Optical lens, camera module and electronic device

Abstract

The present application relates to the technical field of photographing, and in particular to an optical lens, a camera module and an electronic device. The optical lens comprises a first optical element and a second optical element. The first optical element comprises, arranged from an object side to an image side, a first lens, an optical path deflecting element and a second lens, the optical path deflecting element being used for changing an optical axis from a first direction to a second direction, the first lens having a positive refractive power, and the second lens having a negative refractive power. The first optical element is used for anti-shake. The second optical element is used for focusing. The surface profile of an object-side surface of the first lens matches that of an image-side surface of the second lens. In the present application, by configuring the sag of the image-side surface and the object-side surface of the first optical element and correcting the refractive index thereof, the image-side surface and the object-side surface of the first optical element are relatively matched with each other, such that the second lens better compensates the first lens, and thus the anti-shake first optical element has small aberration and high definition, thus helping to achieve a higher-performance anti-shaking capability of the optical lens.

Description

Optical lenses, camera modules, and electronic devices

[0001] This application claims priority to Chinese Patent Application No. 202510055770.4, filed on January 10, 2025, entitled "Camera Module and Electronic Device"; this application claims priority to Chinese Patent Application No. 202510310345.5, filed on March 14, 2025, entitled "Optical Lens, Camera Module and Electronic Device"; and this application claims priority to Chinese Patent Application No. 202511164235.9, filed on August 19, 2025, entitled "Optical Lens, Camera Module and Electronic Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of photography technology, and more particularly to an optical lens, a camera module, and an electronic device. Background Technology

[0003] In recent years, with the development of technology, electronic devices have been moving towards ultra-thin and miniaturized designs. Consumers have increasingly higher demands for mobile phone photography performance, such as larger lens surfaces, longer focal lengths, and better image stabilization. These demands place higher requirements on mobile phone lenses.

[0004] In existing technologies, image stabilization for cameras can be achieved using sensor-based image stabilization; however, this increases the length or height of the optical system. For lens-based image stabilization, prism-based image stabilization can be used, but this approach struggles to achieve camera miniaturization. Summary of the Invention

[0005] The purpose of this application is to provide an optical lens, a camera module, and an electronic device.

[0006] In a first aspect, embodiments of this application provide an optical lens, including a first optical element and a second optical element; the first optical element includes a first lens, an optical path reversing element, and a second lens arranged from the object side to the image side, the optical path reversing element being used to change the optical axis from a first direction to a second direction, the first lens having positive optical power, and the second lens having negative optical power; the second optical element is located on the image side of the first optical element, and the second optical element includes at least one lens group, during the focusing process of the optical lens, at least one lens group moves along the second direction; during the image stabilization process of the optical lens, the first optical element rotates around the first direction, and / or rotates around the second direction, and / or rotates around a third direction. The rotation direction is different from both the first and second directions. The first optical element satisfies: |F1 / EFL| < 10, and ||sag1*(n1-1)| - |sag2*(n2-1)|| / ||sag1*(n1-1)| + |sag2*(n2-1)|| < 0.5. Here, F1 is the focal length of the first optical element, EFL is the focal length of the optical lens, sag1 is the sag of the object-side surface of the first lens at the first aperture, sag2 is the sag of the image-side surface of the second lens at the second aperture, n1 is the refractive index of the first lens, and n2 is the refractive index of the second lens. The first aperture is equal to the second aperture.

[0007] For example, the first direction and the second direction are perpendicular. The third direction is perpendicular to both the first direction and the second direction.

[0008] In this design, the first lens is located on the object side of the optical path refraction element, and the second lens is located on the image side. The first lens has a positive optical power, which helps reduce the overall optical length of the lens and simplifies the optical path structure on its image side. The second lens has a negative optical power; when the first lens has a high optical power, the aberrations caused by its image stabilization movement are too large. The second lens is used to reduce the aberrations caused by the first lens. Furthermore, the movement of the optical path refraction element results in clearer image stabilization.

[0009] Furthermore, the synchronized motion stabilization of the first lens, the optical path deflection element, and the second lens helps to shorten the overall optical length of the camera module 30 and achieve higher image stabilization performance. Therefore, the optical lens of this embodiment can easily achieve high image stabilization performance and good image quality within a relatively small size.

[0010] In this embodiment, the first optical element is located at the front end of the optical lens and has a significant impact on the image stabilization and focusing of the optical lens. By making the total focal length of the first optical element small and the optical power large, the first optical element has a strong ability to converge light, which helps to reduce the total optical length of the optical lens, thereby improving the compactness of the optical lens and facilitating its miniaturization. Furthermore, the first optical element is closer to the object side in the optical lens, and the complementarity between the first lens and the second lens of the first optical element is good, which helps to improve the image stabilization capability of the optical lens.

[0011] Furthermore, by setting the sagittal height of the image side and object side of the first optical element and by correcting the refractive index, the shapes of the object side and image side of the first optical element are made to be nearly identical, making the image side and object side of the first optical element more matched. This results in better compensation of the first lens by the second lens, making the first optical element have smaller aberrations and higher sharpness during image stabilization, which is conducive to achieving higher performance image stabilization capability of the optical lens.

[0012] Therefore, when the optical lens simultaneously satisfies ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.5 and |F1 / EFL|<10, the optical power of both the image-side and object-side surfaces of the first optical element is fully utilized, and the first optical element has a suitable optical power, maximizing the performance of the first optical element and giving the optical lens strong image stabilization capabilities and high compactness.

[0013] In some implementations, the second aperture is the diameter at any point on the image-side surface of the second lens.

[0014] In this embodiment, all values ​​calculated by the first lens and the second lens according to Formula 1 are less than 0.5; in other words, the maximum value calculated by Formula 1 is less than 0.5. At this time, the object-side surface of the first lens and the image-side surface of the second lens are better matched, the image-side surface of the second lens provides stronger compensation for the object-side surface of the first lens, and the dynamic aberration compensation capability of the first optical element is strong.

[0015] In some implementations, the first optical element satisfies: 0.05 < (||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||)max < 0.5; or, 0.05 < (||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||)max < 0.3.

[0016] In this embodiment, when the value of the formula in this embodiment is smaller, the surface profiles of the image side and object side of the first optical element are more matched, the dynamic aberration of the first optical element during the anti-shake movement is smaller, the anti-shake ability of the optical lens is stronger, and the image quality is better. When the value of the formula is larger, the parameter design of the optical lens is easier. For example, it is easy to set a smaller length dimension of the optical lens, making the optical lens more compact, which is beneficial to setting the optical lens according to different application scenarios, and thus the optical lens has a strong adaptability. Therefore, by reasonably setting the sagittal height and refractive index of the image side and object side of the first optical element, it is beneficial for the optical lens as a whole to have both strong adaptability and anti-shake shooting ability.

[0017] In some embodiments, the optical lens satisfies: F1 / EFL < 7.5, or F1 / EFL < 2.5.

[0018] In this embodiment, by setting the focal length of the first optical element, the performance of the first optical element is fully utilized, further improving the compactness and anti-shake performance of the optical lens.

[0019] In some embodiments, the focal length fa of the first lens and the focal length EFL of the optical lens satisfy: 0.5 < fa / EFL < 1.5, or 0.6 < fa / EFL < 1.2, or 0.5 < fa / EFL < 3.

[0020] In this embodiment, by reasonably setting the focal length of the first lens to fully utilize the performance of the first lens, the miniaturized design of the optical lens and strong anti-shake ability are taken into account.

[0021] In some embodiments, the focal length fb of the second lens and the focal length EFL of the optical lens satisfy: |fb / EFL| < 2, or 0.5 < |fb / EFL| < 1.7, or |fb / EFL| < 5.

[0022] In this embodiment, by reasonably setting the focal length of the second lens, the second lens is better matched with the first lens, improving the anti-shake compensation ability of the first optical element, so that the optical lens has a strong anti-shake ability.

[0023] In some embodiments, the focal length fa of the first lens and the focal length fb of the second lens satisfy: 0.5 < |fa / fb| < 1.8, or 0.6 < |fa / fb| < 0.9.

[0024] In this embodiment, by reasonably setting the relationship between the focal length of the first lens and the focal length of the second lens, the first optical element has a strong anti-shake ability during anti-shake, and the aberration of the optical lens is small, that is, the optical lens has a strong anti-shake shooting ability.

[0025] In some embodiments, the second optical element includes a first one. During the focusing process of the optical lens, the first lens group moves in the second direction; the focal length fm of the first lens group and the focal length of the optical lens satisfy: 0.2 < fm / EFL < 1.2; or, 0.4 < fm / EFL < 1, or, 0.2 < |fm / EFL| < 1.2.

[0026] In this embodiment, by reasonably setting the focal length of the first lens group, it can better balance the shooting performance of the optical lens when shooting objects at infinity and shooting macro objects, and improve the imaging effect of the optical lens.

[0027] In some embodiments, the relationship between the axial length dm of the first lens group and the optical length TTL satisfies: dm / ttl < 0.4; where the optical length TTL is the length from the incident light surface of the optical lens to the imaging surface after the optical path is unfolded.

[0028] In this embodiment, the on-axis thickness of the first lens group is relatively thin, occupying a small length space in the optical lens, which is beneficial to reducing the length size of the optical lens, and thus beneficial to the miniaturization of the optical lens.

[0029] In some embodiments, the maximum focusing stroke d of the first lens group satisfies: d < 5.6 mm.

[0030] In this embodiment, by reasonably setting the maximum focusing stroke of the optical lens, it is beneficial to the miniaturization of the optical lens.

[0031] In some embodiments, the optical total length TTL1 of the optical lens and the image height IMH of the optical lens satisfy: TTL1 / IMH < �; or, TTL1 / IMH < 2; where the optical total length TTL1 is the distance from the end of the optical path folding element facing away from the imaging surface to the imaging surface.

[0032] In this embodiment, the optical lens is prone to have a relatively small optical total length or a relatively large image height, which is beneficial to the miniaturization design of the optical lens or the design of a large imaging surface, making the optical lens have stronger shooting performance.

[0033] In some embodiments, the optical total length TTL1 of the optical lens and the entrance pupil diameter EPD of the optical lens satisfy: TTL1 / EPD < 3.5, or, TTL1 / EPD < 2.8.

[0034] In this embodiment, by setting the ratio of the optical total length TTL1 of the optical lens to the entrance pupil diameter EPD of the optical lens, the optical lens is prone to have a relatively small optical total length or a relatively large entrance pupil diameter, which is beneficial to the miniaturization design of the optical lens or the design of a large light entrance amount.

[0035] In some embodiments, the total optical length TTL1 of the optical lens and the focal length EFL of the optical lens satisfy: TTL1 / EFL < 1.3.

[0036] In this embodiment, the ratio of the total optical length to the focal length of the optical lens is small, and the total optical length of the optical lens is slightly larger than the focal length of the optical lens, making the optical lens have a small length dimension and a high overall compactness.

[0037] In some embodiments, the total optical length TTL1 of the optical lens satisfies: 20 mm < TTL1 < 35 mm.

[0038] In this embodiment, the optical lens has a small length dimension. When the optical lens is applied to the camera module 30 and the electronic device, it occupies a small space, which is beneficial to the miniaturization design of the camera module 30 and the electronic device.

[0039] In some embodiments, the maximum anti-shake angle of the first optical element is within the range of 0.5° - 5°, or the maximum anti-shake angle of the first optical element is greater than 1°.

[0040] In this embodiment, at this time, the anti-shake angle of the first optical element is large, which can compensate for a large-amplitude shake of the optical lens, making the optical lens have stronger anti-shake ability.

[0041] In some embodiments, the first lens is adhesively connected or fixedly connected to the optical path turning element by a structural member, or the first lens is integrally formed with the optical path turning element; the second lens is adhesively connected or fixedly connected to the optical path turning element by a structural member, or the second lens is integrally formed with the optical path turning element.

[0042] In some embodiments, the focal length fa of the first lens and the focal length fb of the second lens satisfy: -0.4 < (fa + fb) / (fa - fb) < 0.4, or -0.3 < (fa + fb) / (fa - fb) < 0.3.

[0043] In this embodiment, through the cooperation of the focal lengths of the first lens and the second lens, the compensation effect of the second lens on the first lens is good, and thus it is easy for the first optical element as a whole to balance strong anti-shake ability and small aberration, and the anti-shake effect is good.

[0044] In some embodiments, the second optical element includes at least two lens groups, and the lens group closest to the image side in the second optical element includes at least 3 lenses.

[0045] In this embodiment, the number of lenses in the lens group closest to the image side in the second optical element is large, and it is easy for this lens group to balance aberrations such as spherical aberration and coma through the cooperation of multiple lenses, thereby making the optical lens have good imaging quality.

[0046] Secondly, embodiments of this application provide a camera module, including a photosensitive element and an optical lens as provided in any embodiment of the first aspect, wherein the photosensitive element is located on the image side of the optical lens.

[0047] In this embodiment, the camera module has strong image stabilization capabilities and a small size.

[0048] In some embodiments, the camera module further includes a stabilization motor and a focusing motor. A first optical element of the optical lens is mounted on the stabilization motor, a second optical element of the optical lens is mounted on the focusing motor, and a photosensitive element of the optical lens is fixedly connected to the focusing motor. The stabilization motor is used to drive the first optical element to stabilize its movement, and the focusing motor is used to drive the second optical element to focus or zoom.

[0049] Thirdly, embodiments of this application provide an electronic device, including an image processor and a camera module provided in any of the second aspects of the embodiments. The image processor is communicatively connected to the camera module and is used to acquire image data from the camera module and process the image data.

[0050] In this embodiment, the electronic device has strong image stabilization capabilities when shooting, which helps improve the user's shooting experience. Furthermore, due to the small size of the camera module, it is easy to miniaturize or thin the electronic device. Attached Figure Description

[0051] To illustrate the technical solutions in the embodiments or background art of this application, the accompanying drawings used in the embodiments or background art of this application will be described below.

[0052] Figure 1 is a schematic diagram of the structure of the electronic device provided in some embodiments of this application;

[0053] Figure 2 is a partial exploded structural diagram of the electronic device shown in Figure 1;

[0054] Figure 3 is a simplified structural diagram of the camera module shown in Figure 2;

[0055] Figure 4 is a simplified structural diagram of the camera module shown in Figure 3 at the telephoto end;

[0056] Figure 5 is a simplified structural diagram of the camera module shown in Figure 3 at the macro end;

[0057] Figure 6 is a structural schematic diagram of the camera module shown in Figure 5 in some embodiments;

[0058] Figure 7 is a structural schematic diagram of the camera module shown in Figure 6 in some embodiments;

[0059] Figure 8 is a schematic diagram of the camera module shown in Figure 5 at the telephoto end in Embodiment 1;

[0060] Figure 9 is a schematic diagram of the camera module shown in Figure 5 at the macro end in Embodiment 1;

[0061] Figure 10 is an axial color difference diagram of the camera module shown in Figure 8;

[0062] Figure 11 is a distortion diagram of the camera module shown in Figure 8;

[0063] Figure 12 is a schematic diagram of the camera module shown in Figure 5 at the telephoto end in Embodiment 2;

[0064] Figure 13 is a schematic diagram of the camera module shown in Figure 5 at the macro end in Embodiment 2;

[0065] Figure 14 is an axial color difference diagram of the camera module shown in Figure 12;

[0066] Figure 15 is a distortion diagram of the camera module shown in Figure 12;

[0067] Figure 16 is a schematic diagram of the camera module shown in Figure 5 at the telephoto end in Embodiment 3;

[0068] Figure 17 is a schematic diagram of the camera module shown in Figure 5 at the macro end in Embodiment 3;

[0069] Figure 18 is an axial chromatic difference diagram of the camera module shown in Figure 16;

[0070] Figure 19 is a distortion diagram of the camera module shown in Figure 16;

[0071] Figure 20 is a schematic diagram of the camera module shown in Figure 5 at the telephoto end in Embodiment 4;

[0072] Figure 21 is a schematic diagram of the camera module shown in Figure 5 at the macro end in Embodiment 4;

[0073] Figure 22 is an axial chromatic difference diagram of the camera module shown in Figure 20;

[0074] Figure 23 is a distortion diagram of the camera module shown in Figure 20;

[0075] Figure 24 is a schematic diagram of the camera module shown in Figure 5 at the telephoto end in Embodiment 5;

[0076] Figure 25 is a schematic diagram of the camera module shown in Figure 5 at the macro end in Embodiment 5;

[0077] Figure 26 is an axial chromatic difference diagram of the camera module shown in Figure 24;

[0078] Figure 27 is a distortion diagram of the camera module shown in Figure 24;

[0079] Figure 28 is a schematic diagram of the camera module shown in Figure 5 at the telephoto end in Embodiment 6;

[0080] Figure 29 is a schematic diagram of the camera module shown in Figure 5 at the macro end in Embodiment 6;

[0081] Figure 30 is an axial chromatic difference diagram of the camera module shown in Figure 28;

[0082] Figure 31 is a distortion diagram of the camera module shown in Figure 28;

[0083] Figure 32 is a schematic diagram of the camera module shown in Figure 5 at the telephoto end in Embodiment 7;

[0084] Figure 33 is a schematic diagram of the camera module shown in Figure 5 at the macro end in Embodiment 7;

[0085] Figure 34 is an axial chromatic difference diagram of the camera module shown in Figure 32;

[0086] Figure 35 is a distortion diagram of the camera module shown in Figure 32;

[0087] Figure 36 is a schematic diagram of the camera module shown in Figure 5 at the telephoto end in Embodiment 8;

[0088] Figure 37 is a schematic diagram of the camera module shown in Figure 5 at the macro end in Embodiment 8;

[0089] Figure 38 is an axial chromatic difference diagram of the camera module shown in Figure 36;

[0090] Figure 39 is a distortion diagram of the camera module shown in Figure 36;

[0091] Figure 40 is a schematic diagram of the camera module shown in Figure 5 at the telephoto end in Embodiment 9;

[0092] Figure 41 is a schematic diagram of the camera module shown in Figure 5 at the macro end in Embodiment 9;

[0093] Figure 42 is an axial color difference diagram of the camera module shown in Figure 40;

[0094] Figure 43 is a distortion diagram of the camera module shown in Figure 40;

[0095] Figure 44 is a schematic diagram of the camera module shown in Figure 5 at the telephoto end in Embodiment 10;

[0096] Figure 45 is a schematic diagram of the camera module shown in Figure 5 at the macro end in Embodiment 10;

[0097] Figure 46 is an axial chromatic difference diagram of the camera module shown in Figure 44;

[0098] Figure 47 is a distortion diagram of the camera module shown in Figure 44;

[0099] Figure 48 is a schematic diagram of the camera module shown in Figure 5 at the telephoto end in Embodiment Eleven;

[0100] Figure 49 is a schematic diagram of the camera module shown in Figure 48 at the macro end in some embodiments;

[0101] Figure 50 is an axial chromatic difference diagram of the camera module shown in Figure 48;

[0102] Figure 51 is a distortion diagram of the camera module shown in Figure 48;

[0103] Figure 52 is a schematic diagram of the camera module shown in Figure 5 at the telephoto end in Embodiment Twelve;

[0104] Figure 53 is a schematic diagram of the camera module shown in Figure 52 at the macro end in some embodiments;

[0105] Figure 54 is an axial chromatic difference diagram of the camera module shown in Figure 52;

[0106] Figure 55 is a distortion diagram of the camera module shown in Figure 52;

[0107] Figure 56 is a schematic diagram of the camera module shown in Figure 5 at the telephoto end in Embodiment Thirteen;

[0108] Figure 57 is a schematic diagram of the camera module shown in Figure 56 at the macro end in some embodiments;

[0109] Figure 58 is an axial chromatic difference diagram of the camera module shown in Figure 56;

[0110] Figure 59 is a distortion diagram of the camera module shown in Figure 56;

[0111] Figure 60 is a schematic diagram of the camera module shown in Figure 5 at the telephoto end in Embodiment Fourteen;

[0112] Figure 61 is a schematic diagram of the camera module shown in Figure 60 at the macro end in some embodiments;

[0113] Figure 62 is an axial chromatic difference diagram of the camera module shown in Figure 60;

[0114] Figure 63 is a distortion diagram of the camera module shown in Figure 60. Detailed Implementation

[0115] To facilitate understanding of the optical lens and camera module provided in the embodiments of this application, the relevant terms used in this application are explained as follows:

[0116] The mirror sag is the vertical distance from a point on the mirror surface to the mirror reference plane (usually the vertical plane perpendicular to the center of the mirror along the axis). It is used to describe the curvature of the mirror surface.

[0117] Focal power is equal to the difference between the convergence of the image-side beam and the convergence of the object-side beam; it characterizes the ability of an optical system to deflect light rays.

[0118] A lens or lens group with positive optical power, having a positive focal length, and having the effect of converging light.

[0119] A lens or lens group with negative optical power has a negative focal length and has the effect of diverging light.

[0120] Focal length, also known as focal length, is a measure of the convergence or divergence of light in an optical system. It refers to the perpendicular distance from the optical center of a lens or lens group to the focal plane when a distant object is projected into a sharp image. From a practical perspective, it can be understood as the distance from the center of the lens to the focal plane when the object is at infinity. For prime lenses, the position of their optical center remains constant; for telephoto lenses, changes in the optical center result in changes in the focal length.

[0121] The object side is defined by the lens; the side where the object is located is called the object side, and the surface of the lens closest to the object side is called the object side surface.

[0122] The image side is the side on which the image of the object is located, with the lens as the boundary. The surface of the lens closest to the image side is called the image side surface.

[0123] An aperture diaphragm is a device used to control the amount of light passing through the lens and entering the sensor inside the camera body. It is usually located inside the lens, but can also be located in front of the lens.

[0124] Aperture value, also known as F-number (Fno), is a relative value derived from the lens's focal length divided by the lens's entrance pupil diameter (the reciprocal of the relative aperture). A smaller aperture value allows more light to enter the lens in the same unit of time. A smaller aperture value results in a shallower depth of field, blurring the background and creating an effect similar to a telephoto lens.

[0125] Total track length (TTL) refers to the total length from the surface of the lens closest to the object to the imaging plane. TTL is a major factor in determining the height of the camera and the space occupied by the camera.

[0126] The imaging plane is located on the image side of all lenses in a telephoto lens, and is the plane on which the image is formed after light passes through each lens in the telephoto lens in sequence.

[0127] The optical axis is a perpendicular axis passing through the center of a lens. The lens optical axis is the axis passing through the centers of all the lenses in the lens. When light rays parallel to the optical axis enter a convex lens, an ideal convex lens should have all the light rays converging at a single point behind the lens; this point where all the light rays converge is called the focal point.

[0128] The focal point is the point where parallel light rays converge after being refracted by a lens or lens group.

[0129] The image-side focal plane, also known as the back focal plane or the second focal plane, is a plane that passes through the image-side focal point (also known as the back focal point or the second focal point) and is perpendicular to the optical axis of the system.

[0130] The Abbe number, also known as the dispersion coefficient, is the ratio of the difference in refractive index of an optical material at different wavelengths, representing the degree of dispersion of the material.

