A lens assembly, a camera module and an electronic device

Abstract

The application discloses a lens assembly, a camera module and an electronic device. In the lens assembly, a first light path adjusting unit is configured to control first light rays from an object side to propagate in a first direction; a second light path adjusting unit is located on the light exit side of the first light path adjusting unit and is configured to control the first light rays to propagate in a second direction to an image side, the second direction being different from the first direction; a focusing unit is located on the light path of the first light rays to perform optical focusing; an anti-shake unit is located on the light path of the first light rays to perform optical anti-shake. A compensation unit is located on the light path of the first light rays, and the compensation unit is configured to compensate for aberration variation caused by movement of the focusing unit and / or the anti-shake unit. By using the transmission and / or reflection of the first light path adjusting unit and the second light path adjusting unit, the propagation path of the light rays can be changed. In this way, not only can an ultra-long focal length be achieved, but also the volume of the lens assembly can be reduced, and the imaging quality can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical elements, and in particular to a lens assembly, a camera module and an electronic device. BACKGROUND

[0002] With the increasing requirements for the imaging function of electronic devices, in order to improve the competitiveness of electronic devices such as mobile phones and tablet computers, integrating a long-focus lens has become one of the main development trends of electronic devices. The long-focus lens has the characteristics of long focal length and small viewing angle, and is suitable for shooting distant scenes and scenes that are not easy to approach.

[0003] However, the conventional long-focus lens usually has the disadvantages of excessive total length and excessive size, which occupies too much internal space of the electronic device and cannot meet the miniaturization development needs of the electronic device. SUMMARY

[0004] The present application provides a lens assembly, a camera module and an electronic device to solve the problem that the size of the existing long-focus lens is large and cannot meet the miniaturization development needs of the electronic device.

[0005] In a first aspect, the present application provides a lens assembly, comprising: a first optical path adjusting unit, a second optical path adjusting unit, a focusing unit, an anti-shake unit and a compensation unit. The first optical path adjusting unit is configured to control the first light from the object side to propagate along the first direction; the second optical path adjusting unit is located on the light-emitting side of the first optical path adjusting unit; the second optical path adjusting unit is configured to control the first light to propagate along the second direction to the image side, the second direction being different from the first direction; the focusing unit is located on the optical path of the first light, and the focusing unit is configured to move along the direction of the optical axis of the lens assembly to perform optical focusing; the anti-shake unit is located on the optical path of the first light, and the anti-shake unit is configured to move along the direction perpendicular to the optical axis to perform optical anti-shake; the compensation unit is located on the optical path of the first light, and the compensation unit is configured to compensate for the aberration variation caused by the movement of the focusing unit and / or the anti-shake unit.

[0006] The lens assembly provided by the present application utilizes the transmission and / or reflection of the first optical path adjusting unit and the second optical path adjusting unit to change the propagation path of the light. In this way, not only can the super-long focal length be achieved, but also the volume of the lens assembly can be reduced, so that the structure of the lens assembly is compact and the internal space of the electronic device is reduced to meet the development of the thin and light electronic device. At the same time, the lens assembly has the functions of focusing, anti-shake and compensation, and the first light is processed by the focusing unit, the anti-shake unit and the compensation unit to improve the imaging quality.

[0007] In some implementations, the focal length FGA of the focusing unit and the effective focal length F of the lens assembly satisfy: 0.4<|FGA / F|<2.0. In this way, by constraining the effective focal length of the lens assembly, the lens assembly has an ultra-long focal length. And, by the effective focal length of the lens assembly, it is beneficial to reasonably set the focal length of the focusing unit of the lens assembly, reduce the change of each aberration, especially the spherical aberration, of the lens assembly when focusing from an infinite distance object to a close distance object, while ensuring a better balance between the size and imaging quality of the lens assembly.

[0008] In some implementations, the focal length FGO of the anti-shake unit and the effective focal length F of the lens assembly satisfy: 0.5<|FGO / F|<1.6. In this way, by the total effective focal length of the lens assembly, it is beneficial to reasonably set the focal length of the anti-shake unit of the lens assembly, compensate for the image offset caused by the lens tilting a certain angle due to hand shaking or body shaking, while ensuring a better balance between the size and imaging quality of the lens assembly.

[0009] In some implementations, the focal length FGC of the compensation unit and the effective focal length F of the lens assembly satisfy: 0.4<|FGC / F|<5.0.

[0010] In some implementations, the aperture value F# of the lens assembly satisfies: F#≤4. In this way, it is beneficial to increase the entrance pupil diameter of the lens assembly, and improve the imaging quality of the lens assembly in a dark environment.

[0011] In some implementations, the total thickness TGA of the focusing unit and the entrance pupil diameter EPD of the lens assembly satisfy: 0.15<TGA / EPD<0.5. In this way, by controlling the ratio of the total thickness TGA of the focusing unit and the entrance pupil diameter EPD of the long-focus lens assembly, the length of the long-focus lens assembly in the normal direction of the imaging surface, i.e. the horizontal direction when usually used, can be controlled, and the structure size of the long-focus lens assembly can be prevented from being too large; at the same time, a smaller total thickness of the focusing unit can reduce the requirements on the motor stroke and precision. In this way, the requirements on the small size and compact structure of the portable electronic device can be better met.

[0012] In some implementations, the total thickness TGO of the anti-shake unit and the entrance pupil diameter EPD of the lens assembly satisfy: 0.15<TGO / EPD<0.6. In this way, by controlling the ratio of the total thickness TGO of the anti-shake unit and the entrance pupil diameter EPD of the long-focus lens assembly, the length of the long-focus lens assembly in the normal direction of the imaging surface, i.e. the horizontal direction when usually used, can be controlled, and the structure size of the long-focus lens assembly can be prevented from being too large; at the same time, a smaller total thickness of the anti-shake unit can reduce the requirements on the motor stroke and precision. In this way, the requirements on the small size and compact structure of the portable electronic device can be better met.

[0013] In some implementations, the focusing movement stroke DGA of the focusing unit and the effective focal length F of the lens assembly satisfy: 0.55 < DGA / F^2*1000 < 1.05. In this way, the movement stroke of the driving motor is reasonably distributed, and meanwhile, the focusing accuracy of the motor is ensured.

[0014] In some implementations, the anti-shake angle OA of the anti-shake unit and the anti-shake stroke DGO satisfy: 0.8 < |DGO / OA| < 1.5. In this way, the anti-shake angle is ensured to be large enough, and meanwhile, the movement stroke of the driving motor is reduced, so that the volume of the anti-shake unit can be compressed, and meanwhile, the long-focus lens assembly has good optical performance and is small in structure.

[0015] In some implementations, along the first direction, the lens assembly has a length L; the length L and the effective focal length F of the lens assembly satisfy: 0.7 < L / F < 1. In this way, by controlling the ratio of the length of the long-focus lens assembly in the x-axis direction to the effective focal length F, the length of the long-focus lens assembly in the normal direction of the imaging surface, i.e., the horizontal direction in use, can be controlled, and the structure size of the long-focus lens assembly can be prevented from being too large, so as to better meet the requirements of small size and compact structure of the portable electronic device.

[0016] In some implementations, along the second direction, the lens assembly has a width W; the width W and the entrance pupil diameter EPD of the lens assembly satisfy: 1.5 < W / EPD < 3. In this way, by controlling the ratio of the width of the long-focus lens assembly in the vertical y-axis direction to the entrance pupil diameter, the structure size of the long-focus lens assembly can be effectively ensured to be not too large, so that the portable electronic device on which the long-focus lens assembly is installed can meet the requirements of small size and compact structure.

[0017] In some implementations, the zoom unit includes a plurality of lenses, the plurality of lenses of the zoom unit are sequentially distributed along the optical path of the first light; the anti-shake unit includes a plurality of lenses, the plurality of lenses of the anti-shake unit are sequentially distributed along the optical path of the first light; and the compensation unit includes a plurality of lenses, the plurality of lenses of the compensation unit are sequentially distributed along the optical path of the first light. In this way, the focusing unit, the anti-shake unit, and the compensation unit are all implemented by independent lens groups. When the lens assembly needs to be focused, only one group of lenses is used to implement focusing, without using the entire lens to implement focusing, so that the focusing stroke can be reduced, the focusing ability can be improved, and the weight can be reduced. Moreover, a long-stroke driving motor does not need to be additionally configured to drive the movement of the lens, so that the volume of the lens assembly can be reduced. When the lens assembly needs to be anti-shaken, only one group of lenses is used to implement anti-shaking, without driving the rotation of the prism in front of the lens to implement optical anti-shaking, so that the requirement for the driving motor is low, and the weight is fully reduced. When the lens assembly needs to be optically compensated,

[0018] In some implementations, the first optical path adjusting unit includes a first reflecting surface; the first reflecting surface is configured to receive the first light from the object side and reflect the first light to control the first light to propagate in a first direction, the first direction being different from the incident direction of the first light. In this way, the first reflecting surface can be used to adjust the optical path of the first light, change the propagation direction of the first light, and thus reduce the size of the lens assembly along the incident direction.

[0019] In some implementations, the second optical path adjusting unit includes a second reflecting surface and a third reflecting surface, the second reflecting surface facing the first optical path adjusting unit, and the third reflecting surface facing the image side; the second reflecting surface is configured to receive the first light propagating in the first direction and reflect the first light for a first time to control the first light to propagate to the third reflecting surface; and the third reflecting surface is configured to reflect the first light after the first time for a second time to control the first light to propagate to the image side in a second direction. In this way, the second reflecting surface and the third reflecting surface can be used to reflect the first light twice to adjust the optical path of the first light again, change the optical path of the first light from the first direction to the second direction, and thus reduce the size of the lens assembly along the first direction.

[0020] In a second aspect, the present application provides a camera module, including: an optical filter, an image sensor, and a lens assembly as provided in the first aspect; the optical filter is located on the light exit side of the lens assembly, and is configured to receive light emitted by the lens assembly; and the image sensor is located on the light exit side of the optical filter, and is configured to perform photoelectric conversion on the light processed by the optical filter, and thus used for imaging.

[0021] The camera module provided by the embodiments of the present application can reasonably set the optical parameters of the elements in the lens assembly, can not only reduce the driving stroke and precision requirements of the focusing motor and the anti-shake motor, and ensure the lightweight of the focusing unit and the anti-shake unit, but also can realize long-focus characteristics and improve the imaging quality; at the same time, the lens assembly has a small volume, can reduce the volume of the camera module, and thus reduce the internal space occupied by the electronic device, and realize the lightweight development of the electronic device.

[0022] In a third aspect, the present application provides an electronic device, including: a display screen, a middle frame, a back shell, and a camera module as provided in the second aspect; the display screen and the back shell are located on opposite sides of the middle frame; the back shell includes a light transmission hole, the camera module is fixed on the middle frame, and the lens assembly is opposite to the light transmission hole.

[0023] The electronic device provided by the embodiments of the present application includes the camera module, the camera module has a small volume, can reduce the internal space occupied by the electronic device, and realize the lightweight development of the electronic device. Moreover, the camera module has high imaging quality, and can improve the imaging performance of the electronic device. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, for those skilled in the art, other drawings can also be obtained based on these drawings without any creative effort.

[0025] Figure 1 is a structural schematic diagram of an electronic device provided by an embodiment of the present application;

[0026] Figure 2 is a rear view of an electronic device provided by an embodiment of the present application;

[0027] Figure 3 is a perspective view of a lens assembly provided by an embodiment of the present application;

[0028] Figure 4 is a first optical axis schematic diagram of a lens assembly provided by an embodiment of the present application;

[0029] Figure 5 is a second optical axis schematic diagram of a lens assembly provided by an embodiment of the present application;

[0030] Figure 6 is a third optical axis schematic diagram of a lens assembly provided by an embodiment of the present application;

[0031] Figure 7 is an optical path schematic diagram of a lens assembly provided by an embodiment of the present application;

[0032] Figure 8 is a structural schematic diagram of a lens assembly provided by an embodiment one of the present application;

[0033] Figure 9 is a field curvature diagram and distortion diagram of a lens assembly provided by an embodiment one of the present application;

[0034] Figure 10 is a structural schematic diagram of a lens assembly provided by an embodiment two of the present application;

[0035] Figure 11 is a field curvature diagram and distortion diagram of a lens assembly provided by an embodiment two of the present application;

[0036] Figure 12 is a structural schematic diagram of a lens assembly provided by an embodiment three of the present application;

[0037] Figure 13 is a field curvature diagram and distortion diagram of a lens assembly provided by an embodiment three of the present application;

[0038] Figure 14 is a structural schematic diagram of a lens assembly provided by an embodiment four of the present application;

[0039] Figure 15 is a field curvature graph and distortion graph of the lens assembly provided in Embodiment Four of the present application;

[0040] Figure 16 is a structural schematic diagram of the lens assembly provided in Embodiment Five of the present application;

[0041] Figure 17 is a field curvature graph and distortion graph of the lens assembly provided in Embodiment Five of the present application;

[0042] Figure 18 is a structural schematic diagram of the lens assembly provided in Embodiment Six of the present application;

[0043] Figure 19 is a field curvature graph and distortion graph of the lens assembly provided in Embodiment Six of the present application;

[0044] Figure 20 is a structural schematic diagram of the lens assembly provided in Embodiment Seven of the present application;

[0045] Figure 21 is a field curvature graph and distortion graph of the lens assembly provided in Embodiment Seven of the present application;

[0046] Figure 22 is a structural schematic diagram of the lens assembly provided in Embodiment Eight of the present application;

[0047] Figure 23 is a field curvature graph and distortion graph of the lens assembly provided in Embodiment Eight of the present application;

[0048] Figure 24 is a structural schematic diagram of the camera module provided in the present application.

[0049] Illustration:

[0050] 10 - display screen, 20 - middle frame, 30 - back shell, 31 - light transmission hole, 40 - camera assembly, 50 - camera module, 100 - first light path adjusting unit, 101 - first reflecting surface, 102 - first light inlet surface, 103 - first light outlet surface, 200 - second light path adjusting unit, 201 - second reflecting surface, 202 - third reflecting surface, 203 - second light inlet surface, 204 - second light outlet surface, 300 - focusing unit, 301 - first lens, 302 - second lens, 400 - anti-shake unit, 401 - third lens, 402 - fourth lens, 500 - compensation unit, 501 - fifth lens, 502 - sixth lens, 600 - optical filter. DETAILED DESCRIPTION

[0051] With reference to the drawings and the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly described. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0052] In the description of the present application, the terms "first", "second", and the like are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0053] In addition, in the present application, the orientation terms such as "upper", "lower", "left", "right", and the like are defined with respect to the orientation of the components shown in the drawings, and it should be understood that these directional terms are relative concepts, which are used for relative description and clarification, and can be changed accordingly according to the change of the orientation of the components placed in the drawings.

[0054] In the following, the professional terms mentioned in the embodiments of the present application are explained and described, so as to facilitate the understanding of those skilled in the art.

[0055] Field of view (FOV) refers to the maximum field of view that can be captured by a lens. The size of the field of view determines the field of view of the optical instrument.

[0056] Optical axis is the axis passing through the centers of all lenses of the lens.

[0057] Focal point is the point where all light rays converge after passing through a convex lens. The point where all light rays converge is called focal point.

[0058] Focal length, also known as focal length, is a measure of the convergence or divergence of light in an optical lens. It refers to the vertical distance from the optical center of the lens or lens group to the focal plane when an infinite distant object passes through the lens or lens group to form a clear image on the focal plane. From a practical point of view, it can be understood as the distance from the lens center to the focal plane when the object is at infinity. For a fixed focus lens, the position of the optical center is fixed; for a long focus lens, the change of the optical center of the lens leads to the change of the focal length of the lens.

[0059] Effective focal length (EFL) refers to the distance from the lens center to the focal point.

[0060] Object side, the side of the lens assembly that is adjacent to the subject being photographed.

[0061] Image side, the side of the lens assembly that is adjacent to the image of the subject being photographed.

[0062] Aperture diaphragm, a device used to control the amount of light that passes through the lens and into the camera body. It is usually located within the lens.

[0063] F-number, also known as FNO, is the relative value (the reciprocal of the relative aperture) derived from the focal length of the lens and the diameter of the entrance pupil. The smaller the F-number, the more light enters in the same unit of time. The larger the F-number, the smaller the depth of field, and the background content of the photograph will be blurred, similar to the effect of a long focal length lens.

[0064] Entrance pupil diameter (EPD), also known as entrance pupil diameter, is the diameter of the pupil seen from the object space.

[0065] Total track length (TTL), refers to the total length from the surface closest to the object side of the lens to the imaging surface. TTL is a major factor in determining the height of the camera.

[0066] Imaging surface, located on the image side of all lenses in the optical lens, and the light passes through each lens in the optical lens in turn to form an image carrier.

[0067] Abbe number, also known as dispersion coefficient, is the ratio of the difference in refractive index of an optical material at different wavelengths. It represents the degree of dispersion of the material.

[0068] Refractive index, the ratio of the speed of light in air to the speed of light in an optical material. The higher the refractive index of an optical material, the stronger its ability to refract incident light, and the thinner the lens.

[0069] Aberration, an optical lens has the properties of an ideal optical system at the optical axis. A point on the object emits light near the axis that intersects at a point on the image plane (i.e. the optical axis image point). However, the light passing through different apertures of the lens is difficult to perfectly intersect at a point, and there is a certain deviation from the position of the near-axis image point. These differences are collectively referred to as aberration.

[0070] Distortion, also known as distortion, is the degree of distortion of the image formed by an optical lens relative to the object itself. Distortion is caused by the influence of the aperture spherical aberration. The intersection height of the chief ray of different fields passing through the optical lens is not equal to the ideal image height, and the difference between the two is the distortion. Therefore, distortion only changes the imaging position of the off-axis object point on the ideal plane, causing the shape of the image to be distorted, but does not affect the clarity of the image.

[0071] Astigmatism occurs because the object point is not on the optical axis of the lens, causing the emitted beam of light to be tilted at an angle to the optical axis. After refraction by the lens, the convergence points of the meridional and sagittal beams are not at the same point. In other words, the beam cannot be focused at a single point, resulting in an unclear image and thus astigmatism. The meridional and sagittal beams are the names of the beams within two perpendicular planes of a rotationally symmetric optical lens.

[0072] The meridional plane is the plane formed by the principal ray (principal beam) of an object point outside the optical axis and the optical axis.

[0073] 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.

