Optical lens, camera module, and electronic device

Abstract

Provided are an optical lens (10), a camera module (300), and an electronic device (1000). The optical lens (10) comprises a reflector group (1), a first turning element group (2), a first lens group (3a), and a second lens group (3b) that are sequentially arranged from an object side to an image side, the first turning element group (2) being configured to change an optical axis in a first direction to a second direction. Light enters the first turning element group (2) after being reflected at least twice in the reflector group (1); and the light enters the first lens group (3a) after being reflected at least once in the first turning element group (2). During focusing of the optical lens (10), the first lens group (3a) and / or the second lens group (3b) move in the second direction, and the distance between the first lens group (3a) and the second lens group (3b) increases. Since the focusing manner of the optical lens (10) is group focusing, the optical lens (10) can achieve macro imaging at a super-telephoto end by means of small focusing strokes of the first lens group (3a) and the second lens group (3b), facilitating the miniaturization of the optical lens (10) capable of super-telephoto photography.

Description

Optical lenses, camera modules and electronic devices

[0001] This application claims priority to Chinese Patent Application No. 202510147208.4, filed on February 10, 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 lenses, and in particular to an optical lens, a camera module, and an electronic device. Background Technology

[0003] With the continuous development of portable electronic devices such as mobile phones, users have increasingly higher requirements for the photographic performance of the optical lenses of these devices. To meet users' needs for shooting distant objects, super telephoto camera modules have become an indispensable part of electronic devices. However, due to the long focal length of super telephoto camera modules, the entire lens needs to move to achieve focus when focusing on close-up objects, resulting in a large focusing distance and a large size for super telephoto camera modules. Summary of the Invention

[0004] This application provides an optical lens, camera module, and electronic device that can have a small focusing range and a small size.

[0005] In a first aspect, this application provides an optical lens comprising a mirror group, a first reversing element group, a first lens group, and a second lens group arranged sequentially from the object side to the image side. The first reversing element group is used to change the optical axis from a first direction to a second direction, wherein the first direction and the second direction are different. The mirror group includes an incident surface and an exit surface, with the exit surface of the mirror group facing the first reversing element group. Light enters the interior of the mirror group through the incident surface, undergoes at least two reflections within the mirror group, and then exits the mirror group through the exit surface and enters the first reversing element group. The first reversing element group includes an incident surface and an exit surface, and the first reversing element group... The incident surface of the element group faces the mirror group. After passing through the mirror group, the light enters the interior of the first bending element group through the incident surface of the first bending element group, and after at least one reflection within the first bending element group, it exits the first bending element group through the exit surface of the first bending element group and enters the first lens group. During the focusing process of the optical lens, the first lens group moves along the second direction, and the distance between the first lens group and the second lens group increases; or, the second lens group moves along the second direction, and the distance between the first lens group and the second lens group increases; or, the first lens group and the second lens group move along the second direction, and the distance between the first lens group and the second lens group increases.

[0006] Understandably, the mirror group can deflect light entering the optical lens, allowing the light to undergo at least two reflections within the mirror group. On one hand, this increases the total length of the light path, which is beneficial for achieving ultra-telephoto shooting with the optical lens. On the other hand, increasing the total length of the light path through reflection can reduce the physical length and height of the optical lens, which is beneficial for achieving a compact optical lens design, thereby reducing the height of the optical lens and ultimately enabling a miniaturized optical lens design.

[0007] It is understandable that the light reflected by the mirror group undergoes at least one reflection within the first reversing element group, which increases the total length of the optical path. Through the cooperation between the first reversing element group and the mirror group, the total length of the optical path can be further increased, thereby further facilitating ultra-telephoto shooting with the optical lens. Furthermore, since the first reversing element group increases the total length of the optical path through reflection, the overall size of the optical lens can remain relatively small, which is beneficial for miniaturizing the optical lens.

[0008] Understandably, this is because optical lenses use group focusing. This allows the lens to achieve macro imaging at the super-telephoto end through the relatively short focusing distances of the first and second lens groups, thus improving the focusing performance of super-telephoto lenses in macro mode and resulting in higher image quality. Simultaneously, the shorter focusing distance of super-telephoto lenses allows for smaller size, facilitating miniaturization of such lenses.

[0009] In one possible implementation, during the focusing process, the first lens group is a fixed lens group, and the second lens group moves along a second direction; or, during the focusing process, the first lens group moves along a second direction, and the second lens group is a fixed lens group.

[0010] Understandably, since the first lens group can be a fixed lens group and the second lens group can move along the optical axis in the second direction, or the second lens group can be a fixed lens group and the first lens group can move along the second direction, the focusing method of the optical lens is group focusing. In this way, the optical lens can achieve super-telephoto macro imaging through the shorter focusing distance of the second lens group, thereby improving the focusing performance of optical lenses capable of super-telephoto shooting in macro mode, resulting in higher image quality for super-telephoto shooting optical lenses. Simultaneously, because the focusing distance of optical lenses capable of super-telephoto shooting is shorter, their size is smaller, which is beneficial for miniaturizing super-telephoto shooting optical lenses.

[0011] In one possible implementation, the second direction includes a first sub-direction and a second sub-direction with opposite directions. The first sub-direction is the direction in which the second lens group points to the first lens group. During the process of the optical lens focusing to the macro state at infinity, the first lens group is a fixed lens group and the second lens group moves along the second sub-direction, or the first lens group moves along the first sub-direction and the second lens group is a fixed lens group.

[0012] Understandably, since the first lens group can be a fixed lens group and the second lens group can move along the optical axis of a first sub-direction or a second sub-direction, or the second lens group can be a fixed lens group and the first lens group can move along the optical axis of a first sub-direction or a second sub-direction, the focusing method of the optical lens is group focusing. In this way, the optical lens can achieve super-telephoto macro imaging through the shorter focusing distance of the second lens group, thereby improving the focusing performance of the optical lens capable of super-telephoto shooting in macro mode, resulting in higher image quality. At the same time, because the focusing distance of the optical lens capable of super-telephoto shooting is shorter, its size is smaller, which is beneficial for miniaturizing the optical lens capable of super-telephoto shooting.

[0013] In one possible implementation, the second direction includes a first sub-direction and a second sub-direction with opposite directions. The first sub-direction is the direction in which the second lens group points to the first lens group. During the process of focusing the optical lens to infinity in macro mode, the first lens group is a fixed lens group and the second lens group moves along the first sub-direction, or the first lens group moves along the second sub-direction and the second lens group is a fixed lens group.

[0014] Understandably, since the first lens group can be a fixed lens group and the second lens group can move along the optical axis of a first sub-direction or a second sub-direction, or the second lens group can be a fixed lens group and the first lens group can move along the optical axis of a first sub-direction or a second sub-direction, the focusing method of the optical lens is group focusing. In this way, the optical lens can achieve super-telephoto macro imaging through the shorter focusing distance of the second lens group, thereby improving the focusing performance of the optical lens capable of super-telephoto shooting in macro mode, resulting in higher image quality. At the same time, because the focusing distance of the optical lens capable of super-telephoto shooting is shorter, its size is smaller, which is beneficial for miniaturizing the optical lens capable of super-telephoto shooting.

[0015] In one possible implementation, the optical lens satisfies: 0.01 < |EFLg2 / EFLi| < 0.8, where EFLg2 is the focal length of the second lens group and EFLi is the focal length of the optical lens at a distance.

[0016] Understandably, by setting the absolute value of the ratio of the focal length of the second lens group to the focal length of the optical lens at a distance, |EFLg2 / EFLi|, within the range of 0.01 to 0.8, optical lenses capable of super telephoto shooting can achieve a shorter focusing throw. This helps reduce the size of optical lenses capable of super telephoto shooting, thus facilitating the miniaturization of such lenses. Simultaneously, the sharpness of the optical lens is less likely to degrade rapidly when focusing deviates.

[0017] In one possible implementation, the optical lens satisfies: 0.01 < |EFLg2 / EFLi| < 0.4.

[0018] Understandably, by setting the absolute value of the ratio of the focal length of the second lens group to the focal length of the optical lens at a distance, |EFLg2 / EFLi|, within the range of 0.01 to 0.4, optical lenses capable of super telephoto shooting can achieve a shorter focusing throw. This helps reduce the size of optical lenses capable of super telephoto shooting, thus facilitating the miniaturization of such lenses. Simultaneously, the sharpness of the optical lens is less likely to degrade rapidly when focusing deviates.

[0019] In one possible implementation, the optical lens satisfies: 0.05 < |EFLg2 / EFLg1| < 2, where EFLg1 is the focal length of the first lens group.

[0020] Understandably, by setting the absolute value of the ratio of the focal length of the second lens group to that of the first lens group, |EFLg2 / EFLg1|, within the range of 0.05 to 2, optical lenses capable of super telephoto shooting can achieve a shorter focusing distance. This helps reduce the size of such lenses, thus facilitating their miniaturization. Simultaneously, the lens's sharpness is less likely to degrade rapidly when focusing deviates.

[0021] In one possible implementation, the optical lens satisfies: 0.1 < |EFLg2 / EFLg1| < 1.

[0022] It is understandable that by setting the absolute value of the ratio of the focal length of the second lens group to that of the first lens group, |EFLg2 / EFLg1|, within the range of 0.1 to 1, optical lenses capable of super telephoto shooting can achieve a shorter focusing distance. This helps to reduce the size of optical lenses capable of super telephoto shooting, thereby facilitating the miniaturization of such lenses. Simultaneously, the sharpness of the optical lens is less likely to degrade rapidly when focusing deviates.

[0023] In one possible implementation, the optical lens satisfies: 0.1 < FLg2f / EFLg2 < 10, where FLg2f is the focal length of the lens closest to the object side in the second lens group.

[0024] It is understandable that by setting the ratio of the focal length of the lens closest to the object side in the second lens group to the focal length of the second lens group (FLg2f / EFLg2) within the range of 0.1 to 10, optical lenses capable of super telephoto shooting can achieve a shorter focusing distance. This helps to reduce the size of optical lenses capable of super telephoto shooting, thereby facilitating the miniaturization of such lenses. Simultaneously, it improves image quality at close object distances.

[0025] In one possible implementation, the optical lens satisfies: 0.3 < FLg2f / EFLg2 < 5.

[0026] It is understandable that by setting the ratio of the focal length of the lens closest to the object side in the second lens group to the focal length of the second lens group (FLg2f / EFLg2) within the range of 0.3 to 5, optical lenses capable of super telephoto shooting can achieve a shorter focusing distance. This helps to reduce the size of optical lenses capable of super telephoto shooting, thereby facilitating the miniaturization of such lenses. Simultaneously, it improves image quality at close object distances.

[0027] In one possible implementation, the optical lens satisfies: L > 100mm, where L is the focusing distance of the optical lens.

[0028] It is understandable that setting the focusing distance of the optical lens to be greater than 100mm facilitates shooting at the ultra-telephoto end of the optical lens. Furthermore, compared to optical lenses that achieve focusing by moving the entire lens, the focusing method of the optical lens in this embodiment involves moving the first or second lens group in groups. At the same focusing distance, the focusing travel of this embodiment is shorter, which is beneficial for achieving macro imaging at the ultra-telephoto end and resulting in higher image quality.

[0029] In one possible implementation, the optical lens satisfies: EFLm < EFLi, where EFLm is the focal length of the optical lens at close object distance.

[0030] It is understandable that by setting the focal length of the optical lens at close object distance to be smaller than that at distant object distance, aberrations at close object distance can be reduced, thereby achieving better image quality at close object distance.

[0031] In one possible implementation, the optical lens satisfies: 1.5 < Din / DRFo < 8, where Din is the light inlet diameter of the mirror group and DRFo is the light outlet diameter of the mirror group.

[0032] It is understandable that by setting the ratio of the light inlet diameter to the light outlet diameter of the mirror group, Din / DRFo, within the range of 1.5 to 8, rapid focusing of the imaging beam can be achieved, which is beneficial for achieving a thinner optical lens capable of ultra-telephoto shooting, thereby facilitating the miniaturization of optical lenses capable of ultra-telephoto shooting.

[0033] In one possible implementation, the optical lens satisfies: 0.15 < Dg2l1 / Din < 0.7, where Dg2l1 is the aperture of the lens closest to the object side in the second lens group.

[0034] It is understandable that by setting the ratio of the light-transmitting aperture of the lens closest to the object side of the second lens group to the light-inlet aperture of the mirror group, Dg2l1 / Din, within the range of 0.15 to 0.7, off-axis aberrations can be reduced, achieving better imaging results at close range while maintaining high energy transmission through the mirror group and the second lens group.

[0035] In one possible implementation, the optical lens satisfies: ImH > 2mm, where ImH is the image height of the optical lens.

[0036] It is understandable that by setting the image height ImH of the optical lens to be greater than 2mm, the optical lens can achieve higher image quality for super telephoto shooting.

[0037] In one possible implementation, the optical lens satisfies: FOV < 30°, where FOV is the full field of view of the optical lens.

[0038] Understandably, by setting the field of view (FOV) of the optical lens to less than 30°, distortion and falsification at the image edges can be reduced or avoided. Furthermore, a smaller FOV and a smaller field of view, coupled with a larger optical magnification, better meet the requirements of ultra-telephoto lens designs.

[0039] In one possible implementation, the mirror group includes a first reflecting lens, which has an object-side side and an image-side side. The image-side side of the first reflecting lens faces the first group of transition elements. Light enters the interior of the first reflecting lens from the object-side side, undergoes at least two reflections inside the first reflecting lens, and then exits the first reflecting lens from the image-side side and enters the first group of transition elements.

[0040] Understandably, the first reflecting lens can deflect light entering the optical lens, causing the light to undergo at least two reflections within the lens. On one hand, this increases the total length of the light path, which is beneficial for achieving ultra-telephoto shooting with the optical lens. On the other hand, increasing the total length of the light path through reflection can reduce the physical length and height of the optical lens, facilitating a compact design and thus reducing its height, ultimately leading to miniaturization.

[0041] In one possible implementation, the mirror group includes a first reflecting lens and a second reflecting lens. The first reflecting lens includes an object-side side and an image-side side, and the second reflecting lens also includes an object-side side and an image-side side. The image-side side of the first reflecting lens faces the object-side side of the second reflecting lens, and the image-side side of the second reflecting lens faces the first deflection element group. Light enters the interior of the first and second reflecting lenses from the object-side side of the first reflecting lens. After at least two reflections occur inside the first and second reflecting lenses, light exits from the second reflecting lens from the image-side side of the second reflecting lens and enters the first deflection element group.

[0042] Understandably, the first and second reflecting lenses can deflect light entering the optical lens, causing the light to undergo at least two reflections within them. On one hand, this increases the total length of the light path, which is beneficial for achieving ultra-telephoto shooting with the optical lens. On the other hand, increasing the total length of the light path through reflection reduces the physical length and height of the optical lens, facilitating a compact design and thus reducing its height, ultimately leading to miniaturization.

[0043] In one possible implementation, the optical lens further includes a second group of transition elements located on the image side of the second lens group. The second group of transition elements includes an incident surface and an exit surface. The incident surface of the second group of transition elements faces the second lens group. After passing through the second lens group, the light is emitted from the second lens group and enters the second group of transition elements. After undergoing at least one reflection within the second group of transition elements, the light exits the second group of transition elements from the exit surface.

[0044] It is understandable that the light rays converged by the first and second lens groups can undergo at least one reflection within the second reversing element group, which increases the total length of the optical path. Through the cooperation between the second reversing element group, the reflecting mirror group, and the first reversing element group, the total length of the optical path can be further increased, thereby further facilitating the shooting at the ultra-telephoto end of the optical lens. In addition, since the second reversing element group increases the total length of the optical path through reflection, the overall size of the optical lens can be kept relatively small, which is beneficial for achieving miniaturized optical lens designs.

[0045] In one possible implementation, the second deflection element group further includes a reflective surface. The reflective surface of the second deflection element group is connected between the incident surface and the exit surface of the second deflection element group. Light enters the second deflection element group from the incident surface, undergoes one reflection on the reflective surface, and then exits the second deflection element group from the exit surface.

[0046] It is understandable that the light rays converged by the first and second lens groups can undergo a single reflection on the reflective surface of the second reflex element group, which increases the total length of the optical path. Through the cooperation between the second reflex element group, the reflecting mirror group, and the first reflex element group, the total length of the optical path can be further increased, thereby further facilitating the shooting at the ultra-telephoto end of the optical lens. In addition, since the second reflex element group increases the total length of the optical path through reflection, the overall size of the optical lens can be kept relatively small, which is beneficial for miniaturizing the optical lens.

[0047] In one possible implementation, the second deflection element group further includes a reflective surface. The reflective surface of the second deflection element group is connected between the incident surface and the exit surface of the second deflection element group. Light enters the second deflection element group from the incident surface, undergoes two reflections in sequence at the exit surface and the reflective surface of the second deflection element group, and then exits the second deflection element group from the exit surface.

[0048] It is understandable that the light rays converged by the first and second lens groups can undergo two reflections, sequentially at the exit surface and the reflective surface of the second reversing element group, thereby increasing the total length of the optical path. Through the cooperation between the second reversing element group, the reflecting mirror group, and the first reversing element group, the total length of the optical path can be further increased, thus further facilitating ultra-telephoto shooting with the optical lens. Furthermore, since the second reversing element group increases the total length of the optical path through reflection, the overall size of the optical lens can remain relatively small, which is beneficial for miniaturizing the optical lens.

[0049] In one possible implementation, the first group of transition elements includes one or more transition prisms; or the first group of transition elements includes a transition prism and at least one lens.

[0050] It is understandable that the light reflected by the mirror group undergoes at least one reflection within the first group of deflecting elements, which can increase the total length of the optical path.

[0051] In one possible implementation, the incident surface of the first deflection element group is convex near the optical axis, and the exit surface of the first deflection element group is concave near the optical axis.

[0052] It is understandable that the incident surface of the first transition element group can collect light, and the exit surface of the first transition element group can compensate for aberrations, which is conducive to reducing the module size of the optical lens and realizing the miniaturization of the optical lens.

