Lens assembly, camera module and electronic equipment

Abstract

The embodiment of the invention provides a lens assembly, a camera module and electronic equipment, and relates to the technical field of cameras, and the lens assembly can comprise a first lens unit and a second lens unit which are arranged from an object side to an image side along an optical axis, and the second lens unit can move towards the image side along the optical axis. Therefore, the lens assembly can be switched between the infinity state and the micro-distance state, and the lens assembly can realize the telephoto and micro-distance functions. And the focal power of the first lens unit and the second lens unit and the focal power of the first lens closest to the object side are reasonably distributed, and the light incoming amount is increased, so that the lens assembly has the characteristic of large aperture, the macro function of long-focus telephoto, high definition and high magnification is realized, high-quality imaging of a long-shot scene is ensured, and the lens assembly has a wide application prospect. And high-definition imaging of a close-shot scene is realized.

Description

[0001] This application is a divisional application. The application number of the original application is 202311129967.5, and the original application date is August 31, 2023. The entire contents of the original application are incorporated into this application by reference. Technical Field

[0002] The present application relates to the field of camera technology, and in particular to a lens assembly, a camera module and an electronic device. Background Art

[0003] In recent years, with the development of camera technology, camera modules have become an indispensable functional component in electronic products such as mobile phones, tablets, laptops and wearable devices. With the multifunctional development of electronic devices, their shooting effects and requirements are increasingly in line with SLR cameras. The functional effects of camera modules have gradually become one of the important characteristics of electronic devices.

[0004] At present, the camera module usually includes a lens assembly and an image sensor. The lens assembly is usually formed by a plurality of lens lenses arranged in sequence along the optical axis. After passing through the lens assembly, the light is projected to the image sensor to realize photoelectric conversion, and then used for imaging. Therefore, the performance of the lens assembly directly determines the imaging performance of the camera module. Among them, the large aperture design is conducive to the camera's night scene shooting, snapshot, video and background blur functions. Moreover, in different shooting scenes, such as dark or night shooting environments, when shooting distant objects, the lens assembly needs a large aperture to achieve more light intake, so as to have a better shooting effect and meet the shooting requirements of distant infinite scenes. For close-up shooting scenes, such as shooting close-up objects such as flowers, dolls, and insects, the large aperture lens assembly has better clarity and can achieve the shooting effect of the details of such objects in close-up macro scenes.

[0005] Therefore, there is an urgent need for a large aperture lens assembly that can meet the high-quality shooting requirements of long-range shooting scenes and can also achieve high-resolution macro shooting functions. Summary of the invention

[0006] The embodiments of the present application provide a lens assembly, a camera module and an electronic device. The lens assembly can realize a large aperture design and a telephoto shooting function to meet the high-quality imaging requirements of long-range shooting scenes. It can also realize a macro shooting function with high magnification and resolution to meet the high-definition imaging requirements of close-range shooting scenes.

[0007] The first aspect of the embodiment of the present application provides a lens assembly, which at least includes a first lens unit and a second lens unit arranged in sequence from the object side to the image side along the optical axis. The first lens unit and the second lens unit respectively include lenses with optical power. The first lens unit has a positive optical power, and the second lens unit has a negative optical power. The architecture of two lens units is adopted, and the optical powers of the two lens units of the first lens unit and the second lens unit are reasonably allocated, which is beneficial to realizing the large aperture design of the lens assembly.

[0008] The second lens unit is movably arranged along the optical axis. The second lens unit moves toward the image side along the optical axis to switch the lens assembly from the infinite far state to the macro state, so that the lens assembly can have a telephoto shooting function and a macro shooting function. Moreover, the large aperture design of the lens assembly can meet the requirements of the lens assembly in the long-distance shooting scene, realize the telephoto function of the lens assembly, ensure high-quality imaging in the long-distance shooting scene, and can also improve the resolution of the lens assembly in the close-range shooting scene, which is beneficial to realizing the macro function with high magnification and resolution and ensuring high-definition imaging in the close-range shooting scene.

