Camera module and electronic equipment

Abstract

The invention provides a camera module and electronic equipment. 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 sequentially arranged from an object side to an image side, the first lens group is a fixed lens group, the first reflecting element is used for changing an optical axis in a first direction to a second direction, and the first direction intersects with the second direction; the camera module further comprises a first driving mechanism and a second driving mechanism. The first driving mechanism is connected with the second lens group and is used for driving the second lens group to move along the optical axis in the second direction; and the second driving mechanism is connected with the third lens group and is used for driving the third lens group to move along the optical axis in the second direction. Therefore, the camera module has a wider continuous zooming range, thereby realizing wider-angle end shooting in a larger distance and far-focus end shooting in a longer distance.

Description

Technical Field

[0001] The present application relates to the field of lenses, and particularly to an imaging module and an electronic device. Background Art

[0002] With the continuous development of portable electronic devices such as mobile phones, users have higher and higher requirements for the photographing performance of the imaging modules of portable electronic devices. In order to meet the shooting needs of users, periscope cameras have become the development trend of imaging modules. However, the existing periscope cameras still have the problem of a relatively narrow continuous zoom range. Summary of the Invention

[0003] The present application provides an imaging module and an electronic device with a wider continuous zoom range.

[0004] In a first aspect, the present application provides an imaging module. The imaging module includes a first lens group, a first reflection element, a second lens group, a third lens group, and an image sensor chip arranged in sequence from the object side to the image side. The first lens group is a fixed lens group. The first reflection element is used to change the optical axis in a first direction to a second direction, and the first direction intersects 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.

[0005] 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 imaging module has a wider continuous zoom range, thereby realizing a more macro wide-angle end shooting and a farther distance telephoto end shooting.

[0006] When the imaging module is applied to an electronic device such as a mobile phone, the electronic device also has a wider continuous zoom range and can be used for shooting and recording images. The imaging module includes various complex shooting application scenarios, such as indoor and outdoor; it also includes diverse shooting objects, such as people and environments. The applicable scenario range and target audience of the imaging module are wider, which can meet different shooting needs and improve the user experience.

[0007] 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.

[0008] 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. 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 can be realized.

[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. 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 conducive to realizing the miniaturized setting of the imaging module.

[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 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 amount of light entering the imaging module, thereby improving the imaging quality 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, 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 conducive to reducing the volume of the imaging module and further being conducive to realizing the miniaturized setting of the imaging module.

[0012] 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.

[0013] 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. 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 can be realized.

[0014] It can be understood that, due to the reasonable 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, 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 is small, the aperture number Fno at the wide-angle end of the imaging module is small, the focusing stroke ΔL2 of the second lens group moving along the optical axis in the second direction and the focusing stroke ΔL3 of the third lens group moving along the optical axis in the second direction are both small, and the ratio of the focusing stroke ΔL2 of the second lens group moving along the optical axis in the second direction to the total optical length TTL1 of the imaging module is small. In this way, it is beneficial to improve the imaging quality of the imaging module and achieve the miniaturization and thinning of the imaging module.

[0015] In a possible implementation, the first lens group includes a first lens, the first lens has a positive optical power, and the object side surface of the first lens is a convex surface.

[0016] It can be understood that the first lens can be used to converge the light in the external environment, so that the diameter of the light beam entering the imaging module is small, and the apertures of the second lens group and the third lens group are no longer the maximum limit of the light passing aperture, thereby effectively increasing the light passing aperture of the imaging module.

[0017] In a possible implementation, 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. It can be understood that the refractive index of the first lens of the imaging module is small, the Abbe number is large, and the light transmittance of the lens of the first lens is high. In this way, the light penetration ability of the lens of the first lens is strong, the optical quality of the first lens is high, and the image captured by the imaging module is clearer.

[0018] In a possible implementation, the first lens group includes a second lens, 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.

[0019] It can be understood that the first lens can converge the light, and the second lens can diverge the light. The first lens group composed of the first lens and the second lens can diverge the light. It can be understood that the second lens is used in cooperation with the first lens to form a positive and negative lens cooperation structure, which can better solve aberration problems such as chromatic aberration, the imaging module has higher freedom, and the imaging quality is better.

[0020] 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 a negative optical power.

[0021] It can be understood that the third lens, the fourth lens, and the fifth lens endow the second lens group with a positive optical power, making the distribution of the optical power between the second lens group, the first lens group, and the third lens group more reasonable. The refractive index, Abbe number, shape, thickness, and air gap of the third lens to the fifth lens can achieve a good balance among aberration, volume, cost, thermal reliability, etc., and realize a wide range of continuous zoom ratios of the imaging module.

[0022] It can be understood that the 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 is more reasonable due to the third lens to the fifth lens. Therefore, it is beneficial to reduce 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, thereby facilitating the reduction of the length of the imaging module in the second direction and further facilitating the miniaturization setting of the imaging module.

[0023] It can be understood that the 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 is more reasonable due to the third lens to the fifth lens. Therefore, the aperture number Fno at the wide-angle end of the imaging module is smaller and has a wider value range, that is, it is beneficial to have a larger aperture number at the wide-angle end of the imaging module, thereby facilitating the increase of the light input amount of the imaging module and further facilitating the improvement of the imaging quality of the imaging module.

[0024] It can be understood that the 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 is more reasonable due to the third lens to the fifth lens. Therefore, both the travel △L2 of the second lens group moving along the optical axis in the second direction and the focusing travel △L3 of the third lens group moving along the optical axis in the second direction are smaller, and the travel △L2 of the second lens group moving along the optical axis in the second direction is smaller relative to the total system length TTL1 of the imaging module, thereby facilitating the reduction of the length of the imaging module in the second direction and further facilitating the miniaturization setting of the imaging module.

[0025] In a possible implementation, the optical lens further includes a diaphragm, and the diaphragm is located between the first lens group and the second lens group.

[0026] It can be understood that when the diaphragm is located between the second lens and the third lens, the diaphragm can achieve the effect of a large aperture at both the wide-angle end and the telephoto end of the imaging module. In addition, the number of lenses for correcting aberration in the imaging module of this embodiment is relatively large, which is beneficial to obtaining better imaging quality. Moreover, when the diaphragm is located between the second lens and the third lens, it is convenient to correct the diaphragm aberration.

[0027] In a possible implementation, the camera module satisfies: 0.1 ≤ IH / EFLT ≤ 0.5; where IH is the image height of the camera module, and EFLT is the focal length of the telephoto end of the camera module. It can be understood that the larger the image height IH of the camera module, the larger the target surface of the camera module. In this way, a chip with a larger volume and more comprehensive functions can be set on the target surface of the camera module to improve the shooting performance of the camera module.

[0028] In a possible implementation, the camera 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 a positive optical power. It can be understood that the fourth lens group can converge the light rays diverged by the third lens group and can be used to effectively compensate for the image quality and improve the imaging quality of the camera module.

[0029] In a possible implementation, the fourth lens group is a fixed lens group. It can be understood that the fourth lens group enables the light rays to form an image on the imaging surface and improves the imaging quality of the camera module.

[0030] In a possible implementation, the camera module further includes a second reflecting element. The second reflecting element is located between the third lens group and the filter. The second reflecting element is used to change the optical axis in the second direction to the third direction, and both the third direction and the first direction intersect with the second direction.

[0031] It can be understood that since the second reflecting element enables the photosensitive chip to have a larger target surface, in this way, a chip with a larger volume and more comprehensive functions can be set on the target surface of the camera module to improve the shooting performance of the camera module.

[0032] In a possible implementation, when the camera module is at the wide-angle end, the first driving mechanism drives the second lens group to move away from the first reflecting element, and the second driving mechanism drives the third lens group to move 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 closer to the first reflecting element, and the second driving mechanism drives the third lens group to move closer to the first reflecting element.

[0033] 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 wide continuous zoom range, can achieve focusing and autofocus at different zoom ratios, and improves the shooting quality of the camera module at the wide-angle end and the telephoto end.

[0034] 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.

[0035] It can be understood that, due to the reasonable distribution of the focal lengths among the first lens group to the third lens group 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, that is, the value range of EFLT / EFLW, is relatively wide, and both the zoom ratio and the zoom magnification range of the camera module are relatively large, which can improve the imaging quality of the camera module. Of course, other values can also be selected for EFLT / EFLW according to actual needs.

[0036] In a possible implementation manner, the camera module satisfies: 0.6 ≤ TTL1 / EFLT ≤ 1.8; where TTL1 is the distance from the vertex where the object side of the first reflecting element intersects the reflecting surface to the imaging surface in the optical axis direction of the camera module.

[0037] It can be understood that, due to the reasonable distribution of the focal lengths among the first lens group to the third lens group of the camera module, the ratio of the total system length TTL1 of the camera module to the focal length EFLT at the telephoto end of the camera module, that is, the value range of TTL1 / EFLW, is relatively small. In this way, the total system length TTL1 of the camera module is smaller, which is beneficial to reducing the length of the camera module in the second direction and facilitating the miniaturization setting of the camera module.

[0038] In a possible implementation manner, 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.

[0039] It can be understood 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. In this way, the characteristic of a large aperture of the camera module can be realized, enabling more light to enter the camera module. In addition, it can also ensure the high resolution and zoom continuity of the camera module.

[0040] In a possible implementation manner, the camera module satisfies: 1 ≤ △L2 / △L3 ≤ 2, and 0.1 ≤ △L2 / TTL1 ≤ 0.3; where △L2 is the travel of the second lens group moving along the optical axis in the second direction, and △L3 is the travel of the third lens group moving along the optical axis in the second direction.

[0041] It can be understood that, since the distribution of the focal lengths among the first lens group to the third lens group of the camera module is relatively reasonable, the focusing stroke ΔL2 of the second lens group moving along the optical axis can be greater than or equal to the focusing stroke ΔL3 of the third lens group moving along the optical axis, which can effectively avoid the collision between the second lens group and the third lens group during the focusing process. Moreover, the focusing stroke ΔL2 of the second lens group moving along the optical axis is relatively small compared to the total system length TTL1 of the camera module, and the focusing stroke ΔL3 of the third lens group moving along the optical axis is also relatively small compared to the total system length TTL1 of the camera module. In this way, the total system length TTL1 of the camera module can be relatively small, thereby reducing the length of the camera module in the second direction, that is, reducing the optical total length TTL1 of the camera module, which is beneficial to reducing the volume of the camera module and helps to achieve the miniaturized setting of the camera module. In addition, during the focusing process of the camera module, the second lens group and the third lens group only need a relatively small focusing stroke to complete the focusing process, the focusing and continuous zooming speed of the camera module is faster, the imaging quality of the camera module is higher, the applicable scene range is larger, the target user group is wider, and the user experience is better. Of course, other values can also be selected for ΔL2 / ΔL3 and ΔL2 / TTL1 according to actual needs.