[0053] Secondly, this application provides a camera module, which includes an image sensor and an optical lens as described above, wherein the image sensor is located on the image side of the optical lens.

[0054] Understandably, camera modules have a small focusing range and a small size.

[0055] In one possible implementation, the camera module satisfies: 5mm < H < 20mm, where H is the relative height of the camera module.

[0056] Understandably, by setting the relative height H of the camera module within the range of 5mm to 20mm, the camera module capable of super telephoto shooting has a smaller relative height and a smaller size, which is conducive to miniaturizing the camera module capable of super telephoto shooting and making it easier to apply the camera module to thinner electronic devices (such as mobile phones).

[0057] In one possible implementation, the camera module satisfies: 8mm < LA < 80mm, where LA is the relative length of the camera module.

[0058] Understandably, by setting the relative length LA of the camera module within the range of 8mm to 80mm, the relative length of the camera module capable of super telephoto shooting is smaller, and the size of the camera module capable of super telephoto shooting is smaller. This is conducive to the miniaturization of the camera module capable of super telephoto shooting, and is beneficial for the application of the camera module in thinner electronic devices (such as mobile phones).

[0059] Thirdly, this application provides an electronic device, which includes an image processor and a camera module as described above. 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.

[0060] Understandably, camera modules have a small focusing range and a small size. Attached Figure Description

[0061] Figure 1 is a schematic diagram of the structure of the electronic device provided in one embodiment of this application;

[0062] Figure 2 is a partial cross-sectional view of one embodiment of the electronic device shown in Figure 1 at line AA;

[0063] Figure 3 is a simplified schematic diagram of a partial structure of one embodiment of the camera module shown in Figure 2 at infinity.

[0064] Figure 4 is a partial structural simplified diagram of one embodiment of the camera module shown in Figure 3 in macro mode;

[0065] Figure 5 is a simulation effect diagram of the camera module at infinity in the first embodiment;

[0066] Figure 6 is a simulation effect diagram of the camera module in macro mode according to the first embodiment;

[0067] Figure 7 is a simulation effect diagram of the camera module at infinity in the first embodiment;

[0068] Figure 8 is a simulation effect diagram of the camera module in macro mode in the first embodiment;

[0069] Figure 9 is a simulation effect diagram of the camera module at infinity in the first embodiment;

[0070] Figure 10 is a simulation effect diagram of the camera module in macro mode in the first embodiment;

[0071] Figure 11 is a simplified schematic diagram of a portion of the camera module shown in Figure 2 in another embodiment;

[0072] Figure 12 is a simplified schematic diagram of a partial structure of one embodiment of the camera module shown in Figure 11 in macro mode;

[0073] Figure 13 is a simulation effect diagram of the camera module at infinity in the second embodiment;

[0074] Figure 14 is a simulation effect diagram of the camera module in macro mode according to the second embodiment;

[0075] Figure 15 is a simulation effect diagram of the camera module at infinity in the second embodiment;

[0076] Figure 16 is a simulation effect diagram of the camera module in macro mode in the second embodiment;

[0077] Figure 17 is a simulation effect diagram of the camera module at infinity in the second embodiment;

[0078] Figure 18 is a simulation effect diagram of the camera module in macro mode under the second embodiment;

[0079] Figure 19 is a simplified schematic diagram of a portion of the camera module shown in Figure 2 in another embodiment;

[0080] Figure 20 is a simplified schematic diagram of part of the camera module shown in Figure 19 in macro mode;

[0081] Figure 21 is a simulation effect diagram of the camera module at infinity in the third embodiment;

[0082] Figure 22 is a simulation effect diagram of the camera module in macro mode according to the third embodiment;

[0083] Figure 23 is a simulation effect diagram of the camera module at infinity in the third embodiment;

[0084] Figure 24 is a simulation effect diagram of the camera module in macro mode under the third embodiment;

[0085] Figure 25 is a simulation effect diagram of the camera module at infinity in the third embodiment;

[0086] Figure 26 is a simulation effect diagram of the camera module in macro mode in the third embodiment;

[0087] Figure 27 is a simplified schematic diagram of part of the structure of the camera module shown in Figure 2 in another embodiment;

[0088] Figure 28 is a simplified schematic diagram of part of the camera module shown in Figure 27 in macro mode;

[0089] Figure 29 is a simulation effect diagram of the camera module at infinity in the fourth embodiment;

[0090] Figure 30 is a simulation effect diagram of the camera module in macro mode according to the fourth embodiment;

[0091] Figure 31 is a simulation effect diagram of the camera module at infinity in the fourth embodiment;

[0092] Figure 32 is a simulation effect diagram of the camera module in macro mode under the fourth embodiment;

[0093] Figure 33 is a simulation effect diagram of the camera module at infinity in the fourth embodiment;

[0094] Figure 34 is a simulation effect diagram of the camera module in macro mode according to the fourth embodiment. Detailed Implementation

[0095] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0096] In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," and "joint" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an electrical connection or a mechanical connection. Among them, "fixed connection" refers to a connection between two objects in which their relative positional relationship remains unchanged after the connection.

[0097] The directional terms mentioned in the embodiments of this application, such as "inner" and "outer," 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.

[0098] 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.

[0099] 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:

[0100] The optical axis is an axis that passes through the center of each lens.

[0101] With the lens as the boundary, 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.

[0102] With the lens as the boundary, the side on which the image of the object is located is called the image side, and the surface of the lens closest to the image side is called the image-side surface.

[0103] Focal length, also known as focal length, is a measure in optical systems of the convergence or divergence of light. It refers to the perpendicular distance from the optical center of a lens or optical component 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 image plane. For fixed-focus lenses, the position of their optical center remains constant.

[0104] The focal length (EFL) of the optical lens 10 is defined as the distance from the center of the optical lens 10 to the focal point.

[0105] The Abbe number (Vd), 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.

[0106] The imaging height (ImH) of the imaging surface represents half the diagonal length of the effective pixel area on the image sensor 20, which is also the radius of the imaging circle.

[0107] The super telescopic end is the longest focal length of the lens, with the smallest angle of view. It is used to shoot distant scenes, especially close-ups.

[0108] Aperture number (F-number, Fno) is a relative value derived from the lens's focal length and the diameter of its aperture (the reciprocal of the relative aperture). A smaller F-number allows more light to enter the lens in the same unit of time. A larger F-number results in a smaller aperture, a greater depth of field, and less noticeable bokeh in the photograph.

[0109] The field of view (FOV) in optical instruments is the angle between the two edges of the lens that allow the image of the target object to pass through the lens to its maximum extent. 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.

[0110] Longitudinal spherical aberration (LSA), also known as longitudinal chromatic aberration, positional chromatic aberration, or axial aberration, is a common aberration in optical systems. It describes the phenomenon where light, after refraction or reflection from different areas of a lens or mirror, does not focus on the same plane, resulting in a blurred image. Specifically, longitudinal spherical aberration refers to the deviation of the image point along the optical axis, causing light rays with different incident angles to focus at different positions. In other words, light rays from different areas do not converge at the same focal point, but rather form a series of focal points along the optical axis. This results in the image planes of different colors of light not coinciding during final imaging, causing polychromatic light to scatter and form chromatic aberration.

[0111] 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.

[0112] Astigmatic field curves describe the changes in the position of the focal plane caused by astigmatism in an optical system. Astigmatism is a common optical aberration that causes light rays passing through an optical system to focus at different positions in the vertical and horizontal directions, thus forming two distinct focal planes in an image: one called the sagittal plane and the other the tangential plane.

[0113] The Meridian Plane is the plane formed by the principal ray (principal beam) of an object point outside the optical axis and the optical axis.

[0114] 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.

[0115] Field curvature is used to represent the difference in the optical axis between the position of the sharpest image point after rays from the non-central field of view pass through 10 groups of optical lenses and the position of the sharpest image point in the central 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.

[0116] 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.

[0117] Figure 1 is a schematic diagram of the structure of the electronic device 1000 provided in one embodiment of this application.

[0118] As shown in Figure 1, in some embodiments, the electronic device 1000 can be a mobile phone, tablet personal computer, laptop computer, personal digital assistant (PDA), camera, personal computer, laptop computer, in-vehicle equipment, wearable device, augmented reality (AR) glasses, AR helmet, virtual reality (VR) glasses or VR helmet, or other devices with photography and video recording functions. The electronic device 1000 in the embodiment shown in Figure 1 is illustrated using a mobile phone as an example.

[0119] Figure 2 is a partial cross-sectional view of one embodiment of the electronic device 1000 shown in Figure 1 at line AA.

[0120] As shown in Figure 2, and in conjunction with Figure 1, the electronic device 1000 includes a screen 100, a housing 200, a camera module 300, an image processor 400, and an analog-to-digital converter 500. In other embodiments, the electronic device 1000 may include more or fewer structures. For example, when the electronic device 1000 includes more structures, it may also include a circuit board (not shown in the figures). When the electronic device 1000 includes fewer structures, it may not include the screen 100. It is understood that Figures 1 and 2 only schematically illustrate some components included in the electronic device 1000, and the actual shape, size, location, and construction of these components are not limited by Figures 1 and 2.

[0121] For example, the screen 100 can be fixed to the housing 200. The screen 100 can be used to display images to meet the user's needs. The display layer can be a liquid crystal display or an organic light-emitting diode display, etc. The screen 100 and the housing 200 can together enclose the interior of the electronic device 1000. The interior of the electronic device 1000 can be used to house components of the electronic device 1000, such as batteries, receivers, or microphones. The screen 100 can be a flat screen or a curved screen.

[0122] It is understood that, for ease of description, the electronic device 1000 is defined in the following text as having a first direction, a second direction, and a third direction. The first direction can be the thickness direction of the electronic device 1000, the second direction can be the length direction of the electronic device 1000, the second direction is perpendicular to the first direction, and the third direction can intersect with the first and second directions. In other embodiments, the coordinate system of the electronic device 1000 can be flexibly set according to specific actual needs.

[0123] For example, the camera module 300 can be installed inside the housing 200, and the light-incident side of the camera module 300 can be set to face away from the screen 100 to serve as a rear camera of the electronic device 1000.

[0124] For example, the housing 200 may have a light-transmitting portion 201. The shape of the light-transmitting portion 201 is not limited to the circle shown in Figure 1, but may also be elliptical or irregular in shape. The light-transmitting portion 201 connects the interior of the electronic device 1000 to the exterior of the electronic device 1000. Light from the exterior of the electronic device 1000 can enter the interior of the electronic device 1000 through the light-transmitting portion 201, and it is dustproof and waterproof. The camera module 300 can collect light from the exterior of the electronic device 1000 through the light-transmitting portion 201 to capture pictures or videos.

[0125] In other embodiments, the light-incident side of the camera module 300 can face the side where the screen 100 is located, serving as a front-facing transparent camera of the electronic device 1000. Both the front-facing and rear-facing cameras can be used for selfies or for the photographer to take pictures of other objects.

[0126] It is understood that the installation position of the camera module 300 in the electronic device 1000 of the embodiment shown in FIG1 is merely illustrative, and this application does not strictly limit the installation position of the camera module 300. In some other embodiments, the camera module 300 may also be installed in other positions of the electronic device 1000, for example, the camera module 300 may be installed in the upper middle or upper right corner of the back of the electronic device 1000. In some other embodiments, the electronic device 1000 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 300 may also be disposed on the auxiliary component.

[0127] For example, the image processor 400 can be communicatively connected to the camera module 300. The image processor 400 can acquire and process image data from the camera module 300. The communication connection between the camera module 300 and the image processor 400 can include data transmission via electrical connections such as wiring, or data transmission via coupling. It is understood that the camera module 300 and the image processor 400 can also achieve a communication connection through other methods capable of data transmission.

[0128] The image processor 400 may include multiple processing modules that can convert the raw image signals captured by the camera module 300 into image information, and transmit the processed information to the screen 100 for display of the image or video. The image processor 400 may be an image processing chip or a digital signal processing chip, used to adjust the color of the image, perform noise reduction processing, and further improve the image quality.

[0129] In this embodiment, the working principle of the camera module 300 in the electronic device 1000 is as follows: light reflected from the subject enters the interior of the camera module 300, generating an optical image that is projected onto the surface of the image sensor 20 of the camera module 300. The image sensor 20 converts the optical image into an electrical signal, i.e., an analog image signal, and transmits the converted analog image signal to the analog-to-digital converter 500, which converts it into a digital image signal for the image processor 400. The image processor 400 can process and convert the original image signal captured by the camera module 300 to form image information, and transmit the processed information to the display module of the screen 100 for display of the image or video. In other embodiments, the electronic device 1000 may also include a memory (not shown in the figures). The image processor 400 can process the digital image signal and transmit the image to the memory so that the image can be retrieved from the memory and displayed on the screen 100 when it is needed to view the image later.

[0130] Figure 1 is merely a schematic diagram illustrating the structure of an electronic device 1000. The dimensions, quantity, and position of the camera module 300, image processor 400, and analog-to-digital converter 500 shown in Figure 1 are only schematic representations and can be adjusted as needed; this application does not impose any limitations on them.

[0131] It is understood that the number of camera modules 300 can be one or at least two. When there is only one camera module 300, it can be used as a front-facing camera or a rear-facing camera. When there are at least two camera modules 300, they can be telephoto camera modules 300, wide-angle camera modules 300, etc., to meet different shooting needs, and this application does not limit this.

[0132] As shown in Figure 2, exemplarily, the camera module 300 may include an optical lens 10, an image sensor 20, and a filter 30. Light reflected from the subject is refracted by the optical lens 10, passes through the filter 30, and then enters the image sensor 20 to form an image. It is understood that Figure 2 and the related figures below only schematically show some components included in the camera module 300, and the actual shape, size, position, and construction of these components are not limited to Figure 2 and the figures below. It is understood that the camera module 300 may also include fewer or more structures. For example, the camera module 300 may include fewer structures; exemplarily, the camera module 300 may not include the filter 30. The camera module 300 may also include more structures, such as a lens holder (not shown in the figures).

[0133] The image sensor 20 can be located on the image side of the optical lens 10. The image sensor 20 is a semiconductor chip, also known as a photosensitive chip. The surface of the image sensor 20 contains hundreds of thousands to millions of photodiodes, which generate electrical charges when illuminated. The image sensor 20 utilizes the photoelectric conversion function of optoelectronic devices to convert the light image on its photosensitive surface into an electrical signal proportional to the light image. The photosensitive surface of the image sensor 20 faces the optical lens 10. The image sensor 20 can be a charge-coupled device (CCD), complementary metal-oxide-semiconductor (CMOS), phototransistor, or thin-film transistor, etc.

[0134] For example, the filter 30 can be located between the optical lens 10 and the image sensor 20. Light passing through the optical lens 10 is incident on the filter 30 and filtered by the filter 30 before being imaged on the image sensor 20. For example, the filter 30 can be an infrared filter 30. The filter 30 can eliminate unwanted wavelengths of light projected onto the image sensor 20, preventing the image sensor 20 from producing false colors or ripples, thereby improving its effective resolution and color reproduction.

[0135] In some embodiments, the camera module 300 may omit the filter 30 and instead achieve filtering by surface treatment or material treatment of at least one optical element of the optical lens 10. This application does not strictly limit the specific embodiments of the structural components or structures used to achieve filtering.

[0136] The following is an example illustrating the implementation scheme of the optical lens 10 in the camera module 300 shown in Figure 2.

[0137] Figure 3 is a simplified schematic diagram of a partial structure of one embodiment of the camera module 300 shown in Figure 2 at infinity.

[0138] As shown in Figures 2 and 3, exemplarily, the optical lens 10 may include a mirror group 1, a first refractive element group 2, a first lens group 3a, a second lens group 3b, and a second refractive element group 4 arranged sequentially from the object side to the image side. It is understood that Figures 2, 3, and the related figures below only schematically illustrate some components of the optical lens 10, and the actual shape, size, position, and construction of these components are not limited by Figures 2, 3, and the figures below. In other embodiments, the optical lens 10 may include more or fewer structures. For example, when the optical lens 10 includes more structures, it may also include an aperture stop (not shown). When the optical lens 10 includes fewer structures, it may not include the second refractive element group 4.

[0139] For example, light entering the optical lens 10 can sequentially pass through the mirror group 1, the first deflection element group 2, the first lens group 3a, the second lens group 3b, and the second deflection element group 4. It is understood that the first direction and the second direction can be different; the first direction can be the optical axis direction of the mirror group 1, and the second direction can be the optical axis direction of the first lens group 3a and the second lens group 3b. The first deflection element group 2 can be used to change the optical axis from the first direction to the second direction.

[0140] For example, the mirror assembly 1 includes an incident surface 1a and an exit surface 1b. The exit surface 1b of the mirror assembly 1 is disposed facing the first lens assembly 3a. Light enters the interior of the mirror assembly 1 through the incident surface 1a, undergoes at least two reflections inside the mirror assembly 1, and exits the mirror assembly 1 through the exit surface 1b and enters the first deflection element group 2.

[0141] It is understandable that the mirror group 1 can deflect the light entering the optical lens 10, and the light can be reflected at least twice inside the mirror group 1. On the one hand, the total length of the light path is increased, which is beneficial to realize the ultra-telephoto end shooting of the optical lens 10. On the other hand, by increasing the total length of the light path through reflection, the physical length and height of the optical lens 10 can be reduced, which is beneficial to realize the compact setting of the optical lens 10, thereby reducing the height of the optical lens 10 and thus realizing the miniaturization of the optical lens 10.

[0142] For example, the first lens group 3a may include at least two lenses. The second lens group 3b may also include at least two lenses. In other embodiments, the first lens group 3a may also include one lens. The second lens group 3b may also include one lens. This application does not specifically limit the scope of the embodiments.

[0143] Figure 4 is a partial structural simplified diagram of one embodiment of the camera module 300 shown in Figure 3 in macro mode.

