourth lens group G4, and the fifth lens group G5 in sequence. At this time, the light path switching element 5 is in the fourth position, the third lens group G3 is in the fifth position, and the fifth lens group G5 is in the sixth position. The light path switching element 5 and the third lens group G3 have a first distance a.

[0185] The optical lens 1 can be switched between the first shooting mode and the second shooting mode. For example, the optical lens 1 is switched from the first shooting mode to the second shooting mode, the light path switching element 5 is moved from the first position to the fourth position, the third lens group G3 is moved from the second position to the fifth position, and the fifth lens group G5 is moved from the third position to the sixth position. The distance moved by the light path switching element 5 is P.

[0186] For example, the optical lens 1 can satisfy 0.2 < P / TTL < 0.3. The total optical length of the optical lens 1 is TTL. At this time, by setting the appropriate moving distance of the light path switching element 5, the light path switching element 5 can receive the light beams of the first lens group G1 and the second lens group G2 by moving, respectively, and occupy a small length space, thereby providing sufficient accommodation space and moving space for the third lens group G3, the fourth lens group G4, the fifth lens group G5 and the like. The total optical length TTL of the optical lens 1 can be less than 35 mm. Further, the total optical length TTL can satisfy TTL < 32 mm. The value of the total optical length TTL can be 28 mm, 29 mm, 30 mm, 31 mm, 31.5 mm, 31.54 mm or 32 mm. It can be understood that the total optical length of the optical lens 1 in the second shooting mode is longer, and has a greater impact on the physical length of the optical lens. Therefore, the total optical length TTL in the example refers to the total optical length of the optical lens 1 in the second shooting mode.

[0187] For example, the optical lens 1 can satisfy a < P. At this time, the position of the third lens group G3 in the second shooting mode is partially overlapped with the position of the light path switching element 5 in the first shooting mode, the third lens group G3 intrudes into the position of the light path switching element 5 in the first shooting mode, and the space is multiplexed with respect to the overlap space, thereby saving the space in the optical axis direction of the third lens group G3, which is beneficial to reduce the total optical length TTL, thereby facilitating the miniaturization design of the optical lens 1, and without affecting the zoom performance of the optical lens 1.

[0188] For example, the first distance a can be in the range of 5 mm to 9 mm. For example, the first distance a can be 5 mm, 6 mm, 6.764 mm, 7 mm, 7.5742 mm, 8 mm, 8.202 mm or 9 mm.

[0189] For example, the distance moved by the light path switching element 5 can be in the range of 7 mm to 10 mm. For example, P can be 7 mm, 7.7 mm, 8 mm, 8.849 mm, 8.95 mm, 9 mm, 9.2 mm or 10 mm.

[0190] In some examples, the first focal length F1 can satisfy: 15mm < F1 < 19mm. F1 is the first focal length. For example, F1 can take a value of 15mm, 16mm, 16.49mm, 17mm, 17.05mm, 17.06mm, 17.10mm, 18mm or 19mm. Further, the optical lens 1 can satisfy: 16 < F1 < 18.

[0191] In some examples, the second focal length F2 can satisfy: 27mm < F2 < 31mm. F2 is the second focal length. For example, F2 can take a value of 27mm, 28.09mm, 28.1mm, 28.15mm, 29mm, 29.50mm, 30mm or 31mm. Further, the optical lens 1 can satisfy: 28mm < F2 < 30mm. In some embodiments, the third lens group G3 moves a distance of SK1 during the switching of the optical lens 1 from the first shooting mode to the second shooting mode, the fifth lens group G5 moves a distance of SK2 during the switching of the optical lens 1 from the first shooting mode to the second shooting mode, the focal length of the third lens group G3 is f3, the focal length of the fifth lens group G5 is f5, the first focal length is F1, the second focal length is F2, the zoom ratio of the optical lens 1 is M, M = F2 / F1; the optical lens 1 satisfies formula (1): 5 < (|f3 / SK1| + |f5 / SK2|) / M < 20.

[0192] Wherein, the SK1, SK2, f3, f5, F1, F2 of the optical lens 1 are related to each other, and the above parameters also affect the total optical length TTL of the optical lens 1. In order to solve the problem of too large volume of the camera module 30, after the zoom ratio M is determined, the values of each parameter can be designed to make the TTL design smaller.

[0193] Wherein, in formula (1), when the system focal length of the optical lens 1 changes, the contribution of the zoom element (such as the third lens group G3, the fifth lens group G5) to the total focal length is related to the focal length of the zoom element and its position. By reasonably designing M and reasonably allocating f3 and f5, when the optical lens 1 satisfies the above formula (1), the optical lens 1 can be designed as a large zoom ratio lens with small size.

[0194] It should be understood that, in formula (1), the closer the value of (|f3 / SK1|+|f5 / SK2|) / M is to the end value 5, the smaller the total optical length TTL of the optical lens 1, and the easier it is to achieve the miniaturization design of the optical lens 1; the closer the value of (|f3 / SK1|+|f5 / SK2|) / M is to the end value 20, the relatively larger the TTL of the optical lens 1, but the design difficulty is smaller. For example, 5<(|f3 / SK1|+|f5 / SK2|) / M<7; or 10<(|f3 / SK1|+|f5 / SK2|) / M<11; or 14<(|f3 / SK1|+|f5 / SK2|) / M<15. For example, the value of (|f3 / SK1|+|f5 / SK2|) / M can be 5, 6.76, 7.13, 8, 9, 10.08, 11, 12, 13, 14.37, 15, 16, 17, 18, 19, 20.

[0195] In some examples, the optical lens 1 can satisfy: 0.15<f4 / F2<0.3. Wherein, f4 is the focal length of the fourth lens group G4. At this time, since the position of the fourth lens group G4 is relatively fixed, the third lens group G3 and the fifth lens group G5 are movable lens groups, and thus, the focal length of the fourth lens group G4 is reasonably distributed, thereby facilitating the further reasonable distribution of the focal lengths of the third lens group G3 and the fifth lens group G5, and thus simplifying the design of the optical lens 1. For example, the value of the ratio f4 / F2 of the focal length f4 of the fourth lens group G4 to the second focal length F2 can be 0.15, 0.17, 0.19, 0.21, 0.23, 0.24, 0.25, 0.26, 0.28, 0.30.

[0196] In some examples, the optical lens 1 can satisfy: 1<f2 / f1<2. In this example, the optical lens 1 multiplexes the third lens group G3, the fourth lens group G4 and the fifth lens group G5 in the first shooting mode and the second shooting mode, and by reasonably setting the zoom ratio M, the first lens group G1 and the second lens group G2 can have a larger zoom ratio, and can better compatible with the third lens group G3, the fourth lens group G4 and the fifth lens group G5, thereby reducing the design difficulty, and also enabling the optical lens 1 to have a better imaging effect. For example, the value of the ratio f2 / f1 of the focal length f2 of the second lens group G2 to the focal length f1 of the first lens group G1 can be 1, 1.1, 1.2, 1.32, 1.44, 1.45, 1.48, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0. Further, the value of the ratio f2 / f1 of the focal length f2 of the second lens group G2 to the focal length f1 of the first lens group G1 can also be in the range of 1 to 1.5.

[0197] In some examples, the optical lens 1 can satisfy: 0.3 <-f3 / F2<0.4. Wherein, since the optical power of the third lens group G3 is negative, the focal length of the third lens group G3 is also negative. At this time, since the optical lens 1 has a small total optical length TTL, the space provided for the third lens group G3 to move during zooming or focusing is limited, and therefore, setting a suitable focal length of the third lens group G3 is conducive to making the third lens group G3 have a suitable moving distance, so as to be better applied in the optical lens 1. For example, the ratio of the reciprocal of the focal length f3 of the third lens group G3 to the second focal length F2 can be 0.31, 0.32, 0.33, 0.34, 0.35, 0.36, 0.37, 0.38, 0.39, or 0.4.

[0198] In some examples, the optical lens 1 can satisfy: 0.3 <-f3 / F2<0.4. Wherein, since the optical power of the third lens group G3 is negative, the focal length of the third lens group G3 is also negative. At this time, since the optical lens 1 has a small total optical length TTL, the space provided for the third lens group G3 to move during zooming or focusing is limited, and therefore, setting a suitable focal length of the third lens group G3 is conducive to making the third lens group G3 have a suitable moving distance, so as to be better applied in the optical lens 1. For example, the ratio of the reciprocal of the focal length f3 of the third lens group G3 to the second focal length F2 can be 0.31, 0.32, 0.33, 0.34, 0.35, 0.36, 0.37, 0.38, 0.39, or 0.4.

[0199] It can be understood that the above-mentioned limits on the ratio of the focal length f4 of the fourth lens group G4 to the second focal length F2, the ratio of the focal length f2 of the second lens group G2 to the focal length f1 of the first lens group G1, the ratio of the focal length f3 of the third lens group G3 to the second focal length F2, and the ratio of the focal length f5 of the fifth lens group G5 to the second focal length F2 can exist independently of each other or can be combined with each other. When the above-mentioned multiple ratio ranges are combined with each other, the optical lens 1 can obtain better aperture value, focusing ability, imaging quality and processability; wherein, in some embodiments, the camera module 30 can realize both long shot and macro shot through the optical lens 1, for example, the nearest object distance of macro shot can be 10 cm, 5 cm or 3 cm. For example, in the first shooting mode, macro shot can be realized by further focusing.