[0042] In a possible implementation, the zoom ratio of the camera module is in the range of three times to five times.

[0043] It can be understood that the camera module can not only achieve shooting at the wide-angle end but also achieve shooting at the telephoto end, and can shoot diverse objects in various complex shooting application scenarios, expanding the applicable range of the camera module.

[0044] In a possible implementation, the equivalent focal length of the camera module is in the range of 70 millimeters to 120 millimeters.

[0045] It can be understood that within a relatively wide range of equivalent focal lengths, the camera module can achieve lossless optical zoom and has a relatively high imaging quality.

[0046] In a second aspect, the present application provides an electronic device, which includes a housing and the above-mentioned camera module, and the camera module is installed in the housing.

[0047] It can be understood that when the camera module is applied to an electronic device, the electronic device has a relatively wide continuous zoom range and a better user experience. While the camera module can achieve long-distance shooting of objects, it can also achieve continuous optical zoom with less impact on the 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 relatively small, that is, the length of the camera module in the thickness direction of the electronic device is relatively small, and the electronic device can achieve a thin-type setting. Description of the Drawings

[0048] Figure 1 It is a schematic structural diagram of an electronic device provided by an embodiment of the present application in an implementation manner;

[0049] Figure 2 is Figure 1 A partial cross-sectional schematic diagram of the electronic device shown in an implementation manner at the A-A line;

[0050] Figure 3 is Figure 2 A partial structural simplified schematic diagram of the camera module shown in an implementation manner;

[0051] Figure 4 is Figure 3 A partial structural simplified schematic diagram of the camera module shown in an implementation manner;

[0052] Figure 5 is Figure 2 A partial structural simplified schematic diagram of the camera module shown in another implementation manner at the wide-angle end;

[0053] Figure 6 is Figure 2 A partial structural simplified schematic diagram of the camera module shown in another implementation manner at the telephoto end;

[0054] Figure 7 It is a schematic diagram of imaging optical distortion of the camera module in the first implementation manner;

[0055] Figure 8 is Figure 2 A partial structural simplified schematic diagram of the wide-angle end of the camera module shown in another implementation manner Figure 1 ;

[0056] Figure 9 is Figure 2 A partial structural simplified schematic diagram of the telephoto end of the camera module shown in another implementation manner Figure 1 ;

[0057] Figure 10 It is a schematic diagram of imaging optical distortion of the camera module in the second implementation manner;

[0058] Figure 11 is Figure 2 A partial structural simplified schematic diagram of the wide-angle end of the camera module shown in another implementation manner Figure 2 ;

[0059] Figure 12 is Figure 2 A partial structural simplified schematic diagram of the telephoto end of the camera module shown in another implementation manner Figure 2 ;

[0060] Figure 13Schematic diagram of imaging optical distortion of the camera module in the third implementation mode;

[0061] Figure 14 Schematic diagram of imaging optical distortion of the camera module in the fourth implementation mode;

[0062] Figure 15 is Figure 2 Partial structure simplified schematic of another implementation mode at the wide-angle end of the camera module shown; Figure 3 ;

[0063] Figure 16 is Figure 2 Partial structure simplified schematic of another implementation mode at the telephoto end of the camera module shown; Figure 3 ;

[0064] Figure 17 Schematic diagram of imaging optical distortion of the camera module in the fifth implementation mode;

[0065] Figure 18 is Figure 2 Partial structure simplified schematic diagram of the camera module shown in another implementation mode. Specific implementation mode

[0066] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application.

[0067] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an electrical connection or a mechanical connection. Among them, "fixed connection" means that the two are connected and the relative position relationship after connection remains unchanged. In addition, the fact that two components are obtained as an integrated structure through an integral molding process means that during the process of forming one of the two components, the component is connected to the other component, and there is no need to connect the two components through a reprocessing method (such as bonding, welding, snap connection, screw connection). The relative setting of component A and component B can be that when 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, projection C and projection D can at least mostly overlap. In some embodiments, mostly overlapping can be any of the following situations: Projection C is completely located within projection D. Or, projection D is completely located within projection C. Or, projection C and projection D intersect, and the intersection area of projection C and projection D accounts for a proportion higher than 50% of projection C or projection D.

[0068] The directional terms mentioned in the embodiments of the present application, such as "inner", "outer", etc., are only references to the directions in the attached drawings. Therefore, the directional terms used are for better and clearer description and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to 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.

[0069] The terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same category, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / ", generally indicates an "or" relationship between the associated objects before and after. "Multiple" means at least two.

[0070] To facilitate the understanding of the optical lens provided by the embodiments of the present application, the relevant terms involved in the present application are explained as follows:

[0071] The optical axis is an axis passing through the centers of each lens.

[0072] The near-optical-axis region can be understood as the region on the lens surface close to the optical axis.

[0073] Taking the lens as the boundary, the side where the object to be photographed is located is the object side, and the surface of the lens close to the object side is called the object side surface.

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

[0075] The focal length, also known as the focal length, is a measure of the convergence or divergence of light in an optical system. It refers to the perpendicular distance from the optical center of the lens or lens group to the focal plane when an infinitely distant scene forms a clear image on the focal plane through the lens or lens group. From a practical perspective, it can be understood as the distance from the center of the lens to the imaging plane. For a fixed-focus lens, the position of its optical center is fixed.

[0076] The focal power is defined as the difference between the convergence of the light beam on the image side and the convergence of the light beam on the object side, and is the reciprocal of the focal length of the lens. It characterizes the ability of the optical system to deflect light rays.

[0077] Positive optical power, also known as positive refractive power, indicates that the lens has a positive focal length and can converge light rays.

[0078] Negative optical power, also known as negative refractive power, indicates that the lens has a negative focal length and can diverge light rays.

[0079] An aperture is a device used to control the amount of light passing through the lens, and it is usually inside the lens.

[0080] The aperture F-number (Fno) is the relative value obtained by dividing the focal length of the lens by the clear aperture diameter of the lens (the reciprocal of the relative aperture). The smaller the aperture F-number, the more light enters in the same unit of time. The larger the aperture F-number, the smaller the depth of field, and the background content of the photo will be blurred, similar to the effect of a telephoto lens.

[0081] The field of view (FOV) in an optical instrument is the angle formed by the two edges of the maximum range through which the image of the measured target can pass through the lens, with the vertex of the lens of the optical instrument as the vertex. The size of the field of view determines the viewing range of the optical instrument. The larger the field of view, the larger the viewing area, and the smaller the optical magnification.

[0082] The half field of view (HFOV) in an optical instrument is the angle formed by one edge of the maximum range through which the image of the measured target can pass through the lens and the optical axis, with the vertex of the lens of the optical instrument as the vertex. The size of the half field of view represents half of the size of the field of view.

[0083] The effective focal length (EFL) of an optical lens is defined as the distance from the center of the imaging module to the focal point.

[0084] The wide end of the lens is the shortest focal length segment 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.

[0085] The focal length at the wide end of the imaging module (EFLW) is defined as the distance from the center of the wide end of the imaging module to the focal point.

[0086] The telescopic end of the lens is the longest focal length segment of the lens, that is, the long focal length end. The lens has the smallest viewing angle and is used to shoot distant scenes, especially partial close-ups.

[0087] The focal length at the telescopic end of the imaging module (EFLT) is defined as the distance from the center of the telescopic end of the imaging module to the focal point.

[0088] Optical total track length (TTL) is defined as the distance from the object side to the image side, from the object surface of the first lens closest to the subject in the camera module to the imaging surface, and is the main factor in determining the height of the camera.

[0089] TTL1 represents the distance from the vertex where the object surface of the first reflecting element intersects the reflecting surface to the imaging surface.

[0090] The 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.

[0091] The refractive index of the material (Nd) is defined as the absolute value of the ratio of the propagation speed of light in the material (including visible light) to the speed of light in a vacuum when an electromagnetic wave propagates in the material, and is an index describing the propagation speed and bending degree of light in the material.

[0092] The Abbe number (Vd), that is, the dispersion coefficient, is the ratio of the difference in refractive indices of the optical material at different wavelengths, representing the degree of material dispersion.

[0093] Distortion, also known as aberration, is the degree of distortion of the image formed by the optical system of an object relative to the object itself. Distortion is due to the influence of the spherical aberration of the aperture stop. The height of the chief ray of different fields of view at the intersection with the Gaussian image plane after passing through the optical system is not equal to the ideal image height, and the difference between the two is the distortion. Therefore, distortion only changes the imaging position of off-axis object points on the ideal plane, causing the shape of the image to be distorted, but does not affect the clarity of the image.

[0094] Figure 1 It is a schematic structural diagram of the electronic device 100 provided in an embodiment of the present application in one implementation manner.

[0095] As Figure 1 shown, in some embodiments, the 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, a vehicle-mounted device, a wearable device, augmented reality (AR) glasses, an AR helmet, virtual reality (VR) glasses or a VR helmet, or other devices with a photographing and video recording function. Figure 1 The electronic device 100 in the illustrated embodiment is described by taking a mobile phone as an example.

[0096] Figure 2 is Figure 1Partial cross-sectional schematic diagram of an embodiment of the electronic device 100 at the A-A line.

[0097] As Figure 2 shown, and in combination with Figure 1 shown, the electronic device 100 includes a screen 10, a housing 20, a main 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 Figure 1 and Figure 2 only some components included in the electronic device 100 are schematically shown, and the actual shape, actual size, actual position, and actual structure of these components are not limited by Figure 1 and Figure 2 defined. Additionally, when the electronic device 100 is a device of other forms, the electronic device 100 may not include the screen 10 and the main circuit board 30.

[0098] In some embodiments, the screen 10 is installed 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 place components of the electronic device 100, such as a battery, a receiver, or a microphone, etc. Among them, the screen 10 can be a flat screen or a curved screen.

[0099] Exemplarily, 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 Figure 1 schematically shown circular shape, and can also be an oval or an irregular shape. The light-transmitting portion 21 connects the interior of the electronic device 100 to the outside of the electronic device 100. Light 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 collect the light entering the interior of the electronic device 100.

[0100] It can be understood that, hereinafter for the convenience of description, it is defined that the camera module 40 has a first direction Z, a second direction X, and a third direction Y. The first direction Z can be the thickness direction of the camera module 40, the second direction X can be the length direction of the camera module 40, the second direction X is perpendicular to the first direction Y, the third direction Y can be the height 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 setting of the camera module 40 can be flexibly set according to specific actual needs.

[0101] The structures of the relevant components of the camera module 40 are specifically introduced above. The structure of the camera module 40 and the setting of relevant optical parameters will be specifically introduced below with reference to the drawings.