[0144] As shown in Figures 3 and 4, exemplarily, during the focusing process of the optical lens 10, the first lens group 3a can move along the second direction, and the distance between the first lens group 3a and the second lens group 3b increases. Alternatively, during the focusing process of the optical lens 10, the second lens group 3b can move along the second direction, and the distance between the first lens group 3a and the second lens group 3b increases. Alternatively, during the focusing process of the optical lens 10, the first lens group 3a and the second lens group 3b move simultaneously along the second direction, and the distance between the first lens group 3a and the second lens group 3b increases.

[0145] Understandably, since the optical lens 10 uses group focusing, it can achieve macro imaging at the super-telephoto end through the short focusing distance of the first lens group 3a and the second lens group 3b. This improves the focusing performance of the optical lens 10 in macro mode, resulting in higher image quality. Furthermore, the shorter focusing distance of the optical lens 10 allows for a smaller size, facilitating miniaturization.

[0146] For example, the camera module 300 may include a focusing drive mechanism (not shown), which may be connected to the first lens group 3a and the second lens group 3b. The focusing drive mechanism can be used to drive the first lens group 3a and the second lens group 3b to move along the optical axis of the second direction. It is understood that there may also be two focusing drive mechanisms, one driving the first lens group 3a to move along the optical axis of the second direction, and the other driving the second lens group 3b to move along the optical axis of the second direction. In other embodiments, there may be one focusing drive mechanism, which is an integrated, single drive device that can simultaneously drive the first lens group 3a and the second lens group 3b to move along the optical axis of the second direction. The focusing drive mechanism may be a motor, such as a voice coil motor or a shape memory alloy motor.

[0147] In other embodiments, the optical lens 10 may also employ other focusing methods. This application does not specifically limit the method.

[0148] The following will describe in more detail some specific, but not limiting, examples of embodiments of this application with reference to the accompanying drawings.

[0149] First embodiment: As shown in Figures 3 and 4, the mirror assembly 1 includes a first reflecting lens 11. Exemplarily, the first reflecting lens 11 may include an object-side surface 11a and an image-side surface 11b facing away from each other. The incident surface 1a of the mirror assembly 1 may be located on the object-side surface 11a of the first reflecting lens 11, and the exit surface 1b of the mirror assembly 1 may be located on the image-side surface 11b of the first reflecting lens 11.

[0150] For example, light can enter the interior of the first reflecting lens 11 from the object side 11a, undergo at least two reflections inside the first reflecting lens 11, and then exit the first reflecting lens from the image side 11b and enter the first deflection element group 2. In one embodiment, after the light enters the first reflecting lens 11, it undergoes a first reflection on the image side 11b and a second reflection on the object side 11a.

[0151] Understandably, the first reflecting lens 11 can deflect light entering the optical lens 10, allowing the light to undergo two reflections within the first reflecting lens 11. On one hand, the increased total length of the light path facilitates ultra-telephoto shooting with the optical lens 10; on the other hand, increasing the total length of the light path through reflection reduces the physical length and height of the optical lens 10, enabling a compact design and thus reducing its height, ultimately achieving a miniaturized design.

[0152] In other embodiments, when the first reflecting lens 11 adopts other structures, light entering the first reflecting lens 11 may also undergo at least two reflections in other areas of the reflecting mirror group 1. This application does not specifically limit the details.

[0153] In other embodiments, the mirror assembly 1 may also adopt other structures. This application does not specifically limit the specific implementation.

[0154] As shown in Figures 3 and 4, exemplarily, the cross-section of the first bending element group 2 can be approximately triangular. In other embodiments, the cross-section of the first bending element group 2 can also be quadrilateral or other shapes. This application does not specifically limit the details.

[0155] For example, the first deflection element group 2 may include an incident surface 21, an exit surface 22, and a reflecting surface 23. The reflecting surface 23 of the first deflection element group 2 may be connected between the incident surface 21 and the exit surface 22 of the first deflection element group 2. The incident surface 21 of the first deflection element group 2 may be arranged facing the mirror group 1. After passing through the mirror group 1, the light enters the interior of the first deflection element group 2 through the incident surface 21, undergoes at least one reflection within the first deflection element group 2, exits the first deflection element group 2 through the exit surface 22, and enters the first lens group 3a.

[0156] It is understandable that the light reflected by the mirror group 1 undergoes at least one reflection within the first reversing element group 2, which increases the total length of the optical path. Through the cooperation between the first reversing element group 2 and the mirror group 1, the total length of the optical path can be further increased, thereby further facilitating the shooting at the ultra-telephoto end of the optical lens 10. Furthermore, since the first reversing element group 2 increases the total length of the optical path through reflection, the overall size of the optical lens 10 can be kept relatively small, which is beneficial for achieving a miniaturized design of the optical lens 10.

[0157] For example, the first deflection element group 2 can be a prism, a mirror, or other components with reflective function. The incident surface 21 and the exit surface 22 of the first deflection element group 2 can be optical surfaces such as planes, spheres, or aspherical surfaces. Specifically, this application does not limit the scope.

[0158] By way of example, Figures 2 to 4 and the related figures below schematically show that the first deflection element group 2 includes a deflection prism. In some embodiments, the first deflection element group 2 may also include multiple deflection prisms; in other words, the first deflection element group 2 may also include at least two deflection prisms. Alternatively, the first deflection element group 2 may include one deflection prism and at least one lens. Alternatively, the first deflection element group 2 may be an integrally formed structure of a deflection prism and a lens, wherein the incident surface 21 of the first deflection element group 2 may be convex near the optical axis, and the exit surface 22 of the first deflection element group 2 may be concave near the optical axis.

[0159] It is understandable that the light reflected by the mirror group 1 undergoes at least one reflection within the first deflection element group 2, and the first deflection element group 2 can increase the total length of the optical path.

[0160] It is understandable that the incident surface 21 of the first transition element group 2 can collect light, and the exit surface 22 of the first transition element group 2 can compensate for aberrations, thereby helping to reduce the module size of the optical lens 10 and realize the miniaturization of the optical lens 10.

[0161] In other embodiments, the incident surface 21 of the first deflection element group 2 may be concave near the optical axis, and the exit surface 22 of the first deflection element group 2 may be convex near the optical axis. This application does not specifically limit the details.

[0162] As shown in Figures 3 and 4, by way of example, during the focusing process of the optical lens 10, the first lens group 3a can be a fixed lens group, the second lens group 3b can move along the optical axis in the second direction, and the distance between the first lens group 3a and the second lens group 3b can be increased to achieve focusing of the optical lens 10, thereby improving the imaging quality of the optical lens 10.

[0163] In some embodiments, during the focusing process of the optical lens 10, the second lens group 3b can be a fixed lens group, the first lens group 3a can move along the optical axis in the second direction, and the distance between the first lens group 3a and the second lens group 3b can be increased to achieve focusing of the optical lens 10, thereby improving the imaging quality of the optical lens 10.

[0164] In other embodiments, during the focusing process of the optical lens 10, both the first lens group 3a and the second lens group 3b can move along the optical axis in the second direction, and the distance between the first lens group 3a and the second lens group 3b increases. This application does not specifically limit the details.

[0165] As shown in Figures 3 and 4, the second direction can include a first sub-direction and a second sub-direction with opposite directions. The first sub-direction can be the direction from the second lens group 3b to the first lens group 3a, and the second sub-direction can be the direction from the first lens group 3a to the second lens group 3b. In other words, the first sub-direction can be the negative direction of the X-axis, and the second sub-direction can be the positive direction of the X-axis. In other embodiments, the first sub-direction can also be the direction from the first lens group 3a to the second lens group 3b, and the second sub-direction can also be the direction from the second lens group 3b to the first lens group 3a. In other words, the first sub-direction can also be the positive direction of the X-axis, and the second sub-direction can also be the negative direction of the X-axis. It is understood that both the first and second sub-directions can be flexibly set according to actual needs, and this application does not limit them in any specific way.

[0166] As shown in Figures 3 and 4, exemplarily, during the process of focusing the optical lens 10 from infinity to a macro state, the first lens group 3a can be a fixed lens group, while the second lens group 3b can move along a second sub-direction. At this time, the distance between the first lens group 3a and the second lens group 3b increases.

[0167] As shown in Figures 3 and 4, exemplarily, during the process of focusing the optical lens 10 to infinity in macro mode, the first lens group 3a can be a fixed lens group, while the second lens group 3b can move along a first sub-direction. At this time, the distance between the first lens group 3a and the second lens group 3b increases.

[0168] Understandably, since the first lens group 3a can be a fixed lens group and the second lens group 3b can move along the optical axis of the first sub-direction or the second sub-direction, the focusing method of the optical lens 10 is group focusing. In this way, the optical lens 10 can achieve super-telephoto macro imaging through the shorter focusing distance of the second lens group 3b, thereby improving the focusing performance of the optical lens 10 capable of super-telephoto shooting in macro mode, resulting in higher image quality. Simultaneously, because the focusing distance of the optical lens 10 capable of super-telephoto shooting is short, its size is smaller, which is beneficial for achieving a miniaturized design.

[0169] For example, the second deflection element group 4 may include an incident surface 41, an exit surface 42, and a reflecting surface 43. The incident surface 41 of the second deflection element group 4 may be disposed facing the second lens group 3b. The reflecting surface 43 of the second deflection element group 4 may be connected between the incident surface 41 and the exit surface 42 of the second deflection element group 4. After passing through the second lens group 3b, the light enters the interior of the second deflection element group 4 through the incident surface 41, undergoes at least one reflection within the second deflection element group 4, and then exits the second deflection element group 4 through the exit surface 42.

[0170] It is understandable that the light rays converged by the first lens group 3a and the second lens group 3b can undergo at least one reflection within the second reversing element group 4, thereby increasing the total length of the optical path. Through the cooperation between the second reversing element group 4, the reflecting mirror group 1, and the first reversing element group 2, the total length of the optical path can be further increased, which further facilitates the shooting at the ultra-telephoto end of the optical lens 10. Furthermore, since the second reversing element group 4 increases the total length of the optical path through reflection, the overall size of the optical lens 10 can be kept relatively small, which is beneficial for achieving a miniaturized optical lens 10.

[0171] For example, the second deflection element group 4 can be a prism, a mirror, or other components with reflective function. The incident surface 41 and the exit surface 42 of the second deflection element group 4 can be optical surfaces such as planes, spheres, or aspherical surfaces. Specifically, this application does not limit the scope.

[0172] For example, the cross-section of the second bending element group 4 can be approximately triangular. In other embodiments, the cross-section of the second bending element group 4 can also be other shapes, for example, the cross-section of the second bending element group 4 can also be approximately quadrilateral, etc.

[0173] Exemplarily, Figures 2 to 4 and the related figures below schematically illustrate that the second deflection element group 4 includes a deflection prism. In some embodiments, the second deflection element group 4 may also include multiple deflection prisms; in other words, the second deflection element group 4 may also include at least two deflection prisms. Alternatively, the second deflection element group 4 may include a deflection prism and at least one lens. Alternatively, the second deflection element group 4 may be an integrally formed structure of a deflection prism and a lens, with the incident surface 41 of the second deflection element group 4 having a convex surface near the optical axis and the exit surface 42 of the second deflection element group 4 having a concave surface near the optical axis. In other embodiments, the incident surface 41 of the second deflection element group 4 may also have a concave surface near the optical axis, and the exit surface 42 of the second deflection element group 4 may also have a convex surface near the optical axis. Specifically, this application does not limit the scope.

[0174] The structure of the relevant components of the camera module 300 has been described in detail above. The following section will, with reference to the accompanying drawings, describe in detail the settings of the relevant optical parameters of the optical lens 10 of the camera module 300, and illustrate the meaning of the relevant optical parameters in the accompanying drawings.

[0175] For example, the optical lens 10 can satisfy: 0.01 < |EFLg2 / EFLi| < 0.8, where EFLg2 is the focal length of the second lens group 3b, and EFLi is the focal length of the optical lens 10 at a distance. For example, |EFLg2 / EFLi| can be equal to 0.05, 0.1, 0.28, 0.33, 0.4, 0.64, 0.7, or 0.78, etc.

[0176] Understandably, by setting the absolute value of the ratio of the focal length of the second lens group 3b to the focal length of the optical lens 10 at a distance, |EFLg2 / EFLi|, to within the range of 0.01 to 0.8, the optical lens 10 capable of super telephoto shooting can achieve a shorter focusing distance, which is beneficial for reducing the size of the optical lens 10 capable of super telephoto shooting, thereby facilitating the miniaturization of the optical lens 10 capable of super telephoto shooting. At the same time, the sharpness of the optical lens 10 is less likely to decrease rapidly when focusing deviates.

[0177] In one embodiment, the optical lens 10 can satisfy: 0.01 < |EFLg2 / EFLi| < 0.4, for example, |EFLg2 / EFLi| can be equal to 0.05, 0.1, 0.19, 0.2, 0.28, 0.33, or 0.38, etc.

[0178] Understandably, by setting the absolute value of the ratio of the focal length of the second lens group 3b to the focal length of the optical lens 10 at a distance, |EFLg2 / EFLi|, to within the range of 0.01 to 0.4, the optical lens 10 capable of super telephoto shooting can achieve a shorter focusing distance, which is beneficial for reducing the size of the optical lens 10 capable of super telephoto shooting, thereby facilitating the miniaturization of the optical lens 10 capable of super telephoto shooting. At the same time, the sharpness of the optical lens 10 is less likely to decrease rapidly when focusing deviates.

[0179] In other embodiments, the absolute value of the ratio of the focal length of the second lens group 3b to the focal length of the optical lens 10 at a distance, |EFLg2 / EFLi|, may also satisfy other ranges. This application does not specifically limit the application to this.

[0180] For example, the optical lens 10 can satisfy: 0.05 < |EFLg2 / EFLg1| < 2, where EFLg1 is the focal length of the first lens group 3a. For example, |EFLg2 / EFLg1| can be equal to 0.07, 0.1, 0.34, 0.56, 0.78, 0.91, 1, 1.3 or 1.8, etc.

[0181] It is understandable that by setting the absolute value of the ratio of the focal length of the second lens group 3b to the focal length of the first lens group 3a, |EFLg2 / EFLg1|, within the range of 0.05 to 2, the optical lens 10 capable of super telephoto shooting can achieve a shorter focusing stroke, which is beneficial for reducing the size of the optical lens 10 capable of super telephoto shooting, thereby facilitating the miniaturization of the optical lens 10 capable of super telephoto shooting. At the same time, the sharpness of the optical lens 10 is less likely to decrease rapidly when focusing deviates.

[0182] In one embodiment, the optical lens 10 can satisfy: 0.1 < |EFLg2 / EFLg1| < 1, where EFLg1 is the focal length of the first lens group 3a. For example, |EFLg2 / EFLg1| can be equal to 0.12, 0.34, 0.56, 0.7, 0.8, 0.91 or 0.97, etc.

[0183] Understandably, by setting the absolute value of the ratio of the focal length of the second lens group 3b to the focal length of the first lens group 3a, |EFLg2 / EFLg1|, within the range of 0.1 to 1, the optical lens 10 capable of super telephoto shooting can achieve a shorter focusing stroke. This is beneficial for reducing the size of the optical lens 10 capable of super telephoto shooting, thereby facilitating the miniaturization of the optical lens 10 capable of super telephoto shooting. Simultaneously, the sharpness of the optical lens 10 is less likely to decrease rapidly when focusing deviates.

[0184] In other embodiments, the absolute value of the ratio of the focal length of the second lens group 3b to the focal length of the first lens group 3a, |EFLg2 / EFLg1|, may also satisfy other ranges. This application does not specifically limit the range.

[0185] For example, the optical lens 10 can satisfy: 0.1 < FLg2f / EFLg2 < 10, where FLg2f is the focal length of the lens closest to the object side of the second lens group 3b. For example, FLg2f / EFLg2 can be equal to 0.5, 1, 3.8, 5.7, 6, 8, 8.5 or 9.5, etc.

[0186] It is understandable that by setting the ratio of the focal length of the lens closest to the object side of the second lens group 3b to the focal length of the second lens group 3b itself (FLg2f / EFLg2) within the range of 0.1 to 10, the optical lens 10 capable of super telephoto shooting can achieve a shorter focusing stroke. This is beneficial for reducing the size of the optical lens 10 capable of super telephoto shooting, thereby facilitating the miniaturization of the optical lens 10 capable of super telephoto shooting. Simultaneously, it improves image quality at close object distances.

[0187] In one embodiment, the optical lens 10 can satisfy: 0.3 < FLg2f / EFLg2 < 5, for example, FLg2f / EFLg2 can be equal to 0.5, 1, 1.2, 2, 3, 3.8, 4 or 4.5, etc.

[0188] It is understandable that by setting the ratio of the focal length of the lens closest to the object side of the second lens group 3b to the focal length of the second lens group 3b itself (FLg2f / EFLg2) to be within the range of 0.3 to 5, the optical lens 10 capable of super telephoto shooting can achieve a shorter focusing stroke, which is beneficial for reducing the size of the optical lens 10 capable of super telephoto shooting, thereby facilitating the miniaturization of the optical lens 10 capable of super telephoto shooting. At the same time, it improves the image quality at close object distances.

[0189] In other embodiments, the ratio of the focal length of the lens closest to the object side of the second lens group 3b to the focal length of the second lens group 3b, FLg2f / EFLg2, can also satisfy other ranges. This application does not specifically limit the details.

[0190] For example, the optical lens 10 can satisfy: L > 100mm (millimeters), where L is the focusing distance of the optical lens 10. For example, L can be equal to 101mm, 120mm, 158mm, 162mm, 170mm, 183.6mm or 200mm, etc.

[0191] It is understandable that setting the focusing distance of the optical lens 10 to be greater than 100mm facilitates shooting at the ultra-telephoto end of the optical lens 10. Furthermore, compared to optical lenses that achieve focusing by moving the entire lens, the focusing method of the optical lens 10 in this embodiment involves moving the first lens group 3a or the second lens group 3b in groups. At the same focusing distance, the focusing stroke of this embodiment is shorter, which is beneficial for achieving macro imaging at the ultra-telephoto end and resulting in higher image quality.

[0192] In other embodiments, the focusing distance L of the optical lens 10 may also satisfy other ranges. This application does not specifically limit the details.

