Optical lens, camera module and electronic device

Abstract

An optical lens (10), a camera module (200) and an electronic device (1000). The optical lens (10) comprises a first lens group (G1), a second lens group (G2) and a third lens group (G3) which are arranged from an object side to an image side. The first lens group (G1) comprises at least one lens having a negative focal power. The second lens group (G2) comprises at least two lenses, and at least one lens of the second lens group (G2) has a negative focal power. The third lens group (G3) comprises at least one lens having a negative focal power. The first lens group (G1) and / or the second lens group (G2) are / is a zoom lens group. The optical lens (10) satisfies 0.1 ≤ fw / ImgH ≤ 1.1, where fw is the focal length of the optical lens (10) at a wide-angle end, and ImgH is half of a diagonal length of an effective pixel area on an imaging surface of the optical lens (10). The optical lens (10) can realize integration of a main camera lens and a wide-angle lens, and has a good imaging quality at both a main camera end and the wide-angle end.

Description

Optical lens, camera module and electronic device

[0001] This application claims priority to the Chinese patent application No. 202411011430.3, filed on July 25, 2024, and entitled "Optical lens, camera module and electronic device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

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

[0003] With the progress of science and technology, camera modules are increasingly widely used. In recent years, the demand for shooting of electronic devices such as mobile phones is increasingly high, and major manufacturers have put forward more stringent requirements for the imaging quality of optical lenses in camera modules, and the demand for new markets for shooting is more diverse. Currently, main camera lenses and wide-angle lenses are arranged at intervals at the back end of a mobile phone, and the volume size accounts for a high proportion, and the user experience is not good. SUMMARY

[0004] Embodiments of the present application provide an optical lens, a camera module and an electronic device. The present application realizes the integration of a main camera lens and a wide-angle lens through the structural design of the optical lens, which is conducive to saving space and improving the user experience.

[0005] In a first aspect, an embodiment of the present application provides an optical lens. The optical lens includes a first lens group, a second lens group and a third lens group arranged from an object side to an image side; the first lens group includes at least one lens with negative focal power; the second lens group includes at least two lenses, at least one lens in the second lens group has negative focal power; the third lens group includes at least one lens with negative focal power; the first lens group and / or the second lens group is a zoom lens group, and the distance between the first lens group and the second lens group increases during the process of the optical lens from a main camera end to a wide-angle end; the optical lens satisfies the following relationship: 0.1≤fw / ImgH≤1.1, where fw is the focal length of the optical lens at the wide-angle end, and ImgH is half the length of the diagonal of the effective pixel area on the imaging surface of the optical lens. In an embodiment of the present application, by setting 0.1≤fw / ImgH≤1.1, the optical lens can realize large field of view and large target surface imaging at the wide-angle end, which is conducive to increasing the clarity of imaging, the clarity of the image quality is high, and the imaging quality is improved.

[0006] The optical lens can realize integration of the main camera lens and the wide-angle lens, save space occupied by the optical lens in the electronic device, and realize non-working state, main camera and wide-angle switching by moving the first lens group and / or the second lens group, has good zooming effect, and effectively improves user experience. The optical lens has a larger field of view at the wide-angle end, can realize large field of view imaging, can effectively correct aberration and distortion of the optical lens, and has good imaging quality at the main camera end and the wide-angle end.

[0007] In a possible implementation, in the process of the optical lens from the main camera end to the wide-angle end, the first lens group moves towards the object side along the optical axis and / or the second lens group moves towards the image side along the optical axis. In the focusing process of switching the optical lens from the main camera end to the wide-angle end, the first lens group moves towards the object side along the optical axis, or the second lens group moves towards the image side along the optical axis, or the first lens group moves towards the object side and the second lens group can move towards the image side to increase the distance between the first lens group and the second lens group, and realize wide-angle shooting.

[0008] In a possible implementation, in the process of the optical lens from the non-working state to the main camera end, the distance between the second lens group and the third lens group increases. The first lens group and the second lens group can both move towards the object side along the optical axis.

[0009] In a possible implementation, the first lens group has negative optical power. The first lens group with negative optical power in the embodiment of the present application can expand the field of view of the optical lens at the wide-angle end, realize large field of view imaging of the optical lens, and meet the use requirements of user diversity.

[0010] In a possible implementation, the second lens group has positive optical power. The second lens group with positive optical power in the embodiment of the present application is beneficial to improving the imaging quality of the optical lens at the main camera end, and is beneficial to realizing miniaturization of the optical lens.

[0011] In a possible implementation, the first lens of the second lens group has positive optical power. The first lens of the second lens group with positive optical power in the embodiment of the present application is beneficial to improving the imaging quality of the optical lens at the main camera end. It can be understood that the first lens of the second lens group is the lens closest to the object side in the second lens group.

[0012] In a possible implementation, the optical lens satisfies the following relationship: 0.05 < H11 / TTL01 ≤ 0.7, H11 is the pop-up height of the optical lens from a non-working state to a main camera end, and TTL01 is the distance on the optical axis from the object side of the first lens of the first lens group to the imaging surface when the optical lens is at the main camera end. By setting 0.05 < H11 / TTL01 ≤ 0.7, the pop-up stroke of the optical lens when switching to the main camera end is small, the power requirement of the motor is small, the volume of the motor for driving the movement of the lens group is reduced, the total optical length of the optical lens is small, and the miniaturization design of the optical lens is facilitated.

[0013] In a possible implementation, the optical lens satisfies the following relationship: 0.05 < H22 / TTL02 ≤ 0.7, H22 is the pop-up height of the optical lens from a non-working state to a wide-angle end, and TTL02 is the distance on the optical axis from the object side of the first lens of the first lens group to the imaging surface when the optical lens is at the wide-angle end. By setting 0.05 < H22 / TTL02 ≤ 0.7, the pop-up stroke of the optical lens when switching to the wide-angle end is small, the power requirement of the motor is small, the volume of the motor for driving the movement of the lens group is reduced, the total optical length of the optical lens is small, and the miniaturization design of the optical lens is facilitated.

[0014] In a possible implementation, the optical lens satisfies the following relationship: TTL01 / TTL02 ≤ 0.9, TTL01 is the distance on the optical axis from the object side of the first lens of the first lens group to the imaging surface when the optical lens is at the main camera end, and TTL02 is the distance on the optical axis from the object side of the first lens of the first lens group to the imaging surface when the optical lens is at the wide-angle end. By setting TTL01 / TTL02 ≤ 0.9, the size ratio of the overall optical lens is protected, the miniaturization of the overall optical lens is achieved, and the space occupied by the optical lens in the electronic device is avoided.

[0015] In a possible implementation, the optical lens satisfies the following relationship: 1.4 ≤ n21 ≤ 1.9, n21 is the refractive index of the first lens of the second lens group. By setting the refractive index n21 of the first lens of the second lens group to be greater than or equal to 1.4 and less than or equal to 1.9, the total optical length of the optical lens is reduced, and the miniaturization design of the optical lens is achieved.

[0016] In a possible implementation, the optical lens satisfies the following relationship: 0.1<|Fno1 / Fno2|≤1, Fno1 is the F number of the optical lens at the main camera end, and Fno2 is the F number of the optical lens at the wide-angle end. By setting 0.1<|Fno1 / Fno2|≤1, the embodiment of the present application is beneficial to improving the light intake at the main camera end and the light intake at the wide-angle end of the optical lens, and improving the imaging quality of the optical lens.

[0017] In a possible implementation, the optical lens satisfies the following relationship: 1<fm / fw≤2.0, fm is the effective focal length of the optical lens at the main camera end. By setting the ratio of the effective focal length fm of the optical lens 10 at the main camera end to the effective focal length fw of the optical lens 10 at the wide-angle end to be greater than 1 and less than or equal to 2, the embodiment of the present application can protect the zoom ratio of the optical lens 10, so that the optical lens 10 has a larger zoom ratio.

[0018] In a possible implementation, the optical lens satisfies the following relationship: 0≤|f21 / fn|≤100, f21 is the focal length of the first lens of the second lens group, and fn is the focal length of the lens closest to the image side of the optical lens. By setting the absolute value of the ratio of the focal length f21 of the first lens of the second lens group to the focal length fn of the lens closest to the image side of the optical lens to be greater than or equal to 0 and less than or equal to 100, the embodiment of the present application is beneficial to improving the modulation transfer function performance of the optical lens 10 at the main camera end and the wide-angle end, and improving the imaging quality of the optical lens.

[0019] In a possible implementation, the third lens group is a zoom lens group. When the third lens group is a zoom lens group, the focal length range of the optical lens can be further increased. By setting the working mode of the third lens group, the embodiment of the present application is beneficial to the miniaturization of the optical lens and a larger zoom ratio.

[0020] In a possible implementation, the third lens group is a fixed lens group. When the third lens group is a fixed lens group, the structure of the optical lens is simple, which is beneficial to engineering.

[0021] In a possible implementation, the third lens group has negative refractive power. By setting the third lens group to have negative refractive power, the embodiment of the present application is beneficial to correcting distortion, expanding the target surface size, realizing large target surface imaging, increasing the clarity of imaging, and improving the imaging quality.

[0022] In a possible implementation, the lens closest to the image side in the optical lens has negative refractive power. By setting the lens closest to the image side in the optical lens to have negative refractive power, the embodiment of the present application is beneficial to correcting distortion and improving the imaging quality of the optical lens.

[0023] In a possible implementation, the optical lens comprises a variable aperture, and the opening size of the variable aperture is reduced in the focusing process of switching the optical lens from the primary camera end to the wide-angle end. In the primary camera end, the aperture size can be increased by adjusting the variable aperture, the depth of field is shallow, the blurring effect is good, and the primary camera end is beneficial to shooting. When shooting in the wide-angle end, the blurring effect is not suitable for improving the shooting definition, and therefore the variable aperture needs to be adjusted to be small to improve the shooting quality of the wide-angle end.