[0074] Field curvature refers to the difference in optical axis between the position of the sharpest image point after rays from the off-center field of view pass through an optical lens assembly and the position of the sharpest image point in the center field of view. When a lens has field curvature, the intersection of the entire beam does not coincide with the ideal image point. Although a sharp image point can be obtained at each specific point, the entire image plane is a curved surface.

[0075] The electronic devices described in this application include, but are not limited to, mobile phones, laptops, tablets, personal digital assistants, or wearable devices. The following description uses a mobile phone as an example.

[0076] Figure 1 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application; Figure 2 This is a rear view of the electronic device provided in the embodiments of this application.

[0077] like Figure 1 and Figure 2 As shown, the electronic device may include a display screen 10, a mid-frame 20, and a rear cover 30. The display screen 10 and the rear cover 30 are located on opposite sides of the mid-frame 20. The display screen 10, the mid-frame 20, and the rear cover 30 are sequentially fastened together to form a complete device cavity. The complete device cavity includes components such as a communication module, a circuit board, a battery, a speaker assembly, and a camera assembly 40, which are not listed here.

[0078] The camera assembly 40 can provide shooting functions for electronic devices. The camera assembly 40 can be used as a front camera or a rear camera.

[0079] The embodiment of the present application takes a rear camera as an example for illustration. The rear shell 30 is provided with a light transmission hole 31. The camera assembly 40 is fixed between the rear shell 30 and the middle frame 20, and the lens of the camera assembly 40 is exposed from the light transmission hole 31 to capture the surrounding scene.

[0080] To facilitate the illustration of the positions of various components in the electronic device, the embodiment of the present application exemplarily establishes a three-dimensional coordinate system based on the electronic device, wherein the x-axis direction is the width direction of the electronic device, the y-axis direction is the length direction of the electronic device, and the z-axis direction is the thickness direction of the electronic device.

[0081] The camera assembly 40 includes a lens, a filter, an image sensor, an image processor, and the like, and the corresponding structures are not shown in the figure. The image sensor is located on the image side of the lens, the filter is located between the lens and the image sensor, and the image processor is located in the whole machine cavity and is coupled to the circuit board.

[0082] The light reflected by the photographed object can generate an optical image through the lens and project onto the image sensor. The image sensor converts the optical image into an electrical signal, and the electrical signal can be transmitted to the image processor for processing, and finally the image of the photographed object is displayed through the display screen 10.

[0083] To improve the imaging function of the electronic device, the lens of the camera assembly 40 is usually integrated with a long-focus lens to meet the user experience. The long-focus lens has a long focal length and a small viewing angle, and the spatial range of the photographed scene is relatively small. At the same distance, a larger image can be taken than a standard lens. Therefore, the long-focus lens is suitable for photographing distant scenes and scenes that are not easy to approach.

[0084] Due to the miniaturization of electronic devices, which is the current trend of technological development, traditional long-focus lenses usually have the disadvantages of excessive length, poor imaging quality, or excessive size. The long-focus lens occupies a large space and cannot meet the requirements of the current trend of technological development. Moreover, due to the limitation of the thickness of the electronic device, the optical properties of the long-focus lens are limited, which limits the imaging effects of the electronic device, such as background blurring and object magnification.

[0085] In addition, when using a traditional long-focus lens to take a macro shot, the entire lens usually needs to be moved for focusing. The movement of the long-focus lens results in a long stroke and insufficient lightweight, which requires an additional long-stroke driving motor to drive the movement of the lens. However, this will further increase the space occupied by the long-focus lens and weaken the focusing ability. At the same time, it is difficult to suppress the changes in various aberrations, such as spherical aberration, when focusing from an infinite distance object to a close distance object, resulting in poor shooting effect.

[0086] The long-focus lens in the prior art usually realizes optical anti-shake by driving rotation of a prism in front of the whole lens, the light weight of the anti-shake unit is insufficient, and the requirement for the motor is higher.

[0087] It can be seen that how to make the long-focus lens consider small size, compact structure, super long focal length and high image quality, while fully guaranteeing the light weight of the focusing assembly and the anti-shake assembly, has become a problem that needs to be solved urgently.

[0088] To solve the above technical problems, the embodiment of the present application provides a lens assembly, which is compact in structure, can reduce the internal space occupied by the electronic device, can realize super long focal length and high imaging quality, and can fully guarantee the light weight of focusing and anti-shake.

[0089] Figure 3 is a perspective view of the lens assembly provided by the embodiment of the present application.

[0090] As shown in Figure 3 , in some embodiments, the lens assembly can include a first light path adjusting unit 100, a second light path adjusting unit 200, a focusing unit 300, an anti-shake unit 400 and a compensation unit 500.

[0091] The first light path adjusting unit 100 and the second light path adjusting unit 200 are both configured to change the propagation light path of light rays; the focusing unit 300 is configured to move along the optical axis direction of the lens assembly to perform optical focusing; the anti-shake unit 400 is configured to move along the direction perpendicular to the optical axis to perform optical anti-shake. The compensation unit 500 is configured to compensate for the aberration variation caused by the movement of the focusing unit 300 and / or the anti-shake unit 400.

[0092] Figure 4 is a first optical axis schematic view of the lens assembly provided by the embodiment of the present application. Among them, Figure 4 is Figure 3 a side view of

[0093] As shown in Figure 4 , in some embodiments, the first light path adjusting unit 100 is close to the object side, and the first light path adjusting unit 100 is configured to control the first light rays from the object side to propagate along the first direction D1.

[0094] The first light path adjusting unit 100 can deflect the light transmission route (hereinafter referred to as light path) in the lens assembly by reflection, so that the first light rays no longer continue to propagate according to the incident direction D0, but propagate along other directions (such as the first direction D1).

[0095] For example, the first optical path adjustment unit 100 can be a single prism, a mirror assembly, a combination of a lens group and a mirror or prism, a total internal reflection fiber, or other optical structures, as long as they can achieve the same optical path adjustment function. This application does not impose specific limitations on the embodiments. If the first optical path adjustment unit 100 adopts a prism, the object side or image side of the first optical path adjustment unit 100 can be a plane, a sphere, an aspherical surface, or a freeform surface, etc.

[0096] In some embodiments, the first optical path adjustment unit 100 may include a first reflective surface 101, a first light-incident surface 102, and a first light-exiting surface 103, wherein the first reflective surface 101 is connected between the first light-incident surface 102 and the first light-exiting surface 103. The first light-incident surface 102 faces the object side and is perpendicular to the z-axis; the first light-exiting surface 103 faces the image side and is perpendicular to the x-axis.

[0097] The first reflecting surface 101 is inclined relative to the optical axis and faces the object side and the first direction D1, so as to reflect the incident light from the object side toward the first direction D1. For example, the first reflecting surface 101 can be inclined at 45°.

[0098] The first incident surface 102 receives a first light ray from the object side, and the first light ray enters the first optical path adjustment unit 100 via the first incident surface 102. The first reflecting surface 101 is configured to receive the first light ray from the object side and reflect the first light ray to control the propagation of the first light ray along a first direction D1, which is different from the incident direction D0 of the first light ray. The first reflecting surface 101 reflects the first light ray entering via the first incident surface 102 so that the first light ray exits from the first exit surface 103 along the first direction D1.

[0099] In this way, the first reflective surface 101 can be used to adjust the optical path of the first light ray, change the propagation direction of the first light ray, and thereby reduce the size of the lens assembly along the incident direction D0.

[0100] Figure 5 This is a schematic diagram of the second optical axis of the lens assembly provided in the embodiments of this application.

[0101] In some embodiments, such as Figure 5 As shown, the second optical path adjustment unit 200 is located on the light-emitting side of the first optical path adjustment unit 100, that is, on one side of the image side of the first optical path adjustment unit 100. The second optical path adjustment unit 200 is configured to control the first light ray to propagate to the image side along the second direction D2. The second direction D2 is different from the first direction D1; the second direction D2 can be perpendicular to the first direction D1, or it can be at an angle, etc.

[0102] The second light path adjusting unit 200 can achieve the purpose of light path turning by transmitting and / or reflecting the light path, so that the first light no longer continues to propagate in the first direction D1, but propagates in other directions (such as the second direction D2).

[0103] For example, the second light path adjusting unit 200 can be a single / multiple prism, a mirror surface assembly, a lens assembly, a combination of a mirror and a prism, a total reflection optical fiber, or other optical structures as long as the same light path adjusting function can be achieved, and the embodiments of the present application are not limited specifically. If the second light path adjusting unit 200 adopts a prism mode, the object side surface or the image side surface of the second light path adjusting unit 200 can be a plane, a spherical surface, an aspherical surface, or a free-form surface, etc.

[0104] In some embodiments, the second light path adjusting unit 200 can include a second reflecting surface 201, a third reflecting surface 202, a second light entrance surface 203, and a second light exit surface 204. The second light entrance surface 203 is connected between the third reflecting surface 202 and the second light exit surface 204; the second light entrance surface 203 faces the object side and is perpendicular to the x-axis. The second light exit surface 204 is connected between the second light entrance surface 203 and the second reflecting surface 201; the second light exit surface 204 faces the image side and is perpendicular to the y-axis. The second reflecting surface 201 and the third reflecting surface 202 are both arranged obliquely relative to the optical axis to achieve the reflecting effect.

[0105] The second reflecting surface 201 is configured to receive the first light propagating in the first direction D1 and reflect the first light for the first time to control the first light to propagate to the third reflecting surface 202. The third reflecting surface 202 is configured to reflect the first light after the first reflection for the second time to control the first light to propagate to the image side in the second direction D2.

[0106] The first light emitted by the first light path adjusting unit 100 enters the second light path adjusting unit 200 through the second light entrance surface 203 and is reflected on the second reflecting surface 201 and the third reflecting surface 202 in sequence, and is emitted to the image side in the second direction D2 through the second light exit surface 204.

[0107] In this way, the second reflecting surface 201 and the third reflecting surface 202 can be used to reflect the first light twice to adjust the light path again, so as to change the light path of the first light from the first direction D1 to the second direction D2, thereby reducing the size of the lens assembly in the first direction D1.

[0108] In one implementation, the second optical path adjustment unit 200 can be a polygonal structure; for example, the second optical path adjustment unit 200 is a pentagonal structure. The second reflecting surface 201 is adjacent to the image side and faces the first optical path adjustment unit 100; the third reflecting surface 202 is located between the first optical path adjustment unit 100 and the second reflecting surface 201, and faces the image side. In this embodiment, the tilt angle of the second reflecting surface 201 and the third reflecting surface 202 is not limited, so as to redirect the first ray transmitted along the first direction D1 to the second direction D2 for continued transmission.

[0109] Since both the first optical path adjustment unit 100 and the second optical path adjustment unit 200 have optical path adjustment functions, the optical axis of the lens assembly is not along the same direction.

[0110] Combination Figure 4 and Figure 5 As shown, the optical axis of the lens assembly may include a first optical axis segment z1, a second optical axis segment z2, and a third optical axis segment z3. For ease of description, the portion of the optical axis segment that bends between the second reflecting surface 201 and the third reflecting surface 202 is ignored. The first optical axis segment z1 is formed between the object side and the first optical path adjustment unit 100, and the first optical axis segment z1 is parallel to the z-axis direction. The second optical axis segment z2 is formed between the first optical path adjustment unit 100 and the second optical path adjustment unit 200, and the second optical axis segment z2 is parallel to the x-axis direction. The third optical axis segment z3 is formed between the second optical path adjustment unit 200 and the image side, and the third optical axis segment z3 is parallel to the y-axis direction.

[0111] Thus, the first optical axis segment z1 is perpendicular to the second optical axis segment z2, and the second optical axis segment z2 is perpendicular to the third optical axis segment z3. Utilizing the optical path redirection function of the first optical path adjustment unit 100 and the second optical path adjustment unit 200, the optical axis can be sequentially rotated by 90°.

[0112] Figure 6 This is a schematic diagram of the third optical axis of the lens assembly provided in the embodiments of this application.

[0113] like Figure 6 As shown, in another implementation, the second optical path adjustment unit 200 can be an isosceles trapezoidal structure, with the second incident surface 203 and the second exiting surface 204 coplanar. The second reflecting surface 201 is adjacent to the first optical path adjustment unit 100 and is inclined towards the first optical path adjustment unit 100 along the y-axis direction; the third reflecting surface 202 is located on the side opposite to the second reflecting surface 201 along the y-axis direction and is inclined towards the image side along the y-axis direction. The second reflecting surface 201 and the third reflecting surface 202 are mirror images of each other along a direction parallel to the second optical axis segment z2. For example, both the second reflecting surface 201 and the third reflecting surface 202 can be tilted at 45°.

[0114] Thus, the optical axis can be turned by 90° at the second reflecting surface 201 and transmitted to the third reflecting surface 202, and turned by 90° again at the third reflecting surface 202 and transmitted to the image side. The portion of the optical axis that is turned between the second reflecting surface 201 and the third reflecting surface 202 is determined as a fourth optical axis segment z4. The second optical axis segment z2 is connected to and perpendicular to the fourth optical axis segment z4, and the fourth optical axis segment z4 is connected to and perpendicular to the third optical axis segment z3.

[0115] In this structure, the optical axis of the lens assembly can include the first optical axis segment z1, the second optical axis segment z2, the fourth optical axis segment z4, and the third optical axis segment z3 in sequence. The fourth optical axis segment z4 is parallel to the y-axis direction, the third optical axis segment z3 is parallel to the x-axis direction, and the transmission direction of the first light along the second optical axis segment z2 is opposite to the transmission direction along the third optical axis segment z3. Thus, the optical axis can be turned by 90° by the light path turning effect of the first light path adjusting unit 100, and turned by 180° by the light path turning effect of the second light path adjusting unit 200.

[0116] In the lens assembly with the second light path adjusting unit 200 in the isosceles trapezoidal structure in the embodiments of the present application, the image side is adjacent to the first light path adjusting unit 100, so that the size of the lens assembly in the y-axis direction can be reduced.

[0117] Referring again to Figure 5 In some embodiments, the focusing unit 300 is located on the light path of the first light and is perpendicular to the optical axis of the lens assembly.

[0118] For example, as Figure 5 shown in the state, the focusing unit 300 can be located on the light path of the first light in the first direction D1, so that the focusing unit 300 is located between the first light path adjusting unit 100 and the second light path adjusting unit 200, and the focusing unit 300 is perpendicular to the second optical axis segment z2 of the optical axis; when optical focusing is implemented, the focusing unit 300 moves in the direction of the second optical axis segment z2. The focusing unit 300 can also be located on the light path of the first light in the second direction D2, so that the focusing unit 300 is located between the second light path adjusting unit 200 and the image side, and the focusing unit 300 is perpendicular to the third optical axis segment z3 of the optical axis; when optical focusing is implemented, the focusing unit 300 moves in the direction of the third optical axis segment z3.

[0119] The focusing unit 300 includes a plurality of lenses, such as a first lens 301 and a second lens 302. The first lens 301 and the second lens 302 are arranged in sequence on the light path of the first light, and the first lens 301 and the second lens 302 are both perpendicular to the optical axis.

[0120] For example, the first lens 301 and the second lens 302 are sequentially distributed along the optical path of the first ray in the first direction D1, and both are perpendicular to the second optical axis segment z2; or, the first lens 301 and the second lens 302 are sequentially distributed along the optical path of the first ray in the second direction D2, and both are perpendicular to the third optical axis segment z3.

[0121] In this embodiment, the focusing unit 300 is formed by a lens group. When the lens assembly needs to focus, only one lens group is needed to achieve focusing, instead of using the entire lens assembly. This reduces the focusing distance, improves focusing capability, and achieves significant weight reduction. Furthermore, it eliminates the need for an additional long-stroke drive motor to move the lens assembly, further reducing its size. Simultaneously, using a separate lens group to form the focusing unit 300 can suppress variations in aberrations, primarily spherical aberration, when focusing from an infinity object to a closer object, thereby improving image quality.

[0122] In some embodiments, the image stabilization unit 400 is located along the optical path of the first light ray, and the image stabilization unit 400 is perpendicular to the optical axis of the lens assembly.

[0123] For example, such as Figure 5 In the indicated state, the image stabilization unit 400 can be located on the optical path of the first ray along the first direction D1. Thus, the image stabilization unit 400 is positioned between the first optical path adjustment unit 100 and the second optical path adjustment unit 200, and the image stabilization unit 400 is perpendicular to the second optical axis segment z2. When optical image stabilization is achieved, the image stabilization unit 400 moves in a direction perpendicular to the second optical axis segment z2. Alternatively, the image stabilization unit 400 can be located on the optical path of the first ray along the second direction D2. Thus, the image stabilization unit 400 is positioned between the second optical path adjustment unit 200 and the image side, and the image stabilization unit 400 is perpendicular to the third optical axis segment z3. When optical image stabilization is achieved, the image stabilization unit 400 moves in a direction perpendicular to the third optical axis segment z3.

[0124] The image stabilization unit 400 includes multiple lenses, such as a third lens 401 and a fourth lens 402. The third lens 401 and the fourth lens 402 are sequentially distributed along the optical path of the first ray, and both the third lens 401 and the fourth lens 402 are perpendicular to the optical axis.

[0125] For example, the third lens 401 and the fourth lens 402 are sequentially distributed along the optical path of the first ray in the first direction D1, and are both perpendicular to the second optical axis segment z2 of the optical axis; or, the third lens 401 and the fourth lens 402 are sequentially distributed along the optical path of the first ray in the second direction D2, and are both perpendicular to the third optical axis segment z3 of the optical axis.

[0126] In this embodiment, the image stabilization unit 400 is formed by a lens group. When the lens assembly needs image stabilization, only one lens group is needed to achieve image stabilization, eliminating the need to drive the rotation of the prism in front of the lens to achieve optical image stabilization. This reduces the requirements for the drive motor and fully realizes lightweight design. By using an independent lens group to form the image stabilization unit 400, image shift caused by hand or body shaking due to lens assembly tilt can be compensated when shooting objects with the lens assembly, thereby improving image quality.

[0127] In some embodiments, the compensation unit 500 is located along the optical path of the first ray, and the compensation unit 500 is perpendicular to the optical axis of the lens assembly.

[0128] For example, such as Figure 5 In the indicated state, the compensation unit 500 can be located on the optical path of the first ray along the first direction D1. In this case, the compensation unit 500 is located between the first optical path adjustment unit 100 and the second optical path adjustment unit 200, and the compensation unit 500 is perpendicular to the second optical axis segment z2 of the optical axis. Alternatively, the compensation unit 500 can be located on the optical path of the first ray along the second direction D2. In this case, the compensation unit 500 is located between the second optical path adjustment unit 200 and the image side, and the compensation unit 500 is perpendicular to the third optical axis segment z3 of the optical axis.