[0200] In some embodiments, the optical lens 1 can satisfy: 1 < M < 2. Wherein, the zoom ratio M is the ratio of the second focal length F2 and the first focal length F1. Wherein, the first focal length F1 and the second focal length F2 in the present embodiment are effective focal lengths, the zoom of the present embodiment is lossless optical zoom, and the equivalent zoom ratio is the same as the effective zoom ratio. In the present embodiment, a suitable zoom ratio M is set, thereby balancing the relationship between the smaller optical total length TTL and the larger zoom ratio M, so that the design of the optical lens 1 is easier. For example, the value of the zoom ratio M can be 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.65, 1.7, 1.79, 1.8, 1.9, 2.0. Further, the value of the zoom ratio M can be in the range of 1.5 to 2.

[0201] In some embodiments, the optical lens 1 can satisfy: F2 > F1, and 15 < TTL / M < 20. Wherein, M = F2 / F1. Wherein, when designing the optical lens 1, the closer the TTL / M is to the endpoint value 15, the larger the zoom ratio M of the optical lens 1 can be under a certain optical total length TTL; or, the smaller the optical total length TTL of the optical lens 1 can be under a certain zoom ratio M. The closer the TTL / M is to the endpoint value 20, the lower the difficulty of designing the optical lens 1. By reasonably setting the optical total length TTL and the zoom ratio M, the optical lens 1 has a suitable structure and performance. For example, the optical lens 1 can also satisfy: F2 > F1, 15 < TTL / M < 16, or 16 < TTL / M < 17, or 17 < TTL / M < 18, or 18 < TTL / M < 19, or 19 < TTL / M < 20. For example, the ratio TTL / M of the optical total length TTL and the zoom ratio M can be 15, 16, 16.76, 17, 18, 18.18, 19, 19.09, 19.12, 20.

[0202] Further, the optical lens 1 can satisfy: F2 / TTL > 0.8. At this time, by reasonably setting the second focal length F2 and the optical total length TTL, the optical lens 1 can have a larger second focal length F2 under a certain optical total length TTL, thereby making the optical lens 1 have stronger long-focus capability; or, the optical lens 1 can have a smaller optical total length TTL under a certain second focal length F2, thereby making the optical lens 1 have a smaller size. For example, the ratio F2 / TTL of the second focal length F2 and the optical total length TTL can be 0.8, 0.89, 0.94, 0.98.

[0203] In some embodiments, the optical lens 1 satisfies: 6 < (F1+F2) / IMH < 10. Wherein, IMH is the half image height of the optical lens 1. At this time, by reasonably designing the first focal length F1, the second focal length F2 and the half image height IMH, the optical lens 1 has a larger first focal length F1, a second focal length F2, and a suitable half image height IMH, so that the three parameters are balanced. It can be understood that the photosensitive element 2 needs to be adapted to the half image height IMH, and therefore a suitable half image height is conducive to selecting a photosensitive element 2 of a suitable size. By designing a suitable first focal length F1, a second focal length F2 and a half image height IMH, an equivalent focal length corresponding to the first focal length F1 and an equivalent focal length corresponding to the second focal length F2 can be obtained.

[0204] For example, the ratio of the sum of the first focal length F1 and the second focal length F2 to the half image height (F1+F2) / IMH can be 6, 7, 8, 8.18, 8.20, 8.82, 8.98, 9, 10. Further, the ratio of the sum of the first focal length F1 and the second focal length F2 to the half image height (F1+F2) / IMH can be in the range of 8 to 9.

[0205] For example, the half image height IMH can satisfy: 4mm < IMH < 7mm. For example, the half image height IMH can take a value of 4mm, 5mm, 5.12mm, 5.52mm, 6mm or 7mm. Further, the half image height IMH can satisfy: 5mm < IMH < 6mm.

[0206] In some embodiments, the optical lens 1 is configured such that at least one of the third lens group G3, the fourth lens group G4 and the fifth lens group G5 moves along the optical axis during the focusing of the optical lens 1. For example, one of the third lens group G3, the fourth lens group G4 and the fifth lens group G5 can move to perform automatic focusing. Two or three of them can also move to perform automatic focusing. The movement of the lens group can be achieved by a voice coil motor or other driving components, thereby achieving automatic focusing.

[0207] At this time, by moving at least one of the third lens group G3, the fourth lens group G4 and the fifth lens group G5 to focus, the optical lens 1 can clearly image from macro to infinity (i.e. the optical lens 1 can be used for long focal length shooting and macro shooting), so that the optical lens 1 has a larger shooting distance range and a wider application range.

[0208] For example, the optical lens 1 can be further configured such that, during focusing of the optical lens 1, the third lens group G3 and the fifth lens group G5 move along the optical axis. At this time, since the third lens group G3 and the fifth lens group G5 can be moved to zoom the optical lens 1, the driving components for the third lens group G3 and the fifth lens group G5 can be reused when the third lens group G3 and the fifth lens group G5 are moved during focusing, that is, the driving components during zooming and focusing can be the same, thereby facilitating simplification of the driving structure of the optical lens 1 and miniaturization of the optical lens 1.

[0209] In some embodiments, the camera module 30 can also have an anti-shake function.

[0210] For example, the photosensitive element 2 is configured to move along a direction perpendicular to the optical axis of the photosensitive element 2 during anti-shake of the camera module 30. The photosensitive element 2 can be driven by an anti-shake motor to achieve anti-shake, and the structure of the photosensitive element 2 for achieving anti-shake is not strictly limited in the present embodiment.

[0211] At this time, by moving the photosensitive element 2, the light incident on the photosensitive element 2 can be kept relatively stable with the photosensitive element 2, thereby reducing the shaking of the imaging and improving the imaging quality of the camera module 30.

[0212] For example, during anti-shake of the camera module 30, the photosensitive element 2 can also rotate around its optical axis to achieve anti-shake.

[0213] In other examples, the camera module 30 can also achieve anti-shake by driving the light path switching element 5 to move. For example, the light path switching element 5 can rotate around the optical axis of the incident light (also called head shaking), or rotate around the perpendicular direction of the incident light and the outgoing light (also called nodding). The anti-shake mode of the light path switching element 5 is not strictly limited in the present embodiment.

[0214] In some embodiments, referring to FIG. 5, the optical lens 1 can further include a light path reflection element 6 located on the image side of the fifth lens group G5. The light path reflection element 6 is used to change the direction of the optical axis of the fifth lens group G5 to a third direction, and the third direction has an angle with the direction of the optical axis of the fifth lens group G5.

[0215] For example, the third direction can be parallel to the direction of the optical axis of the first lens group G1. The light path reflection element 6 can have an incident surface 61, a reflection surface 62, and an outgoing surface 63. The incident surface 61 can be perpendicular to the direction of the optical axis of the third lens group G3, and the outgoing surface 63 is perpendicular to the third direction (i.e., the outgoing surface 63 is perpendicular to the direction of the optical axis of the first lens group G1). The outgoing surface 63 is located on the same side of the optical axis of the third lens group G3 as the first lens group G1.

[0216] The highest point of the optical lens 1 in the direction of the optical axis of the first lens group G1 is easily affected by the first lens group G1 or the second lens group G2. At this time, the light rays are emitted by the exit surface 63 of the light path reflection element 6 in the third direction, and since the exit surface 63 and the first lens group G1 are located on the same side of the optical axis of the third lens group G3, the imaging surface is also located on the same side of the optical axis of the third lens group G3; it is equivalent to reusing the height space occupied by the first lens group G1 in the direction of its optical axis, so that no additional space needs to be reserved for the imaging surface and the photosensitive element 2, thereby facilitating the position setting of the photosensitive element, thereby facilitating the reduction of the height of the optical lens 1 in the third direction, and facilitating the miniaturization design.

[0217] In this embodiment, by setting the light path reflection element 6, the light path can be folded to reduce the total optical length TTL of the optical lens 1, thereby facilitating the miniaturization of the optical lens 1; and the light path reflection element 6 can also facilitate the position setting of the imaging surface, thereby facilitating the position setting of the photosensitive element 2 in the camera module 30, and also facilitating the setting of a larger photosensitive element 2, thereby making the imaging quality higher.

[0218] It can be understood that in the camera module 30, the photosensitive element 2 can be perpendicular to the third direction to better image. At this time, the light beams are emitted by the light path reflection element 6 of the optical lens 1 and received by the photosensitive element 2, thereby imaging.

[0219] In other embodiments, the third direction can have an angle with the optical axis direction of the fifth lens group G5 and the optical axis direction of the first lens group G1. At this time, the photosensitive element 2 is perpendicular to the third direction, and the photosensitive element 2 is equivalent to being inclined. This embodiment does not strictly limit the structure of the light path reflection element 6.

[0220] Some specific and non-limiting examples of the present application will be described in more detail below through four embodiments combined with Figures 6 to 17c.