[0024] In some embodiments, the material of the lens in the optical lens can be glass, and the glass material of the lens is beneficial to improve the imaging quality, reduce the chromatic aberration and temperature drift effect of the optical lens, and avoid the influence of temperature change on the focal length of the optical lens. In some embodiments, the material of the lens in the optical lens can be plastic, and the plastic material of the lens can reduce the weight and cost of the optical lens. It can be understood that the optical lens can also have both glass lenses and plastic lenses, and the glass material of the lens is beneficial to improve the imaging quality, reduce the chromatic aberration and temperature drift effect, and the plastic material of the lens can reduce the weight and cost of the optical lens.

[0025] In some embodiments, the object side or the image side of the lens in the optical lens can be spherical or aspherical, which is not limited in the embodiments of the application and can be set as needed.

[0026] In a second aspect, the embodiments of the application provide a camera module, which comprises a photosensitive element and the optical lens described in any of the foregoing embodiments, and the photosensitive element is located on the image side of the optical lens. The camera module in the embodiments of the application can realize the integration of the primary camera lens and the wide-angle lens, and has good imaging quality in the primary camera end and the wide-angle end.

[0027] In a third aspect, the embodiments of the application further provide an electronic device, which comprises an image processor and the camera module described above, the image processor is in communication connection with the camera module, and the image processor is used to acquire image data from the camera module and process the image data. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the application or the background art, the drawings needed to be used in the embodiments of the application or the background art will be described below.

[0029] FIG. 1 is a structural schematic diagram of an electronic device provided by the embodiments of the application;

[0030] FIG. 2 is a structural schematic diagram of a camera module in the first embodiment of the application;

[0031] FIG. 3 is a structural schematic diagram of the camera module shown in FIG. 2 in a primary camera state;

[0032] Figure 4 is a structural schematic diagram of the camera module shown in Figure 2 in a wide-angle state;

[0033] Figure 5 is an MTF diagram of the camera module shown in the first embodiment in a main camera state;

[0034] Figure 6 is an MTF diagram of the camera module shown in the first embodiment in a wide-angle state;

[0035] Figure 7 is a structural schematic diagram of a camera module of a second embodiment of the present application;

[0036] Figure 8 is a structural schematic diagram of the camera module shown in Figure 7 in a main camera state;

[0037] Figure 9 is a structural schematic diagram of the camera module shown in Figure 7 in a wide-angle state;

[0038] Figure 10 is an MTF diagram of the camera module shown in the second embodiment in a main camera state;

[0039] Figure 11 is an MTF diagram of the camera module shown in the second embodiment in a wide-angle state;

[0040] Figure 12 is a structural schematic diagram of a camera module of a third embodiment of the present application;

[0041] Figure 13 is a structural schematic diagram of the camera module shown in Figure 12 in a main camera state;

[0042] Figure 14 is a structural schematic diagram of the camera module shown in Figure 12 in a wide-angle state;

[0043] Figure 15 is an MTF diagram of the camera module shown in the third embodiment in a main camera state;

[0044] Figure 16 is an MTF diagram of the camera module shown in the third embodiment in a wide-angle state;

[0045] Figure 17 is a structural schematic diagram of a camera module of a fourth embodiment of the present application;

[0046] Figure 18 is a structural schematic diagram of the camera module shown in Figure 17 in a main camera state;

[0047] Figure 19 is a structural schematic diagram of the camera module shown in Figure 17 in a wide-angle state;

[0048] Figure 20 is an MTF diagram of the camera module shown in the fourth embodiment in a main camera state;

[0049] Figure 21 is an MTF diagram of the camera module shown in the fourth embodiment in a wide-angle state;

[0050] Figure 22 is a structural schematic diagram of a camera module of a fifth embodiment of the present application;

[0051] FIG. 23 is a structural schematic diagram of the camera module shown in FIG. 22 in a main camera state;

[0052] FIG. 24 is a structural schematic diagram of the camera module shown in FIG. 22 in a wide-angle state;

[0053] FIG. 25 is an MTF diagram of the camera module shown in the fifth embodiment in a main camera state;

[0054] FIG. 26 is an MTF diagram of the camera module shown in the fifth embodiment in a wide-angle state;

[0055] FIG. 27 is a structural schematic diagram of a camera module of a sixth embodiment of the present application;

[0056] FIG. 28 is a structural schematic diagram of the camera module shown in FIG. 27 in a main camera state;

[0057] FIG. 29 is a structural schematic diagram of the camera module shown in FIG. 27 in a wide-angle state;

[0058] FIG. 30 is an MTF diagram of the camera module shown in the sixth embodiment in a main camera state;

[0059] FIG. 31 is an MTF diagram of the camera module shown in the sixth embodiment in a wide-angle state. DETAILED DESCRIPTION

[0060] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0061] Focal power, equal to the difference between the convergence degree of the image-side light flux and the convergence degree of the object-side light flux, represents the ability of an optical system to deflect light rays.

[0062] A lens or lens group having positive focal power has a positive focal length and has the effect of converging light rays.

[0063] A lens or lens group having negative focal power has a negative focal length and has the effect of diverging light rays.

[0064] Focal length, also known as focal length, is a measure of the convergence or divergence of light in an optical system, which refers to the vertical distance from the optical center of the lens or lens group to the focal plane when the object at infinity forms a clear image through the lens or lens group. From a practical point of view, it can be understood as the distance from the lens center to the plane when the object is at infinity. For a fixed-focus lens, the position of the optical center is fixed; for a long-focus lens, the change of the optical center of the lens brings the change of the focal length of the lens.

[0065] Object side, with the lens as the boundary, the side where the object is located is the object side, and the surface of the lens close to the object side is called the object side.

[0066] Image side, with the lens as the boundary, the side where the image of the object is located is the image side, and the surface of the lens close to the image side is called the image side.

[0067] Aperture diaphragm, is a device used to control the amount of light that enters the lens into the body of the light-sensitive surface, which is usually in the lens.

[0068] F-number, also known as F-number, is a relative value (the reciprocal of the relative aperture) derived from the focal length of the lens / the diameter of the lens entrance pupil. The smaller the F-number, the more light will enter in the same unit of time. The larger the F-number, the smaller the depth of field, and the background content of the photograph will be blurred, similar to the effect of a long-focus lens.

[0069] Total track length (TTL), refers to the total length from the surface closest to the object side of the lens to the imaging surface.

[0070] Imaging surface, located on the image side of all lenses in the long-focus lens, and the light forms an image after passing through each lens in the long-focus lens.

[0071] Optical axis, is an axis that passes vertically through the center of the lens. The optical axis of the lens is the axis that passes through the center of each lens in the lens. When light parallel to the optical axis enters a convex lens, the ideal convex lens should be all the light converging at a point behind the lens, and this point where all the light converges is called the focal point.

[0072] Abbe number (Abbe), namely dispersion coefficient, is the ratio of the difference in refractive index of an optical material at different wavelengths, representing the degree of dispersion of the material.

[0073] Field of view (FOV), in optical instruments, the angle formed by the two edges of the maximum range of the object image that can pass through the lens of the optical instrument with the lens as the vertex, is called the field of view. The size of the field of view determines the field of view of the optical instrument, the larger the field of view, the larger the field of view, and the smaller the optical magnification.

[0074] Aberration, the optical system near the axial region has the nature of the ideal optical system, a point on the object emitted near the axial rays intersect with the image plane in a point (also known as the near the axial image point), but the actual through the lens aperture of the light is difficult to perfect intersection in a point, but with the near the axial image point position has a certain deviation, these differences are collectively referred to as aberration.

[0075] Meridian plane, the plane formed by the principal ray (principal beam) of the object point outside the optical axis and the optical axis, is called the meridian plane.

[0076] Sagittal surface, the plane passing through the principal ray (principal beam) of the object point outside the optical axis and perpendicular to the meridian plane, is called the sagittal surface.

[0077] It should be understood that "first", "second" and the like used in the present application are only used for the purpose of distinguishing description, and cannot be understood as indicating or implying relative importance, nor indicating or implying sequence.

[0078] In the description of the present application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0079] In the description of the present application, it should be noted that unless otherwise specified and limited, the term "connection" should be understood broadly, for example, it can be fixed connection, can also be detachable connection, can also be abutting connection or integral connection; for those skilled in the art, the specific meaning of the above-mentioned term in the present application can be understood according to the specific circumstances.

[0080] Embodiments of the present application provide an optical lens, a camera module applying the optical lens, and an electronic device comprising the camera module. The optical lens comprises a first lens group, a second lens group and a third lens group arranged from an object side to an image side; the first lens group comprises at least one lens with negative refractive power; the second lens group comprises at least two lenses, at least one lens in the second lens group has negative refractive power; the third lens group comprises at least one lens with negative refractive power; the first lens group and / or the second lens group is a zoom lens group, the distance between the first lens group and the second lens group increases during the process of the optical lens from a main camera end to a wide-angle end; the optical lens satisfies the following relationship: 0.1≤fw / ImgH≤1.1, fw is the focal length of the optical lens at the wide-angle end, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface of the optical lens. The optical lens in the embodiments of the present application realizes the integration of the main camera lens and the wide-angle lens, and has good imaging quality at the main camera end and the wide-angle end, which is beneficial to save the space of the optical lens in the electronic device and improve the user experience.

[0081] As shown in FIG. 1, FIG. 1 is a structural schematic diagram of an electronic device 1000. The electronic device 1000 can be a mobile phone, a tablet, a wearable device, or the like, which has a photographing or video shooting function. The present application takes the electronic device 1000 as a mobile phone for example to describe. The electronic device 1000 can comprise at least one camera module 200.

[0082] The electronic device 1000 can comprise a housing 100, a camera module 200 and an image processor 300. The camera module 200 and the image processor 300 are located in the housing 100, and the camera module 200 is in communication connection with the image processor 300. The camera module 200 is used to acquire image data and input the image data to the image processor 300, and the image processor 300 is used to process the image data acquired from the camera module 200. The communication connection between the camera module 200 and the image processor 300 can comprise data transmission through electrical connection such as wiring, or can realize data transmission through coupling and the like. It can be understood that the camera module 200 and the image processor 300 can also realize communication connection through other data transmission modes.