[0009] The lens of the first lens unit at least includes a first lens. The first lens is located on the side adjacent to the object side in the first lens unit. The first lens satisfies the conditional formula: |(R11 + R12) / f1| > 2.3, where R11 is the curvature radius of the object side surface of the first lens, R12 is the curvature radius of the image side surface of the first lens, and f1 is the focal length of the first lens. As the lens with optical power closest to the object side in the first lens unit and the second lens unit, when light enters the first lens unit and the second lens unit, it first passes through the first lens. Combining the above two-lens-unit architecture, by making the first lens unit satisfy the above conditional formula, the optical power of the first lens can be more reasonably allocated, which is beneficial to improving the refractive ability of the first lens, increasing the light input of the lens assembly, and realizing the large aperture design of the lens assembly.

[0010] The lens assembly satisfies the conditional formula: 0.75 < f1 / EFL1 < 1, where EFL1 is the focal length of the lens assembly in the infinite far state. When the lens assembly has a telephoto characteristic in the long-distance shooting scene, it is ensured that the first lens has a stronger refractive ability, and the optical power of the first lens is more reasonably allocated, which is further beneficial to increasing the aperture design of the lens assembly.

[0011] In a possible implementation manner, the aperture number F#1 of the lens assembly in the infinite far state satisfies the conditional formula: 1.0 < F#1 < 2.5. The aperture value of the lens assembly is small, and it has the characteristic of a large aperture, which ensures that the lens assembly has a high light input, can better realize the telephoto function, and ensure high-quality imaging in the long-distance shooting scene.

[0012] In a possible implementation, when the lens assembly is in the macro state, the aperture number F#2 satisfies the conditional expression: 1.0 < F#2 < 3. The aperture value is very small and is similar to the aperture value in the infinity state, significantly improving the resolution of the lens assembly, enabling better realization of the macro function, and achieving high-definition imaging in the close-up shooting scenario.

[0013] In a possible implementation, when the lens assembly is in the macro state, the magnification Mag satisfies the conditional expression: 0.15x < Mag < 0.5x. The lens assembly has a high magnification, can better meet the requirements of the close-up macro shooting scenario, and further improves the imaging quality and effect of the lens assembly in the close-up shooting scenario.

[0014] In a possible implementation, the lens assembly also satisfies the conditional expression: 0.1 < |G1 / EFL1| < 0.9, where G1 is the focal length of the first lens unit. The optical power of the first lens unit is reasonably distributed, enabling the first lens unit to have a large refractive power, which is beneficial to increasing the aperture of the lens assembly and achieving high-quality imaging of the lens assembly in the long-distance shooting scenario.

[0015] In a possible implementation, the lens assembly also satisfies the conditional expression: 0.1 < |G2 / EFL1| < 0.9, where G2 is the focal length of the second lens unit. The optical power of the second lens unit is reasonably distributed, enabling the second lens unit to also have a large refractive power, which is also beneficial to increasing the aperture of the lens assembly and achieving high-quality imaging of the lens assembly in the long-distance shooting scenario.

[0016] In a possible implementation, the lens assembly also satisfies the conditional expression: 0.15 < |EFL2 / TTL| < 0.95, where TTL is the total optical length of the lens assembly and EFL2 is the focal length of the lens assembly in the macro state. When the lens assembly is in the macro state, it has a small focal length, which also makes the total optical length TTL of the lens assembly small. The lens assembly can achieve a small volume design, which is beneficial to meeting the thinning design requirements of the camera module and the electronic device.

[0017] In a possible implementation, the lens assembly also satisfies the conditional expression: 1.1 < EFL1 / EFL2 < 3.2, where EFL2 is the focal length of the lens assembly in the macro state. Under the condition that the lens assembly has better telephoto characteristics in the long-distance shooting scenario, it can ensure that the lens assembly has a larger magnification in the macro state, which is beneficial to achieving high-quality imaging in the long-distance shooting scenario and the close-up macro shooting effect with a high magnification.

