Camera module and electronic device

Abstract

Provided in the present application are a camera module and an electronic device. The camera module comprises a first lens group, a first reflecting element, a second lens group, a third lens group and a photosensitive chip which are arranged in sequence from an object side to an image side, the first lens group being a fixed lens group, and the first reflecting element being used for changing an optical axis from a first direction to a second direction, the first direction intersecting with the second direction. The camera module further comprises a first driving mechanism and a second driving mechanism, wherein the first driving mechanism is connected to the second lens group, the first driving mechanism being used for driving the second lens group to move along the optical axis in the second direction, and the second driving mechanism is connected to the third lens group, the second driving mechanism being used for driving the third lens group to move along the optical axis in the second direction. In this way, the camera module has a wider continuous zoom range, thereby achieving closer macro-shooting at the wide-angle end and longer-distance shooting at the telephoto end.

Description

Camera modules and electronic equipment

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on January 30, 2024, with application number 202410133562.7, and priority to the Chinese patent application with the invention name “Camera module and electronic equipment”, all contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of lenses, and in particular to a camera module and electronic equipment. Background Art

[0003] With the continuous development of portable electronic devices such as mobile phones, users have increasingly demanded higher performance from their camera modules. To meet these needs, periscope cameras have become a trending trend. However, existing periscope cameras still suffer from a narrow continuous zoom range. Summary of the Invention

[0004] The present application provides a camera module and electronic equipment with a wide continuous zoom range.

[0005] In the first aspect, the present application provides a camera module, which includes a first lens group, a first reflective element, a second lens group, a third lens group and a photosensitive chip arranged in sequence from the object side to the image side, the first lens group is a fixed lens group, the first reflective element is used to change the optical axis in the first direction to the second direction, and the first direction intersects with the second direction; the camera module also includes a first driving mechanism and a second driving mechanism; the first driving mechanism is connected to the second lens group, and the first driving mechanism is used to drive the second lens group to move along the optical axis in the second direction; the second driving mechanism is connected to the third lens group, and the second driving mechanism is used to drive the third lens group to move along the optical axis in the second direction.

[0006] It can be understood that the first driving mechanism can drive the second lens group to move along the optical axis in the second direction, and the second driving mechanism can drive the third lens group to move along the optical axis in the second direction, so that the camera module has a wider continuous zoom range, thereby achieving more macro wide-angle shooting and longer-distance telephoto shooting.

[0007] When camera modules are incorporated into electronic devices such as mobile phones, they offer a wide continuous zoom range for capturing and recording images. These modules accommodate a variety of complex shooting scenarios, such as indoors and outdoors, and a wide range of subjects, including people and the environment. With a wider range of applications and target audiences, camera modules can meet diverse shooting needs and enhance the user experience.

[0008] In a possible implementation, the first lens group and the third lens group have negative optical powers, and the second lens group has a positive optical power; the focal length f1 of the first lens group, the focal length f2 of the second lens group, and the focal length f3 of the third lens group satisfy: f1 / f2 < -3, -1 < f2 / f3 < -0.5.

[0009] It can be understood that the distribution among the focal length f1 of the first lens group, the focal length f2 of the second lens group, and the focal length f3 of the third lens group is relatively reasonable. With this distribution of optical powers, by reasonably setting the refractive index, Abbe number, shape, thickness, and air gap of the lenses in each lens group, a good balance among aberration, volume, cost, thermal reliability, etc. can be achieved, and a wide range of continuous zoom ratios can be realized.

[0010] It can be understood that the distribution among the focal length f1 of the first lens group, the focal length f2 of the second lens group, and the focal length f3 of the third lens group is relatively reasonable. Therefore, the ratio of the total system length TTL1 of the imaging module to the focal length EFLT at the wide-angle end of the imaging module, that is, the value of TTL1 / EFLT, is small, enabling the length of the imaging module in the second direction to be reduced, which is beneficial to realizing the miniaturized setting of the imaging module.

[0011] It can be understood that the distribution among the focal length f1 of the first lens group, the focal length f2 of the second lens group, and the focal length f3 of the third lens group is relatively reasonable. Therefore, the aperture number Fno at the wide-angle end of the imaging module is small and has a wide value range, that is, the aperture number at the wide-angle end of the imaging module is large, which can increase the light input of the imaging module, thereby improving the imaging quality of the imaging module.

[0012] It can be understood that the distribution among the focal length f1 of the first lens group, the focal length f2 of the second lens group, and the focal length f3 of the third lens group is relatively reasonable. Therefore, both the focusing stroke △L2 of the second lens group moving along the optical axis in the second direction and the focusing stroke △L3 of the third lens group moving along the optical axis in the second direction are small, and the stroke △L2 of the second lens group moving along the optical axis in the second direction is small relative to the total system length TTL1 of the imaging module, which can reduce the length of the imaging module in the second direction, that is, reduce the total optical length TTL1 of the imaging module, thereby being beneficial to reducing the volume of the imaging module and further being beneficial to realizing the miniaturized setting of the imaging module.

[0013] In a possible implementation, the focal length f1 of the first lens group satisfies: -40 < f1 < -30; and / or, the focal length f2 of the second lens group satisfies: 7 < f2 < 12; and / or, the focal length f3 of the third lens group satisfies: -18 < f3 < -12.

[0014] It can be understood that the distribution of focal length f1 of the first lens group, focal length f2 of the second lens group, and focal length f3 of the third lens group is relatively reasonable. With this distribution of optical power, by properly setting the refractive index, Abbe number, shape, thickness, and air gap of the lenses in each lens group, a good balance between aberrations, volume, cost, thermal reliability, and other factors can be achieved, enabling a wide range of continuous zoom ratios for the camera module.

[0015] It is understandable that, due to the reasonable distribution of the focal length f1 of the first lens group, the focal length f2 of the second lens group, and the focal length f3 of the third lens group, the ratio of the total system length TTL1 of the camera module to the focal length EFLT at the wide-angle end of the camera module is small, the aperture number Fno at the wide-angle end of the camera module is small, the focusing stroke △L2 of the second lens group along the second direction of the optical axis movement and the focusing stroke △L3 of the third lens group along the second direction of the optical axis movement are both small, and the ratio of the focusing stroke △L2 of the second lens group along the second direction of the optical axis movement to the total optical length TTL1 of the camera module is small. This is conducive to improving the imaging quality of the camera module and achieving a miniaturized and thinned setting of the camera module.

[0016] In a possible implementation, the first lens group includes a first lens, the first lens has positive optical power, and the object-side surface of the first lens is a convex surface.

[0017] It can be understood that the first lens can be used to gather light from the external environment, so that the diameter of the light beam entering the camera module is smaller, and the aperture of the second lens group and the third lens group is no longer the maximum limit of the light aperture, thereby effectively increasing the light aperture of the camera module.

[0018] In one possible implementation, the material of the first lens satisfies the following conditions: Nd < 1.65, Vd > 50; where Nd is the material's refractive index and Vd is the Abbe number. It is understood that the lower the refractive index and the higher the Abbe number of the first lens in the camera module, the higher the light transmittance. This results in greater light penetration and higher optical quality, resulting in clearer images captured by the camera module.

[0019] In one possible implementation, the first lens group includes a second lens, which is located on the image side of the first lens; the focal length f11 of the first lens satisfies: f11>0, and the focal length f12 of the second lens satisfies: f12<0.

[0020] It's understandable that the first lens focuses light, while the second lens diverges it. The first lens group, consisting of the first and second lenses, diverges light. It's understandable that the second lens, used in conjunction with the first lens, forms a positive and negative lens structure that better addresses aberrations like chromatic aberration, providing the camera module with greater freedom and improved image quality.

[0021] In a possible implementation, the second lens group includes a third lens, a fourth lens, and a fifth lens, and at least one of the third lens, the fourth lens, and the fifth lens has negative optical power.

[0022] It can be understood that the third lens, the fourth lens and the fifth lens make the second lens group have positive optical power, so that the optical power distribution between the second lens group and the first lens group and the third lens group is more reasonable. The refractive index, Abbe number, shape, thickness and air gap of the third to fifth lenses can achieve a good balance between aberrations, volume, cost, thermal reliability, etc., and realize a wide range of continuous zoom ratios of the camera module.

[0023] It can be understood that the third to fifth lenses provide a more reasonable distribution of the focal length f1 of the first lens group, the focal length f2 of the second lens group, and the focal length f3 of the third lens group. This helps reduce the ratio of the camera module's total system length TTL1 to the focal length EFLT at the wide-angle end of the camera module, thereby reducing the length of the camera module in the second direction and further facilitating a miniaturized camera module.

[0024] It can be understood that the third through fifth lenses provide a more reasonable distribution of the focal length f1 of the first lens group, the focal length f2 of the second lens group, and the focal length f3 of the third lens group. Consequently, the aperture number Fno at the wide-angle end of the camera module is smaller and has a wider range of values. This facilitates a larger aperture number at the wide-angle end of the camera module, thereby increasing the amount of light entering the camera module and, in turn, improving the imaging quality of the camera module.

[0025] It can be understood that the third through fifth lenses provide a more reasonable distribution of the focal length f1 of the first lens group, the focal length f2 of the second lens group, and the focal length f3 of the third lens group. Consequently, the optical axis movement distance ΔL2 of the second lens group along the second direction and the focusing distance ΔL3 of the third lens group along the second direction are both relatively short. Furthermore, the optical axis movement distance ΔL2 of the second lens group along the second direction is relatively short relative to the total system length TTL1 of the camera module, thereby facilitating a reduction in the length of the camera module in the second direction and, in turn, facilitating a miniaturized design of the camera module.

[0026] In a possible implementation, the optical lens further includes a stop, and the stop is located between the first lens group and the second lens group.

[0027] It is understood that when the aperture is located between the second and third lenses, it can achieve a large aperture at both the wide-angle and telephoto ends of the camera module. Furthermore, the camera module of this embodiment uses a larger number of lenses for aberration correction, which is beneficial for achieving better image quality. Furthermore, when the aperture is located between the second and third lenses, it facilitates correction of aperture aberrations.

[0028] In one possible implementation, the camera module satisfies the following condition: 0.1 ≤ IH / EFLT ≤ 0.5, where IH is the camera module's image height, and EFLT is the focal length at the telephoto end of the camera module. It is understood that a larger image height IH results in a larger target surface. This allows for a larger, more comprehensive chip to be placed on the target surface, improving the camera module's performance.

[0029] In one possible implementation, the camera module further includes a fourth lens group, located on the image side of the third lens group, and having positive optical power. It is understood that the fourth lens group can converge light diverged by the third lens group, effectively compensating for image quality and improving the imaging quality of the camera module.

[0030] In one possible implementation, the fourth lens group is a fixed lens group. It is understandable that the fourth lens group enables light to form an image on the imaging surface, thereby improving the imaging quality of the camera module.

[0031] In one possible implementation, the camera module also includes a second reflective element, which is located between the third lens group and the filter. The second reflective element is used to change the optical axis of the second direction to a third direction, and the third direction and the first direction both intersect with the second direction.

[0032] It can be understood that since the second reflective element enables the photosensitive chip to have a larger target surface, a chip with a larger volume and more comprehensive functions can be arranged on the target surface of the camera module to improve the shooting performance of the camera module.

[0033] In one possible implementation, when the camera module is at the wide-angle end, the first driving mechanism drives the second lens group to move in a direction away from the first reflective element, and the second driving mechanism drives the third lens group to move in a direction away from the first reflective element; when the camera module is at the telephoto end, the first driving mechanism drives the second lens group to move in a direction close to the first reflective element, and the second driving mechanism drives the third lens group to move in a direction close to the first reflective element.

[0034] It can be understood that the first driving mechanism can drive the second lens group to move along the optical axis in the second direction, and the second driving mechanism can drive the third lens group to move along the optical axis in the second direction, so that the camera module has a wider continuous zoom range, can achieve focusing and autofocusing of different zoom ratios, and improve the shooting quality of the camera module at the wide-angle end and the telephoto end.

[0035] In a possible implementation, the focal length EFLT at the telephoto end and the focal length EFLW at the wide-angle end satisfy: 1.2≤EFLT / EFLW≤3.

[0036] It can be understood that due to the reasonable distribution of focal lengths between the first through third lens groups of the camera module, the ratio of the focal length EFLW at the wide-angle end of the camera module to the focal length EFLT at the telephoto end of the camera module, or EFLT / EFLW, has a relatively wide range of values. This allows for a wider range of zoom ratios and magnifications, thereby improving the imaging quality of the camera module. Of course, other values ​​for EFLT / EFLW can also be selected based on actual needs.