[0129] The compensation unit 500 includes multiple lenses, such as a fifth lens 501 and a sixth lens 502. The fifth lens 501 and the sixth lens 502 are sequentially distributed along the optical path of the first ray, and both the fifth lens 501 and the sixth lens 502 are perpendicular to the optical axis.

[0130] For example, the fifth lens 501 and the sixth lens 502 are sequentially distributed along the optical path of the first ray in the first direction D1, and are both perpendicular to the second optical axis segment z2 of the optical axis; or, as Figure 5 As shown, the fifth lens 501 and the sixth lens 502 are sequentially distributed along the optical path of the second direction D2 of the first ray, and are both perpendicular to the third optical axis segment z3 of the optical axis.

[0131] Multiple lenses can form a set light transmission path, so that after the first light enters the compensation unit 500, the first light can be transmitted along the set light transmission path to compensate for aberration changes caused by the movement of the focusing unit 300 and / or the image stabilization unit 400, thereby improving image quality.

[0132] The compensation unit 500 can move along the optical axis. For example, when the compensation unit 500 is located on the optical path of the first ray along the first direction D1, in order to achieve optical compensation, the compensation unit 500 can move along the direction of the second optical axis segment z2.

[0133] By moving the compensation unit 500, the first light rays output from the first light path adjustment unit 100 or the second light path adjustment unit 200 can be compensated to assist the zooming of the focusing unit 300 and the anti-shake of the anti-shake unit 400. For example, in the case of first light rays with more divergence, the compensation unit 500 can focus more divergent light rays to improve the imaging quality.

[0134] It should be noted that in order to ensure that the path of the set light transmission path is unchanged, each lens in the compensation unit 500 can be moved simultaneously.

[0135] In some embodiments, the number of compensation units 500 is one or more, and the plurality of compensation units 500 are arranged along the optical axis. The plurality of compensation units 500 can be arranged on the same optical axis segment or on different optical axis segments. For example, Figure 5 It is shown that the lens assembly includes two compensation units 500, which are sequentially distributed along the light path of the second direction D2 of the first light rays and are perpendicular to the third optical axis segment z3 of the optical axis.

[0136] In the embodiments of the present application, the compensation unit 500 is formed by a lens group. When the lens assembly needs to be optically compensated, only one lens group is used to achieve compensation, which has low requirements for driving motors and fully realizes lightweight. The compensation unit 500 formed by an independent lens group can compensate for the change of aberration caused by the movement of the focusing unit 300 and / or the anti-shake unit 400 when the object is photographed by the lens assembly, thereby improving the imaging quality.

[0137] In some embodiments, the focusing unit 300, the anti-shake unit 400 and the compensation unit 500 are all realized by independent lens groups. The lenses can be made of glass, resin (such as plastic) or other light-transmitting materials. The plurality of lenses can be arranged with intervals or attached. The plurality of lenses can be formed into a lens group in a glued or unglued manner. For example, when the lens group is formed in a glued manner, each lens needs to be made of glass.

[0138] The object side or image side of the lens can be flat, concave or convex, etc. In an implementation, the surface types of the opposite object side and image side of two adjacent lenses can be adapted to each other to achieve seamless fitting or spacing of the two adjacent lenses. For example, in the focusing unit 300, the image side of the first lens 301 is concave, and the object side of the second lens 302 is convex, so that the first lens 301 and the second lens 302 can be seamlessly fitted. In this case, the image side of the first lens 301 and the object side of the second lens 302 share a surface. In the anti-shake unit 400, the image side of the third lens 401 is convex, and the object side of the fourth lens 402 is concave, and the curvatures of the image side of the third lens 401 and the object side of the fourth lens 402 are different, so that there can be a gap between the image side of the third lens 401 and the object side of the fourth lens 402.

[0139] In another implementation, the surface types of the opposite object side and image side of two adjacent lenses can be the same, for example, the image side of the lens adjacent to the object side and the object side of the lens adjacent to the image side are both flat, or both convex, or both concave, so that there is a gap between the two adjacent lenses. For example, along the optical axis direction, the image side of the left lens is convex, and the object side of the right lens is convex, so that the left lens and the right lens only contact at the optical axis, and there is a gap between the remaining regions.

[0140] In some embodiments, the lenses of the focusing unit 300, the anti-shake unit 400 and the compensation unit 500 can be aspherical lenses or spherical lenses, and the embodiments of the present application do not limit this.

[0141] The aspherical lens refers to a lens whose curved surface is not of the same curvature, but is composed of multiple curved surfaces. In this way, the spherical aberration and distortion aberration can be well compensated, which can further help to achieve a large aperture performance of the lens assembly, and also helps to reduce the total length of the lens assembly.

[0142] For example, the aspherical surface shape of each lens can be defined by, but not limited to, the following aspherical curve equation:

[0143]

[0144] wherein z is the depth of the aspherical surface; c is the curvature of the vertex of the aspherical surface, c = 1 / R, R is the radius of curvature of the lens surface; k is the conic coefficient; is the radial distance (mirror center height); r n is the normalized radius, u = r / r n ; a m is the mth order Q con coefficient (aspherical coefficient), Q m conQm con polynomial.

[0145] In this way, by using lenses with different surface shapes, the lens assembly can converge light rays better, and the effect of increasing the aperture can be achieved.

[0146] In some embodiments, the relative positions of the anti-shake unit 400, the focusing unit 300, and the compensation unit 500 are not limited, and only need to be located on the optical path of the first light in the first direction D1 and perpendicular to the optical axis.

[0147] In the first implementation, as shown in the state Figure 5 The focusing unit 300 and the anti-shake unit 400 are located on the optical path of the first light in the first direction D1, and the compensation unit 500 is located on the optical path of the first light in the second direction D2. That is, the focusing unit 300 and the anti-shake unit 400 are located between the first optical path adjusting unit 100 and the second optical path adjusting unit 200, and the compensation unit 500 is located between the second optical path adjusting unit 200 and the image side. Wherein, the relative positions of the focusing unit 300 and the anti-shake unit 400 are not limited, and the two have a gap in the first direction D1. For example, the focusing unit 300 can be adjacent to the first optical path adjusting unit 100, the anti-shake unit 400 can be adjacent to the second optical path adjusting unit 200, or vice versa.

[0148] In the second implementation, the anti-shake unit 400 and the compensation unit 500 are located on the optical path of the first light in the first direction D1, and the focusing unit 300 is located on the optical path of the first light in the second direction D2. That is, the anti-shake unit 400 and the compensation unit 500 are located between the first optical path adjusting unit 100 and the second optical path adjusting unit 200, and the focusing unit 300 is located between the second optical path adjusting unit 200 and the image side.

[0149] In the third implementation, the focusing unit 300 and the compensation unit 500 are located on the optical path of the first light in the first direction D1, and the anti-shake unit 400 is located on the optical path of the first light in the second direction D2. That is, the focusing unit 300 and the compensation unit 500 are located between the first optical path adjusting unit 100 and the second optical path adjusting unit 200, and the anti-shake unit 400 is located between the second optical path adjusting unit 200 and the image side. Wherein, the order of the focusing unit 300 and the compensation unit 500 is not limited, and the two have a gap in the first direction D1. For example, the focusing unit 300 can be adjacent to the first optical path adjusting unit 100, the compensation unit 500 can be adjacent to the second optical path adjusting unit 200, or vice versa.

[0150] In the fourth implementation, the focusing unit 300, the anti-shake unit 400, and the compensation unit 500 are all located on the light path of the first light ray along the second direction D2. That is, the focusing unit 300, the anti-shake unit 400, and the compensation unit 500 are all located between the second light path adjustment unit 200 and the image side, and the order of the focusing unit 300, the anti-shake unit 400, and the compensation unit 500 is not limited, and the three have intervals along the second direction D2.

[0151] It should be noted that the anti-shake unit 400, the focusing unit 300, and the compensation unit 500 can also adopt other settings, and the embodiments of the present application do not enumerate them one by one.

[0152] In the embodiments of the present application, the anti-shake unit 400, the focusing unit 300, and the compensation unit 500 adopt different settings, which can form lens assemblies with different sizes and shapes, so that the structure of the lens assembly is compact and small in size, thereby realizing miniaturization.

[0153] Again referring to Figure 4 In some embodiments, the lens assembly can further include a diaphragm (not shown in the figure) and a filter 600. The diaphragm can be an element for restricting and limiting incident light, for limiting the size of incident light and controlling the depth of field. The diaphragm is located closest to the object side, and the diaphragm is located at the front end of the first light path adjustment unit 100, so that the incident light needs to pass through the diaphragm first when entering the lens assembly.

[0154] For example, the diaphragm can be an aperture diaphragm, the shape of the effective light passage of the diaphragm can be circular, the face of the effective light passage of the diaphragm can be perpendicular to the first optical axis segment z1 of the optical axis of the lens assembly, and the center of the effective light passage of the diaphragm can be located on the first optical axis segment z1.

[0155] The filter 600 is located close to the image side, for example, the filter 600 is located on one side of the image side of the focusing unit 300. The filter 600 is used to filter infrared light in the light ray, improve the effective resolution and color restoration of the lens, and make the imaging clearer and more stable.

[0156] In some embodiments, when shooting a distant object, n light rays with different angles enter the lens assembly. The light path of the light ray can be parallel to the optical axis or inclined relative to the optical axis, and the propagation direction of the light path of the light ray depends on the angle of the incident light.

[0157] Again referring to Figure 5 and Figure 6 For example, the first light ray A1 enters the lens assembly, wherein the first light ray A1 enters the lens assembly along a direction perpendicular to the rear shell 30, that is, the first light ray A1 enters the lens assembly along the optical axis direction.

[0158] The first light ray A1 enters the first optical path adjusting unit 100 along the first optical axis segment z1 of the optical axis, and is transmitted to the first reflecting surface 101. The first light ray A1 is reflected at the first reflecting surface 101, changes the optical path, and continues to propagate along the first direction D1. In this scenario, the incident direction D0 is parallel to the direction (z-axis direction) of the first optical axis segment z1, the first direction D1 is parallel to the direction (x-axis direction) of the second optical axis segment z2, and the incident direction D0 is perpendicular to the first direction D1.

[0159] The first light ray A1 transmitted along the x-axis direction enters the second optical path adjusting unit 200, is reflected at the second reflecting surface 201, changes the optical path, and propagates to the third reflecting surface 202. The first light ray A1 is reflected again at the third reflecting surface 202, changes the optical path, and propagates to the image side along the second direction. In this scenario, the second direction is parallel to the direction (y-axis direction) of the third optical axis segment z3, and the second direction D2 is perpendicular to the first direction D1.

[0160] In the lens assembly shown in FIG. 1, Figure 7 In the lens assembly shown in FIG. 1,

[0161] Figure 7 FIG. 1 is a schematic diagram of an optical path of a lens assembly provided by an embodiment of the present application. In FIG. 1, Figure 3 is a side view of another perspective of Figure 4

[0162] In combination with FIGS. 1 and 2, Figure 7 and Figure 6 In some embodiments, for other light rays A n-1 other than the first light ray A1, the other light rays A n-1 enter the first optical path adjusting unit 100 along a direction having an angle with respect to the first optical axis segment z1, and are transmitted to the first reflecting surface 101. The other light rays A n-1 are reflected at the first reflecting surface 101, change the optical path, and continue to propagate along the first direction D1. In this scenario, the incident direction D0 has an angle with respect to the direction (z-axis direction) of the first optical axis segment z1, the first direction D1 has an angle with respect to the direction (x-axis direction) of the second optical axis segment z2, and the incident direction D0 can be perpendicular or not perpendicular to the first direction D1.

[0163] ​The first light ray A1 transmitted along the first direction D1 enters the second light path adjusting unit 200, is reflected at the second reflecting surface 201, changes the light path direction and propagates to the third reflecting surface 202. The first light ray A1 is reflected again at the third reflecting surface 202, changes the light path and propagates to the image side along the second direction D2. In this scenario, the second direction D2 has a certain angle with the direction (y-axis direction) of the third optical axis segment z3, and the second direction D2 can be perpendicular to the first direction D1 or not.

[0164] In Figure 5 In the lens assembly shown in the figure, the second direction D2 has a certain angle with the direction (x-axis direction) of the third optical axis segment z3, and the second direction D2 can be parallel to the first direction D1 or not, but the directions are opposite.

[0165] The lens assembly provided by the embodiments of the present application uses the reflection of the first light path adjusting unit 100 to deflect the light transmission route in the lens assembly, such as adjusting the light path of the first light ray from the incident direction along the z-axis to propagate along the x-axis direction, so that the light ray no longer propagates completely along the z-axis direction. In this way, the volume of the component originally accumulated in the longitudinal direction (such as the z-axis direction) can be converted to the transverse direction (such as the x-axis direction), so as to reduce the space occupied by the lens assembly in the z-axis direction of the electronic device, thereby meeting the thinness characteristic of the electronic device. The second light path adjusting unit 200 transmits and / or reflects the light path of the first light ray to achieve the purpose of light path turning, such as adjusting the propagation along the x-axis direction to the propagation along the y-axis direction, thereby reducing the total length of the lens assembly. In this way, the first light ray is transmitted and / or reflected multiple times by the first light path adjusting unit 100 and the second light path adjusting unit 200, and in the case of meeting the thinness of the electronic device, a super long focal length is realized. At the same time, the lens assembly has focusing function, anti-shake function and compensation function, and the first light ray is processed by the focusing unit, the anti-shake unit and the compensation unit to improve the imaging quality.

[0166] In some embodiments, the lens assembly has an effective focal length F (unit: mm), such as Figure 5 As shown in the figure, the lens assembly has a length L (unit: mm) in the first direction (x-axis direction). The length L is the distance between the outermost side of the first light path adjusting unit 100 and the outermost side of the second light path adjusting unit 200 along the x-axis direction.

[0167] The length L and the effective focal length F satisfy: 0.7 < L / F < 1; the effective focal length F satisfies: F > 40 mm, preferably F > 45 mm.

[0168] Exemplarily, the length L can be 36.94 mm, 37.89 mm, 39.37 mm, 43.16 mm, 42.22 mm, 39.85 mm, 40.73 mm, or 40.8 mm, etc. The effective focal length F can be 47.92 mm, 47.95 mm, 47.96 mm, 47.97 mm, 47.98 mm, 48 mm, or 48.01 mm, etc. L / F can be 0.7, 0.77, 0.79, 0.82, 0.83, 0.85, 0.88, 0.9, or 1, etc.

[0169] In this way, by restricting the effective focal length F of the lens assembly, the lens assembly has an ultra-long focal length. Moreover, by controlling the ratio of the length of the optical total length of the long-focus lens assembly in the x-axis direction to the effective focal length F, the length of the long-focus lens assembly in the normal direction of the imaging surface, i.e., the horizontal direction in normal use, can be controlled, and the structural size of the long-focus lens assembly can be prevented from being too large, so as to better meet the requirements of small size and compact structure of the portable electronic device.

[0170] In some embodiments, the lens assembly has an entrance pupil diameter EPD (unit: mm), as shown in Figure 4 As shown, the lens assembly has a width W (unit: mm) in the second direction (y-axis direction). The width W is the distance between the outermost side of the second optical path adjusting unit 200 and the image side (such as the imaging surface) in the y-axis direction.

[0171] The width W and the entrance pupil diameter EPD satisfy: 1.5 < W / EPD < 3.

[0172] Exemplarily, the width W can be 20.98 mm, 22.61 mm, 22.74 mm, 24.13 mm, 26.48 mm, 27.17 mm, 29.2 mm, or 32.95 mm, etc. The entrance pupil diameter EPD can be 11.98 mm, 13.7 mm, 13.71 mm, or 13.72 mm, etc. W / EPD can be 1.5, 1.53, 1.65, 1.66, 1.76, 1.93, 1.98, 2.13, 2.75, or 3, etc.

[0173] In this way, by controlling the ratio of the width of the long-focus lens assembly in the vertical y-axis direction to the entrance pupil diameter, the structural size of the long-focus lens assembly can be effectively ensured not to be too large, so that the portable electronic device installed with the long-focus lens assembly can meet the requirements of small size and compact structure.

[0174] In some embodiments, as shown in Figure 5 The long-focus lens assembly has a height H in the z-axis direction, and satisfies H < 13 mm. The height H is the maximum thickness of the first optical path adjusting unit 100 or the anti-shake unit 400 in the z-axis direction.

[0175] In this way, by rationally designing the lens assembly and cutting the lens unit at the same time, the structure size of the long-focus optical imaging system can be effectively ensured not to be too large, so that the portable electronic device installed with the long-focus optical imaging system can meet the market demand for small size and compact structure.

[0176] In some embodiments, the focusing unit 300 has a focal length FGA (unit: mm), and the focal length FGA and the effective focal length F of the lens assembly satisfy: 0.4<|FGA / F|<2.0.

[0177] For example, FGA can be -72.29 mm, -70.46 mm, -62.67 mm, -28.79 mm, 23.4 mm, 43.57 mm, 60.15 mm, or 95.84 mm, etc. |FGA / F| can be 0.4, 0.49, 0.6, 0.91, 1.25, 1.31, 1.51, 1.47, or 2.0, etc.

[0178] In this way, by the effective focal length F of the lens assembly, the focal length FGA of the focusing unit 300 in the lens assembly can be rationally set, so as to reduce the change of each aberration, especially the spherical aberration, when the lens assembly focuses from an infinite distance object to a close distance object, while ensuring a better balance between the size and imaging quality of the lens assembly.

[0179] In some embodiments, the anti-shake unit 400 has a focal length FGO (unit: mm), and the focal length FGO and the effective focal length F of the lens assembly satisfy: 0.5<|FGO / F|<1.6.

[0180] For example, FGO can be -42.62 mm, -37.33 mm, -37.1 mm, -33.822 mm, -24 mm, 52.08 mm, 54.39 mm, or 76.4 mm, etc. |FGO / F| can be 0.5, 0.71, 0.77, 0.78, 0.89, 1.08, 1.13, 1.59, or 1.6, etc.

[0181] In this way, by the effective focal length F of the lens assembly, the focal length FGO of the anti-shake unit 400 in the lens assembly can be rationally set, so as to compensate for the image offset caused by the lens tilting a certain angle due to hand shaking or body shaking, while ensuring a better balance between the size and imaging quality of the lens assembly.