[0131] The field of view (FOV) in optical instruments is the angle between the two edges of the lens, representing the maximum range through which the image of the target object can pass through the lens. The size of the FOV determines the field of view of the optical instrument; a larger FOV results in a wider field of view but a lower optical magnification.

[0132] The sensor diagonal ImgH (Image Height) represents the diagonal length of the effective pixel area on the image sensor, which is also the image height of the imaging surface.

[0133] Aberrations are the properties of an ideal optical system in the paraxial region. Paraxial rays emitted from a point on an object intersect the image plane at a single point (i.e., the paraxial image point). However, in reality, rays passing through different apertures of a lens rarely intersect perfectly at a single point. Instead, they deviate from the position of the paraxial image point. These differences are collectively referred to as aberrations.

[0134] Axial spherical aberration, also known as longitudinal chromatic aberration, positional chromatic aberration, or axial aberration, occurs when a beam of light parallel to the optical axis converges at different positions after passing through a lens. This aberration is called positional chromatic aberration or axial chromatic aberration. This is because the lens images different wavelengths of light at different positions, causing the image-side focal planes of different colors of light to not coincide, resulting in the dispersion of polychromatic light.

[0135] Distortion, also known as image distortion, refers to the degree of distortion in the image formed by an optical system relative to the object itself. Distortion occurs due to the spherical aberration of the aperture. The height of the intersection point between the principal ray from different fields of view and the Gaussian image plane is not equal to the ideal image height; this difference is the distortion. Therefore, distortion only changes the imaging position of an off-axis object point on the ideal plane, causing a distortion in the image shape, but it does not affect the image's sharpness.

[0136] Astigmatism occurs because the object point is not on the optical axis of the optical system, and the emitted beam of light has an angle with the optical axis. After refraction by a lens, the convergence points of the meridional and sagittal beams are not at the same point. That is, the beam cannot be focused on a single point, resulting in an unclear image, hence astigmatism. The meridional and sagittal beams are the names of beams in two perpendicular planes within a rotationally symmetric optical system.

[0137] The meridional plane is the plane formed by the principal ray (principal beam) of an object point outside the optical axis and the optical axis.

[0138] The sagittal surface is the plane that passes through the principal ray (principal beam) of an object point outside the optical axis and is perpendicular to the meridional plane.

[0139] Field curvature refers to the difference in optical axis between the position of the sharpest image point after rays from the off-center field of view pass through an optical lens assembly and the position of the sharpest image point in the center field of view. When a lens has field curvature, the intersection of the entire beam does not coincide with the ideal image point. Although a sharp image point can be obtained at each specific point, the entire image plane is a curved surface.

[0140] The embodiments of this application are described below with reference to the accompanying drawings.

[0141] In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," "joining," and "joining" should be interpreted broadly. For example, "joining" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an electrical connection or a mechanical connection. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after connection. "Movable connection" refers to a connection where the relative positional relationship can change after connection. "Rotary connection" refers to a connection where the relative positional relationship can change. "Sliding connection" refers to a connection where the relative positional relationship can change. Furthermore, the integrated structure obtained by a one-piece molding process means that during the formation of one of the two components, that component is connected to the other component without requiring further processing (such as bonding, welding, snap-fit ​​connections, or screw connections) to connect the two components. Components A and B can be arranged relative to each other such that component A is projected along the target direction to obtain projection C, and component B is projected along the target direction to obtain projection D, with projection C and projection D at least largely overlapping. In some embodiments, the majority overlap can be any of the following: projection C is entirely within projection D; or projection D is entirely within projection C; or projection C and projection D intersect each other, and the intersection area of ​​projection C and projection D accounts for more than 50% of projection C or projection D.

[0142] The directional terms mentioned in the embodiments of this application, such as "top," "bottom," "inner," "outer," "upper," and "lower," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0143] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship. "Multiple" means at least two.

[0144] Furthermore, the limitations on relative positional relationships mentioned in the embodiments of this application, such as parallelism and perpendicularity, are all relative to the current technological level and are not absolutely strict limitations. Slight deviations are allowed; approximations of parallelism or perpendicularity are acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 and 10 degrees. Similarly, "A and B are perpendicular" means that A and B are perpendicular or approximately perpendicular, and the angle between A and B can be between 80 and 100 degrees.

[0145] Please refer to Figures 1 and 2. Figure 1 is a structural schematic diagram of the electronic device 100 provided in some embodiments of this application, and Figure 2 is a partially exploded structural schematic diagram of the electronic device 100 shown in Figure 1. In this embodiment, the electronic device 100 is described as a mobile phone. It is understood that Figures 1 and 2 only schematically show some components included in the electronic device 100. The actual shape, size, position, and structure of these components are not limited by Figures 1 and 2, and the electronic device 100 may also include more or fewer components than those in Figures 1 and 2.

[0146] In some embodiments, the electronic device 100 may include a screen 10, a housing 20, and a camera module 30. The screen 10 is used to display images, videos, etc. The screen 10 includes a light-transmitting cover 101 and a display screen 102. The light-transmitting cover 101 and the display screen 102 are stacked and fixedly connected. The light-transmitting cover 101 mainly serves to protect the display screen 102 and prevent dust. The material of the light-transmitting cover 101 includes, but is not limited to, glass. The display screen 102 can be a flexible display screen or a rigid display screen. For example, the display screen 102 can be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (MLED) display screen, a micro organic light-emitting diode (MOLED) display screen, a microorganic light-emitting diode (MOLED) display screen, a quantum dot light-emitting diode (QLED) display screen, a liquid crystal display (LCD), etc.

[0147] For example, the housing 20 is used to protect the internal electronic components of the electronic device 100. The housing 20 includes a back cover 201, a frame 202, and a camera decorative cover 203. The back cover 201 is located on the side of the display screen 102 away from the light-transmitting cover plate 101, and is stacked with the light-transmitting cover plate 101 and the display screen 102. The frame 202 is fixed to the back cover 201. For example, the frame 202 can be fixedly connected to the back cover 201 by adhesive. The frame 202 can also be integrally formed with the back cover 201, that is, the frame 202 and the back cover 201 are a single structure. The frame 202 is located between the back cover 201 and the light-transmitting cover plate 101. The light-transmitting cover plate 101 can be fixed to the frame 202 by adhesive. The light-transmitting cover plate 101, the back cover 201, and the frame 202 form an internal receiving space for the electronic device 100. This internal receiving space houses the display screen 102.

[0148] For example, the camera module 30 is used to capture photos / videos. For example, the camera module 30 may be located within the internal storage space of the electronic device 100. The number of camera modules 30 can be one or more; for example, two are illustrated in this embodiment. The camera module 30 can be used as a rear camera module 30 or as a front camera module 30.

[0149] For example, the light-incident surface of the camera module 30 faces the back cover 201. The back cover 201 has a mounting opening 2011, and the camera decorative cover 203 covers and is fixed to the mounting opening 2011. The camera decorative cover 203 is used to protect the camera module 30. In some embodiments, the camera decorative cover 203 protrudes to the side of the back cover 201 away from the light-transmitting cover plate 101. In this way, the camera decorative cover 203 can increase the mounting space of the camera module 30 in the thickness direction of the electronic device 100. In other embodiments, the camera decorative cover 203 may also be flush with the back cover 201 or recessed into the internal receiving space of the electronic device 100.

[0150] For example, the camera cover 203 may have a light-transmitting window 2031. The light-transmitting window 2031 allows light from the scene to enter the light-receiving surface of the camera module 30. That is, light passes through the back cover and enters the camera module 30.

[0151] In this embodiment, the camera module 30 serves as the rear camera module 30 of the electronic device 100. Exemplarily, the two camera modules 30 can be camera module 301 and camera module 302, respectively. Camera module 301 can serve as the rear main camera module 30, and camera module 302 can serve as the rear telephoto camera module 30 with variable zoom. In other embodiments, the electronic device 100 may also include another camera module 30, serving as the rear wide-angle camera module 30.

[0152] In other embodiments, the light-incident surface of the camera module 30 faces the light-transmitting cover plate 101. The display screen 102 has a light-path-avoiding hole. This light-path-avoiding hole allows light from the scene to pass through the light-transmitting cover plate 101 and then enter the light-incident surface of the camera module 30. Thus, the camera module 30 serves as a front-facing camera module 30 for the electronic device 100.

[0153] In some embodiments, as shown in FIG2, the electronic device 100 further includes a circuit board 50 and an image processor 60. The circuit board 50 and the image processor 60 are located within the internal housing space of the electronic device 100. The image processor 60 is fixed to and electrically connected to the circuit board 50. The image processor 60 is communicatively connected to the camera module 30. The image processor 60 is used to acquire image data from the camera module 30 and process the image data. The communication connection between the camera module 30 and the image processor 60 can include data transmission via electrical connections such as wiring, or data transmission via coupling or other methods. It is understood that the camera module 30 and the image processor 60 can also achieve a communication connection through other methods capable of data transmission.

[0154] In some embodiments, the electronic device 100 may further include an analog-to-digital converter (also known as an A / D converter, not shown in the figure). The analog-to-digital converter is connected between the camera module 30 and the image processor 60. The analog-to-digital converter is used to convert the signal generated by the camera module 30 into a digital image signal and transmit it to the image processor 60, whereby the image processor 60 processes the digital image signal and finally displays the image or video on the screen 10.

[0155] In some embodiments, the electronic device 100 may further include a memory (not shown in the figure), which is communicatively connected to the image processor 60. The image processor 60 processes the digital image signal and then transmits the image to the memory so that the image can be retrieved from the memory and displayed on the screen 10 at any time when it is needed to view the image. In some embodiments, the image processor 60 may also compress the processed digital image signal before storing it in the memory to save memory space.

[0156] In other embodiments, the electronic device 100 may also exclude the screen 10 and / or camera cover 203.

[0157] The electronic device 100 may have a width direction (X direction), a length direction (Y direction), and a thickness direction (Z direction), with the length direction perpendicular to the width direction and the thickness direction perpendicular to both the width and length directions. The display screen 102 and the housing 20 may be arranged relative to each other along the thickness direction of the electronic device 100. In this case, the housing 20 may be perpendicular to the thickness direction of the electronic device 100.

[0158] It is understood that the mounting position of the camera module 30 of the electronic device 100 shown in Figures 1 and 2 is merely illustrative, and this application does not strictly limit the mounting position of the camera module 30. In some other embodiments, the camera module 30 may also be mounted in other locations on the electronic device 100, for example, the camera module 30 may be mounted in the upper middle or upper right corner of the back of the electronic device 100. In some other embodiments, the electronic device 100 may include a terminal body and an auxiliary component that can rotate, move, or be detached relative to the terminal body, and the camera module 30 may also be mounted on the auxiliary component.

[0159] Please refer to Figures 2 and 3. Figure 3 is a simplified structural diagram of the camera module 30 shown in Figure 2.

[0160] In some embodiments, the camera module 30 may include an optical lens 1 and a photosensitive element 2, the photosensitive element 2 being located on the image side of the optical lens 1.

[0161] Among them, the photosensitive element 2 (also known as the image sensor) is a semiconductor chip with hundreds of thousands to millions of photodiodes on its surface, which generate charges when exposed to light.

[0162] The photosensitive element 2 utilizes the photoelectric conversion function of an optoelectronic device to convert the light image on its photosensitive surface into an electrical signal proportional to the light image. The photosensitive surface of the photosensitive element 2 faces the optical lens 1. The photosensitive element 2 can be a charge-coupled device (CCD), a complementary metal-oxide semiconductor (CMOS), a phototransistor, or a thin-film transistor, etc. A CCD is made of a highly sensitive semiconductor material that converts light into electrical charge. A CCD consists of many photosensitive units, typically measured in megapixels. When the surface of the CCD is illuminated, each photosensitive unit reflects a charge onto the component. The signals generated by all the photosensitive units are added together to form a complete image. A CMOS mainly utilizes semiconductors made of silicon and germanium, allowing N-type (negative) and P-type (positive) semiconductors to coexist on the CMOS. The current generated by these complementary effects can be recorded and interpreted by the processing chip as an image.

[0163] The optical lens 1 primarily utilizes the refraction principle of lenses for imaging. Light from the scene passes through the optical lens 1, forming a clear image on the focal plane, which is then recorded by the photosensitive element 2 located on the focal plane. For example, the optical lens 1 can be a telephoto lens, capable of better capturing objects at greater distances.

[0164] The optical lens 1 can be a vertical lens or a periscope lens. This embodiment describes the optical lens 1 as a periscope lens. When the optical lens 1 is a periscope lens, it is better suited for use in thin electronic devices.

[0165] In some embodiments, the camera module 30 may further include a filter 3. The filter 3 may be located between the optical lens 1 and the photosensitive element 2.

[0166] The filter 3 is used to filter out unwanted wavelengths of light, preventing false colors or ripples from the photosensitive element 2, thereby improving its effective resolution and color reproduction. For example, the filter 3 can be an infrared filter 3. In this embodiment, the filter 3 is a separate component. In other embodiments, the filter 3 may be omitted, and filtering may be achieved by surface treatment or material treatment of at least one optical element of the telephoto lens. This application does not strictly limit the specific embodiments of the structure or component used to achieve filtering.

[0167] In some embodiments, the camera module 30 may further include a housing 40. The photosensitive element 2 and the optical lens 1 may be installed inside the housing 40. The housing 40 may have a light-transmitting opening 401 for transmitting light so that external scene light can enter the optical lens 1.

[0168] In this embodiment, external light can pass through the optical lens 1 and illuminate the photosensitive surface of the photosensitive element 2. Exemplarily, the working principle of the camera module 30 is as follows: the light reflected from the subject passes through the optical lens 1 and the filter 3 to generate an optical image, which is then projected onto the photosensitive surface of the photosensitive element 2. The photosensitive element 2 converts the optical image into an electrical signal (i.e., an analog image signal) and transmits it to the analog-to-digital converter (ADC), which then converts it into a digital image signal for the image processor 60 (see Figure 2).

[0169] Please refer to Figures 4 and 5. Figure 4 is a simplified structural diagram of the camera module 30 shown in Figure 3 at the telephoto end, and Figure 5 is a simplified structural diagram of the camera module 30 shown in Figure 3 at the macro end. Figures 4 and 5 are only schematic diagrams of the lenses or lens groups and are not intended to limit the number of lenses in a lens group, nor to limit the optical power, surface shape, etc., of each lens.

[0170] In some embodiments, the camera module 30 may include an optical lens 1, a photosensitive element 2, and a filter 3, with light passing sequentially through the optical lens 1 and the filter 3 to the photosensitive element 2 for imaging. The optical lens 1 includes a first optical element G1 and a second optical element G2, with the second optical element G2 located on the image side of the first optical element G1.

[0171] The first optical element G1 includes a front lens group G11, an optical path deflection element G12, and a rear lens group G13 arranged along the object side to the image side.

[0172] For example, the front lens group G11 may include at least one lens. The optical power of the front lens group G11 may be positive.

[0173] The front lens group G11 may consist of only one lens, namely the first lens L1. In this case, the optical power of the first lens L1 is positive. The setup of the front lens group G11 is relatively simple and easy to connect to the optical path reversing element G12. Furthermore, the small thickness of the front lens group G11 helps to reduce the shoulder height of the optical lens 1. For example, the optical axis of the front lens group G11 can be parallel to the Z-direction.

[0174] In other examples, the front lens group G11 may also include multiple lenses, in which case the first lens L1 may be the lens closest to the object side in the front lens group G11. For example, the number of lenses in the front lens group G11 may be 2, 3, 4, etc. When the front lens group G11 has multiple lenses, aberrations can be eliminated or reduced by combining different materials of the multiple lenses; aberrations can also be eliminated or reduced by combining lenses with positive optical power and lenses with negative optical power. This embodiment does not strictly limit the number of lenses in the front lens group G11.

[0175] For example, the optical path deflector element G12 is used to change the propagation direction of the light beam.

[0176] The optical path reversing element G12 is used to change the propagation direction of the light beam from a first direction to a second direction. The first direction can be the direction in which the light beam enters the optical path reversing element G12, and this direction can be parallel to the thickness direction of the electronic device. The second direction can be the direction in which the light beam exits the optical path reversing element G12, and this direction can be perpendicular to the thickness direction of the electronic device. It can be understood that the optical path reversing element G12 is located on the image side of the front lens group G11, and the first direction can be the direction in which the light beam exits from the front lens group G11, and this direction can be parallel to the optical axis of the front lens group G11. The optical path reversing element G12 is located on the object side of the second optical element G2, and the light beam can enter the second optical element G2 from the second direction; when the optical axis of the second optical element G2 is not bent, the second direction can be parallel to the optical axis of the second optical element G2.

[0177] For example, the optical path deflection element G12 can be a prism, a mirror, etc.

[0178] For example, the rear lens group G13 may include at least one lens. The optical power of the rear lens group G13 may be negative.

[0179] The rear lens group G13 may consist of only one lens, namely the second lens L2. In this case, the optical power of the second lens L2 can be negative. The configuration of the rear lens group G13 is relatively simple and easy to connect to the optical path deflection element G12. For example, the optical axis of the rear lens group G13 can be parallel to the Y-direction.

[0180] In other examples, the rear lens group G13 may also include multiple lenses, in which case the second lens L2 may be the lens closest to the image side in the rear lens group G13. For example, the number of lenses in the rear lens group G13 may be 2, 3, 4, etc. When the rear lens group G13 has multiple lenses, aberrations can be eliminated or reduced by combining different materials of the multiple lenses; aberrations can also be eliminated or reduced by combining lenses with positive optical power and lenses with negative optical power. This embodiment does not strictly limit the number of lenses in the rear lens group G13.

[0181] For example, in the first optical element G1, the first lens L1 and the second lens L2 are fixedly connected to the optical path reversing element G12. The first lens L1 and the second lens L2 can move synchronously with the optical path reversing element G12. When the optical lens 1 moves, the first lens L1, the optical path reversing element G12, and the second lens L2 can move, thereby stabilizing the image of the subject and improving the shooting effect of the optical lens 1. It is easy to understand that dynamic aberration compensation is the aberration compensation capability of the first optical element G1 during image stabilization movement.

[0182] For example, in the first optical element G1, the first lens L1 can be fixedly connected to the optical path reversing element G12 by gluing, or the first lens L1 can be fixedly connected to the optical path reversing element G12 by a fastener, or the first lens L1 and the optical path reversing element G12 can be integrally formed.

[0183] Similarly, the second lens L2 can be fixedly connected to the optical path reversing element G12 by gluing or fastening. Alternatively, the second lens L2 can be integrally formed with the optical path reversing element G12.

[0184] During image stabilization, the first optical element G1 rotates about a first direction, and / or about a second direction, and / or about a third direction. The third direction differs from both the first and second directions, and may be perpendicular to the thickness direction of the electronic device. For example, the third direction may be perpendicular to both the first and second directions.

[0185] The second optical element G2 includes at least one lens group. The second optical element G2 may include the first lens group G21.

[0186] For example, the optical axis of the first lens group G21 can be parallel to the Y direction.

[0187] For example, the first lens group G21 may include at least one lens. For instance, the number of lenses in the first lens group G21 may be one, two, three, four, etc. When the first lens group G21 has multiple lenses, aberrations can be eliminated or reduced by combining different materials of the multiple lenses; aberrations can also be eliminated or reduced by combining lenses with positive optical power and lenses with negative optical power. This embodiment does not strictly limit the number of lenses in the first lens group G21.

[0188] For example, the first lens group G21 can move along the optical axis to achieve focusing of the optical lens 1. The position of the first lens group G21 can be moved to a set position and kept relatively fixed. The first lens group G21 can be driven by a driving mechanism such as a voice coil motor to achieve movement. The first lens group G21 can refer to the lens group whose position on the optical lens 1 can be changed along the optical axis to perform zooming or focusing.

[0189] In this embodiment, the first lens L1 is located on the object side of the optical path reversal element G12, and the second lens L2 is located on the image side of the optical path reversal element G12. The optical power of the first lens L1 is positive, which helps to reduce the total optical length of the optical lens 1 and simplifies the optical path structure on its image side. The optical power of the second lens L2 is negative. When the optical power of the first lens L1 is too large, the aberrations caused by the image stabilization movement of the first lens L1 are too large. The second lens L2 is used to reduce the aberrations caused by the first lens L1. Furthermore, the movement of the optical path reversal element G12 achieves clearer image stabilization.

[0190] In addition, the synchronous motion stabilization of the first lens L1, the optical path deflection element G12, and the second lens L2 helps to shorten the total optical length of the camera module 30 and achieve higher stabilization performance.

[0191] Therefore, the optical lens 1 of this embodiment can easily achieve high image stabilization performance and good image quality in a relatively small size.

[0192] In some embodiments, the second optical element G2 includes at least two lens groups, and the lens group closest to the image side in the second optical element G2 includes at least three lenses.

[0193] For example, when the second optical element G2 includes a first lens group G21, a second lens group G22 and a third lens group G23, the third lens group G23 is the lens group closest to the image side.

[0194] For example, when the second optical element G2 includes a first lens group G21 and a second lens group G22, the second lens group G22 is the lens group closest to the image side.

[0195] At this time, the lens group closest to the image side in the second optical element G2 has a large number of lenses. This lens group can easily balance aberrations such as spherical aberration and coma through the cooperation of multiple lenses, so that the optical lens 1 has better imaging quality.

[0196] In some embodiments, optical lens 1 may be a fixed-focus lens. In other embodiments, optical lens 1 may be a zoom lens.

[0197] In some embodiments, the photosensitive element 2 can be perpendicular to the optical axis of the second optical element G2. In this case, the photosensitive element 2 is essentially vertically positioned, and there is no need to set up a component to refract the optical path between the second optical element G2 and the photosensitive element 2. This allows the second optical element G2 to have more space for setting and movement, thereby simplifying the setup of the camera module 30.

[0198] In some other embodiments, the photosensitive element 2 may form an acute angle with the optical axis of the second optical element G2, or the photosensitive element 2 may be parallel to the optical axis of the second optical element G2. It is understood that the direction of the optical axis can be changed by elements such as prisms that deflect the optical path.

[0199] In some embodiments, the second optical element G2 of the optical lens 1 may further include a second lens group G22 and a third lens group G23. The second lens group G22 may be located between the first optical element G1 and the first lens group G21, and the third lens group G23 may be located on the image side of the second lens group G22.

[0200] For example, the optical axis of the second lens group G22 can be perpendicular to the Z direction. For instance, the optical axis of the third lens group G23 can be parallel to the Y direction.

[0201] For example, the second lens group G22 may include at least one lens. For instance, the number of lenses in the second lens group G22 may be one, two, three, four, etc. When the second lens group G22 has multiple lenses, aberrations can be eliminated or reduced by combining different materials of the multiple lenses; aberrations can also be eliminated or reduced by combining lenses with positive optical power and lenses with negative optical power. This embodiment does not strictly limit the number of lenses in the second lens group G22.

[0202] For example, the optical axis of the third lens group G23 can be perpendicular to the Z direction. Alternatively, the optical axis of the third lens group G23 can be parallel to the Y direction.