[0037] In one possible implementation, the camera module satisfies: 0.6≤TTL1 / EFLT≤1.8; wherein TTL1 is the distance from the vertex where the object side surface of the first reflective element intersects the reflective surface to the imaging surface in the optical axis direction of the camera module.

[0038] It is understandable that due to the reasonable distribution of focal lengths between the first to third lens groups of the camera module, the ratio of the camera module's total system length TTL1 to the focal length EFLT at the telephoto end of the camera module, that is, the range of values ​​of TTL1 / EFLW, is relatively small. Thus, the camera module's shorter total system length TTL1 is beneficial for reducing the length of the camera module in the second direction and facilitating a miniaturized camera module.

[0039] In a possible implementation, the wide-angle end of the camera module satisfies: 1.4≤Fno≤4; where Fno is the aperture number of the wide-angle end of the camera module.

[0040] It is understandable that the aperture number Fno at the wide-angle end of the camera module is smaller, that is, the aperture at the wide-angle end of the camera module is larger. This can achieve the characteristics of the camera module with a large aperture, allowing more light to enter the camera module. In addition, it can also ensure the high resolution and zoom continuity of the camera module.

[0041] In one possible implementation, the camera module satisfies: 1≤△L2 / △L3≤2, and 0.1≤△L2 / TTL1≤0.3; wherein, △L2 is the stroke of the second lens group moving along the optical axis in the second direction, and △L3 is the stroke of the third lens group moving along the optical axis in the second direction.

[0042] It can be understood that, due to the reasonable distribution of focal lengths between the first lens group to the third lens group of the camera module, the focusing stroke △L2 of the second lens group moving along the optical axis can be greater than or equal to the focusing stroke △L3 of the third lens group moving along the optical axis, which can effectively avoid collisions between the second lens group and the third lens group when they move during the focusing process. Moreover, the focusing stroke △L2 of the second lens group moving along the optical axis is smaller than the total system length TTL1 of the camera module, and the focusing stroke △L3 of the third lens group moving along the optical axis is also smaller than the total system length TTL1 of the camera module. In this way, the total system length TTL1 of the camera module can be smaller, thereby reducing the length of the camera module in the second direction, that is, reducing the total optical length TTL1 of the camera module, which is beneficial to reducing the volume of the camera module and helping to achieve a miniaturized setting of the camera module. Furthermore, during the camera module's focusing process, the second and third lens groups require only a small focus stroke to complete the process, resulting in faster focusing and continuous zooming, higher image quality, a wider range of applicable scenarios, a wider target user base, and a better user experience. Of course, other values ​​for △L2 / △L3 and △L2 / TTL1 can also be selected based on actual needs.

[0043] In one possible implementation, the zoom ratio of the camera module is in the range of three times to five times.

[0044] It is understandable that the camera module can realize shooting at both the wide-angle end and the telephoto end, and can shoot a variety of objects in various complex shooting application scenarios, thereby expanding the scope of application of the camera module.

[0045] In one possible implementation, the equivalent focal length of the camera module is in the range of 70 mm to 120 mm.

[0046] It can be understood that within a relatively wide range of equivalent focal length, the camera module can achieve lossless optical zoom, and the imaging quality of the camera module is relatively high.

[0047] In a second aspect, the present application provides an electronic device, which includes a housing and the above-mentioned camera module, wherein the camera module is installed in the housing.

[0048] It is understandable that when the camera module is applied to an electronic device, the electronic device has a wide continuous zoom range, and the user experience is better. While the camera module can achieve long-distance shooting of objects, it can also achieve continuous optical zoom with little impact on image quality, and the imaging quality of the electronic device is better. In addition, the length of the camera module in the first direction is small, that is, the length of the camera module in the thickness direction of the electronic device is small, and the electronic device can be thinned. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] FIG1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;

[0050] FIG2 is a partial cross-sectional schematic diagram of an embodiment of the electronic device shown in FIG1 taken along line AA;

[0051] FIG3 is a simplified schematic diagram of a partial structure of the camera module shown in FIG2 in one embodiment;

[0052] FIG4 is a simplified schematic diagram of a partial structure of the camera module shown in FIG3 in one embodiment;

[0053] FIG5 is a simplified schematic diagram of a portion of the structure of another embodiment of the camera module shown in FIG2 at the wide-angle end;

[0054] FIG6 is a simplified schematic diagram of a portion of the structure of another embodiment of the camera module shown in FIG2 at the telephoto end;

[0055] FIG7 is a schematic diagram of imaging optical distortion of a camera module according to a first embodiment;

[0056] FIG8 is a simplified schematic diagram of a portion of the structure of another embodiment of the wide-angle end of the camera module shown in FIG2 ;

[0057] FIG9 is a simplified schematic diagram of a portion of the structure of another embodiment of the telephoto end of the camera module shown in FIG2 ;

[0058] FIG10 is a schematic diagram of imaging optical distortion of a camera module according to a second embodiment;

[0059] FIG11 is a second simplified schematic diagram of a portion of the structure of another embodiment of the wide-angle end of the camera module shown in FIG2 ;

[0060] FIG12 is a second simplified schematic diagram of a portion of the structure of another embodiment of the telephoto end of the camera module shown in FIG2 ;

[0061] FIG13 is a schematic diagram of imaging optical distortion of a camera module according to a third embodiment;

[0062] FIG14 is a schematic diagram of imaging optical distortion of a camera module according to a fourth embodiment;

[0063] FIG15 is a third simplified schematic diagram of a portion of the structure of another embodiment of the wide-angle end of the camera module shown in FIG2 ;

[0064] FIG16 is a third simplified schematic diagram of a portion of the structure of another embodiment of the telephoto end of the camera module shown in FIG2 ;

[0065] FIG17 is a schematic diagram of imaging optical distortion of a camera module according to a fifth embodiment;

[0066] FIG18 is a simplified schematic diagram of a partial structure of the camera module shown in FIG2 in another embodiment. DETAILED DESCRIPTION

[0067] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application.

[0068] In the description of this application, it should be noted that, unless otherwise specified or limited, the terms "install", "connect", and "connect" should be understood in a broad sense. For example, "connection" can be a detachable or non-detachable connection; a direct connection or an indirect connection through an intermediate medium; an electrical connection or a mechanical connection. "Fixed connection" refers to a connection between two components such that the relative positional relationship remains unchanged after connection. Furthermore, two components forming an integrated structure through an integral molding process means that during the formation of one of the two components, the component is connected to the other component without the need for further processing (such as bonding, welding, snap-fit ​​connection, or screw connection) to connect the two components together. Component A and component B can be arranged relative to each other so that component A is projected along the target direction to obtain projection C, and component B is projected along the target direction to obtain projection D, and projections C and D can at least substantially overlap. In some embodiments, the substantial overlap can be any of the following: projection C is completely within projection D. Alternatively, projection D is completely within projection C. Alternatively, projection C and projection D intersect with each other, and the intersection area of ​​projection C and projection D accounts for more than 50% of projection C or projection D.

[0069] The directional terms mentioned in the embodiments of the present application, such as "inside" and "outside", are only used to refer to the directions in the drawings. Therefore, the directional terms used are for better and clearer description and understanding of the embodiments of the present application, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0070] The terms "first", "second", etc. in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship. "Multiple" means at least two.

[0071] To facilitate understanding of the optical lens provided in the embodiments of the present application, the following terms are explained:

[0072] The optical axis is an axis passing through the center of each lens.

[0073] The near optical axis can be understood as the area of ​​the lens surface close to the optical axis.

[0074] With the lens as the boundary, the side where the object is located is called the object side, and the surface of the lens close to the object side is called the object side surface.

[0075] With the lens as the boundary, the side where the image of the object is located is called the image side, and the surface of the lens close to the image side is called the image side surface.

[0076] Focal length, also known as focal length, is a measure of the convergence or divergence of light in an optical system. It refers to the vertical distance from the optical center of a lens or lens group to the focal plane, when an infinitely distant object is formed into a sharp image on the focal plane. From a practical perspective, it can be understood as the distance from the center of the lens to the image plane. For fixed-focus lenses, the position of the optical center is fixed.

[0077] Focal power, defined as the difference between the image-side beam convergence and the object-side beam convergence, is the reciprocal of the focal length of the lens and characterizes the ability of an optical system to deflect light.

[0078] Positive optical power, also called positive refractive power, means that the lens has a positive focal length and can focus light.

[0079] Negative optical power, also known as negative refractive power, means that the lens has a negative focal length and can diverge light.

[0080] The aperture is a device used to control the amount of light passing through the lens, and it is usually inside the lens.

[0081] The aperture (F-number) is a relative value calculated by dividing the focal length of a lens by the diameter of the lens aperture (the inverse of the relative aperture). The smaller the F-number, the more light enters the image per unit time. A larger F-number reduces the depth of field, blurring the background in the image, similar to the effect of a telephoto lens.

[0082] In optical instruments, the field of view (FOV) is the angle between the two edges of the maximum range through which the image of the measured object can pass, with the lens as the vertex. The field of view determines the visual range of the optical instrument. A larger field of view means a wider field of view and a smaller optical magnification.

[0083] In optical instruments, the half field of view (HFOV) is the angle between the optical axis and the edge of the lens where the image of the object can pass through the lens. The half field of view represents half the field of view.

[0084] The effective focal length (EFL) of an optical lens is defined as the distance from the center of the camera module to the focal point.

[0085] The wide-angle end (wideend) is the shortest focal length of the lens, that is, the short focal length end. The lens has the largest viewing angle and is used to shoot close-ups, especially close-ups of large scenes.

[0086] The focal length at the wide-angle end of the camera module (EFLW) is defined as the distance from the center to the focal point of the wide-angle end of the camera module.

[0087] The telescopic end is the longest focal length of the lens, that is, the long focal length. The lens has the smallest viewing angle and is used to shoot distant scenes, especially close-ups.

[0088] The focal length of the telephoto end of the camera module (effect focal length attelescopic end, EFLT) is defined as the distance from the center of the telephoto end of the camera module to the focus.

[0089] Total track length (TTL) is defined as the distance from the object side of the first lens closest to the subject to the imaging surface, measured from the object side to the image side. It is the primary factor in determining camera height.

[0090] TTL1 represents the distance from the vertex where the object-side surface of the first reflective element intersects the reflective surface to the imaging surface.

[0091] The image height (Imaging Height, IH) of the imaging surface represents half of the diagonal length of the effective pixel area on the photosensitive chip, that is, the radius of the imaging circle.

[0092] The refractive index (Nd) of a material is defined as the absolute value of the ratio of the propagation speed of electromagnetic waves (including visible light) to the speed of light in a vacuum when the material propagates. It is an indicator that describes the propagation speed and bending degree of the material to light.

[0093] The Abbe number (Vd), also known as the dispersion coefficient, is the difference ratio of the refractive index of an optical material at different wavelengths, representing the degree of dispersion of the material.

[0094] Distortion, also known as distortion, refers to the degree to which the image formed by an optical system is distorted relative to the object itself. Distortion is caused by spherical aberration. The height at which the chief rays of light from different fields of view intersect the Gaussian image plane after passing through the optical system is not equal to the ideal image height. The difference between the two is the distortion. Therefore, distortion only changes the image position of off-axis object points on the ideal plane, distorting the image shape but not affecting image clarity.

[0095] FIG1 is a schematic structural diagram of an electronic device 100 according to an embodiment of the present application.

[0096] As shown in FIG1 , in some embodiments, electronic device 100 may be a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a camera, a personal computer, a notebook computer, an in-vehicle device, a wearable device, augmented reality (AR) glasses, an AR helmet, virtual reality (VR) glasses or a VR helmet, or other devices with photo and video recording functions. The electronic device 100 of the embodiment shown in FIG1 is described using a mobile phone as an example.

[0097] FIG2 is a partial cross-sectional schematic diagram of an embodiment of the electronic device 100 shown in FIG1 taken along line AA.

[0098] As shown in Figure 2, and in combination with Figure 1, the electronic device 100 includes a screen 10, a housing 20, a host circuit board 30, and a camera module 40. The camera module 40 can be a front camera module or a rear camera module. It should be noted that Figures 1 and 2 only schematically illustrate 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 Figures 1 and 2. In addition, when the electronic device 100 is a device of other forms, the electronic device 100 may also not include the screen 10 and the host circuit board 30.

[0099] In some embodiments, the screen 10 is mounted on the housing 20 and, together with the housing 20, encloses the interior of the electronic device 100. The interior of the electronic device 100 can be used to house components of the electronic device 100, such as a battery, a receiver, or a microphone. The screen 10 can be a flat screen or a curved screen.