[0182] In some embodiments, the compensation unit 500 has a focal length FGC (unit: mm), and the focal length FGC and the effective focal length F of the lens assembly satisfy: 0.4<|FGC / F|<5.0.

[0183] Exemplarily, the FGC can be -92.08 mm, -91.08 mm, -76.43 mm, -39.61 mm, -35.18 mm, 20.21 mm, 160.36 mm, or 239.61 mm, etc. The |FGC / F| can be 0.4, 0.42, 0.73, 0.83, 1.59, 1.9, 1.92, 3.34, or 5, etc.

[0184] In this way, the focal length of the compensation lens unit of the imaging system can be reasonably set, the aberration variation caused by the movement of the focusing lens unit GA and the anti-shake unit GO can be appropriately corrected, and the size and the imaging quality of the imaging system can be better balanced.

[0185] In some embodiments, the lens assembly has an aperture value F#, and the aperture value F# satisfies: F#≤4.0.

[0186] Exemplarily, the F# can be 3.5 or 4, etc.

[0187] In this way, the entrance pupil diameter of the lens assembly can be increased, and the imaging quality of the lens assembly in a dark environment can be improved.

[0188] In some embodiments, the focusing unit 300 has a total thickness TGA (unit: mm), where the total thickness TGA is the distance between the object side surface of the lens adjacent to the object side and the image side surface of the lens adjacent to the image side, for example, as shown in FIG. 3, the total thickness TGA is the distance between the object side surface of the first lens 301 and the image side surface of the second lens 302. Figure 5

[0189] The total thickness TGA and the entrance pupil diameter EPD of the lens assembly satisfy: 0.15<TGA / EPD<0.5.

[0190] Exemplarily, the TGA can be 2.472 mm, 2.652 mm, 4.027 mm, 4.688 mm, 4.72 mm, 5.02 mm, 5.087 mm, or 5.983 mm, etc. The TGA / EPD can be 0.15, 0.18, 0.19, 0.29, 0.34, 0.37, or 0.5, etc.

[0191] In this way, by controlling the ratio of the total thickness TGA of the focusing unit 300 of the long-focus lens assembly and the entrance pupil diameter EPD, the length of the long-focus lens assembly in the normal direction of the imaging surface, i.e., the horizontal direction when usually used, can be controlled, and the structure size of the long-focus lens assembly can be prevented from being too large; at the same time, the total thickness of the small focusing unit 300 can be ensured to be small, so as to reduce the requirements on the motor stroke and precision. Therefore, the requirements on the small size and compact structure of the portable electronic device can be better met.

[0192] ​In some embodiments, the anti-shake unit 400 has a total thickness TGO (in mm), where the total thickness TGO is the distance between the object side surface of the lens adjacent to the object side and the image side surface of the lens adjacent to the image side, for example, as shown in Figure 8 the total thickness TGO is the distance between the object side surface of the third lens 401 and the image side surface of the fourth lens 402.

[0193] The total thickness TGO and the entrance pupil diameter EPD of the lens assembly satisfy: 0.15 < TGO / EPD < 0.6.

[0194] For example, the TGO can be 2.525 mm, 3.686 mm, 3.879 mm, 4.209 mm, 5.087 mm, 5.109 mm, 5.983 mm, or 7.748 mm, etc. The TGO / EPD can be 0.15, 0.18, 0.27, 0.28, 0.31, 0.37, 0.5, 0.56, or 0.6, etc.

[0195] In this way, by controlling the ratio of the total thickness TGO of the anti-shake unit 400 of the telephoto lens assembly and the entrance pupil diameter EPD, the length of the telephoto lens assembly in the normal direction of the imaging surface, i.e., the horizontal direction when in use, can be controlled, and the structural size of the telephoto lens assembly can be prevented from being too large. At the same time, a smaller total thickness of the anti-shake unit 400 can be ensured, and the requirements for the stroke and precision of the motor can be reduced. Therefore, the requirements for small size and compact structure of the portable electronic device can be better met.

[0196] In some embodiments, the focusing unit 300 has a focusing movement stroke DGA (in mm), and the focusing movement stroke DGA of the focusing unit 300 and the effective focal length F of the lens assembly satisfy: 0.55 < DGA / F^2x1000 < 1.05. The focusing movement stroke DGA refers to the movement stroke of the focusing unit 300 from focusing on an infinite distance object to focusing on a close distance 1 meter object.

[0197] For example, the DGA can be 1.374 mm, 1.376 mm, 1.47 mm, 1.748 mm, or 2.4 mm, etc. The DGA / F^2x1000 can be 0.55, 0.6, 0.64, 0.76, 1.04, or 1.05, etc.

[0198] In this way, the movement stroke of the driving motor can be reasonably allocated, and at the same time, the focusing precision of the motor can be ensured.

[0199] In some embodiments, the anti-shake unit 400 has an anti-shake angle OA (in degrees) and an anti-shake stroke DGO (in mm), which can also be referred to as an anti-shake translation amount. The anti-shake angle OA and the anti-shake stroke DGO satisfy: 0.8 < |DGO / OA| < 1.5, in mm / °.

[0200] For example, OA can be 0.5°, etc. DGO can be -0.498 mm, 0.474 mm, 0.482 mm, 0.499 mm, 0.5 mm, 0.649 mm, 0.626 mm, or 0.75 mm, etc. |DGO / OA| can be 0.8, 0.95, 0.96, 1.0, 1.3, 1.25, or 1.5, etc.

[0201] In this way, it is beneficial to reduce the moving stroke of the driving motor while ensuring a large enough anti-shake angle OA, so as to compress the volume of the anti-shake unit 400, while ensuring that the long-focus lens assembly has good optical performance and small structure.

[0202] The lens assembly provided by the embodiments of the present application can change the propagation path of light by using the transmission and / or reflection of the first optical path adjusting unit 100 and the second optical path adjusting unit 200. In this way, not only can the super-long focal length be achieved, but also the volume of the lens assembly can be reduced, so that the structure of the lens assembly is compact, and the internal space of the electronic device is reduced, so as to meet the development of the thin and light electronic device. At the same time, by restricting the parameters of the elements in the lens assembly, not only can the volume of each element be reduced, so that the structure of the lens assembly is compact and smaller in volume, but also the imaging quality can be improved, the requirements for the motor stroke and precision are reduced, and the full lightweight of the focusing assembly and the anti-shake assembly is ensured.

[0203] The structure and performance of the lens assembly provided by the embodiments of the present application will be described below in combination with specific embodiments (Embodiment One to Embodiment Eight). For ease of description, the first optical path adjusting unit 100 is denoted as GP1, the second optical path adjusting unit 200 is denoted as GP2, the focusing unit 300 is denoted as GA, the anti-shake unit 400 is denoted as GO, and the compensation unit 500 is denoted as GC.

[0204] Embodiment One:

[0205] Figure 8 is a structural schematic diagram of the lens assembly provided by Embodiment One of the present application. The structure and performance of the lens assembly provided by Embodiment One of the present application will be described below with reference to Figure 8

[0206] As shown in FIG. 1, the lens assembly provided by Embodiment One of the present application includes a first optical path adjusting unit 100, a second optical path adjusting unit 200, a focusing unit 300, an anti-shake unit 400, and a compensation unit 500. Figure 4 ​As shown, the lens assembly includes, along the optical axis, from the object side to the image side, a first optical path adjusting unit GP1, a focusing unit GA, an anti-shake unit GO, a second optical path adjusting unit GP2, and a compensation unit GC. An aperture stop is arranged at the front end of GP1, and a filter 600 is arranged at the image side of GC. The length L of the lens assembly provided in Embodiment I is 36.94 mm, and the width W is 29.2 mm.

[0207] The object side has an object plane. The surface of the aperture stop is S1 (as shown in Table 1-1), and GP1 includes an object side surface S2 and an image side surface S3, wherein the object side surface S2 corresponds to the first light entrance surface 102 shown in the figure, and the image side surface S3 corresponds to the first light exit surface 103 shown in the figure. Figure 4 The object side has an object plane. The surface of the aperture stop is S1 (as shown in Table 1-1), and GP1 includes an object side surface S2 and an image side surface S3, wherein the object side surface S2 corresponds to the first light entrance surface 102 shown in the figure, and the image side surface S3 corresponds to the first light exit surface 103 shown in the figure. Figure 5 The object side has an object plane. The surface of the aperture stop is S1 (as shown in Table 1-1), and GP1 includes an object side surface S2 and an image side surface S3, wherein the object side surface S2 corresponds to the first light entrance surface 102 shown in the figure, and the image side surface S3 corresponds to the first light exit surface 103 shown in the figure. Figure 5 The object side has an object plane. The surface of the aperture stop is S1 (as shown in Table 1-1), and GP1 includes an object side surface S2 and an image side surface S3, wherein the object side surface S2 corresponds to the first light entrance surface 102 shown in the figure, and the image side surface S3 corresponds to the first light exit surface 103 shown in the figure. Figure 5 The object side has an object plane. The surface of the aperture stop is S1 (as shown in Table 1-1), and GP1 includes an object side surface S2 and an image side surface S3, wherein the object side surface S2 corresponds to the first light entrance surface 102 shown in the figure, and the image side surface S3 corresponds to the first light exit surface 103 shown in the figure. Figure 5 The object side has an object plane. The surface of the aperture stop is S1 (as shown in Table 1-1), and GP1 includes an object side surface S2 and an image side surface S3, wherein the object side surface S2 corresponds to the first light entrance surface 102 shown in the figure, and the image side surface S3 corresponds to the first light exit surface 103 shown in the figure. Page Order The object side has an object plane. The surface of the aperture stop is S1 (as shown in Table 1-1), and GP1 includes an object side surface S2 and an image side surface S3, wherein the object side surface S2 corresponds to the first light entrance surface 102 shown in the figure, and the image side surface S3 corresponds to the first light exit surface 103 shown in the figure.

[0208] The object side surface S2 of the GP1 is convex at the optical axis (referred to as convex surface), and the image side surface S3 is a plane at the optical axis. In the GA, the object side surface S4 of the lens L1 is a convex surface at the optical axis, and the image side surface S5 is convex to the object side at the optical axis (referred to as concave surface). The object side surface of the lens L2 is a convex surface at the optical axis, and the image side surface S6 is a plane at the optical axis. In the GO, the object side surface S7 of the lens L3 is a convex surface at the optical axis, and the image side surface S8 is a convex surface at the optical axis. The object side surface S9 of the lens L4 is a concave surface at the optical axis, and the image side surface S10 is a concave surface at the optical axis. The object side surface S11 and the image side surface S12 of the GP2 are planes at the circumference. In the GC, the object side surface S13 of the lens L5 is a convex surface at the optical axis, and the image side surface S13 is a convex surface at the optical axis. The object side surface of the lens L6 is a concave surface at the optical axis, and the image side surface S14 is a concave surface at the optical axis. The object side surface S15 of the lens L7 is a concave surface at the optical axis, and the image side surface S16 is a convex surface at the optical axis. The object side surface of the lens L8 is a concave surface at the optical axis, and the image side surface S18 is a concave surface at the optical axis.

[0209] Table 1-1 shows optical parameters of the lens assembly provided in the first embodiment; Table 1-2 shows aspheric coefficients of the lens assembly provided in the first embodiment; Table 1-3 shows relevant data of the GA unit, the GO unit and the GC unit in the lens assembly provided in the first embodiment; and Table 1-4 shows parameter relational expressions of each element in the lens assembly provided in the first embodiment.

[0210] In some embodiments, the optical parameters of each element in the lens assembly can be set according to the data shown in Table 1-1, Table 1-2, Table 1-3 and Table 1-4.

[0211] Table 1-1 shows optical parameters of the lens assembly provided in the first embodiment; Table 1-2 shows aspheric coefficients of the lens assembly provided in the first embodiment; Table 1-3 shows relevant data of the GA unit, the GO unit and the GC unit in the lens assembly provided in the first embodiment; and Table 1-4 shows parameter relational expressions of each element in the lens assembly provided in the first embodiment.

[0212]

[0213]

[0214] Table 1-2 shows aspheric coefficients of the lens assembly provided in the first embodiment; Table 1-3 shows relevant data of the GA unit, the GO unit and the GC unit in the lens assembly provided in the first embodiment; and Table 1-4 shows parameter relational expressions of each element in the lens assembly provided in the first embodiment.

[0215] Parameter Name S2 S7 S8 S9 S10 K -13.87642229 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 A4 0.073856543 -1.950480E-01 -3.059765E-01 1.594286E+00 1.076556E+00 A6 -0.002076862 -2.871818E-02 1.160050E-02 -1.638016E-01 -1.821866E-01 A8 0.0001005 -5.556739E-03 -7.381317E-03 5.478749E-02 3.768669E-02 A10 -6.44E-06 -1.907766E-03 8.002683E-04 -9.805852E-03 -7.992875E-03 A12 2.27E-06 -5.453561E-04 -6.453256E-04 3.211783E-03 1.784184E-03 A14 -2.48E-06 1.152510E-04 2.424898E-04 -7.022963E-04 -4.317723E-04 A16 1.76E-06 -1.433422E-04 -3.048544E-04 1.302818E-04 1.462937E-04 A18 -3.09E-06 6.787361E-05 1.756927E-04 -6.034746E-06 -6.203333E-05 A20 -6.975273E-05 -1.750898E-04 -8.750243E-05 6.642228E-06 A22 4.280794E-05 1.612055E-04 1.092759E-04 2.993389E-06 A24 -1.872228E-05 -8.790309E-05 -7.694354E-05 -1.986858E-06 A26 1.086525E-05 3.322020E-05 3.075272E-05 4.772782E-06 A28 A30

[0216] Table 1-3 shows relevant data of the GA unit, the GO unit and the GC unit in the lens assembly provided in the first embodiment; and Table 1-4 shows parameter relational expressions of each element in the lens assembly provided in the first embodiment.

[0217] Parameter Value FGA (GA unit focal length, mm) TGA (GA unit thickness, mm) 60.15 DGA (AF travel, mm) 2.472 FGO (GO unit focal length, mm) 1.374 TGO (GO unit thickness, mm) -33.822 DGO (OIS translation, mm) 2.525 OA (OIS angle, °) 0.500 FGC (GC unit focal length, mm) 0.5 Conditional Expression 160.36

[0218] Table 1-4 shows parameter relational expressions of each element in the lens assembly provided in the first embodiment.

[0219] Value Figure 9 F#≤4.0 3.50 0.15 < TGA / EPD < 0.5 0.18 0.15 < TGO / EPD < 0.6 0.18 0.4 < |FGA / F| < 2.0 1.25 0.5 < | FGO / F | < 1.6 0.71 0.55 < DGA / F^2 x 1000 < 1.05 0.60 0.8 < |DGO / OA| < 1.5 1.00 0.4 < |FGC / F| < 5.0 3.34 0.7 < L / F < 1 0.77 1.5 < W / EPD < 3 2.13

[0220] It should be noted that Table 1-1 presents the surface type, radius of curvature, thickness or distance, material, refractive index, Abbe number and focal length of each lens, aperture stop and filter 600 in the lens assembly provided by Embodiment One. Among them, the radius of curvature in Table 1-1 is the radius of curvature of the object side or image side of the lens corresponding to the surface number, that is, the radius of curvature of the object side or image side of the lens corresponding to each surface number at the optical axis, and "infinite" in the "radius of curvature" parameter series means that the object side or image side of the lens is a plane; "blank" in the "material" parameter series means that the object side or image side of the lens is adjacent to air, and the corresponding "refractive index", "Abbe number" and "focal length" parameter series are also "blank".

[0221] In Embodiment One, referring to Table 1-1, the effective focal length F of the lens assembly is 47.97 mm, the F number F# is 3.5, the field of view FOV is 8.4°, and the entrance pupil diameter EPD is 13.71 mm.

[0222] The filter 600, GP1, GP2, GA, GO and GC can be made of glass or plastic material, as shown in Table 1-1.

[0223] The surface types of the object plane S0, S1 to S20, and the image plane S0 are spherical or aspherical, wherein the aspherical coefficients can be calculated based on the aspherical curve equation of the foregoing embodiments.

[0224] Referring to Table 1-2, Table 1-2 presents the aspherical coefficients of the aspherical surfaces S2, S7 to S10. Among them, K is the conic coefficient in the aspherical curve equation, A4, A6, … A30 are the 4th to 30th order aspherical coefficients of each surface, which correspond to a1, a2, … a30 in the aspherical curve equation respectively. 13 .

[0225] Referring to Table 1-3, the focal length of the GA unit FGA is 60.15 mm, the total thickness of the GA unit TGA is 2.472 mm, the focusing moving stroke of the GA unit DGA is 1.374 mm, the focal length of the GO unit FGO is -33.822 mm, the total thickness of the GO unit TGO is 2.525 mm, the anti-shake translation of the GO unit DGO is 0.5 mm, the anti-shake angle OA is 0.5°, and the focal length of the GC unit FGC is 160.36 mm.

[0226] Among them, the total thickness TGA of the GA unit is the distance between the object side S4 of the lens L1 and the image side S6 of the lens L2, and the total thickness TGO of the GO unit is the distance between the object side S7 of the lens L3 and the image side S10 of the lens L4.

[0227] Refer to Table 1-4, which presents the parameter relationships of each component in the lens assembly. Specifically, the aperture value of the lens assembly is F# 3.5; the relationship between the total thickness TGA of the focusing unit GA and the entrance pupil diameter EPD is TGA / EPD = 0.18; the relationship between the total thickness TGO of the image stabilization unit GO and the entrance pupil diameter EPD is TGO / EPD = 0.18; the relationship between the focal length FGA of the focusing unit GA and the effective focal length F of the lens assembly is |FGA / F| = 1.25; the relationship between the focal length FGO of the image stabilization unit GO and the effective focal length F of the lens assembly is |FGO / F| = 0.71; the focusing unit... The relationship between the focusing travel distance DGA of GA and the effective focal length F of the lens assembly is DGA / F^2×1000=0.6; the relationship between the stabilization angle OA of the image stabilization unit GO and the stabilization travel distance DGO is |DGO / OA|=1; the relationship between the focal length FGC of the compensation unit GC and the effective focal length F of the lens assembly is |FGC / F|=3.34; the relationship between the length L of the lens assembly and the effective focal length F is L / F=0.77; the relationship between the width W of the lens assembly and the entrance pupil diameter EPD is W / EPD=2.13.