[0203] For example, the third lens group G23 may include at least one lens. For instance, the number of lenses in the third lens group G23 may be one, two, three, four, etc. When the third lens group G23 has multiple lenses, aberrations can be eliminated or reduced by combining different materials of the multiple lenses; aberrations can also be eliminated or reduced by combining lenses with positive optical power and lenses with negative optical power. This embodiment does not strictly limit the number of lenses in the third lens group G23.

[0204] For example, the second lens group G22 and the third lens group G23 can each be a fixed lens group.

[0205] In this embodiment, by setting the second lens group G22 and the third lens group G23, the optical lens 1 has more lenses or optical elements, which makes it easier to improve the imaging quality of the optical lens 1 by coordinating the optical power, refractive index and other parameters of multiple optical elements, and also makes the design of the optical lens 1 simpler.

[0206] Referring to Figures 4 and 5, during the focusing process of the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 is fixed, and the first lens group G21 moves along the second direction toward the first optical element G1. That is, the distance between the first lens group G21 and the first optical element G1 decreases, so as to capture objects at closer distances and make the image clear on the imaging plane.

[0207] In some embodiments, the optical lens 1 may further include a first lens. The first lens is located on the image side of the first optical element G1, and the first lens may be a first lens outside the first optical element G1 on the image side.

[0208] For example, when the image side of the first optical element G1 is the second optical element G2, the first lens is the first lens on the image side of the second optical element G2. For instance, when the second optical element G2 includes a second lens group G22, the first lens is the first lens on the object side of the second lens group G22.

[0209] The object side of the first lens can be convex, meaning the optical power of the object side of the first lens is positive, and the image side of the first lens can be concave, meaning the optical power of the image side of the first lens is negative.

[0210] In this embodiment, the light emitted by the first optical element G1 passes through the first lens. Therefore, by reasonably setting the shape of the first lens, it is beneficial to make the light from the optical lens 1 converge better. The high matching degree between the setting of the first lens and its image-side lens (i.e., the second lens L2) is beneficial to improving the image quality.

[0211] In some embodiments, the optical lens 1 achieves dynamic aberration balance in image stabilization mode by rotating the first optical element G1. The focal length of the first optical element G1 is F1, and the focal length of the optical lens 1 is EFL. The optical lens 1 satisfies: |F1 / EFL|<10.

[0212] Since the first optical element G1 can fold the optical path, the focal length of the first optical element G1 can be the focal length after the optical path is unfolded.

[0213] For example, optical lens 1 can satisfy: |F1 / EFL| < 7.5 or |F1 / EFL| < 2.5. For instance, the value of |F1 / EFL| can be 1.468, 1.5, 1.593, 1.727, 1.924, 2.067, 2.082, 2.24, 2.352, 2.5, 3, 3.5, 4, 5.3, 5.9, 6, 7.5, 8.2, 9.3, etc. In this case, by setting the focal length of the first optical element G1, the performance of the first optical element G1 is fully utilized, further improving the compactness and image stabilization performance of optical lens 1.

[0214] In this embodiment, the first optical element G1 is located at the front end of the optical lens 1 and has a significant impact on the image stabilization and focusing of the optical lens 1. By making the total focal length of the first optical element G1 small and the optical power large, the first optical element G1 has a strong ability to converge light, which is conducive to reducing the total optical length of the optical lens 1, that is, improving the compactness of the optical lens 1 and facilitating the miniaturization of the optical lens 1. Furthermore, the first optical element G1 is closer to the object side in the optical lens 1, and the complementarity between the first lens and the second lens of the first optical element G1 is good, which is conducive to improving the image stabilization capability of the optical lens 1.

[0215] In some embodiments, the parameters in the optical lens 1 may be related by Formula 1: ||sag1*(n1-1)|-|sag2*(n2-1)|) / (|sag1*(n1-1)|+|sag2*(n2-1)||.

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

[0217] For example, at the object-side aperture r1 of the first lens L1, the corresponding sagitta is h1, and at the image-side aperture r2 of the second lens L2, the corresponding sagitta is h2, where r1 = r2. In this case, the value of sag1 is h1, and the value of sag2 is h2.

[0218] It is understandable that every point on a mirror surface has a sag, and points with the same aperture on the mirror surface have the same sag. The set of sags of all points on the mirror surface can represent the surface shape of that surface. Specifically, the object-side surface of the first lens L1 is also the object-side surface of the front lens group G11 and the object-side surface of the first optical element G1, and the image-side surface of the second lens L2 is also the image-side surface of the rear lens group G13 and the image-side surface of the first optical element G1. It is also understandable that the object-side surface of the first optical element G1 is also its incident surface, and the image-side surface of the first optical element G1 is also its exit surface.

[0219] It is understandable that when the current lens group G11 has multiple lenses, the refractive indices of these lenses can be the same or different. Similarly, when the rear lens group G13 has multiple lenses, the refractive indices of these lenses can be the same or different.

[0220] Formula 1 represents the difference in sagittal height between the object side of the first lens L1 and the image side of the second lens L2 at the same aperture. The refractive index of the first lens L1 and the refractive index of the rear lens group G13 are introduced for correction. The smaller the difference in sagittal height, the smaller the aberration of the first optical element G1 during image stabilization, and the stronger the image stabilization performance.

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

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

[0223] In other examples, the first aperture can be the aperture of any point on the object side of the front lens group G11, or the second aperture corresponds to the aperture of any point on the image side of the rear lens group G13. In this case, all values ​​calculated by the first lens L1 and the second lens L2 according to Formula 1 are less than 0.5; in other words, the maximum value calculated by Formula 1 is less than 0.5. At this time, the object side of the first lens L1 and the image side of the second lens L2 are better matched, the image side of the second lens L2 provides stronger compensation for the object side of the first lens L1, and the dynamic aberration compensation capability of the first optical element G1 is strong.

[0224] In this embodiment, by setting the sagittal height of the image side and object side of the first optical element G1 and by correcting the refractive index, the shapes of the object side and image side of the first optical element G1 are made to be nearly identical, so that the image side and object side of the first optical element G1 are more matched, thereby making the compensation of the second lens L2 for the first lens L1 better, so that the first optical element G1 has small aberrations and high sharpness when stabilizing, which is conducive to achieving a higher performance stabilization capability of the optical lens 1.

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

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

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

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

[0229] At this point, the smaller the value of Formula 1, the better the surface shape of the image-side and object-side surfaces of the first optical element G1 are matched. This results in less dynamic aberration in the first optical element G1 during image stabilization, leading to stronger image stabilization and better image quality for the optical lens 1. Conversely, the larger the value of Formula 1, the easier it is to design the parameters of the optical lens 1. For example, it is easier to set a smaller length for the optical lens 1, making it more compact. This allows for customization of the optical lens 1 according to different application scenarios, thus giving it greater adaptability. Therefore, by rationally setting the sag and refractive index of the image-side and object-side surfaces of the first optical element G1, the optical lens 1 can achieve both strong adaptability and image stabilization capabilities.

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

[0231] In some embodiments, the optical lens 1 satisfies: ttl1 / EFL < 1.3. Wherein, ttl1 is the overall optical length of the optical lens 1, which can be the distance from the edge of the first optical element G1 on the side away from the imaging surface to the imaging surface.

[0232] Exemplarily, 1 < ttl1 / EFL < 1.2. For example, the value of ttl1 / EFL can be taken as 0.8, 0.9, 1, 1.084, 1.092, 1.094, 1.1, 1.116, 1.139, 1.111, 1.145, 1.192, 1.2, 1.3, etc.

[0233] In this embodiment, the ratio of the overall optical length to the focal length of the optical lens 1 is small, which is beneficial to setting a smaller overall optical length or a larger focal length of the optical lens 1, making the optical lens 1 as a whole more compact and conducive to the miniaturized design of the optical lens 1.

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

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

[0236] In some embodiments, the optical lens 1 can focus for imaging at infinity and close range, and the optical lens 1 satisfies: L < 300mm, where L is the distance of the macro shooting imaging of the optical lens 1.

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

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

[0239] In this embodiment, the optical lens 1 can perform macro shooting at a relatively small distance, which is beneficial for shooting objects at a relatively close distance and improves the shooting ability of the optical lens 1.

[0240] In some embodiments, the maximum focusing travel d of the first lens group G21 < 5.6 mm.

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

[0242] In this embodiment, by reasonably setting the maximum focusing travel of the optical lens 1, it is beneficial for the miniaturization of the optical lens 1.

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

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

[0245] In this embodiment, in the optical lens 1, the maximum focusing travel of the first lens group G21 is relatively small, and the occupied space of the first lens group G21 is small, which is beneficial for reducing the overall optical length of the optical lens 1, and thus beneficial for reducing the length dimension of the optical lens 1.

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

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

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

[0249] In this embodiment, by reasonably setting the focal length of the first lens group G21, it can better balance the shooting performance of the optical lens 1 when shooting an object at infinity and a macro object, and improve the imaging effect of the optical lens 1.

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

[0251] Exemplarily, 9 mm < fm < 17 mm. For example, the value of fm can be 8 mm, 9 mm, 9.956 mm, 13.356 mm, 14.241 mm, 14.168 mm, 15.220 mm, 15.422 mm, 16.428 mm, 26.260 mm, 27 mm, 29 mm, 30 mm, etc.

[0252] In some embodiments, the on-axis thickness dm of the first lens group G21 in the optical axis direction and the optical length TTL of the optical lens 1 satisfy: dm / ttl < 0.4. Here, TTL is the length from the incident light surface to the imaging surface of the optical lens 1 after the optical path is unfolded, that is, TTL = W1 + W2, where W1 is the distance from the object side surface of the first lens L1 to the optical axis of the second lens L2, and W2 is the distance from the optical axis of the first lens L1 to the imaging surface.

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

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

[0255] In this embodiment, the on-axis thickness of the first lens group G21 is relatively thin, occupying a small length space in the optical lens 1, which is beneficial to reducing the length size of the optical lens 1, and thus beneficial to the miniaturization setting of the optical lens 1.

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

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

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

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

[0260] In this embodiment, the optical lens 1 is likely to have a small total optical length or a large image height, which is beneficial for the miniaturization design of the optical lens 1 or the design of a large imaging surface, so that the optical lens 1 has stronger shooting performance.

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

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

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

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

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

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

[0267] In this embodiment, the ratio of the total optical length to the focal length of the optical lens 1 is relatively small, and the total optical length of the optical lens 1 is slightly greater than the focal length of the optical lens 1, so that the optical lens 1 has a smaller length dimension and the overall compactness of the optical lens 1 is high.

[0268] In some embodiments, the co-rotation of the first optical element G1 can achieve an anti-shake effect of up to 0.5° - 5°. That is, the co-rotation of the front lens group G11 and the rear lens group G13 with the optical path deflection element G12 can achieve an anti-shake effect of up to 0.5° - 5°. Exemplarily, the maximum anti-shake angle of the first optical element is greater than 1°

[0269] At this time, the first optical element G1 has a relatively large anti-shake angle, which can compensate for a large range of晃动 of the optical lens 1, making the optical lens 1 have stronger anti-shake ability.

[0270] In some embodiments, when the first optical element G1 performs dynamic aberration balancing for anti-shake, it can rotate around the X direction (i.e., nodding motion), and for anti-shake in the shaking head direction, it rotates around the Y-axis or Z-axis direction (i.e., shaking head motion). Among them, the position of the point around which the first optical element G1 rotates can be specifically set according to the design of the motor scheme, and this embodiment does not make specific limitations.

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

[0272] Exemplarily, 0.6 < fa / EFL < 1.2.

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

[0274] In this embodiment, by reasonably setting the focal length of the first lens L1, the performance of the first lens L1 is fully utilized, so as to take into account the miniaturized design of the optical lens 1 and strong anti-shake ability.

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

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

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

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

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

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

[0281] In this embodiment, by reasonably setting the focal length of the second lens L2, the second lens L2 is better matched with the first lens L1, thereby improving the image stabilization compensation capability of the first optical element G1, and thus the optical lens 1 has a strong image stabilization capability.

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

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

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

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

[0286] In this embodiment, by reasonably setting the relationship between the focal length of the first lens L1 and the focal length of the second lens L2, the first optical element G1 has a strong image stabilization capability during image stabilization, and the aberration of the optical lens 1 is small, that is, the optical lens 1 has a strong image stabilization shooting capability.

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

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

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

[0290] Exemplarily, the optical power of the first lens L1 is positive, and the optical power of the second lens L2 is negative.

[0291] In this embodiment, through the cooperation of the focal lengths of the first lens L1 and the second lens L2, the compensation effect of the second lens L2 on the first lens L1 is good. Furthermore, it is easy for the first optical element G1 to take into account both strong anti-shake ability and small aberration, and the anti-shake effect is good.

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

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

[0294] Exemplarily, 30 mm < F1 < 40 mm.

[0295] In this embodiment, by reasonably setting the focal length of the first optical element G1, the first optical element G1 makes a great contribution to reducing the length of the optical lens 1. Furthermore, it takes into account the miniaturized design of the optical lens 1 and the strong anti-shake shooting ability.

[0296] Please refer to FIGS. 6 and 7 for combination. FIG. 6 is a schematic structural diagram of the camera module 30 shown in FIG. 5 in some embodiments, and FIG. 7 is a schematic structural diagram of the camera module 30 shown in FIG. 6 in some embodiments.

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

[0298] Among them, the first optical element G1 can be mounted on the anti-shake motor 4.

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

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

[0301] In some embodiments, the camera module 30 can achieve primary optical path reflection through the first optical element G1, with the photosensitive element 2 and the second optical element G2 arranged perpendicularly to each other along their optical axes. In other embodiments, secondary optical path reflection can also be achieved by adding a rear prism, with the photosensitive element 2 and the first lens group G21 arranged perpendicularly to each other along their optical axes. Alternatively, multiple optical path reflection can be achieved by adding a rear Schmitt prism, with the photosensitive element 2 and the second optical element G2 arranged at an angle of 0-90° (or 90°-180°) along their optical axes.

[0302] In some embodiments, the focusing motor 5 can be driven by a voice coil motor or a piezoelectric motor. The voice coil motor can be a moving magnet type or a moving coil type. The driving arrangement can be single-sided driving or double-sided driving. The guiding mechanism of the focusing motor 5 can be a ball bearing or a sliding shaft.

[0303] In some embodiments, the first optical element G1 can be mounted on the image stabilization motor 4, and after the second optical element G2 is assembled with the focusing motor 5, the two components and the photosensitive element 2 can be aligned and then bonded together with adhesive.

[0304] Example 1:

[0305] Please refer to Figures 8 and 9. Figure 8 is a structural schematic diagram of the camera module 30 shown in Figure 5 at the telephoto end in Embodiment 1, and Figure 9 is a structural schematic diagram of the camera module 30 shown in Figure 5 at the macro end in Embodiment 1.

[0306] In some embodiments, the camera module 30 may include an optical lens 1, a photosensitive element 2, and a filter 3, with light passing sequentially through the optical lens 1 and the filter 3 to the photosensitive element 2 for imaging. The optical lens 1 includes a first optical element G1 and a second optical element G2, with the second optical element G2 located on the image side of the first optical element G1.

[0307] The first optical element G1 includes a front lens group G11, an optical path deflection element G12, and a rear lens group G13.

[0308] For example, the front lens group G11 may include a lens, namely the first lens L1. The optical path reversing element G12 may be a prism, which is used to change the optical axis from a first direction to a second direction. The rear lens group G13 may include a lens, namely the second lens L2.

[0309] For example, the first lens L1, the optical path reversing element G12, and the second lens L2 have different refractive indices. Therefore, the first lens L1 and the second lens L2 can be fixedly connected to the optical path reversing element G12 by adhesive. The first lens L1, the optical path reversing element G12, and the second lens L2 can also be connected by a fastener to form an integral component.

[0310] For example, the first lens L1 has positive optical power, and the second lens L2 has negative optical power. The object-side surface of the first lens L1 is convex, and the image-side surface of the second lens L2 is concave.

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

[0312] For example, the second lens group G22 includes a lens, namely the third lens L3. The second lens group G22 is a fixed lens group.

[0313] For example, the first lens group G21 includes three lenses, namely the fourth lens L4, the fifth lens L5, and the sixth lens L6 arranged sequentially from the object side to the image side. The first lens group G21 is a movable lens group, which can move along its optical axis.

[0314] For example, the third lens group G23 includes two lenses, namely the seventh lens L7 and the eighth lens L8, arranged sequentially from the object side to the image side. The third lens group G23 is a fixed lens group.

[0315] In this embodiment, the first lens L1, the optical path folding element G12, and the second lens L2 are relatively fixed, and the three can rotate together to achieve image stabilization of the optical lens 1. Therefore, through the cooperation of the first lens L1, the optical path folding element G12, and the second lens L2, the optical lens 1 has strong image stabilization capability, good image quality, and a small size. Furthermore, the first lens group G21 achieves focusing of the optical lens 1 by moving.

[0316] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the second lens group G22. There is no need to set up additional components to fold the optical path for the photosensitive element 2, which is beneficial to provide more space for other optical components, thereby improving the compactness of the camera module 30 and facilitating the miniaturization of the camera module 30.

[0317] In some embodiments, during the transition of the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 remains fixed, the first lens group G21 moves along the second direction toward the first optical element G1, and the positions of the second lens group G22 and the third lens group G23 remain fixed. That is, the distance between the first lens group G21 and the first optical element G1 decreases, so that the subject is imaged on the imaging plane, and the optical lens 1 can image objects at closer distances.

[0318] Please refer to Table 1a. Table 1a lists the surface type, radius of curvature Y, thickness, refractive index, Abbe number, refraction mode, and thickness in macro mode for each lens, light folding element (such as optical path turning element G12), and filter 3 of the camera module 30 shown in Figures 8 and 9. The thickness includes the thickness of the structure itself and the spacing between structures; 1E+18 (scientific notation) refers to infinity. Tables 1b and 1c show the aspherical coefficients of each lens of the optical lens 1 of the camera module 30 shown in Figures 8 and 9 in one possible embodiment.

[0319] Among them, odd-degree polynomial surfaces are a type of aspherical surface. The blank cells in the "Refraction Mode" column can each represent "Refraction". The data for the lens behind the prism is measured in terms of the refracted optical path.

[0320] Table 1a

[0321] Table 1b

[0322] Table 1c

[0323] The aspherical surfaces in optical lens 1 in Tables 1a, 1b and 1c can be defined using, but not limited to, the following aspherical curve equations:

[0324] Where z is a point on the aspherical surface at a distance r from the optical axis, and its relative distance to the tangent plane at the intersection point on the optical axis of the aspherical surface; r is the perpendicular distance between a point on the aspherical curve and the optical axis; c is the curvature; k is the conic coefficient; αi is the i-th order aspherical coefficient, which can be found in Table 1b. The first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, and the eighth lens L8 are all aspherical surfaces.

[0325] Please refer to Tables 1d and 1e. Table 1d contains the basic parameters of the camera module 30 shown in Figures 8 and 9, and Table 1e contains the relationship between the parameters in Table 1d.

[0326] In Table 1d, IMH is the image height of optical lens 1, EPD is the entrance pupil diameter of optical lens 1, EFL is the focal length of optical lens 1, F1 is the focal length of the first optical element G1, fl is the focal length of the second lens group G22, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 along the optical axis, ttl is the optical length, ttl1 is the total optical length, d is the maximum focusing distance of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. The values ​​of EFL, F1, fl, fn, and fm are all effective values, and the unit is millimeters.

[0327] Table 1d

[0328] Table 1e

[0329] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.13. Furthermore, the ratio of the focal length F1 of the first optical element G1 to the focal length EFL of the optical lens 1, F1 / EFL, is 1.92. In this case, the optical power of both the image-side and object-side surfaces of the first optical element G1 is fully utilized, and the first optical element G1 possesses suitable optical power. The relatively small F1 / EFL ratio improves the compactness of the optical lens 1, facilitating its miniaturization and maximizing its performance. This results in the optical lens 1 having strong image stabilization capabilities and a high degree of compactness.

[0330] In some embodiments, the ratio fm / EFL of the focal length fm of the first lens group G21 to the focal length EFL of the optical lens 1 is 0.79. In this case, the focal length fm of the first lens group G21 is appropriate, and the optical lens 1 has good imaging performance at both the telephoto and macro ends.

[0331] In some embodiments, the ratio dm / TTL of the axial thickness dm of the first lens group G21 in the optical axis direction to the optical length of the optical lens 1 is 0.19. In this case, the thickness of the first lens group G21 is thin, which is beneficial for the miniaturization of the optical lens 1.

[0332] In some embodiments, the ratio of the total optical length TTL1 to the image height IMH of the optical lens 1, TTL1 / IMH, is 1.82. In this case, the optical lens 1 has both a large image height and a small length.

[0333] In some embodiments, the ratio of the total optical length TTL1 to the entrance pupil diameter EPD of the optical lens 1, TTL1 / EPD, is 2.77. In this case, the optical lens 1 has a smaller length dimension and a larger amount of light entering the lens.

[0334] In some embodiments, the ratio of the total optical length TTL1 of the optical lens 1 to the focal length EFL of the optical lens 1, TTL1 / EFL, is 1.14. In this case, the optical lens 1 makes full use of the length space and has a high degree of compactness.

[0335] In some embodiments, the ratio d / EFL of the maximum focusing distance d of the first lens group G21 to the focal length EFL of the optical lens 1 is 0.12.

[0336] In some embodiments, the ratio fa / EFL of the focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 is 0.84. In this case, the optical lens 1 has strong image stabilization capability and a small size.

[0337] In some embodiments, the ratio of the focal length fb of the second lens L2 to the focal length EFL of the optical lens 1, fb / EFL, is -1.10. In this case, the optical lens 1 has strong image stabilization capabilities.

[0338] In some embodiments, the ratio fa / fb of the focal length fa of the first lens L1 to the focal length fb of the second lens is -0.771. In this case, the first optical element G1 has strong image stabilization capability and reduces the aberration of the optical lens 1, that is, the optical lens 1 has strong image stabilization capability.

[0339] Please refer to Figures 10 and 11. Figure 10 is an axial chromatic aberration diagram of the camera module 30 shown in Figure 8, and Figure 11 is a distortion diagram of the camera module 30 shown in Figure 8.

[0340] Figure 10 shows axial chromatic aberration curves corresponding to different wavelengths of the system (650nm, 610nm, 555nm, 510nm, 470nm, and 435nm). Physically, this represents the deviation of light of the corresponding wavelength emitted at a 0-degree field of view from the ideal image point after passing through the optical system. The horizontal axis represents the deviation along the optical axis, and the vertical axis represents the normalized coordinates at the pupil. The values ​​shown in Figure 10 are all relatively small, indicating good correction of on-axis aberrations (spherical aberration, chromatic aberration, etc.) in optical lens 1.

[0341] The distortion diagram shown in Figure 11 is used to characterize the relative deviation between the beam convergence point (actual image height) and the ideal image height in different fields of view. In the distortion diagram shown in Figure 11, the relative deviation is within 1%, which ensures that there is no obvious distortion in the image.