[0100] For example, the camera module 40 can be located inside the electronic device 100. The housing 20 has a light-transmitting portion 21. The shape of the light-transmitting portion 21 is not limited to the circular shape shown in FIG1 , but can also be an elliptical or irregular shape. The light-transmitting portion 21 connects the interior of the electronic device 100 to the exterior of the electronic device 100. Light from outside the electronic device 100 can enter the interior of the electronic device 100 through the light-transmitting portion 21. The camera module 40 can capture the light entering the interior of the electronic device 100.

[0101] It will be understood that, for ease of description, the camera module 40 will be defined as having a first direction Z, a second direction X, and a third direction Y. The first direction Z may be the thickness direction of the camera module 40, the second direction X may be the length direction of the camera module 40, and the second direction X is perpendicular to the first direction Z. The third direction Y may be the width direction of the camera module 40, and the third direction Y is perpendicular to the first direction Z and the second direction X. In other embodiments, the coordinate system of the camera module 40 may be flexibly configured according to specific practical needs.

[0102] The above specifically introduces the structure of the relevant components of the camera module 40. The following will specifically introduce the structure of the camera module 40 and the setting of relevant optical parameters in conjunction with the accompanying drawings.

[0103] As shown in Figure 2, the camera module 40 includes a first lens group G1, a first reflective element 458a, a second lens group G2, a third lens group G3, a filter 44 and a photosensitive chip 43 arranged in sequence from the object side to the image side. The first lens group G1 is a fixed lens group, and the first reflective element 458a is used to change the optical axis in the first direction to the second direction, and the first direction intersects with the second direction. Among them, the photosensitive chip 43 can also be called an image sensor. The camera module 40 forms an imaging surface on the photosensitive chip 43. For example, the filter 44 can be used to filter infrared light or blue light in the light before entering the photosensitive chip 43, so as to ensure that the photosensitive chip 43 has better imaging quality.

[0104] It is understood that the camera module 40 may include fewer or more structures. For example, the camera module 40 may include fewer structures. Exemplarily, the camera module 40 may not include the filter 44. It should be noted that FIG2 is only schematically encircled and illustrated in a dotted frame.

[0105] As shown in FIG2 , the camera module 40 further includes a first drive mechanism 41 and a second drive mechanism 42. For example, the first drive mechanism 41 may be connected to the second lens group G2 and may be used to drive the second lens group G2 to move along the optical axis in the second direction. The second drive mechanism 42 may be connected to the third lens group G3 and may be used to drive the third lens group G3 to move along the optical axis in the second direction.

[0106] It can be understood that the first driving mechanism 41 can drive the second lens group G2 to move along the optical axis in the second direction, and the second driving mechanism 42 can drive the third lens group G3 to move along the optical axis in the second direction, so that the camera module 40 has a wider continuous zoom range, thereby achieving more macro wide-angle shooting and longer-distance telephoto shooting.

[0107] It is understandable that because the second lens group G2 moves along the optical axis in the second direction and the third lens group G3 also moves along the optical axis in the second direction, the second lens group G2 and the third lens group G3 do not occupy too much space in the first direction, thereby reducing the length of the camera module 40 in the first direction, improving the space utilization of the camera module 40, and thus facilitating a thin configuration of the camera module 40. When the camera module 40 is applied to the electronic device 100, the height of the camera module 40 in the thickness direction of the electronic device 100 is relatively small, thereby facilitating a thin configuration of the electronic device 100.

[0108] It is understood that the first reflective element 458a changes the optical axis from the first direction to the second direction, thereby reducing the thickness of the camera module 40 in the first direction. In this way, when the camera module 40 is applied to an electronic device 100 such as a mobile phone, the camera module 40 does not increase the size of the electronic device 100 in the thickness direction, thereby facilitating a thinner configuration of the electronic device 100.

[0109] When the camera module 40 is incorporated into an electronic device 100, such as a mobile phone, the electronic device 100 also exhibits a wide continuous zoom range, enabling it to capture and record images. The camera module 40 accommodates a variety of complex shooting scenarios, such as indoors and outdoors, and a wide range of subjects, such as people and surroundings. The camera module 40 has a wider range of applications and a wider target audience, meeting diverse shooting needs and improving the user experience.

[0110] For example, the first drive mechanism 41 may include a magnet and a coil (not shown in the drawings). When energized, the coil cooperates with the magnet to drive the second lens group G2 to move along the optical axis in the second direction. In other embodiments, the first drive mechanism 41 may also be an SMA motor. This application does not limit this in detail.

[0111] For example, the second drive mechanism 42 may include a magnet and a coil (not shown in the drawings). When energized, the coil cooperates with the magnet to drive the third lens group G3 to move along the optical axis in the second direction. In other embodiments, the second drive mechanism 42 may also be an SMA motor. This application is not limited to this specific embodiment.

[0112] It is understandable that the structure of the first drive mechanism 41 and the structure of the second drive mechanism 42 can be the same or different. In other embodiments, the first drive mechanism 41 and the second drive mechanism 42 can also be integrated into an integral drive device.

[0113] FIG3 is a simplified schematic diagram of a portion of the structure of the camera module 40 shown in FIG2 in one embodiment.

[0114] As shown in FIG3 , when the camera module 40 is switched to the wide-angle end, the first drive mechanism 41 can be used to drive the second lens group G2 to move away from the first reflective element 458a, and the second drive mechanism 42 can drive the third lens group G3 to move away from the first reflective element 458a. At this time, when the camera module 40 is at the wide-angle end, the camera module 40 can focus on close-up or even macro subjects (including the user of the camera module 40).

[0115] FIG4 is a simplified schematic diagram of a portion of the structure of the camera module 40 shown in FIG3 in one embodiment.

[0116] As shown in FIG4 , when the camera module 40 is switched to the telephoto end, the first drive mechanism 41 can be used to drive the second lens group G2 toward the first reflective element 458a, and the second drive mechanism 42 can drive the third lens group G3 toward the first reflective element 458a. At this time, when the camera module 40 is at the telephoto end, the camera module 40 can focus on a distant subject (including the user of the camera module 40).

[0117] In one embodiment, the focal length f1 of the first lens group G1 satisfies: f1 < 0, that is, the first lens group G1 may have negative refractive power. The focal length f2 of the second lens group G2 satisfies: f2 > 0, that is, the second lens group G2 may have positive refractive power. The focal length f3 of the third lens group G3 satisfies: f3 < 0, that is, the third lens group G3 may have negative refractive power.

[0118] For example, the focal length f1 of the first lens group G1, the focal length f2 of the second lens group G2, and the focal length f3 of the third lens group G3 may satisfy the following: f1 / f2<-3, -1<f2 / f3<-0.5. For example, f1 / f2 may be equal to -3.01, -3.5, -4.0, -5.55, -8.23, -10, or -11.11, and f2 / f3 may be equal to -0.99, -0.8, -0.75, -0.6, or -0.51, etc.

[0119] It can be understood that the distribution of focal length f1 of the first lens group G1, focal length f2 of the second lens group G2, and focal length f3 of the third lens group G3 is relatively reasonable. With this distribution of optical power, by properly configuring the refractive index, Abbe number, shape, thickness, and air gap of the lenses in each lens group, a good balance between aberrations, volume, cost, thermal reliability, and other factors can be achieved, enabling a wide range of continuous zoom ratios.

[0120] It is understood that the distribution of the focal length f1 of the first lens group G1, the focal length f2 of the second lens group G2, and the focal length f3 of the third lens group G3 is relatively reasonable. Therefore, the ratio of the total system length TTL1 of the camera module 40 to the focal length EFLT at the wide-angle end of the camera module 40, that is, the value of TTL1 / EFLT, is small, which allows the length of the camera module 40 in the second direction to be reduced, which is conducive to achieving a miniaturized design of the camera module 40.

[0121] It is understandable that the distribution of the focal length f1 of the first lens group G1, the focal length f2 of the second lens group G2, and the focal length f3 of the third lens group G3 is relatively reasonable. Therefore, the aperture number Fno at the wide-angle end of the camera module 40 is relatively small and has a wide range of values. In other words, the aperture number at the wide-angle end of the camera module 40 is relatively large, which can increase the amount of light entering the camera module 40, thereby improving the imaging quality of the camera module 40.

[0122] It can be understood that the distribution of the focal length f1 of the first lens group G1, the focal length f2 of the second lens group G2, and the focal length f3 of the third lens group G3 is relatively reasonable. Therefore, the focusing stroke ΔL2 of the second lens group G2 along the optical axis of the second direction and the focusing stroke ΔL3 of the third lens group G3 along the optical axis of the second direction are both relatively small. In addition, the focusing stroke ΔL2 of the second lens group G2 along the optical axis of the second direction is relatively small relative to the total system length TTL1 of the camera module 40. This can reduce the length of the camera module 40 in the second direction, that is, reduce the total optical length TTL1 of the camera module 40, thereby facilitating a reduction in the volume of the camera module 40 and further facilitating a miniaturized design of the camera module 40.

[0123] Exemplarily, the focal length f1 of the first lens group G1 may satisfy: -40 < f1 < -30. For example, f1 may be equal to -30.1, -33, -35.12, -38 or -39.99, etc. Exemplarily, the focal length f2 of the second lens group G2 may satisfy: 7 < f2 < 12. For example, f2 may be equal to 7.01, 8.8, 9.5, 10.66, 11 or 11.99, etc. Exemplarily, the focal length f3 of the third lens group G3 may satisfy: -18 < f3 < -12. For example, f3 may be equal to -12.12, -13, -14.3, -16.66, -17.2 or -17.99, etc.

[0124] It can be understood that the distribution among the focal length f1 of the first lens group G1, the focal length f2 of the second lens group G2, and the focal length f3 of the third lens group G3 is relatively reasonable. Under this distribution of optical power, by reasonably setting the refractive index, Abbe number, shape, thickness, and air gap of the lenses in each lens group, a good balance among aberration, volume, cost, thermal reliability, etc. can be achieved, and a wide range of continuous zoom ratios of the imaging module 40 can be realized.

[0125] It can be understood that since the distribution among the focal length f1 of the first lens group G1, the focal length f2 of the second lens group G2, and the focal length f3 of the third lens group G3 is relatively reasonable, the ratio of the total system length TTL1 of the imaging module 40 to the focal length EFLT at the wide-angle end of the imaging module 40 is small, the aperture number Fno at the wide-angle end of the imaging module 40 is small, the focusing stroke △L2 of the second lens group G2 moving along the optical axis in the second direction and the focusing stroke △L3 of the third lens group G3 moving along the optical axis in the second direction are both small, and the ratio of the focusing stroke △L2 of the second lens group G2 moving along the optical axis in the second direction to the total optical length TTL1 of the imaging module 40 is small. Thus, it is beneficial to improve the imaging quality of the imaging module 40 and achieve miniaturization of the imaging module 40.

[0126] As shown in FIGS. 3 and 4, exemplarily, the first lens group G1 of the imaging module 40 may include a first lens 451 and a second lens 452 arranged in sequence from the object side to the image side. The focal length of the first lens 451 is f11, and f11 may satisfy: f11 > 0. The focal length of the second lens 452 is f12, and f12 may satisfy: f12 < 0. It can be understood that the first lens 451 may have a positive optical power, and the first lens 451 may be used to converge the light in the external environment. The second lens 452 may have a negative optical power, and the second lens 452 may be used to diverge the light converged by the first lens 451.

[0127] In one embodiment, the object-side surface of the first lens 451 of the camera module 40 is convex. It is understood that the first lens 451 can be used to focus light from the external environment, reducing the diameter of the light beam entering the camera module 40. The aperture of the second lens group G2 and the third lens group G3 is no longer the maximum limit of the optical aperture, thereby effectively increasing the optical aperture of the camera module 40.

[0128] It can be understood that the second lens 452 is used in conjunction with the first lens 451 to form a positive and negative lens coordination structure, which can better solve aberration problems such as chromatic aberration, and the camera module 40 has a higher degree of freedom and better imaging quality.

[0129] In other embodiments, the first lens group G1 may also include one lens or multiple lenses. The specific number of lenses is not limited in this application.

[0130] In one embodiment, the material of the first lens 451 of the camera module 40 satisfies the following conditions: Nd < 1.65, Vd > 50, where Nd is the refractive index of the material and Vd is the Abbe number of the material. For example, the refractive index of the first lens 451 may be 1.64, 1.55, 1.47, or 1.28, and the Abbe number of the first lens 451 may be 50.5, 51, 52, or 53.66, for example.