[0221] Embodiment one

[0222] Please refer to Table 1a, Table 1b and Table 1c, wherein Table 1a is the values of the radius of curvature (R), interval (D), refractive index (587.56nm wavelength), Abbe number, half aperture and conic coefficient (k) of each lens and reflective element of the optical lens 1 of the camera module 30 shown in Figure 4 in a possible embodiment when the camera module 30 is in the first shooting mode and the second shooting mode. When the camera module 30 is in the first shooting mode, the parameters of surface number 1a to surface number 20 are shown. When the camera module 30 is in the second shooting mode, only the parameters of surface number 1b to surface number 4b are shown; it can be understood that the parameters of surface number 5 to surface number 20 of the camera in the second shooting mode can refer to the parameters of the first shooting mode, and are not repeated. The interval includes the thickness of the structure itself and the spacing between the structures. Table 1b and Table 1c are the aspheric coefficients of each lens of the optical lens 1 of the camera module 30 shown in Figure 4 in a possible embodiment.

[0223] Table 1a

[0224] Table 1b

[0225] Table 1c

[0226] The aspheric surface 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:

[0227] Wherein z is the relative distance of the point on the aspheric surface with a distance of r from the optical axis to the tangent intersection of the aspheric surface on the optical axis; r is the vertical distance of the 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 1b and Table 1c. 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 and the ninth lens L9 are all aspheric lenses.

[0228] Referring to Table 1d, Table 1d is the basic parameters of the camera module 30 shown in FIG. 4 in a possible embodiment. In Table 1d, F.no is the aperture value, I MH is the half image height, TTL is the total optical length of the optical lens 1, SK1 is the distance that the third lens group G3 moves in the process of switching the optical lens 1 from the first shooting mode to the second shooting mode, SK2 is the distance that the fifth lens group G5 moves in the process of switching the optical lens 1 from the first shooting mode to the second shooting mode, f1 is the focal length of the first lens group G1, f2 is the focal length of the second lens group G2, f3 is the focal length of the third lens group G3, f4 is the focal length of the fourth lens group G4, f5 is the focal length of the fifth lens group G5, F1 is the focal length of the optical lens 1 in the first shooting mode, F2 is the focal length of the optical lens 1 in the second shooting mode, P is the moving distance of the light path switching element 5 in the process of switching the optical lens 1 from the first shooting mode to the second shooting mode, and a is the first distance between the light path switching element 5 and the third lens group G3 in the second shooting mode. The values of f1, f2, f3, f4, f5, F1 and F2 are all effective values.

[0229] Table 1d

[0230] In Table 1d, F.no has two values, the first value is the value of the optical lens 1 in the first shooting mode, and the second value is the value of the optical lens 1 in the second shooting mode.

[0231] Referring to FIG. 6, FIG. 6 is a structural schematic diagram of the camera module 30 shown in FIG. 5 in some embodiments in the first shooting mode and the second shooting mode.

[0232] In this embodiment, the optical lens 1 includes the first lens group G1, the second lens group G2, the third lens group G3, the fourth lens group G4, the fifth lens group G5 and the light path switching element 5. The third lens group G3, the fourth lens group G4 and the fifth lens group G5 can be arranged in order along the direction from the object side to the image side.

[0233] When the optical lens 1 is in the first shooting mode, the light path switching element 5 is located on the image side of the first lens group G1 and on the object side of the third lens group G3, and the optical lens 1 has a first focal length.

[0234] When the optical lens 1 is in the second shooting mode, the light path switching element 5 is located on the image side of the second lens group G2 and on the object side of the third lens group G3, and the optical lens 1 has a second focal length.

[0235] In the process of switching the optical lens 1 from the first shooting mode to the second shooting mode, the third lens group G3 and the fifth lens group G5 move in the same direction along the optical axis of the third lens group G3, and the optical lens 1 is switched from the first focal length to the second focal length.

[0236] The first lens group G1 includes one lens, i.e., the first lens L1. The first lens group G1 has positive refractive power. The second lens group G2 includes one lens, i.e., the second lens L2. The second lens group G2 has positive refractive power. The third lens group G3 includes two lenses, i.e., the third lens L3 and the fourth lens L4, which are arranged along the direction from the object side to the image side and can be fixed relative to each other. The fourth lens group G4 includes three lenses, i.e., the fifth lens L5, the sixth lens L6 and the seventh lens L7, which are arranged along the direction from the object side to the image side and can be fixed relative to each other. The fifth lens group G5 includes two lenses, i.e., the eighth lens L8 and the ninth lens L9, which are arranged along the direction from the object side to the image side and can be fixed relative to each other.

[0237] The light path switching element 5 can be a prism. The light path switching element 5 has an entrance surface, a reflection surface and an exit surface. The entrance surface can be perpendicular to the optical axis direction of the first lens group G1, the exit surface can be towards the third lens group G3 and perpendicular to the optical axis direction of the third lens group G3, and the entrance surface and the exit surface can be perpendicular, and the reflection surface can have an angle with the entrance surface and the exit surface.

[0238] The first lens group G1, the second lens group G2 and the fourth lens group G4 can be fixed elements. The third lens group G3, the fifth lens group G5 and the light path switching element 5 can be movable elements, and the moving direction of the three can be parallel to the optical axis direction of the third lens group G3. The light path switching element 5 can receive the light beams from the first lens group G1 and the second lens group G2 by moving the position, so as to switch the optical lens 1 between the first shooting mode and the second shooting mode, and meanwhile, the third lens group G3 and the fifth lens group G5 move synchronously during the switching process to complete the switching between the first shooting mode and the second shooting mode.

[0239] The optical lens 1 further includes a light path reflection element 6. The third direction can be perpendicular to the optical axis direction of the fifth lens group G5. For example, the light path reflection element 6 can be a prism, and the light path reflection element 6 can have an entrance surface 61, a reflection surface 62 and an exit surface 63, and the entrance surface 61 is perpendicular to the exit surface 63. The exit surface 63 of the light path reflection element 6 is located on the same side of the optical axis of the third lens group G3 as the first lens group G1. The light beams can enter the light path reflection element 6 through the entrance surface 61, be reflected by the reflection surface 62, and exit the light path reflection element 6 through the exit surface 63.

[0240] At this time, the light beam can be received by the photosensitive element 2 after being emitted from the light path reflection element 6, and thus, by controlling the emission direction of the light beam from the light path reflection element 6, the emission direction of the light beam from the optical lens 1 is controlled, the influence of the height of the optical lens 1 on the height of the imaging surface is reduced, and thus, a larger photosensitive element 2 can be arranged, and a better imaging effect can be achieved.

[0241] In addition, the photosensitive element 2 of the camera module 30 can be perpendicular to the third direction. For example, the photosensitive element 2 can be arranged opposite to the emission surface 63 of the light path reflection element 6.

[0242] In the embodiment, the third lens group G3 and the fifth lens group G5 are arranged to be movable, and cooperate with the light path switching element 5 to enable the optical lens 1 to change to a set focal length. Since the third lens group G3, the fourth lens group G4, and the fifth lens group G5 are arranged in sequence, the third lens group G3 and the fifth lens group G5 are far apart, and both sides of the third lens group G3 and the fifth lens group G5 have a large space. Therefore, when the driving components of the third lens group G3 and the fifth lens group G5 are arranged, the large space between the third lens group G3 and the fifth lens group G5 makes the design of the driving components easier, and facilitates the installation of the driving components. In addition, the large space on both sides of the third lens group G3 and the fifth lens group G5 enables the third lens group G3 and the fifth lens group G5 to have a large movement space.

[0243] The value of the zoom ratio M is 1.65.

[0244] The value of (|f3 / SK1|+|f5 / SK2|) / M is 6.76.

[0245] The value of the ratio f2 / f1 of the focal length f2 of the second lens group G2 to the focal length f1 of the first lens group G1 is 1.32.

[0246] The value of the ratio TTL / M of the total optical length TTL to the zoom ratio M is 18.18.

[0247] The value of the ratio F2 / TTL of the second focal length F2 to the total optical length TTL is 0.94.

[0248] The value of the ratio (F1+F2) / IMH of the sum of the first focal length F1 and the second focal length F2 to the image height IMH is 8.82.

[0249] The value of the ratio -f3 / F2 of the inverse of the focal length f3 of the third lens group G3 to the second focal length F2 is 0.38.

[0250] The value of the ratio f4 / F2 of the focal length f4 of the fourth lens group G4 to the second focal length F2 is 0.26.

[0251] The value of the ratio -f5 / F2 of the reciprocal of the focal length f5 of the fifth lens group G5 to the second focal length is 0.39.

[0252] The value of the ratio P / TTL of the distance P moved by the optical path switching element 5 to the total optical length is 0.26.

[0253] Please refer to FIGS. 7a-7c, FIG. 7a is an axial chromatic aberration curve of the camera module 30 shown in FIG. 6 in the first shooting mode in some embodiments, FIG. 7b is a field curvature graph of the camera module 30 shown in FIG. 6 in the first shooting mode in some embodiments, and FIG. 7c is a distortion graph of the camera module 30 shown in FIG. 6 in the first shooting mode in some embodiments.