[0102] As Figure 2As shown, the camera module 40 includes a first lens group G1, a first reflecting element 458a, a second lens group G2, a third lens group G3, a filter 44, and an image sensor 43 arranged in sequence from the object side to the image side. The first lens group G1 is a fixed lens group. The first reflecting element 458a is used to change the optical axis in a first direction to a second direction, and the first direction intersects the second direction. Among them, the image sensor 43 can also be referred to as an image sensor. The camera module 40 forms an image on the image sensor 43. In other words, the camera module 40 forms an imaging plane on the image sensor 43. Exemplarily, the filter 44 can be used to filter infrared light, blue light, etc. in the light before entering the image sensor 43, so as to ensure better imaging quality of the image sensor 43.

[0103] It can be understood that the camera module 40 may also 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 Figure 2 Only the camera module 40 is schematically outlined and shown with a dashed box.

[0104] As Figure 2 shown, the camera module 40 further includes a first driving mechanism 41 and a second driving mechanism 42. Exemplarily, the first driving mechanism 41 can be connected to the second lens group G2, and the first driving mechanism 41 can be used to drive the second lens group G2 to move along the optical axis in the second direction. The second driving mechanism 42 can be connected to the third lens group G3, and the second driving mechanism 42 can be used to drive the third lens group G3 to move along the optical axis in the second direction.

[0105] 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 realizing a more macro wide-angle end shooting and a farther distance telephoto end shooting.

[0106] It can be understood that since 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 rate of the camera module 40, and further facilitating the realization of the thin-type setting 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 smaller, which is conducive to realizing the thin-type setting of the electronic device 100.

[0107] It can be understood that the first reflecting element 458a changes the optical axis in the first direction to the second direction, so that the thickness of the camera module 40 in the first direction can be thinned. 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, which is beneficial to realizing the thin design of the electronic device 100.

[0108] When the camera module 40 is applied to an electronic device 100 such as a mobile phone, the electronic device 100 also has a wide continuous zoom range and can be used for shooting and recording images. The camera module 40 includes various complex shooting application scenarios, such as indoor and outdoor; it also includes diverse shooting objects, such as people and environments. The applicable scenario range and target audience of the camera module 40 are wider, which can meet different shooting needs and improve the user experience.

[0109] Exemplarily, the first driving mechanism 41 may include a magnet and a coil (not shown in the drawings). The coil cooperates with the magnet under the condition of being energized to drive the second lens group G2 to move along the optical axis in the second direction. In other embodiments, the first driving mechanism 41 may also be an SMA motor. Specifically, the present application does not make a limitation.

[0110] Exemplarily, the second driving mechanism 42 may include a magnet and a coil (not shown in the drawings). The coil cooperates with the magnet under the condition of being energized to drive the third lens group G3 to move along the optical axis in the second direction. In other embodiments, the second driving mechanism 42 may also be an SMA motor. Specifically, the present application does not make a limitation.

[0111] It can be understood that the structure of the first driving mechanism 41 and the structure of the second driving mechanism 42 may be the same or different. In other embodiments, the first driving mechanism 41 and the second driving mechanism 42 may also be integrated into an integrated driving device.

[0112] Figure 3 is Figure 2 A partial structure simplified schematic diagram of the shown camera module 40 in an embodiment.

[0113] As Figure 3 As shown, during the process of the camera module 40 switching to the wide-angle end, the first driving mechanism 41 can be used to drive the second lens group G2 to move away from the first reflecting element 458a, and the second driving mechanism 42 drives the third lens group G3 to move away from the first reflecting element 458a. At this time, when the camera module 40 is at the wide-angle end, the camera module 40 can focus on a close-range or even macro shooting object (including the user of the camera module 40).

[0114] Figure 4 is Figure 3Simplified schematic diagram of a partial structure of the imaging module 40 shown in one embodiment.

[0115] As Figure 4 shown, during the process of the imaging module 40 switching to the telephoto end, the first driving mechanism 41 can be used to drive the second lens group G2 to move in a direction closer to the first reflecting element 458a, and the second driving mechanism 42 drives the third lens group G3 to move in a direction closer to the first reflecting element 458a. At this time, when the imaging module 40 is at the telephoto end, the imaging module 40 can focus on a distant shooting object (including the user of the imaging module 40).

[0116] In one embodiment, the focal length f1 of the first lens group G1 satisfies: f1 < 0, that is, the first lens group G1 can have a negative optical power. The focal length f2 of the second lens group G2 satisfies: f2 > 0, that is, the second lens group G2 can have a positive optical power. The focal length f3 of the third lens group G3 satisfies: f3 < 0, that is, the third lens group G3 can have a negative optical power.

[0117] Exemplarily, 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 can satisfy: f1 / f2 < -3, -1 < f2 / f3 < -0.5. For example, f1 / f2 can be equal to -3.01, -3.5, -4.0, -5.55, -8.23, -10 or -11.11, etc., and f2 / f3 can be equal to -0.99, -0.8, -0.75, -0.6 or -0.51, etc.

[0118] 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 optical power distribution, 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.

[0119] 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. Therefore, 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, that is, the value of TTL1 / EFLT, is small, so that the length of the imaging module 40 in the second direction can be reduced, which is beneficial to realizing the miniaturized setting of the imaging module 40.

[0120] 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. Therefore, the aperture number Fno at the wide-angle end of the imaging module 40 is small and has a relatively wide value range, that is, the aperture number at the wide-angle end of the imaging module 40 is large, which can increase the amount of light entering the imaging module 40, thereby improving the imaging quality of the imaging module 40.

[0121] 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. Therefore, both 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 small, and the stroke △L2 of the second lens group G2 moving along the optical axis in the second direction is small relative to the total system length TTL1 of the imaging module 40, which can reduce the length of the imaging module 40 in the second direction, that is, reduce the total optical length TTL1 of the imaging module 40, thereby facilitating the reduction of the volume of the imaging module 40, and further facilitating the realization of the miniaturized setting of the imaging module 40.

[0122] Exemplarily, the focal length f1 of the first lens group G1 can satisfy: -40 < f1 < -30. For example, f1 can be equal to -30.1, -33, -35.12, -38, or -39.99, etc. Exemplarily, the focal length f2 of the second lens group G2 can satisfy: 7 < f2 < 12. For example, f2 can 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 can satisfy: -18 < f3 < -12. For example, f3 can be equal to -12.12, -13, -14.3, -16.66, -17.2, or -17.99, etc.

[0123] 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 optical power distribution, 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.

[0124] It can be understood that, due to the 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, 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 ΔL2 of the second lens group G2 moving along the optical axis in the second direction and the focusing stroke ΔL3 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 ΔL2 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. In this way, it is beneficial to improve the imaging quality of the imaging module 40 and achieve miniaturization of the imaging module 40.

[0125] As Figure 3 and Figure 4 shown, 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 can be used to converge the light in the external environment. The second lens 452 may have a negative optical power and can be used to diverge the light converged by the first lens 451.

[0126] In one embodiment, the object side surface of the first lens 451 of the imaging module 40 is convex. It can be understood that the first lens 451 can be used to converge the light in the external environment, so that the diameter of the light beam entering the imaging module 40 is small, and the apertures of the second lens group G2 and the third lens group G3 are no longer the maximum limitation of the light passing aperture, thereby effectively increasing the light passing aperture of the imaging module 40.

[0127] It can be understood that the second lens 452 is used in cooperation with the first lens 451 to form a positive-negative lens cooperation structure, which can better solve aberration problems such as chromatic aberration. The imaging module 40 has a higher degree of freedom and better imaging quality.

[0128] 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.

[0129] In one embodiment, the material of the first lens 451 of the imaging module 40 satisfies: 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, etc.; the Abbe number of the first lens 451 may be 50.5, 51, 52, or 53.66, etc.

[0130] It can be understood that the first lens 451 of the imaging module 40 has a relatively low refractive index and a relatively high Abbe number, and the light transmittance of the lens of the first lens 451 is relatively high. In this way, the light penetration of the lens of the first lens 451 is relatively strong, and the optical quality of the first lens 451 is relatively high, making the image captured by the imaging module 40 clearer.

[0131] Such as Figure 3 and Figure 4 As shown, the second lens group G2 may include a third lens 453, a fourth lens 454, and a fifth lens 455 arranged in sequence from the object side to the image side, and at least one of the third lens 453, the fourth lens 454, and the fifth lens 455 has a negative optical power. Exemplarily, 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.

[0132] It can be understood that the sixth lens 456 and the seventh lens 457 make the third lens group G3 have a negative optical power, making the optical power distribution between the third lens group G3, the first lens group G1, and the second lens group G2 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 among aberration, volume, cost, thermal reliability, etc., and realize a wide range of continuous zoom ratios.

[0133] It can be understood that the sixth lens 456 and the seventh lens 457 make 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 more reasonable. Therefore, it is beneficial to reduce 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, thereby being beneficial to reducing the length of the imaging module 40 in the second direction, and further being beneficial to realizing the miniaturized setting of the imaging module 40.

[0134] It can be understood that the sixth lens 456 and the seventh lens 457 make 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 more reasonable. Therefore, the aperture number Fno at the wide-angle end of the imaging module 40 is relatively small and has a relatively wide value range, that is, it is beneficial for the aperture number at the wide-angle end of the imaging module 40 to be relatively large, thereby being beneficial to increasing the light input of the imaging module 40, and further being beneficial to improving the imaging quality of the imaging module 40.

[0135] It can be understood that the sixth lens 456 and the seventh lens 457 make 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 more reasonable. Therefore, both the 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 small, and the stroke △L2 of the second lens group G2 moving along the optical axis in the second direction is small relative to the total system length TTL1 of the imaging module 40, which is beneficial to reducing the length of the imaging module 40 in the second direction and further beneficial to the miniaturization of the imaging module 40.

[0136] 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.

[0137] 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.

[0138] As Figure 3 and Figure 4 shown, the third lens group G3 may include a sixth lens 456 and a seventh lens 457 arranged in sequence from the object side to the image side, and at least one of the sixth lens 456 and the seventh lens 457 has a negative optical power. Exemplarily, the focal length f36 of the sixth lens satisfies: f36 < 0, and the focal length f37 of the seventh lens satisfies: f37 > 0.

[0139] It can be understood that the sixth lens 456 and the seventh lens 457 make the third lens group G3 have a negative optical power, making the distribution of the optical power among the third lens group G3, the first lens group G1, and the second lens group G2 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 among aberration, volume, cost, thermal reliability, etc., and realize a wide range of continuous zoom ratios of the imaging module 40.

[0140] It can be understood that the sixth lens 456 and the seventh lens 457 make 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 more reasonable. Therefore, it is beneficial to reduce 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, which is beneficial to reducing the length of the imaging module 40 in the second direction and further beneficial to realizing the miniaturization of the imaging module 40.

[0141] It can be understood that the sixth lens 456 and the seventh lens 457 make 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 more reasonable. Therefore, the aperture number Fno at the wide-angle end of the imaging module 40 is smaller and has a wider value range, that is, it is beneficial for the aperture number at the wide-angle end of the imaging module 40 to be larger, thereby being beneficial to increasing the amount of light entering the imaging module 40, and further being beneficial to improving the imaging quality of the imaging module 40.