[0083] The function of the image processor 300 is to optimize the digital image signal through a series of complex mathematical algorithm operations, and finally transmit the processed signal to the display for display. The image processor 300 can be an image processing chip or a digital signal processing chip (DSP), etc., which can process image signals and digital signals. Its role is to quickly transmit the data obtained by the photosensitive chip of the camera module 200 to the central processor and refresh the photosensitive chip, so the quality of the DSP chip and its stability directly affect the picture quality (such as color saturation, definition, etc.).

[0084] In a specific embodiment, the camera module 200 can be arranged on the back of the electronic device 1000, and the camera module 200 serves as the rear camera of the electronic device 1000. In other embodiments, the camera module 200 can also be arranged on the front of the electronic device 1000, and serves as the front camera of the electronic device 1000. Both the front camera and the rear camera can be used for self-shooting, and can also be used for the shooter to shoot other objects.

[0085] It can be understood that the mounting position of the camera module 200 of the electronic device 1000 in the embodiment shown in FIG. 1 is only schematic, and the application does not strictly limit the mounting position of the camera module 200. In some other embodiments, the camera module 200 can also be mounted on other positions of the electronic device 1000, for example, the camera module 200 can be mounted on the upper middle or upper right corner of the electronic device 1000. Alternatively, the camera module 200 can also not be arranged on the main body of the mobile phone, but arranged on an auxiliary component that is movable or rotatable relative to the main body of the mobile phone, for example, the auxiliary component can be extended, retracted or rotated from the main body of the mobile phone.

[0086] In some embodiments, the electronic device 1000 can further include an analog-to-digital converter (also referred to as an A / D converter, not shown in FIG. 1). The analog-to-digital converter is connected between the camera module 200 and the image processor 300. The analog-to-digital converter is used to convert the signal generated by the camera module 200 into a digital image signal and transmit it to the image processor 300, and then the image processor 300 processes the digital image signal, and finally displays the image or video through the display.

[0087] In some embodiments, the electronic device 1000 can further include a memory (not shown in FIG. 1), which is in communication connection with the image processor 300. After the image processor 300 processes the image digital signal, the image is transmitted to the memory, so that when the image needs to be viewed later, the image can be found in the memory at any time and displayed on the display. In some embodiments, the image processor 300 will also compress the processed image digital signal and store it in the memory, in order to save memory space.

[0088] FIG. 1 is only a schematic structural diagram of an electronic device 1000. The size, number, and position of the camera module 200 and the image processor 300 shown in FIG. 1 are only schematic representations, which can be adjusted as needed, and the present application does not limit the same.

[0089] As shown in FIG. 2, FIG. 2 is a structural schematic diagram of the camera module 200 of the first embodiment of the present application. The camera module 200 includes an optical lens 10, a filter 20, and a photosensitive element 30. The photosensitive element 30 is located on the image side of the optical lens 10, and when the camera module 200 is working, the light rays of the object to be imaged pass through the filter 20 after passing through the optical lens 10 and form an image on the photosensitive element 30. The optical lens 10 affects the imaging quality and imaging effect, and the light rays of the object form a clear image on the imaging surface after passing through the optical lens 10, and the image of the object is recorded by the photosensitive element 30. It can be understood that the imaging element in the optical lens 10 can be the photosensitive element 30 or other imaging elements, and the present application does not limit the same. Specifically, the working principle of the camera module 200 is that the light rays reflected by the object to be imaged pass through the optical lens 10 to generate an optical image and project onto the surface of the photosensitive element 30, and the photosensitive element 30 converts the optical image into an electrical signal, i.e., an analog image signal, and transmits the converted analog image signal to the image processor 300.

[0090] The photosensitive element 30 is a kind of semiconductor chip, and the surface contains hundreds of thousands to millions of photodiodes. When exposed to light, it will generate electric charge. The photosensitive element 30 can be a charge coupled device (CCD) or a complementary metal-oxide semiconductor (CMOS). The charge coupled device is made of a high-sensitivity semiconductor material and can convert light into electric charge. The charge coupled device is composed of many photosensitive units, usually in units of millions of pixels. When the surface of the charge coupled device is exposed to light, each photosensitive unit will reflect the electric charge on the component, and the signals generated by all the photosensitive units together constitute a complete picture. The complementary metal-oxide semiconductor is mainly made of silicon and germanium, and the two elements coexist on the complementary metal-oxide semiconductor, which are N (negative) and P (positive) semiconductors. The current generated by the two complementary effects can be recorded and interpreted into an image by the image sensor.

[0091] The filter 20 is used to filter out the unnecessary waveband in the light, prevent the photosensitive element 30 from generating false colors or moire, and improve the effective resolution and color restoration. For example, the filter 20 can be an infrared filter. In the embodiment, the filter 20 is a separate component, and in other embodiments, the filter structure can be cancelled, and the filtering can be realized by surface treatment or material treatment of at least one optical element of the optical lens 10. The specific embodiments of the structure or structure for realizing the filtering are not strictly limited in the application.

[0092] Please refer to FIG. 2, FIG. 3 and FIG. 4, the camera module 200 shown in FIG. 2 is in a non-working state, FIG. 3 is a structural schematic diagram of the camera module 200 shown in FIG. 2 in a main camera state, and FIG. 4 is a structural schematic diagram of the camera module 200 shown in FIG. 2 in a wide-angle state.

[0093] In the embodiment, the optical lens 10 can include a first lens group G1, a second lens group G2, a third lens group G3 and a fourth lens group G4 arranged in sequence from the object side to the image side. The light entering the optical lens 10 passes through the first lens group G1, the second lens group G2, the third lens group G3 and the fourth lens group G4 in sequence, and forms an image on the photosensitive element 30.

[0094] The first lens group G1 can include at least one lens with negative focal power, which is beneficial to expand the field of view of the optical lens 10 at the wide-angle end and realize large field of view imaging. For example, the first lens group G1 can include a first lens L1 and a second lens L2 arranged in sequence from the object side to the image side. It can be understood that in other embodiments, the first lens group G1 can include more lenses in addition to the first lens L1 and the second lens L2, or the first lens group G1 can include one lens. The number of lenses in the first lens group G1 in the embodiment can be set as needed.

[0095] The second lens group G2 can include at least two lenses, and at least one lens in the second lens group G2 has negative focal power. The number of lenses in the second lens group G2 is at least two, which is beneficial to correct the aberration of the optical lens 10. If the number of lenses in the second lens group G2 is too small, it is difficult to correct the aberration. For example, the second lens group G2 can include a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7. The third lens L3 is the first lens of the second lens group G2, the fourth lens L4 is the second lens of the second lens group G2, the fifth lens L5 is the third lens of the second lens group G2, the sixth lens L6 is the fourth lens of the second lens group G2, and the seventh lens L7 is the fifth lens of the second lens group G2. It can be understood that in other embodiments, the second lens group G2 can include two, three or four lenses, and the application does not limit this.

[0096] The third lens group G3 can include at least one lens with negative refractive power. For example, the third lens group G3 can include an eighth lens L8. It can be understood that in other embodiments, the third lens group G3 can also include two, three, or four lenses, and the present application does not limit this.

[0097] In some embodiments, the third lens group G3 can have negative refractive power. By setting the third lens group G3 to have negative refractive power, it is beneficial to correct distortion, expand the target surface size, achieve large target surface imaging, increase the clarity of imaging, and improve imaging quality.

[0098] The fourth lens group G4 is located on the image side of the third lens group G3. For example, the fourth lens group G4 can include a ninth lens L9. It can be understood that in other embodiments, the fourth lens group G4 can also include two, three, or four lenses, and the present application does not limit this.

[0099] In some embodiments, the optical lens 10 can also not include the fourth lens group G4, which can be set as needed, and the present application does not limit this.

[0100] In some embodiments, the first lens group G1 and / or the second lens group G2 are zoom lens groups. For example, when the optical lens 10 is switched from the non-working state to the main camera end, the first lens group G1 and the second lens group G2 move together in the direction of the optical axis to the object side, the distance between the first lens group G1 and the second lens group G2 can remain unchanged, and the distance between the second lens group G2 and the third lens group G3 can increase. In other embodiments, when the optical lens 10 is switched from the non-working state to the main camera end, the second lens group G2 can move in the direction of the optical axis to the object side.

[0101] In the embodiments of the present application, the first lens group G1 and / or the second lens group G2 are moved to switch the optical lens 10 between the non-working state, the main camera end, and the wide-angle end. It can be understood that the optical lens 10 can be switched from the non-working state to the main camera end, or from the non-working state to the wide-angle end, or from the main camera end to the wide-angle end, or from the main camera end to the non-working state, or from the wide-angle end to the non-working state, or from the wide-angle end to the main camera end, and then to the non-working state. Specifically, the first lens group G1 and the second lens group G2 can be adjusted to a predetermined position as needed. The embodiments of the present application can integrate the main camera and the wide-angle lens, save space in the electronic device, and improve the user experience.

[0102] In some embodiments, the optical lens 10 of the present application can satisfy the following relationship: 0.1≤fw / ImgH≤1.1, where fw is the focal length of the optical lens 10 at the wide-angle end, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface of the optical lens 10. For example, the value of fw / ImgH can be 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, or 1.0, etc. By setting 0.1≤fw / ImgH≤1.1 in the embodiments of the present application, the optical lens 10 can achieve a large field of view and large target surface imaging at the wide-angle end, which is beneficial to increase the clarity of imaging, has high image quality, and improves the imaging quality. The value of fw can be greater than or equal to 3.000 mm and less than or equal to 7.360 mm.