[0018] In a possible implementation, the refractive index Nd1 of the first lens satisfies the conditional formula: 1.4 < Nd1 < 1.85. The first lens has a relatively low refractive index, which can effectively improve the image quality of imaging and is conducive to increasing the aperture of the lens assembly to enhance the imaging quality.

[0019] In a possible implementation, the molding material of the first lens is glass or plastic. Both have relatively low costs, which are conducive to reducing the cost of the lens assembly, and have high design flexibility, facilitating promotion and production realization.

[0020] In a possible implementation, the shape of the lens includes at least one or a combination of a circle, an ellipse, a racetrack shape, a square, etc. This is conducive to enhancing the design flexibility of the lens. Among them, lenses such as racetrack-shaped or square lenses can be formed by cutting circular or elliptical lenses, which is conducive to reducing the size of the lens, reducing the occupied space of the lens, and realizing the small size and thinning design of the lens assembly.

[0021] In a possible implementation, the first lens unit includes a first lens, a second lens, and a third lens arranged in sequence from the object side to the image side along the optical axis. The first lens has a positive optical power, the second lens has a negative optical power, and the third lens has a positive optical power. The second lens unit includes a fourth lens, a fifth lens, and a sixth lens arranged in sequence from the object side to the image side along the optical axis. The fourth lens has a negative optical power, the fifth lens has a positive optical power, and the sixth lens has a negative optical power. By adopting a structure with three lenses as a lens unit, the formed lens assembly is relatively simple, has a small volume and a low cost, and by reasonably distributing the optical power of each lens, it is conducive to further increasing the aperture of the lens assembly and realizing the large aperture design of the lens assembly.

[0022] The second aspect of the embodiments of the present application provides a camera module, which at least includes an image sensor and any one of the above lens assemblies, and the image sensor is located on the side of the lens assembly facing the image side.

[0023] By including a lens assembly with large aperture characteristics, the lens assembly also has a telephoto function and a macro function, which can achieve high-quality imaging in long-distance shooting scenarios, and can also achieve high resolution and magnification in close-up shooting scenarios, enriching the shooting functions of the camera module and ensuring high-quality imaging of the camera module in long-distance and close-up shooting scenarios. In addition, the lens assembly has a small volume and cost, which is conducive to realizing the thinning design of the camera module.

[0024] The third aspect of the embodiments of the present application provides an electronic device, which at least includes a housing and the above camera module, and the camera module is arranged on the housing.

[0025] By including a camera module, the camera module can meet the imaging requirements of long-range shooting and close-up shooting, achieve high-quality imaging in long-range and close-up shooting scenes, help improve the performance of electronic devices, and also meet the thinning design requirements of electronic devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0027] Figure 2 A schematic diagram of the structure of a camera module provided in an embodiment of the present application when the lens assembly is in an infinite distance state;

[0028] Figure 3 A structural schematic diagram of a lens assembly in a camera module in a macro state provided in an embodiment of the present application;

[0029] Figure 4 A schematic diagram of a simulation structure of a lens assembly in a camera module provided in Embodiment 1 of the present application when the lens assembly is in an infinite distance state;

[0030] Figure 5 A schematic diagram of a simulation structure of a lens assembly in a camera module provided in Embodiment 1 of the present application when the lens assembly is in a macro state;

[0031] Figure 6a A modulation transfer function curve diagram of a lens assembly provided in Example 1 of the present application when it is in an infinite distance state;

[0032] Figure 6b A modulation transfer function curve diagram of a lens assembly provided in Embodiment 1 of the present application when in a macro state;

[0033] Figure 7 A schematic diagram of a simulation structure of a lens assembly in a camera module provided in Embodiment 2 of the present application when the lens assembly is in an infinite distance state;

[0034] Figure 8 A schematic diagram of a simulation structure of a lens assembly in a camera module provided in Embodiment 2 of the present application when the lens assembly is in a macro state;