[0142] It can be understood that the sixth lens 456 and the seventh lens 457 make 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 more reasonable. Therefore, both the travel ΔL2 of the second lens group G2 moving along the optical axis in the second direction and the focusing travel ΔL3 of the third lens group G3 moving along the optical axis in the second direction are smaller, and the travel ΔL2 of the second lens group G2 moving along the optical axis in the second direction is smaller relative to the total system length TTL1 of the imaging module 40, thereby being beneficial to reducing the length of the imaging module 40 in the second direction, and further being beneficial to the miniaturization setting of the imaging module 40.

[0143] 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.

[0144] 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.

[0145] Exemplarily, each lens of the imaging module 40 includes two opposite surfaces, and at least one surface is a lens surface. Among them, the lens surface is a curved surface that protrudes or concaves along the extending direction of the optical axis of the imaging module 40, and the lens surface can participate in imaging and correcting aberration. Specifically, the light entering the imaging 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 imaging module 40, causing the light to have corresponding converging or diverging phenomena, thereby participating in imaging.

[0146] As Figure 2 shown, the imaging module 40 may further include a diaphragm 459. Exemplarily, the diaphragm 459 may be located between every two lenses.

[0147] Exemplarily, the diaphragm 459 may be an aperture stop, and the aperture stop is used to limit the amount of light entering the imaging module 40 and reduce the stray light in the imaging module 40 to change the brightness of the image. In other embodiments, the position of the diaphragm 459 is not limited to Figure 2The illustrated diaphragm 459 is located between the second lens 452 and the third lens 453, and the position of the diaphragm 459 can be flexibly adjusted according to actual needs.

[0148] It can be understood that when the diaphragm 459 is located between the second lens 452 and the third lens 453, the diaphragm 459 can achieve the effect of a large aperture at both the wide-angle end and the telephoto end of the imaging module 40. In addition, the imaging module 40 of the present embodiment has a relatively large number of lenses for correcting aberration, which is beneficial to obtaining better imaging quality. Furthermore, when the diaphragm 459 is located between the second lens 452 and the third lens 453, it is convenient to correct the aberration of the diaphragm 459.

[0149] In other embodiments, the imaging module 40 may not include the diaphragm 459. It can be understood that Figure 2 only some components of the imaging module 40 are schematically shown, and the actual shapes, actual sizes, and actual structures of these components are not Figure 2 limited.

[0150] Figure 5 is Figure 2 a partially simplified schematic diagram of another embodiment of the imaging module 40 at the wide-angle end as shown. Figure 6 is Figure 2 a partially simplified schematic diagram of another embodiment of the imaging module 40 at the telephoto end as shown.

[0151] As Figure 5 and Figure 6 shown, the imaging module 40 may further include a fourth lens group G4. Exemplarily, 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 G4 may include a seventh lens 457.

[0152] As Figure 5 and Figure 6 shown, the fourth lens group G4 may 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 the image quality and improve the imaging quality of the imaging module 40.

[0153] Exemplarily, the fourth lens group G4 is a fixed lens group, and the fourth lens group G4 has a positive optical power. It can be understood that the fourth lens group G4 can converge the light rays diverged by the third lens group G3, so that the light rays can form an image on the imaging plane, improving the imaging quality of the imaging module 40.

[0154] It can be understood that the focal length of the wide-angle end of the imaging module 40 is EFLW. The focal length of the telephoto end of the imaging module 40 is EFLT.

[0155] It can be 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: f1 / f2 < -3, -1 < f2 / f3 < -0.5, the imaging 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 can be understood that the image height IH of the imaging module 40 is relatively large, and the target surface of the imaging module 40 is also relatively large. In this way, a chip with a larger volume and more comprehensive functions can be set on the target surface of the imaging module 40, improving the shooting performance of the imaging module 40. Of course, IH / EFLT can also be selected as other values according to actual needs.

[0156] It can be 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: f1 / f2 < -3, -1 < f2 / f3 < -0.5, the focal length EFLW at the wide-angle end of the imaging module 40 and the focal length EFLT at the telephoto end of the imaging module 40 can satisfy: 1.2 ≤ EFLT / EFLW ≤ 3. For example, EFLT / EFLW can be equal to 1.2, 1.36, 1.5, 1.88, 2.38, or 3, etc.

[0157] It can be understood that due to the reasonable distribution of the focal lengths among the first lens group G1 to the third lens group G3 of the imaging module 40, the ratio of the focal length EFLW at the wide-angle end of the imaging module 40 to the focal length EFLT at the telephoto end of the imaging module 40, that is, the value range of EFLT / EFLW is relatively wide, and the ranges of the zoom ratio and the zoom magnification of the imaging module 40 are both relatively large, which can improve the imaging quality of the imaging module 40. Of course, EFLT / EFLW can also be selected as other values according to actual needs.

[0158] Exemplarily, the first reflection element 458a may be located between the first lens group G1 and the second lens group G2. In other words, the first reflection element 458a may be located between the second lens 452 and the third lens 453. It can be understood that when the light in the external environment diverged by the first lens group G1 passes through the first reflection element 458a, the light will be refracted inside the first reflection element 458a, and the light direction changes from the first direction to the second direction. Since the propagation direction of the light in the external environment is different from the propagation direction of the light in the second lens group G2 and the third lens group G3, the placement position, angle, etc. of the imaging module 40 in the imaging module 40 or the electronic device 100 are more flexible, and the application range of the imaging module 40 is wider. Since the light propagates in the second direction inside the imaging module 40, the length of the imaging module 40 in the first direction can be reduced, so that the imaging module 40 can be applied to thin electronic devices such as mobile phones and tablets. In addition, since the light undergoes a contraction with a longer optical path inside the first reflection element 458a, the diameter of the light beam decreases. Therefore, the first reflection element 458a no longer makes the aperture of the second lens group G2 the maximum limit of the light passing aperture, thereby effectively increasing the light passing aperture of the imaging module 40.

[0159] It can be 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: f1 / f2 < -3, -1 < f2 / f3 < -0.5, the imaging module 40 can satisfy: 0.6 ≤ TTL1 / EFLT ≤ 1.8; where TTL1 is the distance from the vertex where the object side surface of the first reflection element 458a intersects the reflection surface to the imaging surface. For example, TTL1 / EFLT may be equal to 0.6, 0.8, 0.95, 1.2, 1.66, or 1.8, etc. It can be understood that since the distribution of the focal lengths between the first lens group G1 to the third lens group G3 of the imaging module 40 is relatively reasonable, the ratio of the total system length TTL1 of the imaging module 40 to the focal length EFLT of the telephoto end of the imaging module 40, that is, the value range of TTL1 / EFLW is relatively small. In this way, the total system length TTL1 of the imaging module 40 is smaller, which is beneficial to reducing the length of the imaging module 40 in the second direction and is beneficial to realizing the miniaturized setting of the imaging module 40.

[0160] It can be 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: f1 / f2 < -3, -1 < f2 / f3 < -0.5, the aperture number Fno at the wide-angle end of the imaging 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 can be understood that the aperture number Fno at the wide-angle end of the imaging module 40 is smaller, that is, the aperture at the wide-angle end of the imaging module 40 is larger. In this way, the characteristic of a large aperture of the imaging module 40 can be realized, so that the amount of light entering the imaging module 40 increases. In addition, the high resolution and zoom continuity of the imaging module 40 can also be ensured. Of course, Fno can also be selected as other values according to actual needs.

[0161] It can be understood that the first lens group G1 can remain fixed during the focusing process of the imaging module 40. The focusing travel 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 imaging module 40. The focusing travel 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 imaging module 40. The focusing travel of the third lens group G3 along the optical axis is △L3, and △L3 can satisfy: △L3 > 0.

[0162] 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: f1 / f2 < -3, -1 < f2 / f3 < -0.5, the focusing stroke △L2 of the second lens group G2 moving along the optical axis, the focusing stroke △L3 of the third lens group G3 moving along the optical axis, and the total system length TTL1 of the imaging module 40 can satisfy: 1 ≤ △L2 / △L3 ≤ 2, and 0.1 ≤ △L2 / TTL1 ≤ 0.3. For example, △L2 / △L3 can be equal to 1, 1.2, 1.33, 1.68, 1.8, or 2, etc.; △L2 / TTL1 can be equal to 0.1, 0.15, 0.2, 0.23, 0.28, or 0.3, etc. It can be understood that since the distribution of the focal lengths of the first lens group G1 to the third lens group G3 of the imaging module 40 is relatively reasonable, 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 collision of the second lens group G2 and the third lens group G3 during the focusing process. And the focusing stroke △L2 of the second lens group G2 moving along the optical axis is relatively small compared to the total system length TTL1 of the imaging module 40, and the focusing stroke △L3 of the third lens group G3 moving along the optical axis is also relatively small compared to the total system length TTL1 of the imaging module 40. In this way, the total system length TTL1 of the imaging module 40 can be relatively small, thereby reducing the length of the imaging module 40 in the second direction, which is beneficial to reducing the volume of the imaging module 40 and helps to realize the miniaturized setting of the imaging module 40. In addition, during the focusing process of the imaging module 40, the second lens group G2 and the third lens group G3 only need a relatively small focusing stroke to complete the focusing process, the focusing speed of the imaging module 40 is faster, the imaging quality of the imaging module 40 is higher, the applicable scene range is larger, the target user group is wider, and the user experience is better. Of course, △L2 / △L3 and △L2 / TTL1 can also select other values according to actual needs. It can be understood that in other embodiments, the imaging module 40 may not satisfy the above relationship.

[0163] It can be understood that the zoom ratio of the imaging module 40 is in the range of three times to five times. Exemplarily, the imaging module 40 can both achieve shooting at the wide-angle end and shooting at the telephoto end, and can shoot diverse objects in various complex shooting application scenarios, expanding the applicable range of the imaging module 40.

[0164] It can be understood that the equivalent focal length of the imaging module 40 is in the range of 70 millimeters to 120 millimeters. Exemplarily, within a relatively wide range of equivalent focal lengths, the imaging module 40 can achieve optical zoom, and the imaging quality of the imaging 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 in conjunction with the relevant drawings.