[0254] The axial chromatic aberration curve includes a spherical aberration curve corresponding to different wave bands of the system (including 650 nm, 610 nm, 555 nm, 510 nm, and 470 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. The values in FIG. 7a are small, and the on-axis aberration (spherical aberration, chromatic aberration, etc.) of the optical lens 1 is well corrected. The field curvature graph is used to show the deviation of the convergence point (image height) of the light beam at different fields of view from the ideal imaging surface, X is the sagittal direction light beam, Y is the meridional direction light beam, the abscissa is the deviation value in the optical axis direction, and the ordinate is the image height. When the field of view value is too large, the image quality of the field of view is poor or there is high-order aberration. The field curvature in both directions shown in FIG. 7b is small, and the system has good focus depth. The distortion graph is used to represent the relative deviation amount of the convergence point (actual image height) of the light beam at different fields of view from the ideal image height. The values shown in FIG. 7c are all within 2.5%, which can ensure that the picture does not have obvious deformation.

[0255] Please refer to FIGS. 8a-8c, FIG. 8a is an axial chromatic aberration curve of the camera module 30 shown in FIG. 6 in the second shooting mode in some embodiments, FIG. 8b is a field curvature graph of the camera module 30 shown in FIG. 6 in the second shooting mode in some embodiments, and FIG. 8c is a distortion graph of the camera module 30 shown in FIG. 6 in the second shooting mode in some embodiments.

[0256] The axial chromatic aberration curve 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 and 470 nm); the physical meaning is that the light of the corresponding wavelength emitted at 0 degree field 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. The values in FIG. 8a are small, and the on-axis aberration (spherical aberration, chromatic aberration, etc.) of the optical lens 1 is well corrected. The astigmatic field curve is used to show the deviation of the convergence point (image height) of the light beam at different fields from the ideal imaging surface; X is the sagittal direction light beam, Y is the meridional direction light beam, the abscissa is the deviation value along the optical axis direction, and the ordinate is the corresponding field. When the value of a certain field is too large, the image quality of the field is poor or there is high-order aberration. The distortion shown in FIG. 8b is small in both directions, and the system has good focal depth. The distortion map is used to represent the relative deviation of the convergence point (actual image height) of the light beam at different fields from the ideal image height. The values shown in FIG. 8c are all within 2.5%, which can ensure that the picture does not have obvious distortion.

[0257] Embodiment Two

[0258] Please refer to Table 2a, Table 2b and Table 2c together, wherein Table 2a is the value of the radius of curvature (R), the interval (D), the refractive index (587.56 nm wavelength), the Abbe number, the half radius and the conic coefficient (k) of each lens and reflecting element of the camera module 30 shown in FIG. 4 in the first shooting mode and the second shooting mode in another possible embodiment. When the camera module 30 is in the first shooting mode, the parameters of surface number 1a to surface number 22 are shown. When the camera module 30 is in the second shooting mode, only the parameters of surface number 1b to surface number 4b are shown; it can be understood that the parameters of surface number 5 to surface number 22 of the camera in the second shooting mode can refer to the parameters in the first shooting mode, and will not be shown again. The interval includes the thickness of the structure itself and the distance between the structures. Table 2b and Table 2c are the aspheric coefficients of each lens of the camera module 30 shown in FIG. 4 in another possible embodiment.

[0259] Table 2a

[0260] Table 2b

[0261] Table 2c

[0262] The aspheric surface in the optical lens 1 in Table 2a, Table 2b and Table 2c can be defined by, but not limited to, the following aspheric curve equation:

[0263] Wherein, z is the relative distance between the point on the aspheric surface with the distance r from the optical axis and the tangent plane at the intersection point on the optical axis of the aspheric surface; 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 2b and Table 2c. 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 and the ninth lens L9 are all aspheric lenses.

[0264] Please refer to Table 2d, which is the basic parameters of the camera module 30 shown in Figure 4 in another possible embodiment. In Table 2d, F.no is the aperture value, I MH is the half image height, TTL is the total optical length of the optical lens 1, SK1 is the distance that the third lens group G3 moves during the switching of the optical lens 1 from the first shooting mode to the second shooting mode, SK2 is the distance that the fifth lens group G5 moves during the switching of the optical lens 1 from the first shooting mode to the second shooting mode, f1 is the focal length of the first lens group G1, f2 is the focal length of the second lens group G2, f3 is the focal length of the third lens group G3, f4 is the focal length of the fourth lens group G4, f5 is the focal length of the fifth lens group G5, F1 is the focal length of the optical lens 1 in the first shooting mode, F2 is the focal length of the optical lens 1 in the second shooting mode, P is the moving distance of the light path switching element 5 during the switching of the optical lens 1 from the first shooting mode to the second shooting mode, and a is the first distance between the light path switching element 5 and the third lens group G3 in the second shooting mode. The values of f1, f2, f3, f4, f5, F1 and F2 are all effective values.

[0265] Table 2d

[0266] In Table 2d, F.no has two values, the first value is the value of the optical lens 1 in the first shooting mode, and the second value is the value of the optical lens 1 in the second shooting mode.

[0267] Please refer to Figure 9, which is a structural schematic diagram of the camera module 30 shown in Figure 4 in the first shooting mode and the second shooting mode in some embodiments.

[0268] In this embodiment, the optical lens 1 includes the first lens group G1, the second lens group G2, the third lens group G3, the fourth lens group G4, the fifth lens group G5 and the light path switching element 5. The third lens group G3, the fourth lens group G4 and the fifth lens group G5 can be arranged in the order of the object side to the image side.

[0269] When the optical lens 1 is in the first shooting mode, the light path switching element 5 is located on the image side of the first lens group G1 and on the object side of the third lens group G3, and the optical lens 1 has a first focal length.

[0270] When the optical lens 1 is in the second shooting mode, the light path switching element 5 is located on the image side of the second lens group G2 and on the object side of the third lens group G3, and the optical lens 1 has a second focal length.

[0271] In the process of switching the optical lens 1 from the first shooting mode to the second shooting mode, the third lens group G3 and the fifth lens group G5 move in the same direction along the optical axis of the third lens group G3, and the optical lens 1 switches from the first focal length to the second focal length.

[0272] The first lens group G1 includes one lens, i.e., the first lens L1. The optical power of the first lens group G1 is positive. The second lens group G2 includes one lens, i.e., the second lens L2. The optical power of the second lens group G2 is positive. The third lens group G3 includes two lenses, i.e., the third lens L3 and the fourth lens L4, wherein the third lens L3 and the fourth lens L4 are arranged in the direction from the object side to the image side, and the two lenses can be relatively fixed. The fourth lens group G4 includes three lenses, i.e., the fifth lens L5, the sixth lens L6, and the seventh lens L7, wherein the fifth lens L5, the sixth lens L6, and the seventh lens L7 are arranged in the direction from the object side to the image side, and the three lenses can be relatively fixed. The fifth lens group G5 includes two lenses, i.e., the eighth lens L8 and the ninth lens L9, wherein the eighth lens L8 and the ninth lens L9 are arranged in the direction from the object side to the image side, and the two lenses can be relatively fixed.

[0273] The light path switching element 5 can be a prism. The light path switching element 5 has an entrance surface, a reflection surface, and an exit surface. The entrance surface can be perpendicular to the optical axis direction of the first lens group G1, the exit surface can be towards the third lens group G3 and perpendicular to the optical axis direction of the third lens group G3, and the entrance surface and the exit surface can be perpendicular, and the reflection surface can have an included angle with the entrance surface and the exit surface.

[0274] The first lens group G1, the second lens group G2, and the fourth lens group G4 can be fixed elements. The third lens group G3, the fifth lens group G5, and the light path switching element 5 can be movable elements, and the moving direction of the three elements can be parallel to the optical axis direction of the third lens group G3. The light path switching element 5 can receive the light beams from the first lens group G1 and the second lens group G2 by moving the position, so as to switch the optical lens 1 between the first shooting mode and the second shooting mode. At the same time, the third lens group G3 and the fifth lens group G5 move synchronously during the switching process to complete the switching between the first shooting mode and the second shooting mode.

[0275] The optical lens 1 further comprises a light path reflection element 6. Exemplarily, the third direction can be perpendicular to the optical axis direction of the fifth lens group G5. For example, the light path reflection element 6 can be a prism, and the light path reflection element 6 can have an incident surface 61, a reflection surface 62 and an exit surface 63, wherein the incident surface 61 is perpendicular to the exit surface 63. The exit surface 63 of the light path reflection element 6 is located on the same side of the optical axis of the third lens group G3 as the first lens group G1. The light beam can enter the light path reflection element 6 through the incident surface 61, be reflected by the reflection surface 62, and exit the light path reflection element 6 through the exit surface 63.

[0276] At this time, the light beam can be received by the photosensitive element 2 for imaging after exiting the light path reflection element 6, and thus, by controlling the exiting direction of the light beam from the light path reflection element 6, the exiting direction of the light beam from the optical lens 1 is controlled, the influence of the height of the optical lens 1 on the height of the imaging surface is reduced, and thus, a larger photosensitive element 2 can be arranged, and thus, better imaging effect is achieved.

[0277] In addition, the photosensitive element 2 of the camera module 30 can be perpendicular to the third direction. For example, the photosensitive element 2 can be arranged opposite to the exit surface 63 of the light path reflection element 6.