[0228] Figure 9 These are the field curvature and distortion diagrams of the lens assembly provided in Embodiment 1 of this application. Among them, Figure 9 (a) is a field curvature diagram of the lens assembly provided in Embodiment 1 of this application. Figure 9 The solid line in (a) represents the meridional curve. Figure 9 The dashed line in (a) represents the sagittal field curve; Figure 9 (b) is a distortion diagram of the lens assembly provided in Embodiment 1 of this application.

[0229] Depend on Figure 9 As shown in the field curvature diagram (a), both the sagittal and meridional field curvatures are controlled within a small range, reflecting good control over the curvature of the imaging plane. Figure 10 As shown in the distortion diagram in Figure (b), the lens assembly provided in Embodiment 1 has smaller distortion, which means that the image deformation caused by the main beam is smaller and the imaging distortion effect is lower.

[0230] Therefore, the lens assembly provided in Embodiment 1 can achieve the goals of telephoto characteristics, miniaturization, compact structure and high image quality, while ensuring sufficient lightweighting of the focusing unit GA, the image stabilization unit GO and the compensation unit GC.

[0231] It should be noted that the definitions of the data in the tables of the following embodiments are the same as those in Tables 1-1 to 1-4 of Embodiment 1, and will not be repeated hereafter.

[0232] Example 2:

[0233] Figure 10Figure 1 is a structural schematic diagram of a lens assembly provided in Embodiment One of the present application. Embodiment One of the present application provides a lens assembly. The lens assembly comprises, in order from an object side to an image side along an optical axis, a first optical path adjusting unit GP1, an image stabilization unit GO, a focusing unit GA, a second optical path adjusting unit GP2, and a compensation unit GC. An aperture stop is arranged at a front end of the GP1, and a filter 600 is arranged at an image side of the GC. The lens assembly provided in Embodiment One of the present application has a length L = 37.89 mm and a width W = 22.61 mm. Figure 10 The structure and performance of the lens assembly provided in Embodiment One of the present application are described below.

[0234] As shown in Figure 1, the lens assembly comprises, in order from an object side to an image side along an optical axis, the first optical path adjusting unit GP1, the image stabilization unit GO, the focusing unit GA, the second optical path adjusting unit GP2, and the compensation unit GC. An aperture stop is arranged at a front end of the GP1, and a filter 600 is arranged at an image side of the GC. The lens assembly provided in Embodiment One of the present application has a length L = 37.89 mm and a width W = 22.61 mm. Parameter Name The object side has an object plane. The surface of the aperture stop is S1 (as shown in Table 2-1). The GP1 comprises an object side surface S2 and an image side surface S3. The image stabilization unit GO comprises two lenses, which are lenses L1 and L2, respectively. The lens L1 comprises an object side surface S4 and an image side surface S5; the lens L2 comprises an object side surface S6 and an image side surface S7. The focusing unit GA comprises two lenses, which are lenses L3 and L4, respectively. The lens L3 comprises an object side surface S8 and an image side surface S9; the lens L4 comprises an object side surface S10 and an image side surface S11. The GP2 comprises an object side surface S12 and an image side surface S13. The compensation unit GC comprises three lenses, which are lenses L5, L6, and L7, respectively. The lens L5 comprises an object side surface S14 and an image side surface S15; the lens L6 comprises an object side surface S16 and an image side surface S17; the lens L7 comprises an object side surface S18 and an image side surface S19. The filter 600 comprises an object side surface S20 and an image side surface S21. The image side has an image plane S0.

[0235] The object side surface S2 of the GP1 is a convex surface at the optical axis, and the image side surface S3 is a convex surface at the optical axis. In the GO, the object side surface S4 of the lens L1 is a convex surface at the optical axis, and the image side surface S5 is a convex surface at the optical axis. The object side surface S6 of the lens L2 is a concave surface at the optical axis, and the image side surface S7 is a concave surface at the optical axis. In the GA, the object side surface S8 of the lens L3 is a convex surface at the optical axis, and the image side surface S9 is a concave surface at the optical axis. The object side surface S10 of the lens L4 is a convex surface at the optical axis, and the image side surface S11 is a convex surface at the optical axis. The object side surface S12 and the image side surface S13 of the GP2 are planar surfaces at the circumference. In the GC, the object side surface S14 of the lens L5 is a concave surface at the optical axis, and the image side surface S15 is a convex surface at the optical axis. The object side surface S16 of the lens L6 is a concave surface at the optical axis, and the image side surface S17 is a concave surface at the optical axis. The object side surface S18 of the lens L7 is a convex surface at the optical axis, and the image side surface S19 is a convex surface at the optical axis.

[0236]

[0237] ​Table 2-1 shows optical parameters of the lens assembly provided in Example Two; Table 2-2 shows aspherical coefficients of the lens assembly provided in Example Two; Table 2-3 shows relevant data of the GA unit and the GO unit in the lens assembly provided in Example Two; and Table 2-4 shows parameter relational expressions of the elements in the lens assembly provided in Example Two.

[0238] In some embodiments, the lens assembly can be configured according to the data shown in Table 2-1, Table 2-2, Table 2-3, and Table 2-4.

[0239] Table 2-1 shows optical parameters of the lens assembly provided in Example Two; Table 2-2 shows aspherical coefficients of the lens assembly provided in Example Two; Table 2-3 shows relevant data of the GA unit and the GO unit in the lens assembly provided in Example Two; and Table 2-4 shows parameter relational expressions of the elements in the lens assembly provided in Example Two.

[0240]

[0241]

[0242] Table 2-2 shows aspherical coefficients of the lens assembly provided in Example Two; Table 2-3 shows relevant data of the GA unit and the GO unit in the lens assembly provided in Example Two; and Table 2-4 shows parameter relational expressions of the elements in the lens assembly provided in Example Two.

[0243]

[0244]

[0245]

[0246] Table 2-3 shows relevant data of the GA unit and the GO unit in the lens assembly provided in Example Two; and Table 2-4 shows parameter relational expressions of the elements in the lens assembly provided in Example Two.

[0247] Parameter Value FGA (GA unit focal length, mm) TGA (GA unit thickness, mm) 23.40 DGA (AF travel, mm) 4.027 FGO (GO unit focal length, mm) 1.376 TGO (GO unit thickness, mm) -37.10 DGO (OIS translation, mm) 3.686 OA (OIS angle, °) 0.499 FGC (GC unit focal length, mm) 0.5 Conditional Expression -92.08

[0248] Table 2-4 shows parameter relational expressions of the elements in the lens assembly provided in Example Two.

[0249] Value Figure 11 F#≤4.0 3.50 0.15 < TGA / EPD < 0.5 0.29 0.15 < TGO / EPD < 0.6 0.27 0.4 < |FGA / F| < 2.0 0.49 0.5 < | FGO / F | < 1.6 0.77 0.55 < DGA / F^2 x 1000 < 1.05 0.60 0.8 < |DGO / OA| < 1.5 1.00 0.4 < |FGC / F| < 5.0 1.92 0.7 < L / F < 1 0.79 1.5 < W / EPD < 3 1.65

[0250] In Example Two, referring to Table 2-1, the effective focal length F of the lens assembly is 47.96 mm, the F-number F# is 3.5, the field of view FOV is 8.4°, and the entrance pupil diameter EPD is 13.7 mm.

[0251] The optical filter 600, GP1, GP2, GA, GO, and GC can be made of glass or plastic, as shown in Table 1-1.

[0252] The object plane, S1 to S21, and the image plane SO are spherical or aspherical surfaces, and the aspherical coefficients can be calculated based on the aspherical curve equations of the foregoing embodiments.

[0253] Referring to Table 1-2, Table 1-2 presents aspherical coefficients of surfaces S4 to S11, S14 to S19 using aspherical types. Wherein, K is a conic coefficient in an aspherical curve equation, A4, A6, … A30 are aspherical coefficients of the 4th to 30th orders of each surface, respectively corresponding to a1, a2, … a30 in the aspherical curve equation. 13 .

[0254] Referring to Table 1-3, a focal length of the GA unit FGA = 23.4 mm, a total thickness of the GA unit TGA = 4.027 mm, a focusing moving stroke of the GA unit DGA = 1.376 mm, a focal length of the GO unit FGO = -37.1 mm, a total thickness of the GO unit TGO = 3.686 mm, a stabilization translation of the GO unit DGO = 0.499 mm, a stabilization angle OA = 0.5°, a focal length of the GC unit FGC = -92.08 mm.

[0255] Wherein, the total thickness of the GO unit TGO is a distance between the object side surface S4 of the lens L1 and the image side surface S7 of the lens L2, and the total thickness of the GA unit TGA is a distance between the object side surface S8 of the lens L3 and the image side surface S11 of the lens L4.

[0256] Referring to Table 1-4, Table 1-4 presents values of parameter relationships of each element in the lens assembly. Wherein, an aperture value F# of the lens assembly is 3.5; a relationship between the total thickness TGA of the focusing unit GA and the entrance pupil diameter EPD is TGA / EPD = 0.29; a relationship between the total thickness TGO of the stabilization unit GO and the entrance pupil diameter EPD is TGO / EPD = 0.27; a relationship between the focal length FGA of the focusing unit GA and the effective focal length F of the lens assembly is |FGA / F| = 0.49; a relationship between the focal length FGO of the stabilization unit GO and the effective focal length F of the lens assembly is |FGO / F| = 0.77; a relationship between the focusing moving stroke DGA of the focusing unit GA and the effective focal length F of the lens assembly is DGA / F^2 x 1000 = 0.6; a relationship between the stabilization angle OA and the stabilization stroke DGO of the stabilization unit GO is |DGO / OA| = 1; a relationship between the focal length FGC of the compensation unit GC and the effective focal length F of the lens assembly is |FGC / F| = 1.92; a relationship between the length L and the effective focal length F of the lens assembly is L / F = 0.79; and a relationship between the width W of the lens assembly and the entrance pupil diameter EPD is W / EPD = 1.65.

[0257] Figure 11 is a field curvature graph and a distortion graph of the lens assembly provided in Embodiment Two of the present application. Wherein, Figure 11 (a) in the above (a) is a field curvature graph of the lens assembly provided in Embodiment Two of the present application, Figure 11 the solid line in (a) in the above is a meridional field curvature, Figure 11 the dashed line in (a) in the above is a sagittal field curvature;Figure 11 (b) is a distortion diagram of the lens assembly provided in Embodiment 2 of this application.

[0258] Depend on Figure 11 As shown in the field curvature diagram (a), both the sagittal and meridional field curvatures are controlled within a small range, reflecting good control over the curvature of the imaging plane. Figure 12 As shown in the distortion diagram in Figure (b), the lens assembly provided in Embodiment 2 has less distortion, which means that the image deformation caused by the main beam is smaller and the imaging distortion effect is lower.

[0259] Therefore, the lens assembly provided in Embodiment 2 can achieve the goals of telephoto characteristics, miniaturization, compact structure and high image quality, while ensuring sufficient weight reduction of the focusing unit GA, the image stabilization unit GO and the compensation unit GC.

[0260] Example 3:

[0261] Figure 12 This is a schematic diagram of the lens assembly provided in Embodiment 3 of this application. The following refers to... Figure 12 The structure and performance of the lens assembly provided in Embodiment 3 of this application are described.

[0262] like Page Order As shown, the lens assembly, along the optical axis from the object side to the image side, includes a first optical path adjustment unit GP1, a focusing unit GA, an image stabilization unit GO, a second optical path adjustment unit GP2, and a compensation unit GC. An aperture stop is located at the front end of GP1, and a filter 600 is located on the image side of GC. The lens assembly provided in Embodiment 3 has a length L = 39.37 mm and a width W = 26.48 mm.

[0263] The object side has an object plane. The surface of the aperture stop is S1 (as shown in Table 3-1), and GP1 includes an object side surface S2 and an image side surface S3. The focusing unit GA includes three lenses, which are lenses L1, L2 and L3 respectively. Lens L1 includes an object side surface S4 and an image side surface S5; lens L2 includes an object side surface and an image side surface S6, and the object side surface of lens L2 is in contact with the image side surface S5 of lens L1; lens L3 includes an object side surface and an image side surface S7, and the object side surface of lens L3 is in contact with the image side surface S6 of lens L2. The anti-shake unit GO includes two lenses, which are lenses L4 and L5 respectively. Lens L4 includes an object side surface S8 and an image side surface S9; lens L5 includes an object side surface S10 and an image side surface S11. GP2 includes an object side surface S12 and an image side surface S13. The compensation unit GC includes two groups, and each group GC includes two lenses, which are lenses L6, L7, L8 and L9 respectively, lenses L6 and L7 are in contact, lenses L8 and L9 are in contact, and there is a gap between lenses L7 and L8. Lens L6 includes an object side surface S14 and an image side surface S15; lens L7 includes an object side surface and an image side surface S16, and the object side surface of lens L7 is in contact with the image side surface S15 of lens L6. Lens L8 includes an object side surface S17 and an image side surface S18; lens L9 includes an object side surface and an image side surface S19, and the object side surface of lens L9 is in contact with the image side surface S18 of lens L8. The filter 600 includes an object side surface S20 and an image side surface S21. The image side has an image plane S0.

[0264] The object side surface S2 of GP1 is convex at the optical axis, and the image side surface S3 is flat at the circumference. In GA, the object side surface S4 of lens L1 is flat at the circumference, and the image side surface S5 is convex at the optical axis. The object side surface of lens L2 is concave at the optical axis, and the image side surface S6 is concave at the optical axis. The object side surface of lens L3 is convex at the optical axis, and the image side surface S7 is concave at the optical axis. In GO, the object side surface S8 of lens L4 is convex at the optical axis, and the image side surface S9 is concave at the optical axis. The object side surface S10 of lens L5 is convex at the optical axis, and the image side surface S11 is concave at the optical axis. The object side surface S12 and the image side surface S13 of GP2 are flat at the circumference. In GC, the object side surface S14 of lens L6 is concave at the optical axis, and the image side surface S15 is convex at the optical axis. The object side surface of lens L7 is concave at the optical axis, and the image side surface S16 is concave at the optical axis. The object side surface of lens L8 is convex at the optical axis, and the image side surface S18 is convex at the optical axis. The object side surface of lens L9 is concave at the optical axis, and the image side surface S19 is convex at the optical axis.

[0265] Table 3-1 shows the optical parameters of the lens assembly provided in Example Three; Table 3-2 shows the aspheric surface coefficients of the lens assembly provided in Example Three; Table 3-3 shows the related data of the GA unit and the GO unit in the lens assembly provided in Example Three; and Table 3-4 shows the parameter relationship formula of each element in the lens assembly provided in Example Three.

[0266] In some embodiments, the lens assembly can be configured with the optical parameters of the elements in the lens assembly according to the data shown in Table 3-1, Table 3-2, Table 3-3 and Table 3-4.

[0267] Table 3-1 Optical parameters of the lens assembly provided in Example Three

[0268]

[0269]

[0270] Table 3-2 Asphericity coefficients of the lens assembly provided in Example Three

[0271] Parameter Name S2 S8 S9 S10 S11 K 0 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 A4 -0.008513919 -3.340691E-01 -7.284926E-01 -7.588717E-02 -8.847546E-02 A6 -0.00011916 2.450788E-02 -6.898045E-02 -2.421230E-02 -2.234626E-02 A8 -9.50E-06 -1.117691E-04 -1.081194E-02 4.344637E-03 -2.866023E-03 A10 4.98E-06 -1.279808E-03 -6.244622E-03 -4.951497E-04 -7.442241E-04 A12 -1.78E-06 1.577839E-03 3.089597E-03 3.229731E-03 2.511705E-04 A14 -1.006817E-03 -1.365295E-03 8.022628E-05 -5.732398E-05 A16 6.705270E-04 1.553614E-03 1.246184E-03 1.343708E-04 A18 -5.585508E-04 -7.707246E-04 -1.577068E-04 -5.124727E-05 A20 1.476232E-04 2.143399E-05 -1.882543E-05 -2.983585E-06 A22 A24 A26 A28 A30

[0272] Table 3-3 Related data of the GA unit and the GO unit in the lens assembly provided in Example Three

[0273] Parameter Value FGA (GA unit focal length, mm) TGA (GA unit thickness, mm) -62.67 DGA (AF travel, mm) 5.087 FGO (GO unit focal length, mm) 2.400 TGO (GO unit thickness, mm) 52.08 DGO (OIS translation, mm) 5.087 OA (OIS angle, °) 0.649 FGC (GC unit focal length, mm) 0.5 Conditional Expression -39.61

[0274] Table 3-4 Parameter relationship of the elements in the lens assembly provided in Example Three

[0275] Value Figure 13 F#≤4.0 3.50 0.15 < TGA / EPD < 0.5 0.37 0.15 < TGO / EPD < 0.6 0.37 0.4 < |FGA / F| < 2.0 1.31 0.5 < | FGO / F | < 1.6 1.08 0.55 < DGA / F^2 x 1000 < 1.05 1.04 0.8 < |DGO / OA| < 1.5 1.30 0.4 < |FGC / F| < 5.0 0.83 0.7 < L / F < 1 0.82 1.5 < W / EPD < 3 1.93

[0276] In Example Three, referring to Table 3-1, the effective focal length F of the lens assembly is 48.01 mm, the F number F# is 3.5, the field of view FOV is 8.3°, and the entrance pupil diameter EPD is 13.72 mm.

[0277] The filter 600, GP1, GP2, GA, GO and GC can be made of glass or plastic, as shown in Table 1-1.

[0278] The object plane, S1 to S21, and the image plane are spherical or aspherical surfaces, wherein the asphericity coefficients can be calculated based on the asphericity curve equation of the foregoing embodiments.

[0279] Referring to Table 1-2, Table 1-2 presents the asphericity coefficients of the aspherical surfaces S2, S8 to S11. Wherein, K is the conic coefficient in the asphericity curve equation, A4, A6, … A30 are the 4th to 30th order asphericity coefficients of each surface, which correspond to a1, a2, … a30 in the asphericity curve equation respectively. 13 .

[0280] Referring to Table 1-3, the focal length of the GA unit is FGA = -62.67mm, the total thickness of the GA unit is TGA = 5.087mm, the focus travel distance of the GA unit is DGA = 2.4mm, the focal length of the GO unit is FGO = 52.08mm, the total thickness of the GO unit is TGO = 5.087mm, the image stabilization translation amount of the GO unit is DGO = 0.649mm, the image stabilization angle is OA = 0.5°, and the focal length of the GC unit is FGC = -39.61mm.