[0166] The first embodiment: Please refer to Figure 3 and Figure 4 In this embodiment, the lens of the camera module 40 has seven pieces. The camera module 40 includes a first lens 451, a second lens 452, a first reflection 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 an image sensor chip 43 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 powers. The second lens 452, the fifth lens 455, and the seventh lens 457 all have negative optical powers. It can be understood that the first lens 451 and the second lens 452 can form a first lens group G1. The third lens 453, the fourth lens 454, and the fifth lens 455 can form a second lens group G2. The sixth lens 456 and the seventh lens 457 can form a third lens group G3. It can be understood that the first lens 451 satisfies: Nd = 1.64, Vd = 23.5. It can be understood that the light penetration of the lens of the first lens 451 is relatively strong, and the optical quality of the first lens 451 is relatively 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 the image side surface of the first lens 451; S3 and S4 can respectively represent the object side surface and the image side surface of the second lens 452; S5 and S6 can represent the object side surface and the image side surface of the first reflection element 458a; S7 and S8 can respectively represent the object side surface and the image side surface of the third lens 453; S9 and S10 can respectively represent the object side surface and the image side surface of the fourth lens 454; S11 and S12 can respectively represent the object side surface and the image side surface of the fifth lens 455; S13 and S14 can respectively represent the object side surface and the image side surface of the sixth lens 456, S15 and S16 can respectively represent the object side surface and the image side surface of the seventh lens 457, and S17 and S18 can respectively represent the object side surface and the image side surface of the filter 44. It should be noted that in the present application, the meanings represented by 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 elaborated again when they appear later.

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

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

[0170]

[0171]

[0172] Among them, R is the radius of curvature of the first lens 451 to the seventh lens 457, the first reflecting element 458a, and the filter 44 of the imaging module 40. Nd is the material refractive index of the first lens 451 to the seventh lens 457, the first reflecting element 458a, and the filter 44 of the imaging module 40. Vd is the Abbe number of the first lens 451 to the seventh lens 457, the first reflecting element 458a, and the filter 44 of the imaging module 40. It should be noted that in this application, when R, Nd, and Vd appear again in the subsequent table, the symbols with the same meaning will not be elaborated again.

[0173] In addition, Th is the thickness of the first lens 451 to the seventh lens 457 and the filter 44 of the imaging module 40. The thickness of S1 refers to the distance between the object side surface 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 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 reflecting element 458a. The thickness of S5 refers to the distance between the first reflecting element 458a and the third lens 453. The thickness of S7 refers to the distance between the object side surface 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 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 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 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 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 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 they appear again in the subsequent table, the symbols with the same meaning will not be elaborated again.

[0174] In addition, the aspheric coefficients of the respective lenses of the imaging module 40 in the first embodiment of the present application are as shown in Table 2 below.

[0175] Table 2 Aspheric coefficients of the respective lenses of the imaging module 40 in the first embodiment

[0176]

[0177]

[0178] Among them, A2, A4, A6, A8, A 10 , A 12 , A 14 , A 16 , A 18 , A 20 and A 22 represent aspheric coefficients. The 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 represented in scientific notation. For example, 4.70E-04 means 4.70×10 -4 ; -3.51E-11 means -3.51×10 -11 .

[0179] It can be understood that among the 14 aspheric surfaces of the imaging module 40 shown in Table 1 and Table 2, the aspheric surface shapes z of all even and odd aspheric surfaces can be defined by, but not limited to, the following aspheric formula:

[0180]

[0181] Among them, z is the sag of the aspheric surface, r is the radial coordinate of the aspheric surface, c is the vertex spherical curvature of the aspheric surface, K is the conic constant, and A i represents the i-th order aspheric coefficient. Substituting the design parameters of the first lens 451 to the seventh lens 457 of the imaging module 40 into the above aspheric formula, the surface shapes of the object side and the image side of the first lens 451 to the seventh lens 457 of the imaging module 40 in the first embodiment of the present application can be obtained.

[0182] Based on the data in Table 1 and Table 2, some parameters of the imaging module 40 in the first embodiment of the present application are as shown in Table 3 below.

[0183] Table 3 Some parameters of the imaging module 40 in the first embodiment

[0184] EFLT Fno TTL1 Sa IH 20.00 3.00 31.40 2.05 3.60

[0185] Among them, EFLT represents the focal length of the telephoto end of the imaging module 40, that is, the focal length EFLT of the telephoto end of the imaging module 40 satisfies: EFLT = 20.00 mm. Fno represents the aperture number of the wide-angle end of the imaging module 40, that is, the aperture number Fno of the wide-angle end of the imaging module 40 satisfies: Fno = 3.00. TTL1 is the total system length, that is, the total system length TTL1 of the imaging module 40 satisfies: TTL1 = 31.40 mm. Sa is the width of the object side or image side of the first reflecting element 458a, that is, the size Sa of the first reflecting element 458a of the imaging module 40, satisfies: Sa = 2.05 mm. IH is the image height of the imaging surface, that is, the image height IH of the imaging module 40 satisfies: IH = 3.60 mm.

[0186] It can be understood that the focal length f1 of the first lens group G1 of the imaging module 40 satisfies: f1 = -36. The focal length f2 of the second lens group G2 of the imaging module 40 satisfies: f1 = 9.7. The focal length f3 of the third lens group G3 of the imaging module 40 satisfies: f3 = -16.74.

[0187] Then, the focal length f1 of the first lens group G1 of the imaging module 40 and the focal length f2 of the second lens group G2 of the imaging module 40 satisfy: f1 / f2 = -3.71. The focal length f2 of the second lens group G2 of the imaging module 40 and the focal length f3 of the third lens group G3 of the imaging module 40 satisfy: f2 / f3 = -0.58. 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, and the imaging module 40 can achieve a wide range of continuous zoom ratios.

[0188] It can be understood that the ratio of the image height IH of the imaging module 40 to the focal length of the wide-angle end, that is, IH / EFLT = 0.18. It can be understood that the target surface of the imaging module 40 is relatively large, and a chip with a larger volume and more comprehensive functions can be set on the target surface of the imaging module 40 to improve the shooting performance of the imaging module 40.

[0189] It can be understood that the focal length EFLT of the telephoto end of the imaging module 40 and the focal length EFLW of the wide-angle end of the imaging module 40 satisfy: EFLT / EFLW = 1.67. It can be understood that the value range of EFLT / EFLW of the imaging module 40 is relatively wide, and both the zoom ratio and the zoom magnification range of the imaging module 40 are relatively large, which can improve the imaging quality of the imaging module 40.

[0190] It can be understood that the total system length TTL1 of the imaging module 40 and the focal length EFLT of the telephoto end of the imaging module 40 satisfy: TTL1 / EFLT = 1.57. It can be understood that the value range of TTL1 / EFLW of the imaging module 40 is relatively small. In this way, the total optical system length TTL1 of the imaging module 40 is relatively small, which is beneficial to realizing the miniaturized setting of the imaging module 40.

[0191] It can be understood that the aperture number Fno of the wide-angle end of the imaging module 40 is relatively small. That is to say, the aperture of the wide-angle end of the imaging module 40 is relatively large. In this way, the characteristic of the large aperture of the imaging module 40 can be realized, and the high resolution and zoom continuity of the imaging module 40 can be ensured.

[0192] It can be understood that the focusing stroke △L2 of the second lens group G2 of the imaging module 40 and the focusing stroke △L3 of the third lens group G3 of the imaging module 40 satisfy: △L2 / △L3 = 1.28. It can be understood that the total optical system length TTL1 of the imaging module 40 can be relatively small, which helps to realize the miniaturized setting of the imaging module 40. In addition, the focusing speed of the imaging module 40 is faster, the imaging quality of the imaging module 40 is higher, the applicable scene range is larger, the target user group is wider, and the user experience is better.

[0193] In addition, the size Sa of the first reflection element 458a is relatively small, which can reduce the length of the imaging module 40 in the first direction, thereby reducing the volume of the imaging module 40. When the imaging module 40 is applied to the imaging module 40 or the electronic device 100, it is further beneficial to realize the ultra-thin setting of the imaging module 40 or the electronic device 100.

[0194] Figure 7 It is a schematic diagram of the imaging optical distortion of the imaging module 40 of the first embodiment. Among them, in the Figure 7 coordinate system, the abscissa is the optical distortion percentage, and the ordinate is the field of view angle (FOV, °). It should be noted that in this application, when the same abscissa and ordinate appear again in the subsequent coordinate system, their meanings will not be described again.

[0195] As Figure 7 shown, the optical distortion ratios of the imaging module 40 of the first embodiment of this application at different field of view angles are all less than 1%, the optical distortion degree of the image is relatively small, and the imaging quality of the imaging module 40 is relatively high.

[0196] Second embodiment: Please refer to Figure 8 and Figure 9 , Figure 8 is Figure 2 a simplified partial structure schematic diagram of another embodiment of the wide-angle end of the imaging module 40 shown inFigure 1 。 Figure 9 is Figure 2 A partial structural simplified schematic of the telephoto end of the camera module 40 shown Figure 1 。In this embodiment, the lens of the camera module 40 has seven pieces. The camera module 40 includes a first lens 451, a second lens 452, a first reflecting 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 an image sensor chip 43 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 powers. The second lens 452, the fourth lens 454, and the seventh lens 457 all have negative optical powers.

[0197] In this embodiment, the first lens 451 and the second lens 452 can form a first lens group G1. The third lens 453, the fourth lens 454, and the fifth lens 455 can form a second lens group G2. The sixth lens 456 and the seventh lens 457 can form a third lens group G3.

[0198] In this embodiment, the first lens 451 satisfies: Nd = 1.64, Vd = 23.5. It can be understood that the light penetration of the lens of the first lens 451 is relatively strong, and the optical quality of the first lens 451 is relatively high, making the image captured by the camera module 40 clearer.

[0199] Some design parameters of the camera module 40 in the second embodiment of this application are shown in Table 4 below.

[0200] Table 4 Some design parameters of each lens of the camera module 40 in the second embodiment

[0201]

[0202] In addition, the aspheric coefficients of each lens of the camera module 40 in the second embodiment of this application are shown in Table 5 below.

[0203] Table 5 Aspheric coefficients of each lens of the camera module 40 in the second embodiment

[0204]

[0205]

[0206] Among them, A2, A4, A6, A8, A 10 , A 12 , A 14 , A 16 , A 18 , A 20 , A22 and A 24 represents the aspherical coefficient. The polynomial coefficients that do not exist in the table (such as A1, A3, etc.) are all 0. Norm R represents the normalized radii of the object side and the image side of the first lens 451 to the seventh lens 457.

[0207] It can be understood that among the 14 aspherical surfaces of the imaging module 40 shown in Table 4 and Table 5, all even and odd aspherical surface profiles z can be limited by but not limited to the following aspherical formula:

[0208]

[0209] 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 profiles of the object side and the image side of the first lens 451 to the seventh lens 457 of the imaging module 40 in the second embodiment of the present application can be obtained.

[0210] According to the data in Table 4 and Table 5, some parameters of the imaging module 40 in the second embodiment of the present application are as shown in Table 6 below.

[0211] Table 6 Some parameters of the imaging module 40 in the second embodiment

[0212] EFLT Fno TTL1 Sa IH 24.00 3.26 33.32 3.50 3.60

[0213] Among them, the focal length EFLT of the telephoto end of the imaging module 40 satisfies: EFLT = 24.00 mm. The f-number Fno of the wide-angle end of the imaging module 40 satisfies: Fno = 3.26. The total system length TTL1 of the imaging module 40 satisfies: TTL1 = 33.32 mm. The size Sa of the first reflecting element 458a of the imaging module 40 satisfies: Sa = 3.50 mm. The image height IH of the imaging module 40 satisfies: IH = 3.60 mm.