[0278] In the embodiment, the third lens group G3 and the fifth lens group G5 are arranged to be movable, and cooperate with the light path switching element 5 to enable the optical lens 1 to change to a set focal length. Since the third lens group G3, the fourth lens group G4 and the fifth lens group G5 are arranged in sequence, the third lens group G3 and the fifth lens group G5 are far apart, and the two sides of the third lens group G3 and the fifth lens group G5 are easy to have a larger space. Thus, when the driving components of the third lens group G3 and the fifth lens group G5 are arranged, the larger space between the third lens group G3 and the fifth lens group G5 makes the design of the driving components easier, and the installation of the driving components is easy. In addition, the larger space on the two sides of the third lens group G3 and the fifth lens group G5 enables the third lens group G3 and the fifth lens group G5 to have a larger moving space.

[0279] The value of the zoom ratio M is 1.65.

[0280] The value of (|f3 / SK1|+|f5 / SK2|) / M is 14.37.

[0281] The value of the ratio f2 / f1 of the focal length f2 of the second lens group G2 to the focal length f1 of the first lens group G1 is 1.48.

[0282] The value of the ratio TTL / M of the total optical length TTL to the zoom ratio M is 19.12.

[0283] The value of the ratio F2 / TTL of the second focal length F2 to the total optical length TTL is 0.89.

[0284] The value of the ratio (F1+F2) / IMH of the sum of the first focal length F1 and the second focal length F2 to the image height is 8.2.

[0285] The value of the ratio -f3 / F2 of the inverse of the focal length f3 of the third lens group G3 to the second focal length is 0.34.

[0286] The value of the ratio f4 / F2 of the focal length f4 of the fourth lens group G4 to the second focal length is 0.25.

[0287] The value of the ratio -f5 / F2 of the inverse of the focal length f5 of the fifth lens group G5 to the second focal length is 0.39.

[0288] The value of the ratio P / TTL of the distance P moved by the optical path switching element 5 to the total optical length is 0.29.

[0289] Please refer to FIGS. 10a-10c. FIG. 10a is an axial chromatic aberration curve of the camera module 30 shown in FIG. 9 in the first shooting mode in some embodiments, FIG. 10b is a field curvature graph of the camera module 30 shown in FIG. 9 in the first shooting mode in some embodiments, and FIG. 10c is a distortion graph of the camera module 30 shown in FIG. 9 in the first shooting mode in some embodiments.

[0290] The axial chromatic aberration curve includes a spherical aberration curve corresponding to different wave bands of the system (the graph includes 650 nm, 610 nm, 555 nm, 510 nm, and 470 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. The values in FIG. 10a are small, and the on-axis aberration (spherical aberration, chromatic aberration, etc.) of the optical lens 1 is well corrected. The field curvature graph is used to show the deviation of the convergence point (image height) of the light beam in different fields of view from the ideal imaging surface. S is the sagittal direction light beam, and T is the tangential direction light beam. The abscissa is the deviation value in the optical axis direction, and the ordinate is the image height. When a certain field of view value is too large, the image quality of the field of view is poor or there is high-order aberration. The field curvature in both directions shown in FIG. 10b is small, and the system has good focus depth. The distortion graph is used to represent the relative deviation of the convergence point (actual image height) of the light beam in different fields of view from the ideal image height. The values shown in FIG. 10c are all within 2.5%, which can ensure that the picture does not have obvious deformation.

[0291] Please refer to FIG. 11a to FIG. 11c, FIG. 11a is an axial chromatic aberration curve of the camera module 30 shown in FIG. 9 in the second shooting mode in some embodiments, FIG. 11b is a field curvature graph of the camera module 30 shown in FIG. 9 in the second shooting mode in some embodiments, and FIG. 11c is a distortion graph of the camera module 30 shown in FIG. 9 in the second shooting mode in some embodiments.

[0292] The axial chromatic aberration curve 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, and 470 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. The values in FIG. 11a are small, and the on-axis aberration (spherical aberration, chromatic aberration, etc.) of the optical lens 1 is well corrected. The field curvature graph is used to show the deviation of the converging points (image height) of the light beams in different fields of view from the ideal imaging surface; X is the sagittal direction light beam, and Y is the meridional direction light beam; the abscissa is the deviation value in the direction of the optical axis, and the ordinate is the corresponding field of view. When the value of a certain field of view is too large, the image quality of the field of view is poor or there is high-order aberration. The field curvature in both directions shown in FIG. 11b is small, and the system has good focal depth. The distortion graph is used to represent the relative deviation of the converging points (actual image height) of the light beams in different fields of view from the ideal image height. The values shown in FIG. 11c are all within 2.5%, which can ensure that the picture does not have obvious distortion.

[0293] Embodiment three

[0294] Please refer to Table 3a, Table 3b, and Table 3c, wherein Table 3a is the values of the radius of curvature (R), the interval (D), the refractive index (at a wavelength of 587.56 nm), the Abbe number, the half aperture, and the conic coefficient (k) of each lens and reflective element of the camera module 30 shown in FIG. 4 in the first shooting mode and the second shooting mode in another possible embodiment. When the camera module 30 is in the first shooting mode, the parameters of surface number 1a to surface number 22 are shown. When the camera module 30 is in the second shooting mode, only the parameters of surface number 1b to surface number 4b are shown; it can be understood that the parameters of surface number 5 to surface number 22 of the camera in the second shooting mode can refer to the parameters in the first shooting mode, and are not repeated. The interval includes the thickness of the structure itself and the spacing between the structures. Table 3b and Table 3c are the aspheric coefficients of each lens of the camera module 30 shown in FIG. 4 in another possible embodiment.

[0295] Table 3a

[0296] Table 3b

[0297] Table 3c

[0298] The aspheres in the optical lens 1 in Table 3a, Table 3b and Table 3c can be defined by, but not limited to, the following aspheric curve equation:

[0299] 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 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 3b and Table 3c. 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 and the ninth lens L9 are all aspheric lenses.

[0300] Please refer to Table 3d, which is the basic parameters of the camera module 30 shown in Figure 4 in another possible embodiment. In Table 3d, F.no is the aperture value, I MH is the half image height, TTL is the total optical length of the optical lens 1, SK1 is the distance that the third lens group G3 moves in the process of switching the optical lens 1 from the first shooting mode to the second shooting mode, SK2 is the distance that the fifth lens group G5 moves in the process of switching the optical lens 1 from the first shooting mode to the second shooting mode, f1 is the focal length of the first lens group G1, f2 is the focal length of the second lens group G2, f3 is the focal length of the third lens group G3, f4 is the focal length of the fourth lens group G4, f5 is the focal length of the fifth lens group G5, F1 is the focal length of the optical lens 1 in the first shooting mode, F2 is the focal length of the optical lens 1 in the second shooting mode, P is the moving distance of the light path switching element 5 in the process of switching the optical lens 1 from the first shooting mode to the second shooting mode, and a is the first distance between the light path switching element 5 and the third lens group G3 in the second shooting mode. The values of f1, f2, f3, f4, f5, F1 and F2 are all effective values.

[0301] Table 3d

[0302] In Table 3d, F.no has two values, the first value is the value of the optical lens 1 in the first shooting mode, and the second value is the value of the optical lens 1 in the second shooting mode.

[0303] Please refer to Figure 12, which is a structural schematic diagram of the camera module 30 shown in Figure 4 in some embodiments in the first shooting mode and the second shooting mode.

[0304] In the embodiment, the optical lens 1 comprises a first lens group G1, a second lens group G2, a third lens group G3, a fourth lens group G4, a fifth lens group G5 and a light path switching element 5. The third lens group G3, the fourth lens group G4 and the fifth lens group G5 can be arranged in the order of the object side to the image side.

[0305] When the optical lens 1 is in the first shooting mode, the light path switching element 5 is located on the image side of the first lens group G1 and on the object side of the third lens group G3, and the optical lens 1 has a first focal length.

[0306] When the optical lens 1 is in the second shooting mode, the light path switching element 5 is located on the image side of the second lens group G2 and on the object side of the third lens group G3, and the optical lens 1 has a second focal length.

[0307] In the process of switching the optical lens 1 from the first shooting mode to the second shooting mode, the third lens group G3 and the fifth lens group G5 move in the same direction along the optical axis of the third lens group G3, and the optical lens 1 switches from the first focal length to the second focal length.

[0308] The first lens group G1 comprises one lens, i.e. the first lens L1. The first lens group G1 has positive refractive power. The second lens group G2 comprises one lens, i.e. the second lens L2. The second lens group G2 has positive refractive power. The third lens group G3 comprises two lenses, i.e. the third lens L3 and the fourth lens L4, wherein the third lens L3 and the fourth lens L4 are arranged in the order of the object side to the image side and can be fixed relative to each other. The fourth lens group G4 comprises three lenses, i.e. the fifth lens L5, the sixth lens L6 and the seventh lens L7, wherein the fifth lens L5, the sixth lens L6 and the seventh lens L7 are arranged in the order of the object side to the image side and can be fixed relative to each other. The fifth lens group G5 comprises two lenses, i.e. the eighth lens L8 and the ninth lens L9, wherein the eighth lens L8 and the ninth lens L9 are arranged in the order of the object side to the image side and can be fixed relative to each other.