[0281] Wherein, the total thickness TGA of the GA unit is the distance between the object side surface S4 of lens L1 and the image side surface S7 of lens L3, and the total thickness TGO of the GO unit is the distance between the object side surface S8 of lens L4 and the image side surface S11 of lens L5.

[0282] Refer to Table 1-4, which presents the parameter relationships of each component in the lens assembly. Specifically, the aperture value of the lens assembly is F# 3.5; the relationship between the total thickness TGA of the focusing unit GA and the entrance pupil diameter EPD is TGA / EPD = 0.37; the relationship between the total thickness TGO of the image stabilization unit GO and the entrance pupil diameter EPD is TGO / EPD = 0.37; the relationship between the focal length FGA of the focusing unit GA and the effective focal length F of the lens assembly is |FGA / F| = 1.31; the relationship between the focal length FGO of the image stabilization unit GO and the effective focal length F of the lens assembly is |FGO / F| = 1.08; the focusing unit G... The relationship between the focus travel distance DGA of A and the effective focal length F of the lens assembly is DGA / F^2×1000=1.04; the relationship between the stabilization angle OA of the image stabilization unit GO and the stabilization travel DGO is |DGO / OA|=1.3; the relationship between the focal length FGC of the compensation unit GC and the effective focal length F of the lens assembly is |FGC / F|=0.82; the relationship between the length L of the lens assembly and the effective focal length F is L / F=0.77; the relationship between the width W of the lens assembly and the entrance pupil diameter EPD is W / EPD=1.93.

[0283] Figure 13 These are the field curvature and distortion diagrams of the lens assembly provided in Embodiment 3 of this application. Among them, Figure 13 (a) is a field curvature diagram of the lens assembly provided in Embodiment 3 of this application. Figure 13 The solid line in (a) represents the meridional curve. Figure 13 The dashed line in (a) represents the sagittal field curve; Figure 13 (b) is a distortion diagram of the lens assembly provided in Embodiment 3 of this application.

[0284] Depend on Figure 13 As shown in the field curvature diagram (a), both the sagittal and meridional field curvatures are controlled within a small range, reflecting good control over the curvature of the imaging plane. Figure 14As shown in the distortion diagram in Figure (b), the lens assembly provided in Embodiment 3 has less distortion, which means that the image deformation caused by the main beam is smaller and the imaging distortion effect is lower.

[0285] Therefore, the lens assembly provided in Embodiment 3 can achieve the goals of telephoto characteristics, miniaturization, compact structure and high image quality, while ensuring sufficient weight reduction of the focusing unit GA, the image stabilization unit GO and the compensation unit GC.

[0286] Example 4:

[0287] Figure 14 This is a schematic diagram of the lens assembly provided in Embodiment 4 of this application. The following refers to... Figure 14 The structure and performance of the lens assembly provided in Embodiment 4 of this application are described.

[0288] like Parameter Name As shown, the lens assembly, along the optical axis from the object side to the image side, includes a first optical path adjustment unit GP1, an image stabilization unit GO, a compensation unit GC, a second optical path adjustment unit GP2, and a focusing unit GA. An aperture stop is located at the front end of GP1, and a filter 600 is located on the image side of GC. The lens assembly provided in Embodiment 4 has a length L = 43.16 mm and a width W = 22.74 mm.

[0289] The object side has an object surface. The surface of the aperture stop is S1 (as shown in Table 4-1), and GP1 includes an object-side surface S2 and an image-side surface S3. The image stabilization unit GO includes two lenses, namely lenses L1 and L2. Lens L1 includes an object-side surface S4 and an image-side surface S5; lens L2 includes an object-side surface S6 and an image-side surface S7. The compensation unit GC includes two lenses, namely lenses L3 and L4. Lens L3 includes an object-side surface S8 and an image-side surface S9; lens L4 includes an object-side surface S10 and an image-side surface S11. GP2 includes an object-side surface S12 and an image-side surface S13. The focusing unit GA includes four lenses, namely lenses L5, L6, L7, and L8. Lens L5 includes an object-side surface S14 and an image-side surface S15; lens L6 includes an object-side surface and an image-side surface S16, and the object-side surface of lens L6 is in contact with the image-side surface S15 of lens L5. Lens L7 includes an object-side surface and an image-side surface S17, with the object-side surface of lens L7 fitting against the image-side surface S16 of lens L6. Lens L8 includes an object-side surface S18 and an image-side surface S19. Filter 600 includes an object-side surface S20 and an image-side surface S21. The image-side surface has an image plane S0.

[0290] The object side surface S2 of the GP1 is convex at the optical axis, and the image side surface S3 is concave at the optical axis. In the GO, the object side surface S4 of the lens L1 is convex at the optical axis, and the image side surface S5 is convex at the optical axis. The object side surface S6 of the lens L2 is concave at the optical axis, and the image side surface S7 is concave at the optical axis. In the GC, the object side surface S8 of the lens L3 is convex at the optical axis, and the image side surface S9 is concave at the optical axis. The object side surface S10 of the lens L4 is convex at the optical axis, and the image side surface S11 is convex at the optical axis. The object side surface S12 and the image side surface S13 of the GP2 are planar at the circumference. In the GA, the object side surface S14 of the lens L5 is concave at the optical axis, and the image side surface S15 is convex at the optical axis. The object side surface of the lens L6 is concave at the optical axis, and the image side surface S16 is convex at the optical axis. The object side surface of the lens L7 is concave at the optical axis, and the image side surface S17 is convex at the optical axis. The object side surface S18 of the lens L8 is concave at the optical axis, and the image side surface S19 is convex at the optical axis.

[0291] Table 4-1 shows the optical parameters of the lens assembly provided in Example Four; Table 4-2 shows the aspherical coefficients of the lens assembly provided in Example Four; Table 4-3 shows the relevant data of the GA unit and the GO unit in the lens assembly provided in Example Four; and Table 4-4 shows the parameter relational expressions of the elements in the lens assembly provided in Example Four.

[0292] In some embodiments, the lens assembly can be configured according to the data shown in Tables 4-1, 4-2, 4-3 and 4-4.

[0293] Table 4-1 shows the optical parameters of the lens assembly provided in Example Four; Table 4-2 shows the aspherical coefficients of the lens assembly provided in Example Four; Table 4-3 shows the relevant data of the GA unit and the GO unit in the lens assembly provided in Example Four; and Table 4-4 shows the parameter relational expressions of the elements in the lens assembly provided in Example Four.

[0294]

[0295] Table 4-2 shows the aspherical coefficients of the lens assembly provided in Example Four; Table 4-3 shows the relevant data of the GA unit and the GO unit in the lens assembly provided in Example Four; and Table 4-4 shows the parameter relational expressions of the elements in the lens assembly provided in Example Four.

[0296]

[0297]

[0298] Table 4-3 shows the relevant data of the GA unit and the GO unit in the lens assembly provided in Example Four; and Table 4-4 shows the parameter relational expressions of the elements in the lens assembly provided in Example Four.

[0299] Parameter Value FGA (GA unit focal length, mm) TGA (GA unit thickness, mm) -28.79 DGA (AF travel, mm) 5.020 FGO (GO unit focal length, mm) 2.400 TGO (GO unit thickness, mm) -37.33 DGO (OIS translation, mm) 3.879 OA (OIS angle, °) 0.474 FGC (GC unit focal length, mm) 0.5 Figure 15 20.21

[0300] Table 4-4 shows the parameter relational expressions of the elements in the lens assembly provided in Example Four.

[0301]

[0302]

[0303] In embodiment four, referring to Table 4-1, the effective focal length of the lens assembly is F = 47.95 mm, the F-number is F# = 3.5, the field of view is FOV = 8.4°, and the entrance pupil diameter is EPD = 13.7 mm.

[0304] The filter 600, GP1, GP2, GA, GO, and GC can be made of glass or plastic, as shown in Table 1-1.

[0305] The surface types of the object plane S1 to S21 and the image plane are spherical or aspherical, wherein the aspherical coefficients can be calculated based on the aspherical curve equation of the aforementioned embodiments.

[0306] Referring to Table 1-2, the aspherical coefficients of the surfaces S4 to S11 and S14 to S19 using aspherical type are presented. Wherein K is the conic coefficient in the aspherical curve equation, A4, A6, … A30 are the aspherical coefficients of the 4th to 30th order of each surface, which correspond to a1, a2, … a30 in the aspherical curve equation respectively. 13 .

[0307] Referring to Table 1-3, the focal length of the GA unit is FGA = -28.79 mm, the total thickness of the GA unit is TGA = 5.02 mm, the focusing moving stroke of the GA unit is DGA = 2.4 mm, the focal length of the GO unit is FGO = -37.33 mm, the total thickness of the GO unit is TGO = 3.879 mm, the anti-shake translation of the GO unit is DGO = 0.474 mm, the anti-shake angle is OA = 0.5°, and the focal length of the GC unit is FGC = 20.21 mm.

[0308] Wherein the total thickness of the GA unit TGA is the distance between the object side S14 of the lens L5 and the image side S19 of the lens L8, and the total thickness of the GO unit TGO is the distance between the object side S4 of the lens L1 and the image side S7 of the lens L2.

[0309] Refer to Table 1-4, which presents the parameter relationships of each component in the lens assembly. Specifically, the aperture value of the lens assembly is F# 3.5; the relationship between the total thickness TGA of the focusing unit GA and the entrance pupil diameter EPD is TGA / EPD = 0.37; the relationship between the total thickness TGO of the image stabilization unit GO and the entrance pupil diameter EPD is TGO / EPD = 0.28; the relationship between the focal length FGA of the focusing unit GA and the effective focal length F of the lens assembly is |FGA / F| = 0.6; the relationship between the focal length FGO of the image stabilization unit GO and the effective focal length F of the lens assembly is |FGO / F| = 0.78; the focusing unit GA... The relationship between the focusing travel distance DGA and the effective focal length F of the lens assembly is DGA / F^2×1000=1.04; the relationship between the stabilization angle OA of the image stabilization unit GO and the stabilization travel distance DGO is |DGO / OA|=0.95; the relationship between the focal length FGC of the compensation unit GC and the effective focal length F of the lens assembly is |FGC / F|=0.42; the relationship between the length L of the lens assembly and the effective focal length F is L / F=0.9; the relationship between the width W of the lens assembly and the entrance pupil diameter EPD is W / EPD=1.66.

[0310] Figure 15 These are the field curvature and distortion diagrams of the lens assembly provided in Embodiment 4 of this application. Among them, Figure 15 (a) is a field curvature diagram of the lens assembly provided in Embodiment 4 of this application. Figure 15 The solid line in (a) represents the meridional curve. Figure 15 The dashed line in (a) represents the sagittal field curve; Figure 15 (b) is a distortion diagram of the lens assembly provided in Embodiment 4 of this application.

[0311] Depend on Figure 15 As shown in the field curvature diagram (a), both the sagittal and meridional field curvatures are controlled within a small range, reflecting good control over the curvature of the imaging plane. Figure 16 As shown in the distortion diagram in Figure (b), the lens assembly provided in Embodiment 4 has less distortion, which means that the image deformation caused by the main beam is smaller and the imaging distortion effect is lower.

[0312] Therefore, the lens assembly provided in Embodiment 4 can achieve the goals of telephoto characteristics, miniaturization, compact structure and high image quality, while ensuring sufficient weight reduction of the focusing unit GA, the image stabilization unit GO and the compensation unit GC.

[0313] Example 5:

[0314] Figure 16 This is a schematic diagram of the lens assembly provided in Embodiment 5 of this application. The following refers to... Figure 16 The structure and performance of the lens assembly provided in Embodiment 5 of this application are described.

[0315] likePage Order As shown, the lens assembly includes, along the optical axis from the object side to the image side, a first optical path adjusting unit GP1, a focusing unit GA, an anti-shake unit GO, a second optical path adjusting unit GP2, and a compensation unit GC. The aperture stop is disposed at the front end of GP1, and the optical filter 600 is disposed on the image side of GC. The lens assembly provided in Embodiment Five has a length L = 42.22 mm and a width W = 24.13 mm.

[0316] The object side has an object plane. The surface of the aperture stop is S1 (as shown in Table 5-1), and GP1 includes an object side surface S2 and an image side surface S3. The focusing unit GA includes two lenses, namely lenses L1 and L2. Lens L1 includes an object side surface S4 and an image side surface S5; lens L2 includes an object side surface S6 and an image side surface S7. The anti-shake unit GO includes two lenses, namely lenses L3 and L4. Lens L3 includes an object side surface S8 and an image side surface S9; lens L4 includes an object side surface and an image side surface S10. GP2 includes an object side surface S11 and an image side surface S12. The compensation unit GC includes two lenses, namely lenses L5 and L6. Lens L5 includes an object side surface S13 and an image side surface S14; lens L6 includes an object side surface and an image side surface S15, and the object side surface of lens L6 is in contact with the image side surface S14 of lens L5. The optical filter 600 includes an object side surface S16 and an image side surface S17. The image side has an image plane S0.

[0317] The object side surface S2 of GP1 is convex at the optical axis, and the image side surface S3 is planar at the circumference. In GA, the object side surface S4 of lens L1 is planar at the circumference, and the image side surface S5 is concave at the optical axis. The object side surface S6 of lens L2 is convex at the optical axis, and the image side surface S7 is concave at the optical axis. In GO, the object side surface S8 of lens L3 is convex at the optical axis, and the image side surface S9 is concave at the optical axis. The object side surface of lens L4 is convex at the optical axis, and the image side surface S10 is convex at the optical axis. The object side surface S11 and the image side surface S12 of GP2 are planar at the circumference. In GC, the object side surface S13 of lens L5 is concave at the optical axis, and the image side surface S14 is concave at the optical axis. The object side surface of lens L6 is convex at the optical axis, and the image side surface S15 is planar at the circumference.

[0318] Table 5-1 shows the optical parameters of the lens assembly provided in Embodiment Five; Table 5-2 shows the aspheric coefficients of the lens assembly provided in Embodiment Five; Table 5-3 shows the relevant data of the GA unit and the GO unit in the lens assembly provided in Embodiment Five; and Table 5-4 shows the parameter relationship of each element in the lens assembly provided in Embodiment Five.

[0319] In some embodiments, the optical parameters of each element in the lens assembly can be set according to the data shown in Table 5-1, Table 5-2, Table 5-3, and Table 5-4.

[0320] Table 5-1 Optical parameters of the lens assembly provided in Example Five

[0321]

[0322]

[0323] Table 5-2 Aspherical coefficients of the lens assembly provided in Example Five

[0324] Conditional Expression S2 S4 S5 S6 S7 K 0 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 A4 -0.003354028 -1.292693E-01 -1.921188E-01 -3.128533E-02 -1.450476E-02 A6 -5.34E-05 2.679223E-02 2.212206E-02 -1.162212E-02 -1.250223E-02 A8 1.69E-05 -8.773124E-03 -8.038206E-03 -7.626631E-05 -2.435483E-04 A10 -5.92E-06 3.687746E-03 3.840314E-03 -1.212186E-03 -1.742891E-03 A12 2.23E-06 -1.428287E-03 -1.164662E-03 -1.108635E-04 -1.872388E-04 A14 8.110442E-04 1.009397E-03 -2.284817E-04 -4.726177E-04 A16 -3.841688E-04 -3.787623E-04 -1.235412E-04 -8.759315E-05 A18 3.231017E-04 3.929468E-04 -1.631783E-04 -2.457555E-04 A20 1.291009E-06 7.225983E-04 5.499001E-04 -1.983218E-05 A22 A24 A26 A28 A30

[0325] Table 5-3 Relevant data of the GA unit and the GO unit in the lens assembly provided in Example Five

[0326]

[0327]

[0328] Table 5-4 Parameter relationship of each element in the lens assembly provided in Example Five

[0329] Value Figure 17 F#≤4.0 3.50 0.15 < TGA / EPD < 0.5 0.19 0.15 < TGO / EPD < 0.6 0.31 0.4 < |FGA / F| < 2.0 0.91 0.5 < | FGO / F | < 1.6 0.89 0.55 < DGA / F^2 x 1000 < 1.05 0.64 0.8 < |DGO / OA| < 1.5 1.00 0.4 < |FGC / F| < 5.0 1.90 0.7 < L / F < 1 0.88 1.5 < W / EPD < 3 1.76

[0330] In Example Five, referring to Table 5-1, the effective focal length F of the lens assembly is 47.98 mm, the F-number F# is 3.5, the field of view FOV is 8.3°, and the entrance pupil diameter EPD is 13.71 mm.

[0331] The filter 600, GP1, GP2, GA, GO, and GC can be made of glass or plastic, as shown in Table 1-1.

[0332] The object plane, S1 to S17, and the image plane are spherical or aspherical surfaces, wherein the aspherical coefficients can be calculated based on the aspherical curve equation of the foregoing embodiments.

[0333] Referring to Table 1-2, Table 1-2 presents the aspherical coefficients of the aspherical surfaces S2, S4 to S10. Wherein, K is the conic coefficient in the aspherical curve equation, A4, A6, … A30 are the 4th to 30th order aspherical coefficients of each surface, which correspond to a1, a2, … a30 in the aspherical curve equation respectively. 13 .

[0334] Referring to Table 1-3, the focal length of the GA unit FGA is 43.57 mm, the total thickness of the GA unit TGA is 2.652 mm, the focusing moving stroke of the GA unit DGA is 1.47 mm, the focal length of the GO unit FGO is -42.62 mm, the total thickness of the GO unit TGO is 4.209 mm, the anti-shake translation of the GO unit DGO is -0.498 mm, the anti-shake angle OA is 0.5°, and the focal length of the GC unit FGC is -91.08 mm.

[0335] Wherein, the total thickness TGA of the GA unit is the distance between the object side surface S4 of lens L1 and the image side surface S7 of lens L2, and the total thickness TGO of the GO unit is the distance between the object side surface S8 of lens L3 and the image side surface S10 of lens L4.