[0214] It can be understood that the focal length f1 of the first lens group G1 of the imaging module 40 satisfies: f1 = -55.05. The focal length f2 of the second lens group G2 of the imaging module 40 satisfies: f1 = 10.79. The focal length f3 of the third lens group G3 of the imaging module 40 satisfies: f3 = -14.27.

[0215] Then, the focal length f1 of the first lens group G1 of the imaging module 40 and the focal length f2 of the second lens group G2 of the imaging module 40 satisfy: f1 / f2 = -5.10. The focal length f2 of the second lens group G2 of the imaging module 40 and the focal length f3 of the third lens group G3 of the imaging module 40 satisfy: f2 / f3 = -0.76. 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, and the imaging module 40 can achieve a wide range of continuous zoom ratios.

[0216] It can be understood that the ratio of the image height IH of the imaging module 40 to the focal length at the wide-angle end, that is, IH / EFLT = 0.15. It can be understood that the target surface of the imaging module 40 is relatively large, and a chip with a larger volume and more comprehensive functions can be arranged on the target surface of the imaging module 40 to improve the shooting performance of the imaging module 40.

[0217] It can be understood that the focal length EFLT at the telephoto end of the imaging module 40 and the focal length EFLW at the wide-angle end of the imaging module 40 satisfy: EFLT / EFLW = 2.00. It can be understood that the value range of EFLT / EFLW of the imaging module 40 is relatively wide, and both the zoom ratio and the zoom magnification range of the imaging module 40 are relatively large, which can improve the imaging quality of the imaging module 40.

[0218] It can be understood that the total system length TTL1 of the imaging module 40 and the focal length EFLT at the telephoto end of the imaging module 40 satisfy: TTL1 / EFLT = 1.39. It can be understood that the value range of TTL1 / EFLW of the imaging module 40 is relatively small. In this way, the total optical system length TTL1 of the imaging module 40 is relatively small, which is beneficial to realizing the miniaturized setting of the imaging module 40.

[0219] It can be understood that the aperture number Fno at the wide-angle end of the imaging module 40 is relatively small, that is, the aperture at the wide-angle end of the imaging module 40 is relatively large. In this way, the characteristic of a large aperture of the imaging module 40 can be realized, ensuring the high resolution and zoom continuity of the imaging module 40.

[0220] It can be understood that the focusing stroke △L2 of the second lens group G2 of the imaging module 40 and the focusing stroke △L3 of the third lens group G3 of the imaging module 40 satisfy: △L2 / △L3 = 1.58. It can be understood that the total optical system length TTL1 of the imaging module 40 can be relatively small, which helps to realize the miniaturized setting of the imaging module 40. In addition, the imaging module 40 has a faster focusing speed, higher imaging quality, a wider applicable scene range, a wider target user group, and a better user experience.

[0221] In addition, the size Sa of the first reflecting element 458a is small, which can reduce the length of the imaging module 40 in the first direction, thereby reducing the volume of the imaging module 40. When the imaging module 40 is applied to the imaging module 40 or the electronic device 100, it is beneficial to realize the ultra-thin setting of the imaging module 40 or the electronic device 100.

[0222] Figure 10 It is a schematic diagram of the imaging optical distortion of the imaging module 40 of the second embodiment.

[0223] Such as Figure 10 As shown, the optical distortion ratios of the imaging module 40 of the second embodiment of the present application at different field angles are all less than 2%, the degree of optical distortion of the image is small, and the imaging quality of the imaging module 40 is high.

[0224] The third embodiment: Please refer to Figure 11 and Figure 12 , Figure 11 is Figure 2 A partial structural simplified schematic diagram of another embodiment of the wide-angle end of the imaging module 40 shown Figure 2 . Figure 12 is Figure 2 A partial structural simplified schematic diagram of another embodiment of the telephoto end of the imaging module 40 shown Figure 2 . In this embodiment, the lens of the imaging module 40 is seven pieces. The imaging module 40 includes a first lens 451, a second lens 452, a first reflecting 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 an image sensor 43 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.

[0225] It can be understood that the first lens 451 and the second lens 452 can form a first lens group G1. The third lens 453, the fourth lens 454, and the fifth lens 455 can form a second lens group G2. The sixth lens 456 and the seventh lens 457 can form a third lens group G3.

[0226] It can be understood that the first lens 451 satisfies: Nd = 1.64, Vd = 23.5. It can be understood that the light penetration of the lens 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 imaging module 40 is clearer.

[0227] Some design parameters of the imaging module 40 of the third embodiment of the present application are shown in Table 7 below.

[0228] Table 7 Partial design parameters of each lens of the camera module 40 in the third embodiment

[0229]

[0230]

[0231] In addition, the aspherical coefficients of each lens of the camera module 40 in the third embodiment of the present application are as shown in Table 8 below.

[0232] Table 8 Aspherical coefficients of each lens of the camera module 40 in the third embodiment

[0233] Type K Norm R <![CDATA[A2]]> <![CDATA[A4]]> <![CDATA[A6]]> <![CDATA[A8]]> <![CDATA[A 10 > S1 Odd aspheric surface 0 5.5 0.00E+00 -4.63E-01 -3.50E-02 2.36E+00 -6.97E+00 S2 Odd aspheric surface 0 4.8093197 0.00E+00 -4.22E-01 -1.54E-01 2.68E+00 -7.95E+00 S3 Odd aspheric surface 0 4.7829971 0.00E+00 4.77E-01 -2.48E+00 1.28E+01 -4.70E+01 S4 Odd aspheric surface 0 4.8617254 0.00E+00 6.79E-01 -2.50E+00 1.25E+01 -5.05E+01 S7 Odd aspheric surface 0 4.095432 0.00E+00 -4.06E-02 -3.23E-02 -1.39E-01 5.66E-01 S8 Odd aspheric surface 0 1 0.00E+00 4.97E-05 1.37E-06 4.09E-08 2.33E-09 S9 Odd aspheric surface 0 1 0.00E+00 -1.17E-05 2.03E-06 2.16E-07 1.56E-08 S10 Odd aspheric surface 0 3.825798 0.00E+00 4.02E-02 -2.69E-01 4.15E+00 -1.77E+01 S11 Odd aspheric surface 0 3.6040288 0.00E+00 1.90E-01 -6.65E-01 5.82E+00 -2.04E+01 S12 Odd aspheric surface 0 3.3252625 0.00E+00 2.60E-01 -3.09E-01 2.26E+00 -6.69E+00 S13 Odd aspheric surface 0 3.477755 0.00E+00 8.14E-01 -1.47E+00 6.01E+00 -1.91E+01 S14 Odd aspheric surface 0 3.3988447 0.00E+00 6.52E-01 -2.16E+00 1.39E+01 -5.07E+01 S15 Odd aspheric surface 0 3.3886983 0.00E+00 -3.49E+00 7.08E+00 4.79E+00 -7.36E+01 S16 Odd aspheric surface 0 3.7153507 0.00E+00 -5.36E+00 1.91E+01 -4.61E+01 6.78E+01 Type <![CDATA[A 12 > <![CDATA[A 14 > <![CDATA[A 16 > <![CDATA[A 18 > <![CDATA[A 20 > <![CDATA[A 22 > <![CDATA[A 24 > S1 Odd aspheric surface 1.19E+01 -9.49E+00 1.13E+00 2.84E+00 -1.16E+00 -5.00E-02 0.00E+00 S2 Odd aspheric surface 1.41E+01 -1.54E+01 1.15E+01 -5.93E+00 1.64E+00 2.35E-02 0.00E+00 S3 Odd aspheric surface 1.03E+02 -1.34E+02 1.02E+02 -4.10E+01 6.59E+00 0.00E+00 0.00E+00 S4 Odd aspheric surface 1.23E+02 -1.82E+02 1.59E+02 -7.59E+01 1.52E+01 -2.82E-03 0.00E+00 S7 Odd aspheric surface -1.43E+00 1.98E+00 -1.70E+00 8.87E-01 -2.82E-01 5.23E-02 0.00E+00 S8 Odd aspheric surface 1.65E-10 2.54E-11 -1.19E-23 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S9 Odd aspheric surface 1.00E-09 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S10 Odd aspheric surface 3.93E+01 -5.18E+01 4.09E+01 -1.79E+01 3.29E+00 3.26E-02 0.00E+00 S11 Odd aspheric surface 3.96E+01 -4.66E+01 3.32E+01 -1.33E+01 2.23E+00 5.42E-02 0.00E+00 S12 Odd aspheric surface 1.20E+01 -1.40E+01 1.09E+01 -5.22E+00 1.13E+00 3.05E-02 0.00E+00 S13 Odd aspheric surface 4.15E+01 -5.93E+01 5.28E+01 -2.63E+01 5.62E+00 -4.37E-02 0.00E+00 S14 Odd aspheric surface 1.15E+02 -1.64E+02 1.41E+02 -6.42E+01 1.02E+01 1.05E+00 0.00E+00 S15 Odd aspheric surface 2.20E+02 -3.55E+02 3.29E+02 -1.61E+02 3.17E+01 -1.77E+00 1.53E+00 S16 Odd aspheric surface -3.90E+01 -4.97E+01 1.13E+02 -8.20E+01 2.08E+01 4.15E-01 0.00E+00

[0234] Among them, A2, A4, A6, A8, A 10 , A 12 , A 14 , A 16 , A 18 , A 20 , A 22 and A 24 represent aspherical coefficients. The polynomial coefficients that do not exist in the table (such as A1, A3, etc.) are all 0.

[0235] It can be understood that among the 14 aspherical surfaces of the camera module 40 shown in Table 7 and Table 8, the aspherical surface shapes z of all even and odd aspherical surfaces can be defined by, but not limited to, the following aspherical formula:

[0236]

[0237] Among them, z is the sag height 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 camera module 40 into the above aspherical formula, the surface shapes of the object side and the image side of the first lens 451 to the seventh lens 457 of the camera module 40 in the third embodiment of the present application can be obtained.

[0238] Based on the data in Table 7 and Table 8, some parameters of the camera module 40 in the third embodiment of the present application are as shown in Table 9 below.

[0239] Table 9 Some parameters of the camera module 40 in the third embodiment

[0240] EFLT Fno TTL1 Sa IH 24.00 3.26 33.32 3.50 3.60

[0241] Among them, 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 = 33.32 mm. The size Sa of the first reflecting 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.

[0242] It can be 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.

[0243] 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 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, and the camera module 40 can achieve a wide range of continuous zoom ratios.

[0244] It can be understood that the ratio of the image height IH of the camera module 40 to the focal length of the wide-angle end, that is, IH / EFLT = 0.15. It can be understood that the target surface of the camera module 40 is relatively large, and 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.