[0131] It is understood that the first lens 451 of the camera module 40 has a relatively low refractive index and a relatively large Abbe number, and thus has a relatively high light transmittance. Thus, the first lens 451 has a relatively strong light penetration capability, and the optical quality of the first lens 451 is relatively high, making the images captured by the camera module 40 clearer.

[0132] As shown in Figures 3 and 4, the second lens group G2 may include a third lens 453, a fourth lens 454, and a fifth lens 455, arranged in order from the object side to the image side. At least one of the third lens 453, the fourth lens 454, and the fifth lens 455 has negative refractive power. For example, the focal length f23 of the third lens 453 satisfies: f23>0, the focal length f24 of the fourth lens 454 satisfies: f24<0, and the focal length f25 of the fifth lens 455 satisfies: f25>0.

[0133] It can be understood that the sixth lens 456 and the seventh lens 457 make the third lens group G3 have negative optical focal length, so that the optical focal length distribution between the third lens group G3 and the first lens group G1 and the second lens group G2 is more reasonable. The refractive index, Abbe number, shape, thickness, and air gap of the sixth lens 456 and the seventh lens 457 can achieve a good balance between aberrations, volume, cost, thermal reliability, etc., and realize a wide range of continuous zoom ratios.

[0134] It can be understood that the sixth lens 456 and the seventh lens 457 provide a more reasonable distribution of the focal length f1 of the first lens group G1, the focal length f2 of the second lens group G2, and the focal length f3 of the third lens group G3. Therefore, this helps reduce the ratio of the total system length TTL1 of the camera module 40 to the focal length EFLT at the wide-angle end of the camera module 40, thereby helping to reduce the length of the camera module 40 in the second direction, and further facilitating the miniaturization of the camera module 40.

[0135] It can be understood that the sixth lens 456 and the seventh lens 457 provide a more reasonable distribution of the focal length f1 of the first lens group G1, the focal length f2 of the second lens group G2, and the focal length f3 of the third lens group G3. Therefore, the aperture number Fno at the wide-angle end of the camera module 40 is smaller and has a wider range of values. This facilitates a larger aperture number at the wide-angle end of the camera module 40, thereby increasing the amount of light entering the camera module 40 and further improving the imaging quality of the camera module 40.

[0136] It can be understood that the sixth lens 456 and the seventh lens 457 provide a more reasonable distribution among the focal length f1 of the first lens group G1, the focal length f2 of the second lens group G2, and the focal length f3 of the third lens group G3. Therefore, the travel ΔL2 of the second lens group G2 along the optical axis in the second direction and the focusing travel ΔL3 of the third lens group G3 along the optical axis in the second direction are both relatively short. Furthermore, the travel ΔL2 of the second lens group G2 along the optical axis in the second direction is relatively short relative to the total system length TTL1 of the camera module 40, thereby facilitating a reduction in the length of the camera module 40 in the second direction and, in turn, facilitating a compact design of the camera module 40.

[0137] In other embodiments, the focal length f23 of the third lens 453, the focal length f24 of the fourth lens 454, and the focal length f25 of the fifth lens 455 may also satisfy other relationships. The specific focal length range is not limited in this application.

[0138] In other embodiments, the second lens group G2 may also include one lens or multiple lenses. The specific number of lenses is not limited in this application.

[0139] As shown in Figures 3 and 4 , the third lens group G3 may include a sixth lens 456 and a seventh lens 457 arranged sequentially from the object side to the image side. At least one of the sixth lens 456 and the seventh lens 457 has negative refractive power. For example, the focal length f36 of the sixth lens satisfies: f36<0, and the focal length f37 of the seventh lens satisfies: f37>0.

[0140] It can be understood that the sixth lens 456 and the seventh lens 457 make the third lens group G3 have negative optical focal length, so that the optical focal length distribution between the third lens group G3 and the first lens group G1 and the second lens group G2 is more reasonable. The refractive index, Abbe number, shape, thickness and air gap of the sixth lens 456 and the seventh lens 457 can achieve a good balance between aberrations, volume, cost, thermal reliability, etc., and realize a wide range of continuous zoom ratios of the camera module 40.

[0141] It can be understood that the sixth lens 456 and the seventh lens 457 provide a more reasonable distribution of the focal length f1 of the first lens group G1, the focal length f2 of the second lens group G2, and the focal length f3 of the third lens group G3. Therefore, this helps reduce the ratio of the total system length TTL1 of the camera module 40 to the focal length EFLT at the wide-angle end of the camera module 40, thereby helping to reduce the length of the camera module 40 in the second direction, and further facilitating the miniaturization of the camera module 40.

[0142] It can be understood that the sixth lens 456 and the seventh lens 457 provide a more reasonable distribution of the focal length f1 of the first lens group G1, the focal length f2 of the second lens group G2, and the focal length f3 of the third lens group G3. Therefore, the aperture number Fno at the wide-angle end of the camera module 40 is smaller and has a wider range of values. This facilitates a larger aperture number at the wide-angle end of the camera module 40, thereby increasing the amount of light entering the camera module 40 and further improving the imaging quality of the camera module 40.

[0143] It can be understood that the sixth lens 456 and the seventh lens 457 provide a more reasonable distribution among the focal length f1 of the first lens group G1, the focal length f2 of the second lens group G2, and the focal length f3 of the third lens group G3. Therefore, the travel ΔL2 of the second lens group G2 along the optical axis in the second direction and the focusing travel ΔL3 of the third lens group G3 along the optical axis in the second direction are both relatively short. Furthermore, the travel ΔL2 of the second lens group G2 along the optical axis in the second direction is relatively short relative to the total system length TTL1 of the camera module 40, thereby facilitating a reduction in the length of the camera module 40 in the second direction and, in turn, facilitating a compact design of the camera module 40.

[0144] In other embodiments, the focal length f36 of the sixth lens 456 and the focal length f37 of the seventh lens 457 may also satisfy other relationships. The specific focal length range is not limited in this application.

[0145] In other embodiments, the third lens group G3 may also include one lens or multiple lenses. The specific number of lenses is not limited in this application.

[0146] Exemplarily, each lens of the camera module 40 includes two opposing surfaces, and at least one of the surfaces is a lens surface. The lens surface is a curved surface that is convex or concave along the direction in which the optical axis of the camera module 40 extends, and the lens surface can participate in imaging and correcting aberrations. Specifically, light entering the camera module 40 can be refracted on the lens surface and change the optical path. In this way, the lens surface can change the optical path entering the camera module 40, causing the light to converge or diverge accordingly, thereby participating in imaging.

[0147] As shown in Figure 2, the camera module 40 may further include an aperture 459. Exemplarily, the aperture 459 may be located between every two lenses.

[0148] For example, the diaphragm 459 may be an aperture diaphragm, which is used to limit the amount of light entering the camera module 40 and reduce stray light in the camera module 40 to change the brightness of the image. In other embodiments, the position of the diaphragm 459 is not limited to being located between the second lens 452 and the third lens 453 as shown in FIG. 2 , and the position of the diaphragm 459 can be flexibly adjusted according to actual needs.

[0149] It is understood that when the aperture 459 is located between the second lens 452 and the third lens 453, the aperture 459 can achieve a large aperture effect at both the wide-angle and telephoto ends of the camera module 40. Furthermore, the camera module 40 of this embodiment uses a large number of lenses for aberration correction, which is conducive to achieving better imaging quality. Furthermore, when the aperture 459 is located between the second lens 452 and the third lens 453, the aperture 459 is facilitated to correct aberrations.

[0150] In other embodiments, the camera module 40 may also not include the aperture 459. It is understood that FIG2 only schematically illustrates some components of the camera module 40, and the actual shape, actual size, and actual structure of these components are not limited by FIG2.

[0151] Fig. 5 is a simplified schematic diagram of a portion of the structure of another embodiment of the camera module 40 shown in Fig. 2 at the wide-angle end. Fig. 6 is a simplified schematic diagram of a portion of the structure of another embodiment of the camera module 40 shown in Fig. 2 at the telephoto end.

[0152] As shown in Figures 5 and 6, the camera module 40 may further include a fourth lens group G4. For example, the second lens group G2 may include a third lens 453 and a fourth lens 454. The third lens group G3 may include a fifth lens 455 and a sixth lens 456, and the fourth lens group G4 may include a seventh lens 457.

[0153] As shown in Figures 5 and 6, the fourth lens group G4 can be located on the image side of the third lens group G3. In other words, the fourth lens group G4 is located between the third lens group G3 and the photosensitive chip 43. In this way, the fourth lens group G4 can be used to effectively compensate for image quality and improve the imaging quality of the camera module 40.

[0154] Exemplarily, the fourth lens group G4 is a fixed lens group and has positive optical power. It is understood that the fourth lens group G4 can converge the light diverged by the third lens group G3 so that the light can be imaged on the imaging surface, thereby improving the imaging quality of the camera module 40.

[0155] It is understood that the focal length of the wide-angle end of the camera module 40 is EFLW, and the focal length of the telephoto end of the camera module 40 is EFLT.

[0156] It is understandable that when the focal length f1 of the first lens group G1, the focal length f2 of the second lens group G2, and the focal length f3 of the third lens group G3 satisfy: f1 / f2<-3, -1<f2 / f3<-0.5, the camera module 40 can satisfy: 0.1≤IH / EFLT≤0.5. For example, IH / EFLT can be equal to 0.1, 0.23, 0.28, 0.3, 0.35, 0.46 or 0.5, etc. It is understandable that the image height IH of the camera module 40 is large, and the target surface of the camera module 40 is also large. In this way, a chip with a larger volume and more comprehensive functions can be set on the target surface of the camera module 40 to improve the shooting performance of the camera module 40. Of course, other values ​​of IH / EFLT can also be selected according to actual needs.

[0157] It is understood that when the focal length f1 of the first lens group G1, the focal length f2 of the second lens group G2, and the focal length f3 of the third lens group G3 satisfy the following conditions: f1 / f2<-3, -1<f2 / f3<-0.5, the focal length EFLW at the wide-angle end of the camera module 40 and the focal length EFLT at the telephoto end of the camera module 40 may satisfy the following conditions: 1.2≤EFLT / EFLW≤3. For example, EFLT / EFLW may be equal to 1.2, 1.36, 1.5, 1.88, 2.38, or 3, etc.

[0158] It is understood that due to the reasonable distribution of focal lengths among the first lens group G1 through the third lens group G3 of the camera module 40, the ratio of the focal length EFLW at the wide-angle end of the camera module 40 to the focal length EFLT at the telephoto end of the camera module 40, i.e., the ratio EFLT / EFLW, has a relatively wide range of values. This allows the camera module 40 to have a wider range of zoom ratios and magnifications, thereby improving the imaging quality of the camera module 40. Of course, other values ​​for EFLT / EFLW can also be selected based on actual needs.

[0159] For example, the first reflective element 458a can be located between the first lens group G1 and the second lens group G2. In other words, the first reflective element 458a can be located between the second lens 452 and the third lens 453. It is understood that when light in the external environment, after being diverged by the first lens group G1, passes through the first reflective element 458a, the light will be refracted inside the first reflective element 458a, and the light will be refracted from the first direction to the second direction. Because the propagation direction of light in the external environment is different from the direction of light propagation in the second lens group G2 and the third lens group G3, the placement position and angle of the camera module 40 in the camera module 40 or the electronic device 100 are more flexible, and the camera module 40 has a wider range of uses. Because the light propagates in the second direction within the camera module 40, the length of the camera module 40 in the first direction can be reduced, allowing the camera module 40 to be applied to thin electronic devices such as mobile phones and tablets. In addition, the light undergoes a longer optical path contraction in the first reflecting element 458a, and the diameter of the light beam is reduced. Therefore, the first reflecting element 458a makes the aperture of the second lens group G2 no longer the maximum limitation of the light aperture, thereby effectively increasing the light aperture of the camera module 40.

[0160] It is understandable that when the focal length f1 of the first lens group G1, the focal length f2 of the second lens group G2, and the focal length f3 of the third lens group G3 satisfy: f1 / f2<-3, -1<f2 / f3<-0.5, the camera module 40 can satisfy: 0.6≤TTL1 / EFLT≤1.8; wherein TTL1 is the distance from the vertex where the object side surface of the first reflective element 458a intersects with the reflective surface to the imaging surface. For example, TTL1 / EFLT can be equal to 0.6, 0.8, 0.95, 1.2, 1.66 or 1.8, etc. It is understandable that due to the reasonable distribution of the focal lengths of the first lens group G1 to the third lens group G3 of the camera module 40, the ratio of the total system length TTL1 of the camera module 40 to the focal length EFLT of the telephoto end of the camera module 40, that is, the value range of TTL1 / EFLW is relatively small. In this way, the total system length TTL1 of the camera module 40 is smaller, which is beneficial to reducing the length of the camera module 40 in the second direction and is beneficial to achieving a miniaturized setting of the camera module 40.