[0193] For example, the optical lens 10 can satisfy: EFLm < EFLi, where EFLm is the focal length of the optical lens 10 at close object distance.

[0194] It is understandable that by setting the focal length of the optical lens 10 at close object distance to be smaller than the focal length of the optical lens 10 at distant object distance, aberrations at close object distance can be reduced, thereby achieving better imaging quality at close object distance.

[0195] For example, the optical lens 10 can satisfy: 1.5 < Din / DRFo < 8, where Din is the light inlet diameter of the mirror group 1 and DRFo is the light outlet diameter of the mirror group 1. For example, Din / DRFo can be equal to 2, 3.8, 4.3, 5.7, 6, 7 or 7.6, etc.

[0196] It is understandable that by setting the ratio of the light inlet diameter to the light outlet diameter of the mirror group 1, Din / DRFo, to be in the range of 1.5 to 8, the imaging beam can be quickly converged, which is beneficial to achieving a thinner optical lens 10 capable of super telephoto shooting, thereby facilitating the miniaturization of the optical lens 10 capable of super telephoto shooting.

[0197] In other embodiments, the ratio of the light inlet diameter to the light outlet diameter of the mirror group 1, Din / DRFo, can also satisfy other ranges. This application does not specifically limit the range.

[0198] For example, the optical lens 10 can satisfy: 0.15 < Dg2l1 / Din < 0.7, where Dg2l1 is the aperture of the lens closest to the object side of the second lens group 3b. For example, Dg2l1 / Din can be equal to 0.2, 0.3, 0.4, 0.5 or 0.66, etc.

[0199] It is understandable that by setting the ratio of the light-transmitting aperture of the lens closest to the object side of the second lens group 3b to the light-inlet aperture of the mirror group 1, Dg2l1 / Din, within the range of 0.15 to 0.7, off-axis aberrations can be reduced, achieving better imaging results at close range while maintaining high energy transmission through the mirror group 1 and the second lens group 3b.

[0200] In one embodiment, the optical lens 10 can satisfy: 0.15 < Dg2l1 / Din < 0.55, where Dg2l1 is the aperture of the lens closest to the object side of the second lens group 3b. For example, Dg2l1 / Din can be equal to 0.2, 0.3, 0.4, 0.5 or 0.51, etc.

[0201] It is understandable that by setting the ratio of the light-transmitting aperture of the lens closest to the object side of the second lens group 3b to the light-inlet aperture of the mirror group 1, Dg2l1 / Din, within the range of 0.15 to 0.55, off-axis aberrations can be reduced, achieving better imaging results at close range while maintaining high energy transmission through the mirror group 1 and the second lens group 3b.

[0202] In other embodiments, the ratio of the aperture of the lens closest to the object side of the second lens group 3b to the aperture of the reflector group 1, Dg2l1 / Din, can also satisfy other ranges. This application does not specifically limit the range.

[0203] For example, the optical lens 10 can satisfy: ImH > 2mm, where ImH can be equal to 2.3mm, 2.8mm, 5mm, 6mm, 10mm or 15mm, etc.

[0204] It is understandable that by setting the image height ImH of the optical lens 10 to be greater than 2mm, the optical lens 10 can achieve high image quality for super telephoto shooting.

[0205] In other embodiments, the image height 1mH of the optical lens 10 may also meet other ranges. This application does not specifically limit the details.

[0206] For example, the optical lens 10 can satisfy: FOV < 30° (degrees), where FOV is the full field of view of the optical lens 10. For example, FOV can be equal to 3°, 5°, 10.7°, 15°, 16.6°, 20°, 23°, 28° or 29°, etc.

[0207] It is understandable that by setting the field of view (FOV) of the optical lens 10 to be less than 30°, distortion and falsification at the edges of the image can be reduced or avoided. Furthermore, the optical lens 10 has a smaller FOV, a smaller field of view, and a larger optical magnification, which can better meet the requirements of the ultra-telephoto design of the optical lens 10.

[0208] In other implementations, the FOV may also satisfy other ranges. This application does not specifically limit the scope.

[0209] For example, the camera module 300 can satisfy: 5mm < H < 20mm, where H is the relative height of the camera module 300, for example, H can be equal to 6mm, 8mm, 10.1mm, 13mm, 18mm or 19.5mm, etc.

[0210] Understandably, by setting the relative height H of the camera module 300 within the range of 5mm to 20mm, the relative height of the camera module 300 capable of super telephoto shooting is relatively small, and the size of the camera module 300 capable of super telephoto shooting is small. This is conducive to the miniaturization of the camera module 300 capable of super telephoto shooting, and is conducive to the application of the camera module 300 in thinner electronic devices (such as mobile phones).

[0211] In other embodiments, the relative height H of the camera module 300 may also satisfy other ranges. This application does not specifically limit the range.

[0212] For example, the camera module 300 can satisfy: 8mm < LA < 80mm, where LA is the relative length of the camera module 300, for example, LA can be equal to 9.5mm, 16mm, 28mm, 33mm, 45mm, 56mm, 78mm or 79mm, etc.

[0213] Understandably, by setting the relative length LA of the camera module 300 to be in the range of 8mm to 80mm, the relative length of the camera module 300 capable of super telephoto shooting is smaller, and the size of the camera module 300 capable of super telephoto shooting is smaller. This is conducive to the miniaturization of the camera module 300 capable of super telephoto shooting, and is conducive to the application of the camera module 300 in thinner electronic devices (such as mobile phones).

[0214] In other embodiments, the relative length LA of the camera module 300 may also fall within other ranges. This application does not specifically limit the range.

[0215] The following will describe in more detail some specific, but not limiting, examples of embodiments of this application with reference to the accompanying drawings.

[0216] As shown in Figures 3 and 4, the camera module 300 includes a reflector group 1, a first transition element group 2, a first lens group 3a, a second lens group 3b, a second transition element group 4, a filter 30, and an image sensor 20 arranged sequentially from the object side to the image side.

[0217] For example, the mirror assembly 1 may include a reflective lens. In one embodiment, the mirror assembly 1 may include a first reflective lens 11.

[0218] For example, the first reflecting lens 11 may include an object side 11a and an image side 11b disposed opposite to each other. The incident surface 1a of the mirror group 1 may be located on the object side 11a of the first reflecting lens 11, and the exit surface 1b of the mirror group 1 may be located on the image side 11b of the first reflecting lens 11.

[0219] For example, light can enter the interior of the first reflecting lens 11 through the object side 11a, undergo at least two reflections inside the first reflecting lens 11, exit the first reflecting lens through the image side 11b, and enter the first deflection element group 2.

[0220] Understandably, the first reflecting lens 11 can deflect light entering the optical lens 10, allowing the light to undergo at least two reflections within the first reflecting lens 11. On one hand, increasing the total length of the light path facilitates ultra-telephoto shooting with the optical lens 10; on the other hand, increasing the total length of the light path through reflection reduces the physical length and height of the optical lens 10, enabling a compact design and thus reducing its height, ultimately achieving a miniaturized design.

[0221] For example, the object-side surface 11a of the first reflecting lens 11 includes a first sub-region 111 and a second sub-region 112, with the second sub-region 112 located between the first sub-regions 111. The surface of the second sub-region 112 may be provided with a light-shielding material, making it difficult for light to enter the interior of the first reflecting lens 11 from the second sub-region 112. The image-side surface 11b of the first reflecting lens 11 includes a third sub-region 113 and a fourth sub-region 114, with the fourth sub-region 114 located between the third sub-regions 113.

[0222] In other embodiments, the first sub-region 111 and the second sub-region 112 of the object side 11a of the first reflecting lens 11, and the third sub-region 113 and the fourth sub-region 114 of the image side 11b of the first reflecting lens 11 can all be configured in other ways. This application does not impose specific limitations on these configurations.

[0223] For example, the first lens group 3a may include a first lens 31 and a second lens 32. The second lens group 3b may include a third lens 33, a fourth lens 34, and a fifth lens 35.

[0224] In other embodiments, the mirror group 1, the first deflection element group 2, the first lens group 3a, the second lens group 3b, and the second deflection element group 4 can all adopt other structures.

[0225] As shown in Figures 3 and 4, exemplarily, during the process of focusing the optical lens 10 to a macro state at infinity, the first lens group 3a can be a fixed lens group, while the second lens group 3b can move along the second sub-direction (i.e., the positive direction of the X-axis). At this time, the distance between the first lens group 3a and the second lens group 3b increases.

[0226] As shown in Figures 3 and 4, exemplarily, during the process of focusing the optical lens 10 to infinity in macro mode, the first lens group 3a can be a fixed lens group, while the second lens group 3b can move along the first sub-direction (i.e., the negative direction of the X-axis). At this time, the distance between the first lens group 3a and the second lens group 3b increases.

[0227] For example, light enters the second deflection element group 4 through the incident surface 41, undergoes a single reflection on the reflecting surface 43 of the second deflection element group 4, and then exits the second deflection element group 4 through the exit surface 42.

[0228] It is understandable that the light rays converged by the first lens group 3a and the second lens group 3b can undergo a single reflection on the reflective surface 43 of the second reversing element group 4, thereby increasing the total length of the optical path. Through the cooperation between the second reversing element group 4, the reflecting mirror group 1, and the first reversing element group 2, the total length of the optical path can be further increased, which further facilitates the shooting at the ultra-telephoto end of the optical lens 10. In addition, since the second reversing element group 4 increases the total length of the optical path through reflection, the overall size of the optical lens 10 can be kept small, which is beneficial for achieving the miniaturization of the optical lens 10.

[0229] Some design parameters of the camera module 300 in the first embodiment of this application are shown in Table 1 below.

[0230] Table 1. Partial design parameters of each component of the camera module 300 in the first embodiment.

[0231] It is understandable that the parameters in the table are expressed in scientific notation. For example, 1.21E+18 means 1.21 × 10⁻¹⁸. 18It is understandable that the counting method for each parameter in the table below is the same, and will not be repeated hereafter.

[0232] It is understood that in Table 1, OBJ can represent the object-side surface of the optical lens 10; STO can represent the aperture stop (not shown); S1 can represent the first sub-region 111 of the object-side surface 11a of the first reflecting lens 11; S2 can represent the third sub-region 113 of the image-side surface 11b of the first reflecting lens 11; S3 can represent the second sub-region 112 of the image-side surface 11b of the first reflecting lens 11; S4 can represent the fourth sub-region 114 of the image-side surface 11b of the first reflecting lens 11; S5 can represent the incident surface 21 of the first refractive element group 2; S6 can represent the reflecting surface 23 of the first refractive element group 2; S7 can represent the exit surface 22 of the first refractive element group 2; S8 ​​and S9 can represent the object-side surface and image-side surface of the first lens 31, respectively; S10 and S... S11 can represent the object-side surface and image-side surface of the second lens 32, respectively; S12 can represent the plane (not shown) that controls the change in the distance between the first lens group 3a and the second lens group 3b, respectively; S13 and S14 can represent the object-side surface and image-side surface of the third lens 33, respectively; S15 and S16 can represent the object-side surface and image-side surface of the fourth lens 34, respectively; S17 and S18 can represent the object-side surface and image-side surface of the fifth lens 35, respectively; S19 can represent the incident surface 41 of the second transition element group 4; S20 can represent the reflecting surface 43 of the second transition element group 4; S21 can represent the exit surface 42 of the second transition element group 4; S22 and S23 can represent the object-side surface and image-side surface of the filter 30, respectively; S24 can represent the image-side surface of the image sensor 20.

[0233] Additionally, the thickness of OBJ refers to the distance between the object being photographed and the object-side surface of the optical lens 10. The thickness of S1 refers to the distance between the first sub-region 111 of the object-side surface 11a of the first reflecting lens 11 and the third sub-region 113 of the image-side surface 11b of the first reflecting lens 11. The thickness of S2 refers to the distance between the third sub-region 113 of the image-side surface 11b of the first reflecting lens 11 and the second sub-region 112 of the image-side surface 11b of the first reflecting lens 11. The thickness of S3 refers to the distance between the second sub-region 112 of the image-side surface 11b of the first reflecting lens 11 and the fourth sub-region 114 of the image-side surface 11b of the first reflecting lens 11. The thickness of S4 refers to the distance between the fourth sub-region 114 of the image-side surface 11b of the first reflecting lens 11 and the incident surface 21 of the first refractive element group 2. The thickness of S5 refers to the distance between the incident surface 21 of the first refractive element group 2 and the reflecting surface 23 of the first refractive element group 2. The thickness of S6 refers to the distance between the reflecting surface 23 and the exiting surface 22 of the first transition element group 2. The thickness of S7 refers to the distance between the exiting surface 22 and the object-side surface of the first lens 31. The thickness of S8 refers to the distance between the object-side surface and the image-side surface of the first lens 31. The thickness of S9 refers to the distance between the image-side surface of the first lens 31 and the object-side surface of the second lens 32. The thickness of S10 refers to the distance between the object-side surface and the image-side surface of the second lens 32. The thickness of S11 refers to the distance between the image-side surface of the second lens 32 and the plane controlling the spacing change between the first lens group 3a and the second lens group 3b. The thickness of S12 refers to the distance between the plane controlling the spacing change between the first lens group 3a and the second lens group 3b and the object-side surface of the third lens 33. The thickness of S13 refers to the distance between the object-side surface and the image-side surface of the third lens 33. The thickness of S14 refers to the distance between the image-side surface of the third lens 33 and the object-side surface of the fourth lens 34. The thickness of S15 refers to the distance between the object-side surface and the image-side surface of the fourth lens 34. The thickness of S16 refers to the distance between the image-side surface of the fourth lens 34 and the object-side surface of the fifth lens 35. The thickness of S17 refers to the distance between the object-side surface and the image-side surface of the fifth lens 35. The thickness of S18 refers to the distance between the image-side surface of the fifth lens 35 and the incident surface 41 of the second refractive element group 4. The thickness of S19 refers to the distance between the incident surface 41 of the second refractive element group 4 and the reflecting surface 43 of the second refractive element group 4. The thickness of S20 refers to the distance between the reflecting surface 43 of the second refractive element group 4 and the exit surface 42 of the second refractive element group 4. The thickness of S21 refers to the distance between the exit surface 42 of the second refractive element group 4 and the object-side surface of the filter 30. The thickness of S22 refers to the distance between the object-side surface and the image-side surface of the filter 30.The thickness of S23 refers to the distance between the image-side surface of the filter 30 and the image-side surface of the image sensor 20. The thickness of S24 refers to the distance between the image-side surface of the image sensor 20 and the imaging surface of the camera module 300.

[0234] In Table 1, a thickness greater than 0 for S1 means that light is transmitted through the first sub-region 111 of the object side 11a of the first reflecting lens 11 without any refraction of the light path; a thickness less than 0 for S2 means that light is reflected through the third sub-region 113 of the image side 11b of the first reflecting lens 11, resulting in a refraction of the light path. It is understood that the positive and negative meanings of the thicknesses in Table 1 and subsequent tables are the same, and will not be elaborated further below.

[0235] In the macro mode, the distance between the subject and the object side of the optical lens 10 is 1m. After the optical lens 10 focuses from infinity to the macro mode, the thickness of S12 increases by 1mm, and the thickness of S18 decreases by 1mm. In other words, after the optical lens 10 focuses from infinity to the macro mode, the second lens group 3b moves a distance of 1mm away from the first pivot element group 2.

[0236] Among them, the optical lens 10 satisfies: FOV = 8°. It can be understood that by limiting the full field of view (FOV) of the optical lens 10 to 8°, distortion and falsification at the image edges are reduced or avoided. Moreover, the optical lens 10 has a smaller full field of view (FOV), a smaller field of view, and a larger optical magnification, which can better meet the ultra-telephoto design requirements of the optical lens 10.

[0237] In addition, the aspherical coefficients of each element of the camera module 300 in the first embodiment of this application are shown in Table 2 below.

[0238] Table 2 Aspheric coefficients of various components of the camera module 300 in the first embodiment.

[0239] Among them, A4, A6, A8, A 10 A 12 A 14 A 16 And A 18 The coefficients of polynomials not present in the table (such as A1, A2, A3, etc.) are all 0. It is understood that the parameters in the table are expressed in scientific notation. For example, -1.328522889E-07 means -1.328522889 × 10⁻⁶. -7 It is understandable that the counting method for each parameter in the table below is the same, and will not be repeated hereafter.

[0240] It is understandable that, among the 14 aspherical surfaces of the camera module 300 shown in Tables 1 and 2, all even-order and odd-order aspherical surface shapes z can be constrained using, but are not limited to, the following aspherical formulas:

[0241] Where z(x,y) is the optical surface sagitta; k is the conic coefficient; c is the radius of curvature; r is the radius of height along the optical axis; r 2 =x 2 +y 2 A i These are the polynomial coefficients; r i These are standardized radial coordinates. By substituting the design parameters of the first reflecting lens 11, the first lens 31, the second lens 32, the third lens 33, the fourth lens 34, and the fifth lens 35 of the optical lens 10 into the above aspherical formula, the object-side and image-side surface shapes of the first reflecting lens 11, the first lens 31, the second lens 32, the third lens 33, the fourth lens 34, and the fifth lens 35 of the camera module 300 in the first embodiment of this application can be obtained.

[0242] Based on the data in Tables 1 and 2, some parameters of the camera module 300 in the first embodiment of this application can be obtained as shown in Table 3 below.

[0243] Table 3. Partial parameters of the camera module 300 in the first embodiment.

[0244] Among them, the focal length EFLg2 of the second lens group 3b and the focal length EFLi of the optical lens 10 at a distance satisfy: |EFLg2 / EFLi|=0.14.

[0245] Understandably, by setting the absolute value of the ratio of the focal length EFLg2 of the second lens group 3b to the focal length EFLi of the optical lens 10 at a distance to 0.14, the optical lens 10 capable of super telephoto shooting can achieve a shorter focusing distance, which helps to reduce the size of the optical lens 10 capable of super telephoto shooting, thereby facilitating the miniaturization of the optical lens 10 capable of super telephoto shooting. At the same time, the sharpness of the optical lens 10 is less likely to decrease rapidly when focusing deviates.