[0336] Refer to Table 1-4, which presents the parameter relationships of each component in the lens assembly. Specifically, the aperture value of the lens assembly is F# 3.5; the relationship between the total thickness TGA of the focusing unit GA and the entrance pupil diameter EPD is TGA / EPD = 0.19; the relationship between the total thickness TGO of the image stabilization unit GO and the entrance pupil diameter EPD is TGO / EPD = 0.31; the relationship between the focal length FGA of the focusing unit GA and the effective focal length F of the lens assembly is |FGA / F| = 0.91; the relationship between the focal length FGO of the image stabilization unit GO and the effective focal length F of the lens assembly is |FGO / F| = 0.89; the focusing unit... The relationship between the focusing travel distance DGA of GA and the effective focal length F of the lens assembly is DGA / F^2×1000=0.64; the relationship between the stabilization angle OA of the image stabilization unit GO and the stabilization travel distance DGO is |DGO / OA|=1; the relationship between the focal length FGC of the compensation unit GC and the effective focal length F of the lens assembly is |FGC / F|=1.9; the relationship between the length L of the lens assembly and the effective focal length F is L / F=0.88; the relationship between the width W of the lens assembly and the entrance pupil diameter EPD is W / EPD=1.76.

[0337] Figure 17 These are the field curvature and distortion diagrams of the lens assembly provided in Embodiment 5 of this application. Among them, Figure 17 (a) is a field curvature diagram of the lens assembly provided in Embodiment 5 of this application. Figure 17 The solid line in (a) represents the meridional curve. Figure 17 The dashed line in (a) represents the sagittal field curve; Figure 17 (b) is a distortion diagram of the lens assembly provided in Embodiment 5 of this application.

[0338] Depend on Figure 17 As shown in the field curvature diagram (a), both the sagittal and meridional field curvatures are controlled within a small range, reflecting good control over the curvature of the imaging plane. Figure 18 As shown in the distortion diagram in Figure (b), the lens assembly provided in Embodiment 5 has less distortion, which means that the image deformation caused by the main beam is smaller and the imaging distortion effect is lower.

[0339] Therefore, the lens assembly provided in Embodiment 5 can achieve the goals of telephoto characteristics, miniaturization, compact structure and high image quality, while ensuring sufficient weight reduction of the focusing unit GA, the image stabilization unit GO and the compensation unit GC.

[0340] Example 6:

[0341] Figure 18 This is a schematic diagram of the lens assembly provided in Embodiment Six of this application. The following refers to... Figure 18 The structure and performance of the lens assembly provided in Embodiment Six of this application are described.

[0342] like Parameter Name As shown, the lens assembly, along the optical axis from the object side to the image side, includes a first optical path adjustment unit GP1, a focusing unit GA, an image stabilization unit GO, a second optical path adjustment unit GP2, and a compensation unit GC. An aperture stop is located at the front end of GP1, and a filter 600 is located on the image side of GC. The lens assembly provided in Embodiment Six has a length L = 39.85 mm and a width W = 27.17 mm.

[0343] The object side has an object plane. The surface of the aperture stop is S1 (as shown in Table 6-1), and GP1 includes an object-side surface S2 and an image-side surface S3. The focusing unit GA includes three lenses, namely lenses L1, L2, and L3. Lens L1 includes an object-side surface S4 and an image-side surface S5; lens L2 includes an object-side surface and an image-side surface S6, with the object-side surface of lens L2 fitting against the image-side surface S5 of lens L1; lens L3 includes an object-side surface and an image-side surface S7, with the object-side surface of lens L3 fitting against the image-side surface S6 of lens L2. The image stabilization unit GO includes two lenses, namely lenses L4 and L5. Lens L4 includes an object-side surface S8 and an image-side surface S9; lens L5 includes an object-side surface S10 and an image-side surface S11. GP2 includes an object-side surface S12 and an image-side surface S13. The compensation unit GC includes two lenses, namely lenses L6 and L7. Lens L6 includes an object-side surface S14 and an image-side surface S15; lens L7 includes an object-side surface S16 and an image-side surface S17. The filter 600 includes an object-side surface S18 and an image-side surface S19. The image-side surface has an image plane S0.

[0344] In GP1, the object-side surface S2 is convex along the optical axis, and the image-side surface S3 is flat along the circumference. In GA, the object-side surface S4 of lens L1 is flat along the circumference, and the image-side surface S5 is convex along the optical axis. The object-side surface of lens L2 is concave along the optical axis, and the image-side surface S6 is concave along the optical axis. The object-side surface of lens L3 is convex along the optical axis, and the image-side surface S7 is concave along the optical axis. In GO, the object-side surface S8 of lens L4 is convex along the optical axis, and the image-side surface S9 is concave along the optical axis. The object-side surface S10 of lens L5 is convex along the optical axis, and the image-side surface S11 is concave along the optical axis. The object-side surface S11 and the image-side surface S12 of GP2 are flat along the circumference. In GC, the object-side surface S13 of lens L6 is flat along the circumference, and the image-side surface S14 is convex along the optical axis. The object-side surface S15 of lens L7 is concave at the optical axis, and the image-side surface S16 is concave at the optical axis.

[0345] Table 6-1 shows the optical parameters of the lens assembly provided in Embodiment 6; Table 6-2 shows the aspherical coefficient of the lens assembly provided in Embodiment 6; Table 6-3 shows the relevant data of the GA unit and GO unit in the lens assembly provided in Embodiment 6; Table 6-4 shows the parameter relationships of each element in the lens assembly provided in Embodiment 6.

[0346] In some embodiments, the optical parameters of each element in the lens assembly can be set according to the data shown in Tables 6-1, 6-2, 6-3 and 6-4.

[0347] Table 6-1 Optical parameters of the lens assembly provided in Example 6

[0348]

[0349]

[0350] Table 6-2 Aspheric coefficients of the lens assembly provided in Example 6

[0351]

[0352]

[0353] Table 6-3 Relevant data of the GA and GO units in the lens assembly provided in Example 6

[0354] Parameter Value FGA (GA unit focal length, mm) TGA (GA unit thickness, mm) -72.29 DGA (AF travel, mm) 4.688 FGO (GO unit focal length, mm) 2.400 TGO (GO unit thickness, mm) 54.39 DGO (OIS translation, mm) 5.109 OA (OIS angle, °) 0.626 FGC (GC unit focal length, mm) 0.5 Conditional Expression -35.18

[0355] Table 6-4 shows the parameter relationships of each component in the lens assembly provided in Example 6.

[0356] Value Figure 19 F#≤4.0 3.50 0.15 < TGA / EPD < 0.5 0.34 0.15 < TGO / EPD < 0.6 0.37 0.4 < |FGA / F| < 2.0 1.51 0.5 < | FGO / F | < 1.6 1.13 0.55 < DGA / F^2 x 1000 < 1.05 1.04 0.8 < |DGO / OA| < 1.5 1.25 0.4 < |FGC / F| < 5.0 0.73 0.7 < L / F < 1 0.83 1.5 < W / EPD < 3 1.98

[0357] In Example 6, referring to Table 6-1, the effective focal length of the lens assembly is F = 48.01 mm, the aperture number is F# = 3.5, the field of view (FOV) is 8.3°, and the entrance pupil diameter (EPD) is 13.72 mm.

[0358] Filters 600, GP1, GP2, GA, GO and GC can be made of glass or plastic, as shown in Table 1-1.

[0359] The object surface, S1 to S19, and the image surface are of spherical or aspherical type, wherein the aspherical coefficient can be calculated based on the aspherical curve equation of the foregoing embodiment.

[0360] Refer to Table 1-2, which presents the aspherical coefficients of surfaces S2, S8 to S11 using aspherical types. Here, K is the conical coefficient in the aspherical curve equation, and A4, A6, ... A30 are the 4th to 30th order aspherical coefficients of each surface, corresponding to a1, a2, ... a30 in the aspherical curve equation, respectively. 13 .

[0361] Referring to Table 1-3, the focal length of the GA unit is FGA = -72.29mm, the total thickness of the GA unit is TGA = 4.688mm, the focus travel distance of the GA unit is DGA = 2.4mm, the focal length of the GO unit is FGO = 54.39mm, the total thickness of the GO unit is TGO = 5.109mm, the image stabilization translation amount of the GO unit is DGO = 0.626mm, the image stabilization angle is OA = 0.5°, and the focal length of the GC unit is FGC = -35.18mm.

[0362] Wherein, the total thickness TGA of the GA unit is the distance between the object side surface S4 of lens L1 and the image side surface S7 of lens L3, and the total thickness TGO of the GO unit is the distance between the object side surface S8 of lens L4 and the image side surface S11 of lens L5.

[0363] Refer to Table 1-4, which presents the parameter relationships of each component in the lens assembly. Specifically, the aperture value of the lens assembly is F# 3.5; the relationship between the total thickness TGA of the focusing unit GA and the entrance pupil diameter EPD is TGA / EPD = 0.34; the relationship between the total thickness TGO of the image stabilization unit GO and the entrance pupil diameter EPD is TGO / EPD = 0.37; the relationship between the focal length FGA of the focusing unit GA and the effective focal length F of the lens assembly is |FGA / F| = 1.51; the relationship between the focal length FGO of the image stabilization unit GO and the effective focal length F of the lens assembly is |FGO / F| = 1.13; the focusing unit GA... The relationship between the focusing travel distance DGA and the effective focal length F of the lens assembly is DGA / F^2×1000=1.04; the relationship between the stabilization angle OA of the image stabilization unit GO and the stabilization travel distance DGO is |DGO / OA|=1.25; the relationship between the focal length FGC of the compensation unit GC and the effective focal length F of the lens assembly is |FGC / F|=0.73; the relationship between the length L of the lens assembly and the effective focal length F is L / F=0.83; the relationship between the width W of the lens assembly and the entrance pupil diameter EPD is W / EPD=1.98.

[0364] Figure 19 These are the field curvature and distortion diagrams of the lens assembly provided in Embodiment Six of this application. Among them, Figure 19 (a) is a field curvature diagram of the lens assembly provided in Embodiment Six of this application. Figure 19 The solid line in (a) represents the meridional curve. Figure 19 The dashed line in (a) represents the sagittal field curve;Figure 19 (b) is a distortion diagram of the lens assembly provided in Embodiment Six of this application.

[0365] Depend on Figure 19 As shown in the field curvature diagram (a), both the sagittal and meridional field curvatures are controlled within a small range, reflecting good control over the curvature of the imaging plane. Figure 20 As shown in the distortion diagram in Figure (b), the lens assembly provided in Example 6 has less distortion, which means that the image deformation caused by the main beam is smaller and the imaging distortion effect is lower.

[0366] Therefore, the lens assembly provided in Embodiment Six can achieve the goals of telephoto characteristics, miniaturization, compact structure and high image quality, while ensuring sufficient weight reduction of the focusing unit GA, the image stabilization unit GO and the compensation unit GC.

[0367] Example 7:

[0368] Figure 20 This is a schematic diagram of the lens assembly provided in Embodiment Seven of this application. The following refers to... Figure 20 The structure and performance of the lens assembly provided in Embodiment 7 of this application are described.

[0369] like Page Order As shown, the lens assembly, along the optical axis from the object side to the image side, includes a first optical path adjustment unit GP1, a focusing unit GA, an image stabilization unit GO, a second optical path adjustment unit GP2, and a compensation unit GC. An aperture stop is located at the front end of GP1, and a filter 600 is located on the image side of GC. The lens assembly provided in Embodiment 7 has a length L = 40.73 mm and a width W = 32.95 mm.

[0370] The object side has an object plane. The surface of the aperture stop is S1 (as shown in Table 7-1), and GP1 includes an object-side surface S2 and an image-side surface S3. The focusing unit GA includes two lenses, namely lenses L1 and L2. Lens L1 includes an object-side surface S4 and an image-side surface S5; lens L2 includes an object-side surface and an image-side surface S6, and the object-side surface of lens L2 is in contact with the image-side surface S5 of lens L1. The image stabilization unit GO includes two lenses, namely lenses L3 and L4. Lens L3 includes an object-side surface S7 and an image-side surface S8; lens L4 includes an object-side surface S9 and an image-side surface S10. GP2 includes an object-side surface S11 and an image-side surface S12. The compensation unit GC includes two groups, each GC including two lenses, namely lenses L5, L6, L7 and L8, lenses L5 and L6 are in contact, lenses L7 and L8 are in contact, and there is a gap between lenses L6 and L7. Lens L5 includes an object-side surface S13 and an image-side surface S14; lens L6 includes an object-side surface and an image-side surface S15, with the object-side surface of lens L6 fitting against the image-side surface S14 of lens L5. Lens L7 includes an object-side surface S16 and an image-side surface S17; lens L8 includes an object-side surface and an image-side surface S18, with the object-side surface of lens L8 fitting against the image-side surface S17 of lens L7. Filter 600 includes an object-side surface S19 and an image-side surface S20. The image-side surface has an image plane.

[0371] In GP1, the object-side surface S2 is convex along the optical axis, and the image-side surface S3 is flat along the circumference. In GA, the object-side surface S4 of lens L1 is convex along the optical axis, and the image-side surface S5 is concave along the optical axis. The object-side surface of lens L2 is convex along the optical axis, and the image-side surface S6 is concave along the optical axis. In GO, the object-side surface S7 of lens L3 is flat along the circumference, and the image-side surface S8 is convex along the optical axis. The object-side surface S9 of lens L4 is concave along the optical axis, and the image-side surface S10 is concave along the optical axis. The object-side surface S11 and the image-side surface S12 of GP2 are flat along the circumference. In GC, the object-side surface S13 of lens L5 is convex along the optical axis, and the image-side surface S13 is convex along the optical axis. The object-side surface of lens L6 is concave along the optical axis, and the image-side surface S14 is convex along the optical axis. The object-side surface S15 of lens L7 is concave at the optical axis, and the image-side surface S16 is convex at the optical axis. The object-side surface of lens L8 is concave at the optical axis, and the image-side surface S18 is concave at the optical axis.

[0372] Table 7-1 shows the optical parameters of the lens assembly provided in Embodiment 7; Table 7-2 shows the aspherical coefficient of the lens assembly provided in Embodiment 7; Table 7-3 shows the relevant data of the GA unit and GO unit in the lens assembly provided in Embodiment 7; Table 7-4 shows the parameter relationships of each element in the lens assembly provided in Embodiment 7.

[0373] In some embodiments, the optical parameters of each element in the lens assembly can be set according to the data shown in Tables 7-1, 7-2, 7-3 and 7-4.

[0374] Table 7-1 Optical parameters of the lens assembly provided in Example 7

[0375]

[0376]

[0377] Table 7-2 Aspheric coefficients of the lens assembly provided in Example 7

[0378] Conditional Expression S2 S7 S8 S9 S10 K -6.081505667 1.020756E-01 1.314841E-01 1.514009E-01 1.421393E-03 A4 0.0327084 4.440513E-03 -1.122236E-02 -4.070575E-03 4.914699E-03 A6 -0.000362103 4.750835E-03 -1.249720E-03 -1.004085E-03 -1.276497E-04 A8 -7.71E-06 5.537894E-03 2.054635E-03 1.306139E-03 8.991312E-06 A10 6.47E-06 5.004245E-03 1.120883E-03 -7.963615E-04 -3.697112E-04 A12 -2.89E-06 3.250990E-03 5.377392E-04 -6.439193E-04 -1.549747E-04 A14 2.50E-06 1.745279E-03 6.733516E-04 -5.225976E-05 -1.745910E-05 A16 -8.77E-07 5.876103E-04 3.533379E-04 8.880596E-06 5.092935E-05 A18 1.33E-06 5.899410E-05 3.995728E-04 1.669156E-04 7.362040E-05 A20 -2.030461E-04 -1.177364E-04 -2.447576E-04 3.905725E-05 A22 -1.917844E-04 -2.110261E-04 -1.530092E-04 3.374889E-05 A24 -4.262590E-05 -2.313636E-05 9.846202E-06 1.732866E-05 A26 A28 A30

[0379] Table 7-3 Relevant data of the GA and GO units in the lens assembly provided in Example 7

[0380]

[0381]

[0382] Table 7-4 shows the parameter relationships of each component in the lens assembly provided in Example 7.

[0383] Value Figure 21 F#≤4.0 4.00 0.15 < TGA / EPD < 0.5 0.50 0.15 < TGO / EPD < 0.6 0.50 0.4 < |FGA / F| < 2.0 2.00 0.5 < | FGO / F | < 1.6 0.50 0.55 < DGA / F^2 x 1000 < 1.05 0.76 0.8 < |DGO / OA| < 1.5 0.96 0.4 < |FGC / F| < 5.0 5.00 0.7 < L / F < 1 0.85 1.5 < W / EPD < 3 2.75

[0384] In Example 7, referring to Table 7-1, the effective focal length of the lens assembly is F = 47.92 mm, the aperture number is F# = 4.0, the field of view (FOV) is 8.29°, and the entrance pupil diameter (EPD) is 11.98 mm.

[0385] Filters 600, GP1, GP2, GA, GO and GC can be made of glass or plastic, as shown in Table 1-1.

[0386] The object surface, S1 to S20, and the image surface S0 are of spherical or aspherical type, wherein the aspherical coefficient can be calculated based on the aspherical curve equation of the aforementioned embodiment.

[0387] Refer to Table 1-2, which presents the aspherical coefficients of surfaces S2, S7 to S10 using aspherical types. Here, K is the conical coefficient in the aspherical curve equation, and A4, A6, ... A30 are the 4th to 30th order aspherical coefficients of each surface, corresponding to a1, a2, ... a30 in the aspherical curve equation, respectively. 13 .

[0388] Referring to Table 1-3, the focal length of the GA unit is FGA = 95.84mm, the total thickness of the GA unit is TGA = 5.983mm, the focus travel distance of the GA unit is DGA = 1.748mm, the focal length of the GO unit is FGO = -24mm, the total thickness of the GO unit is TGO = 5.983mm, the image stabilization translation amount of the GO unit is DGO = 0.482mm, the image stabilization angle is OA = 0.5°, and the focal length of the GC unit is FGC = 239.61mm.

[0389] Wherein, the total thickness TGA of the GA unit is the distance between the object side surface S4 of lens L1 and the image side surface S6 of lens L2, and the total thickness TGO of the GO unit is the distance between the object side surface S7 of lens L3 and the image side surface S10 of lens L4.