[0161] It is understandable that when the focal length f1 of the first lens group G1, the focal length f2 of the second lens group G2, and the focal length f3 of the third lens group G3 satisfy: f1 / f2<-3, -1<f2 / f3<-0.5, the aperture number Fno at the wide-angle end of the camera module 40 satisfies: 1.4≤Fno≤4. For example, Fno can be equal to 1.4, 1.9, 2.38, 3.66, 3.8 or 4, etc. It is understandable that the aperture number Fno at the wide-angle end of the camera module 40 is smaller, that is, the aperture at the wide-angle end of the camera module 40 is larger. In this way, the large aperture characteristic of the camera module 40 can be realized, so that more light enters the camera module 40. In addition, the high resolution and zoom continuity of the camera module 40 can also be guaranteed. Of course, other values ​​of Fno can also be selected according to actual needs.

[0162] It is understood that the first lens group G1 can remain fixed during the focusing process of the camera module 40, and the focusing stroke of the first lens group G1 along the optical axis is △L1, and △L1 can satisfy: △L1=0. The second lens group G2 can move along the optical axis during the focusing process of the camera module 40, and the focusing stroke of the second lens group G2 along the optical axis is △L2, and △L2 can satisfy: △L2>0. The third lens group G3 can also move along the optical axis during the focusing process of the camera module 40, and the focusing stroke of the third lens group G3 along the optical axis is △L3, and △L3 can satisfy: △L3>0.

[0163] In one embodiment, when the focal length f1 of the first lens group G1, the focal length f2 of the second lens group G2, and the focal length f3 of the third lens group G3 satisfy the following conditions: f1 / f2 < -3, -1 < f2 / f3 < -0.5, the focusing stroke ΔL2 of the second lens group G2 along the optical axis, the focusing stroke ΔL3 of the third lens group G3 along the optical axis, and the total system length TTL1 of the camera module 40 may satisfy the following conditions: 1 ≤ ΔL2 / ΔL3 ≤ 2, and 0.1 ≤ ΔL2 / TTL1 ≤ 0.3. For example, ΔL2 / ΔL3 may be equal to 1, 1.2, 1.33, 1.68, 1.8, or 2, and ΔL2 / TTL1 may be equal to 0.1, 0.15, 0.2, 0.23, 0.28, or 0.3, etc. It is understandable that, due to the reasonable distribution of the focal lengths of the first lens group G1 to the third lens group G3 of the camera module 40, the focusing stroke △L2 of the second lens group G2 moving along the optical axis can be greater than or equal to the focusing stroke △L3 of the third lens group G3 moving along the optical axis, which can effectively avoid the second lens group G2 and the third lens group G3 from colliding during movement during the focusing process. In addition, the focusing stroke △L2 of the second lens group G2 moving along the optical axis is smaller than the total system length TTL1 of the camera module 40, and the focusing stroke △L3 of the third lens group G3 moving along the optical axis is also smaller than the total system length TTL1 of the camera module 40. In this way, the total system length TTL1 of the camera module 40 can be smaller, thereby reducing the length of the camera module 40 in the second direction, which is beneficial to reducing the volume of the camera module 40 and helping to achieve a miniaturized setting of the camera module 40. Furthermore, during the focusing process of the camera module 40, the second lens group G2 and the third lens group G3 only require a relatively short focusing stroke to complete the focusing process, resulting in a faster focusing speed for the camera module 40, higher imaging quality, a wider range of applicable scenarios, a wider target user base, and a better user experience. Of course, other values ​​for ΔL2 / ΔL3 and ΔL2 / TTL1 can also be selected based on actual needs. It is understood that in other embodiments, the camera module 40 may not satisfy the above relationship.

[0164] It is understandable that the zoom ratio of the camera module 40 is in the range of three to five times. For example, the camera module 40 can achieve shooting at the wide-angle end as well as shooting at the telephoto end, and can shoot a variety of objects in various complex shooting application scenarios, thereby expanding the scope of application of the camera module 40. It is understandable that the equivalent focal length of the camera module 40 is in the range of 70 mm to 120 mm. For example, within a relatively wide equivalent focal length range, the camera module 40 can achieve optical zoom, and the imaging quality of the camera module 40 is relatively high.

[0165] Some specific but non-limiting examples of the embodiments of the present application will be described in more detail below with reference to the relevant drawings.

[0166] First embodiment: Referring to Figures 3 and 4, in this embodiment, the camera module 40 comprises seven lenses. The camera module 40 includes, arranged in order from the object side to the image side, a first lens 451, a second lens 452, a first reflective element 458a, a third lens 453, a fourth lens 454, a fifth lens 455, a sixth lens 456, a seventh lens 457, a filter 44, and a photosensitive chip 43. The first lens 451, the third lens 453, the fourth lens 454, and the sixth lens 456 all have positive optical power. The second lens 452, the fifth lens 455, and the seventh lens 457 all have negative optical power. It will be appreciated that the first lens 451 and the second lens 452 may form a first lens group G1. The third lens 453, the fourth lens 454, and the fifth lens 455 may form a second lens group G2. The sixth lens 456 and the seventh lens 457 may form a third lens group G3. It is understood that the first lens 451 satisfies: Nd = 1.64, Vd = 23.5. It is understood that the light penetrating power of the first lens 451 is strong, and the optical quality of the first lens 451 is high, so that the image captured by the camera module 40 is clearer.

[0167] It can be understood that in Table 1 and Table 2, S1 and S2 can respectively represent the object side surface and image side surface of the first lens 451; S3 and S4 can respectively represent the object side surface and image side surface of the second lens 452; S5 and S6 can respectively represent the object side surface and image side surface of the first reflecting element 458a; S7 and S8 can respectively represent the object side surface and image side surface of the third lens 453; S9 ​​and S10 can respectively represent the object side surface and image side surface of the fourth lens 454; S11 and S12 can respectively represent the object side surface and image side surface of the fifth lens 455; S13 and S14 can respectively represent the object side surface and image side surface of the sixth lens 456, S15 and S16 can respectively represent the object side surface and image side surface of the seventh lens 457, and S17 and S18 can respectively represent the object side surface and image side surface of the filter 44. It should be noted that in this application, the meanings of symbols such as S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S13 and S14 are the same and will not be repeated when they appear again later.

[0168] Some design parameters of the camera module 40 of the first embodiment of the present application are shown in Table 1 below.

[0169] Table 1 Partial design parameters of each lens of the camera module 40 in the first embodiment

[0170] Wherein, R is the curvature radius of the first lens 451 to the seventh lens 457, the first reflective element 458a, and the optical filter 44 of the camera module 40. Nd is the material refractive index of the first lens 451 to the seventh lens 457, the first reflective element 458a, and the optical filter 44 of the camera module 40. Vd is the Abbe number of the first lens 451 to the seventh lens 457, the first reflective element 458a, and the optical filter 44 of the camera module 40. It should be noted that in this application, when R, Nd, and Vd appear again in subsequent tables, the symbols representing the same meaning will not be repeated.

[0171] In addition, Th is the thickness of the first lens 451 to the seventh lens 457 and the filter 44 of the camera module 40. The thickness of S1 refers to the distance between the object side surface of the first lens 451 and the image side surface of the first lens 451. The thickness of S2 refers to the distance between the image side surface of the first lens 451 and the object side surface of the second lens 452. The thickness of S3 refers to the distance between the object side surface of the second lens 452 and the image side surface of the second lens 452. The thickness of S4 refers to the distance between the image side surface of the second lens 452 and the first reflective element 458a. The thickness of S5 refers to the distance between the first reflective element 458a and the third lens 453. The thickness of S7 refers to the distance between the object side surface of the third lens 453 and the image side surface of the third lens 453. The thickness of S8 refers to the distance between the image side surface of the third lens 453 and the object side surface of the fourth lens 454. The thickness of S9 refers to the distance between the object side surface of the fourth lens 454 and the image side surface of the fourth lens 454. The thickness of S10 refers to the distance between the image-side surface of the fourth lens 451 and the object-side surface of the fifth lens 455. The thickness of S11 refers to the distance between the object-side surface of the fifth lens 455 and the image-side surface of the fifth lens 455. The thickness of S12 refers to the distance between the image-side surface of the fifth lens 455 and the object-side surface of the sixth lens 456. The thickness of S13 refers to the distance between the object-side surface of the sixth lens 456 and the image-side surface of the sixth lens 456. The thickness of S14 refers to the distance between the image-side surface of the sixth lens 456 and the object-side surface of the seventh lens 457. The thickness of S15 refers to the distance between the object-side surface of the seventh lens 457 and the image-side surface of the seventh lens 457. The thickness of S16 refers to the distance between the image-side surface of the seventh lens 457 and the object-side surface of the filter 44. The thickness of S17 refers to the distance between the object-side surface of the filter 44 and the image-side surface of the filter 44. The thickness of S18 refers to the distance between the image-side surface of the filter 44 and the imaging surface. It should be noted that in this application, when symbols with the same meaning appear again in subsequent tables, they will not be repeated.

[0172] In addition, the aspheric coefficients of each lens of the camera module 40 of the first embodiment of the present application are shown in Table 2 below.

[0173] Table 2 Aspheric coefficients of each lens of the camera module 40 in the first embodiment

[0174] Among them, A2, A4, A6, A8, A 10 、A 12 、A 14 、A 16 、A 18 、A 20 and A 22 Indicates the aspheric coefficient. Polynomial coefficients that do not exist in the table (such as A1, A3, etc.) are all 0. It should be noted that the parameters in the table are expressed in scientific notation. For example, 4.70E-04 means 4.70×10 -4 ;-3.51E-11 means -3.51×10 -11 .

[0175] It is understood that among the 14 aspheric surfaces of the camera module 40 shown in Table 1 and Table 2, the surface types z of all even-order and odd-order aspheric surfaces can be defined using, but not limited to, the following aspheric surface formula:

[0176] Among them, z is the aspheric height, r is the radial coordinate of the aspheric surface, c is the vertex curvature of the aspheric surface, K is the quadratic surface constant, A i Substituting the design parameters of the first lens 451 to the seventh lens 457 of the camera module 40 into the above-mentioned aspheric surface formula, the object-side and image-side surface shapes of the first lens 451 to the seventh lens 457 of the camera module 40 of the first embodiment of the present application can be obtained.

[0177] Based on the data in Table 1 and Table 2, some parameters of the camera module 40 of the first embodiment of the present application can be obtained as shown in Table 3 below.

[0178] Table 3 Partial parameters of the camera module 40 of the first embodiment

[0179] Among them, EFLT represents the focal length of the telephoto end of the camera module 40, that is, the focal length EFLT of the telephoto end of the camera module 40 satisfies: EFLT = 20.00 mm. Fno represents the aperture number of the wide-angle end of the camera module 40, that is, the aperture number Fno of the wide-angle end of the camera module 40 satisfies: Fno = 3.00. TTL1 is the total length of the system, that is, the total system length TTL1 of the camera module 40 satisfies: TTL1 = 31.40 mm. Sa is the width of the object side or image side of the first reflective element 458a, that is, the size Sa of the first reflective element 458a of the camera module 40, which satisfies: Sa = 2.05 mm. IH is the image height of the imaging surface, that is, the image height IH of the camera module 40 satisfies: IH = 3.60 mm.

[0180] It is understood that the focal length f1 of the first lens group G1 of the camera module 40 satisfies: f1 = -36. The focal length f2 of the second lens group G2 of the camera module 40 satisfies: f1 = 9.7. The focal length f3 of the third lens group G3 of the camera module 40 satisfies: f3 = -16.74.

[0181] Then, the focal length f1 of the first lens group G1 of the camera module 40 and the focal length f2 of the second lens group G2 of the camera module 40 satisfy: f1 / f2 = -3.71. The focal length f2 of the second lens group G2 of the camera module 40 and the focal length f3 of the third lens group G3 of the camera module 40 satisfy: f2 / f3 = -0.58. It can be understood that the distribution between the focal length f1 of the first lens group G1, the focal length f2 of the second lens group G2, and the focal length f3 of the third lens group G3 is relatively reasonable, and the camera module 40 can achieve a wide range of continuous zoom ratios.