[0246] The focal length EFLg2 of the second lens group 3b and the focal length EFLg1 of the first lens group 3a satisfy: |EFLg2 / EFLg1|=0.25.

[0247] Understandably, by setting the absolute value of the ratio of the focal length EFLg2 of the second lens group 3b to the focal length EFLg1 of the first lens group 3a to be equal to 0.25, the optical lens 10 capable of super telephoto shooting can achieve a shorter focusing distance, which is beneficial for reducing the size of the optical lens 10 capable of super telephoto shooting, thereby facilitating the miniaturization of the optical lens 10 capable of super telephoto shooting. At the same time, the sharpness of the optical lens 10 is less likely to decrease rapidly when focusing deviates.

[0248] Among them, the focal length FLg2f of the lens closest to the object side of the second lens group 3b satisfies the following with the focal length EFLg2 of the second lens group 3b: FLg2f / EFLg2=1.20.

[0249] It is understandable that by setting the ratio of the focal length FLg2f of the lens closest to the object side of the second lens group 3b to the focal length EFLg2 of the second lens group 3b to be equal to 1.20, the optical lens 10 capable of super telephoto shooting can achieve a shorter focusing distance, which is beneficial to reducing the size of the optical lens 10 capable of super telephoto shooting, thereby facilitating the miniaturization of the optical lens 10 capable of super telephoto shooting. At the same time, it improves the image quality at close object distances.

[0250] Among them, the focal length EFLm of the optical lens 10 at close object distance and the focal length EFLi of the optical lens 10 at distant object distance satisfy: EFLm < EFLi.

[0251] It is understandable that by setting the focal length EFLm of the optical lens 10 at close object distance to be less than the focal length EFLi of the optical lens 10 at distant object distance, aberrations at close object distance can be reduced, thereby achieving better imaging quality at close object distance.

[0252] Among them, the light inlet diameter Din of the reflector group 1 and the light outlet diameter DRFo of the reflector group 1 satisfy: Din / DRFo=2.86.

[0253] It is understandable that by setting the ratio of the light inlet diameter Din of the mirror group 1 to the light outlet diameter DRFo of the mirror group 1 to 2.86, the imaging beam can be quickly converged, which is beneficial to achieving a thinner optical lens 10 capable of super telephoto shooting, thereby facilitating the miniaturization of the optical lens 10 capable of super telephoto shooting.

[0254] Among them, the light-transmitting aperture Dg2l1 of the lens closest to the object side of the second lens group 3b satisfies the light-inlet aperture Din of the mirror group 1: Dg2l1 / Din=0.31.

[0255] It is understandable that by setting the ratio of the light-transmitting aperture Dg2l1 of the lens closest to the object side of the second lens group 3b to the light-in aperture Din of the mirror group 1 to be equal to 0.31, off-axis aberrations can be reduced, achieving better imaging results at close range while maintaining high energy transmission through the mirror group 1 and the second lens group 3b.

[0256] In this embodiment, the optical lens 10 satisfies the condition: L = 1m. It is understandable that setting the focusing distance of the optical lens 10 to 1m facilitates ultra-telephoto shooting. Furthermore, compared to optical lenses that achieve focusing by moving the entire lens, the focusing method of the optical lens 10 in this embodiment involves moving either the first lens group 3a or the second lens group 3b in groups. At the same focusing distance, the focusing stroke in this embodiment is shorter, which is beneficial for achieving macro imaging at the ultra-telephoto end and resulting in higher image quality.

[0257] The camera module 300 satisfies the following condition: H = 11mm. It can be understood that by setting the relative height H of the camera module 300 to 11mm, the relative height of the camera module 300 capable of ultra-telephoto shooting is relatively small, resulting in a smaller overall size. This facilitates the miniaturization of the camera module 300 and its application in thinner electronic devices (such as mobile phones).

[0258] The camera module 300 satisfies the following condition: LA = 24mm. It can be understood that by setting the relative length LA of the camera module 300 to 24mm, the relative length of the camera module 300 capable of ultra-telephoto shooting is smaller, resulting in a smaller overall size. This facilitates the miniaturization of the camera module 300 capable of ultra-telephoto shooting and makes it easier to apply to thinner electronic devices (such as mobile phones).

[0259] Figure 5 is a simulation effect diagram of the camera module 300 at infinity according to the first embodiment. It is understood that in the coordinate system of Figure 5, the horizontal axis represents the deviation value (focus, mm) along the optical axis, and the vertical axis represents the normalized coordinates at the pupil. The test wavelengths are 470 nm, 510 nm, 555 nm, 610 nm, and 650 nm, which physically represent the deviation of light of the corresponding wavelength emitted in a 0-degree field of view from the ideal image point after passing through the optical lens 10. The curves in Figure 5 can represent the axial chromatic aberration curve of the camera module 300. The axial chromatic aberration curve represents the deviation of the focal point of light of different wavelengths after passing through the lenses of the optical system. It is understood that in this application, when the coordinate system representing the axial chromatic aberration curve of the camera module 300 appears again in subsequent diagrams, the horizontal and vertical axes and annotations with the same meaning will not be repeated.

[0260] As shown in Figure 5, when the camera module 300 is at infinity, the normalized coordinates of the camera module 300 are all small, the axial chromatic aberration (spherical aberration, chromatic aberration, etc.) correction of the camera module 300 is good, and the imaging quality of the camera module 300 is high.

[0261] Figure 6 is a simulation effect diagram of the camera module 300 in macro mode according to the first embodiment.

[0262] As shown in Figure 6, when the camera module 300 is in macro mode, the normalized coordinates of the camera module 300 are all small, the axial chromatic aberration (spherical aberration, chromatic aberration, etc.) correction of the camera module 300 is good, and the imaging quality of the camera module 300 is high.

[0263] Figure 7 is a simulation effect diagram of the camera module 300 at infinity in the first embodiment. It is understood that in the coordinate system of Figure 7, the horizontal axis represents the deviation value along the optical axis (focus, mm), and the vertical axis represents the image height ImH (IMGHT, mm). The curve in Figure 7 can represent the astigmatism field curvature of the camera module 300. The astigmatism field curvature represents the meridional image plane curvature and the sagittal image plane curvature, used to illustrate the deviation of the convergence point of the fine beam from the ideal imaging plane in different fields of view. The solid line represents the meridional beam, and the dashed line represents the sagittal beam; its horizontal axis represents the deviation value along the optical axis, and its vertical axis represents the corresponding field of view. When a certain field of view value is too large, the image quality of that field of view is poor or there are advanced aberrations. It is understood that in this application, when the coordinate system representing the astigmatism field curvature of the camera module 300 appears again in subsequent diagrams, the horizontal and vertical axes and annotations with the same meaning will not be repeated.

[0264] As shown in Figure 7, when the camera module 300 is at infinity, the field curvature in both directions is small, the camera module 300 has a good depth of focus, and the imaging quality of the camera module 300 is high.

[0265] Figure 8 is a simulation effect diagram of the camera module 300 in macro mode according to the first embodiment.

[0266] As shown in Figure 8, when the camera module 300 is in macro mode, the field curvature in both directions is small, the camera module 300 has a good depth of focus, and the imaging quality of the camera module 300 is high.

[0267] Figure 9 is a simulation effect diagram of the camera module 300 at infinity according to the first embodiment. It is understood that in the coordinate system of Figure 9, the horizontal axis represents the optical distortion ratio (%), and the vertical axis represents the image height ImH (IMG HT, mm). The curve in Figure 9 can represent the distortion curve of the camera module 300. It is understood that in this application, when the coordinate system representing the distortion curve of the camera module 300 appears again in subsequent diagrams, the horizontal and vertical axes representing the same meaning, and the annotations in the figures, will not be repeated.

[0268] As shown in Figure 9, when the camera module 300 is at infinity, the optical distortion ratio of the camera module 300 at different image heights is less than 1%, which can ensure that there is no obvious distortion in the image, the degree of optical distortion of the image is small, and the imaging quality of the camera module 300 is high.

[0269] Figure 10 is a simulation effect diagram of the camera module 300 in macro mode according to the first embodiment.

[0270] As shown in Figure 10, when the camera module 300 is in macro mode, the optical distortion ratio of the camera module 300 at different image heights is less than 2%, which can ensure that there is no obvious distortion in the image, the degree of optical distortion of the image is small, and the imaging quality of the camera module 300 is high.

[0271] Second implementation: Please refer to Figures 11 and 12. Figure 11 is a simplified schematic diagram of part of the structure of the camera module 300 shown in Figure 2 in another implementation. Figure 12 is a simplified schematic diagram of part of the structure of the camera module 300 shown in Figure 11 in a macro mode in one implementation.

[0272] As shown in Figures 11 and 12, the camera module 300 includes a reflector group 1, a first transition element group 2, a first lens group 3a, a second lens group 3b, a second transition element group 4, a filter 30, and an image sensor 20 arranged sequentially from the object side to the image side.

[0273] For example, the mirror assembly 1 may include a reflective lens. In one embodiment, the mirror assembly 1 may include a first reflective lens 11.

[0274] For example, the first lens group 3a may include a first lens 31, a second lens 32, and a third lens 33. The second lens group 3b may include a fourth lens 34, a fifth lens 35, and a sixth lens 36.

[0275] In other embodiments, the mirror group 1, the first deflection element group 2, the first lens group 3a, the second lens group 3b, and the second deflection element group 4 can all adopt other structures.

[0276] As shown in Figures 11 and 12, exemplarily, during the process of focusing the optical lens 10 to a macro state at infinity, the second lens group 3b can be a fixed lens group, while the first lens group 3a can move along a first sub-direction (i.e., the negative direction of the X-axis). At this time, the distance between the first lens group 3a and the second lens group 3b increases.

[0277] As shown in Figures 11 and 12, exemplarily, during the process of focusing the optical lens 10 to infinity in macro mode, the second lens group 3b can be a fixed lens group, while the first lens group 3a can move along the second sub-direction (i.e., the positive direction of the X-axis). At this time, the distance between the first lens group 3a and the second lens group 3b increases.

[0278] Understandably, since the second lens group 3b can be a fixed lens group and the first lens group 3a can move along the optical axis of the first sub-direction or the second sub-direction, the focusing method of the optical lens 10 is group focusing. In this way, the optical lens 10 can achieve super-telephoto macro imaging through the relatively short focusing distance of the first lens group 3a, thereby improving the focusing performance of the optical lens 10 capable of super-telephoto shooting in macro mode, resulting in higher image quality. Simultaneously, because the focusing distance of the optical lens 10 capable of super-telephoto shooting is short, its size is smaller, which is beneficial for achieving a miniaturized design.

[0279] Some design parameters of the camera module 300 in the second embodiment of this application are shown in Table 4 below.

[0280] Table 4 shows partial design parameters of each component of the camera module 300 in the second embodiment.

[0281] Understandably, in Table 4, OBJ can represent the object-side surface of the optical lens 10; STO can represent the aperture stop (not shown); S1 can represent the first sub-region 111 of the object-side surface 11a of the first reflecting lens 11; S2 can represent the third sub-region 113 of the image-side surface 11b of the first reflecting lens 11; S3 can represent the second sub-region 112 of the image-side surface 11b of the first reflecting lens 11; S4 can represent the fourth sub-region 114 of the image-side surface 11b of the first reflecting lens 11; S5 can represent the incident surface 21 of the first refractive element group 2; S6 can represent the reflecting surface 23 of the first refractive element group 2; S7 can represent the exit surface 22 of the first refractive element group 2; S8 ​​and S9 can represent the object-side surface and image-side surface of the first lens 31, respectively; S10 and S11 can represent the second lens 32, respectively. The object-side surface and image-side surface of the third lens 33; S12 and S13 can represent the object-side surface and image-side surface of the third lens 33, respectively; S14 can represent the plane (not shown) that controls the change in the distance between the first lens group 3a and the second lens group 3b; S15 and S16 can represent the object-side surface and image-side surface of the fourth lens 34, respectively; S17 and S18 can represent the object-side surface and image-side surface of the fifth lens 35, respectively; S19 and S20 can represent the object-side surface and image-side surface of the sixth lens 36, respectively; S21 can represent the incident surface 41 of the second transition element group 4; S22 can represent the reflecting surface 43 of the second transition element group 4; S23 can represent the exit surface 42 of the second transition element group 4; S24 and S25 can represent the object-side surface and image-side surface of the filter 30, respectively; S26 can represent the image-side surface of the image sensor 20.

[0282] Additionally, the thickness of OBJ refers to the distance between the object being photographed and the object-side surface of the optical lens 10. The thickness of S1 refers to the distance between the first sub-region 111 of the object-side surface 11a of the first reflecting lens 11 and the third sub-region 113 of the image-side surface 11b of the first reflecting lens 11. The thickness of S2 refers to the distance between the third sub-region 113 of the image-side surface 11b of the first reflecting lens 11 and the second sub-region 112 of the image-side surface 11b of the first reflecting lens 11. The thickness of S3 refers to the distance between the second sub-region 112 of the image-side surface 11b of the first reflecting lens 11 and the fourth sub-region 114 of the image-side surface 11b of the first reflecting lens 11. The thickness of S4 refers to the distance between the fourth sub-region 114 of the image-side surface 11b of the first reflecting lens 11 and the incident surface 21 of the first refractive element group 2. The thickness of S5 refers to the distance between the incident surface 21 of the first refractive element group 2 and the reflecting surface 23 of the first refractive element group 2. The thickness of S6 refers to the distance between the reflecting surface 23 and the exiting surface 22 of the first transition element group 2. The thickness of S7 refers to the distance between the exiting surface 22 and the object-side surface of the first lens 31. The thickness of S8 refers to the distance between the object-side surface and the image-side surface of the first lens 31. The thickness of S9 refers to the distance between the image-side surface of the first lens 31 and the object-side surface of the second lens 32. The thickness of S10 refers to the distance between the object-side surface and the image-side surface of the second lens 32. The thickness of S11 refers to the distance between the image-side surface of the second lens 32 and the object-side surface of the third lens 33. The thickness of S12 refers to the distance between the object-side surface and the image-side surface of the third lens 33. The thickness of S13 refers to the distance between the image-side surface of the third lens 33 and the plane controlling the spacing change between the first lens group 3a and the second lens group 3b. The thickness of S14 refers to the distance between the plane controlling the spacing change between the first lens group 3a and the second lens group 3b and the object-side surface of the fourth lens 34. The thickness of S15 refers to the distance between the object-side surface of the fourth lens 34 and the image-side surface of the fourth lens 34. The thickness of S16 refers to the distance between the image-side surface of the fourth lens 34 and the object-side surface of the fifth lens 35. The thickness of S17 refers to the distance between the object-side surface of the fifth lens 35 and the image-side surface of the fifth lens 35. The thickness of S18 refers to the distance between the image-side surface of the fifth lens 35 and the object-side surface of the sixth lens 36. The thickness of S19 refers to the distance between the object-side surface of the sixth lens 36 and the image-side surface of the sixth lens 36. The thickness of S20 refers to the distance between the image-side surface of the sixth lens 36 and the incident surface 41 of the second refractive element group 4. The thickness of S21 refers to the distance between the incident surface 41 of the second refractive element group 4 and the reflecting surface 43 of the second refractive element group 4. The thickness of S22 refers to the distance between the reflecting surface 43 of the second refractive element group 4 and the exit surface 42 of the second refractive element group 4.The thickness of S23 refers to the distance between the exit surface 42 of the second transition element group 4 and the object-side surface of the filter 30. The thickness of S24 refers to the distance between the object-side surface of the filter 30 and the image-side surface of the filter 30. The thickness of S25 refers to the distance between the image-side surface of the filter 30 and the image-side surface of the image sensor 20. The thickness of S26 refers to the distance between the image-side surface of the image sensor 20 and the imaging surface of the camera module 300.

[0283] In the macro mode, the distance between the subject and the object side of the optical lens 10 is 0.5m. After the optical lens 10 focuses from infinity to macro mode, the thickness of S12 increases by 1.9mm, and the thickness of S20 decreases by 1.9mm. In other words, after the optical lens 10 focuses from infinity to macro mode, the first lens group 3a moves a distance of 1.9mm toward the first pivot element group 2.

[0284] Among them, the optical lens 10 satisfies: FOV = 8°. It can be understood that by limiting the full field of view (FOV) of the optical lens 10 to 8°, distortion and falsification at the image edges are reduced or avoided. Moreover, the optical lens 10 has a smaller full field of view (FOV), a smaller field of view, and a larger optical magnification, which can better meet the ultra-telephoto design requirements of the optical lens 10.

[0285] In addition, the aspherical coefficients of each element of the camera module 300 in the second embodiment of this application are shown in Table 5 below.

[0286] Table 5 shows the aspherical coefficients of various components of the camera module 300 in the second embodiment.

[0287] It is understandable that, among the 16 aspherical surfaces of the camera module 300 shown in Tables 4 and 5, all even-order and odd-order aspherical surface shapes z can be limited using, but are not limited to, the following aspherical formulas:

[0288] Where z(x,y) is the optical surface sagitta; k is the conic coefficient; c is the radius of curvature; r is the radius of height along the optical axis; r 2 =x 2 +y 2 A i These are the polynomial coefficients; r iThese are standardized radial coordinates. By substituting the design parameters of the first reflecting lens 11, the first lens 31, the second lens 32, the third lens 33, the fourth lens 34, and the fifth lens 35 of the optical lens 10 into the above aspherical formula, the object-side and image-side surface shapes of the first reflecting lens 11, the first lens 31, the second lens 32, the third lens 33, the fourth lens 34, and the fifth lens 35 of the camera module 300 in the second embodiment of this application can be obtained.

[0289] Based on the data in Tables 4 and 5, some parameters of the camera module 300 in the second embodiment of this application can be obtained as shown in Table 6 below.

[0290] Table 6. Partial parameters of the camera module 300 in the second embodiment.

[0291] It is understood that the setting range of the relevant optical parameters in this embodiment can be referred to the setting range of the relevant optical parameters in the first embodiment.