[0103] By setting the first lens group G1 and the second lens group G2 as zoom lens groups, and the focal power and the number of lenses in the first lens group G1, the focal power and the number of lenses in the second lens group G2, the focal power and the number of lenses in the third lens group G3, and limiting 0.1≤fw / ImgH≤1.1 in the embodiments of the present application, the optical lens 10 can realize the integration of the main camera lens and the wide-angle lens, save the space occupied by the optical lens in the electronic device, and realize the switching of the non-working state, the main camera, and the wide-angle through the movement of the first lens group G1 and the second lens group G2, which has good zoom effect and effectively improves the user experience. The optical lens 10 of the embodiments of the present application has a larger field of view at the wide-angle end, can realize large field of view imaging, can effectively correct the aberration and distortion of the optical lens 10, and has good imaging quality at the main camera end and the wide-angle end.

[0104] In some embodiments, the first lens group G1 has negative focal power. The first lens group G1 having negative focal power in the embodiments of the present application can expand the field of view of the optical lens 10 at the wide-angle end, realize large field of view imaging of the optical lens 10, and meet the diverse use requirements of users.

[0105] In some embodiments, the second lens group G2 has positive focal power. The second lens group G2 having positive focal power in the embodiments of the present application is beneficial to improve the imaging quality of the optical lens 10 at the main camera end, and is also beneficial to realize the miniaturization of the optical lens 10.

[0106] In some embodiments, the first lens of the second lens group G2 has positive focal power. The first lens of the second lens group G2 having positive focal power in the embodiments of the present application is beneficial to improve the imaging quality of the optical lens 10 at the main camera end. It can be understood that the first lens of the second lens group G2 is the lens closest to the object side in the second lens group G2.

[0107] In some embodiments, the third lens of the second lens group G2 has negative refractive power, and is located on the image side of the second lens of the second lens group G2. The third lens of the second lens group G2 has negative refractive power, which is beneficial to improve the imaging quality of the optical lens 10 at the wide-angle end and the telephoto end.

[0108] In some embodiments, the third lens group G3 is a zoom lens group. When the third lens group G3 is a zoom lens group, the focal length range of the optical lens 10 can be further increased. The embodiments of the present application set the working mode of the third lens group G3, which is beneficial to the miniaturization of the optical lens 10 and a larger zoom ratio.

[0109] In some embodiments, the third lens group is a fixed lens group. When the third lens group is a fixed lens group, the structure of the optical lens is simple, which is beneficial to engineering.

[0110] In some embodiments, the fourth lens group G4 is a fixed lens group or a zoom lens group. When the fourth lens group G4 is a fixed lens group, the structure of the optical lens 10 is simple, which is beneficial to engineering. When the fourth lens group G4 is a zoom lens group, the focal length range of the optical lens 10 can be further increased.

[0111] In some embodiments, the lens closest to the image side in the optical lens 10 has negative refractive power. The embodiments of the present application set the lens closest to the image side in the optical lens 10 to have negative refractive power, which is beneficial to correct distortion and improve the imaging quality of the optical lens 10.

[0112] In some embodiments, the optical lens 10 satisfies the following relationship: 0.05 < H11 / TTL01 < 0.7, H11 is the pop-up height of the optical lens 10 from the non-working state to the telephoto end, and TTL01 is the distance from the object side of the first lens L1 of the first lens group G1 to the image plane on the optical axis when the optical lens 10 is at the telephoto end. Exemplarily, the value of H11 / TTL01 can be 0.1, 0.2, 0.3, 0.4, 0.5 or 0.6, etc. The value of H11 can be greater than or equal to 0.5967 mm and less than or equal to 8.734368 mm, and the value of TTL01 can be greater than or equal to 6.630 mm and less than or equal to 19.672 mm.

[0113] The embodiments of the present application set 0.05 < H11 / TTL01 < 0.7, so that the pop-up stroke of the optical lens 10 switching to the telephoto end is small, which requires small power for the motor, reduces the volume of the motor for driving the movement of the lens group, and the total optical length of the optical lens 10 is small, which is beneficial to the miniaturization design of the optical lens 10.

[0114] In some embodiments, the optical lens 10 satisfies the following relationship: 0.05 < H22 / TTL02≤0.7, H22 is the height of the optical lens 10 from the non-working state to the pop-out of the wide-angle end, and TTL02 is the distance from the object side of the first lens L1 of the first lens group G1 to the imaging surface on the optical axis when the optical lens 10 is at the wide-angle end. For example, the value of H22 / TTL02 can be 0.1, 0.2, 0.3, 0.4, 0.5, or 0.6, etc. The value of H22 can be greater than or equal to 2.1364 mm and less than or equal to 4.82976 mm, and the value of TTL02 can be greater than or equal to 9.189 mm and less than or equal to 23.220 mm.

[0115] The embodiments of the present application set 0.05 < H22 / TTL02≤0.7, so that the pop-out stroke of the optical lens 10 switching to the wide-angle end is small, which requires less power for the motor, reduces the volume of the motor for driving the lens group to move, and the total optical length of the optical lens 10 is small, which is easy to realize the miniaturization design of the optical lens 10.

[0116] In some embodiments, the optical lens 10 satisfies the following relationship: TTL01 / TTL02≤0.9, TTL01 is the distance from the object side of the first lens of the first lens group to the imaging surface on the optical axis when the optical lens is at the main camera end, and TTL02 is the distance from the object side of the first lens of the first lens group to the imaging surface on the optical axis when the optical lens is at the wide-angle end. For example, the value of TTL01 / TTL02 can be 0.9, 0.8, 0.7, 0.6, 0.5, 0.4, 0.3, 0.2, or 0.1, etc.

[0117] The embodiments of the present application set TTL01 / TTL02≤0.9, which is conducive to protecting the size ratio of the overall optical lens 10, realizing the miniaturization of the overall optical lens 10, and avoiding the optical lens 10 from occupying too much space of the electronic device 1000.

[0118] In some embodiments, the optical lens 10 satisfies the following relationship: 1.4≤n21≤1.9, n21 is the refractive index of the first lens of the second lens group G2. For example, the value of the refractive index n21 of the first lens of the second lens group G2 of the optical lens 10 can be 1.5, 1.6, 1.7, or 1.8, etc. The embodiments of the present application set the refractive index n21 of the first lens of the second lens group to be greater than or equal to 1.4 and less than or equal to 1.9, which is conducive to reducing the total optical length of the optical lens 10, realizing the miniaturization design of the optical lens 10, and improving the imaging quality of the optical lens 10 at the main camera end.

[0119] In some embodiments, the optical lens 10 satisfies the following relationship: 0.1 < |Fno1 / Fno2| ≤ 1, Fno1 is the F-number of the optical lens at the prime end, and Fno2 is the F-number of the optical lens at the wide-angle end. Illustratively, the value of |Fno1 / Fno2| can be 0.9, 0.8, 0.7, 0.6, 0.5, 0.4, 0.3, or 0.2, etc. The value of Fno1 can be greater than or equal to 1.4 and less than or equal to 1.86, and the value range of Fno2 can be greater than or equal to 2.3 and less than or equal to 2.75.

[0120] The embodiments of the present application set 0.1 < |Fno1 / Fno2| ≤ 1, which is conducive to improving the light intake of the optical lens 10 at the prime end and the light intake of the optical lens 10 at the wide-angle end, and improving the imaging quality of the optical lens 10.

[0121] In some embodiments, the optical lens 10 satisfies the following relationship: 1 < fm / fw ≤ 2.0, fm is the effective focal length of the optical lens at the prime end. Illustratively, the ratio of the effective focal length fm of the optical lens 10 at the prime end to the effective focal length fw of the optical lens 10 at the wide-angle end can be 1.9, 1.8, 1.7, 1.6, 1.5, 1.4, 1.3, 1.2, or 1.1, etc. The value of fm can be greater than or equal to 4.760 mm and less than or equal to 9.600 mm.

[0122] The embodiments of the present application set the ratio of the effective focal length fm of the optical lens 10 at the prime end to the effective focal length fw of the optical lens 10 at the wide-angle end to be greater than 1 and less than or equal to 2, which can protect the zoom ratio of the optical lens 10, so that the optical lens 10 has a larger zoom ratio.

[0123] In some embodiments, the optical lens 10 satisfies the following relationship: 0 ≤ |f21 / fn| ≤ 100, f21 is the focal length of the first lens of the second lens group G2, and fn is the focal length of the lens closest to the image side of the optical lens 10. Taking the optical lens 10 shown in FIGS. 2 to 4 as an example, the lens closest to the image side of the optical lens 10 is the ninth lens L9. Understandably, in other embodiments, the lens closest to the image side of the optical lens 10 can also be the eighth lens or the tenth lens, etc. Illustratively, the absolute value of the ratio of the focal length f21 of the first lens of the second lens group G2 to the focal length fn of the lens closest to the image side of the optical lens 10 can be 10, 20, 30, 40, 50, 60, 70, 80, or 90, etc. The value of f21 can be greater than or equal to 5.514 mm and less than or equal to 443.000 mm, and the value of fn can be greater than or equal to -10.084 mm and less than or equal to -4.650 mm.

[0124] The absolute value of the ratio of the focal length f3 of the third lens of the optical lens 10 to the focal length fn of the lens closest to the image side of the optical lens 10 is greater than or equal to 0 and less than or equal to 100, which is beneficial to improve the modulation transfer function performance of the optical lens 10 at the prime and wide-angle ends, and improve the imaging quality of the optical lens 10.

[0125] In some embodiments, the material of the lenses in the optical lens 10 can be glass, which is beneficial to improve the imaging quality, reduce the chromatic aberration and temperature drift effect of the optical lens 10, and avoid the influence of temperature change on the focal length of the optical lens 10. In some embodiments, the material of the lenses in the optical lens 10 can be plastic, which can reduce the weight and cost of the optical lens 10. It can be understood that the optical lens 10 can also have both glass lenses and plastic lenses, and the glass lenses are beneficial to improve the imaging quality, reduce the chromatic aberration and temperature drift effect, and the plastic lenses can reduce the weight and cost of the optical lens 10.

[0126] In some embodiments, the object side or image side of the lenses in the optical lens 10 can be spherical or aspherical, which is not limited in the embodiments of the present application and can be set as needed.