[0342] Example 2:

[0343] Please refer to Figures 12 and 13. Figure 12 is a structural schematic diagram of the camera module 30 shown in Figure 5 at the telephoto end in Embodiment 2, and Figure 13 is a structural schematic diagram of the camera module 30 shown in Figure 5 at the macro end in Embodiment 2.

[0344] In some embodiments, the camera module 30 may include an optical lens 1, a photosensitive element 2, and a filter 3, with light passing sequentially through the optical lens 1 and the filter 3 to the photosensitive element 2 for imaging. The optical lens 1 includes a first optical element G1 and a second optical element G2, with the second optical element G2 located on the image side of the first optical element G1.

[0345] The first optical element G1 includes a front lens group G11, an optical path deflection element G12, and a rear lens group G13.

[0346] For example, the front lens group G11 may include a lens, namely the first lens L1. The optical path reversing element G12 may be a prism, which is used to change the optical axis from a first direction to a second direction. The rear lens group G13 may include a lens, namely the second lens L2.

[0347] For example, the first lens L1, the optical path reversing element G12, and the second lens L2 have the same refractive index. Therefore, the first lens L1 and the second lens L2 can be fixedly connected to the optical path reversing element G12 by adhesive. The first lens L1, the optical path reversing element G12, and the second lens L2 can also be formed into a single component by integral molding.

[0348] For example, the first lens L1 has positive optical power, and the second lens L2 has negative optical power. The object-side surface of the first lens L1 is convex, and the image-side surface of the second lens L2 is concave.

[0349] The second optical element G2 includes a first lens group G21, a second lens group G22, and a third lens group G23. The second lens group G22, the first lens group G21, and the third lens group G23 are arranged sequentially from the object side to the image side.

[0350] For example, the second lens group G22 includes a lens, namely the third lens L3. The second lens group G22 is a fixed lens group.

[0351] For example, the first lens group G21 includes three lenses, namely the fourth lens L4, the fifth lens L5, and the sixth lens L6 arranged sequentially from the object side to the image side. The first lens group G21 is a movable lens group, which can move along its optical axis.

[0352] For example, the third lens group G23 includes three lenses, namely the seventh lens L7, the eighth lens L8, and the ninth lens L9 arranged sequentially from the object side to the image side. The third lens group G23 is a fixed lens group.

[0353] In this embodiment, the first lens L1, the optical path folding element G12, and the second lens L2 are relatively fixed, and the three can rotate together to achieve image stabilization of the optical lens 1. Therefore, through the cooperation of the first lens L1, the optical path folding element G12, and the second lens L2, the optical lens 1 has strong image stabilization capability, good image quality, and a small size. Furthermore, the first lens group G21 achieves focusing of the optical lens 1 by moving.

[0354] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the second lens group G22. There is no need to set up additional components to fold the optical path for the photosensitive element 2, which is beneficial to provide more space for other optical components, thereby improving the compactness of the camera module 30 and facilitating the miniaturization of the camera module 30.

[0355] In some embodiments, during the transition of the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 remains fixed, the first lens group G21 moves along the second direction toward the first optical element G1, and the positions of the second lens group G22 and the third lens group G23 remain fixed. That is, the distance between the first lens group G21 and the first optical element G1 decreases, so that the subject is imaged on the imaging plane, and the optical lens 1 can image objects at closer distances.

[0356] Please refer to Table 2a. Table 2a lists the surface type, radius of curvature Y, thickness, refractive index, Abbe number, refraction mode, and thickness in macro mode for each lens, light folding element, and filter 3 of the camera module 30 shown in Figures 12 and 13. The thickness includes the thickness of the structure itself and the spacing between structures; 1E+18 (scientific notation) refers to infinity. Tables 2b and 2c show the aspherical coefficients of each lens of the optical lens 1 of the camera module 30 shown in Figures 12 and 13 in one possible embodiment.

[0357] Among them, odd-degree polynomial surfaces are a type of aspherical surface. The blank cells in the "Refraction Mode" column can each represent "Refraction". The data for the lens behind the prism is measured in terms of the refracted optical path.

[0358] Table 2a

[0359] Table 2b

[0360] Table 2c

[0361] The aspherical surfaces in optical lens 1 in Tables 2a, 2b and 2c can be defined using, but are not limited to, the following aspherical curve equations:

[0362] Where z is a point on the aspherical surface at a distance r from the optical axis, and its relative distance to the tangent plane at the intersection point on the optical axis of the aspherical surface; r is the perpendicular distance between a point on the aspherical curve and the optical axis; c is the curvature; k is the conic coefficient; αi is the i-th order aspherical coefficient, which can be found in Table 2b. The lenses are: first lens L1, second lens L2, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, seventh lens L7, eighth lens L8, and ninth lens L9.

[0363] Please refer to Tables 2d and 2e. Table 2d contains the basic parameters of the camera module 30 shown in Figures 12 and 13, and Table 2e contains the relationship between the parameters in Table 2d.

[0364] In Table 2d, IMH is the image height of optical lens 1, EPD is the entrance pupil diameter of optical lens 1, EFL is the focal length of optical lens 1, F1 is the focal length of the first optical element G1, fl is the focal length of the second lens group G22, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 along the optical axis, ttl is the optical length, ttl1 is the total optical length, d is the maximum focusing distance of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. The values ​​of EFL, F1, fl, fn, and fm are all effective values, and the unit is millimeters.

[0365] Table 2d

[0366] Table 2e

[0367] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.18. Furthermore, the ratio of the focal length F1 of the first optical element G1 to the focal length EFL of the optical lens 1, F1 / EFL, is 2.35. In this case, the optical power of both the image-side and object-side surfaces of the first optical element G1 is fully utilized, and the first optical element G1 possesses suitable optical power. The relatively small F1 / EFL ratio improves the compactness of the optical lens 1, facilitating its miniaturization and maximizing its performance. This results in the optical lens 1 having strong image stabilization capabilities and a high degree of compactness.

[0368] In some embodiments, the ratio of the focal length fm of the first lens group G21 to the focal length EFL of the optical lens 1, fm / EFL, is 0.48. In this case, the focal length fm of the first lens group G21 is appropriate, and the optical lens 1 produces good imaging results at both the telephoto and macro ends.

[0369] In some embodiments, the ratio dm / TTL of the axial thickness dm of the first lens group G21 in the optical axis direction to the optical length of the optical lens 1 is 0.15. In this case, the thickness of the first lens group G21 is thin, which is beneficial for the miniaturization of the optical lens 1.

[0370] In some embodiments, the ratio of the total optical length TTL1 to the image height IMH of the optical lens 1, TTL1 / IMH, is 1.91. In this case, the optical lens 1 has both a large image height and a small length.

[0371] In some embodiments, the ratio of the total optical length TTL1 to the entrance pupil diameter EPD of the optical lens 1, TTL1 / EPD, is 2.56. In this case, the optical lens 1 has a smaller length dimension and a larger amount of light entering the lens.

[0372] In some embodiments, the ratio of the total optical length TTL1 of the optical lens 1 to the focal length EFL of the optical lens 1, TTL1 / EFL, is 1.19. In this case, the optical lens 1 makes full use of the length space and has a high degree of compactness.

[0373] In some embodiments, the ratio d / EFL of the maximum focusing distance d of the first lens group G21 to the focal length EFL of the optical lens 1 is 0.08.

[0374] In some embodiments, the ratio fa / EFL of the focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 is 1.1. In this case, the optical lens 1 has strong image stabilization capability and a small size.

[0375] In some embodiments, the ratio of the focal length fb of the second lens L2 to the focal length EFL of the optical lens 1, fb / EFL, is -1.57. In this case, the optical lens 1 has strong image stabilization capabilities.

[0376] In some embodiments, the ratio fa / fb of the focal length fa of the first lens L1 to the focal length fb of the second lens is -0.702. In this case, the first optical element G1 has strong image stabilization capability and reduces the aberration of the optical lens 1, that is, the optical lens 1 has strong image stabilization capability.

[0377] Please refer to Figures 14 and 15. Figure 14 is an axial chromatic aberration diagram of the camera module 30 shown in Figure 12, and Figure 15 is a distortion diagram of the camera module 30 shown in Figure 12.

[0378] Figure 14 shows axial chromatic aberration curves corresponding to different wavelengths of the system (650nm, 610nm, 555nm, 510nm, 470nm, and 435nm). Physically, it represents the deviation of light of the corresponding wavelength emitted at a 0-degree field of view from the ideal image point after passing through the optical system. The horizontal axis represents the deviation along the optical axis, and the vertical axis represents the normalized coordinates at the pupil. The values ​​shown in Figure 14 are all relatively small, indicating good correction of on-axis aberrations (spherical aberration, chromatic aberration, etc.) in optical lens 1.

[0379] The distortion diagram shown in Figure 15 is used to characterize the relative deviation between the beam convergence point (actual image height) and the ideal image height in different fields of view. In the distortion diagram shown in Figure 15, the relative deviation is within 2%, which ensures that there is no obvious distortion in the image.

[0380] Example 3

[0381] Please refer to Figures 16 and 17. Figure 16 is a structural schematic diagram of the camera module 30 shown in Figure 5 at the telephoto end in Embodiment 3, and Figure 17 is a structural schematic diagram of the camera module 30 shown in Figure 5 at the macro end in Embodiment 3.

[0382] In some embodiments, the camera module 30 may include an optical lens 1, a photosensitive element 2, and a filter 3, with light passing sequentially through the optical lens 1 and the filter 3 to the photosensitive element 2 for imaging. The optical lens 1 includes a first optical element G1 and a second optical element G2, with the second optical element G2 located on the image side of the first optical element G1.

[0383] The first optical element G1 includes a front lens group G11, an optical path deflection element G12, and a rear lens group G13.

[0384] For example, the front lens group G11 may include a lens, namely the first lens L1. The optical path reversing element G12 may be a prism, which is used to change the optical axis from a first direction to a second direction. The rear lens group G13 may include a lens, namely the second lens L2.

[0385] For example, the first lens L1, the optical path reversing element G12, and the second lens L2 have different refractive indices. Therefore, the first lens L1 and the second lens L2 can be fixedly connected to the optical path reversing element G12 by adhesive. The first lens L1, the optical path reversing element G12, and the second lens L2 can also be connected by a fastener to form an integral component.

[0386] For example, the first lens L1 has positive optical power, and the second lens L2 has negative optical power. The object-side surface of the first lens L1 is convex, and the image-side surface of the second lens L2 is concave.

[0387] The second optical element G2 includes a first lens group G21, a second lens group G22, and a third lens group G23. The second lens group G22, the first lens group G21, and the third lens group G23 are arranged sequentially from the object side to the image side.

[0388] For example, the second lens group G22 includes a lens, namely the third lens L3. The second lens group G22 is a fixed lens group.

[0389] For example, the first lens group G21 includes three lenses, namely the fourth lens L4, the fifth lens L5, and the sixth lens L6 arranged sequentially from the object side to the image side. The first lens group G21 is a movable lens group, which can move along its optical axis.

[0390] For example, the third lens group G23 includes two lenses, namely the seventh lens L7 and the eighth lens L8, arranged sequentially from the object side to the image side. The third lens group G23 is a fixed lens group.

[0391] In this embodiment, the first lens L1, the optical path folding element G12, and the second lens L2 are relatively fixed, and the three can rotate together to achieve image stabilization of the optical lens 1. Therefore, through the cooperation of the first lens L1, the optical path folding element G12, and the second lens L2, the optical lens 1 has strong image stabilization capability, good image quality, and a small size. Furthermore, the first lens group G21 achieves focusing of the optical lens 1 by moving.

[0392] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the second lens group G22. There is no need to set up additional components to fold the optical path for the photosensitive element 2, which is beneficial to provide more space for other optical components, thereby improving the compactness of the camera module 30 and facilitating the miniaturization of the camera module 30.

[0393] In some embodiments, during the transition of the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 remains fixed, the first lens group G21 moves along the second direction toward the first optical element G1, and the positions of the second lens group G22 and the third lens group G23 remain fixed. That is, the distance between the first lens group G21 and the first optical element G1 decreases, so that the subject is imaged on the imaging plane, and the optical lens 1 can image objects at closer distances.

[0394] Please refer to Table 3a. Table 3a lists the surface type, radius of curvature Y, thickness, refractive index, Abbe number, refraction mode, and thickness in macro mode for each lens, light folding element, and filter 3 of the camera module 30 shown in Figures 16 and 17. The thickness includes the thickness of the structure itself and the spacing between structures; 1E+18 (scientific notation) refers to infinity. Tables 3b and 3c show the aspherical coefficients of each lens 1 of the optical lens 1 of the camera module 30 shown in Figures 16 and 17 in one possible embodiment.

[0395] Among them, odd-degree polynomial surfaces are a type of aspherical surface. The blank cells in the "Refraction Mode" column can each represent "Refraction". The data for the lens behind the prism is measured in terms of the refracted optical path.

[0396] Table 3a

[0397] Table 3b

[0398] Table 3c

[0399] The aspherical surfaces in optical lens 1 in Tables 3a, 3b and 3c can be defined using, but not limited to, the following aspherical curve equations:

[0400] Where z is a point on the aspherical surface at a distance r from the optical axis, and its relative distance to the tangent plane at the intersection point on the optical axis of the aspherical surface; r is the perpendicular distance between a point on the aspherical curve and the optical axis; c is the curvature; k is the conic coefficient; αi is the i-th order aspherical coefficient, which can be found in Table 3b. The first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, and the eighth lens L8 are all aspherical surfaces.

[0401] Please refer to Tables 3d and 3e. Table 3d contains the basic parameters of the camera module 30 shown in Figures 16 and 17, and Table 3e contains the relationship between the parameters in Table 3d.

[0402] In Table 1d, IMH is the image height of optical lens 1, EPD is the entrance pupil diameter of optical lens 1, EFL is the focal length of optical lens 1, F1 is the focal length of the first optical element G1, fl is the focal length of the second lens group G22, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 along the optical axis, ttl is the optical length, ttl1 is the total optical length, d is the maximum focusing distance of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. The values ​​of EFL, F1, fl, fn, and fm are all effective values, and the unit is millimeters.

[0403] Table 3d

[0404] Table 3e

[0405] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.1. Furthermore, the ratio of the focal length F1 of the first optical element G1 to the focal length EFL of the optical lens 1, F1 / EFL, is 2.07. In this case, the optical power of both the image-side and object-side surfaces of the first optical element G1 is fully utilized, and the first optical element G1 possesses suitable optical power. The relatively small F1 / EFL ratio improves the compactness of the optical lens 1, facilitating its miniaturization and maximizing its performance. This results in the optical lens 1 having strong image stabilization capabilities and a high degree of compactness.

[0406] In some embodiments, the ratio of the focal length fm of the first lens group G21 to the focal length EFL of the optical lens 1, fm / EFL, is 0.75. In this case, the focal length fm of the first lens group G21 is appropriate, and the optical lens 1 produces good imaging results at both the telephoto and macro ends.

[0407] In some embodiments, the ratio dm / TTL of the axial thickness dm of the first lens group G21 in the optical axis direction to the optical length of the optical lens 1 is 0.16. In this case, the thickness of the first lens group G21 is thin, which is beneficial for the miniaturization of the optical lens 1.

[0408] In some embodiments, the ratio of the total optical length TTL1 to the image height IMH of the optical lens 1, TTL1 / IMH, is 1.78. In this case, the optical lens 1 has both a large image height and a small length.

[0409] In some embodiments, the ratio of the total optical length TTL1 to the entrance pupil diameter EPD of the optical lens 1, TTL1 / EPD, is 2.73. In this case, the optical lens 1 has a smaller length dimension and a larger amount of light entering the lens.

[0410] In some embodiments, the ratio of the total optical length TTL1 of the optical lens 1 to the focal length EFL of the optical lens 1, TTL1 / EFL, is 1.12. In this case, the optical lens 1 makes full use of the length space and has a high degree of compactness.

[0411] In some embodiments, the ratio d / EFL of the maximum focusing distance d of the first lens group G21 to the focal length EFL of the optical lens 1 is 0.1.

[0412] In some embodiments, the ratio fa / EFL of the focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 is 0.84. In this case, the optical lens 1 has strong image stabilization capability and a small size.

[0413] In some embodiments, the ratio of the focal length fb of the second lens L2 to the focal length EFL of the optical lens 1, fb / EFL, is -1.03. In this case, the optical lens 1 has strong image stabilization capabilities.

[0414] In some embodiments, the ratio fa / fb of the focal length fa of the first lens L1 to the focal length fb of the second lens is -0.814. In this case, the first optical element G1 has strong image stabilization capability and reduces the aberrations of the optical lens 1, that is, the optical lens 1 has strong image stabilization capability.

[0415] Please refer to Figures 18 and 19. Figure 18 is an axial chromatic aberration diagram of the camera module 30 shown in Figure 16, and Figure 19 is a distortion diagram of the camera module 30 shown in Figure 16.

[0416] Figure 18 shows axial chromatic aberration curves corresponding to different wavelengths of the system (650nm, 610nm, 555nm, 510nm, 470nm, and 435nm). Physically, it represents the deviation of light of the corresponding wavelength emitted at a 0-degree field of view from the ideal image point after passing through the optical system. The horizontal axis represents the deviation along the optical axis, and the vertical axis represents the normalized coordinates at the pupil. The values ​​shown in Figure 18 are all relatively small, indicating good correction of on-axis aberrations (spherical aberration, chromatic aberration, etc.) in optical lens 1.

[0417] The distortion diagram shown in Figure 19 is used to characterize the relative deviation between the beam convergence point (actual image height) and the ideal image height in different fields of view. In the distortion diagram shown in Figure 19, the relative deviation is within 1%, which ensures that there is no obvious distortion in the image.

[0418] Example 4

[0419] Please refer to Figures 20 and 21. Figure 20 is a structural schematic diagram of the camera module 30 shown in Figure 5 at the telephoto end in Embodiment 4, and Figure 21 is a structural schematic diagram of the camera module 30 shown in Figure 5 at the macro end in Embodiment 4.

[0420] In some embodiments, the camera module 30 may include an optical lens 1, a photosensitive element 2, and a filter 3, with light passing sequentially through the optical lens 1 and the filter 3 to the photosensitive element 2 for imaging. The optical lens 1 includes a first optical element G1 and a second optical element G2, with the second optical element G2 located on the image side of the first optical element G1.

[0421] The first optical element G1 includes a front lens group G11, an optical path deflection element G12, and a rear lens group G13.

[0422] For example, the front lens group G11 may include a lens, namely the first lens L1. The optical path reversing element G12 may be a prism, which is used to change the optical axis from a first direction to a second direction. The rear lens group G13 may include a lens, namely the second lens L2.

[0423] For example, the first lens L1, the optical path reversing element G12, and the second lens L2 have different refractive indices. Therefore, the first lens L1 and the second lens L2 can be fixedly connected to the optical path reversing element G12 by adhesive. The first lens L1, the optical path reversing element G12, and the second lens L2 can also be connected by a fastener to form an integral component.

[0424] For example, the first lens L1 has positive optical power, and the second lens L2 has negative optical power. The object-side surface of the first lens L1 is convex, and the image-side surface of the second lens L2 is concave.

[0425] The second optical element G2 includes a first lens group G21, a second lens group G22, and a third lens group G23. The second lens group G22, the first lens group G21, and the third lens group G23 are arranged sequentially from the object side to the image side.

[0426] For example, the second lens group G22 includes a lens, namely the third lens L3. The second lens group G22 is a fixed lens group.

[0427] For example, the first lens group G21 includes three lenses, namely the fourth lens L4, the fifth lens L5, and the sixth lens L6 arranged sequentially from the object side to the image side. The first lens group G21 is a movable lens group, which can move along its optical axis.

[0428] For example, the third lens group G23 includes two lenses, namely the seventh lens L7 and the eighth lens L8, arranged sequentially from the object side to the image side. The third lens group G23 is a fixed lens group.

[0429] In this embodiment, the first lens L1, the optical path folding element G12, and the second lens L2 are relatively fixed, and the three can rotate together to achieve image stabilization of the optical lens 1. Therefore, through the cooperation of the first lens L1, the optical path folding element G12, and the second lens L2, the optical lens 1 has strong image stabilization capability, good image quality, and a small size. Furthermore, the first lens group G21 achieves focusing of the optical lens 1 by moving.

[0430] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the second lens group G22. There is no need to set up additional components to fold the optical path for the photosensitive element 2, which is beneficial to provide more space for other optical components, thereby improving the compactness of the camera module 30 and facilitating the miniaturization of the camera module 30.

[0431] In some embodiments, during the transition of the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 remains fixed, the first lens group G21 moves along the second direction toward the first optical element G1, and the positions of the second lens group G22 and the third lens group G23 remain fixed. That is, the distance between the first lens group G21 and the first optical element G1 decreases, so that the subject is imaged on the imaging plane, and the optical lens 1 can image objects at closer distances.

[0432] Please refer to Table 4a. Table 4a lists the surface type, radius of curvature Y, thickness, refractive index, Abbe number, refraction mode, and thickness in macro mode for each lens, light folding element, and filter 3 of the camera module 30 shown in Figures 20 and 21. The thickness includes the thickness of the structure itself and the spacing between structures; 1E+18 (scientific notation) refers to infinity. Tables 4b and 4c show the aspherical coefficients of each lens 1 of the optical lens 1 of the camera module 30 shown in Figures 20 and 21 in one possible embodiment.

[0433] Among them, odd-degree polynomial surfaces are a type of aspherical surface. The blank cells in the "Refraction Mode" column can each represent "Refraction". The data for the lens behind the prism is measured in terms of the refracted optical path.

[0434] Table 4a

[0435] Table 4b

[0436] Table 4c

[0437] The aspherical surfaces in optical lens 1 in Tables 4a, 4b and 4c can be defined using, but are not limited to, the following aspherical curve equations:

[0438] Where z is a point on the aspherical surface at a distance r from the optical axis, and its relative distance to the tangent plane at the intersection point on the optical axis of the aspherical surface; r is the perpendicular distance between a point on the aspherical curve and the optical axis; c is the curvature; k is the conic coefficient; αi is the i-th order aspherical coefficient, which can be found in Table 4b. The first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, and the eighth lens L8 are all aspherical surfaces.

[0439] Please refer to Tables 4d and 4e. Table 4d contains the basic parameters of the camera module 30 shown in Figures 20 and 21, and Table 4e contains the relationship between the parameters in Table 4d.

[0440] In Table 4d, IMH is the image height of optical lens 1, EPD is the entrance pupil diameter of optical lens 1, EFL is the focal length of optical lens 1, F1 is the focal length of the first optical element G1, fl is the focal length of the second lens group G22, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 along the optical axis, ttl is the optical length, ttl1 is the total optical length, d is the maximum focusing distance of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. The values ​​of EFL, F1, fl, fn, and fm are all effective values, and the unit is millimeters.