[0182] It can be understood that the ratio of the image height IH of the camera module 40 and the focal length at the wide-angle end, that is, IH / EFLT = 0.18, it can be understood that the target surface of the camera module 40 is larger, and a larger and more comprehensive chip can be set on the target surface of the camera module 40 to improve the shooting performance of the camera module 40.

[0183] It is understood that the focal length EFLT at the telephoto end of the camera module 40 and the focal length EFLW at the wide-angle end of the camera module 40 satisfy the relationship EFLT / EFLW = 1.67. It is understood that the wide range of EFLT / EFLW values ​​of the camera module 40 allows for a wide range of zoom ratios and magnifications, thereby improving the imaging quality of the camera module 40.

[0184] It is understood that the total system length TTL1 of the camera module 40 and the focal length EFLT at the telephoto end of the camera module 40 satisfy the following relationship: TTL1 / EFLT = 1.57. It is also understood that the range of values ​​for TTL1 / EFLT of the camera module 40 is relatively small. Thus, the total optical system length TTL1 of the camera module 40 is relatively small, which facilitates the miniaturization of the camera module 40.

[0185] It is understood that the aperture number Fno at the wide-angle end of the camera module 40 is smaller, that is, the aperture at the wide-angle end of the camera module 40 is larger. In this way, the large aperture characteristic of the camera module 40 can be achieved, ensuring the high resolution and zoom continuity of the camera module 40.

[0186] It is understood that the focusing stroke ΔL2 of the second lens group G2 of the camera module 40 and the focusing stroke ΔL3 of the third lens group G3 of the camera module 40 satisfy: ΔL2 / ΔL3 = 1.28. It is understood that the total optical system length TTL1 of the camera module 40 can be reduced, which facilitates the miniaturization of the camera module 40. Furthermore, the camera module 40 has a faster focusing speed, higher imaging quality, a wider range of applicable scenarios, a wider target user base, and a better user experience.

[0187] Furthermore, the smaller size Sa of the first reflective element 458a can reduce the length of the camera module 40 in the first direction, thereby reducing the volume of the camera module 40. When the camera module 40 is applied to the camera module 40 or the electronic device 100, it is beneficial to achieve an ultra-thin configuration of the camera module 40 or the electronic device 100.

[0188] FIG7 is a schematic diagram of the imaging optical distortion of the camera module 40 according to the first embodiment. In the coordinate system of FIG7 , the horizontal axis represents the percentage of optical distortion, and the vertical axis represents the field of view (FOV,°). It should be noted that in this application, when the horizontal and vertical coordinates appear again in subsequent coordinate systems, they will not be repeated.

[0189] As shown in FIG7 , the optical distortion ratio of the camera module 40 of the first embodiment of the present application is less than 1% at different field angles, the optical distortion degree of the image is small, and the imaging quality of the camera module 40 is high.

[0190] Second embodiment: Please refer to Figures 8 and 9. Figure 8 is a simplified schematic diagram of the partial structure of another embodiment of the wide-angle end of the camera module 40 shown in Figure 2. Figure 9 is a simplified schematic diagram of the partial structure of another embodiment of the telephoto end of the camera module 40 shown in Figure 2. In this embodiment, the camera module 40 has seven lenses. The camera module 40 includes a first lens 451, a second lens 452, a first reflective element 458a, a third lens 453, a fourth lens 454, a fifth lens 455, a sixth lens 456, a seventh lens 457, a filter 44 and a photosensitive chip 43, which are arranged in sequence from the object side to the image side. The first lens 451, the third lens 453, the fifth lens 455 and the sixth lens 456 all have positive optical power. The second lens 452, the fourth lens 454 and the seventh lens 457 all have negative optical power.

[0191] In this embodiment, the first lens 451 and the second lens 452 may constitute a first lens group G1, the third lens 453, the fourth lens 454, and the fifth lens 455 may constitute a second lens group G2, and the sixth lens 456 and the seventh lens 457 may constitute a third lens group G3.

[0192] In this embodiment, the first lens 451 satisfies: Nd = 1.64, Vd = 23.5. It can be understood that the light penetrating power of the first lens 451 is strong, and the optical quality of the first lens 451 is high, so that the image captured by the camera module 40 is clearer.

[0193] Some design parameters of the camera module 40 of the second embodiment of the present application are shown in Table 4 below.

[0194] Table 4 Partial design parameters of each lens of the camera module 40 of the second embodiment

[0195] In addition, the aspheric coefficients of each lens of the camera module 40 of the second embodiment of the present application are shown in Table 5 below.

[0196] Table 5 Aspheric coefficients of each lens of the camera module 40 of the second embodiment

[0197] Among them, A2, A4, A6, A8, A 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 and A 24The polynomial coefficients not in the table (such as A1, A3, etc.) are all 0. NormR represents the normalized radius of the object-side and image-side surfaces of the first to seventh lenses 451 to 457.

[0198] It is understood that among the 14 aspheric surfaces of the camera module 40 shown in Tables 4 and 5, the surface types z of all even-order and odd-order aspheric surfaces can be defined using, but not limited to, the following aspheric surface formula:

[0199] Among them, z is the aspheric height, r is the radial coordinate of the aspheric surface, c is the vertex curvature of the aspheric surface, K is the quadratic surface constant, A i Substituting the design parameters of the first lens 451 to the seventh lens 457 of the camera module 40 into the above-mentioned aspheric surface formula, the object-side and image-side surface shapes of the first lens 451 to the seventh lens 457 of the camera module 40 according to the second embodiment of the present application can be obtained.

[0200] Based on the data in Table 4 and Table 5, some parameters of the camera module 40 of the second embodiment of the present application can be obtained as shown in Table 6 below.

[0201] Table 6 Partial parameters of the camera module 40 of the second embodiment

[0202] The focal length EFLT at the telephoto end of the camera module 40 satisfies: EFLT = 24.00 mm. The aperture number Fno at the wide-angle end of the camera module 40 satisfies: Fno = 3.26. The total system length TTL1 of the camera module 40 satisfies: TTL1 = 33.32 mm. The dimension Sa of the first reflective element 458a of the camera module 40 satisfies: Sa = 3.50 mm. The image height IH of the camera module 40 satisfies: IH = 3.60 mm.

[0203] It is understood that the focal length f1 of the first lens group G1 of the camera module 40 satisfies: f1 = -55.05, the focal length f2 of the second lens group G2 of the camera module 40 satisfies: f1 = 10.79, and the focal length f3 of the third lens group G3 of the camera module 40 satisfies: f3 = -14.27.

[0204] Then, the focal length f1 of the first lens group G1 of the camera module 40 and the focal length f2 of the second lens group G2 of the camera module 40 satisfy: f1 / f2 = -5.10. The focal length f2 of the second lens group G2 of the camera module 40 and the focal length f3 of the third lens group G3 of the camera module 40 satisfy: f2 / f3 = -0.76. It can be understood that the distribution between the focal length f1 of the first lens group G1, the focal length f2 of the second lens group G2, and the focal length f3 of the third lens group G3 is relatively reasonable, and the camera module 40 can achieve a wide range of continuous zoom ratios.

[0205] It can be understood that the ratio of the image height IH of the camera module 40 and the focal length at the wide-angle end, that is, IH / EFLT = 0.15, it can be understood that the target surface of the camera module 40 is larger, and a larger and more comprehensive chip can be set on the target surface of the camera module 40 to improve the shooting performance of the camera module 40.

[0206] It is understood that the focal length EFLT at the telephoto end of the camera module 40 and the focal length EFLW at the wide-angle end of the camera module 40 satisfy the relationship EFLT / EFLW = 2.00. It is understood that the wide range of EFLT / EFLW values ​​of the camera module 40 allows for a wide range of zoom ratios and magnifications, thereby improving the imaging quality of the camera module 40.

[0207] It is understood that the total system length TTL1 of the camera module 40 and the focal length EFLT at the telephoto end of the camera module 40 satisfy the following relationship: TTL1 / EFLT = 1.39. It is also understood that the range of values ​​for TTL1 / EFLT of the camera module 40 is relatively small. Thus, the total optical system length TTL1 of the camera module 40 is relatively small, which facilitates the miniaturization of the camera module 40.

[0208] It is understood that the aperture number Fno at the wide-angle end of the camera module 40 is smaller, that is, the aperture at the wide-angle end of the camera module 40 is larger. In this way, the large aperture characteristic of the camera module 40 can be achieved, ensuring the high resolution and zoom continuity of the camera module 40.

[0209] It is understood that the focusing stroke ΔL2 of the second lens group G2 of the camera module 40 and the focusing stroke ΔL3 of the third lens group G3 of the camera module 40 satisfy: ΔL2 / ΔL3 = 1.58. It is understood that the total optical system length TTL1 of the camera module 40 can be reduced, which facilitates the miniaturization of the camera module 40. Furthermore, the camera module 40 has a faster focusing speed, higher imaging quality, a wider range of applicable scenarios, a wider target user base, and a better user experience.

[0210] Furthermore, the smaller size Sa of the first reflective element 458a can reduce the length of the camera module 40 in the first direction, thereby reducing the volume of the camera module 40. When the camera module 40 is applied to the camera module 40 or the electronic device 100, it is beneficial to achieve an ultra-thin configuration of the camera module 40 or the electronic device 100.

[0211] FIG10 is a schematic diagram of imaging optical distortion of the camera module 40 according to the second embodiment.

[0212] As shown in FIG10 , the optical distortion ratio of the camera module 40 of the second embodiment of the present application is less than 2% at different field angles, the optical distortion degree of the image is small, and the imaging quality of the camera module 40 is high.

[0213] Third embodiment: Please refer to Figures 11 and 12. Figure 11 is a simplified schematic diagram of the partial structure of another embodiment of the wide-angle end of the camera module 40 shown in Figure 2. Figure 12 is a simplified schematic diagram of the partial structure of another embodiment of the telephoto end of the camera module 40 shown in Figure 2. In this embodiment, the camera module 40 has seven lenses. The camera module 40 includes a first lens 451, a second lens 452, a first reflective element 458a, a third lens 453, a fourth lens 454, a fifth lens 455, a sixth lens 456, a seventh lens 457, a filter 44 and a photosensitive chip 43, which are arranged in sequence from the object side to the image side. The first lens 451, the third lens 453, the fourth lens 454 and the sixth lens 456 all have positive optical power. The second lens 452, the fifth lens 455 and the seventh lens 457 all have negative optical power.

[0214] It is understood that the first lens 451 and the second lens 452 may constitute a first lens group G1, the third lens 453, the fourth lens 454, and the fifth lens 455 may constitute a second lens group G2, and the sixth lens 456 and the seventh lens 457 may constitute a third lens group G3.

[0215] It is understood that the first lens 451 satisfies: Nd = 1.64, Vd = 23.5. It is understood that the light penetrating power of the first lens 451 is strong, and the optical quality of the first lens 451 is high, so that the image captured by the camera module 40 is clearer.

[0216] Some design parameters of the camera module 40 of the third embodiment of the present application are shown in Table 7 below.

[0217] Table 7 Partial design parameters of each lens of the camera module 40 in the third embodiment

[0218] In addition, the aspheric coefficients of each lens of the camera module 40 of the third embodiment of the present application are shown in Table 8 below.

[0219] Table 8 Aspheric coefficients of each lens of the camera module 40 in the third embodiment

[0220] Among them, A2, A4, A6, A8, A 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 and A 24 Indicates the aspheric coefficient. Polynomial coefficients not in the table (such as A1, A3, etc.) are all 0.

[0221] It is understood that among the 14 aspheric surfaces of the camera module 40 shown in Tables 7 and 8, the surface types z of all even-order and odd-order aspheric surfaces can be defined using, but not limited to, the following aspheric surface formula:

[0222] Among them, z is the aspheric height, r is the radial coordinate of the aspheric surface, c is the vertex curvature of the aspheric surface, K is the quadratic surface constant, A i Substituting the design parameters of the first lens 451 to the seventh lens 457 of the camera module 40 into the above-mentioned aspheric surface formula, the object-side and image-side surface shapes of the first lens 451 to the seventh lens 457 of the camera module 40 according to the third embodiment of the present application can be obtained.

[0223] Based on the data in Table 7 and Table 8, some parameters of the camera module 40 of the third embodiment of the present application can be obtained as shown in Table 9 below.