[0292] Among them, the focal length EFLg2 of the second lens group 3b and the focal length EFLi of the optical lens 10 at a distance satisfy: |EFLg2 / EFLi|=0.11.

[0293] Understandably, by setting the absolute value of the ratio of the focal length EFLg2 of the second lens group 3b to the focal length EFLi of the optical lens 10 at a distance to 0.11, the optical lens 10 capable of super telephoto shooting can achieve a shorter focusing distance, which helps to reduce the size of the optical lens 10 capable of super telephoto shooting, thereby facilitating the miniaturization of the optical lens 10 capable of super telephoto shooting. At the same time, the sharpness of the optical lens 10 is less likely to decrease rapidly when focusing deviates.

[0294] The focal length EFLg2 of the second lens group 3b and the focal length EFLg1 of the first lens group 3a satisfy: |EFLg2 / EFLg1|=0.63.

[0295] Understandably, by setting the absolute value of the ratio of the focal length EFLg2 of the second lens group 3b to the focal length EFLg1 of the first lens group 3a to be 0.63, the optical lens 10 capable of super telephoto shooting can achieve a shorter focusing distance, which helps to reduce the size of the optical lens 10 capable of super telephoto shooting, thereby facilitating the miniaturization of the optical lens 10 capable of super telephoto shooting. At the same time, the sharpness of the optical lens 10 is less likely to decrease rapidly when focusing deviates.

[0296] Among them, the focal length FLg2f of the lens closest to the object side of the second lens group 3b satisfies the following with the focal length EFLg2 of the second lens group 3b: FLg2f / EFLg2=1.32.

[0297] Understandably, by setting the ratio of the focal length FLg2f of the lens closest to the object side of the second lens group 3b to the focal length EFLg2 of the second lens group 3b to be 1.32, the optical lens 10 capable of super telephoto shooting can achieve a shorter focusing distance, which is beneficial to reducing the size of the optical lens 10 capable of super telephoto shooting, thereby facilitating the miniaturization of the optical lens 10 capable of super telephoto shooting. At the same time, it improves the image quality at close object distances.

[0298] Among them, the focal length EFLm of the optical lens 10 at close object distance and the focal length EFLi of the optical lens 10 at distant object distance satisfy: EFLm < EFLi.

[0299] It is understandable that by setting the focal length EFLm of the optical lens 10 at close object distance to be less than the focal length EFLi of the optical lens 10 at distant object distance, aberrations at close object distance can be reduced, thereby achieving better imaging quality at close object distance.

[0300] Among them, the light inlet diameter Din of the reflector group 1 and the light outlet diameter DRFo of the reflector group 1 satisfy: Din / DRFo=2.62.

[0301] It is understandable that by setting the ratio of the light inlet diameter Din of the mirror group 1 to the light outlet diameter DRFo of the mirror group 1 to 2.62, the imaging beam can be quickly converged, which is beneficial to achieving a thinner optical lens 10 capable of super telephoto shooting, thereby facilitating the miniaturization of the optical lens 10 capable of super telephoto shooting.

[0302] Among them, the light-transmitting aperture Dg2l1 of the lens closest to the object side of the second lens group 3b satisfies the light-inlet aperture Din of the mirror group 1: Dg2l1 / Din=0.34.

[0303] It is understandable that by setting the ratio of the light-transmitting aperture Dg2l1 of the lens closest to the object side of the second lens group 3b to the light-in aperture Din of the mirror group 1 to be equal to 0.31, off-axis aberrations can be reduced, achieving better imaging results at close range while maintaining high energy transmission through the mirror group 1 and the second lens group 3b.

[0304] In this embodiment, the optical lens 10 satisfies the condition: L = 0.5m. It is understandable that setting the focusing distance of the optical lens 10 to 0.5m facilitates shooting at its ultra-telephoto end. Furthermore, compared to optical lenses that achieve focusing by moving the entire lens, the focusing method of the optical lens 10 in this embodiment involves moving either the first lens group 3a or the second lens group 3b in groups. At the same focusing distance, the focusing stroke in this embodiment is shorter, which is beneficial for achieving macro imaging at the ultra-telephoto end and results in higher image quality.

[0305] The camera module 300 satisfies the following condition: H = 11.5mm. It can be understood that by setting the relative height H of the camera module 300 to 11.5mm, the relative height of the camera module 300 capable of ultra-telephoto shooting is relatively small, resulting in a smaller overall size. This facilitates the miniaturization of the camera module 300 and its application in thinner electronic devices (such as mobile phones).

[0306] The camera module 300 satisfies the following condition: LA = 26mm. It can be understood that by setting the relative length LA of the camera module 300 to 26mm, the relative length of the camera module 300 capable of ultra-telephoto shooting is smaller, resulting in a smaller overall size. This facilitates the miniaturization of the camera module 300 capable of ultra-telephoto shooting and its application in thinner electronic devices (such as mobile phones).

[0307] Figure 13 is a simulation effect diagram of the camera module 300 at infinity in the second embodiment.

[0308] As shown in Figure 13, when the camera module 300 is at infinity, the normalized coordinates of the camera module 300 are all small, the axial chromatic aberration (spherical aberration, chromatic aberration, etc.) correction of the camera module 300 is good, and the imaging quality of the camera module 300 is high.

[0309] Figure 14 is a simulation effect diagram of the camera module 300 in macro mode according to the second embodiment.

[0310] As shown in Figure 14, when the camera module 300 is in macro mode, the normalized coordinates of the camera module 300 are all small, the axial chromatic aberration (spherical aberration, chromatic aberration, etc.) correction of the camera module 300 is good, and the imaging quality of the camera module 300 is high.

[0311] Figure 15 is a simulation effect diagram of the camera module 300 at infinity in the second embodiment.

[0312] As shown in Figure 15, when the camera module 300 is at infinity, the field curvature in both directions is small, the camera module 300 has a good depth of focus, and the imaging quality of the camera module 300 is high.

[0313] Figure 16 is a simulation effect diagram of the camera module 300 in macro mode according to the second embodiment.

[0314] As shown in Figure 16, when the camera module 300 is in macro mode, the field curvature in both directions is small, the camera module 300 has a good depth of focus, and the imaging quality of the camera module 300 is high.

[0315] Figure 17 is a simulation effect diagram of the camera module 300 at infinity in the second embodiment.

[0316] As shown in Figure 17, when the camera module 300 is at infinity, the optical distortion ratio of the camera module 300 at different image heights is less than 1%, which can ensure that there is no obvious distortion in the image, the degree of optical distortion of the image is small, and the imaging quality of the camera module 300 is high.

[0317] Figure 18 is a simulation effect diagram of the camera module 300 in macro mode according to the second embodiment.

[0318] As shown in Figure 18, when the camera module 300 is in macro mode, the optical distortion ratio of the camera module 300 at different image heights is less than 0.5%, which can ensure that there is no obvious distortion in the image, the degree of optical distortion of the image is small, and the imaging quality of the camera module 300 is high.

[0319] Third implementation: Please refer to Figures 19 and 20. Figure 19 is a simplified schematic diagram of part of the structure of the camera module 300 shown in Figure 2 in another implementation. Figure 20 is a simplified schematic diagram of part of the structure of the camera module 300 shown in Figure 19 in macro mode.

[0320] For example, the camera module 300 includes a reflector group 1, a first transition element group 2, a first lens group 3a, a second lens group 3b, a second transition element group 4, a filter 30, and an image sensor 20 arranged sequentially from the object side to the image side.

[0321] For example, the mirror assembly 1 may include two reflecting lenses. In one embodiment, the mirror assembly 1 may include a first reflecting lens 11 and a second reflecting lens 12. The second reflecting lens 12 may be located on the image side of the first reflecting lens 11.

[0322] For example, the second reflecting lens 12 includes an object-side surface 12a and an image-side surface 12b facing away from each other. The image-side surface 11b of the first reflecting lens 11 can be disposed facing the object-side surface 12a of the second reflecting lens 12, and the image-side surface 12b of the second reflecting lens 12 can be disposed facing the first bending element group 2. The exit surface 1b of the mirror group 1 can be located on the image-side surface 12b of the second reflecting lens 12.

[0323] For example, light can enter the interior of the first reflecting lens 11 and the second reflecting lens 12 from the object side 11a of the first reflecting lens 11. After at least two reflections occur inside the first reflecting lens 11 and the second reflecting lens 12, light exits the first reflecting lens from the image side 11b of the first reflecting lens 11 and enters the first turning element group 2.

[0324] It is understandable that the first reflecting lens 11 and the second reflecting lens 12 can deflect the light entering the optical lens 10, and the light can undergo at least two reflections inside the first reflecting lens 11 and the second reflecting lens 12. On the one hand, the total length of the light path is increased, which is beneficial for realizing ultra-telephoto shooting of the optical lens 10; on the other hand, increasing the total length of the light path through reflection can reduce the physical length and height of the optical lens 10, which is beneficial for achieving a compact setting of the optical lens 10, thereby reducing the height of the optical lens 10 and thus achieving a miniaturized setting of the optical lens 10.

[0325] For example, the object-side surface 12a of the second reflecting lens 12 includes a fifth sub-region 121 and a sixth sub-region 122, with the sixth sub-region 122 located between the fifth sub-regions 121. The image-side surface 12b of the second reflecting lens 12 includes a seventh sub-region 123 and an eighth sub-region 124, with the eighth sub-region 124 located between the seventh sub-regions 123. In other embodiments, the fifth sub-regions 121 and 122 of the object-side surface 12a of the second reflecting lens 12, and the seventh sub-regions 123 and 124 of the image-side surface 12b of the second reflecting lens 12, can all be configured in other ways.

[0326] For example, the first lens group 3a may include a first lens 31 and a second lens 32. The second lens group 3b may include a third lens 33 and a fourth lens 34. In other embodiments, the mirror group 1, the first deflection element group 2, the first lens group 3a, the second lens group 3b, and the second deflection element group 4 may all adopt other structures.

[0327] As shown in Figures 19 and 20, exemplarily, during the process of focusing the optical lens 10 to a macro state at infinity, the first lens group 3a can be a fixed lens group, while the second lens group 3b can move along the second sub-direction (i.e., the positive direction of the X-axis). At this time, the distance between the first lens group 3a and the second lens group 3b increases.

[0328] As shown in Figures 19 and 20, exemplarily, during the process of focusing the optical lens 10 to infinity in macro mode, the first lens group 3a can be a fixed lens group, while the second lens group 3b can move along the first sub-direction (i.e., the negative direction of the X-axis). At this time, the distance between the first lens group 3a and the second lens group 3b increases.

[0329] Understandably, since the first lens group 3a can be a fixed lens group and the second lens group 3b can move along the optical axis of the first sub-direction or the second sub-direction, the focusing method of the optical lens 10 is group focusing. In this way, the optical lens 10 can achieve super-telephoto macro imaging through the shorter focusing distance of the second lens group 3b, thereby improving the focusing performance of the optical lens 10 capable of super-telephoto shooting in macro mode, resulting in higher image quality. Simultaneously, because the focusing distance of the optical lens 10 capable of super-telephoto shooting is short, its size is smaller, which is beneficial for achieving a miniaturized design.

[0330] For example, light enters the second deflection element group 4 through the incident surface 41, and is reflected twice in sequence on the exit surface 42 and the reflecting surface 43 of the second deflection element group 4, before exiting the second deflection element group 4 through the exit surface 42.

[0331] It is understandable that the light rays converged by the first lens group 3a and the second lens group 3b can undergo two reflections in sequence at the exit surface 42 and the reflecting surface 43 of the second reversing element group 4, thereby increasing the total length of the optical path. Through the cooperation between the second reversing element group 4, the reflecting mirror group 1, and the first reversing element group 2, the total length of the optical path can be further increased, which further facilitates the shooting at the ultra-telephoto end of the optical lens 10. In addition, since the second reversing element group 4 increases the total length of the optical path through reflection, the overall size of the optical lens 10 can be kept small, which is beneficial for the miniaturization of the optical lens 10.

[0332] Some design parameters of the camera module 300 in the third embodiment of this application are shown in Table 7 below.

[0333] Table 7 shows partial design parameters of each component of the camera module 300 in the third embodiment.

[0334] It is understood that in Table 7, OBJ can represent the object-side surface of the optical lens 10; STO can represent the aperture stop (not shown in the attached figures); S1 can represent the first sub-region 111 of the object-side surface 11a of the first reflecting lens 11; S2 can represent the third sub-region 113 of the image-side surface 11b of the first reflecting lens 11; S3 can represent the fifth sub-region 121 of the object-side surface 12a of the second reflecting lens 12; S4 can represent the seventh sub-region 123 of the image-side surface 12b of the second reflecting lens 12; S5 can represent... S6 can represent the fifth sub-region 121 of the object side 12a of the second reflecting lens 12; S7 can represent the third sub-region 113 of the image side 11b of the first reflecting lens 11; S8 can represent the second sub-region 112 of the image side 11b of the first reflecting lens 11; S9 can represent the sixth sub-region 122 of the object side 12a of the second reflecting lens 12; S10 can represent the eighth sub-region 121 of the image side 12b of the second reflecting lens 12. 4; S11 can represent the incident surface 21 of the first deflecting element group 2; S12 can represent the reflecting surface 23 of the first deflecting element group 2; S13 can represent the exiting surface 22 of the first deflecting element group 2; S14 and S15 can represent the object-side surface and image-side surface of the first lens 31, respectively; S16 and S17 can represent the object-side surface and image-side surface of the second lens 32, respectively; S18 can represent the plane that controls the change in the distance between the first lens group 3a and the second lens group 3b; S19 and S20 can represent the third The object-side surface and image-side surface of lens 33; S21 and S22 can represent the object-side surface and image-side surface of fourth lens 34, respectively; S23 can represent the incident surface 41 of second transition element group 4; S24 can represent the exit surface 42 of second transition element group 4; S25 can represent the reflecting surface 43 of second transition element group 4; S26 can represent the exit surface 42 of second transition element group 4; S27 and S28 can represent the object-side surface and image-side surface of filter 30, respectively; S29 can represent the image-side surface of image sensor 20.

[0335] Additionally, the thickness of OBJ refers to the distance between the object being photographed and the object-side surface of the optical lens 10. The thickness of S1 refers to the distance between the first sub-region 111 of the object-side surface 11a of the first reflecting lens 11 and the third sub-region 113 of the image-side surface 11b of the first reflecting lens 11. The thickness of S2 refers to the distance between the third sub-region 113 of the image-side surface 11b of the first reflecting lens 11 and the fifth sub-region 121 of the object-side surface 12a of the second reflecting lens 12. The thickness of S3 refers to the distance between the fifth sub-region 121 of the object-side surface 12a of the second reflecting lens 12 and the seventh sub-region 123 of the image-side surface 12b of the second reflecting lens 12. The thickness of S4 refers to the distance between the seventh sub-region 123 of the image-side surface 12b of the second reflecting lens 12 and the fifth sub-region 121 of the object-side surface 12a of the second reflecting lens 12. The thickness of S5 refers to the distance between the fifth sub-region 121 of the object-side surface 12a of the second reflecting lens 12 and the fourth sub-region 114 of the image-side surface 11b of the first reflecting lens 11. The thickness of S6 refers to the distance between the fourth sub-region 114 of the image-side surface 11b of the first reflecting lens 11 and the second sub-region 112 of the image-side surface 11b of the first reflecting lens 11. The thickness of S7 refers to the distance between the second sub-region 112 of the image-side surface 11b of the first reflecting lens 11 and the fourth sub-region 114 of the image-side surface 11b of the first reflecting lens 11. The thickness of S8 refers to the distance between the fourth sub-region 114 of the image-side surface 11b of the first reflecting lens 11 and the sixth sub-region 122 of the object-side surface 12a of the second reflecting lens 12. The thickness of S9 refers to the distance between the sixth sub-region 122 of the object-side surface 12a of the second reflecting lens 12 and the eighth sub-region 124 of the image-side surface 12b of the second reflecting lens 12. The thickness of S10 refers to the distance between the eighth sub-region 124 of the image-side surface 12b of the second reflecting lens 12 and the incident surface 21 of the first deflection element group 2. The thickness of S11 refers to the distance between the incident surface 21 and the reflecting surface 23 of the first deflecting element group 2. The thickness of S12 refers to the distance between the reflecting surface 23 and the exiting surface 22 of the first deflecting element group 2. The thickness of S13 refers to the distance between the exiting surface 22 and the object-side surface of the first lens 31. The thickness of S14 refers to the distance between the object-side surface and the image-side surface of the first lens 31. The thickness of S15 refers to the distance between the image-side surface of the first lens 31 and the object-side surface of the second lens 32. The thickness of S16 refers to the distance between the object-side surface and the image-side surface of the second lens 32. The thickness of S17 refers to the distance between the image-side surface of the second lens 32 and the plane controlling the spacing change between the first lens group 3a and the second lens group 3b. The thickness of S18 refers to the distance between the plane controlling the spacing change between the first lens group 3a and the second lens group 3b and the object-side surface of the third lens 33.The thickness of S19 refers to the distance between the object-side surface of the third lens 33 and the image-side surface of the third lens 33. The thickness of S20 refers to the distance between the image-side surface of the third lens 33 and the object-side surface of the fourth lens 34. The thickness of S21 refers to the distance between the object-side surface of the fourth lens 34 and the image-side surface of the fourth lens 34. The thickness of S22 refers to the distance between the image-side surface of the fourth lens 34 and the incident surface 41 of the second transition element group 4. The thickness of S23 refers to the distance between the incident surface 41 of the second transition element group 4 and the exit surface 42 of the second transition element group 4. The thickness of S24 refers to the distance between the exit surface 42 of the second transition element group 4 and the reflecting surface 43 of the second transition element group 4. The thickness of S25 refers to the distance between the reflecting surface 43 of the second transition element group 4 and the exit surface 42 of the second transition element group 4. The thickness of S26 refers to the distance between the exit surface 42 of the second transition element group 4 and the object-side surface of the filter 30. The thickness of S27 refers to the distance between the object-side surface of the filter 30 and the image-side surface of the filter 30. The thickness of S28 refers to the distance between the image-side surface of the filter 30 and the image-side surface of the image sensor 20. The thickness of S29 refers to the distance between the image-side surface of the image sensor 20 and the imaging surface of the camera module 300.