[0245] It can be understood that the focal length EFLT of the telephoto end of the camera module 40 and the focal length EFLW of the wide-angle end of the camera module 40 satisfy: EFLT / EFLW = 2.00. It can be understood that the value range of EFLT / EFLW of the camera module 40 is relatively wide, and both the zoom ratio and the zoom magnification range of the camera module 40 are relatively large, which can improve the imaging quality of the camera module 40.

[0246] It can be understood that the total system length TTL1 of the camera module 40 and the focal length EFLT of the telephoto end of the camera module 40 satisfy: TTL1 / EFLT = 1.35. It can be understood that the value range of TTL1 / EFLW of the camera module 40 is relatively small. In this way, the total optical system length TTL1 of the camera module 40 is relatively small, which is beneficial to realizing the miniaturized setting of the camera module 40.

[0247] It can be understood that the aperture number Fno of the wide-angle end of the camera module 40 is small, and the aperture number Fno of the wide-angle end of the camera module 40 is small, that is, the aperture of the wide-angle end of the camera module 40 is large. In this way, the characteristics of the large aperture of the camera module 40 can be realized, and the high resolution and zoom continuity of the camera module 40 can be ensured.

[0248] It can be understood 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 can be understood that the total optical length TTL1 of the optical system of the camera module 40 can be small, which helps to realize the miniaturized setting 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 applicable scene range is larger, the target user group is wider, and the user experience is better.

[0249] In addition, the size Sa of the first reflection 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 beneficial to realize the ultra-thin setting of the camera module 40 or the electronic device 100.

[0250] Figure 13 It is a schematic diagram of the imaging optical distortion of the camera module 40 in the third embodiment.

[0251] As Figure 13 shown, the optical distortion ratios of the camera module 40 in the third embodiment of the present application at different field angles are all less than 2%, the optical distortion degree of the image is small, and the imaging quality of the camera module 40 is high.

[0252] Fourth embodiment: Please refer to Figure 5 and Figure 6 , in this embodiment, the lens of the camera module 40 is seven pieces. The camera module 40 includes a first lens 451, a second lens 452, a first reflection 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 an image sensor 43 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 seventh lens 457 all have positive optical powers. The second lens 452, the fourth lens 454, and the sixth lens 456 all have negative optical powers.

[0253] In this embodiment, the first lens 451 and the second lens 452 can form a first lens group G1. The third lens 453 and the fourth lens 454 can form a second lens group G2. The fifth lens 455 and the sixth lens 456 can form a third lens group G3.

[0254] In this embodiment, the first lens 451 satisfies: Nd = 1.64, Vd = 23.5. It can be understood that the light penetration of the lens of the first lens 451 is relatively strong, and the optical quality of the first lens 451 is relatively high, so that the image captured by the imaging module 40 is clearer.

[0255] 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 diverged by the third lens group G3, so that the light can be better imaged on the imaging surface and the imaging quality of the imaging module 40 can be improved.

[0256] Some design parameters of the imaging module 40 in the fourth embodiment of the present application are shown in Table 10 below.

[0257] Table 10 Partial design parameters of each lens of the imaging module 40 in the fourth embodiment

[0258]

[0259] In addition, the aspheric coefficients of each lens of the imaging module 40 in the fourth embodiment of the present application are shown in Table 11 below.

[0260] Table 11 Aspheric coefficients of each lens of the imaging module 40 in the fourth embodiment

[0261]

[0262]

[0263] Among them, A2, A4, A6, A8, A 10 , A 12 , A 14 , A 16 , A 18 , A 20 and A 22 represent aspheric coefficients. The polynomial coefficients that do not exist in the table (such as A1, A3, etc.) are all 0.

[0264] It can be understood that among the 14 aspheric surfaces of the imaging module 40 shown in Table 10 and Table 11, all even-order and odd-order aspheric surface profiles z can be defined by, but not limited to, the following aspheric formula:

[0265]

[0266] Among them, 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 profiles of the object side and the image side of the first lens 451 to the seventh lens 457 of the imaging module 40 in the fourth embodiment of the present application can be obtained.

[0267] Based on the data in Table 10 and Table 11, some parameters of the imaging module 40 in the fourth embodiment of the present application are as shown in Table 12 below.

[0268] Table 12 Some parameters of the imaging module 40 in the fourth embodiment

[0269] EFLT Fno TTL1 Sa IH 24.00 3.26 33.30 3.50 3.60

[0270] Among them, the focal length EFLT of the telephoto end of the imaging module 40 satisfies: EFLT = 24.00 mm. The f-number Fno of the wide-angle end of the imaging module 40 satisfies: Fno = 3.26. The total system length TTL1 of the imaging module 40 satisfies: TTL1 = 33.30 mm. The size Sa of the first reflecting element 458a of the imaging module 40 satisfies: Sa = 3.50 mm. The image height IH of the imaging module 40 satisfies: IH = 3.60 mm.

[0271] It can be understood that the focal length f1 of the first lens group G1 of the imaging module 40 satisfies: f1 = -40.62. The focal length f2 of the second lens group G2 of the imaging module 40 satisfies: f1 = 11.36. The focal length f3 of the third lens group G3 of the imaging module 40 satisfies: f3 = -18.52. The focal length f4 of the fourth lens group G4 of the imaging module 40 satisfies: f4 = 28.39.

[0272] Then, the focal length f1 of the first lens group G1 of the imaging module 40 and the focal length f2 of the second lens group G2 of the imaging module 40 satisfy: f1 / f2 = -3.58. The focal length f2 of the second lens group G2 of the imaging module 40 and the focal length f3 of the third lens group G3 of the imaging module 40 satisfy: f2 / f3 = -0.61. 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, and the imaging module 40 can achieve a wide range of continuous zoom ratios.

[0273] It can be understood that the ratio of the image height IH of the imaging module 40 to the focal length at the wide-angle end, that is, IH / EFLT = 0.15. It can be understood that the target surface of the imaging module 40 is relatively large, and a chip with a larger volume and more comprehensive functions can be arranged on the target surface of the imaging module 40, thereby improving the shooting performance of the imaging module 40.

[0274] It can be understood that the focal length EFLT at the telephoto end of the imaging module 40 and the focal length EFLW at the wide-angle end of the imaging module 40 satisfy: EFLT / EFLW = 2.00. It can be understood that the value range of EFLT / EFLW of the imaging module 40 is relatively wide, and both the zoom ratio and the zoom magnification range of the imaging module 40 are relatively large, which can improve the imaging quality of the imaging module 40.

[0275] It can be understood that the total system length TTL1 of the imaging module 40 and the focal length EFLT at the telephoto end of the imaging module 40 satisfy: TTL1 / EFLT = 1.39. It can be understood that the value range of TTL1 / EFLW of the imaging module 40 is relatively small. In this way, the total optical system length TTL1 of the imaging module 40 is relatively small, which is beneficial to realizing the miniaturized setting of the imaging module 40.

[0276] It can be understood that the aperture number Fno at the wide-angle end of the imaging module 40 is relatively small, that is, the aperture at the wide-angle end of the imaging module 40 is relatively large. In this way, the characteristic of the large aperture of the imaging module 40 can be realized, and the high resolution and zoom continuity of the imaging module 40 can be ensured.

[0277] It can be understood that the focusing stroke △L2 of the second lens group G₂ of the imaging module 40 and the focusing stroke △L3 of the third lens group G₃ of the imaging module 40 satisfy: △L2 / △L3 = 2.82. It can be understood that the total optical system length TTL1 of the imaging module 40 can be relatively small, which helps to realize the miniaturized setting of the imaging module 40. In addition, the focusing speed of the imaging module 40 is faster, the imaging quality of the imaging module 40 is higher, the applicable scene range is larger, the target user group is wider, and the user experience is better.

[0278] In addition, the size Sa of the first reflection element 458a is relatively small, which can reduce the length of the imaging module 40 in the first direction, thereby reducing the volume of the imaging module 40. When the imaging module 40 is applied to the imaging module 40 or the electronic device 100, it is further beneficial to realize the ultra-thin setting of the imaging module 40 or the electronic device 100.

[0279] Figure 14 It is a schematic diagram of the imaging optical distortion of the imaging module 40 in the fourth embodiment.

[0280] As Figure 14As shown, the optical distortion ratios of the imaging module 40 in the fourth embodiment of the present application at different field angles are all less than 2%, the degree of optical distortion of the image is small, and the imaging quality of the imaging module 40 is high.

[0281] The fifth embodiment: Please refer to Figure 15 and Figure 16 , Figure 15 is Figure 2 a partial structural simplified schematic diagram of another embodiment at the wide-angle end of the imaging module 40 shown in Figure 3 . Figure 16 is Figure 2 a partial structural simplified schematic diagram of another embodiment at the telephoto end of the imaging module 40 shown in Figure 3 . In this embodiment, the lens of the imaging module 40 has six pieces. The imaging module 40 includes a first lens 451, a second lens 452, a first reflecting element 458a, a third lens 453, a fourth lens 454, a fifth lens 455, a sixth lens 456, a filter 44, and an image sensor 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 powers. The second lens 452, the fourth lens 454, and the sixth lens 456 all have negative optical powers.

[0282] In this embodiment, the first lens 451 and the second lens 452 can form a first lens group G1. The third lens 453 and the fourth lens 454 can form a second lens group G2. The fifth lens 455 and the sixth lens 456 can form a third lens group G3.

[0283] In this embodiment, the first lens 451 satisfies: Nd = 1.64, Vd = 23.5. It can be understood that the light penetration of the lens 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 imaging module 40 is clearer.

[0284] It can be understood that in Tables 13 and 14, S15 and S16 can respectively represent the object side surface and the image side surface of the filter 44.

[0285] The partial design parameters of the imaging module 40 in the fifth embodiment of the present application are as shown in Table 13 below.

[0286] Table 13 Partial design parameters of each lens of the imaging module 40 in the fifth embodiment

[0287]

[0288] Among them, R is the radius of curvature of the first lens 451 to the sixth lens 456, the first reflection element 458a, and the filter 44 of the imaging module 40. Nd is the refractive index of the materials of the first lens 451 to the sixth lens 456, the first reflection element 458a, and the filter 44 of the imaging module 40. Vd is the Abbe number of the first lens 451 to the sixth lens 456, the first reflection element 458a, and the filter 44 of the imaging module 40.

[0289] In addition, Th is the thickness of the first lens 451 to the sixth lens 456 and the filter 44 of the imaging module 40. The thickness of S14 refers to the distance between the image side of the sixth lens 456 and the object side of the filter 44. The thickness of S15 refers to the distance between the object side and the image side of the filter 44. The thickness of S16 refers to the distance between the image side of the filter 44 and the imaging surface.

[0290] In addition, the aspheric coefficients of each lens of the imaging module 40 in the fifth embodiment of the present application are as shown in Table 14 below.