[0309] The light path switching element 5 can be a prism. The light path switching element 5 has an entrance surface, a reflection surface and an exit surface. The entrance surface can be perpendicular to the optical axis direction of the first lens group G1, the exit surface can be towards the third lens group G3 and perpendicular to the optical axis direction of the third lens group G3, the entrance surface and the exit surface can be perpendicular, and the reflection surface can have an included angle with the entrance surface and the exit surface.

[0310] The first lens group G1, the second lens group G2 and the fourth lens group G4 can be fixed elements. The third lens group G3, the fifth lens group G5 and the light path switching element 5 can be movable elements, and the moving directions of the three can be parallel to the optical axis direction of the third lens group G3. The light path switching element 5 can receive the light beams from the first lens group G1 and the second lens group G2 respectively by moving positions, so as to switch the optical lens 1 between the first shooting mode and the second shooting mode, and meanwhile, the third lens group G3 and the fifth lens group G5 move synchronously during the switching process to complete the switching between the first shooting mode and the second shooting mode.

[0311] The optical lens 1 further comprises a light path reflection element 6. For example, the third direction can be perpendicular to the optical axis direction of the fifth lens group G5. For example, the light path reflection element 6 can be a prism, and the light path reflection element 6 can have an incident surface 61, a reflection surface 62 and an exit surface 63, and the incident surface 61 is perpendicular to the exit surface 63. The exit surface 63 of the light path reflection element 6 is located on the opposite side of the optical axis of the third lens group G3 from the first lens group G1. The light beams can enter the light path reflection element 6 through the incident surface 61, be reflected by the reflection surface 62, and exit the light path reflection element 6 through the exit surface 63.

[0312] At this time, the light beams can be received by the photosensitive element 2 for imaging after exiting the light path reflection element 6, so that by controlling the exit direction of the light beams from the light path reflection element 6, the exit direction of the light beams from the optical lens 1 is also controlled, the influence of the height of the optical lens 1 on the height of the imaging surface is reduced, and a larger photosensitive element 2 can be arranged, thereby having a better imaging effect.

[0313] In addition, the photosensitive element 2 of the camera module 30 can be perpendicular to the third direction. For example, the photosensitive element 2 can be arranged opposite to the exit surface 63 of the light path reflection element 6.

[0314] In this embodiment, the third lens group G3 and the fifth lens group G5 are arranged to be movable, and cooperate with the light path switching element 5 to enable the optical lens 1 to change to a set focal length. Since the third lens group G3, the fourth lens group G4 and the fifth lens group G5 are arranged in sequence, the third lens group G3 and the fifth lens group G5 are far apart, and the two sides of the third lens group G3 and the fifth lens group G5 are easy to have a larger space. Therefore, when the driving components of the third lens group G3 and the fifth lens group G5 are arranged, the larger space between the third lens group G3 and the fifth lens group G5 makes the design of the driving components easier and facilitates the installation of the driving components. In addition, the larger space on both sides of the third lens group G3 and the fifth lens group G5 enables the third lens group G3 and the fifth lens group G5 to have a larger moving space.

[0315] The value of the zoom ratio M is 1.65.

[0316] wherein the value of (|f3 / SK1|+|f5 / SK2|) / M is 10.08.

[0317] wherein the value of the ratio f2 / f1 of the focal length f2 of the second lens group G2 to the focal length f1 of the first lens group G1 is 1.44.

[0318] wherein the value of the ratio TTL / M of the total track length TTL to the magnification ratio M is 19.09.

[0319] wherein the value of the ratio F2 / TTL of the second focal length F2 to the total track length TTL is 0.89.

[0320] wherein the value of the ratio (F1+F2) / IMH of the sum of the first focal length F1 and the second focal length F2 to the image height IMH is 8.18.

[0321] wherein the value of the ratio -f3 / F2 of the inverse of the focal length f3 of the third lens group G3 to the second focal length F2 is 0.32.

[0322] wherein the value of the ratio f4 / F2 of the focal length f4 of the fourth lens group G4 to the second focal length F2 is 0.24.

[0323] wherein the value of the ratio -f5 / F2 of the inverse of the focal length f5 of the fifth lens group G5 to the second focal length F2 is 0.37.

[0324] wherein the value of the ratio P / TTL of the distance P moved by the optical path switching element 5 to the total track length TTL is 0.24.

[0325] Please refer to FIGS. 13a-13c, FIG. 13a is an axial chromatic aberration curve of the camera module 30 shown in FIG. 12 in the first shooting mode in some embodiments, FIG. 13b is a field curvature graph of the camera module 30 shown in FIG. 12 in the first shooting mode in some embodiments, and FIG. 13c is a distortion graph of the camera module 30 shown in FIG. 12 in the first shooting mode in some embodiments.

[0326] The axial chromatic aberration curve 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 and 470 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, and the ordinate is the normalized coordinate at the pupil. The values shown in FIG. 13a are small, and the on-axis aberration (spherical aberration, chromatic aberration, etc.) of the optical lens 1 is well corrected. The astigmatic field curve is used to show the deviation of the convergence points (image height) of the light beams at different fields of view from the ideal imaging surface; S is the sagittal direction light beam, and T is the meridional direction light beam; the abscissa is the deviation value along the optical axis, and the ordinate is the image height. When the value of a certain field of view is too large, the image quality of the field of view is poor or there is high-order aberration. The distortion shown in FIG. 13b is small in both directions, and the system has good focal depth. The distortion map is used to represent the relative deviation of the convergence points (actual image height) of the light beams at different fields of view from the ideal image height. The values shown in FIG. 13c are all within 0.5%, which can ensure that the picture does not have obvious deformation.

[0327] Please refer to FIGS. 14a to 14c; FIG. 14a is an axial chromatic aberration curve of the camera module 30 shown in FIG. 12 in the second shooting mode in some embodiments, FIG. 14b is an astigmatic field curve of the camera module 30 shown in FIG. 12 in the second shooting mode in some embodiments, and FIG. 14c is a distortion map of the camera module 30 shown in FIG. 12 in the second shooting mode in some embodiments.

[0328] The axial chromatic aberration curve 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 and 470 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, and the ordinate is the normalized coordinate at the pupil. The values shown in FIG. 14a are small, and the on-axis aberration (spherical aberration, chromatic aberration, etc.) of the optical lens 1 is well corrected. The astigmatic field curve is used to show the deviation of the convergence points (image height) of the light beams at different fields of view from the ideal imaging surface; S is the sagittal direction light beam, and T is the meridional direction light beam; the abscissa is the deviation value along the optical axis, and the ordinate is the image height. When the value of a certain field of view is too large, the image quality of the field of view is poor or there is high-order aberration. The distortion shown in FIG. 13b is small in both directions, and the system has good focal depth. The distortion map is used to represent the relative deviation of the convergence points (actual image height) of the light beams at different fields of view from the ideal image height. The values shown in FIG. 13c are all within 0.5%, which can ensure that the picture does not have obvious deformation.

[0329] Embodiment Four

[0330] Please refer to Table 4a, Table 4b and Table 4c, wherein Table 4a is a table showing the values of the radius of curvature (R), the interval (D), the refractive index (587.56nm wavelength), the Abbe number, the half aperture and the conic coefficient (k) of each lens and reflective element of the camera module 30 shown in FIG. 4 in a first shooting mode and a second shooting mode. When the camera module 30 is in the first shooting mode, the parameters of surface numbers 1a to 22 are shown. When the camera module 30 is in the second shooting mode, only the parameters of surface numbers 1b to 4b are shown; it can be understood that the parameters of surface numbers 5 to 22 of the camera in the second shooting mode can refer to the parameters of the first shooting mode, and are not repeated. The interval includes the thickness of the structure itself and the spacing between the structures. Table 4b and Table 4c are tables showing the aspheric coefficients of each lens of the camera module 30 shown in FIG. 4 in another possible embodiment.

[0331] Table 4a

[0332] Table 4b

[0333] Table 4c

[0334] The aspheres in the optical lens 1 in Table 4a, Table 4b and Table 4c can be defined by, but not limited to, the following aspheric curve equation:

[0335] Wherein z is the relative distance of the point on the aspheric curve with a distance of r from the optical axis to the tangent intersection of the aspheric curve; r is the vertical distance of the 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 4b and Table 4c. 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 and the tenth lens L10 are all aspheric lenses.

[0336] Referring to Table 4d, Table 4d is a table of basic parameters of the camera module 30 shown in FIG. 4 in another possible embodiment. In Table 4d, F.no is the F-number, I MH is the half image height, TTL is the total track length of the optical lens 1, SK1 is the distance that the third lens group G3 moves in the process of switching the optical lens 1 from the first shooting mode to the second shooting mode, SK2 is the distance that the fifth lens group G5 moves in the process of switching the optical lens 1 from the first shooting mode to the second shooting mode, f1 is the focal length of the first lens group G1, f2 is the focal length of the second lens group G2, f3 is the focal length of the third lens group G3, f4 is the focal length of the fourth lens group G4, f5 is the focal length of the fifth lens group G5, F1 is the focal length of the optical lens 1 in the first shooting mode, F2 is the focal length of the optical lens 1 in the second shooting mode, P is the moving distance of the light path switching element 5 in the process of switching the optical lens 1 from the first shooting mode to the second shooting mode, and a is the first distance between the light path switching element 5 and the third lens group G3 in the second shooting mode. In Table 4d, the values of f1, f2, f3, f4, f5, F1 and F2 are all effective values.