[0336] In the macro mode, the distance between the subject and the object side of the optical lens 10 is 10m. After the optical lens 10 focuses from infinity to macro mode, the thickness of S18 increases by 0.35mm, and the thickness of S22 decreases by 0.35mm. In other words, after the optical lens 10 focuses from infinity to macro mode, the second lens group 3b moves a distance of 0.35mm away from the first pivot element group 2.

[0337] Among them, the optical lens 10 satisfies: FOV = 10.8°. It can be understood that by limiting the full field of view (FOV) of the optical lens 10 to 10.8°, distortion and falsification at the image edges are reduced or avoided. Moreover, the optical lens 10 has a smaller full field of view (FOV), a smaller field of view, and a larger optical magnification, which can better meet the ultra-telephoto design requirements of the optical lens 10.

[0338] Furthermore, the aspherical coefficients of each element of the camera module 300 in the third embodiment of this application are shown in Table 8 below.

[0339] Table 8 shows the aspherical coefficients of each component of the camera module 300 in the third embodiment.

[0340] It is understandable that, among the 18 aspherical surfaces of the camera module 300 shown in Tables 7 and 8, all even-order and odd-order aspherical surface shapes z can be constrained using, but are not limited to, the following aspherical formulas:

[0341] Where z(x,y) is the optical surface sagitta; k is the conic coefficient; c is the radius of curvature; r is the radius of height along the optical axis; r 2 =x 2 +y 2 A i These are the polynomial coefficients; r i These are standardized radial coordinates. By substituting the design parameters of the first reflecting lens 11, the second reflecting lens, the first lens 31, the second lens 32, the third lens 33, and the fourth lens 34 of the optical lens 10 into the above aspherical formula, the object-side and image-side surface shapes of the first reflecting lens 11, the second reflecting lens, the first lens 31, the second lens 32, the third lens 33, and the fourth lens 34 of the camera module 300 in the third embodiment of this application can be obtained.

[0342] Based on the data in Tables 7 and 8, some parameters of the camera module 300 in the third embodiment of this application can be obtained as shown in Table 9 below.

[0343] Table 9. Partial parameters of the camera module 300 in the third embodiment.

[0344] It is understood that the setting range of the relevant optical parameters in this embodiment can be referred to the setting range of the relevant optical parameters in the first embodiment.

[0345] Among them, the focal length EFLg2 of the second lens group 3b and the focal length EFLi of the optical lens 10 at a distance satisfy: |EFLg2 / EFLi|=0.29.

[0346] Understandably, by setting the absolute value of the ratio of the focal length EFLg2 of the second lens group 3b to the focal length EFLi of the optical lens 10 at a distance to 0.29, the optical lens 10 capable of super telephoto shooting can achieve a shorter focusing distance, which helps to reduce the size of the optical lens 10 capable of super telephoto shooting, thereby facilitating the miniaturization of the optical lens 10 capable of super telephoto shooting. At the same time, the sharpness of the optical lens 10 is less likely to decrease rapidly when focusing deviates.

[0347] The focal length EFLg2 of the second lens group 3b and the focal length EFLg1 of the first lens group 3a satisfy: |EFLg2 / EFLg1|=0.41.

[0348] Understandably, by setting the absolute value of the ratio of the focal length EFLg2 of the second lens group 3b to the focal length EFLg1 of the first lens group 3a to be 0.41, the optical lens 10 capable of super telephoto shooting can achieve a shorter focusing distance, which helps to reduce the size of the optical lens 10 capable of super telephoto shooting, thereby facilitating the miniaturization of the optical lens 10 capable of super telephoto shooting. At the same time, the sharpness of the optical lens 10 is less likely to decrease rapidly when focusing deviates.

[0349] Among them, the focal length FLg2f of the lens closest to the object side of the second lens group 3b satisfies the following with the focal length EFLg2 of the second lens group 3b: FLg2f / EFLg2=0.88.

[0350] Understandably, by setting the ratio of the focal length FLg2f of the lens closest to the object side of the second lens group 3b to the focal length EFLg2 of the second lens group 3b to 0.88, the optical lens 10 capable of super telephoto shooting can achieve a shorter focusing distance, which is beneficial for reducing the size of the optical lens 10 capable of super telephoto shooting, thereby facilitating the miniaturization of the optical lens 10 capable of super telephoto shooting. At the same time, it improves the image quality at close object distances.

[0351] Among them, the focal length EFLm of the optical lens 10 at close object distance and the focal length EFLi of the optical lens 10 at distant object distance satisfy: EFLm < EFLi.

[0352] It is understandable that by setting the focal length EFLm of the optical lens 10 at close object distance to be less than the focal length EFLi of the optical lens 10 at distant object distance, aberrations at close object distance can be reduced, thereby achieving better imaging quality at close object distance.

[0353] Among them, the light inlet diameter Din of the reflector group 1 and the light outlet diameter DRFo of the reflector group 1 satisfy: Din / DRFo=2.94.

[0354] It is understandable that by setting the ratio of the light inlet diameter Din of the mirror group 1 to the light outlet diameter DRFo of the mirror group 1 to 2.94, the imaging beam can be quickly converged, which is beneficial to achieving a thinner optical lens 10 capable of super telephoto shooting, thereby facilitating the miniaturization of the optical lens 10 capable of super telephoto shooting.

[0355] Among them, the light-transmitting aperture Dg2l1 of the lens closest to the object side of the second lens group 3b satisfies the light-inlet aperture Din of the mirror group 1: Dg2l1 / Din=0.36.

[0356] It is understandable that by setting the ratio of the light-transmitting aperture Dg2l1 of the lens closest to the object side of the second lens group 3b to the light-in aperture Din of the mirror group 1 to be equal to 0.36, off-axis aberrations can be reduced, achieving better imaging results at close range while maintaining high energy transmission through the mirror group 1 and the second lens group 3b.

[0357] In this embodiment, the optical lens 10 satisfies the condition: L = 10m. It is understandable that setting the focusing distance of the optical lens 10 to 10m facilitates ultra-telephoto shooting. Furthermore, compared to optical lenses that achieve focusing by moving the entire lens, the focusing method of the optical lens 10 in this embodiment involves moving either the first lens group 3a or the second lens group 3b in groups. At the same focusing distance, the focusing stroke in this embodiment is shorter, which is beneficial for achieving macro imaging at the ultra-telephoto end and resulting in higher image quality.

[0358] The camera module 300 satisfies the following condition: H = 13mm. It can be understood that by setting the relative height H of the camera module 300 to 13mm, the relative height of the camera module 300 capable of ultra-telephoto shooting is relatively small, resulting in a smaller overall size. This facilitates the miniaturization of the camera module 300 and its application in thinner electronic devices (such as mobile phones).

[0359] The camera module 300 satisfies the following condition: LA = 35mm. It can be understood that by setting the relative length LA of the camera module 300 to 35mm, the relative length of the camera module 300 capable of ultra-telephoto shooting is smaller, resulting in a smaller overall size. This facilitates the miniaturization of the camera module 300 capable of ultra-telephoto shooting and its application in thinner electronic devices (such as mobile phones).

[0360] Figure 21 is a simulation image of the camera module 300 at infinity in the third embodiment.

[0361] As shown in Figure 21, when the camera module 300 is at infinity, the normalized coordinates of the camera module 300 are all small, the axial chromatic aberration (spherical aberration, chromatic aberration, etc.) correction of the camera module 300 is good, and the imaging quality of the camera module 300 is high.

[0362] Figure 22 is a simulation effect diagram of the camera module 300 in macro mode according to the third embodiment.

[0363] As shown in Figure 22, when the camera module 300 is in macro mode, the normalized coordinates of the camera module 300 are all small, the axial chromatic aberration (spherical aberration, chromatic aberration, etc.) correction of the camera module 300 is good, and the imaging quality of the camera module 300 is high.

[0364] Figure 23 is a simulation effect diagram of the camera module 300 at infinity in the third embodiment.

[0365] As shown in Figure 23, when the camera module 300 is at infinity, the field curvature in both directions is small, the camera module 300 has a good depth of focus, and the imaging quality of the camera module 300 is high.

[0366] Figure 24 is a simulation effect diagram of the camera module 300 in macro mode according to the third embodiment.

[0367] As shown in Figure 24, when the camera module 300 is in macro mode, the field curvature in both directions is small, the camera module 300 has a good depth of focus, and the imaging quality of the camera module 300 is high.

[0368] Figure 25 is a simulation effect diagram of the camera module 300 at infinity in the third embodiment.

[0369] As shown in Figure 25, when the camera module 300 is at infinity, the optical distortion ratio of the camera module 300 at different image heights is less than 1%, which can ensure that there is no obvious distortion in the image, the degree of optical distortion of the image is small, and the imaging quality of the camera module 300 is high.

[0370] Figure 26 is a simulation effect diagram of the camera module 300 in macro mode according to the third embodiment.

[0371] As shown in Figure 26, when the camera module 300 is in macro mode, the optical distortion ratio of the camera module 300 at different image heights is less than 1%, which can ensure that there is no obvious distortion in the image, the degree of optical distortion of the image is small, and the imaging quality of the camera module 300 is high.

[0372] Fourth implementation: Please refer to Figures 27 and 28. Figure 27 is a simplified schematic diagram of part of the structure of the camera module 300 shown in Figure 2 in another implementation. Figure 28 is a simplified schematic diagram of part of the structure of the camera module 300 shown in Figure 27 in macro mode.

[0373] For example, the camera module 300 includes a reflector group 1, a first transition element group 2, a first lens group 3a, a second lens group 3b, a second transition element group 4, a filter 30, and an image sensor 20 arranged sequentially from the object side to the image side.

[0374] For example, the mirror assembly 1 may include two reflective lenses. In one embodiment, the mirror assembly 1 may include a first reflective lens 11 and a second reflective lens 12.

[0375] For example, the first lens group 3a may include a first lens 31, a second lens 32, and a third lens 33. The second lens group 3b may include a fourth lens 34 and a fifth lens 35.

[0376] In other embodiments, the mirror group 1, the first deflection element group 2, the first lens group 3a, the second lens group 3b, and the second deflection element group 4 can all adopt other structures.

[0377] As shown in Figures 27 and 28, exemplarily, during the process of focusing the optical lens 10 to a macro state at infinity, the second lens group 3b can be a fixed lens group, while the first lens group 3a can move along a first sub-direction (i.e., the negative direction of the X-axis). At this time, the distance between the first lens group 3a and the second lens group 3b increases.

[0378] As shown in Figures 27 and 28, exemplarily, during the process of focusing the optical lens 10 to infinity in macro mode, the second lens group 3b can be a fixed lens group, while the first lens group 3a can move along the second sub-direction (i.e., the positive direction of the X-axis). At this time, the distance between the first lens group 3a and the second lens group 3b increases.

[0379] Understandably, since the second lens group 3b can be a fixed lens group and the first lens group 3a can move along the optical axis of the first sub-direction or the second sub-direction, the focusing method of the optical lens 10 is group focusing. In this way, the optical lens 10 can achieve super-telephoto macro imaging through the relatively short focusing distance of the first lens group 3a, thereby improving the focusing performance of the optical lens 10 capable of super-telephoto shooting in macro mode, resulting in higher image quality. Simultaneously, because the focusing distance of the optical lens 10 capable of super-telephoto shooting is short, its size is smaller, which is beneficial for achieving a miniaturized design.

[0380] Some design parameters of the camera module 300 in the fourth embodiment of this application are shown in Table 10 below.

[0381] Table 10 shows partial design parameters of each component of the camera module 300 in the fourth embodiment.

[0382] It is understood that in Table 10, OBJ can represent the object-side surface of the optical lens 10; STO can represent the aperture stop (not shown in the attached figures); S1 can represent the first sub-region 111 of the object-side surface 11a of the first reflecting lens 11; S2 can represent the third sub-region 113 of the image-side surface 11b of the first reflecting lens 11; S3 can represent the fifth sub-region 121 of the object-side surface 12a of the second reflecting lens 12; S4 can represent the seventh sub-region 123 of the image-side surface 12b of the second reflecting lens 12; S5 can represent the second reflecting lens... S6 can represent the fifth sub-region 121 of the object side 12a of the mirror 12; S7 can represent the third sub-region 113 of the image side 11b of the first reflecting lens 11; S8 can represent the fourth sub-region 114 of the image side 11b of the first reflecting lens 11; S9 can represent the sixth sub-region 122 of the object side 12a of the second reflecting lens 12; S10 can represent the eighth sub-region 124 of the image side 12b of the second reflecting lens 12; S11 can represent the first transition element. S12 can represent the incident surface 21 of the first lens group 2; S13 can represent the reflecting surface 23 of the first deflecting element group 2; S14 can represent the plane that controls the change in the distance between the first lens group 3a and the second lens group 3b; S15 and S16 can represent the object side and image side of the first lens 31, respectively; S17 and S18 can represent the object side and image side of the second lens 32, respectively; S19 and S20 can represent the object side and image side of the third lens 33, respectively; S21 and S22 can represent the object side and image side of the third lens 33, respectively. S23 and S24 can represent the object-side surface and image-side surface of the fourth lens 34, respectively; S25 can represent the incident surface 41 of the second transition element group 4; S26 can represent the exit surface 42 of the second transition element group 4; S27 can represent the reflecting surface 43 of the second transition element group 4; S28 can represent the exit surface 42 of the second transition element group 4; S29 and S30 can represent the object-side surface and image-side surface of the filter 30, respectively; S31 can represent the image-side surface of the image sensor 20.

[0383] Additionally, the thickness of OBJ refers to the distance between the object being photographed and the object-side surface of the optical lens 10. The thickness of S1 refers to the distance between the first sub-region 111 of the object-side surface 11a of the first reflecting lens 11 and the third sub-region 113 of the image-side surface 11b of the first reflecting lens 11. The thickness of S2 refers to the distance between the third sub-region 113 of the image-side surface 11b of the first reflecting lens 11 and the fifth sub-region 121 of the object-side surface 12a of the second reflecting lens 12. The thickness of S3 refers to the distance between the fifth sub-region 121 of the object-side surface 12a of the second reflecting lens 12 and the seventh sub-region 123 of the image-side surface 12b of the second reflecting lens 12. The thickness of S4 refers to the distance between the seventh sub-region 123 of the image-side surface 12b of the second reflecting lens 12 and the fifth sub-region 121 of the object-side surface 12a of the second reflecting lens 12. The thickness of S5 refers to the distance between the fifth sub-region 121 of the object-side surface 12a of the second reflecting lens 12 and the fourth sub-region 114 of the image-side surface 11b of the first reflecting lens 11. The thickness of S6 refers to the distance between the fourth sub-region 114 of the image-side surface 11b of the first reflecting lens 11 and the second sub-region 112 of the image-side surface 11b of the first reflecting lens 11. The thickness of S7 refers to the distance between the second sub-region 112 of the image-side surface 11b of the first reflecting lens 11 and the fourth sub-region 114 of the image-side surface 11b of the first reflecting lens 11. The thickness of S8 refers to the distance between the fourth sub-region 114 of the image-side surface 11b of the first reflecting lens 11 and the sixth sub-region 122 of the object-side surface 12a of the second reflecting lens 12. The thickness of S9 refers to the distance between the sixth sub-region 122 of the object-side surface 12a of the second reflecting lens 12 and the eighth sub-region 124 of the image-side surface 12b of the second reflecting lens 12. The thickness of S10 refers to the distance between the eighth sub-region 124 of the image-side surface 12b of the second reflecting lens 12 and the incident surface 21 of the first deflection element group 2. The thickness of S11 refers to the distance between the incident surface 21 and the reflecting surface 23 of the first deflecting element group 2. The thickness of S12 refers to the distance between the reflecting surface 23 and the exiting surface 22 of the first deflecting element group 2. The thickness of S13 refers to the distance between the exiting surface 22 of the first deflecting element group 2 and the plane controlling the spacing change between the first lens group 3a and the second lens group 3b. The thickness of S14 refers to the distance between the plane controlling the spacing change between the first lens group 3a and the second lens group 3b and the object-side surface of the first lens 31. The thickness of S15 refers to the distance between the object-side surface and the image-side surface of the first lens 31. The thickness of S16 refers to the distance between the image-side surface of the first lens 31 and the object-side surface of the second lens 32. The thickness of S17 refers to the distance between the object-side surface and the image-side surface of the second lens 32. The thickness of S18 refers to the distance between the image-side surface of the second lens 32 and the object-side surface of the third lens 33.The thickness of S19 refers to the distance between the object-side surface of the third lens 33 and the image-side surface of the third lens 33. The thickness of S20 refers to the distance between the image-side surface of the third lens 33 and the object-side surface of the fourth lens 34. The thickness of S21 refers to the distance between the object-side surface of the fourth lens 34 and the image-side surface of the fourth lens 34. The thickness of S22 refers to the distance between the image-side surface of the fourth lens 34 and the object-side surface of the fifth lens 35. The thickness of S23 refers to the distance between the object-side surface of the fifth lens 35 and the image-side surface of the fifth lens 35. The thickness of S24 refers to the distance between the image-side surface of the fifth lens 35 and the incident surface 41 of the second reversing element group 4. The thickness of S25 refers to the distance between the incident surface 41 of the second reversing element group 4 and the exit surface 42 of the second reversing element group 4. The thickness of S26 refers to the distance between the exit surface 42 of the second reversing element group 4 and the reflecting surface 43 of the second reversing element group 4. The thickness of S27 refers to the distance between the reflecting surface 43 of the second reversing element group 4 and the exit surface 42 of the second reversing element group 4. The thickness of S28 refers to the distance between the exit surface 42 of the second transition element group 4 and the object-side surface of the filter 30. The thickness of S29 refers to the distance between the object-side surface of the filter 30 and the image-side surface of the filter 30. The thickness of S30 refers to the distance between the image-side surface of the filter 30 and the image-side surface of the image sensor 20. The thickness of S31 refers to the distance between the image-side surface of the image sensor 20 and the imaging surface of the camera module 300.