[0390] Refer to Table 1-4, which presents the parameter relationships of each component in the lens assembly. Specifically, the aperture value F# of the lens assembly is 4; the relationship between the total thickness TGA of the focusing unit GA and the entrance pupil diameter EPD is TGA / EPD = 0.5; the relationship between the total thickness TGO of the image stabilization unit GO and the entrance pupil diameter EPD is TGO / EPD = 0.5; the relationship between the focal length FGA of the focusing unit GA and the effective focal length F of the lens assembly is |FGA / F| = 2; the relationship between the focal length FGO of the image stabilization unit GO and the effective focal length F of the lens assembly is |FGO / F| = 0.5; the relationship between the focal length of the focusing unit GA and the effective focal length F of the lens assembly is |FGO / F| = 0.5; the relationship between the focal length of the focusing unit GA and the effective focal length F of the lens assembly is |FGA / F| = 2. The relationship between the focal length travel DGA and the effective focal length F of the lens assembly is DGA / F^2×1000=0.76; the relationship between the stabilization angle OA of the image stabilization unit GO and the stabilization travel DGO is |DGO / OA|=0.96; the relationship between the focal length FGC of the compensation unit GC and the effective focal length F of the lens assembly is |FGC / F|=5; the relationship between the length L of the lens assembly and the effective focal length F is L / F=0.85; the relationship between the width W of the lens assembly and the entrance pupil diameter EPD is W / EPD=2.75.

[0391] Figure 21 These are the field curvature and distortion diagrams of the lens assembly provided in Embodiment Seven of this application. Among them, Figure 21 (a) is a field curvature diagram of the lens assembly provided in Embodiment 7 of this application. Figure 21 The solid line in (a) represents the meridional curve. Figure 21 The dashed line in (a) represents the sagittal field curve; Figure 21 (b) is a distortion diagram of the lens assembly provided in Embodiment 7 of this application.

[0392] Depend on Figure 21 As shown in the field curvature diagram (a), both the sagittal and meridional field curvatures are controlled within a small range, reflecting good control over the curvature of the imaging plane. Figure 22As can be seen from the distortion diagram in (b), the lens assembly provided in Example 7 has less distortion, which means that the image deformation caused by the main beam is smaller and the imaging distortion effect is lower.

[0393] Therefore, the lens assembly provided in Embodiment 7 can achieve the goals of telephoto characteristics, miniaturization, compact structure and high image quality, while ensuring sufficient weight reduction of the focusing unit GA, the image stabilization unit GO and the compensation unit GC.

[0394] Example 8:

[0395] Figure 22 This is a schematic diagram of the lens assembly provided in Embodiment 8 of this application. The following refers to... Figure 22 The structure and performance of the lens assembly provided in Embodiment 8 of this application are described.

[0396] like Conditional Expression As shown, the lens assembly, along the optical axis from the object side to the image side, includes a first optical path adjustment unit GP1, a focusing unit GA, an image stabilization unit GO, a second optical path adjustment unit GP2, and a compensation unit GC. An aperture stop is located at the front end of GP1, and a filter 600 is located on the image side of GC. The lens assembly provided in Embodiment 8 has a length L = 40.8 mm and a width W = 20.98 mm.

[0397] The object side has an object plane. The surface of the aperture stop is S1 (as shown in Table 8-1), and GP1 includes an object-side surface S2 and an image-side surface S3. The focusing unit GA includes three lenses, namely lenses L1, L2, and L3. Lens L1 includes an object-side surface S4 and an image-side surface S5; lens L2 includes an object-side surface and an image-side surface S6, with the object-side surface of lens L2 fitting against the image-side surface S5 of lens L1; lens L3 includes an object-side surface and an image-side surface S7, with the object-side surface of lens L3 fitting against the image-side surface S6 of lens L2. The image stabilization unit GO includes two lenses, namely lenses L4 and L5. Lens L4 includes an object-side surface S8 and an image-side surface S9. Lens L5 includes an object-side surface S10 and an image-side surface S11. GP2 includes an object-side surface S12 and an image-side surface S13. The compensation unit GC includes three lenses, namely lenses L6, L7, and L8. Lens L6 includes an object-side surface S14 and an image-side surface S15. Lens L7 includes an object-side surface S16 and an image-side surface S17; lens L8 includes an object-side surface S18 and an image-side surface S19. Filter 600 includes an object-side surface S20 and an image-side surface S21. The image side has an image plane S0.

[0398] In GP1, the object-side surface S2 is convex along the optical axis, and the image-side surface S3 is planar along the circumference. In GA, the object-side surface S4 of lens L1 is concave along the optical axis, and the image-side surface S5 is convex along the optical axis. The object-side surface of lens L2 is concave along the optical axis, and the image-side surface S6 is concave along the optical axis. The object-side surface of lens L3 is convex along the optical axis, and the image-side surface S7 is concave along the optical axis. In GO, the object-side surface S8 of lens L4 is convex along the optical axis, and the image-side surface S9 is concave along the optical axis. The object-side surface S10 of lens L5 is convex along the optical axis, and the image-side surface S11 is concave along the optical axis. The object-side surface S12 and the image-side surface S13 of GP2 are planar along the circumference. In GC, the object-side surface S14 of lens L6 is concave along the optical axis, and the image-side surface S15 is convex along the optical axis. The object-side surface S16 of lens L7 is convex at the optical axis, and the image-side surface S17 is concave at the optical axis. The object-side surface S18 of lens L8 is convex at the optical axis, and the image-side surface S19 is concave at the optical axis.

[0399] Table 8-1 shows the optical parameters of the lens assembly provided in Embodiment 8; Table 8-2 shows the aspherical coefficient of the lens assembly provided in Embodiment 8; Table 8-3 shows the relevant data of the GA unit and GO unit in the lens assembly provided in Embodiment 8; Table 8-4 shows the parameter relationships of each element in the lens assembly provided in Embodiment 8.

[0400] In some embodiments, the optical parameters of each element in the lens assembly can be set according to the data shown in Tables 8-1, 8-2, 8-3 and 8-4.

[0401] Table 8-1 Optical parameters of the lens assembly provided in Example 8

[0402]

[0403]

[0404] Table 8-2 Aspheric coefficients of the lens assembly provided in Example 8

[0405]

[0406]

[0407] Table 8-3 Relevant data of the GA unit and GO unit in the lens assembly provided in Example 8

[0408]

[0409]

[0410] Table 8-4 shows the parameter relationships of each component in the lens assembly provided in Example 8.

[0411] Value Figure 23 F#≤4.0 3.50 0.15 < TGA / EPD < 0.5 0.34 0.15 < TGO / EPD < 0.6 0.56 0.4 < |FGA / F| < 2.0 1.47 0.5 < | FGO / F | < 1.6 1.59 0.55 < DGA / F^2 x 1000 < 1.05 1.04 0.8 < |DGO / OA| < 1.5 1.50 0.4 < |FGC / F| < 5.0 1.59 0.7 < L / F < 1 0.85 1.5 < W / EPD < 3 1.53

[0412] In Example 8, referring to Table 8-1, the effective focal length of the lens assembly is F = 48mm, the aperture number is F# = 3.5, the field of view (FOV) is 9.43°, and the entrance pupil diameter (EPD) is 13.71mm.

[0413] Filters 600, GP1, GP2, GA, GO and GC can be made of glass or plastic, as shown in Table 1-1.

[0414] The object surface, S1 to S21, and the image surface are of spherical or aspherical type, wherein the aspherical coefficient can be calculated based on the aspherical curve equation of the foregoing embodiment.

[0415] Refer to Table 1-2, which presents the aspherical coefficients of surfaces S2, S8 to S11, and S14 to S19 using aspherical types. Here, K is the conical coefficient in the aspherical curve equation, and A4, A6, ..., A30 are the 4th to 30th order aspherical coefficients of each surface, corresponding to a1, a2, ..., a... in the aspherical curve equation, respectively. 13 .

[0416] Referring to Table 1-3, the focal length of the GA unit is FGA = -70.46mm, the total thickness of the GA unit is TGA = 4.72mm, the focus travel distance of the GA unit is DGA = 2.4mm, the focal length of the GO unit is FGO = 76.4mm, the total thickness of the GO unit is TGO = 7.748mm, the image stabilization translation amount of the GO unit is DGO = 0.75mm, the image stabilization angle is OA = 0.5°, and the focal length of the GC unit is FGC = -76.43mm.

[0417] Wherein, the total thickness TGA of the GA unit is the distance between the object side surface S4 of lens L1 and the image side surface S7 of lens L3, and the total thickness TGO of the GO unit is the distance between the object side surface S8 of lens L4 and the image side surface S11 of lens L5.

[0418] Refer to Table 1-4, which presents the parameter relationships of each component in the lens assembly. Specifically, the aperture value of the lens assembly is F# 3.5; the relationship between the total thickness TGA of the focusing unit GA and the entrance pupil diameter EPD is TGA / EPD = 0.34; the relationship between the total thickness TGO of the image stabilization unit GO and the entrance pupil diameter EPD is TGO / EPD = 0.56; the relationship between the focal length FGA of the focusing unit GA and the effective focal length F of the lens assembly is |FGA / F| = 1.47; the relationship between the focal length FGO of the image stabilization unit GO and the effective focal length F of the lens assembly is |FGO / F| = 1.59; the focusing unit G... The relationship between the focus travel distance DGA of A and the effective focal length F of the lens assembly is DGA / F^2×1000=1.04; the relationship between the stabilization angle OA of the image stabilization unit GO and the stabilization travel DGO is |DGO / OA|=1.5; the relationship between the focal length FGC of the compensation unit GC and the effective focal length F of the lens assembly is |FGC / F|=1.59; the relationship between the length L of the lens assembly and the effective focal length F is L / F=0.85; the relationship between the width W of the lens assembly and the entrance pupil diameter EPD is W / EPD=1.53.

[0419] Figure 23 These are the field curvature and distortion diagrams of the lens assembly provided in Embodiment 8 of this application. Among them, Figure 23 (a) is a field curvature diagram of the lens assembly provided in Embodiment 8 of this application. Figure 23 The solid line in (a) represents the meridional curve. Figure 23 The dashed line in (a) represents the sagittal field curve; Figure 23 (b) is a distortion diagram of the lens assembly provided in Embodiment 8 of this application.

[0420] Depend on Figure 23 As shown in the field curvature diagram (a), both the sagittal and meridional field curvatures are controlled within a small range, reflecting good control over the curvature of the imaging plane. ​ As shown in the distortion diagram in Figure (b), the lens assembly provided in Embodiment 8 has less distortion, which means that the image deformation caused by the main beam is smaller and the imaging distortion effect is lower.

[0421] Therefore, the lens assembly provided in Embodiment 8 can achieve the goals of telephoto characteristics, miniaturization, compact structure and high image quality, while ensuring sufficient weight reduction of the focusing unit GA, the image stabilization unit GO and the compensation unit GC.

[0422] This application also provides a camera module, including: a lens barrel, a focusing motor, an image stabilization motor, a compensation motor, an image sensor, a circuit board, and a lens assembly provided in any of the foregoing embodiments, etc. The structure of the camera module is not shown in the figures.

[0423] The focusing motor is mounted outside the focusing unit 300. It adjusts the position of the focusing unit 300 to achieve focusing for shooting objects at different distances. The image stabilization motor is mounted outside the image stabilization unit 400. It adjusts the position of the image stabilization unit 400 to prevent image blurring caused by factors such as user hand tremors. The compensation motor is mounted outside the compensation unit 500. It adjusts the position of the compensation unit 500 to compensate for aberration changes caused by movement of the focusing unit 300 and / or the image stabilization unit 400, thereby improving image quality.

[0424] The image sensor is located on a circuit board and is electrically connected to the circuit board via metal wires. The lens barrel is fitted over the lens assembly, focusing motor, image stabilization motor, and compensation motor, and fastened to the image sensor so that the image sensor is located on the image side of the lens assembly. A light filter 600 is located between the lens assembly and the image sensor. The light filter 600 is configured to receive light emitted from the lens assembly, filter it, and then transmit it to the light-receiving surface of the image sensor, which serves as the imaging surface. The image sensor is located on the light-emitting side of the light filter 600 and is configured to perform photoelectric conversion on the light processed by the light filter 600 for image formation.

[0425] For example, the image sensor may be a metal-oxide-semiconductor (CMOS) image sensor or a charge-coupled device (CCD) image sensor.

[0426] When photographing an object, light enters the lens assembly from the light-incident side, where the lens assembly converges the light. After passing through the aperture, the light is reflected at the first optical path adjustment unit 100, changing its path and passing through the zoom unit 300 and the image stabilization unit 400 before reaching the second optical path adjustment unit 200. The light undergoes two reflections at the second optical path adjustment unit 200, again changing its path before entering the zoom unit 300. The light then passes through the compensation unit 500 and enters the filter 600, where excess light waves are filtered out, finally converging on the light-receiving surface of the image sensor. The image sensor utilizes the photoelectric conversion function of photoelectric devices to convert the light image on its light-receiving surface into an electrical signal proportional to the light image, thus forming an image.

[0427] The camera module provided in this application embodiment, by reasonably setting the optical parameters of each component in the lens assembly, can not only reduce the requirements for the drive stroke and accuracy of the focusing motor, image stabilization motor and compensation motor, ensuring that the focusing unit 300, image stabilization unit 400 and compensation unit 500 are sufficiently lightweight; it can also achieve telephoto characteristics and improve image quality; at the same time, the small size of the lens assembly can reduce the size of the camera module, thereby reducing the internal space occupied by the electronic device and realizing the development of thinner and lighter electronic devices.

[0428] Figure 24 This is a schematic diagram of the structure of the camera module located inside an electronic device according to an embodiment of this application.

[0429] Combination Figure 1 and Figure 24 This application also provides an electronic device, including: a display screen 10, a mid-frame 20, a back cover 30, and a camera module 50 provided in the aforementioned embodiments.

[0430] The display screen 10 and the back cover 30 are located on opposite sides of the middle frame 20. The display screen 10, the middle frame 20, and the back cover 30 are sequentially fastened together to form the overall cavity. The overall cavity includes components such as a communication module, circuit board, battery, speaker assembly, and camera module, which are not listed here.

[0431] The back cover 30 includes a light-transmitting hole 31, the camera module is fixed on the middle frame, and the lens assembly is opposite to the light-transmitting hole. The first light path adjustment unit 100 in the lens assembly is adjacent to the back cover 30.

[0432] The electronic device provided in this application includes a camera module. The camera module is small in size, which reduces its footprint within the electronic device, contributing to its slimmer and lighter design. Furthermore, the camera module offers high image quality, improving the imaging performance of the electronic device.

[0433] It should be noted that those skilled in the art, upon considering the specification and practicing the application disclosed herein, will readily conceive of other embodiments of this application. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope of this application is indicated by the following claims.

[0434] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A lens assembly, characterized by, Comprising: a first optical path adjusting unit (100) comprising a first reflecting surface (101) configured to control a first light ray from an object side to propagate in a first direction; a second optical path adjusting unit (200) located on an exit side of the first optical path adjusting unit (100); the second optical path adjusting unit (200) comprises a second reflecting surface (201) facing the first optical path adjusting unit (100) and a third reflecting surface (202) facing an image side, and the second reflecting surface (201) and the third reflecting surface (202) are configured to control the first light ray to propagate to the image side in a second direction different from the first direction; a focusing unit (300) located on an optical path of the first light ray, the focusing unit (300) is configured to move along a direction of an optical axis of the lens assembly to perform optical focusing; a focal length FGA of the focusing unit (300) and an effective focal length F of the lens assembly satisfy: 0.4<|FGA / F|<2.0; a focusing movement stroke DGA of the focusing unit (300) and the effective focal length F of the lens assembly satisfy: 0.55<DGA / F^2×1000<1.05; an anti-shake unit (400) located on the optical path of the first light ray, the anti-shake unit (400) is configured to move along a direction perpendicular to the optical axis to perform optical anti-shake; a focal length FGO of the anti-shake unit (400) and the effective focal length F of the lens assembly satisfy: 0.5<|FGO / F|<1.6; a compensation unit (500) located on the optical path of the first light ray, the compensation unit (500) is configured to compensate for aberration variation caused by movement of the focusing unit (300) and / or the anti-shake unit (400); a focal length FGC of the compensation unit (500) and the effective focal length F of the lens assembly satisfy: 0.4<|FGC / F|<5.

0.

2. The lens assembly according to claim 1, wherein: an aperture value F# of the lens assembly satisfies: F#≤4.

3. The lens assembly according to claim 1, wherein: a total thickness TGA of the focusing unit (300) and an entrance pupil diameter EPD of the lens assembly satisfy: 0.15<TGA / EPD<0.

5.

4. The lens assembly according to claim 1, wherein: a total thickness TGO of the anti-shake unit (400) and the entrance pupil diameter EPD of the lens assembly satisfy: 0.15<TGO / EPD<0.

6.

5. The lens assembly according to claim 1, wherein: an anti-shake angle OA and an anti-shake stroke DGO of the anti-shake unit (400) satisfy: 0.8<|DGO / OA|<1.

5.

6. The lens assembly according to claim 1, wherein: in the first direction, the lens assembly has a length L; the length L and the effective focal length F of the lens assembly satisfy: 0.7<L / F <1.

7. The lens assembly according to claim 1, wherein: In the second direction, the lens assembly has a width W; The width W and an entrance pupil diameter EPD of the lens assembly satisfy: 1.5 < W / EPD < 3.

8. The lens assembly according to claim 1, wherein The focusing unit (300) comprises a plurality of lenses, and the plurality of lenses of the focusing unit (300) are sequentially distributed along the optical path of the first light; The anti-shake unit (400) comprises a plurality of lenses, and the plurality of lenses of the anti-shake unit (400) are sequentially distributed along the optical path of the first light; The compensation unit (500) comprises a plurality of lenses, and the plurality of lenses of the compensation unit (500) are sequentially distributed along the optical path of the first light.

9. The lens assembly according to claim 1, wherein The first reflecting surface (101) is configured to receive the first light from the object side and reflect the first light to control the first light to propagate in the first direction, and the first direction is different from the incident direction of the first light.

10. The lens assembly according to claim 1, wherein The second reflecting surface (201) is configured to receive the first light propagating in the first direction and reflect the first light for the first time to control the first light to propagate to the third reflecting surface (202); The third reflecting surface (202) is configured to reflect the first light after the first reflection for the second time to control the first light to propagate to the image side in the second direction.

11. A camera module, comprising: Comprise: a filter, an image sensor, and a lens assembly according to any one of claims 1-10; The filter is located on the light exit side of the lens assembly, and the filter is configured to receive light emitted by the lens assembly; The image sensor is located on the light exit side of the filter, and the image sensor is configured to perform photoelectric conversion on the light processed by the filter, and then used for imaging.

12. An electronic device, comprising: Comprise: a display screen, a middle frame, a back shell, and a camera module according to claim 11; The display screen and the back shell are located on opposite sides of the middle frame; The back shell comprises a light transmission hole, the camera module is fixed to the middle frame, and the lens assembly is opposite to the light transmission hole.

Images