[0127] In a possible implementation, the optical lens includes a variable aperture, and the opening size of the variable aperture decreases in the focusing process of switching the optical lens from the prime end to the wide-angle end. When the prime end is used, the variable aperture can be adjusted to increase the aperture size, the depth of field is shallow, and the blurring effect is good, which is beneficial to the shooting at the prime end. When the wide-angle end is used, in order to improve the shooting clarity, the blurring effect is not suitable, and therefore the variable aperture needs to be adjusted to be small to improve the shooting quality at the wide-angle end.

[0128] In some embodiments, when the object side and / or image side of some lenses in the optical lens 10 is aspherical, the object side and / or image side of some lenses can be defined by, but not limited to, the following aspherical formula:

[0129] wherein z(x, y) is the optical surface sag; k is the conic coefficient; c is the curvature radius; r is the radius height in the optical axis direction; r 2 = x 2 +y 2 ; ai is the polynomial coefficient; and ri is the normalized radial coordinate.

[0130] Some specific but non-limiting examples of the present application will be described in more detail below by six embodiments in combination with FIGS. 2-31.

[0131] First Embodiment

[0132] Please refer to FIG. 2, FIG. 3 and FIG. 4, in the embodiment of the present application, the camera module 200 includes an optical lens 10, a filter 20 and a photosensitive element 30. Light rays pass through the optical lens 10, the filter 20 and then reach the photosensitive element 30 to form an image. The optical lens 10 can include a first lens group G1, a second lens group G2, a third lens group G3 and a fourth lens group G4 arranged along the optical axis in sequence.

[0133] The first lens group G1 can have a negative focal power. The first lens group G1 can include a first lens L1 and a second lens L2 arranged along the object side to the image side in sequence.

[0134] The second lens group G2 can have a positive focal power. The second lens group G2 can include a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7 arranged along the object side to the image side in sequence. The third lens L3 has a positive focal power.

[0135] The third lens group G3 can have a negative focal power. The third lens group G3 can include an eighth lens L8. The eighth lens L8 has a positive focal power.

[0136] The fourth lens group G4 can have a negative focal power. The fourth lens group G4 can include a ninth lens L9. The ninth lens L9 has a negative focal power.

[0137] In some embodiments, the materials of the first lens L1 and the third lens L3 can be glass, and the materials of the second lens L2, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, the eighth lens L8 and the ninth lens L9 can be plastic. The glass material of the lens is beneficial to reduce the temperature drift coefficient of the optical lens 10, reduce the temperature drift effect and improve the imaging quality of the optical lens 10. The plastic material of the lens is beneficial to realize the lightweight design of the optical lens 10.

[0138] In the embodiment, when the camera module 200 is switched from the non-working state to the main camera state, the first lens group G1 and the second lens group G2 move along the optical axis to the object side direction, and the distance between the first lens group G1 and the second lens group G2 can remain unchanged. When the camera module 200 is switched from the main camera state to the non-working state, the first lens group G1 and the second lens group G2 move along the optical axis to the image side direction, so that the overall size of the camera module 200 is relatively low, and does not cause the protrusion of the corresponding part of the electronic device 1000.

[0139] In the embodiment, when the camera module 200 is switched from the main camera state to the wide-angle state, the first lens group G1 can move along the optical axis to the object side direction, and the second lens group G2 can move along the optical axis to the image side direction to realize focusing.

[0140] It can be understood that the camera module 200 in the embodiment of the present application can perform large target surface imaging at the main camera end, and the camera module 200 can also achieve equivalent large target surface imaging at the wide-angle end.

[0141] It can be understood that the third mirror group G3 in the embodiment of the present application can be a zoom mirror group, and the fourth mirror group G4 can be a fixed mirror group. When the camera module 200 is switched from the main camera state to the wide-angle state, the third mirror group G3 can move in the object side direction along the optical axis, and the fourth mirror group G4 is stationary.

[0142] In some embodiments, the camera module 200 includes a stop 40, which can be located between the first mirror group G1 and the second mirror group G2, or can be located at other positions, and the position of the stop is not limited in the embodiment of the present application. When the camera module 200 is switched from the main camera state to the wide-angle state, the size of the stop 40 can be reduced.

[0143] Referring to Table 1a, Table 1a is the radius of curvature, thickness and air gap, refractive index, Abbe number, normalized radius and conic constant of each lens and filter 30 of the optical lens 10 in the first embodiment at the main camera end and the wide-angle end. The Abbe number is also the dispersion coefficient. BK7 represents glass.

[0144] Table 1a

[0145] Please refer to Table 1b, Table 1b is the asphericity coefficient of each lens in the camera module 200 shown in the first embodiment in a possible embodiment.

[0146] Table 1b

[0147] In the present embodiment, the asphericity of the optical lens 10 in Table 1b can be defined by, but not limited to, the following asphericity formula:

[0148] Wherein, z is the relative distance of a point on the asphericity surface with a distance of r from the optical axis to the tangent plane at the intersection point on the optical axis; r is the vertical distance of a point on the asphericity curve to the optical axis; c is the curvature; k is the conic coefficient; a i is the asphericity coefficient of the i-th order.

[0149] Please refer to Table 1c, Table 1c is the basic parameters of the camera module 200 shown in the first embodiment in a possible embodiment. In Table 1c, Fno is the aperture number of the optical lens 10, 1.6 is the aperture number of the optical lens at the main camera end, 2.3 is the aperture number of the optical lens at the wide-angle end, TTL 非TTL of the optical lens 10 in the non-working state, FOV is the field of view angle of the optical lens 10, f3 is the focal length of the third lens L3, and f9 is the focal length of the ninth lens L9.

[0150] Table 1c

[0151] Please refer to FIG. 5 and FIG. 6, FIG. 5 is an MTF diagram of the camera module 200 in the primary camera state according to the first embodiment, and FIG. 6 is an MTF diagram of the camera module 200 in the wide-angle state according to the first embodiment. S represents the sagittal direction, and T represents the tangential direction. The MTF diagram can be used to measure the ability of the optical lens to transfer contrast from the object to the image, and the abscissa is the real image height, and the ordinate is the MTF value. The larger the MTF value at different image heights, the better the contrast and resolution, and the optical system can reproduce the details in the image, and the imaging quality is better. As can be seen from FIG. 5, the camera module 200 according to the first embodiment has good imaging quality in the primary camera state, and as can be seen from FIG. 6, the camera module 200 according to the first embodiment has good imaging quality in the wide-angle state.

[0152] The camera module 200 provided by the application has a value of 0.76 for fw / ImgH, a field of view angle FOV of the optical lens 10 ranging from 78° to 107°, a TTL of 12.08mm for the optical lens 10 in the non-working state, a TTL of 17.300mm at the primary camera end, and a TTL of 21.300mm at the wide-angle end. The optical lens 10 according to the embodiment of the application has a large field of view angle at the wide-angle end, can realize large field of view angle imaging, can effectively correct aberration and distortion of the optical lens 10, has good imaging quality at the primary camera end and the wide-angle end, and has the characteristics of miniaturization.

[0153] Second embodiment

[0154] Please refer to FIG. 7, FIG. 8 and FIG. 9, FIG. 7 is a structural schematic diagram of the camera module 200 according to the second embodiment of the application, the camera module 200 shown in FIG. 7 is in the non-working state, FIG. 8 is a structural schematic diagram of the camera module 200 shown in FIG. 7 in the primary camera state, and FIG. 9 is a structural schematic diagram of the camera module 200 shown in FIG. 7 in the wide-angle state.

[0155] In the embodiment of the application, the camera module 200 includes an optical lens 10, a filter 20 and a photosensitive element 30. Light passes through the optical lens 10, the filter 20 and then reaches the photosensitive element 30 to form an image. The optical lens 10 can include a first lens group G1, a second lens group G2 and a third lens group G3 arranged along the optical axis in sequence.

[0156] The first lens group G1 can have negative refractive power, and can include a first lens L1 and a second lens L2 arranged in order from the object side to the image side.

[0157] The second lens group G2 can have positive refractive power, and can include a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7 arranged in order from the object side to the image side. The third lens L3 has positive refractive power.

[0158] The third lens group G3 can have negative refractive power, and can include an eighth lens L8 and a ninth lens L9. The ninth lens L9 has negative refractive power.

[0159] In some embodiments, the first lens L1, the third lens L3, and the sixth lens L6 can be made of glass, and the second lens L2, the fourth lens L4, the fifth lens L5, the seventh lens L7, the eighth lens L8, and the ninth lens L9 can be made of plastic. The lenses made of glass are beneficial to reduce the temperature drift coefficient of the optical lens 10, reduce the temperature drift effect, and improve the imaging quality of the optical lens 10. The lenses made of plastic are beneficial to realize the lightweight design of the optical lens 10.

[0160] In the embodiment, when the camera module 200 is switched from the non-working state to the main camera state, the first lens group G1 and the second lens group G2 move in the object side direction along the optical axis, and the distance between the first lens group G1 and the second lens group G2 can remain unchanged. When the camera module 200 is switched from the main camera state to the non-working state, the first lens group G1 and the second lens group G2 move in the image side direction along the optical axis, so that the overall size of the camera module 200 is relatively low, and does not cause the corresponding part of the electronic device 1000 to be protruding.

[0161] In the embodiment, when the camera module 200 is switched from the main camera state to the wide-angle state, the first lens group G1 can move in the object side direction along the optical axis, and the second lens group G2 can move in the image side direction along the optical axis to realize focusing.

[0162] It can be understood that the camera module 200 in the embodiment of the present application can perform large target surface imaging at the main camera end, and the camera module 200 can also realize equivalent large target surface imaging at the wide-angle end.

[0163] It can be understood that the third lens group G3 in the embodiment of the present application can be a fixed lens group. When the camera module 200 is switched from the main camera state to the wide-angle state, the third lens group G3 can remain stationary.

[0164] In some embodiments, the camera module 200 includes a diaphragm 40, which can be located between the first lens group G1 and the second lens group G2, or can be located at other positions, and the position of the diaphragm is not limited in the embodiments of the present application. When the camera module 200 is switched from the main camera state to the wide-angle state, the size of the diaphragm 40 can be reduced.