[0384] In the macro mode, the distance between the subject and the object side of the optical lens 10 is 2m. After the optical lens 10 focuses from infinity to macro mode, the thickness of S20 increases by 1.6mm, and the thickness of S14 decreases by 1.6mm. In other words, after the optical lens 10 focuses from infinity to macro mode, the first lens group 3a moves a distance of 1.6mm toward the first pivot element group 2.

[0385] Among them, the optical lens 10 satisfies: FOV = 10.8°. It can be understood that by limiting the full field of view (FOV) of the optical lens 10 to 10.8°, distortion and falsification at the image edges are reduced or avoided. Moreover, the optical lens 10 has a smaller full field of view (FOV), a smaller field of view, and a larger optical magnification, which can better meet the ultra-telephoto design requirements of the optical lens 10.

[0386] In addition, the aspherical coefficients of each element of the camera module 300 in the fourth embodiment of this application are shown in Table 11 below.

[0387] Table 11 Aspheric coefficients of various components of the camera module 300 in the fourth embodiment.

[0388] It is understandable that, among the 20 aspherical surfaces of the camera module 300 shown in Tables 10 and 11, all even-order and odd-order aspherical surface shapes z can be constrained using, but are not limited to, the following aspherical formulas:

[0389] Where z(x,y) is the optical surface sagitta; k is the conic coefficient; c is the radius of curvature; r is the radius of height along the optical axis; r 2 =x 2 +y 2 A i These are the polynomial coefficients; r i These are standardized radial coordinates. By substituting the design parameters of the first reflecting lens 11, the second reflecting lens, the first lens 31, the second lens 32, the third lens 33, the fourth lens 34, and the fifth lens 35 of the optical lens 10 into the above aspherical formula, the object-side and image-side surface shapes of the first reflecting lens 11, the second reflecting lens, the first lens 31, the second lens 32, the third lens 33, the fourth lens 34, and the fifth lens 35 of the camera module 300 in the fourth embodiment of this application can be obtained.

[0390] Based on the data in Tables 10 and 11, some parameters of the camera module 300 in the fourth embodiment of this application can be obtained as shown in Table 12 below.

[0391] Table 12 Partial parameters of the camera module 300 in the fourth embodiment.

[0392] It is understood that the setting range of the relevant optical parameters in this embodiment can be referred to the setting range of the relevant optical parameters in the first embodiment.

[0393] Among them, the focal length EFLg2 of the second lens group 3b and the focal length EFLi of the optical lens 10 at a distance satisfy: |EFLg2 / EFLi|=0.21.

[0394] Understandably, by setting the absolute value of the ratio of the focal length EFLg2 of the second lens group 3b to the focal length EFLi of the optical lens 10 at a distance to 0.21, the optical lens 10 capable of super telephoto shooting can achieve a shorter focusing distance, which helps to reduce the size of the optical lens 10 capable of super telephoto shooting, thereby facilitating the miniaturization of the optical lens 10 capable of super telephoto shooting. At the same time, the sharpness of the optical lens 10 is less likely to decrease rapidly when focusing deviates.

[0395] The focal length EFLg2 of the second lens group 3b and the focal length EFLg1 of the first lens group 3a satisfy: |EFLg2 / EFLg1|=0.63.

[0396] Understandably, by setting the absolute value of the ratio of the focal length EFLg2 of the second lens group 3b to the focal length EFLg1 of the first lens group 3a to be 0.63, the optical lens 10 capable of super telephoto shooting can achieve a shorter focusing distance, which helps to reduce the size of the optical lens 10 capable of super telephoto shooting, thereby facilitating the miniaturization of the optical lens 10 capable of super telephoto shooting. At the same time, the sharpness of the optical lens 10 is less likely to decrease rapidly when focusing deviates.

[0397] Among them, the focal length FLg2f of the lens closest to the object side of the second lens group 3b satisfies the following with the focal length EFLg2 of the second lens group 3b: FLg2f / EFLg2=0.87.

[0398] Understandably, by setting the ratio of the focal length FLg2f of the lens closest to the object side of the second lens group 3b to the focal length EFLg2 of the second lens group 3b to 0.87, the optical lens 10 capable of super telephoto shooting can achieve a shorter focusing distance, which is beneficial for reducing the size of the optical lens 10 capable of super telephoto shooting, thereby facilitating the miniaturization of the optical lens 10 capable of super telephoto shooting. At the same time, it improves the image quality at close object distances.

[0399] Among them, the focal length EFLm of the optical lens 10 at close object distance and the focal length EFLi of the optical lens 10 at distant object distance satisfy: EFLm < EFLi.

[0400] It is understandable that by setting the focal length EFLm of the optical lens 10 at close object distance to be less than the focal length EFLi of the optical lens 10 at distant object distance, aberrations at close object distance can be reduced, thereby achieving better imaging quality at close object distance.

[0401] Among them, the light inlet diameter Din of the reflector group 1 and the light outlet diameter DRFo of the reflector group 1 satisfy: Din / DRFo=2.86.

[0402] It is understandable that by setting the ratio of the light inlet diameter Din of the mirror group 1 to the light outlet diameter DRFo of the mirror group 1 to 2.86, the imaging beam can be quickly converged, which is beneficial to achieving a thinner optical lens 10 capable of super telephoto shooting, thereby facilitating the miniaturization of the optical lens 10 capable of super telephoto shooting.

[0403] Among them, the light-transmitting aperture Dg2l1 of the lens closest to the object side of the second lens group 3b satisfies the light-inlet aperture Din of the mirror group 1: Dg2l1 / Din=0.44.

[0404] It is understandable that by setting the ratio of the light-transmitting aperture Dg2l1 of the lens closest to the object side of the second lens group 3b to the light-in aperture Din of the mirror group 1 to be equal to 0.44, off-axis aberrations can be reduced, achieving better imaging results at close range while maintaining high energy transmission through the mirror group 1 and the second lens group 3b.

[0405] In this embodiment, the optical lens 10 satisfies the condition: L = 2m. It is understandable that setting the focusing distance of the optical lens 10 to 2m facilitates ultra-telephoto shooting. Furthermore, compared to optical lenses that achieve focusing by moving the entire lens, the focusing method of the optical lens 10 in this embodiment involves moving either the first lens group 3a or the second lens group 3b in groups. At the same focusing distance, the focusing stroke of this embodiment is shorter, which is beneficial for achieving macro imaging at the ultra-telephoto end and resulting in higher image quality.

[0406] The camera module 300 has a height H of 13.2mm. This means that by setting the relative height H of the camera module 300 to 13.2mm, the camera module 300 capable of super-telephoto shooting has a smaller relative height and a smaller overall size. This facilitates the miniaturization of the camera module 300 and its application in thinner electronic devices (such as mobile phones).

[0407] The camera module 300 satisfies the following condition: LA = 36mm. It can be understood that by setting the relative length LA of the camera module 300 to 36mm, the relative length of the camera module 300 capable of ultra-telephoto shooting is smaller, resulting in a smaller overall size. This facilitates the miniaturization of the camera module 300 capable of ultra-telephoto shooting and its application in thinner electronic devices (such as mobile phones).

[0408] Figure 29 is a simulation image of the camera module 300 at infinity in the fourth embodiment.

[0409] As shown in Figure 29, when the camera module 300 is at infinity, the normalized coordinates of the camera module 300 are all small, the axial chromatic aberration (spherical aberration, chromatic aberration, etc.) correction of the camera module 300 is good, and the imaging quality of the camera module 300 is high.

[0410] Figure 30 is a simulation effect diagram of the camera module 300 in macro mode according to the fourth embodiment.

[0411] As shown in Figure 30, when the camera module 300 is in macro mode, the normalized coordinates of the camera module 300 are all small, the axial chromatic aberration (spherical aberration, chromatic aberration, etc.) correction of the camera module 300 is good, and the imaging quality of the camera module 300 is high.

[0412] Figure 31 is a simulation effect diagram of the camera module 300 at infinity in the fourth embodiment.

[0413] As shown in Figure 31, when the camera module 300 is at infinity, the field curvature in both directions is small, the camera module 300 has a good depth of focus, and the imaging quality of the camera module 300 is high.

[0414] Figure 32 is a simulation effect diagram of the camera module 300 in macro mode according to the fourth embodiment.

[0415] As shown in Figure 32, when the camera module 300 is in macro mode, the field curvature in both directions is small, the camera module 300 has a good depth of focus, and the imaging quality of the camera module 300 is high.

[0416] Figure 33 is a simulation effect diagram of the camera module 300 at infinity in the fourth embodiment.

[0417] As shown in Figure 33, when the camera module 300 is at infinity, the optical distortion ratio of the camera module 300 at different image heights is less than 1%, which can ensure that there is no obvious distortion in the image, the degree of optical distortion of the image is small, and the imaging quality of the camera module 300 is high.

[0418] Figure 34 is a simulation effect diagram of the camera module 300 in macro mode according to the fourth embodiment.

[0419] As shown in Figure 34, when the camera module 300 is in macro mode, the optical distortion ratio of the camera module 300 at different image heights is less than 0.5%, which can ensure that there is no obvious distortion in the image, the degree of optical distortion of the image is small, and the imaging quality of the camera module 300 is high.

[0420] 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.

[0421] It should be noted that all the above-described 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. The above are merely some embodiments and implementation methods of this application, and 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 (10), characterized in that, The system includes a mirror group (1), a first deflection element group (2), a first lens group (3a), and a second lens group (3b) arranged sequentially from the object side to the image side. The first deflection element group (2) is used to change the optical axis in a first direction to a second direction, wherein the first direction is different from the second direction. The mirror assembly (1) includes an incident surface (1a) and an exit surface (1b). The exit surface (1b) of the mirror assembly (1) faces the first deflection element group (2). Light enters the interior of the mirror assembly (1) through the incident surface (1a) and undergoes at least two reflections inside the mirror assembly (1). Then, the light exits the mirror assembly (1) through the exit surface (1b) and enters the first deflection element group (2). The first deflection element group (2) includes an incident surface (21) and an exit surface (22). The incident surface (21) of the first deflection element group (2) faces the mirror group (1). After passing through the mirror group (1), the light enters the interior of the first deflection element group (2) through the incident surface (21) and undergoes at least one reflection within the first deflection element group (2). Then, the light exits the first deflection element group (2) through the exit surface (22) and enters the first lens group (3a). During the focusing process, the first lens group (3a) and / or the second lens group (3b) of the optical lens (10) move along the second direction, and the distance between the first lens group (3a) and the second lens group (3b) increases.

2. The optical lens (10) according to claim 1, characterized in that, During the focusing process, the first lens group (3a) of the optical lens (10) is a fixed lens group, and the second lens group (3b) moves along the second direction; Alternatively, during the focusing process, the first lens group (3a) of the optical lens (10) moves along the second direction, and the second lens group (3b) is a fixed lens group.

3. The optical lens (10) according to claim 2, characterized in that, The second direction includes a first sub-direction and a second sub-direction with opposite directions, wherein the first sub-direction is the direction in which the second lens group (3b) points to the first lens group (3a); During the process of focusing from infinity to macro mode, the first lens group (3a) of the optical lens (10) is a fixed lens group, and the second lens group (3b) moves along the second sub-direction; or, the first lens group (3a) moves along the first sub-direction, and the second lens group (3b) is a fixed lens group.

4. The optical lens (10) according to claim 2 or 3, characterized in that, The second direction includes a first sub-direction and a second sub-direction with opposite directions, wherein the first sub-direction is the direction in which the second lens group (3b) points to the first lens group (3a); During the process of focusing the optical lens (10) to infinity in macro mode, the first lens group (3a) is a fixed lens group and the second lens group (3b) moves along the first sub-direction, or the first lens group (3a) moves along the second sub-direction and the second lens group (3b) is a fixed lens group.

5. The optical lens (10) according to any one of claims 1 to 4, characterized in that, The optical lens (10) satisfies: 0.01 < |EFLg2 / EFLi| < 0.8, where EFLg2 is the focal length of the second lens group (3b) and EFLi is the focal length of the optical lens (10) at a distance.

6. The optical lens (10) according to claim 5, characterized in that, The optical lens (10) satisfies: 0.01 < |EFLg2 / EFLi| < 0.

4.

7. The optical lens (10) according to any one of claims 1 to 6, characterized in that, The optical lens (10) satisfies: 0.05 < |EFLg2 / EFLg1| < 2, where EFLg1 is the focal length of the first lens group (3a).

8. The optical lens (10) according to claim 7, characterized in that, The optical lens (10) satisfies: 0.1 < |EFLg2 / EFLg1| < 1.

9. The optical lens (10) according to any one of claims 1 to 8, characterized in that, The optical lens (10) satisfies: 0.1 < FLg2f / EFLg2 < 10, where FLg2f is the focal length of the lens closest to the object side of the second lens group (3b).

10. The optical lens (10) according to claim 9, characterized in that, The optical lens (10) satisfies: 0.3 < FLg2f / EFLg2 < 5.

11. The optical lens (10) according to any one of claims 1 to 10, characterized in that, The optical lens (10) satisfies: L > 100mm, where L is the focusing distance of the optical lens (10).

12. The optical lens (10) according to any one of claims 1 to 11, characterized in that, The optical lens (10) satisfies: EFLm < EFLi, where EFLm is the focal length of the optical lens (10) at near object distance.

13. The optical lens (10) according to any one of claims 1 to 12, characterized in that, The optical lens (10) satisfies: 1.5 < Din / DRFo < 8, where Din is the light inlet diameter of the mirror group (1) and DRFo is the light outlet diameter of the mirror group (1).

14. The optical lens (10) according to any one of claims 1 to 13, characterized in that, The optical lens (10) satisfies: 0.15 < Dg2l1 / Din < 0.7, where Dg2l1 is the aperture of the lens closest to the object side of the second lens group (3b).

15. The optical lens (10) according to any one of claims 1 to 14, characterized in that, The optical lens (10) satisfies: ImH > 2mm, where ImH is the image height of the optical lens (10).

16. The optical lens (10) according to any one of claims 1 to 15, characterized in that, The optical lens (10) satisfies: FOV < 30°, where FOV is the full field of view of the optical lens (10).

17. The optical lens (10) according to any one of claims 1 to 16, characterized in that, The mirror assembly (1) includes a first reflecting lens (11), which includes an object side (11a) and an image side (11b). The image side (11b) of the first reflecting lens (11) is disposed facing the first turning element group (2). Light enters the interior of the first reflecting lens (11) from the object side (11a) and undergoes at least two reflections inside the first reflecting lens (11). Then, it exits the first reflecting lens (11) from the image side (11b) and enters the first deflection element group (2).

18. The optical lens (10) according to any one of claims 1 to 16, characterized in that, The mirror assembly (1) includes a first reflecting lens (11) and a second reflecting lens (12). The first reflecting lens (11) includes an object-side surface (11a) and an image-side surface (11b). The second reflecting lens (12) includes an object-side surface (12a) and an image-side surface (12b). The image-side surface (11b) of the first reflecting lens (11) is disposed facing the object-side surface (12a) of the second reflecting lens (12). The image-side surface (12b) of the second reflecting lens (12) is disposed facing the first turning element group (2). Light enters the interior of the first reflecting lens (11) and the second reflecting lens (12) from the object side (11a) of the first reflecting lens (11). After at least two reflections occur inside the first reflecting lens (11) and the second reflecting lens (12), light exits the second reflecting lens (12) from the image side (12b) of the second reflecting lens (12) and enters the first deflection element group (2).

19. The optical lens (10) according to any one of claims 1 to 18, characterized in that, The optical lens (10) further includes a second bending element group (4), which is located on the image side of the second lens group (3b); The second deflection element group (4) includes an incident surface (41) and an exit surface (42). The incident surface (41) of the second deflection element group (4) faces the second lens group (3b). After the light passes through the second lens group (3b), it is emitted from the second lens group (3b) and enters the second deflection element group (4). After the light undergoes at least one reflection within the second deflection element group (4), it is emitted from the second deflection element group (4) through the exit surface (42).

20. The optical lens (10) according to claim 19, characterized in that, The second deflection element group (4) also includes a reflective surface (43). The reflective surface (43) of the second deflection element group (4) is connected between the incident surface (41) and the exit surface (42) of the second deflection element group (4). The light enters the second deflection element group (4) through the incident surface (41), undergoes one reflection on the reflective surface (43) of the second deflection element group (4), and exits the second deflection element group (4) through the exit surface (42).

21. The optical lens (10) according to claim 19, characterized in that, The second deflection element group (4) also includes a reflective surface (43). The reflective surface (43) of the second deflection element group (4) is connected between the incident surface (41) and the exit surface (42) of the second deflection element group (4). The light enters the second deflection element group (4) through the incident surface (41) and undergoes two reflections in sequence on the exit surface (42) and the reflective surface (43) of the second deflection element group (4) before exiting the second deflection element group (4) through the exit surface (42).

22. The optical lens (10) according to any one of claims 1 to 21, characterized in that, The first group of transition elements (2) includes one or more transition prisms; or the first group of transition elements (2) includes one transition prism and at least one lens; And / or, the incident surface (21) of the first deflection element group (2) is convex near the optical axis, and the exit surface (22) of the first deflection element group (2) is concave near the optical axis.

23. A camera module (300), characterized in that, It includes an image sensor (20) and an optical lens (10) as claimed in any one of claims 1 to 22, wherein the image sensor (20) is located on the image side of the optical lens (10).

24. The camera module (300) according to claim 23, characterized in that, The camera module (300) satisfies: 5mm < H < 20mm, where H is the relative height of the camera module (300).

25. The camera module (300) according to claim 23 or 24, characterized in that, The camera module (300) satisfies: 8mm < LA < 80mm, where LA is the relative length of the camera module (300).

26. An electronic device (1000), characterized in that, The system includes an image processor (400) and a camera module (300) as described in any one of claims 23 to 25, wherein the image processor (400) is communicatively connected to the camera module (300), and the image processor (400) is used to acquire image data from the camera module (300) and process the image data.

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