[0441] Table 4d

[0442] Table 4e

[0443] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.22. Furthermore, the ratio of the focal length F1 of the first optical element G1 to the focal length EFL of the optical lens 1, F1 / EFL, is 1.73. In this case, the optical power of both the image-side and object-side surfaces of the first optical element G1 is fully utilized, and the first optical element G1 possesses suitable optical power. The relatively small F1 / EFL ratio improves the compactness of the optical lens 1, facilitating its miniaturization and maximizing its performance. This results in the optical lens 1 having strong image stabilization capabilities and a high degree of compactness.

[0444] In some embodiments, the ratio of the focal length fm of the first lens group G21 to the focal length EFL of the optical lens 1, fm / EFL, is 0.65. In this case, the focal length fm of the first lens group G21 is appropriate, and the optical lens 1 produces good imaging results at both the telephoto and macro ends.

[0445] In some embodiments, the ratio dm / TTL of the axial thickness dm of the first lens group G21 in the optical axis direction to the optical length of the optical lens 1 is 0.16. In this case, the thickness of the first lens group G21 is thin, which is beneficial for the miniaturization of the optical lens 1.

[0446] In some embodiments, the ratio of the total optical length TTL1 to the image height IMH of the optical lens 1, TTL1 / IMH, is 1.81. In this case, the optical lens 1 has both a large image height and a small length.

[0447] In some embodiments, the ratio of the total optical length TTL1 to the entrance pupil diameter EPD of the optical lens 1, TTL1 / EPD, is 2.62. In this case, the optical lens 1 has a smaller length dimension and a larger amount of light entering the lens.

[0448] In some embodiments, the ratio of the total optical length TTL1 of the optical lens 1 to the focal length EFL of the optical lens 1, TTL1 / EFL, is 1.14. In this case, the optical lens 1 makes full use of the length space and has a high degree of compactness.

[0449] In some embodiments, the ratio d / EFL of the maximum focusing distance d of the first lens group G21 to the focal length EFL of the optical lens 1 is 0.13.

[0450] In some embodiments, the ratio fa / EFL of the focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 is 0.86. In this case, the optical lens 1 has strong image stabilization capability and a small size.

[0451] In some embodiments, the ratio of the focal length fb of the second lens L2 to the focal length EFL of the optical lens 1, fb / EFL, is -1.18. In this case, the optical lens 1 has strong image stabilization capabilities.

[0452] In some embodiments, the ratio fa / fb of the focal length fa of the first lens L1 to the focal length fb of the second lens is -0.731. In this case, the first optical element G1 has strong image stabilization capability and reduces the aberrations of the optical lens 1, that is, the optical lens 1 has strong image stabilization capability.

[0453] Please refer to Figures 22 and 23. Figure 22 is an axial chromatic aberration diagram of the camera module 30 shown in Figure 20, and Figure 23 is a distortion diagram of the camera module 30 shown in Figure 20.

[0454] Figure 22 shows axial chromatic aberration curves corresponding to different wavelengths of the system (650nm, 610nm, 555nm, 510nm, 470nm, and 435nm). Physically, it represents the deviation of light of the corresponding wavelength emitted at a 0-degree field of view from the ideal image point after passing through the optical system. The horizontal axis represents the deviation along the optical axis, and the vertical axis represents the normalized coordinates at the pupil. The values ​​shown in Figure 22 are all relatively small, indicating good correction of on-axis aberrations (spherical aberration, chromatic aberration, etc.) in optical lens 1.

[0455] The distortion diagram shown in Figure 23 is used to characterize the relative deviation between the beam convergence point (actual image height) and the ideal image height in different fields of view. In the distortion diagram shown in Figure 23, the relative deviation is within 2%, which ensures that there is no obvious distortion in the image.

[0456] Example 5

[0457] Please refer to Figures 24 and 25. Figure 24 is a structural schematic diagram of the camera module 30 shown in Figure 5 at the telephoto end in Embodiment 5, and Figure 25 is a structural schematic diagram of the camera module 30 shown in Figure 5 at the macro end in Embodiment 5.

[0458] In some embodiments, the camera module 30 may include an optical lens 1, a photosensitive element 2, and a filter 3, with light passing sequentially through the optical lens 1 and the filter 3 to the photosensitive element 2 for imaging. The optical lens 1 includes a first optical element G1 and a second optical element G2, with the second optical element G2 located on the image side of the first optical element G1.

[0459] The first optical element G1 includes a front lens group G11, an optical path deflection element G12, and a rear lens group G13.

[0460] For example, the front lens group G11 may include a lens, namely the first lens L1. The optical path reversing element G12 may be a prism, which is used to change the optical axis from a first direction to a second direction. The rear lens group G13 may include a lens, namely the second lens L2.

[0461] For example, the first lens L1, the optical path reversing element G12, and the second lens L2 have different refractive indices. Therefore, the first lens L1 and the second lens L2 can be fixedly connected to the optical path reversing element G12 by adhesive. The first lens L1, the optical path reversing element G12, and the second lens L2 can also be connected by a fastener to form an integral component.

[0462] For example, the first lens L1 has positive optical power, and the second lens L2 has negative optical power. The object-side surface of the first lens L1 is convex, and the image-side surface of the second lens L2 is concave.

[0463] The second optical element G2 includes a first lens group G21, a second lens group G22, and a third lens group G23. The second lens group G22, the first lens group G21, and the third lens group G23 are arranged sequentially from the object side to the image side.

[0464] For example, the second lens group G22 includes a lens, namely the third lens L3. The second lens group G22 is a fixed lens group.

[0465] For example, the first lens group G21 includes three lenses, namely the fourth lens L4, the fifth lens L5, and the sixth lens L6 arranged sequentially from the object side to the image side. The first lens group G21 is a movable lens group, which can move along its optical axis.

[0466] For example, the third lens group G23 includes two lenses, namely the seventh lens L7 and the eighth lens L8, arranged sequentially from the object side to the image side. The third lens group G23 is a fixed lens group.

[0467] In this embodiment, the first lens L1, the optical path folding element G12, and the second lens L2 are relatively fixed, and the three can rotate together to achieve image stabilization of the optical lens 1. Therefore, through the cooperation of the first lens L1, the optical path folding element G12, and the second lens L2, the optical lens 1 has strong image stabilization capability, good image quality, and a small size. Furthermore, the first lens group G21 achieves focusing of the optical lens 1 by moving.

[0468] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the second lens group G22. There is no need to set up additional components to fold the optical path for the photosensitive element 2, which is beneficial to provide more space for other optical components, thereby improving the compactness of the camera module 30 and facilitating the miniaturization of the camera module 30.

[0469] In some embodiments, during the transition of the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 remains fixed, the first lens group G21 moves along the second direction toward the first optical element G1, and the positions of the second lens group G22 and the third lens group G23 remain fixed. That is, the distance between the first lens group G21 and the first optical element G1 decreases, so that the subject is imaged on the imaging plane, and the optical lens 1 can image objects at closer distances.

[0470] Please refer to Table 5a. Table 5a lists the surface type, radius of curvature Y, thickness, refractive index, Abbe number, refraction mode, and thickness in macro mode for each lens, light folding element, and filter 3 of the camera module 30 shown in Figures 24 and 25. The thickness includes the thickness of the structure itself and the spacing between structures; 1E+18 (scientific notation) refers to infinity. Tables 5b and 5c show the aspherical coefficients of each lens 1 of the optical lens 1 of the camera module 30 shown in Figures 24 and 25 in one possible embodiment.

[0471] Among them, odd-degree polynomial surfaces are a type of aspherical surface. The blank cells in the "Refraction Mode" column can each represent "Refraction". The data for the lens behind the prism is measured in terms of the refracted optical path.

[0472] Table 5a

[0473] Table 5b

[0474] Table 5c

[0475] The aspherical surfaces in optical lens 1 in Tables 5a, 5b and 5c can be defined using, but not limited to, the following aspherical curve equations:

[0476] Where z is a point on the aspherical surface at a distance r from the optical axis, and its relative distance to the tangent plane at the intersection point on the optical axis of the aspherical surface; r is the perpendicular distance between a point on the aspherical curve and the optical axis; c is the curvature; k is the conic coefficient; αi is the i-th order aspherical coefficient, which can be found in Table 5b. The first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, and the eighth lens L8 are all aspherical surfaces.

[0477] Please refer to Tables 5d and 5e. Table 5d contains the basic parameters of the camera module 30 shown in Figures 24 and 25, and Table 5e contains the relationship between the parameters in Table 5d.

[0478] In Table 5d, IMH is the image height of optical lens 1, EPD is the entrance pupil diameter of optical lens 1, EFL is the focal length of optical lens 1, F1 is the focal length of the first optical element G1, fl is the focal length of the second lens group G22, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 along the optical axis, ttl is the optical length, ttl1 is the total optical length, d is the maximum focusing distance of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. The values ​​of EFL, F1, fl, fn, and fm are all effective values, and the unit is millimeters.

[0479] Table 5d

[0480] Table 5e

[0481] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.08. Furthermore, the ratio of the focal length F1 of the first optical element G1 to the focal length EFL of the optical lens 1, F1 / EFL, is 1.59. In this case, the optical power of both the image-side and object-side surfaces of the first optical element G1 is fully utilized, and the first optical element G1 possesses suitable optical power. The relatively small F1 / EFL ratio improves the compactness of the optical lens 1, facilitating its miniaturization and maximizing its performance. This results in the optical lens 1 having strong image stabilization capabilities and a high degree of compactness.

[0482] In some embodiments, the ratio of the focal length fm of the first lens group G21 to the focal length EFL of the optical lens 1, fm / EFL, is 0.69. In this case, the focal length fm of the first lens group G21 is appropriate, and the optical lens 1 produces good imaging results at both the telephoto and macro ends.

[0483] In some embodiments, the ratio dm / TTL of the axial thickness dm of the first lens group G21 in the optical axis direction to the optical length of the optical lens 1 is 0.17. In this case, the thickness of the first lens group G21 is thin, which is beneficial for the miniaturization of the optical lens 1.

[0484] In some embodiments, the ratio of the total optical length TTL1 to the image height IMH of the optical lens 1, TTL1 / IMH, is 1.74. In this case, the optical lens 1 has both a large image height and a small length.

[0485] In some embodiments, the ratio of the total optical length TTL1 to the entrance pupil diameter EPD of the optical lens 1, TTL1 / EPD, is 2.69. In this case, the optical lens 1 has a smaller length dimension and a larger amount of light entering the lens.

[0486] In some embodiments, the ratio of the total optical length TTL1 of the optical lens 1 to the focal length EFL of the optical lens 1, TTL1 / EFL, is 1.09. In this case, the optical lens 1 makes full use of the length space and has a high degree of compactness.

[0487] In some embodiments, the ratio d / EFL of the maximum focusing distance d of the first lens group G21 to the focal length EFL of the optical lens 1 is 0.13.

[0488] In some embodiments, the ratio fa / EFL of the focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 is 0.79. In this case, the optical lens 1 has strong image stabilization capability and a small size.

[0489] In some embodiments, the ratio of the focal length fb of the second lens L2 to the focal length EFL of the optical lens 1, fb / EFL, is -1.06. In this case, the optical lens 1 has strong image stabilization capabilities.

[0490] In some embodiments, the ratio fa / fb of the focal length fa of the first lens L1 to the focal length fb of the second lens is -0.745. In this case, the first optical element G1 has strong image stabilization capability and reduces the aberrations of the optical lens 1, that is, the optical lens 1 has strong image stabilization capability.

[0491] Please refer to Figures 26 and 27. Figure 26 is an axial chromatic aberration diagram of the camera module 30 shown in Figure 24, and Figure 27 is a distortion diagram of the camera module 30 shown in Figure 24.

[0492] Figure 26 shows axial chromatic aberration curves corresponding to different wavelengths of the system (650nm, 610nm, 555nm, 510nm, 470nm, and 435nm). Physically, it represents the deviation of light of the corresponding wavelength emitted at a 0-degree field of view from the ideal image point after passing through the optical system. The horizontal axis represents the deviation along the optical axis, and the vertical axis represents the normalized coordinates at the pupil. The values ​​shown in Figure 26 are all relatively small, indicating good correction of on-axis aberrations (spherical aberration, chromatic aberration, etc.) in optical lens 1.

[0493] The distortion diagram shown in Figure 27 is used to characterize the relative deviation between the beam convergence point (actual image height) and the ideal image height in different fields of view. In the distortion diagram shown in Figure 27, the relative deviation is within 2%, which ensures that there is no obvious distortion in the image.

[0494] Example 6

[0495] Please refer to Figures 28 and 29. Figure 28 is a structural schematic diagram of the camera module 30 shown in Figure 5 at the telephoto end in Embodiment 6, and Figure 29 is a structural schematic diagram of the camera module 30 shown in Figure 5 at the macro end in Embodiment 6.

[0496] In some embodiments, the camera module 30 may include an optical lens 1, a photosensitive element 2, and a filter 3, with light passing sequentially through the optical lens 1 and the filter 3 to the photosensitive element 2 for imaging. The optical lens 1 includes a first optical element G1 and a second optical element G2, with the second optical element G2 located on the image side of the first optical element G1.

[0497] The first optical element G1 includes a front lens group G11, an optical path deflection element G12, and a rear lens group G13.

[0498] For example, the front lens group G11 may include a lens, namely the first lens L1. The optical path reversing element G12 may be a prism, which is used to change the optical axis from a first direction to a second direction. The rear lens group G13 may include a lens, namely the second lens L2.

[0499] For example, the first lens L1, the optical path reversing element G12, and the second lens L2 have different refractive indices. Therefore, the first lens L1 and the second lens L2 can be fixedly connected to the optical path reversing element G12 by adhesive. The first lens L1, the optical path reversing element G12, and the second lens L2 can also be connected by a fastener to form an integral component.

[0500] For example, the first lens L1 has positive optical power, and the second lens L2 has negative optical power. The object-side surface of the first lens L1 is convex, and the image-side surface of the second lens L2 is concave.

[0501] The second optical element G2 includes a first lens group G21, a second lens group G22, and a third lens group G23. The second lens group G22, the first lens group G21, and the third lens group G23 are arranged sequentially from the object side to the image side.

[0502] For example, the second lens group G22 includes a lens, namely the third lens L3. The second lens group G22 is a fixed lens group.

[0503] For example, the first lens group G21 includes three lenses, namely the fourth lens L4, the fifth lens L5, and the sixth lens L6 arranged sequentially from the object side to the image side. The first lens group G21 is a movable lens group, which can move along its optical axis.

[0504] For example, the third lens group G23 includes two lenses, namely the seventh lens L7 and the eighth lens L8, arranged sequentially from the object side to the image side. The third lens group G23 is a fixed lens group.

[0505] In this embodiment, the first lens L1, the optical path folding element G12, and the second lens L2 are relatively fixed, and the three can rotate together to achieve image stabilization of the optical lens 1. Therefore, through the cooperation of the first lens L1, the optical path folding element G12, and the second lens L2, the optical lens 1 has strong image stabilization capability, good image quality, and a small size. Furthermore, the first lens group G21 achieves focusing of the optical lens 1 by moving.

[0506] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the second lens group G22. There is no need to set up additional components to fold the optical path for the photosensitive element 2, which is beneficial to provide more space for other optical components, thereby improving the compactness of the camera module 30 and facilitating the miniaturization of the camera module 30.

[0507] In some embodiments, during the transition of the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 remains fixed, the first lens group G21 moves along the second direction toward the first optical element G1, and the positions of the second lens group G22 and the third lens group G23 remain fixed. That is, the distance between the first lens group G21 and the first optical element G1 decreases, so that the subject is imaged on the imaging plane, and the optical lens 1 can image objects at closer distances.

[0508] Please refer to Table 6a, which lists the surface type, radius of curvature Y, thickness, refractive index, Abbe number, refraction mode, and thickness in macro mode for each lens, light folding element, and filter 3 of the camera module 30 shown in Figures 28 and 29. The thickness includes the thickness of the structure itself and the spacing between structures; 1E+18 (scientific notation) refers to infinity. Tables 6b and 6c show the aspherical coefficients of each lens 1 of the optical lens 1 of the camera module 30 shown in Figures 28 and 29 in one possible embodiment.

[0509] Among them, odd-degree polynomial surfaces are a type of aspherical surface. The blank cells in the "Refraction Mode" column can each represent "Refraction". The data for the lens behind the prism is measured in terms of the refracted optical path.

[0510] Table 6a

[0511] Table 6b

[0512] Table 6c

[0513] The aspherical surfaces in optical lens 1 in Tables 6a, 6b and 6c can be defined using, but not limited to, the following aspherical curve equations:

[0514] Where z is a point on the aspherical surface at a distance r from the optical axis, and its relative distance to the tangent plane at the intersection point on the optical axis of the aspherical surface; r is the perpendicular distance between a point on the aspherical curve and the optical axis; c is the curvature; k is the conic coefficient; αi is the i-th order aspherical coefficient, which can be found in Table 6b. The lenses are: first lens L1, second lens L2, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, seventh lens L7, and eighth lens L8.

[0515] Please refer to Tables 6d and 6e. Table 6d contains the basic parameters of the camera module 30 shown in Figures 28 and 29, and Table 6e contains the relationship between the parameters in Table 6d.

[0516] In Table 6d, IMH is the image height of optical lens 1, EPD is the entrance pupil diameter of optical lens 1, EFL is the focal length of optical lens 1, F1 is the focal length of the first optical element G1, fl is the focal length of the second lens group G22, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 along the optical axis, ttl is the optical length, ttl1 is the total optical length, d is the maximum focusing distance of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. The values ​​of EFL, F1, fl, fn, and fm are all effective values, and the unit is millimeters.

[0517] Table 6d

[0518] Table 6e

[0519] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.06. Furthermore, the ratio of the focal length F1 of the first optical element G1 to the focal length EFL of the optical lens 1, F1 / EFL, is 1.47. In this case, the optical power of both the image-side and object-side surfaces of the first optical element G1 is fully utilized, and the first optical element G1 possesses suitable optical power. The relatively small F1 / EFL ratio improves the compactness of the optical lens 1, facilitating its miniaturization and maximizing its performance. This results in the optical lens 1 having strong image stabilization capabilities and a high degree of compactness.

[0520] In some embodiments, the ratio of the focal length fm of the first lens group G21 to the focal length EFL of the optical lens 1, fm / EFL, is 0.68. In this case, the focal length fm of the first lens group G21 is appropriate, and the optical lens 1 produces good imaging results at both the telephoto and macro ends.

[0521] In some embodiments, the ratio dm / TTL of the axial thickness dm of the first lens group G21 in the optical axis direction to the optical length of the optical lens 1 is 0.15. In this case, the thickness of the first lens group G21 is thin, which is beneficial for the miniaturization of the optical lens 1.

[0522] In some embodiments, the ratio of the total optical length TTL1 to the image height IMH of the optical lens 1, TTL1 / IMH, is 1.74. In this case, the optical lens 1 has both a large image height and a small length.

[0523] In some embodiments, the ratio of the total optical length TTL1 to the entrance pupil diameter EPD of the optical lens 1, TTL1 / EPD, is 2.69. In this case, the optical lens 1 has a smaller length dimension and a larger amount of light entering the lens.

[0524] In some embodiments, the ratio of the total optical length TTL1 of the optical lens 1 to the focal length EFL of the optical lens 1, TTL1 / EFL, is 1.09. In this case, the optical lens 1 makes full use of the length space and has a high degree of compactness.

[0525] In some embodiments, the ratio d / EFL of the maximum focusing distance d of the first lens group G21 to the focal length EFL of the optical lens 1 is 0.13.

[0526] In some embodiments, the ratio fa / EFL of the focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 is 0.84. In this case, the optical lens 1 has strong image stabilization capability and a small size.

[0527] In some embodiments, the ratio of the focal length fb of the second lens L2 to the focal length EFL of the optical lens 1, fb / EFL, is -1.34. In this case, the optical lens 1 has strong image stabilization capabilities.

[0528] In some embodiments, the ratio fa / fb of the focal length fa of the first lens L1 to the focal length fb of the second lens is -0.627. In this case, the first optical element G1 has strong image stabilization capability and reduces the aberration of the optical lens 1, that is, the optical lens 1 has strong image stabilization capability.

[0529] Please refer to Figures 30 and 31. Figure 30 is an axial chromatic aberration diagram of the camera module 30 shown in Figure 28, and Figure 31 is a distortion diagram of the camera module 30 shown in Figure 28.

[0530] Figure 30 shows axial chromatic aberration curves corresponding to different wavelengths of the system (650nm, 610nm, 555nm, 510nm, 470nm, and 435nm). Physically, this represents the deviation of light of the corresponding wavelength emitted at a 0-degree field of view from the ideal image point after passing through the optical system. The horizontal axis represents the deviation along the optical axis, and the vertical axis represents the normalized coordinates at the pupil. The values ​​shown in Figure 30 are all relatively small, indicating good correction of on-axis aberrations (spherical aberration, chromatic aberration, etc.) in optical lens 1.

[0531] The distortion diagram shown in Figure 31 is used to characterize the relative deviation between the beam convergence point (actual image height) and the ideal image height in different fields of view. In the distortion diagram shown in Figure 31, the relative deviation is within 2%, which ensures that there is no obvious distortion in the image.

[0532] Example 7

[0533] Please refer to Figures 32 and 33. Figure 32 is a structural schematic diagram of the camera module 30 shown in Figure 5 at the telephoto end in Embodiment 7, and Figure 33 is a structural schematic diagram of the camera module 30 shown in Figure 5 at the macro end in Embodiment 7.

[0534] In some embodiments, the camera module 30 may include an optical lens 1, a photosensitive element 2, and a filter 3, with light passing sequentially through the optical lens 1 and the filter 3 to the photosensitive element 2 for imaging. The optical lens 1 includes a first optical element G1 and a second optical element G2, with the second optical element G2 located on the image side of the first optical element G1.

[0535] The first optical element G1 includes a front lens group G11, an optical path deflection element G12, and a rear lens group G13.

[0536] For example, the front lens group G11 may include a lens, namely the first lens L1. The optical path reversing element G12 may be a prism, which is used to change the optical axis from a first direction to a second direction. The rear lens group G13 may include a lens, namely the second lens L2.

[0537] For example, the first lens L1, the optical path reversing element G12, and the second lens L2 have the same refractive index. Therefore, the first lens L1 and the second lens L2 can be fixedly connected to the optical path reversing element G12 by adhesive. The first lens L1, the optical path reversing element G12, and the second lens L2 can also be formed into a single component by integral molding.

[0538] For example, the first lens L1 has positive optical power, and the second lens L2 has negative optical power. The object-side surface of the first lens L1 is convex, and the image-side surface of the second lens L2 is concave.

[0539] The second optical element G2 includes a first lens group G21, a second lens group G22, and a third lens group G23. The second lens group G22, the first lens group G21, and the third lens group G23 are arranged sequentially from the object side to the image side.

[0540] For example, the second lens group G22 includes a lens, namely the third lens L3. The second lens group G22 is a fixed lens group.

[0541] For example, the first lens group G21 includes three lenses, namely the fourth lens L4, the fifth lens L5, and the sixth lens L6 arranged sequentially from the object side to the image side. The first lens group G21 is a movable lens group, which can move along its optical axis.