[0337] Table 4d

[0338] In Table 4d, F.no has two values, the first value is the value of the optical lens 1 in the first shooting mode, and the second value is the value of the optical lens 1 in the second shooting mode.

[0339] Referring to FIG. 15, FIG. 15 is a structural schematic diagram of the camera module 30 shown in FIG. 4 in some embodiments in the first shooting mode and the second shooting mode.

[0340] In the embodiment, the optical lens 1 includes the first lens group G1, the second lens group G2, the third lens group G3, the fourth lens group G4, the fifth lens group G5 and the light path switching element 5. The third lens group G3, the fourth lens group G4 and the fifth lens group G5 can be arranged in the order of the object side to the image side.

[0341] When the optical lens 1 is in the first shooting mode, the light path switching element 5 is located on the image side of the first lens group G1 and on the object side of the third lens group G3, and the optical lens 1 has a first focal length.

[0342] When the optical lens 1 is in the second shooting mode, the light path switching element 5 is located on the image side of the second lens group G2 and on the object side of the third lens group G3, and the optical lens 1 has a second focal length.

[0343] In the process of switching the optical lens 1 from the first shooting mode to the second shooting mode, the third lens group G3 and the fifth lens group G5 move in the same direction along the optical axis of the third lens group G3, and the optical lens 1 is switched from the first focal length to the second focal length.

[0344] The first lens group G1 includes one lens, i.e., the first lens L1. The first lens group G1 has positive refractive power. The second lens group G2 includes one lens, i.e., the second lens L2. The second lens group G2 has positive refractive power. The third lens group G3 includes three lenses, i.e., the third lens L3, the fourth lens L4 and the fifth lens L5, which are arranged along the direction from the object side to the image side and can be fixed relative to each other. The fourth lens group G4 includes three lenses, i.e., the sixth lens L6, the seventh lens L7 and the eighth lens L8, which are arranged along the direction from the object side to the image side and can be fixed relative to each other. The fifth lens group G5 includes two lenses, i.e., the ninth lens L9 and the tenth lens L10, which are arranged along the direction from the object side to the image side and can be fixed relative to each other.

[0345] The light path switching element 5 can be a prism. The light path switching element 5 has an entrance surface, a reflection surface and an exit surface. The entrance surface can be perpendicular to the optical axis direction of the first lens group G1, the exit surface can be towards the third lens group G3 and perpendicular to the optical axis direction of the third lens group G3, and the entrance surface and the exit surface can be perpendicular, and the reflection surface can have an angle with the entrance surface and the exit surface.

[0346] The first lens group G1, the second lens group G2 and the fourth lens group G4 can be fixed elements. The third lens group G3, the fifth lens group G5 and the light path switching element 5 can be movable elements, and the moving direction of the three can be parallel to the optical axis direction of the third lens group G3. The light path switching element 5 can receive the light beams from the first lens group G1 and the second lens group G2 by moving the position, so as to switch the optical lens 1 between the first shooting mode and the second shooting mode, and meanwhile, the third lens group G3 and the fifth lens group G5 move synchronously during the switching process to complete the switching between the first shooting mode and the second shooting mode.

[0347] The optical lens 1 further includes a light path reflection element 6. The third direction can be perpendicular to the optical axis direction of the fifth lens group G5. For example, the light path reflection element 6 can be a prism, and the light path reflection element 6 can have an entrance surface 61, a reflection surface 62 and an exit surface 63, and the entrance surface 61 is perpendicular to the exit surface 63. The exit surface 63 of the light path reflection element 6 is located on the same side of the optical axis of the third lens group G3 as the first lens group G1. The light beams can enter the light path reflection element 6 through the entrance surface 61, be reflected by the reflection surface 62, and exit the light path reflection element 6 through the exit surface 63.

[0348] At this time, the light beam can be received by the photosensitive element 2 after being emitted from the light path reflection element 6, and thus, by controlling the emission direction of the light beam from the light path reflection element 6, the emission direction of the light beam from the optical lens 1 is controlled, the influence of the height of the optical lens 1 on the height of the imaging surface is reduced, and thus, a larger photosensitive element 2 can be arranged, and a better imaging effect can be achieved.

[0349] In addition, the photosensitive element 2 of the camera module 30 can be perpendicular to the third direction. For example, the photosensitive element 2 can be arranged opposite to the emission surface 63 of the light path reflection element 6.

[0350] In the embodiment, the third lens group G3 and the fifth lens group G5 are arranged to be movable, and cooperate with the light path switching element 5 to enable the optical lens 1 to change to a set focal length. Since the third lens group G3, the fourth lens group G4, and the fifth lens group G5 are arranged in sequence, the third lens group G3 and the fifth lens group G5 are far apart, and both sides of the third lens group G3 and the fifth lens group G5 have a large space. Therefore, when the driving components of the third lens group G3 and the fifth lens group G5 are arranged, the large space between the third lens group G3 and the fifth lens group G5 makes the design of the driving components easier, and facilitates the installation of the driving components. In addition, the large space on both sides of the third lens group G3 and the fifth lens group G5 enables the third lens group G3 and the fifth lens group G5 to have a large movement space.

[0351] The value of the zoom ratio M is 1.79.

[0352] The value of (|f3 / SK1|+|f5 / SK2|) / M is 7.13.

[0353] The value of the ratio f2 / f1 of the focal length f2 of the second lens group G2 to the focal length f1 of the first lens group G1 is 1.45.

[0354] The value of the ratio TTL / M of the total optical length TTL to the zoom ratio M is 16.79.

[0355] The value of the ratio F2 / TTL of the second focal length F2 to the total optical length TTL is 0.98.

[0356] The value of the ratio (F1+F2) / IMH of the sum of the first focal length F1 and the second focal length F2 to the image height IMH is 8.98.

[0357] The value of the ratio -f3 / F2 of the inverse of the focal length f3 of the third lens group G3 to the second focal length F2 is 0.36.

[0358] The value of the ratio f4 / F2 of the focal length f4 of the fourth lens group G4 to the second focal length F2 is 0.24.

[0359] The value of the ratio -f5 / F2 of the reciprocal of the focal length f5 of the fifth lens group G5 to the second focal length is 0.35.

[0360] The value of the ratio P / TTL of the distance P moved by the optical path switching element 5 to the total optical length is 0.29.

[0361] Please refer to FIGS. 16a-16c, FIG. 16a is an axial chromatic aberration curve of the camera module 30 shown in FIG. 15 in some embodiments in the first shooting mode, FIG. 16b is a field curvature graph of the camera module 30 shown in FIG. 15 in some embodiments in the first shooting mode, and FIG. 16c is a distortion graph of the camera module 30 shown in FIG. 15 in some embodiments in the first shooting mode.

[0362] The axial chromatic aberration curve includes the spherical aberration curves corresponding to different wave bands of the system (including 650 nm, 610 nm, 555 nm, 510 nm, and 470 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. The values in FIG. 16a are small, and the on-axis aberration (spherical aberration, chromatic aberration, etc.) of the optical lens 1 is well corrected. The field curvature graph is used to show the deviation of the convergence points (image height) of the light beams in different fields of view from the ideal imaging surface, S is the sagittal direction light beam, and T is the tangential direction light beam; the abscissa is the deviation value in the optical axis direction, and the ordinate is the image height. When a certain field of view value is too large, the image quality of the field of view is poor or there is high-order aberration. The field curvature values in both directions shown in FIG. 16b are small, and the system has good focus depth. The distortion graph is used to represent the relative deviation amount of the convergence points (actual image height) of the light beams in different fields of view from the ideal image height. The values shown in FIG. 16c are all within 2.5%, which can ensure that the picture does not have obvious deformation.

[0363] Please refer to FIGS. 17a-17c, FIG. 17a is an axial chromatic aberration curve of the camera module 30 shown in FIG. 15 in some embodiments in the second shooting mode, FIG. 17b is a field curvature graph of the camera module 30 shown in FIG. 15 in some embodiments in the second shooting mode, and FIG. 17c is a distortion graph of the camera module 30 shown in FIG. 15 in some embodiments in the second shooting mode.

[0364] The axial chromatic aberration curve includes the spherical aberration curves corresponding to different wave bands (including 650 nm, 610 nm, 555 nm, 510 nm, and 470 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 optical axis direction, and the ordinate is the normalized coordinate at the pupil. The values in FIG. 17a are small, and the on-axis aberration (spherical aberration, chromatic aberration, etc.) of the optical lens 1 is well corrected. The astigmatic field curve is used to show the deviation of the convergence point (image height) of the light beam in different fields of view from the ideal imaging surface, X is the sagittal direction light beam, Y is the meridional direction light beam, the abscissa is the deviation value in the optical axis direction, and the ordinate is the corresponding field of view. When the value of a certain field of view is too large, the image quality of the field of view is poor or there is high-order aberration. The two-direction field curves shown in FIG. 17b are small, and the system has good focal depth. The distortion diagram is used to represent the relative deviation of the convergence point (actual image height) of the light beam in different fields of view from the ideal image height. The values shown in FIG. 17c are all within 5%, which can ensure that the picture does not have obvious deformation.