[0224] Table 9 Partial parameters of the camera module 40 of the third embodiment

[0225] The focal length EFLT at the telephoto end of the camera module 40 satisfies: EFLT = 24.00 mm. The aperture number Fno at the wide-angle end of the camera module 40 satisfies: Fno = 3.26. The total system length TTL1 of the camera module 40 satisfies: TTL1 = 33.32 mm. The dimension Sa of the first reflective element 458a of the camera module 40 satisfies: Sa = 3.50 mm. The image height IH of the camera module 40 satisfies: IH = 3.60 mm.

[0226] It is understood that the focal length f1 of the first lens group G1 of the camera module 40 satisfies: f1 = -64.61. The focal length f2 of the second lens group G2 of the camera module 40 satisfies: f1 = 11.04. The focal length f3 of the third lens group G3 of the camera module 40 satisfies: f3 = -14.81.

[0227] Then, the focal length f1 of the first lens group G1 of the camera module 40 and the focal length f2 of the second lens group G2 of the camera module 40 satisfy: f1 / f2 = -5.85. The focal length f2 of the second lens group G2 of the camera module 40 and the focal length f3 of the third lens group G3 of the camera module 40 satisfy: f2 / f3 = -0.75. It can be understood that the distribution between the focal length f1 of the first lens group G1, the focal length f2 of the second lens group G2, and the focal length f3 of the third lens group G3 is relatively reasonable, and the camera module 40 can achieve a wide range of continuous zoom ratios.

[0228] It can be understood that the ratio of the image height IH of the camera module 40 and the focal length at the wide-angle end, that is, IH / EFLT = 0.15, it can be understood that the target surface of the camera module 40 is larger, and a larger and more comprehensive chip can be set on the target surface of the camera module 40 to improve the shooting performance of the camera module 40.

[0229] It is understood that the focal length EFLT at the telephoto end of the camera module 40 and the focal length EFLW at the wide-angle end of the camera module 40 satisfy the relationship EFLT / EFLW = 2.00. It is understood that the wide range of EFLT / EFLW values ​​of the camera module 40 allows for a wide range of zoom ratios and magnifications, thereby improving the imaging quality of the camera module 40.

[0230] It is understood that the total system length TTL1 of the camera module 40 and the focal length EFLT at the telephoto end of the camera module 40 satisfy the following relationship: TTL1 / EFLT = 1.35. It is also understood that the range of values ​​for TTL1 / EFLT of the camera module 40 is relatively small. Thus, the total optical system length TTL1 of the camera module 40 is relatively small, which facilitates the miniaturization of the camera module 40.

[0231] It is understood that the aperture number Fno at the wide-angle end of the camera module 40 is smaller, that is, the aperture at the wide-angle end of the camera module 40 is larger. In this way, the large aperture characteristic of the camera module 40 can be achieved, ensuring the high resolution and zoom continuity of the camera module 40.

[0232] It is understandable that the focusing stroke △L2 of the second lens group G2 of the camera module 40 and the focusing stroke △L3 of the third lens group G3 of the camera module 40 satisfy: △L2 / △L3=1.95. It is understandable that the total length TTL1 of the optical system of the camera module 40 can be smaller, which helps to achieve the miniaturization of the camera module 40. In addition, the focusing speed of the camera module 40 is faster, the imaging quality of the camera module 40 is higher, the range of applicable scenes is larger, the target user group is wider, and the user experience is better. In addition, the size Sa of the first reflective element 458a is small, which can reduce the length of the camera module 40 in the first direction, thereby reducing the volume of the camera module 40. When the camera module 40 is applied to the camera module 40 or the electronic device 100, it is conducive to achieving the ultra-thin setting of the camera module 40 or the electronic device 100.

[0233] FIG13 is a schematic diagram of imaging optical distortion of the camera module 40 according to the third embodiment.

[0234] As shown in FIG13 , the optical distortion ratio of the camera module 40 in the third embodiment of the present application is less than 2% at different field angles, the optical distortion degree of the image is small, and the imaging quality of the camera module 40 is high.

[0235] Fourth embodiment: Referring to Figures 5 and 6 , in this embodiment, the camera module 40 comprises seven lenses. The camera module 40 includes, arranged in order from the object side to the image side, a first lens 451, a second lens 452, a first reflective element 458a, a third lens 453, a fourth lens 454, a fifth lens 455, a sixth lens 456, a seventh lens 457, a filter 44, and a photosensitive chip 43. The first lens 451, the third lens 453, the fifth lens 455, and the seventh lens 457 all have positive optical power. The second lens 452, the fourth lens 454, and the sixth lens 456 all have negative optical power.

[0236] In this embodiment, the first lens 451 and the second lens 452 may constitute a first lens group G1, the third lens 453 and the fourth lens 454 may constitute a second lens group G2, and the fifth lens 455 and the sixth lens 456 may constitute a third lens group G3.

[0237] In this embodiment, the first lens 451 satisfies: Nd = 1.64, Vd = 23.5. It can be understood that the light penetrating power of the first lens 451 is strong, and the optical quality of the first lens 451 is high, so that the image captured by the camera module 40 is clearer.

[0238] In this embodiment, the imaging module 40 further includes a fourth lens group G4, and the seventh lens 547 can form the fourth lens group G4. The fourth lens group G4 is a fixed lens group. Exemplarily, the seventh lens 457 can form the fourth lens group G4. The focal length f4 of the fourth lens group G4 can satisfy: 27 < f4 < 30. It can be understood that the fourth lens group G4 can have a positive optical power and can be used to converge the light rays diverged by the third lens group G3, so that the light rays can be better imaged on the imaging surface, improving the imaging quality of the imaging module 40.

[0239] Some design parameters of the imaging module 40 according to the fourth embodiment of the present application are shown in Table 10 below.

[0240] Table 10 Partial design parameters of each lens of the imaging module 40 according to the fourth embodiment

[0241] In addition, the aspherical coefficients of each lens of the imaging module 40 according to the fourth embodiment of the present application are shown in Table 11 below.

[0242] Table 11 Aspherical coefficients of each lens of the imaging module 40 according to the fourth embodiment

[0243] Among them, A2, A4, A6, A8, A 10 , A 12 , A 14 , A 16 , A 18 , A 20 and A 22 represent aspherical coefficients. The polynomial coefficients that do not exist in the table (such as A1, A3, etc.) are all 0.

[0244] It can be understood that among the 14 aspherical surfaces of the imaging module 40 shown in Table 10 and Table 11, the aspherical surface types z of all even and odd aspherical surfaces can be defined by but not limited to the following aspherical formula:

[0245] where z is the sag of the aspherical surface, r is the radial coordinate of the aspherical surface, c is the vertex spherical curvature of the aspherical surface, K is the conic constant, and A i represents the i-th order aspherical coefficient. Substituting the design parameters of the first lens 451 to the seventh lens 457 of the imaging module 40 into the above aspherical formula, the surface types of the object side and the image side of the first lens 451 to the seventh lens 457 of the imaging module 40 according to the fourth embodiment of the present application can be obtained.

[0246] According to the data in Table 10 and Table 11, some parameters of the imaging module 40 according to the fourth embodiment of the present application are shown in Table 12 below.

[0247] Table 12 Partial parameters of the camera module 40 of the fourth embodiment

[0248] The focal length EFLT of the telephoto end of the camera module 40 satisfies: EFLT = 24.00 mm. The aperture number Fno of the wide-angle end of the camera module 40 satisfies: Fno = 3.26. The total system length TTL1 of the camera module 40 satisfies: TTL1 = 33.30 mm. The dimension Sa of the first reflective element 458a of the camera module 40 satisfies: Sa = 3.50 mm. The image height IH of the camera module 40 satisfies: IH = 3.60 mm.

[0249] It is understood that the focal length f1 of the first lens group G1 of the camera module 40 satisfies: f1 = -40.62. The focal length f2 of the second lens group G2 of the camera module 40 satisfies: f1 = 11.36. The focal length f3 of the third lens group G3 of the camera module 40 satisfies: f3 = -18.52. The focal length f4 of the fourth lens group G4 of the camera module 40 satisfies: f4 = 28.39.

[0250] Then, the focal length f1 of the first lens group G1 of the camera module 40 and the focal length f2 of the second lens group G2 of the camera module 40 satisfy: f1 / f2 = -3.58. The focal length f2 of the second lens group G2 of the camera module 40 and the focal length f3 of the third lens group G3 of the camera module 40 satisfy: f2 / f3 = -0.61. It can be understood that the distribution between the focal length f1 of the first lens group G1, the focal length f2 of the second lens group G2, and the focal length f3 of the third lens group G3 is relatively reasonable, and the camera module 40 can achieve a wide range of continuous zoom ratios.

[0251] It can be understood that the ratio of the image height IH of the camera module 40 and the focal length at the wide-angle end, that is, IH / EFLT = 0.15, it can be understood that the target surface of the camera module 40 is larger, and a larger and more comprehensive chip can be set on the target surface of the camera module 40 to improve the shooting performance of the camera module 40.

[0252] It is understood that the focal length EFLT at the telephoto end of the camera module 40 and the focal length EFLW at the wide-angle end of the camera module 40 satisfy the relationship EFLT / EFLW = 2.00. It is understood that the wide range of EFLT / EFLW values ​​of the camera module 40 allows for a wide range of zoom ratios and magnifications, thereby improving the imaging quality of the camera module 40.

[0253] It is understood that the total system length TTL1 of the camera module 40 and the focal length EFLT at the telephoto end of the camera module 40 satisfy the following relationship: TTL1 / EFLT = 1.39. It is also understood that the range of values ​​for TTL1 / EFLT of the camera module 40 is relatively small. Thus, the total optical system length TTL1 of the camera module 40 is relatively small, which facilitates the miniaturization of the camera module 40.

[0254] It is understood that the aperture number Fno at the wide-angle end of the camera module 40 is smaller, that is, the aperture at the wide-angle end of the camera module 40 is larger. In this way, the large aperture characteristic of the camera module 40 can be achieved, ensuring the high resolution and zoom continuity of the camera module 40.

[0255] It is understood that the focusing stroke ΔL2 of the second lens group G2 of the camera module 40 and the focusing stroke ΔL3 of the third lens group G3 of the camera module 40 satisfy: ΔL2 / ΔL3 = 2.82. It is understood that the total optical system length TTL1 of the camera module 40 can be reduced, which facilitates the miniaturization of the camera module 40. Furthermore, the camera module 40 has a faster focusing speed, higher imaging quality, a wider range of applicable scenarios, a wider target user base, and a better user experience.

[0256] Furthermore, the smaller size Sa of the first reflective element 458a can reduce the length of the camera module 40 in the first direction, thereby reducing the volume of the camera module 40. When the camera module 40 is applied to the camera module 40 or the electronic device 100, it is beneficial to achieve an ultra-thin configuration of the camera module 40 or the electronic device 100.

[0257] FIG14 is a schematic diagram of imaging optical distortion of a camera module 40 according to a fourth embodiment.

[0258] As shown in FIG14 , the optical distortion ratio of the camera module 40 in the fourth embodiment of the present application is less than 2% at different field angles, the degree of optical distortion of the image is small, and the imaging quality of the camera module 40 is high.

[0259] Fifth embodiment: Please refer to Figures 15 and 16. Figure 15 is a simplified schematic diagram of the partial structure of another embodiment of the wide-angle end of the camera module 40 shown in Figure 2. Figure 16 is a simplified schematic diagram of the partial structure of another embodiment of the telephoto end of the camera module 40 shown in Figure 2. In this embodiment, the camera module 40 has six lenses. The camera module 40 includes a first lens 451, a second lens 452, a first reflective element 458a, a third lens 453, a fourth lens 454, a fifth lens 455, a sixth lens 456, a filter 44 and a photosensitive chip 43 arranged in sequence from the object side to the image side. The first lens 451, the third lens 453 and the fifth lens 455 all have positive optical power. The second lens 452, the fourth lens 454 and the sixth lens 456 all have negative optical power.

[0260] In this embodiment, the first lens 451 and the second lens 452 may constitute a first lens group G1, the third lens 453 and the fourth lens 454 may constitute a second lens group G2, and the fifth lens 455 and the sixth lens 456 may constitute a third lens group G3.

[0261] In this embodiment, the first lens 451 satisfies: Nd = 1.64, Vd = 23.5. It can be understood that the light penetrating power of the first lens 451 is strong, and the optical quality of the first lens 451 is high, so that the image captured by the camera module 40 is clearer.

[0262] It can be understood that in Table 13 and Table 14, S15 and S16 can represent the object-side surface and the image-side surface of the filter 44, respectively.

[0263] Some design parameters of the camera module 40 of the fifth embodiment of the present application are shown in Table 13 below.