[0165] Referring to Table 2a, Table 2a is the radius of curvature, thickness and air gap, refractive index, Abbe number, normalized radius and conic constant of each lens and filter 30 of the optical lens 10 in the first embodiment at the main camera end and the wide-angle end. The Abbe number is also the dispersion coefficient. BK7 represents glass.

[0166] Table 2a

[0167] Referring to Table 2b, Table 2b is the aspheric coefficients of each lens in a possible embodiment of the camera module 200 shown in the second embodiment.

[0168] Table 2b

[0169] In the present embodiment, the aspheric surface of the optical lens 10 in Table 2b can be defined by, but not limited to, the following aspheric formula:

[0170] Wherein z is the relative distance of the point on the aspheric surface with a distance of r from the optical axis to the tangent plane at the intersection point on the optical axis of the aspheric surface; r is the vertical distance of the point on the aspheric curve to the optical axis; c is the curvature; k is the conic coefficient; a i is the i-th order aspheric coefficient.

[0171] Referring to Table 2c, Table 2c is the basic parameters of the camera module 200 shown in the second embodiment in a possible embodiment. In Table 2c, Fno is the aperture number of the optical lens 10, 1.4 is the aperture number of the optical lens at the main camera end, 2.3 is the aperture number of the optical lens at the wide-angle end, TTL 非 is the TTL of the optical lens 10 in the non-working state, FOV is the field of view angle of the optical lens 10, f3 is the focal length of the third lens L3, and f9 is the focal length of the ninth lens L9.

[0172] Table 2c

[0173] Referring to FIG. 10 and FIG. 11, FIG. 10 is an MTF diagram of the camera module 200 in the primary camera state according to the second embodiment, and FIG. 11 is an MTF diagram of the camera module 200 in the wide-angle state according to the second embodiment. S represents the sagittal direction, and T represents the tangential direction. The MTF diagram can be used to measure the ability of the optical lens to transfer contrast from the object to the image, and the abscissa is the real image height, and the ordinate is the MTF value. The larger the MTF value at different image heights, the better the contrast and resolution, and the optical system can reproduce the details in the image, and the imaging quality is better. As can be seen from FIG. 10, the camera module 200 according to the second embodiment has good imaging quality in the primary camera state, and as can be seen from FIG. 11, the camera module 200 according to the second embodiment has good imaging quality in the wide-angle state.

[0174] The camera module 200 provided by the application has a value of 0.92 for fw / ImgH, the optical lens 10 has a field of view FOV ranging from 78° to 100°, the TTL of the optical lens 10 in the non-working state is 11.356mm, the TTL of the primary camera end is 15.680mm, and the TTL of the wide-angle end is 18.900mm. The optical lens 10 according to the embodiment has a large field of view at the wide-angle end, can realize large field of view imaging, can effectively correct the aberration and distortion of the optical lens 10, has good imaging quality at the primary camera end and the wide-angle end, and has the characteristics of miniaturization.

[0175] Third Embodiment

[0176] Referring to FIG. 12, FIG. 13 and FIG. 14, FIG. 12 is a structural schematic diagram of the camera module 200 according to the third embodiment of the application, the camera module 200 shown in FIG. 12 is in a non-working state, FIG. 13 is a structural schematic diagram of the camera module 200 shown in FIG. 12 in the primary camera state, and FIG. 14 is a structural schematic diagram of the camera module 200 shown in FIG. 12 in the wide-angle state.

[0177] In the embodiment of the application, the camera module 200 includes an optical lens 10, a filter 20 and a photosensitive element 30. Light passes through the optical lens 10, the filter 20 and then reaches the photosensitive element 30 to form an image. The optical lens 10 can include a first lens group G1, a second lens group G2 and a third lens group G3 arranged along the optical axis in sequence.

[0178] The first lens group G1 can have a negative focal power, and the first lens group G1 can include a first lens L1 and a second lens L2 arranged along the object side to the image side in sequence.

[0179] The second lens group G2 can have positive refractive power, and the second lens group G2 can include, in order from the object side to the image side, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The third lens L3 has positive refractive power.

[0180] The third lens group G3 can have negative refractive power, and the third lens group G3 can include a ninth lens L9 and a tenth lens L10. The tenth lens L10 has negative refractive power.

[0181] In some embodiments, the material of the third lens L3 can be glass, and the materials of the first lens L1, the second lens L2, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, the eighth lens L8, the ninth lens L9, and the tenth lens L10 can be plastic. The glass material of the lens is beneficial to reduce the temperature drift coefficient of the optical lens 10, reduce the temperature drift effect, and improve the imaging quality of the optical lens 10. The plastic material of the lens is beneficial to realize the lightweight design of the optical lens 10.

[0182] In the embodiment, when the camera module 200 is switched from the non-working state to the main camera state, the first lens group G1 and the second lens group G2 move in the object side direction along the optical axis, and the distance between the first lens group G1 and the second lens group G2 can remain unchanged. When the camera module 200 is switched from the main camera state to the non-working state, the first lens group G1 and the second lens group G2 move in the image side direction along the optical axis, so that the overall size of the camera module 200 is relatively low, and does not cause the corresponding part of the electronic device 1000 to be protruding.

[0183] In the embodiment, when the camera module 200 is switched from the main camera state to the wide-angle state, the first lens group G1 can move in the object side direction along the optical axis, and the second lens group G2 can move in the image side direction along the optical axis to realize focusing.

[0184] It can be understood that the camera module 200 in the embodiment of the present application can perform large target surface imaging at the main camera end, and the camera module 200 can also realize equivalent large target surface imaging at the wide-angle end.

[0185] It can be understood that the third lens group G3 in the embodiment of the present application can be a fixed lens group. When the camera module 200 is switched from the main camera state to the wide-angle state, the third lens group G3 can be stationary.

[0186] In some embodiments, the camera module 200 includes a diaphragm 40, which can be located between the first lens group G1 and the second lens group G2, or can be located at other positions. The position of the diaphragm is not limited in the embodiment of the present application.

[0187] Referring to Table 3a, Table 3a is the radius of curvature, thickness and air gap, refractive index, Abbe number, normalized radius and conic constant of each lens and filter 30 of the optical lens 10 in the third embodiment at the prime and wide-angle ends. The Abbe number is also the dispersion coefficient. BK7 represents glass.

[0188] Table 3a

[0189] Referring to Table 3b, Table 3b is the aspherical coefficients of each lens of the camera module 200 in the third embodiment in a possible embodiment.

[0190] Table 3b

[0191] In this embodiment, the aspheres of the optical lens 10 in Table 3b can be defined using, but not limited to, the following aspherical equation:

[0192] Where z is the relative distance of a point on the asphere with a distance r from the optical axis to the tangent plane at the intersection of the asphere and the optical axis; r is the perpendicular distance of a point on the aspheric curve to the optical axis; c is the curvature; k is the conic coefficient; a i is the i-th order aspherical coefficient.

[0193] Referring to Table 3c, Table 3c is the basic parameters of the camera module 200 in the third embodiment in a possible embodiment. In Table 3c, Fno is the aperture number of the optical lens 10, 1.6 is the aperture number of the optical lens at the prime end, 2.4 is the aperture number of the optical lens at the wide-angle end, TTL 非 is the TTL of the optical lens 10 in the non-working state, FOV is the field of view angle of the optical lens 10, f3 is the focal length of the third lens L3, and f10 is the focal length of the tenth lens L10.

[0194] Table 3c

[0195] Referring to FIG. 15 and FIG. 16, FIG. 15 is an MTF diagram of the camera module 200 in the third embodiment in a main camera state, and FIG. 16 is an MTF diagram of the camera module 200 in the third embodiment in a wide-angle state. S represents the tangential direction, and T represents the sagittal direction. The MTF diagram can be used to measure the ability of the optical lens to transfer contrast from the object to the image, and the abscissa is the real image height, and the ordinate is the MTF value. The larger the MTF value at different image heights, the better the contrast and resolution, and the optical system can reproduce the details in the image, and the imaging quality is better. As can be seen from FIG. 15, the camera module 200 in the third embodiment has good imaging quality in the main camera state, and as can be seen from FIG. 16, the camera module 200 in the third embodiment has good imaging quality in the wide-angle state.

[0196] The camera module 200 provided in the present application has a value of 0.8125 for fw / ImgH, the field of view FOV of the optical lens 10 ranges from 83° to 107°, the TTL of the optical lens 10 in a non-working state is 13.600mm, the TTL of the main camera end is 18.000mm, and the TTL of the wide-angle end is 21.700mm. The optical lens 10 in the embodiment has a large field of view at the wide-angle end, can realize large field of view imaging, can effectively correct the aberration and distortion of the optical lens 10, has good imaging quality at the main camera end and the wide-angle end, and has the characteristics of miniaturization.

[0197] Fourth Embodiment

[0198] Referring to FIG. 17, FIG. 18 and FIG. 19, FIG. 17 is a structural schematic diagram of the camera module 200 in the fourth embodiment of the present application, the camera module 200 shown in FIG. 17 is in a non-working state, FIG. 18 is a structural schematic diagram of the camera module 200 shown in FIG. 17 in a main camera state, and FIG. 19 is a structural schematic diagram of the camera module 200 shown in FIG. 17 in a wide-angle state.

[0199] In the embodiment, the camera module 200 can include an optical lens 10, a filter (not shown in FIGS. 17 to 19), and a photosensitive element 30. Light passes through the optical lens 10, the filter, and then the photosensitive element 30 to form an image. The optical lens 10 can include a first lens group G1, a second lens group G2, and a third lens group G3 arranged in sequence along the optical axis.

[0200] The first lens group G1 can have a negative focal power, and the first lens group G1 can include a first lens L1 arranged in sequence from the object side to the image side. The first lens L1 has a negative focal power.

[0201] The second lens group G2 can have positive refractive power. The second lens group G2 can include, in order from the object side to the image side, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. The second lens L2 has positive refractive power.