[0365] 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 also within the protection scope of the present application, that is, the above-described multiple embodiments can also be combined as needed.

[0366] It should be noted that all the above-mentioned drawings are exemplary illustrations 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.

[0367] The above is only some embodiments and implementation manners 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 range disclosed in the present application, which should be covered within 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 (1), characterized in that, Comprise: a first lens group (G1) having positive refractive power; a second lens group (G2) having positive refractive power; a third lens group (G3) having negative refractive power; a fourth lens group (G4) having positive refractive power; a fifth lens group (G5) having negative refractive power; and a light path switching element (5); Wherein, the third lens group (G3), the fourth lens group (G4) and the fifth lens group (G5) are arranged in order along the direction from the object side to the image side, when the optical lens (1) is in the first shooting mode, the light path switching element (5) is located on the image side of the first lens group (G1) and on the object side of the third lens group (G3), the optical lens (1) has a first focal length; when the optical lens (1) is in the second shooting mode, the light path switching element (5) is located on the image side of the second lens group (G2) and on the object side of the third lens group (G3), the optical lens (1) has a second focal length; during the process of switching the optical lens (1) from the first shooting mode to the second shooting mode, at least two of the third lens group (G3), the fourth lens group (G4) and the fifth lens group (G5) move along the optical axis, and the optical lens (1) switches from the first focal length to the second focal length. During the process of switching the optical lens (1) from the first shooting mode to the second shooting mode, the third lens group (G3) and the fifth lens group (G5) move in the same direction along the optical axis direction of the third lens group (G3), and the optical lens (1) switches from the first focal length to the second focal length.

2. The optical lens (1) according to claim 1, characterized in that, 3. The optical lens (1) according to claim 1 or 2, characterized in that: When the optical lens (1) is in the first shooting mode, the light path switching element (5) changes the direction of the light beam from the optical axis direction of the first lens group (G1) to the optical axis direction of the third lens group (G3); When the optical lens (1) is in the second shooting mode, the light path switching element (5) changes the direction of the light beam from the optical axis direction of the second lens group (G2) to the optical axis direction of the third lens group (G3); The second lens group (G2) is located on the side of the first lens group (G1) away from the third lens group (G3), and during the process of switching the optical lens (1) from the first shooting mode to the second shooting mode, the light path switching element (5) moves along the optical axis direction of the third lens group (G3). The focal length of the first lens group (G1) is smaller than the focal length of the second lens group (G2).

4. The optical lens (1) according to claim 3, characterized in that, The optical lens (1) satisfies: 0.2 < P / TTL < 0.3; 5. The optical lens (1) according to claim 3, characterized in that, Wherein, P is the moving distance of the light path switching element (5) during the process of switching the optical lens (1) from the first shooting mode to the second shooting mode, and TTL is the total optical length of the optical lens (1). The optical lens (1) satisfies: a < P; 6. The optical lens (1) according to claim 3, characterized in that, ​ In the second shooting mode, the light path switching element (5) has a first interval a with the third lens group (G3); during switching of the optical lens (1) from the first shooting mode to the second shooting mode, the light path switching element (5) moves a distance P, and the third lens group (G3) moves towards the light path switching element (5).

7. The optical lens (1 ) according to any one of claims 3 to 6, characterized in that, The optical lens (1) further comprises a light path reflection element (6) located on the image side of the fifth lens group (G5), the light path reflection element (6) is used to change the direction of the light beam from the optical axis direction of the fifth lens group (G5) to a third direction, the third direction has an angle with the optical axis direction of the fifth lens group (G5); The third direction is parallel to the optical axis direction of the first lens group (G1), the light path reflection element (6) has an exit surface (63) perpendicular to the third direction, and the exit surface (63) is located on the same side of the optical axis of the third lens group (G3) as the first lens group (G1).

8. The optical lens (1 ) according to any one of claims 2 to 7, characterized in that, The optical lens (1) satisfies: F2>F1, and 5<(|f3 / SK1|+|f5 / SK2|) / M<20; Wherein, SK1 is the distance that the third lens group (G3) moves during switching of the optical lens (1) from the first shooting mode to the second shooting mode, SK2 is the distance that the fifth lens group (G5) moves during switching of the optical lens (1) from the first shooting mode to the second shooting mode, f3 is the focal length of the third lens group (G3), f5 is the focal length of the fifth lens group (G5), F1 is the first focal length, F2 is the second focal length, M is the zoom ratio of the optical lens (1), M=F2 / F1.

9. The optical lens (1 ) according to any one of claims 2 to 8, characterized in that, The optical lens (1) satisfies: 0.15<f4 / F2<0.3; Wherein, f4 is the focal length of the fourth lens group (G4), F2 is the second focal length.

10. The optical lens (1 ) according to any one of claims 2 to 9, characterized in that, The optical lens (1) satisfies: 0.3<-f3 / F2<0.4; Wherein, f3 is the focal length of the third lens group (G3), F2 is the second focal length.

11. The optical lens (1) according to any one of claims 2 to 10, characterized in that, The optical lens (1) satisfies: 0.3<-f5 / F2<0.45; Wherein, f5 is the focal length of the fifth lens group (G5), F2 is the second focal length.

12. The optical lens (1 ) according to any one of claims 1 to 11, characterized in that, The optical lens (1) satisfies: F2>F1, and 15<TTL / M<20; Wherein, TTL is the total optical length of the optical lens (1), F1 is the first focal length, F2 is the second focal length, M is the zoom ratio of the optical lens (1), M=F2 / F1.

13. The optical lens (1) according to claim 12, characterized in that, The optical lens (1) satisfies: F2 / TTL>0.

8.

14. The optical lens (1 ) according to any one of claims 1 to 13, characterized in that, The optical lens (1) satisfies: 6<(F1+F2) / IMH<10; Wherein, IMH is the half image height of the optical lens (1), F1 is the first focal length, F2 is the second focal length.

15. The optical lens (1) according to any one of claims 1 to 14, characterized in that, The optical lens (1) satisfies: M=F2 / F1, 1<M<2; Wherein, M is the zoom ratio of the optical lens (1); F1 is the first focal length, and F2 is the second focal length.

16. The optical lens (1 ) according to any one of claims 1 to 15, characterized in that, The optical lens (1) satisfies: 1 Wherein, f1 is the focal length of the first lens group (G1), and f2 is the focal length of the second lens group (G2).

17. The optical lens (1) according to any one of claims 1 to 16, characterized in that, The optical lens (1) is configured to move at least one lens in the third lens group (G3), the fourth lens group (G4) and the fifth lens group (G5) along the optical axis during focusing of the optical lens (1).

18. The optical lens (1 ) according to claim 17, characterized in that, The optical lens (1) is configured to move the third lens group (G3) and the fifth lens group (G5) along the optical axis direction of the third lens group (G3) during focusing of the optical lens (1).

19. A camera module (30) characterized by: The optical lens (1) is configured to move at least one lens in the third lens group (G3), the fourth lens group (G4) and the fifth lens group (G5) along the optical axis during focusing of the optical lens (1).

20. The camera module (30) according to claim 19, characterized in that The optical lens (1) is configured to move the third lens group (G3) and the fifth lens group (G5) along the optical axis direction of the third lens group (G3) during focusing of the optical lens (1).

21. An electronic device (100), characterized by The optical lens (1) is configured to move at least one lens in the third lens group (G3), the fourth lens group (G4) and the fifth lens group (G5) along the optical axis during focusing of the optical lens (1). The optical lens (1) is configured to move the third lens group (G3) and the fifth lens group (G5) along the optical axis direction of the third lens group (G3) during focusing of the optical lens (1). The optical lens (1) is configured to move at least one lens in the third lens group (G3), the fourth lens group (G4) and the fifth lens group (G5) along the optical axis during focusing of the optical lens (1). The optical lens (1) is configured to move the third lens group (G3) and the fifth lens group (G5) along the optical axis direction of the third lens group (G3) during focusing of the optical lens (1). The optical lens (1) is configured to move at least one lens in the third lens group (G3), the fourth lens group (G4) and the fifth lens group (G5) along the optical axis during focusing of the optical lens (1). The optical lens (1) is configured to move the third lens group (G3) and the fifth lens group (G5) along the optical axis direction of the third lens group (G3) during focusing of the optical lens (1). The optical lens (1) is configured to move at least one lens in the third lens group (G3), the fourth lens group (G4) and the fifth lens group (G5) along the optical axis during focusing of the optical lens (1). The optical lens (1) is configured to move the third lens group (G3) and the fifth lens group (G5) along the optical axis direction of the third lens group (G3) during focusing of the optical lens (1). The optical lens (1) is configured to move at least one lens in the third lens group (G3), the fourth lens group (G4) and the fifth lens group (G5) along the optical axis during focusing of the optical lens (1). The optical lens (1) is configured to move the third lens group (G3) and the fifth lens group (G5) along the optical axis direction of the third lens group (G3) during focusing of the optical lens (1). The optical lens (1) is configured to move at least one lens in the third lens group (G3), the fourth lens group (G4) and the fifth lens group (G

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