[0264] Table 13 Partial design parameters of each lens of the camera module 40 of the fifth embodiment

[0265] Wherein, R is the radius of curvature of the first lens 451 to the sixth lens 456, the first reflective element 458a, and the optical filter 44 of the camera module 40. Nd is the material refractive index of the first lens 451 to the sixth lens 456, the first reflective element 458a, and the optical filter 44 of the camera module 40. Vd is the Abbe number of the first lens 451 to the sixth lens 456, the first reflective element 458a, and the optical filter 44 of the camera module 40.

[0266] In addition, Th is the thickness of the first lens 451 to the sixth lens 456 and the filter 44 of the camera module 40. The thickness S14 refers to the distance between the image side surface of the sixth lens 456 and the object side surface of the filter 44. The thickness S15 refers to the distance between the object side surface of the filter 44 and the image side surface of the filter 44. The thickness S16 refers to the distance between the image side surface and the imaging surface of the filter 44.

[0267] In addition, the aspheric coefficients of each lens of the camera module 40 of the fifth embodiment of the present application are shown in Table 14 below.

[0268] Table 14 Aspheric coefficients of each lens of the camera module 40 in the fifth embodiment

[0269] Among them, A2, A4, A6, A8, A 10 、A 12 、A 14 、A 16 、A 18 、A 20 and A 22 The polynomial coefficients not in the table (such as A1, A3, etc.) are all 0. Norm R represents the normalized radius of the object-side and image-side surfaces of the first to sixth lenses 451 to 456.

[0270] It is understood that among the 12 aspheric surfaces of the camera module 40 shown in Table 13 and Table 14, the surface types z of all even-order and odd-order aspheric surfaces can be defined using, but not limited to, the following aspheric surface formula:

[0271] Among them, z is the aspheric height, r is the radial coordinate of the aspheric surface, c is the vertex curvature of the aspheric surface, K is the quadratic surface constant, A i Substituting the design parameters of the first lens 451 to the sixth lens 456 of the camera module 40 into the above-mentioned aspheric surface formula, the object-side and image-side surface shapes of the first lens 451 to the sixth lens 456 of the camera module 40 of the fifth embodiment of the present application can be obtained.

[0272] Based on the data in Table 13 and Table 14, some parameters of the camera module 40 of the fifth embodiment of the present application can be obtained as shown in Table 15 below.

[0273] Table 15 Partial parameters of the camera module 40 of the fifth embodiment

[0274] The focal length EFLT at the telephoto end of the camera module 40 satisfies: EFLT = 24.00 mm. The aperture number Fno at the wide-angle end of the camera module 40 satisfies: Fno = 3.26. The total system length TTL1 of the camera module 40 satisfies: TTL1 = 33.32 mm. The dimension Sa of the first reflective element 458a of the camera module 40 satisfies: Sa = 3.50 mm. The image height IH of the camera module 40 satisfies: IH = 3.60 mm.

[0275] It is understood that the focal length f1 of the first lens group G1 of the camera module 40 satisfies: f1 = -55.05, the focal length f2 of the second lens group G2 of the camera module 40 satisfies: f1 = 10.79, and the focal length f3 of the third lens group G3 of the camera module 40 satisfies: f3 = -14.27.

[0276] Then, the focal length f1 of the first lens group G1 of the camera module 40 and the focal length f2 of the second lens group G2 of the camera module 40 satisfy: f1 / f2 = -8.54. The focal length f2 of the second lens group G2 of the camera module 40 and the focal length f3 of the third lens group G3 of the camera module 40 satisfy: f2 / f3 = -0.96. It can be understood that the distribution between the focal length f1 of the first lens group G1, the focal length f2 of the second lens group G2, and the focal length f3 of the third lens group G3 is relatively reasonable, and the camera module 40 can achieve a wide range of continuous zoom ratios.

[0277] It can be understood that the ratio of the image height IH of the camera module 40 and the focal length at the wide-angle end, that is, IH / EFLT = 0.15, it can be understood that the target surface of the camera module 40 is larger, and a larger and more comprehensive chip can be set on the target surface of the camera module 40 to improve the shooting performance of the camera module 40.

[0278] It is understood that the focal length EFLT at the telephoto end of the camera module 40 and the focal length EFLW at the wide-angle end of the camera module 40 satisfy the relationship EFLT / EFLW = 2.00. It is understood that the wide range of EFLT / EFLW values ​​of the camera module 40 allows for a wide range of zoom ratios and magnifications, thereby improving the imaging quality of the camera module 40.

[0279] It is understood that the total system length TTL1 of the camera module 40 and the focal length EFLT at the telephoto end of the camera module 40 satisfy the following relationship: TTL1 / EFLT = 1.33. It is also understood that the range of values ​​for TTL1 / EFLT of the camera module 40 is relatively small. Thus, the total optical system length TTL1 of the camera module 40 is relatively small, which facilitates the miniaturization of the camera module 40.

[0280] It is understood that the aperture number Fno at the wide-angle end of the camera module 40 is smaller, that is, the aperture at the wide-angle end of the camera module 40 is larger. In this way, the large aperture characteristic of the camera module 40 can be achieved, ensuring the high resolution and zoom continuity of the camera module 40.

[0281] It is understood that the focusing stroke ΔL2 of the second lens group G2 of the camera module 40 and the focusing stroke ΔL3 of the third lens group G3 of the camera module 40 satisfy: ΔL2 / ΔL3 = 2.65. It is understood that the total optical system length TTL1 of the camera module 40 can be reduced, which facilitates the miniaturization of the camera module 40. Furthermore, the camera module 40 has a faster focusing speed, higher imaging quality, a wider range of applicable scenarios, a wider target user base, and a better user experience.

[0282] Furthermore, the smaller size Sa of the first reflective element 458a can reduce the length of the camera module 40 in the first direction, thereby reducing the volume of the camera module 40. When the camera module 40 is applied to the camera module 40 or the electronic device 100, it is beneficial to achieve an ultra-thin configuration of the camera module 40 or the electronic device 100.

[0283] FIG17 is a schematic diagram of imaging optical distortion of the camera module 40 according to the fifth embodiment.

[0284] As shown in FIG17 , the optical distortion ratio of the camera module 40 of the fifth embodiment of the present application is less than 5% at different field angles, the optical distortion degree of the image is small, and the imaging quality of the camera module 40 is high.

[0285] FIG18 is a simplified schematic diagram of a partial structure of the camera module 40 shown in FIG2 in another embodiment.

[0286] As shown in FIG18 , the camera module 40 may further include a second reflective element 458 b. For example, the second reflective element 458 b may be located on the image side of the third lens group G3. In other words, the second reflective element 458 b may be located on a side of the third lens group G3 away from the second lens group G2.

[0287] Exemplarily, the second reflective element 458b is used to change the optical axis from the second direction to a third direction, where both the third direction and the first direction intersect with the second direction. It is understood that the second reflective element 458b allows the photosensitive chip 43 to have a larger target surface. Thus, a larger and more comprehensive chip can be installed on the target surface of the camera module 40, thereby improving the shooting performance of the camera module 40.

[0288] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other, and any combination of features in different embodiments is also within the scope of protection of this application. That is to say, the multiple embodiments described above can also be arbitrarily combined according to actual needs.

[0289] It should be noted that all the above drawings are illustrative illustrations of this application and do not represent the actual size of the product. The dimensional ratio relationship between the components in the drawings does not serve as a limitation on the actual product of this application. The above are only some of the embodiments and implementation methods of this application. The scope of protection of this application is not limited to this. Any person skilled in the art who is familiar with the technical scope disclosed in this application can easily think of changes or replacements, which should be covered by the scope of protection of this application. Therefore, the scope of protection of this application shall be based on the scope of protection of the claims.

Claims

1. A camera module, characterized in that: It includes a first lens group, a first reflecting element, a second lens group, a third lens group, and a photosensitive chip arranged in sequence from the object side to the image side. The first lens group is a fixed lens group. The first reflecting element is used to change the optical axis in the first direction to the second direction, and the first direction intersects with the second direction. The imaging module further includes a first driving mechanism and a second driving mechanism. The first driving mechanism is connected to the second lens group, and the first driving mechanism is used to drive the second lens group to move along the optical axis in the second direction. The second driving mechanism is connected to the third lens group, and the second driving mechanism is used to drive the third lens group to move along the optical axis in the second direction.

2. The camera module according to claim 1, wherein: The first lens group and the third lens group have negative optical powers, and the second lens group has positive optical power. The focal length f1 of the first lens group, the focal length f2 of the second lens group, and the focal length f3 of the third lens group satisfy: f1 / f2 < -3, -1 < f2 / f3 < -0.

5.

3. The camera module according to claim 2, wherein: The focal length f1 of the first lens group satisfies: -40 < f1 < -30; and / or, the focal length f2 of the second lens group satisfies: 7 < f2 < 12; and / or, the focal length f3 of the third lens group satisfies: -18 < f3 < -12.

4. The camera module according to any one of claims 1 to 3, characterized in that: The first lens group includes a first lens, the first lens has positive optical power, and the object side surface of the first lens is convex.

5. The camera module according to claim 4, wherein: The material of the first lens satisfies: Nd < 1.65, Vd > 50; where Nd is the refractive index of the material and Vd is the Abbe number.

6. The camera module according to claim 4 or 5, characterized in that: The first lens group includes a second lens, and the second lens is located on the image side of the first lens. The focal length f11 of the first lens satisfies: f11 > 0, and the focal length f12 of the second lens satisfies: f12 < 0.

7. The camera module according to any one of claims 1 to 6, characterized in that: The second lens group includes a third lens, a fourth lens, and a fifth lens, and at least one of the third lens, the fourth lens, and the fifth lens has negative optical power.

8. The camera module according to any one of claims 1 to 7, characterized in that: The optical lens further includes an aperture, and the aperture is located between the first lens group and the second lens group.

9. The camera module according to any one of claims 1 to 8, characterized in that: The imaging module satisfies: 0.1 ≤ IH / EFLT ≤ 0.5; where IH is the image height of the imaging module and EFLT is the focal length of the telephoto end of the imaging module.

10. The camera module according to any one of claims 1 to 9, characterized in that: The imaging module further includes a fourth lens group, the fourth lens group is located on the image side of the third lens group, and the fourth lens group has positive optical power.

11. The camera module according to claim 10, wherein: The fourth lens group is a fixed lens group.

12. The camera module according to any one of claims 1 to 11, characterized in that: The imaging module further includes a second reflecting element, the second reflecting element is located between the third lens group and the filter, and the second reflecting element is used to change the optical axis in the second direction to the third direction, and the third direction and the first direction both intersect with the second direction.

13. The camera module according to any one of claims 1 to 12, characterized in that: When the imaging module is at the wide-angle end, the first driving mechanism drives the second lens group to move in a direction away from the first reflecting element, and the second driving mechanism drives the third lens group to move in a direction away from the first reflecting element. When the camera module is at the telephoto end, the first driving mechanism drives the second lens group to move toward the direction close to the first reflecting element, and the second driving mechanism drives the third lens group to move toward the direction close to the first reflecting element.

14. The camera module according to claims 1 to 13, characterized in that: The focal length EFLT at the telephoto end and the focal length EFLW at the wide-angle end satisfy the following: 1.2≤EFLT / EFLW≤3.

15. The camera module according to any one of claims 1 to 14, characterized in that: The camera module satisfies: 0.6≤TTL1 / EFLT≤1.8; wherein TTL1 is the distance from the vertex where the object side surface of the first reflective element intersects the reflective surface to the imaging surface in the optical axis direction of the camera module.

16. The camera module according to any one of claims 1 to 15, characterized in that: The wide-angle end of the camera module satisfies: 1.4≤Fno≤4; wherein Fno is the aperture number of the wide-angle end of the camera module.

17. The camera module according to any one of claims 1 to 16, characterized in that: The camera module satisfies: 1≤△L2 / △L3≤2, and 0.1≤△L2 / TTL1≤0.3; wherein, △L2 is the stroke of the second lens group moving along the optical axis of the second direction, and △L3 is the stroke of the third lens group moving along the optical axis of the second direction.

18. The camera module according to any one of claims 1 to 17, characterized in that: The zoom ratio of the camera module is in the range of three times to five times.

19. The camera module according to any one of claims 1 to 18, characterized in that: The equivalent focal length of the camera module is in the range of 70 mm to 120 mm.

20. An electronic device, characterized in that: It comprises a shell and a camera module as described in any one of claims 1 to 18, wherein the camera module is installed in the shell.

Images