[0542] For example, the third lens group G23 includes two lenses, namely the seventh lens L7, the eighth lens L8, and the ninth lens L9, arranged sequentially from the object side to the image side. The third lens group G23 is a fixed lens group.

[0543] In this embodiment, the first lens L1, the optical path folding element G12, and the second lens L2 are relatively fixed, and the three can rotate together to achieve image stabilization of the optical lens 1. Therefore, through the cooperation of the first lens L1, the optical path folding element G12, and the second lens L2, the optical lens 1 has strong image stabilization capability, good image quality, and a small size. Furthermore, the first lens group G21 achieves focusing of the optical lens 1 by moving.

[0544] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the second lens group G22. There is no need to set up additional components to fold the optical path for the photosensitive element 2, which is beneficial to provide more space for other optical components, thereby improving the compactness of the camera module 30 and facilitating the miniaturization of the camera module 30.

[0545] In some embodiments, during the transition of the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 remains fixed, the first lens group G21 moves along the second direction toward the first optical element G1, and the positions of the second lens group G22 and the third lens group G23 remain fixed. That is, the distance between the first lens group G21 and the first optical element G1 decreases, so that the subject is imaged on the imaging plane, and the optical lens 1 can image objects at closer distances.

[0546] Please refer to Table 7a, which lists the surface type, radius of curvature Y, thickness, refractive index, Abbe number, refraction mode, and thickness in macro mode for each lens, light folding element, and filter 3 of the camera module 30 shown in Figures 32 and 33. The thickness includes the thickness of the structure itself and the spacing between structures; 1E+18 (scientific notation) refers to infinity. Tables 7b and 7c show the aspherical coefficients of each lens of the optical lens 1 of the camera module 30 shown in Figures 32 and 33 in one possible embodiment.

[0547] Among them, odd-degree polynomial surfaces are a type of aspherical surface. The blank cells in the "Refraction Mode" column can each represent "Refraction". The data for the lens behind the prism is measured in terms of the refracted optical path.

[0548] Table 7a

[0549] Table 7b

[0550] Table 7c

[0551] The aspherical surfaces in optical lens 1 in Tables 7a, 7b and 7c can be defined using, but are not limited to, the following aspherical curve equations:

[0552] Where z is a point on the aspherical surface at a distance r from the optical axis, and its relative distance to the tangent plane at the intersection point on the optical axis of the aspherical surface; r is the perpendicular distance between a point on the aspherical curve and the optical axis; c is the curvature; k is the conic coefficient; αi is the i-th order aspherical coefficient, which can be found in Table 7b. The first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, and the eighth lens L8 are all aspherical surfaces.

[0553] Please refer to Tables 7d and 7e. Table 7d contains the basic parameters of the camera module 30 shown in Figures 32 and 33, and Table 7e contains the relationship between the parameters in Table 7d.

[0554] In Table 1d, IMH is the image height of optical lens 1, EPD is the entrance pupil diameter of optical lens 1, EFL is the focal length of optical lens 1, F1 is the focal length of the first optical element G1, fl is the focal length of the second lens group G22, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 along the optical axis, ttl is the optical length, ttl1 is the total optical length, d is the maximum focusing distance of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. The values ​​of EFL, F1, fl, fn, and fm are all effective values, and the unit is millimeters.

[0555] Table 7d

[0556] Table 7e

[0557] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.1. Furthermore, the ratio of the focal length F1 of the first optical element G1 to the focal length EFL of the optical lens 1, F1 / EFL, is 2.08. In this case, the optical power of both the image-side and object-side surfaces of the first optical element G1 is fully utilized, and the first optical element G1 possesses suitable optical power. The relatively small F1 / EFL ratio improves the compactness of the optical lens 1, facilitating its miniaturization and maximizing its performance. This results in the optical lens 1 having strong image stabilization capabilities and a high degree of compactness.

[0558] In some embodiments, the ratio of the focal length fm of the first lens group G21 to the focal length EFL of the optical lens 1, fm / EFL, is 0.74. In this case, the focal length fm of the first lens group G21 is appropriate, and the optical lens 1 produces good imaging results at both the telephoto and macro ends.

[0559] In some embodiments, the ratio dm / TTL of the axial thickness dm of the first lens group G21 in the optical axis direction to the optical length of the optical lens 1 is 0.16. In this case, the thickness of the first lens group G21 is thin, which is beneficial for the miniaturization of the optical lens 1.

[0560] In some embodiments, the ratio of the total optical length TTL1 to the image height IMH of the optical lens 1, TTL1 / IMH, is 1.77. In this case, the optical lens 1 has both a large image height and a small length.

[0561] In some embodiments, the ratio of the total optical length TTL1 to the entrance pupil diameter EPD of the optical lens 1, TTL1 / EPD, is 2.71. In this case, the optical lens 1 has a smaller length dimension and a larger amount of light entering the lens.

[0562] In some embodiments, the ratio of the total optical length TTL1 of the optical lens 1 to the focal length EFL of the optical lens 1, TTL1 / EFL, is 1.11. In this case, the optical lens 1 makes full use of the length space and has a high degree of compactness.

[0563] In some embodiments, the ratio d / EFL of the maximum focusing distance d of the first lens group G21 to the focal length EFL of the optical lens 1 is 0.13.

[0564] In some embodiments, the ratio fa / EFL of the focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 is 0.84. In this case, the optical lens 1 has strong image stabilization capability and a small size.

[0565] In some embodiments, the ratio of the focal length fb of the second lens L2 to the focal length EFL of the optical lens 1, fb / EFL, is -1.02. In this case, the optical lens 1 has strong image stabilization capabilities.

[0566] In some embodiments, the ratio fa / fb of the focal length fa of the first lens L1 to the focal length fb of the second lens is -0.828. In this case, the first optical element G1 has strong image stabilization capability and reduces the aberrations of the optical lens 1, that is, the optical lens 1 has strong image stabilization capability.

[0567] Please refer to Figures 34 and 35. Figure 34 is an axial chromatic aberration diagram of the camera module 30 shown in Figure 32, and Figure 35 is a distortion diagram of the camera module 30 shown in Figure 32.

[0568] Figure 34 shows axial chromatic aberration curves corresponding to different wavelengths of the system (650nm, 610nm, 555nm, 510nm, 470nm, and 435nm). Physically, it represents the deviation of light of a corresponding wavelength emitted at a 0-degree field of view from the ideal image point after passing through the optical system. The horizontal axis represents the deviation along the optical axis, and the vertical axis represents the normalized coordinates at the pupil. The values ​​shown in Figure 34 are all relatively small, indicating good correction of on-axis aberrations (spherical aberration, chromatic aberration, etc.) in optical lens 1.

[0569] The distortion diagram shown in Figure 35 is used to characterize the relative deviation between the beam convergence point (actual image height) and the ideal image height in different fields of view. In the distortion diagram shown in Figure 35, the relative deviation is within 1%, which ensures that there is no obvious distortion in the image.

[0570] Example 8

[0571] Please refer to Figures 36 and 37. Figure 36 is a structural schematic diagram of the camera module 30 shown in Figure 5 at the telephoto end in Embodiment 8, and Figure 37 is a structural schematic diagram of the camera module 30 shown in Figure 5 at the macro end in Embodiment 8.

[0572] In some embodiments, the camera module 30 may include an optical lens 1, a photosensitive element 2, and a filter 3, with light passing sequentially through the optical lens 1 and the filter 3 to the photosensitive element 2 for imaging. The optical lens 1 includes a first optical element G1 and a second optical element G2, with the second optical element G2 located on the image side of the first optical element G1.

[0573] The first optical element G1 includes a front lens group G11, an optical path deflection element G12, and a rear lens group G13.

[0574] For example, the front lens group G11 may include a lens, namely the first lens L1. The optical path reversing element G12 may be a prism, which is used to change the optical axis from a first direction to a second direction. The rear lens group G13 may include a lens, namely the second lens L2.

[0575] For example, the first lens L1, the optical path reversing element G12, and the second lens L2 have different refractive indices. Therefore, the first lens L1 and the second lens L2 can be fixedly connected to the optical path reversing element G12 by adhesive. The first lens L1, the optical path reversing element G12, and the second lens L2 can also be connected by a fastener to form an integral component.

[0576] For example, the first lens L1 has positive optical power, and the second lens L2 has negative optical power. The object-side surface of the first lens L1 is convex, and the image-side surface of the second lens L2 is concave.

[0577] The second optical element G2 includes a first lens group G21, a second lens group G22, and a third lens group G23. The second lens group G22, the first lens group G21, and the third lens group G23 are arranged sequentially from the object side to the image side.

[0578] For example, the second lens group G22 includes a lens, namely the third lens L3. The second lens group G22 is a fixed lens group.

[0579] For example, the first lens group G21 includes three lenses, namely the fourth lens L4, the fifth lens L5, and the sixth lens L6 arranged sequentially from the object side to the image side. The first lens group G21 is a movable lens group, which can move along its optical axis.

[0580] For example, the third lens group G23 includes two lenses, namely the seventh lens L7 and the eighth lens L8, arranged sequentially from the object side to the image side. The third lens group G23 is a fixed lens group.

[0581] In this embodiment, the first lens L1, the optical path folding element G12, and the second lens L2 are relatively fixed, and the three can rotate together to achieve image stabilization of the optical lens 1. Therefore, through the cooperation of the first lens L1, the optical path folding element G12, and the second lens L2, the optical lens 1 has strong image stabilization capability, good image quality, and a small size. Furthermore, the first lens group G21 achieves focusing of the optical lens 1 by moving.

[0582] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the second lens group G22. There is no need to set up additional components to fold the optical path for the photosensitive element 2, which is beneficial to provide more space for other optical components, thereby improving the compactness of the camera module 30 and facilitating the miniaturization of the camera module 30.

[0583] In some embodiments, during the transition of the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 remains fixed, the first lens group G21 moves along the second direction toward the first optical element G1, and the positions of the second lens group G22 and the third lens group G23 remain fixed. That is, the distance between the first lens group G21 and the first optical element G1 decreases, so that the subject is imaged on the imaging plane, and the optical lens 1 can image objects at closer distances.

[0584] Please refer to Table 8a, which lists the surface type, radius of curvature Y, thickness, refractive index, Abbe number, refraction mode, and thickness in macro mode for each lens, light folding element, and filter 3 of the camera module 30 shown in Figures 36 and 37. The thickness includes the thickness of the structure itself and the spacing between structures; 1E+18 (scientific notation) refers to infinity. Tables 8b and 8c show the aspherical coefficients of each lens of the optical lens 1 of the camera module 30 shown in Figures 36 and 37 in one possible embodiment.

[0585] Among them, odd-degree polynomial surfaces are a type of aspherical surface. The blank cells in the "Refraction Mode" column can each represent "Refraction". The data for the lens behind the prism is measured in terms of the refracted optical path.

[0586] Table 8a

[0587] Table 8b

[0588] Table 8c

[0589] The aspherical surfaces in optical lens 1 in Tables 8a, 8b and 8c can be defined using, but are not limited to, the following aspherical curve equations:

[0590] Where z is a point on the aspherical surface at a distance r from the optical axis, and its relative distance to the tangent plane at the intersection point on the optical axis of the aspherical surface; r is the perpendicular distance between a point on the aspherical curve and the optical axis; c is the curvature; k is the conic coefficient; αi is the i-th order aspherical coefficient, which can be found in Table 8b. The first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, and the eighth lens L8 are all aspherical surfaces.

[0591] Please refer to Tables 8d and 8e. Table 8d contains the basic parameters of the camera module 30 shown in Figures 36 and 37, and Table 8e contains the relationship between the parameters in Table 8d.

[0592] In Table 8d, IMH is the image height of optical lens 1, EPD is the entrance pupil diameter of optical lens 1, EFL is the focal length of optical lens 1, F1 is the focal length of the first optical element G1, fl is the focal length of the second lens group G22, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 along the optical axis, ttl is the optical length, ttl1 is the total optical length, d is the maximum focusing distance of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. The values ​​of EFL, F1, fl, fn, and fm are all effective values, and the unit is millimeters.

[0593] Table 8d

[0594] Table 8e

[0595] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.1. Furthermore, the ratio of the focal length F1 of the first optical element G1 to the focal length EFL of the optical lens 1, F1 / EFL, is 2.24. In this case, the optical power of both the image-side and object-side surfaces of the first optical element G1 is fully utilized, and the first optical element G1 possesses suitable optical power. The relatively small F1 / EFL ratio improves the compactness of the optical lens 1, facilitating its miniaturization and maximizing its performance. This results in the optical lens 1 having strong image stabilization capabilities and a high degree of compactness.

[0596] In some embodiments, the ratio of the focal length fm of the first lens group G21 to the focal length EFL of the optical lens 1, fm / EFL, is 0.95. In this case, the focal length fm of the first lens group G21 is appropriate, and the optical lens 1 produces good imaging results at both the telephoto and macro ends.

[0597] In some embodiments, the ratio dm / TTL of the axial thickness dm of the first lens group G21 in the optical axis direction to the optical length of the optical lens 1 is 0.17. In this case, the thickness of the first lens group G21 is thin, which is beneficial for the miniaturization of the optical lens 1.

[0598] In some embodiments, the ratio of the total optical length TTL1 to the image height IMH of the optical lens 1, TTL1 / IMH, is 2.31. In this case, the optical lens 1 has both a large image height and a small length.

[0599] In some embodiments, the ratio of the total optical length TTL1 to the entrance pupil diameter EPD of the optical lens 1, TTL1 / EPD, is 2.58. In this case, the optical lens 1 has a smaller length dimension and a larger amount of light entering the lens.

[0600] In some embodiments, the ratio of the total optical length TTL1 of the optical lens 1 to the focal length EFL of the optical lens 1, TTL1 / EFL, is 1.08. In this case, the optical lens 1 makes full use of the length space and has a high degree of compactness.

[0601] In some embodiments, the ratio d / EFL of the maximum focusing distance d of the first lens group G21 to the focal length EFL of the optical lens 1 is 0.2.

[0602] In some embodiments, the ratio fa / EFL of the focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 is 0.87. In this case, the optical lens 1 has strong image stabilization capability and a small size.

[0603] In some embodiments, the ratio of the focal length fb of the second lens L2 to the focal length EFL of the optical lens 1, fb / EFL, is -1.06. In this case, the optical lens 1 has strong image stabilization capabilities.

[0604] In some embodiments, the ratio fa / fb of the focal length fa of the first lens L1 to the focal length fb of the second lens is -0.822. In this case, the first optical element G1 has strong image stabilization capability and reduces the aberrations of the optical lens 1, that is, the optical lens 1 has strong image stabilization capability.

[0605] Please refer to Figures 38 and 39. Figure 38 is an axial chromatic aberration diagram of the camera module 30 shown in Figure 36, and Figure 39 is a distortion diagram of the camera module 30 shown in Figure 36.

[0606] Figure 38 shows axial chromatic aberration curves corresponding to different wavelengths of the system (650nm, 610nm, 555nm, 510nm, 470nm, and 435nm). Physically, it represents the deviation of light of the corresponding wavelength emitted at a 0-degree field of view from the ideal image point after passing through the optical system. The horizontal axis represents the deviation along the optical axis, and the vertical axis represents the normalized coordinates at the pupil. The values ​​shown in Figure 38 are all relatively small, indicating good correction of on-axis aberrations (spherical aberration, chromatic aberration, etc.) in optical lens 1.

[0607] The distortion diagram shown in Figure 39 is used to characterize the relative deviation between the beam convergence point (actual image height) and the ideal image height in different fields of view. In the distortion diagram shown in Figure 39, the relative deviation is within 1%, which ensures that there is no obvious distortion in the image.

[0608] Example 9

[0609] Please refer to Figures 40 and 41. Figure 40 is a structural schematic diagram of the camera module 30 shown in Figure 5 at the telephoto end in Embodiment 9, and Figure 41 is a structural schematic diagram of the camera module 30 shown in Figure 5 at the macro end in Embodiment 9.

[0610] In some embodiments, the camera module 30 may include an optical lens 1, a photosensitive element 2, and a filter 3, with light passing sequentially through the optical lens 1 and the filter 3 to the photosensitive element 2 for imaging. The optical lens 1 includes a first optical element G1 and a second optical element G2, with the second optical element G2 located on the image side of the first optical element G1.

[0611] The first optical element G1 includes a front lens group G11, an optical path deflection element G12, and a rear lens group G13.

[0612] For example, the front lens group G11 may include a lens, namely the first lens L1. The optical path reversing element G12 may be a mirror, which is used to change the optical axis from a first direction to a second direction. The rear lens group G13 may include a lens, namely the second lens L2.

[0613] For example, the optical path reversing element G12 is a reflector. Therefore, the first lens L1 and the second lens L2 can be fixedly connected to the optical path reversing element G12 by adhesive. The first lens L1, the optical path reversing element G12 and the second lens L2 can also be connected by a fastener to form an integral component.

[0614] For example, the first lens L1 has positive optical power, and the second lens L2 has negative optical power. The object-side surface of the first lens L1 is convex, and the image-side surface of the second lens L2 is concave.

[0615] The second optical element G2 includes a first lens group G21, a second lens group G22, and a third lens group G23. The second lens group G22, the first lens group G21, and the third lens group G23 are arranged sequentially from the object side to the image side.

[0616] For example, the second lens group G22 includes a lens, namely the third lens L3. The second lens group G22 is a fixed lens group.

[0617] For example, the first lens group G21 includes three lenses, namely the fourth lens L4, the fifth lens L5, and the sixth lens L6 arranged sequentially from the object side to the image side. The first lens group G21 is a movable lens group, which can move along its optical axis.

[0618] For example, the third lens group G23 includes two lenses, namely the seventh lens L7 and the eighth lens L8, arranged sequentially from the object side to the image side. The third lens group G23 is a fixed lens group.

[0619] In this embodiment, the first lens L1, the optical path folding element G12, and the second lens L2 are relatively fixed, and the three can rotate together to achieve image stabilization of the optical lens 1. Therefore, through the cooperation of the first lens L1, the optical path folding element G12, and the second lens L2, the optical lens 1 has strong image stabilization capability, good image quality, and a small size. Furthermore, the first lens group G21 achieves focusing of the optical lens 1 by moving.

[0620] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the second lens group G22. There is no need to set up additional components to fold the optical path for the photosensitive element 2, which is beneficial to provide more space for other optical components, thereby improving the compactness of the camera module 30 and facilitating the miniaturization of the camera module 30.

[0621] In some embodiments, during the transition of the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 remains fixed, the first lens group G21 moves along the second direction toward the first optical element G1, and the positions of the second lens group G22 and the third lens group G23 remain fixed. That is, the distance between the first lens group G21 and the first optical element G1 decreases, so that the subject is imaged on the imaging plane, and the optical lens 1 can image objects at closer distances.

[0622] Please refer to Table 9a. Table 9a lists the surface type, radius of curvature Y, thickness, refractive index, Abbe number, refraction mode, and thickness in macro mode for each lens, light folding element, and filter 3 of the camera module 30 shown in Figures 40 and 41. The thickness includes the thickness of the structure itself and the spacing between structures; 1E+18 (scientific notation) refers to infinity. Tables 9b and 9c show the aspherical coefficients of each lens of the optical lens 1 of the camera module 30 shown in Figures 40 and 41 in one possible embodiment.

[0623] Among them, odd-degree polynomial surfaces are a type of aspherical surface. The blank cells in the "Refraction Mode" column can each represent "Refraction". The data for the lens behind the prism is measured in terms of the refracted optical path.

[0624] Table 9a

[0625] Table 9b

[0626] Table 9c

[0627] The aspherical surfaces in optical lens 1 in Tables 9a, 9b and 9c can be defined using, but not limited to, the following aspherical curve equations:

[0628] Where z is a point on the aspherical surface at a distance r from the optical axis, and its relative distance to the tangent plane at the intersection point on the optical axis of the aspherical surface; r is the perpendicular distance between a point on the aspherical curve and the optical axis; c is the curvature; k is the conic coefficient; αi is the i-th order aspherical coefficient, which can be found in Table 9b. The first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, and the eighth lens L8 are all aspherical surfaces.

[0629] Please refer to Tables 9d and 9e. Table 9d contains the basic parameters of the camera module 30 shown in Figures 40 and 41, and Table 9e contains the relationship between the parameters in Table 9d.

[0630] In Table 9d, IMH is the image height of optical lens 1, EPD is the entrance pupil diameter of optical lens 1, EFL is the focal length of optical lens 1, F1 is the focal length of the first optical element G1, fl is the focal length of the second lens group G22, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 along the optical axis, ttl is the optical length, ttl1 is the total optical length, d is the maximum focusing distance of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. The values ​​of EFL, F1, fl, fn, and fm are all effective values, and the unit is millimeters.

[0631] Table 9d

[0632] Table 9e

[0633] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.16. Furthermore, the ratio of the focal length F1 of the first optical element G1 to the focal length EFL of the optical lens 1, F1 / EFL, is -7.25. In this case, the optical power of both the image-side and object-side surfaces of the first optical element G1 is fully utilized, and the first optical element G1 possesses suitable optical power. The relatively small F1 / EFL ratio improves the compactness of the optical lens 1, facilitating its miniaturization and maximizing its performance. This results in the optical lens 1 having strong image stabilization capabilities and a high degree of compactness.

[0634] In some embodiments, the ratio of the focal length fm of the first lens group G21 to the focal length EFL of the optical lens 1, fm / EFL, is 0.56. In this case, the focal length fm of the first lens group G21 is appropriate, and the optical lens 1 produces good imaging results at both the telephoto and macro ends.

[0635] In some embodiments, the ratio dm / TTL of the axial thickness dm of the first lens group G21 in the optical axis direction to the optical length of the optical lens 1 is 0.19. In this case, the thickness of the first lens group G21 is thin, which is beneficial for the miniaturization of the optical lens 1.

[0636] In some embodiments, the ratio of the total optical length TTL1 to the image height IMH of the optical lens 1, TTL1 / IMH, is 2.38. In this case, the optical lens 1 has both a large image height and a small length.

[0637] In some embodiments, the ratio of the total optical length TTL1 to the entrance pupil diameter EPD of the optical lens 1, TTL1 / EPD, is 2.7. In this case, the optical lens 1 has a smaller length dimension and a larger amount of light entering the lens.

[0638] In some embodiments, the ratio of the total optical length TTL1 of the optical lens 1 to the focal length EFL of the optical lens 1, TTL1 / EFL, is 1.12. In this case, the optical lens 1 makes full use of the length space and has a high degree of compactness.

[0639] In some embodiments, the ratio d / EFL of the maximum focusing distance d of the first lens group G21 to the focal length EFL of the optical lens 1 is 0.11.

[0640] In some embodiments, the ratio fa / EFL of the focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 is 0.99. In this case, the optical lens 1 has strong image stabilization capability and a small size.

[0641] In some embodiments, the ratio of the focal length fb of the second lens L2 to the focal length EFL of the optical lens 1, fb / EFL, is -0.56. In this case, the optical lens 1 has strong image stabilization capabilities.