[0291] Table 14 Aspheric coefficients of each lens of the imaging module 40 in the fifth embodiment

[0292] Type Norm R K <![CDATA[A2]]> <![CDATA[A4]]> <![CDATA[A6]]> <![CDATA[A8]]> <![CDATA[A 10 > S1 Odd aspheric surface 5.00E+00 0.00E+00 0.00E+00 4.00E-02 5.32E-01 -3.40E+00 1.54E+01 S2 Odd aspheric surface 4.49E+00 0.00E+00 0.00E+00 5.36E-03 5.52E-01 -3.82E+00 1.64E+01 S3 Odd aspheric surface 4.42E+00 0.00E+00 0.00E+00 -3.42E-01 6.33E-01 -6.03E+00 3.35E+01 S4 Odd aspheric surface 4.47E+00 0.00E+00 0.00E+00 -3.03E-01 4.33E-01 -3.79E+00 2.25E+01 S7 Odd aspheric surface 4.10E+00 0.00E+00 0.00E+00 -4.12E-02 1.21E-01 -9.82E-01 3.86E+00 S8 Odd aspheric surface 4.19E+00 0.00E+00 0.00E+00 2.11E-01 -1.22E+00 8.63E+00 -3.03E+01 S9 Odd aspheric surface 3.72E+00 0.00E+00 0.00E+00 8.04E-02 -9.48E-01 5.69E+00 -1.69E+01 S10 Odd aspheric surface 3.41E+00 0.00E+00 0.00E+00 1.09E-01 -3.00E-01 1.91E+00 -5.60E+00 S11 Odd aspheric surface 3.50E+00 0.00E+00 0.00E+00 5.25E-01 -4.30E-01 1.76E+00 -4.48E+00 S12 Odd aspheric surface 3.30E+00 0.00E+00 0.00E+00 3.13E-01 -4.92E-01 3.52E+00 -1.26E+01 S13 Odd aspheric surface 3.29E+00 0.00E+00 0.00E+00 -2.27E+00 3.99E+00 1.41E-01 -2.52E+01 S14 Odd aspheric surface 3.52E+00 0.00E+00 0.00E+00 -2.90E+00 7.91E+00 -1.47E+01 1.46E+01 Type <![CDATA[A 12 > <![CDATA[A 14 > <![CDATA[A 16 > <![CDATA[A 18 > <![CDATA[A 20 > <![CDATA[A 22 > S1 Odd aspheric surface -3.91E+01 5.82E+01 -5.01E+01 2.24E+01 -3.35E+00 -4.21E-01 S2 Odd aspheric surface -3.82E+01 5.17E+01 -3.99E+01 1.57E+01 -2.18E+00 -7.14E-02 S3 Odd aspheric surface -9.73E+01 1.62E+02 -1.57E+02 8.07E+01 -1.60E+01 -8.50E-01 S4 Odd aspheric surface -6.92E+01 1.21E+02 -1.23E+02 6.83E+01 -1.59E+01 0.00E+00 S7 Odd aspheric surface -8.93E+00 1.23E+01 -9.61E+00 3.39E+00 1.60E-01 -3.20E-01 S8 Odd aspheric surface 6.21E+01 -7.88E+01 6.09E+01 -2.60E+01 4.42E+00 1.77E-01 S9 Odd aspheric surface 3.07E+01 -3.63E+01 2.73E+01 -1.19E+01 2.24E+00 0.00E+00 S10 Odd aspheric surface 1.10E+01 -1.46E+01 1.24E+01 -5.98E+00 1.23E+00 0.00E+00 S11 Odd aspheric surface 8.14E+00 -1.06E+01 9.44E+00 -5.19E+00 1.44E+00 -1.23E-01 S12 Odd aspheric surface 2.95E+01 -4.41E+01 3.91E+01 -1.79E+01 2.94E+00 1.46E-01 S13 Odd aspheric surface 8.06E+01 -1.35E+02 1.22E+02 -4.78E+01 -3.08E+00 5.38E+00 S14 Odd aspheric surface 5.86E+00 -4.29E+01 6.04E+01 -3.82E+01 9.26E+00 0.00E+00

[0293] Among them, A2, A4, A6, A8, A 10 , A 12 , A 14 , A 16 , A 18 , A 20 and A 22 represent aspheric coefficients. The polynomial coefficients that do not exist in the table (such as A1, A3, etc.) are all 0. Norm R represents the normalized radii of the object side and the image side of the first lens 451 to the sixth lens 456.

[0294] It can be understood that among the 12 aspheric surfaces of the imaging module 40 shown in Table 13 and Table 14, all even and odd aspheric surface profiles z can be defined by, but not limited to, the following aspheric formula:

[0295]

[0296] Among them, z is the sag of the aspheric surface, r is the radial coordinate of the aspheric surface, c is the vertex spherical curvature of the aspheric surface, K is the conic constant, and A i represents the i-th order aspheric coefficient. Substituting the design parameters of the first lens 451 to the sixth lens 456 of the imaging module 40 into the above aspheric formula, the surface profiles of the object side and the image side of the first lens 451 to the sixth lens 456 of the imaging module 40 in the fifth embodiment of the present application can be obtained.

[0297] Based on the data in Table 13 and Table 14, some parameters of the camera module 40 in the fifth embodiment of the present application are as shown in Table 15 below.

[0298] Table 15 Some Parameters of the Camera Module 40 in the Fifth Embodiment

[0299] EFLT Fno TTL1 Sa IH 24.00 3.26 33.32 3.50 3.60

[0300] Among them, 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 = 33.32 mm. The size Sa of the first reflecting 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.

[0301] It can be 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. The focal length f3 of the third lens group G3 of the camera module 40 satisfies: f3 = -14.27.

[0302] 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 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, and the camera module 40 can achieve a wide range of continuous zoom ratios.

[0303] It can be understood that the ratio of the image height IH of the camera module 40 to the focal length of the wide-angle end, that is, IH / EFLT = 0.15. It can be understood that the target surface of the camera module 40 is relatively large, and 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.

[0304] It can be understood that the focal length EFLT of the telephoto end of the camera module 40 and the focal length EFLW of the wide-angle end of the camera module 40 satisfy: EFLT / EFLW = 2.00. It can be understood that the value range of EFLT / EFLW of the camera module 40 is relatively wide, and both the zoom ratio and the zoom magnification range of the camera module 40 are relatively large, which can improve the imaging quality of the camera module 40.

[0305] It can be understood that the total system length TTL1 of the imaging module 40 and the focal length EFLT of the telephoto end of the imaging module 40 satisfy: TTL1 / EFLT = 1.33. It can be understood that the value range of TTL1 / EFLW of the imaging module 40 is relatively small. In this way, the total optical system length TTL1 of the imaging module 40 is small, which is beneficial to realizing the miniaturized setting of the imaging module 40.

[0306] It can be understood that the aperture number Fno of the wide-angle end of the imaging module 40 is small. That is, the aperture number Fno of the wide-angle end of the imaging module 40 is small, which means that the aperture of the wide-angle end of the imaging module 40 is large. In this way, the characteristic of the large aperture of the imaging module 40 can be realized, and the high resolution and zoom continuity of the imaging module 40 can be ensured.

[0307] It can be understood that the focusing stroke △L2 of the second lens group G2 of the imaging module 40 and the focusing stroke △L3 of the third lens group G3 of the imaging module 40 satisfy: △L2 / △L3 = 2.65. It can be understood that the total optical system length TTL1 of the imaging module 40 can be small, which helps to realize the miniaturized setting of the imaging module 40. In addition, the focusing speed of the imaging module 40 is faster, the imaging quality of the imaging module 40 is higher, the applicable scene range is larger, the target user group is wider, and the user experience is better.

[0308] In addition, the size Sa of the first reflecting element 458a is small, which can reduce the length of the imaging module 40 in the first direction, thereby reducing the volume of the imaging module 40. When the imaging module 40 is applied to the imaging module 40 or the electronic device 100, it is further beneficial to realize the ultra-thin setting of the imaging module 40 or the electronic device 100.

[0309] Figure 17 It is a schematic diagram of the imaging optical distortion of the imaging module 40 in the fifth embodiment.

[0310] As Figure 17 shown, the optical distortion ratios of the imaging module 40 in the fifth embodiment of the present application at different field angles are all less than 5%, the optical distortion degree of the image is small, and the imaging quality of the imaging module 40 is high.

[0311] Figure 18 Is Figure 2 A simplified partial structure schematic diagram of the imaging module 40 shown in another embodiment.

[0312] As Figure 18 shown, the imaging module 40 may further include a second reflecting element 458b. Exemplarily, the second reflecting element 458b may be located on the image side of the third lens group G3. In other words, the second reflecting element 458b may be located on the side of the third lens group G3 away from the second lens group G2.

[0313] Exemplarily, the second reflecting element 458b is configured to change the optical axis in the second direction to a third direction, and both the third direction and the first direction intersect with the second direction. It can be understood that since the second reflecting element 458b enables the photosensitive chip 43 to have a larger target surface, thus, a chip with a larger volume and more comprehensive functions can be arranged on the target surface of the imaging module 40, improving the shooting performance of the imaging module 40.

[0314] It should be noted that, without conflict, the embodiments and features in the embodiments of the present application can be combined with each other, and any combination of features in different embodiments is also within the protection scope of the present application. That is to say, the above-described multiple embodiments can also be arbitrarily combined according to actual needs.

[0315] It should be noted that all the above drawings are exemplary illustrations of the present application and do not represent the actual size of the product. Also, the dimensional ratio relationship between components in the drawings does not serve as a limitation on the actual product of the present application. The above are only some embodiments and implementation manners of the present application, and the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present application, and all should be covered by the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An imaging module, characterized in that, It includes a first lens group, a first reflecting element, a second lens group, a third lens group, and an image sensor 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 a first direction to a 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 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.

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 imaging 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 a positive optical power, and the object side surface of the first lens is a convex surface.

5. The imaging 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 imaging 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 a negative optical power.

8. The imaging module according to any one of claims 1 to 7, characterized in that, The optical lens further includes a diaphragm, and the diaphragm 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 a positive optical power.

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

12. The imaging 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 a 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 imaging module is at the telephoto end, the first driving mechanism drives the second lens group to move in a direction closer to the first reflecting element, and the second driving mechanism drives the third lens group to move in a direction closer to the first reflecting element.

14. The imaging module according to any one of 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 of the imaging module satisfy: 1.2 ≤ EFLT / EFLW ≤ 3.

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

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

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

18. The camera module according to any one of claims 1 to 17, characterized in that, The zoom ratio of the imaging module is in the range of three 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 imaging module is in the range of 70 millimeters to 120 millimeters.

20. An electronic device, characterized in that, It includes a housing and the imaging module according to any one of claims 1 to 18, and the imaging module is installed in the housing.

Images