[0202] The third lens group G3 can have negative refractive power. The third lens group G3 can include an eighth lens L8 and a ninth lens L9. The ninth lens L9 has negative refractive power.

[0203] In some embodiments, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, the eighth lens L8, and the ninth lens L9 can all be made of plastic. The lenses made of plastic are conducive to the lightweight design of the optical lens 10.

[0204] In the embodiment, when the camera module 200 is switched from the non-working state to the main camera state, the first lens group G1 and the second lens group G2 move in the object side direction along the optical axis, and the distance between the first lens group G1 and the second lens group G2 can remain unchanged. When the camera module 200 is switched from the main camera state to the non-working state, the first lens group G1 and the second lens group G2 move in the image side direction along the optical axis, so that the overall size of the camera module 200 is relatively low, and does not cause the corresponding part of the electronic device 1000 to protrude.

[0205] In the embodiment, when the camera module 200 is switched from the main camera state to the wide-angle state, the first lens group G1 can move in the object side direction along the optical axis, and the second lens group G2 can move in the image side direction along the optical axis to achieve focusing.

[0206] It can be understood that the camera module 200 in the embodiment of the present application can perform large target surface imaging at the main camera end, and the camera module 200 can also achieve equivalent large target surface imaging at the wide-angle end.

[0207] It can be understood that the third lens group G3 in the embodiment of the present application can be a fixed lens group. When the camera module 200 is switched from the main camera state to the wide-angle state, the third lens group G3 can remain stationary.

[0208] In some embodiments, the camera module 200 includes a diaphragm 40, which can be located between the first lens group G1 and the second lens group G2. The diaphragm 40 can also be located at other positions, and the position of the diaphragm is not limited in the embodiment of the present application.

[0209] Referring to Table 4a, Table 4a is the radius of curvature, the thickness and the air gap, the refractive index, the Abbe number, the normalized radius, and the conic constant of each lens and the filter 30 of the optical lens 10 in the main camera end and the wide-angle end in the fourth embodiment. The Abbe number is also the dispersion coefficient.

[0210] Table 4a

[0211] Table 4b is the aspherical coefficients of each lens of the camera module 200 shown in the fourth embodiment in a possible embodiment.

[0212] Table 4b

[0213] In this embodiment, the aspherical surface of the optical lens 10 in Table 4b can be defined by, but not limited to, the following aspherical formula:

[0214] Wherein z is the relative distance of the point on the aspherical surface with a distance r from the optical axis to the tangent plane at the intersection point of the optical axis; r is the vertical distance of the point on the aspherical curve to the optical axis; c is the curvature; k is the conical coefficient; a i is the i-th order aspherical coefficient.

[0215] Table 4c is the basic parameters of the camera module 200 shown in the fourth embodiment in a possible embodiment. In Table 4c, Fno is the aperture number of the optical lens 10, 1.86 is the aperture number of the optical lens at the main camera end, 2.75 is the aperture number of the optical lens at the wide-angle end, TTL 非 is the TTL of the optical lens 10 in the non-working state, FOV is the field of view of the optical lens 10, f2 is the focal length of the second lens L2, and f9 is the focal length of the ninth lens L9.

[0216] Table 4c

[0217] Referring to FIGS. 20 and 21, FIG. 20 is an MTF diagram of the camera module 200 shown in the fourth embodiment in the main camera state, and FIG. 21 is an MTF diagram of the camera module 200 shown in the fourth embodiment in the wide-angle state. S represents the sagittal direction, and T represents the meridional direction. The MTF diagram can be used to measure the ability of the optical lens to transfer contrast from the object to the image, and the abscissa is the real image height, and the ordinate is the MTF value. The larger the MTF value at different image heights, the better the contrast and resolution, and the optical system can reproduce the details in the image, and the imaging quality is better. As can be seen from FIG. 20, the camera module 200 shown in the fourth embodiment of the present application has good imaging quality in the main camera state, and as can be seen from FIG. 21, the camera module 200 shown in the fourth embodiment of the present application has good imaging quality in the wide-angle state.

[0218] The camera module 200 provided in the application has a value of 0.375 of fw / ImgH, a field of view FOV of the optical lens 10 ranges from 56° to 83°, a TTL of the optical lens 10 in a non-working state is 6.000 mm, a TTL of the main camera end is 6.630 mm, and a TTL of the wide-angle end is 9.189 mm. The optical lens 10 in the embodiment of the application has a large field of view at the wide-angle end, can realize large field of view imaging, can effectively correct aberration and distortion of the optical lens 10, has good imaging quality at the main camera end and the wide-angle end, and has the characteristics of miniaturization.

[0219] Fifth embodiment

[0220] Please refer to FIG. 22, FIG. 23 and FIG. 24, FIG. 22 is a structural schematic diagram of the camera module 200 in the fifth embodiment of the application, the camera module 200 shown in FIG. 22 is in a non-working state, FIG. 23 is a structural schematic diagram of the camera module 200 shown in FIG. 22 in a main camera state, and FIG. 24 is a structural schematic diagram of the camera module 200 shown in FIG. 22 in a wide-angle state.

[0221] In the embodiment of the application, the camera module 200 includes the optical lens 10, the optical filter 20 and the photosensitive element 30. Light rays pass through the optical lens 10 and the optical filter 20 in sequence and then form an image on the photosensitive element 30. The optical lens 10 can include the first lens group G1, the second lens group G2, the third lens group G3 and the fourth lens group G4 arranged along the optical axis in sequence.

[0222] The first lens group G1 can have negative refractive power, and the first lens group G1 can include the first lens L1 arranged along the object side to the image side in sequence. The first lens L1 has negative refractive power.

[0223] The second lens group G2 can have positive refractive power, and the second lens group G2 can include the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6 and the seventh lens L7 arranged along the object side to the image side in sequence. The second lens L2 has positive refractive power.

[0224] The third lens group G3 can have negative refractive power, and the third lens group G3 can include the eighth lens L8.

[0225] The fourth lens group G4 can include the ninth lens L9, and the ninth lens L9 has negative refractive power.

[0226] In some embodiments, the materials of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7 and the ninth lens L9 can all be plastic, and the material of the eighth lens L8 can be glass. The lens made of plastic material is conducive to realizing the lightweight design of the optical lens 10.

[0227] In the embodiment, when the camera module 200 is switched from the non-working state to the main camera state, the first lens group G1 and the second lens group G2 move in the optical axis direction to the object side, and the distance between the first lens group G1 and the second lens group G2 can remain unchanged; when the camera module 200 is switched from the main camera state to the non-working state, the first lens group G1 and the second lens group G2 move in the optical axis direction to the image side, so that the overall size of the camera module 200 is relatively low, and does not cause the corresponding part of the electronic device 1000 to be convex.

[0228] In the embodiment, when the camera module 200 is switched from the main camera state to the wide-angle state, the first lens group G1 can move in the optical axis direction to the object side, and the second lens group G2 can move in the optical axis direction to the image side to achieve focusing.

[0229] It can be understood that the camera module 200 in the embodiment of the application can perform large target surface imaging at the main camera end, and the camera module 200 can also achieve equivalent large target surface imaging at the wide-angle end.

[0230] It can be understood that the third mirror group G3 in the embodiment of the application can be a zoom mirror group, and the fourth mirror group G4 can be a fixed mirror group. When the camera module 200 is switched from the main camera state to the wide-angle state, the third mirror group G3 can move in the optical axis direction to the object side, and the fourth mirror group G4 can remain unchanged.

[0231] In some embodiments, the camera module 200 includes a diaphragm 40, which can be located between the first mirror group G1 and the second mirror group G2, or can be located at other positions, and the position of the diaphragm is not limited in the embodiment of the application.

[0232] Referring to Table 5a, Table 5a is the radius of curvature, thickness and air gap, refractive index, Abbe number, normalized radius and conic constant of each lens and filter 30 of the optical lens 10 in the fifth embodiment at the main camera end and the wide-angle end. The Abbe number is also the dispersion coefficient.

[0233] Table 5a

[0234] Please refer to Table 5b, Table 5b is the asphericity coefficient of each lens in the camera module 200 shown in the fifth embodiment in a possible embodiment.

[0235] Table 5b

[0236] In the embodiment, the asphericity of the optical lens 10 in Table 5b can be defined by, but not limited to, the following asphericity formula:

[0237] wherein z is the relative distance of a point on the aspheric surface at a distance r from the optical axis to the tangent plane at the intersection of the optical axis with the tangent plane; r is the perpendicular distance of a point on the aspheric curve to the optical axis; c is the curvature; k is the conic constant; a i is the aspheric coefficient of the i-th order.

[0238] Table 5c is a table of basic parameters of the camera module 200 in a possible embodiment of the fifth embodiment. In Table 5c, Fno is the aperture number of the optical lens 10, 1.6 is the aperture number of the optical lens at the main camera end, 2.6 is the aperture number of the optical lens at the wide-angle end, TTL 非 is the TTL of the optical lens 10 in a non-working state, FOV is the field of view of the optical lens 10, f2 is the focal length of the second lens L2, and f9 is the focal length of the ninth lens L9.

[0239] Table 5c

[0240] Referring to FIGS. 25 and 26, FIG. 25 is an MTF diagram of the camera module 200 in the main camera state of the fifth embodiment, and FIG. 26 is an MTF diagram of the camera module 200 in the wide-angle state of the fifth embodiment. S represents the sagittal direction, and T represents the meridional direction. The MTF diagram can be used to measure the ability of the optical lens to transfer contrast from the object to the image, and the abscissa is the real image height, and the ordinate is the MTF value. The larger the MTF value at different image heights, the better the contrast and resolution, and the optical system can reproduce the details in the image, and the imaging quality is better. As can be seen from FIG. 25, the camera module 200 in the main camera state of the fifth embodiment has good imaging quality, and as can be seen from FIG. 26, the camera module 200 in the wide-angle state of the fifth embodiment has good imaging quality.