[0642] In some embodiments, the ratio fa / fb of the focal length fa of the first lens L1 to the focal length fb of the second lens is -1.772. In this case, the first optical element G1 has strong image stabilization capability and reduces the aberrations of the optical lens 1, that is, the optical lens 1 has strong image stabilization capability.

[0643] Please refer to Figures 42 and 43. Figure 42 is an axial chromatic aberration diagram of the camera module 30 shown in Figure 40, and Figure 43 is a distortion diagram of the camera module 30 shown in Figure 40.

[0644] Figure 42 shows axial chromatic aberration curves corresponding to different wavelengths of the system (650nm, 610nm, 555nm, 510nm, 470nm, and 435nm). Physically, it represents the deviation of light of the corresponding wavelength emitted at a 0-degree field of view from the ideal image point after passing through the optical system. The horizontal axis represents the deviation along the optical axis, and the vertical axis represents the normalized coordinates at the pupil. The values ​​shown in Figure 42 are all relatively small, indicating good correction of on-axis aberrations (spherical aberration, chromatic aberration, etc.) in optical lens 1.

[0645] The distortion diagram shown in Figure 43 is used to characterize the relative deviation between the beam convergence point (actual image height) and the ideal image height in different fields of view. In the distortion diagram shown in Figure 43, the relative deviation is within 2.5%, which ensures that there is no obvious distortion in the image.

[0646] Example 10

[0647] Please refer to Figures 44 and 45. Figure 44 is a structural schematic diagram of the camera module 30 shown in Figure 5 at the telephoto end in Embodiment 10, and Figure 45 is a structural schematic diagram of the camera module 30 shown in Figure 5 at the macro end in Embodiment 10.

[0648] In some embodiments, the camera module 30 may include an optical lens 1, a photosensitive element 2, and a filter 3, with light passing sequentially through the optical lens 1 and the filter 3 to the photosensitive element 2 for imaging. The optical lens 1 includes a first optical element G1 and a second optical element G2, with the second optical element G2 located on the image side of the first optical element G1.

[0649] The first optical element G1 includes a front lens group G11, an optical path deflection element G12, and a rear lens group G13.

[0650] For example, the front lens group G11 may include a lens, namely the first lens L1. The optical path reversing element G12 may be a prism, which is used to change the optical axis from a first direction to a second direction. The rear lens group G13 may include a lens, namely the second lens L2.

[0651] For example, the first lens L1, the optical path reversing element G12, and the second lens L2 have different refractive indices. Therefore, the first lens L1 and the second lens L2 can be fixedly connected to the optical path reversing element G12 by adhesive. The first lens L1, the optical path reversing element G12, and the second lens L2 can also be connected by a fastener to form an integral component.

[0652] For example, the first lens L1 has positive optical power, and the second lens L2 has negative optical power. The object-side surface of the first lens L1 is convex, and the image-side surface of the second lens L2 is concave.

[0653] The second optical element G2 includes a first lens group G21 and a third lens group G23. The first lens group G21 and the third lens group G23 are arranged sequentially from the object side to the image side.

[0654] For example, the first lens group G21 includes four lenses, namely the third lens L3, the fourth lens L4, the fifth lens L5, and the sixth lens L6 arranged sequentially from the object side to the image side. The first lens group G21 is a movable lens group, which can move along its optical axis.

[0655] For example, the third lens group G23 includes two lenses, namely the seventh lens L7 and the eighth lens L8, arranged sequentially from the object side to the image side. The third lens group G23 is a fixed lens group.

[0656] In this embodiment, the first lens L1, the optical path folding element G12, and the second lens L2 are relatively fixed, and the three can rotate together to achieve image stabilization of the optical lens 1. Therefore, through the cooperation of the first lens L1, the optical path folding element G12, and the second lens L2, the optical lens 1 has strong image stabilization capability, good image quality, and a small size. Furthermore, the first lens group G21 achieves focusing of the optical lens 1 by moving.

[0657] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the second lens group G22. There is no need to set up additional components to fold the optical path for the photosensitive element 2, which is beneficial to provide more space for other optical components, thereby improving the compactness of the camera module 30 and facilitating the miniaturization of the camera module 30.

[0658] In some embodiments, during the transition of the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 remains fixed, the first lens group G21 moves along the second direction toward the first optical element G1, and the positions of the second lens group G22 and the third lens group G23 remain fixed. That is, the distance between the first lens group G21 and the first optical element G1 decreases, so that the subject is imaged on the imaging plane, and the optical lens 1 can image objects at closer distances.

[0659] Please refer to Table 10a. Table 10a lists the surface type, radius of curvature Y, thickness, refractive index, Abbe number, refraction mode, and thickness in macro mode for each lens, light folding element, and filter 3 of the camera module 30 shown in Figures 44 and 45. The thickness includes the thickness of the structure itself and the spacing between structures; 1E+18 (scientific notation) refers to infinity. Tables 10b and 10c show the aspherical coefficients of each lens of the optical lens 1 of the camera module 30 shown in Figures 44 and 45 in one possible embodiment.

[0660] Among them, odd-degree polynomial surfaces are a type of aspherical surface. The blank cells in the "Refraction Mode" column can each represent "Refraction". The data for the lens behind the prism is measured in terms of the refracted optical path.

[0661] Table 10a

[0662] Table 10b

[0663] Table 10c

[0664] The aspherical surfaces in optical lens 1 in Tables 10a, 10b and 10c can be defined using, but not limited to, the following aspherical curve equations:

[0665] Where z is a point on the aspherical surface at a distance r from the optical axis, and its relative distance to the tangent plane at the intersection point on the optical axis of the aspherical surface; r is the perpendicular distance between a point on the aspherical curve and the optical axis; c is the curvature; k is the conic coefficient; αi is the i-th order aspherical coefficient, which can be found in Table 10b. The first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, and the eighth lens L8 are all aspherical surfaces.

[0666] Please refer to Tables 10d and 10e. Table 10d contains the basic parameters of the camera module 30 shown in Figures 44 and 45, and Table 10e contains the relationship between the parameters in Table 10d.

[0667] In Table 10d, IMH is the image height of optical lens 1, EPD is the entrance pupil diameter of optical lens 1, EFL is the focal length of optical lens 1, F1 is the focal length of the first optical element G1, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 along the optical axis, ttl is the optical length, ttl1 is the total optical length, d is the maximum focusing distance of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. The values ​​of EFL, F1, fn, and fm are all effective values, and the unit is millimeters.

[0668] Table 10d

[0669] Table 10e

[0670] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.2. Furthermore, the ratio of the focal length F1 of the first optical element G1 to the focal length EFL of the optical lens 1, F1 / EFL, is 1.64. In this case, the optical power of both the image-side and object-side surfaces of the first optical element G1 is fully utilized, and the first optical element G1 possesses suitable optical power. The relatively small F1 / EFL ratio improves the compactness of the optical lens 1, facilitating its miniaturization and maximizing its performance. This results in the optical lens 1 having strong image stabilization capabilities and a high degree of compactness.

[0671] In some embodiments, the ratio of the focal length fm of the first lens group G21 to the focal length EFL of the optical lens 1, fm / EFL, is 0.78. In this case, the focal length fm of the first lens group G21 is appropriate, and the optical lens 1 produces good imaging results at both the telephoto and macro ends.

[0672] In some embodiments, the ratio dm / TTL of the axial thickness dm of the first lens group G21 in the optical axis direction to the optical length of the optical lens 1 is 0.17. In this case, the thickness of the first lens group G21 is thin, which is beneficial for the miniaturization of the optical lens 1.

[0673] In some embodiments, the ratio of the total optical length TTL1 to the image height IMH of the optical lens 1, TTL1 / IMH, is 2.35. In this case, the optical lens 1 has both a large image height and a small length.

[0674] In some embodiments, the ratio of the total optical length TTL1 to the entrance pupil diameter EPD of the optical lens 1, TTL1 / EPD, is 2.68. In this case, the optical lens 1 has a smaller length dimension and a larger amount of light entering the lens.

[0675] In some embodiments, the ratio of the total optical length TTL1 of the optical lens 1 to the focal length EFL of the optical lens 1, TTL1 / EFL, is 1.13. In this case, the optical lens 1 makes full use of the length space and has a high degree of compactness.

[0676] In some embodiments, the ratio d / EFL of the maximum focusing distance d of the first lens group G21 to the focal length EFL of the optical lens 1 is 0.12.

[0677] In some embodiments, the ratio fa / EFL of the focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 is 0.96. In this case, the optical lens 1 has strong image stabilization capability and a small size.

[0678] In some embodiments, the ratio of the focal length fb of the second lens L2 to the focal length EFL of the optical lens 1, fb / EFL, is -1.61. In this case, the optical lens 1 has strong image stabilization capabilities.

[0679] In some embodiments, the ratio fa / fb of the focal length fa of the first lens L1 to the focal length fb of the second lens is -0.595. In this case, the first optical element G1 has strong image stabilization capability and reduces the aberrations of the optical lens 1, that is, the optical lens 1 has strong image stabilization capability.

[0680] Please refer to Figures 46 and 47. Figure 46 is an axial chromatic aberration diagram of the camera module 30 shown in Figure 44, and Figure 47 is a distortion diagram of the camera module 30 shown in Figure 44.

[0681] Figure 46 shows axial chromatic aberration curves corresponding to different wavelengths of the system (650nm, 610nm, 555nm, 510nm, 470nm, and 435nm). Physically, it represents the deviation of light of the corresponding wavelength emitted at a 0-degree field of view from the ideal image point after passing through the optical system. The horizontal axis represents the deviation along the optical axis, and the vertical axis represents the normalized coordinates at the pupil. The values ​​shown in Figure 46 are all relatively small, indicating good correction of on-axis aberrations (spherical aberration, chromatic aberration, etc.) in optical lens 1.

[0682] The distortion diagram shown in Figure 47 is used to characterize the relative deviation between the beam convergence point (actual image height) and the ideal image height in different fields of view. In the distortion diagram shown in Figure 47, the relative deviation is within 1%, which ensures that there is no obvious distortion in the image.

[0683] Example 11

[0684] Please refer to Figures 48 and 49. Figure 48 is a structural schematic diagram of the camera module 30 shown in Figure 5 at the telephoto end in Embodiment Eleven, and Figure 49 is a structural schematic diagram of the camera module 30 shown in Figure 48 at the macro end in some embodiments.

[0685] In some embodiments, the camera module 30 may include an optical lens 1, a photosensitive element 2, and a filter 3, with light passing sequentially through the optical lens 1 and the filter 3 to the photosensitive element 2 for imaging. The optical lens 1 includes a first optical element G1 and a second optical element G2, with the second optical element G2 located on the image side of the first optical element G1.

[0686] The first optical element G1 includes a front lens group G11, an optical path deflection element G12, and a rear lens group G13.

[0687] For example, the front lens group G11 may include a lens, namely the first lens L1. The optical path reversing element G12 may be a prism, which is used to change the optical axis from a first direction to a second direction. The rear lens group G13 may include a lens, namely the second lens L2.

[0688] For example, the first lens L1, the optical path reversing element G12, and the second lens L2 have different refractive indices. Therefore, the first lens L1 and the second lens L2 can be fixedly connected to the optical path reversing element G12 by adhesive. The first lens L1, the optical path reversing element G12, and the second lens L2 can also be connected by a fastener to form an integral component.

[0689] For example, the first lens L1 has positive optical power, and the second lens L2 has negative optical power. The object-side surface of the first lens L1 is convex, and the image-side surface of the second lens L2 is concave.

[0690] The second optical element G2 includes a first lens group G21 and a third lens group G23. The first lens group G21 and the third lens group G23 are arranged sequentially from the object side to the image side.

[0691] For example, the first lens group G21 includes four lenses, namely the third lens L3, the fourth lens L4, the fifth lens L5, and the sixth lens L6 arranged sequentially from the object side to the image side. The first lens group G21 is a movable lens group, which can move along its optical axis.

[0692] For example, the third lens group G23 includes three lenses: a seventh lens L7, an eighth lens L8, and a ninth lens L9, arranged sequentially from the object side to the image side. The third lens group G23 is a fixed lens group. In this case, the third lens group G23 is the lens group of the second optical element G2 closest to the image side.

[0693] In this embodiment, the first lens L1, the optical path folding element G12, and the second lens L2 are relatively fixed, and the three can rotate together to achieve image stabilization of the optical lens 1. Therefore, through the cooperation of the first lens L1, the optical path folding element G12, and the second lens L2, the optical lens 1 has strong image stabilization capability, good image quality, and a small size. Furthermore, the first lens group G21 achieves focusing of the optical lens 1 by moving.

[0694] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the third lens group G23. There is no need to set up additional components to fold the optical path for the photosensitive element 2, which is beneficial to provide more space for other optical components, thereby improving the compactness of the camera module 30 and facilitating the miniaturization of the camera module 30.

[0695] In some embodiments, during the transition of the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 is fixed, the first lens group G21 moves along the second direction toward the first optical element G1, and the position of the third lens group G23 is fixed. That is, the distance between the first lens group G21 and the first optical element G1 decreases, so that the subject is imaged on the imaging plane, and the optical lens 1 can image objects at closer distances.

[0696] Please refer to Table 11a, which lists the surface type, radius of curvature Y, thickness, refractive index, Abbe number, refraction mode, and thickness in macro mode for each lens, light folding element, and filter 3 of the camera module 30 shown in Figures 48 and 49. The thickness includes the thickness of the structure itself and the spacing between structures; 1E+18 (scientific notation) refers to infinity. Tables 11b and 11c show the aspherical coefficients of each lens in some embodiments of the optical lens 1 of the camera module 30 shown in Figures 48 and 49.

[0697] Among them, odd-degree polynomial surfaces are a type of aspherical surface. The blank cells in the "Refraction Mode" column can each represent "Refraction". The data for the lens behind the prism is measured in terms of the refracted optical path.

[0698] Table 11a

[0699] Table 11b

[0700] Table 11c

[0701] The aspherical surfaces in optical lens 1 in Tables 11a, 11b and 11c can be defined using, but not limited to, the following aspherical curve equations:

[0702] Where z is a point on the aspherical surface at a distance r from the optical axis, and its relative distance to the tangent plane at the intersection point on the optical axis of the aspherical surface; r is the perpendicular distance between a point on the aspherical curve and the optical axis; c is the curvature; k is the conic coefficient; αi is the i-th order aspherical coefficient, which can be found in Table 11b. The first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, and the eighth lens L8 are all aspherical surfaces.

[0703] Please refer to Tables 11d and 11e. Table 11d contains the basic parameters of the camera module 30 shown in Figures 48 and 49, and Table 11e contains the relationship between the parameters in Table 11d.

[0704] In Table 11d, IMH is the image height of optical lens 1, EPD is the entrance pupil diameter of optical lens 1, EFL is the focal length of optical lens 1, F1 is the focal length of the first optical element G1, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 along the optical axis, ttl is the optical length, ttl1 is the total optical length, d is the maximum focusing distance of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. The values ​​of EFL, F1, fn, and fm are all effective values, and the unit is millimeters.

[0705] Table 11d

[0706] Table 11e

[0707] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.162. Furthermore, the ratio of the focal length F1 of the first optical element G1 to the focal length EFL of the optical lens 1, F1 / EFL, is 2.412. In this case, the optical power of both the image-side and object-side surfaces of the first optical element G1 is fully utilized, and the first optical element G1 possesses suitable optical power. The relatively small F1 / EFL ratio improves the compactness of the optical lens 1, facilitating its miniaturization and maximizing its performance. This results in the optical lens 1 having strong image stabilization capabilities and a high degree of compactness.

[0708] In some embodiments, the ratio of the focal length fm of the first lens group G21 to the focal length EFL of the optical lens 1, fm / EFL, is 0.733. In this case, the focal length fm of the first lens group G21 is appropriate, and the optical lens 1 produces good imaging results at both the telephoto and macro ends.

[0709] In some embodiments, the ratio dm / TTL of the axial thickness dm of the first lens group G21 in the optical axis direction to the optical length of the optical lens 1 is 0.196. In this case, the thickness of the first lens group G21 is thin, which is beneficial for the miniaturization of the optical lens 1.

[0710] In some embodiments, the ratio of the total optical length TTL1 to the image height IMH of the optical lens 1, TTL1 / IMH, is 2.286. In this case, the optical lens 1 has both a large image height and a small length.

[0711] In some embodiments, the ratio of the total optical length TTL1 to the entrance pupil diameter EPD of the optical lens 1, TTL1 / EPD, is 2.585. In this case, the optical lens 1 has a smaller length dimension and a larger amount of light entering the lens.

[0712] In some embodiments, the ratio of the total optical length TTL1 of the optical lens 1 to the focal length EFL of the optical lens 1, TTL1 / EFL, is 1.173. In this case, the optical lens 1 makes full use of the length space and has a high degree of compactness.

[0713] In some embodiments, the ratio d / EFL of the maximum focusing distance d of the first lens group G21 to the focal length EFL of the optical lens 1 is 0.109.

[0714] In some embodiments, the ratio fa / EFL of the focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 is 1.647. In this case, the optical lens 1 has strong image stabilization capability and a small size.

[0715] In some embodiments, the ratio of the focal length fb of the second lens L2 to the focal length EFL of the optical lens 1, fb / EFL, is -1.45. In this case, the optical lens 1 has strong image stabilization capabilities.

[0716] In some embodiments, the ratio fa / fb of the focal length fa of the first lens L1 to the focal length fb of the second lens is -1.13. In this case, the first optical element G1 has strong image stabilization capability and reduces the aberrations of the optical lens 1, that is, the optical lens 1 has strong image stabilization capability.

[0717] Please refer to Figures 50 and 51. Figure 50 is an axial chromatic aberration diagram of the camera module 30 shown in Figure 48, and Figure 51 is a distortion diagram of the camera module 30 shown in Figure 48.

[0718] Figure 50 shows axial chromatic aberration curves corresponding to different wavelengths of the system (650nm, 610nm, 555nm, 510nm, 470nm, and 435nm). Physically, it represents the deviation of light of a corresponding wavelength emitted at a 0-degree field of view from the ideal image point after passing through the optical system. The horizontal axis represents the deviation along the optical axis, and the vertical axis represents the normalized coordinates at the pupil. The values ​​shown in Figure 50 are all relatively small, indicating good correction of on-axis aberrations (spherical aberration, chromatic aberration, etc.) in optical lens 1.

[0719] The distortion diagram shown in Figure 51 is used to characterize the relative deviation between the beam convergence point (actual image height) and the ideal image height in different fields of view. In the distortion diagram shown in Figure 51, the relative deviation is within 1.5%, which ensures that there is no obvious distortion in the image.

[0720] Example 12

[0721] Please refer to Figures 52 and 53. Figure 52 is a structural schematic diagram of the camera module 30 shown in Figure 5 at the telephoto end in Embodiment Twelve, and Figure 53 is a structural schematic diagram of the camera module 30 shown in Figure 52 at the macro end in some embodiments.

[0722] In some embodiments, the camera module 30 may include an optical lens 1, a photosensitive element 2, and a filter 3, with light passing sequentially through the optical lens 1 and the filter 3 to the photosensitive element 2 for imaging. The optical lens 1 includes a first optical element G1 and a second optical element G2, with the second optical element G2 located on the image side of the first optical element G1.

[0723] The first optical element G1 includes a front lens group G11, an optical path deflection element G12, and a rear lens group G13.

[0724] For example, the front lens group G11 may include a lens, namely the first lens L1. The optical path reversing element G12 may be a prism, which is used to change the optical axis from a first direction to a second direction.

[0725] The light-emitting surface of the rear lens group G13 can be formed on the optical path reversing element G12. In this case, the rear lens group G13 and the optical path reversing element G12 are integrally formed optical structures. The refractive index of the rear lens group G13 is the same as the material and refractive index of the optical path reversing element G12.

[0726] For example, the first lens L1 and the optical path reversing element G12 have different refractive indices. Therefore, the first lens L1 can be fixedly connected to the optical path reversing element G12 by adhesive, and the first lens L1 and the optical path reversing element G12 can also be connected by a fastener to form an integral component.

[0727] For example, the first lens L1 has positive optical power, and the second lens L2 has negative optical power. The object-side surface of the first lens L1 is convex, and the image-side surface of the second lens L2 is concave.

[0728] The second optical element G2 includes a first lens group G21 and a third lens group G23. The first lens group G21 and the third lens group G23 are arranged sequentially from the object side to the image side.

[0729] For example, the first lens group G21 includes four lenses, namely the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5, arranged sequentially from the object side to the image side. The first lens group G21 is a movable lens group, which can move along its optical axis.

[0730] For example, the third lens group G23 includes three lenses, namely the sixth lens L6 and the seventh lens L7 arranged sequentially from the object side to the image side. The third lens group G23 is a fixed lens group.

[0731] In this embodiment, the first lens L1, the optical path folding element G12, and the second lens L2 are relatively fixed, and the three can rotate together to achieve image stabilization of the optical lens 1. Therefore, through the cooperation of the first lens L1, the optical path folding element G12, and the second lens L2, the optical lens 1 has strong image stabilization capability, good image quality, and a small size. Furthermore, the first lens group G21 achieves focusing of the optical lens 1 by moving.

[0732] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the third lens group G23. There is no need to set up additional components to fold the optical path for the photosensitive element 2, which is beneficial to provide more space for other optical components, thereby improving the compactness of the camera module 30 and facilitating the miniaturization of the camera module 30.

[0733] In some embodiments, during the transition of the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 is fixed, the first lens group G21 moves along the second direction toward the first optical element G1, and the position of the third lens group G23 is fixed. That is, the distance between the first lens group G21 and the first optical element G1 decreases, so that the subject is imaged on the imaging plane, and the optical lens 1 can image objects at closer distances.

[0734] Please refer to Table 12a. Table 12a lists the surface type, radius of curvature Y, thickness, refractive index, Abbe number, refraction mode, and thickness in macro mode for each lens, light folding element, and filter 3 of the camera module 30 shown in Figures 52 and 53. The thickness includes the thickness of the structure itself and the spacing between structures; 1E+18 (scientific notation) refers to infinity. Tables 12b and 12c list the aspherical coefficients of each lens in some embodiments of the optical lens 1 of the camera module 30 shown in Figures 52 and 53.

[0735] Among them, odd-degree polynomial surfaces are a type of aspherical surface. The blank cells in the "Refraction Mode" column can each represent "Refraction". The data for the lens behind the prism is measured in terms of the refracted optical path.

[0736] Table 12a

[0737] Table 12b

[0738] Table 12c

[0739] The aspherical surfaces in optical lens 1 in Tables 12a, 12b and 12c can be defined using, but not limited to, the following aspherical curve equations:

[0740] Where z is a point on the aspherical surface at a distance r from the optical axis, and its relative distance to the tangent plane at the intersection point on the optical axis of the aspherical surface; r is the perpendicular distance between a point on the aspherical curve and the optical axis; c is the curvature; k is the conic coefficient; αi is the i-th order aspherical coefficient, which can be found in Table 12b. The first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the seventh lens L7 are all aspherical surfaces.

[0741] Please refer to Tables 12d and 12e. Table 12d contains the basic parameters of the camera module 30 shown in Figures 52 and 53, and Table 12e contains the relationship between the parameters in Table 12d.

[0742] In Table 12d, IMH is the image height of optical lens 1, EPD is the entrance pupil diameter of optical lens 1, EFL is the focal length of optical lens 1, F1 is the focal length of the first optical element G1, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 along the optical axis, ttl is the optical length, ttl1 is the total optical length, d is the maximum focusing distance of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. The values ​​of EFL, F1, fn, and fm are all effective values, and the unit is millimeters.

[0743] Table 12d

[0744] Table 12e

[0745] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.245. Furthermore, the ratio of the focal length F1 of the first optical element G1 to the focal length EFL of the optical lens 1, F1 / EFL, is 2.034. In this case, the optical power of both the image-side and object-side surfaces of the first optical element G1 is fully utilized, and the first optical element G1 possesses suitable optical power. The relatively small F1 / EFL ratio improves the compactness of the optical lens 1, facilitating its miniaturization and maximizing its performance. This results in the optical lens 1 having strong image stabilization capabilities and a high degree of compactness.

[0746] In some embodiments, the ratio of the focal length fm of the first lens group G21 to the focal length EFL of the optical lens 1, fm / EFL, is 0.811. In this case, the focal length fm of the first lens group G21 is appropriate, and the optical lens 1 produces good imaging results at both the telephoto and macro ends.

[0747] In some embodiments, the ratio dm / TTL of the axial thickness dm of the first lens group G21 in the optical axis direction to the optical length of the optical lens 1 is 0.253. In this case, the thickness of the first lens group G21 is thin, which is beneficial for the miniaturization of the optical lens 1.

[0748] In some embodiments, the ratio of the total optical length TTL1 to the image height IMH of the optical lens 1, TTL1 / IMH, is 2.286. In this case, the optical lens 1 has both a large image height and a small length.

[0749] In some embodiments, the ratio of the total optical length TTL1 to the entrance pupil diameter EPD of the optical lens 1, TTL1 / EPD, is 2.585. In this case, the optical lens 1 has a smaller length dimension and a larger amount of light entering the lens.

[0750] In some embodiments, the ratio of the total optical length TTL1 of the optical lens 1 to the focal length EFL of the optical lens 1, TTL1 / EFL, is 1.173. In this case, the optical lens 1 makes full use of the length space and has a high degree of compactness.

[0751] In some embodiments, the ratio d / EFL of the maximum focusing distance d of the first lens group G21 to the focal length EFL of the optical lens 1 is 0.113.

[0752] In some embodiments, the ratio fa / EFL of the focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 is 1.665. In this case, the optical lens 1 has strong image stabilization capability and a small size.

[0753] In some embodiments, the ratio of the focal length fb of the second lens L2 to the focal length EFL of the optical lens 1, fb / EFL, is -1.81. In this case, the optical lens 1 has strong image stabilization capabilities.

[0754] In some embodiments, the ratio fa / fb of the focal length fa of the first lens L1 to the focal length fb of the second lens is -0.92. In this case, the first optical element G1 has strong image stabilization capability and reduces the aberrations of the optical lens 1, that is, the optical lens 1 has strong image stabilization capability.

[0755] Please refer to Figures 54 and 55. Figure 54 is an axial chromatic aberration diagram of the camera module 30 shown in Figure 52, and Figure 55 is a distortion diagram of the camera module 30 shown in Figure 52.

[0756] Figure 54 shows axial chromatic aberration curves corresponding to different wavelengths of the system (650nm, 610nm, 555nm, 510nm, 470nm, and 435nm). Physically, it represents the deviation of light of the corresponding wavelength emitted at a 0-degree field of view from the ideal image point after passing through the optical system. The horizontal axis represents the deviation along the optical axis, and the vertical axis represents the normalized coordinates at the pupil. The values ​​shown in Figure 54 are all relatively small, indicating good correction of on-axis aberrations (spherical aberration, chromatic aberration, etc.) in optical lens 1.

[0757] The distortion diagram shown in Figure 55 is used to characterize the relative deviation between the beam convergence point (actual image height) and the ideal image height in different fields of view. In the distortion diagram shown in Figure 55, the relative deviation is within 2.5%, which ensures that there is no obvious distortion in the image.

[0758] Example 13

[0759] Please refer to Figures 56 and 57. Figure 56 is a structural schematic diagram of the camera module 30 shown in Figure 5 at the telephoto end in Embodiment Thirteen, and Figure 57 is a structural schematic diagram of the camera module 30 shown in Figure 56 at the macro end in some embodiments.

[0760] In some embodiments, the camera module 30 may include an optical lens 1, a photosensitive element 2, and a filter 3, with light passing sequentially through the optical lens 1 and the filter 3 to the photosensitive element 2 for imaging. The optical lens 1 includes a first optical element G1 and a second optical element G2, with the second optical element G2 located on the image side of the first optical element G1.

[0761] The first optical element G1 includes a front lens group G11, an optical path deflection element G12, and a rear lens group G13.

[0762] For example, the front lens group G11 may include a lens, namely the first lens L1. The optical path reversing element G12 may be a prism, which is used to change the optical axis from a first direction to a second direction. The rear lens group G13 may include a lens, namely the second lens L2.

[0763] For example, the first lens L1, the optical path reversing element G12, and the second lens L2 have different refractive indices. Therefore, the first lens L1 and the second lens L2 can be fixedly connected to the optical path reversing element G12 by adhesive. The first lens L1, the optical path reversing element G12, and the second lens L2 can also be connected by a fastener to form an integral component.

[0764] For example, the first lens L1 has positive optical power, and the second lens L2 has negative optical power. The object-side surface of the first lens L1 is convex, and the image-side surface of the second lens L2 is concave.

[0765] The second optical element G2 includes a first lens group G21 and a third lens group G23. The first lens group G21 and the third lens group G23 are arranged sequentially from the object side to the image side.

[0766] For example, the first lens group G21 includes four lenses, namely the third lens L3, the fourth lens L4, the fifth lens L5, and the sixth lens L6 arranged sequentially from the object side to the image side. The first lens group G21 is a movable lens group, which can move along its optical axis.

[0767] For example, the third lens group G23 includes two lenses, namely the seventh lens L7 and the eighth lens L8, arranged sequentially from the object side to the image side. The third lens group G23 is a fixed lens group.

[0768] In this embodiment, the first lens L1, the optical path folding element G12, and the second lens L2 are relatively fixed, and the three can rotate together to achieve image stabilization of the optical lens 1. Therefore, through the cooperation of the first lens L1, the optical path folding element G12, and the second lens L2, the optical lens 1 has strong image stabilization capability, good image quality, and a small size. Furthermore, the first lens group G21 achieves focusing of the optical lens 1 by moving.

[0769] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the third lens group G23. There is no need to set up additional components to fold the optical path for the photosensitive element 2, which is beneficial to provide more space for other optical components, thereby improving the compactness of the camera module 30 and facilitating the miniaturization of the camera module 30.

[0770] In some embodiments, during the transition of the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 is fixed, the first lens group G21 moves along the second direction toward the first optical element G1, and the position of the third lens group G23 is fixed. That is, the distance between the first lens group G21 and the first optical element G1 decreases, so that the subject is imaged on the imaging plane, and the optical lens 1 can image objects at closer distances.

[0771] In some embodiments, the front lens group G11, the optical path deflection element G12, and the rear lens group G13 can be made of the same material. In this case, the three can be integrally formed. For example, the first lens L1, the optical path deflection element G12, and the second lens L2 can be made of the same material and have zero distance between them, and the three can be integrally formed optical elements.

[0772] In some embodiments, the materials of the front lens group G11, the optical path deflection element G12, and the rear lens group G13 can be low-density materials to reduce the weight of the first optical element G1, thereby reducing the power requirement of the drive motor for the first optical element G1. For example, the density of the materials of the front lens group G11, the optical path deflection element G12, and the rear lens group G13 can satisfy: ρ < 4 g / cm³. 3 However, it is not strictly limited to this.

[0773] Please refer to Table 13a. Table 13a lists the surface type, radius of curvature Y, thickness, refractive index, Abbe number, refraction mode, and thickness in macro mode for each lens, light folding element, and filter 3 of the camera module 30 shown in Figures 56 and 57. The thickness includes the thickness of the structure itself and the spacing between structures; 1E+18 (scientific notation) refers to infinity. Tables 13b and 13c list the aspherical coefficients of each lens in some embodiments of the optical lens 1 of the camera module 30 shown in Figures 56 and 57.

[0774] Table 13a

[0775] Table 13b

[0776] Table 13c

[0777] The aspherical surfaces in optical lens 1 in Tables 13a, 13b and 13c can be defined using, but not limited to, the following aspherical curve equations:

[0778] Where z is a point on the aspherical surface at a distance r from the optical axis, and its relative distance to the tangent plane at the intersection point on the optical axis of the aspherical surface; r is the perpendicular distance between a point on the aspherical curve and the optical axis; c is the curvature; k is the conic coefficient; αi is the i-th order aspherical coefficient, which can be found in Table 13b. The first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, and the eighth lens L8 are all aspherical surfaces.

[0779] Please refer to Tables 13d and 13e. Table 13d contains the basic parameters of the camera module 30 shown in Figures 56 and 57, and Table 13e contains the relationship between the parameters in Table 13d.

[0780] In Table 13d, IMH is the image height of optical lens 1, EPD is the entrance pupil diameter of optical lens 1, EFL is the focal length of optical lens 1, F1 is the focal length of the first optical element G1, fn is the focal length of the third lens group G23, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 along the optical axis, ttl is the optical length, ttl1 is the total optical length, d is the maximum focusing distance of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. The values ​​of EFL, F1, fn, and fm are all effective values, in millimeters.

[0781] Table 13d

[0782] Table 13e

[0783] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.198. Furthermore, the ratio of the focal length F1 of the first optical element G1 to the focal length EFL of the optical lens 1, F1 / EFL, is 2.426. In this case, the optical power of both the image-side and object-side surfaces of the first optical element G1 is fully utilized, and the first optical element G1 possesses suitable optical power. The relatively small F1 / EFL ratio improves the compactness of the optical lens 1, facilitating its miniaturization and maximizing its performance. This results in the optical lens 1 having strong image stabilization capabilities and a high degree of compactness.

[0784] In some embodiments, the ratio of the focal length fm of the first lens group G21 to the focal length EFL of the optical lens 1, fm / EFL, is 0.759. In this case, the focal length fm of the first lens group G21 is appropriate, and the optical lens 1 produces good imaging results at both the telephoto and macro ends.

[0785] In some embodiments, the ratio dm / TTL of the axial thickness dm of the first lens group G21 in the optical axis direction to the optical length of the optical lens 1 is 0.257. In this case, the thickness of the first lens group G21 is thin, which is beneficial for the miniaturization of the optical lens 1.

[0786] In some embodiments, the ratio of the total optical length TTL1 to the image height IMH of the optical lens 1, TTL1 / IMH, is 2.384. In this case, the optical lens 1 has both a large image height and a small length.

[0787] In some embodiments, the ratio of the total optical length TTL1 to the entrance pupil diameter EPD of the optical lens 1, TTL1 / EPD, is 2.695. In this case, the optical lens 1 has a smaller length dimension and a larger amount of light entering the lens.

[0788] In some embodiments, the ratio of the total optical length TTL1 of the optical lens 1 to the focal length EFL of the optical lens 1, TTL1 / EFL, is 1.224. In this case, the optical lens 1 makes full use of the length space and has a high degree of compactness.

[0789] In some embodiments, the ratio d / EFL of the maximum focusing distance d of the first lens group G21 to the focal length EFL of the optical lens 1 is 0.110.

[0790] In some embodiments, the ratio fa / EFL of the focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 is 1.805. In this case, the optical lens 1 has strong image stabilization capability and a small size.

[0791] In some embodiments, the ratio of the focal length fb of the second lens L2 to the focal length EFL of the optical lens 1, fb / EFL, is -1.77. In this case, the optical lens 1 has strong image stabilization capabilities.

[0792] In some embodiments, the ratio fa / fb of the focal length fa of the first lens L1 to the focal length fb of the second lens is -1.02. In this case, the first optical element G1 has strong image stabilization capability and reduces the aberration of the optical lens 1, that is, the optical lens 1 has strong image stabilization capability.

[0793] Please refer to Figures 58 and 59. Figure 58 is an axial chromatic aberration diagram of the camera module 30 shown in Figure 56, and Figure 59 is a distortion diagram of the camera module 30 shown in Figure 56.

[0794] Figure 58 shows axial chromatic aberration curves corresponding to different wavelengths of the system (650nm, 610nm, 555nm, 510nm, 470nm, and 435nm). Physically, it represents the deviation of light of the corresponding wavelength emitted at a 0-degree field of view from the ideal image point after passing through the optical system. The horizontal axis represents the deviation along the optical axis, and the vertical axis represents the normalized coordinates at the pupil. The values ​​shown in Figure 58 are all relatively small, indicating good correction of on-axis aberrations (spherical aberration, chromatic aberration, etc.) in optical lens 1.

[0795] The distortion diagram shown in Figure 59 is used to characterize the relative deviation between the beam convergence point (actual image height) and the ideal image height in different fields of view. In the distortion diagram shown in Figure 59, the relative deviation is within 2.5%, which ensures that there is no obvious distortion in the image.

[0796] Example 14

[0797] Please refer to Figures 60 and 61. Figure 60 is a structural schematic diagram of the camera module 30 shown in Figure 5 at the telephoto end in Embodiment Fourteen, and Figure 61 is a structural schematic diagram of the camera module 30 shown in Figure 60 at the macro end in some embodiments.

[0798] In some embodiments, the camera module 30 may include an optical lens 1, a photosensitive element 2, and a filter 3, with light passing sequentially through the optical lens 1 and the filter 3 to the photosensitive element 2 for imaging. The optical lens 1 includes a first optical element G1 and a second optical element G2, with the second optical element G2 located on the image side of the first optical element G1.

[0799] The first optical element G1 includes a front lens group G11, an optical path deflection element G12, and a rear lens group G13.

[0800] For example, the front lens group G11 may include a lens, namely the first lens L1. The optical path reversing element G12 may be a prism, which is used to change the optical axis from a first direction to a second direction. The rear lens group G13 may include a lens, namely the second lens L2.

[0801] For example, the first lens L1, the optical path reversing element G12, and the second lens L2 have different refractive indices. Therefore, the first lens L1 and the second lens L2 can be fixedly connected to the optical path reversing element G12 by adhesive. The first lens L1, the optical path reversing element G12, and the second lens L2 can also be connected by a fastener to form an integral component.

[0802] For example, the first lens L1 has positive optical power, and the second lens L2 has negative optical power. The object-side surface of the first lens L1 is convex, and the image-side surface of the second lens L2 is concave.

[0803] The second optical element G2 includes a first lens group G21 and a second lens group G22. The second lens group G22 and the first lens group G21 are arranged sequentially from the object side to the image side.

[0804] For example, the second lens group G22 includes three lenses, namely the third lens L3, the fourth lens L4, and the fifth lens L5 arranged sequentially from the object side to the image side. The second lens group G22 is a fixed lens group.

[0805] For example, the first lens group G21 includes three lenses, namely the sixth lens L6, the seventh lens L7, and the eighth lens L8, arranged sequentially from the object side to the image side. The first lens group G21 is a movable lens group, capable of moving along its optical axis. In this case, the first lens group G21 is the lens group of the second optical element G2 closest to the image side.

[0806] In this embodiment, the first lens L1, the optical path folding element G12, and the second lens L2 are relatively fixed, and the three can rotate together to achieve image stabilization of the optical lens 1. Therefore, through the cooperation of the first lens L1, the optical path folding element G12, and the second lens L2, the optical lens 1 has strong image stabilization capability, good image quality, and a small size. Furthermore, the first lens group G21 achieves focusing of the optical lens 1 by moving.

[0807] In the camera module 30, the photosensitive element 2 can be perpendicular to the optical axis of the second lens group G22. There is no need to set up additional components to fold the optical path for the photosensitive element 2, which is beneficial to provide more space for other optical components, thereby improving the compactness of the camera module 30 and facilitating the miniaturization of the camera module 30.

[0808] In some embodiments, during the transition of the optical lens 1 from the telephoto end to the macro end, the position of the first optical element G1 is fixed, the first lens group G21 moves along the second direction toward the first optical element G1, and the position of the second lens group G22 is fixed. That is, the distance between the first lens group G21 and the first optical element G1 decreases, so that the subject is imaged on the imaging plane, and the optical lens 1 can image objects at closer distances.

[0809] Please refer to Table 14a. Table 14a lists the surface type, radius of curvature Y, thickness, refractive index, Abbe number, refraction mode, and thickness in macro mode for each lens, light folding element, and filter 3 of the camera module 30 shown in Figures 60 and 61. The thickness includes the thickness of the structure itself and the spacing between structures; 1E+18 (scientific notation) refers to infinity. Tables 14b and 14c list the aspherical coefficients of each lens in some embodiments of the optical lens 1 of the camera module 30 shown in Figures 60 and 61.

[0810] Table 14a

[0811] Table 14b

[0812] Table 14c

[0813] The aspherical surfaces in optical lens 1 in Tables 14a, 14b and 14c can be defined using, but not limited to, the following aspherical curve equations:

[0814] Where z is a point on the aspherical surface at a distance r from the optical axis, and its relative distance to the tangent plane at the intersection point on the optical axis of the aspherical surface; r is the perpendicular distance between a point on the aspherical curve and the optical axis; c is the curvature; k is the conic coefficient; αi is the i-th order aspherical coefficient, which can be found in Table 14b. The first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, and the eighth lens L8 are all aspherical surfaces.

[0815] Please refer to Tables 14d and 14e. Table 14d contains the basic parameters of the camera module 30 shown in Figures 60 and 61, and Table 14e contains the relationship between the parameters in Table 14d.

[0816] In Table 14d, IMH is the image height of optical lens 1, EPD is the entrance pupil diameter of optical lens 1, EFL is the focal length of optical lens 1, F1 is the focal length of the first optical element G1, fl is the focal length of the second lens group G22, fm is the focal length of the first lens group G21, dm is the length of the first lens group G21 along the optical axis, ttl is the optical length, ttl1 is the total optical length, d is the maximum focusing distance of the first lens group G21, L is the macro imaging distance, fa is the focal length of the first lens L1, and fb is the focal length of the second lens L2. The values ​​of EFL, F1, fl, and fm are all effective values, and the unit is millimeters.

[0817] Table 14d

[0818] Table 14e

[0819] In some embodiments, the first optical element G1 of the optical lens 1 satisfies: ||sag1*(n1-1)|-|sag2*(n2-1)|| / ||sag1*(n1-1)|+|sag2*(n2-1)||<0.490. Furthermore, the ratio of the focal length F1 of the first optical element G1 to the focal length EFL of the optical lens 1, F1 / EFL, is 2.072. In this case, the optical power of both the image-side and object-side surfaces of the first optical element G1 is fully utilized, and the first optical element G1 possesses suitable optical power. The relatively small F1 / EFL ratio improves the compactness of the optical lens 1, facilitating its miniaturization and maximizing its performance. This results in the optical lens 1 having strong image stabilization capabilities and a high degree of compactness.

[0820] In some embodiments, the ratio of the focal length fm of the first lens group G21 to the focal length EFL of the optical lens 1, fm / EFL, is -0.522. In this case, the focal length fm of the first lens group G21 is appropriate, and the optical lens 1 produces good imaging results at both the telephoto and macro ends.

[0821] In some embodiments, the ratio dm / TTL of the axial thickness dm of the first lens group G21 in the optical axis direction to the optical length of the optical lens 1 is 0.257. In this case, the thickness of the first lens group G21 is thin, which is beneficial for the miniaturization of the optical lens 1.

[0822] In some embodiments, the ratio of the total optical length TTL1 to the image height IMH of the optical lens 1, TTL1 / IMH, is 2.293. In this case, the optical lens 1 has both a large image height and a small length.

[0823] In some embodiments, the ratio of the total optical length TTL1 to the entrance pupil diameter EPD of the optical lens 1, TTL1 / EPD, is 2.585. In this case, the optical lens 1 has a smaller length dimension and a larger amount of light entering the lens.

[0824] In some embodiments, the ratio of the total optical length TTL1 of the optical lens 1 to the focal length EFL of the optical lens 1, TTL1 / EFL, is 1.173. In this case, the optical lens 1 makes full use of the length space and has a high degree of compactness.

[0825] In some embodiments, the ratio d / EFL of the maximum focusing distance d of the first lens group G21 to the focal length EFL of the optical lens 1 is 0.113.

[0826] In some embodiments, the ratio fa / EFL of the focal length fa of the first lens L1 to the focal length EFL of the optical lens 1 is 2.272. In this case, the optical lens 1 has strong image stabilization capability and a small size.

[0827] In some embodiments, the ratio of the focal length fb of the second lens L2 to the focal length EFL of the optical lens 1, fb / EFL, is -4.37. In this case, the optical lens 1 has strong image stabilization capabilities.

[0828] In some embodiments, the ratio fa / fb of the focal length fa of the first lens L1 to the focal length fb of the second lens is -0.52. In this case, the first optical element G1 has strong image stabilization capability and reduces the aberration of the optical lens 1, that is, the optical lens 1 has strong image stabilization capability.

[0829] Please refer to Figures 62 and 63. Figure 62 is an axial chromatic aberration diagram of the camera module 30 shown in Figure 60, and Figure 63 is a distortion diagram of the camera module 30 shown in Figure 60.

[0830] Figure 62 shows axial chromatic aberration curves corresponding to different wavelengths of the system (650nm, 610nm, 555nm, 510nm, 470nm, and 435nm). Physically, it represents the deviation of light of the corresponding wavelength emitted at a 0-degree field of view from the ideal image point after passing through the optical system. The horizontal axis represents the deviation along the optical axis, and the vertical axis represents the normalized coordinates at the pupil. The values ​​shown in Figure 62 are all relatively small, indicating good correction of on-axis aberrations (spherical aberration, chromatic aberration, etc.) in optical lens 1.

[0831] The distortion diagram shown in Figure 63 is used to characterize the relative deviation between the beam convergence point (actual image height) and the ideal image height in different fields of view. In the distortion diagram shown in Figure 63, the relative deviation is within 1%, which ensures that there is no obvious distortion in the image.

[0832] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other, and any combination of features in different embodiments is also within the protection scope of this application. That is to say, the multiple embodiments described above can also be arbitrarily combined according to actual needs.

[0833] It should be noted that all the above figures are exemplary illustrations of this application and do not represent the actual size of the product. Furthermore, the dimensional proportions between the components in the figures are not intended to limit the actual product of this application.

[0834] The above are merely some embodiments and implementation methods of this application. The scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

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

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

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

3.

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

5.

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

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

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

9.

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

2.

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

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

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

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

8.

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

3.

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

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

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

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

3.

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

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

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

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

Images