[0241] The camera module 200 provided in the present application has a value of fw / ImgH of 0.76625, a field of view FOV of the optical lens 10 ranging from 78° to 107°, a TTL of the optical lens 10 in a non-working state of 10.932 mm, a TTL of the main camera end of 19.672 mm, and a TTL of the wide-angle end of 21.800 mm. The optical lens 10 of the embodiment has a large field of view at the wide-angle end, can effectively correct the aberration and distortion of the optical lens 10, has good imaging quality at the main camera end and the wide-angle end, and has the characteristics of miniaturization.

[0242] Sixth Embodiment

[0243] Please refer to FIG. 27, FIG. 28 and FIG. 29, FIG. 27 is a structural schematic diagram of the camera module 200 of the sixth embodiment of the present application, the camera module 200 shown in FIG. 27 is in a non-working state, FIG. 28 is a structural schematic diagram of the camera module 200 shown in FIG. 27 in a main camera state, and FIG. 29 is a structural schematic diagram of the camera module 200 shown in FIG. 27 in a wide-angle state.

[0244] In the embodiment of the present application, the camera module 200 includes an optical lens 10, a filter 20 and a photosensitive element 30. Light rays pass through the optical lens 10 and the filter 20 in sequence and then form an image on the photosensitive element 30. The optical lens 10 can include a first lens group G1, a second lens group G2 and a third lens group G3 arranged along an optical axis in sequence.

[0245] The first lens group G1 can have a negative focal power, and the first lens group G1 can include a first lens L1 and a second lens L2 arranged along an object side to an image side in sequence.

[0246] The second lens group G2 can have a positive focal power, and the second lens group G2 can include a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8 and a ninth lens L9 arranged along an object side to an image side in sequence. The third lens L3 has a positive focal power.

[0247] The third lens group G3 can have a negative focal power, and the third lens group G3 can include a tenth lens L10 and an eleventh lens L11. The eleventh lens L11 has a negative focal power.

[0248] In some embodiments, the materials of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, the eighth lens L8, the ninth lens L9, the tenth lens L10 and the eleventh lens L11 can all be plastic. The lenses made of plastic material are conducive to achieving lightweight design of the optical lens 10.

[0249] In the embodiment, when the camera module 200 is switched from a non-working state to a main camera state, the first lens group G1 and the second lens group G2 move along the optical axis to the object side direction, and the distance between the first lens group G1 and the second lens group G2 can remain unchanged; when the camera module 200 is switched from the main camera state to the non-working state, the first lens group G1 and the second lens group G2 move along the optical axis to the image side direction, so that the overall size of the camera module 200 is relatively low, and does not cause the corresponding part of the electronic device 1000 to be protruding.

[0250] In the embodiment, when the camera module 200 is switched from the main camera state to the wide-angle state, the first lens group G1 can move along the optical axis to the object side direction, and the second lens group G2 can move along the optical axis to the image side direction to achieve focusing.

[0251] It can be understood that the camera module 200 in the embodiment of the present application can perform large target surface imaging at the main camera end, and the camera module 200 can also achieve equivalent large target surface imaging at the wide-angle end.

[0252] It can be understood that the third mirror group G3 in the embodiment of the present application can be a fixed mirror group. When the camera module 200 is switched from the main camera state to the wide-angle state, the third mirror group G3 can be fixed.

[0253] In some embodiments, the camera module 200 includes a diaphragm 40, which can be located between the first mirror group G1 and the second mirror group G2, or can be located at other positions, and the position of the diaphragm is not limited in the embodiment of the present application. When the camera module 200 is switched from the main camera state to the wide-angle state, the size of the diaphragm 40 can be reduced.

[0254] Referring to Table 6a, Table 6a is the radius of curvature, thickness and air gap, refractive index, Abbe number, normalized radius and conic constant of each lens and filter 30 of the optical lens 10 in the sixth embodiment at the main camera end and the wide-angle end. The Abbe number is also the dispersion coefficient. BK7 represents glass.

[0255] Table 6a

[0256] Please refer to Table 6b, Table 6b is the asphericity coefficient of each lens in the camera module 200 shown in the sixth embodiment in a possible embodiment.

[0257] Table 6b

[0258] In the embodiment, the asphericity of the optical lens 10 in Table 6b can be defined by, but not limited to, the following asphericity formula:

[0259] Wherein, z is the relative distance of the point on the asphericity with a distance of r from the optical axis to the tangent plane of the intersection point on the optical axis of the asphericity; r is the vertical distance of the point on the asphericity curve to the optical axis; c is the curvature; k is the conic coefficient; a i is the asphericity coefficient of the i-th order.

[0260] Please refer to Table 6c, Table 6c is the basic parameters of the camera module 200 shown in the sixth embodiment in a possible embodiment. In Table 6c, Fno is the aperture number of the optical lens 10, 1.5 is the aperture number of the optical lens at the main camera end, 2.3 is the aperture number of the optical lens at the wide-angle end, TTL 非For the TTL of the optical lens 10 in the non-working state, FOV is the field of view angle of the optical lens 10, f3 is the focal length of the third lens L3, and f11 is the focal length of the eleventh lens L11.

[0261] Table 6c

[0262] Referring to FIG. 30 and FIG. 31, FIG. 30 is an MTF diagram of the camera module 200 in the main camera state according to the sixth embodiment, and FIG. 31 is an MTF diagram of the camera module 200 in the wide-angle state according to the sixth embodiment. S represents the sagittal direction, and T represents the tangential direction. The MTF diagram can be used to measure the ability of the optical lens to transfer contrast from the object to the image, and the abscissa is the real image height, and the ordinate is the MTF value. The larger the MTF value at different image heights, the better the contrast and resolution, and the optical system can reproduce the details in the image, and the imaging quality is better. As can be seen from FIG. 30, the camera module 200 according to the sixth embodiment has good imaging quality in the main camera state, and as can be seen from FIG. 31, the camera module 200 according to the sixth embodiment has good imaging quality in the wide-angle state.

[0263] The camera module 200 provided by the application has a value of 0.8625 for fw / ImgH, a field of view angle FOV of the optical lens 10 ranging from 83° to 100°, a TTL of 15.200mm for the optical lens 10 in the non-working state, a TTL of 18.400mm at the main camera end, and a TTL of 23.220mm at the wide-angle end. The optical lens 10 according to the embodiment has a large field of view angle at the wide-angle end, can realize large field of view angle imaging, can effectively correct aberration and distortion of the optical lens 10, has good imaging quality at the main camera end and the wide-angle end, and has the characteristics of miniaturization.

[0264] The above merely provides a specific implementation of the application, but the protection scope of the application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the application, which should be covered by the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. An optical lens characterized in that, The first mirror group, the second mirror group and the third mirror group are arranged from the object side to the image side; The first mirror group comprises at least one lens with negative refractive power; The second mirror group comprises at least two lenses, at least one lens in the second mirror group has negative refractive power; The third mirror group comprises at least one lens with negative refractive power; The first mirror group and / or the second mirror group are zooming mirror groups, the distance between the first mirror group and the second mirror group increases during the optical lens from the prime end to the wide-angle end; the optical lens satisfies the following relationship: 0.1≤fw / ImgH≤1.1, fw is the focal length of the optical lens at the wide-angle end, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface of the optical lens.

2. The optical lens of claim 1, wherein, During the optical lens from the prime end to the wide-angle end, the first mirror group moves towards the object side along the optical axis and / or the second lens group moves towards the image side along the optical axis.

3. The optical lens of claim 1 or 2, wherein, During the optical lens from the non-working state to the prime end, the distance between the second mirror group and the third mirror group increases.

4. The optical lens of any of claims 1-3, wherein, The first mirror group has negative refractive power.

5. The optical lens of any of claims 1-4, wherein, The second mirror group has positive refractive power.

6. The optical lens of any of claims 1-5, wherein, The first lens of the second mirror group has positive refractive power.

7. The optical lens of any of claims 1-6, wherein, The optical lens satisfies the following relationship: 0.05 H11 is the pop-up height of the optical lens from the non-working state to the prime end, and TTL01 is the distance from the object side surface of the first lens of the first mirror group to the imaging surface on the optical axis when the optical lens is at the prime end.

8. The optical lens of any of claims 1-7, wherein, The optical lens satisfies the following relationship: 0.05 H22 is the pop-up height of the optical lens from the non-working state to the wide-angle end, and TTL02 is the distance from the object side surface of the first lens of the first mirror group to the imaging surface on the optical axis when the optical lens is at the wide-angle end.

9. The optical lens of any of claims 1-8, wherein, The optical lens satisfies the following relationship: TTL01 / TTL02≤0.9, TTL01 is the distance from the object side surface of the first lens of the first mirror group to the imaging surface on the optical axis when the optical lens is at the prime end, and TTL02 is the distance from the object side surface of the first lens of the first mirror group to the imaging surface on the optical axis when the optical lens is at the wide-angle end.

10. The optical lens of any of claims 1-9, wherein, The optical lens satisfies the following relationship: 1.4≤n21≤1.9, n21 is the refractive index of the first lens of the second mirror group.

11. The optical lens of any of claims 1-10, wherein, The optical lens satisfies the following relationship: 0.1 Fno1 is the aperture number of the optical lens at the prime end, and Fno2 is the aperture number of the optical lens at the wide-angle end.

12. The optical lens of any of claims 1-11, wherein, The optical lens satisfies the following relationship: 1 fm is the effective focal length of the optical lens at the prime end.

13. The optical lens of any of claims 1-12, wherein, The optical lens satisfies the following relationship: 0≤|f21 / fn|≤100, f21 is the focal length of the first lens of the second mirror group, and fn is the focal length of the lens closest to the image side of the optical lens.

14. The optical lens of any of claims 1-13, wherein, The third mirror group is a zooming mirror group.

15. The optical lens of any of claims 1-14, wherein, The third mirror group has negative refractive power.

16. The optical lens of any of claims 1-15, wherein, The lens closest to the image side in the optical lens has negative refractive power.

17. A camera module, comprising: An image sensor is located on the image side of the optical lens.

18. An electronic device, comprising: An image processor is in communication connection with the camera module, and is configured to acquire image data from the camera module and process the image data.

Images