[0035] Figure 9a A modulation transfer function curve diagram of a lens assembly provided in Embodiment 2 of the present application when it is in an infinite distance state;

[0036] Figure 9b A modulation transfer function curve diagram of a lens assembly provided in Embodiment 2 of the present application when it is in a macro state;

[0037] Fig.10A schematic diagram of a simulation structure of a lens assembly in a camera module provided in Embodiment 3 of the present application when the lens assembly is in an infinite distance state;

[0038] Fig.11 A schematic diagram of a simulation structure of a lens assembly in a camera module provided in Embodiment 3 of the present application when the lens assembly is in a macro state;

[0039] Fig.12a A modulation transfer function curve diagram of a lens assembly provided in Embodiment 3 of the present application when it is in an infinite distance state;

[0040] Figure 12b A modulation transfer function curve diagram of a lens assembly provided in Embodiment 3 of the present application when it is in a macro state;

[0041] Fig.13 A schematic diagram of a simulation structure of a lens assembly in a camera module provided in Embodiment 4 of the present application when the lens assembly is in an infinite distance state;

[0042] Fig.14 A schematic diagram of a simulation structure of a lens assembly in a camera module provided in a fourth embodiment of the present application when the lens assembly is in a macro state;

[0043] Fig.15a A modulation transfer function curve diagram of a lens assembly provided in Embodiment 4 of the present application when it is in an infinite distance state;

[0044] Fig.15b A modulation transfer function curve diagram of a lens assembly provided in Embodiment 4 of the present application when it is in a macro state;

[0045] Fig.16 A schematic diagram of a simulation structure of a lens assembly in a camera module provided in Embodiment 5 of the present application when the lens assembly is in an infinite distance state;

[0046] Fig.17 A schematic diagram of a simulation structure of a lens assembly in a camera module provided in Embodiment 5 of the present application when the lens assembly is in a macro state;

[0047] Fig.18 A schematic diagram of a simulation structure of a lens assembly in a camera module provided in Embodiment 6 of the present application when the lens assembly is in an infinite distance state;

[0048] Fig.19 A schematic diagram of a simulation structure of a lens assembly in a camera module provided in Embodiment 6 of the present application when the lens assembly is in a macro state;

[0049] Fig. 20 A modulation transfer function curve diagram of a lens assembly provided in Example 6 of the present application when it is in an infinite distance state;

[0050] Fig.21A schematic diagram of a simulation structure of a lens assembly in a camera module provided in Embodiment 7 of the present application when the lens assembly is in an infinite distance state;

[0051] Fig. 22 A schematic diagram of a simulation structure of a lens assembly in a camera module provided in Embodiment 7 of the present application when the lens assembly is in a macro state;

[0052] Fig.23 A modulation transfer function curve diagram of a lens assembly provided in Embodiment 7 of the present application when it is in an infinite distance state;

[0053] Fig.24 A schematic diagram of a simulation structure of a lens assembly in a camera module provided in Embodiment 8 of the present application when the lens assembly is in an infinite distance state;

[0054] Fig.25 A schematic diagram of a simulation structure of a lens assembly in a camera module provided in Embodiment 8 of the present application when the lens assembly is in a macro state;

[0055] Fig.26 A schematic diagram of a simulation structure of a lens assembly in a camera module provided in Embodiment 9 of the present application when the lens assembly is in an infinite distance state;

[0056] Fig. 27 A schematic diagram of a simulation structure of a lens assembly in a camera module provided in Embodiment 9 of the present application when the lens assembly is in a macro state;

[0057] Fig.28 A modulation transfer function curve diagram of a lens assembly provided in Embodiment 9 of the present application when it is in an infinite distance state;

[0058] Fig.29 A schematic diagram of a simulation structure of a lens assembly in a camera module provided in Embodiment 10 of the present application when the lens assembly is in an infinite distance state;

[0059] Fig.30 A schematic diagram of a simulation structure of a lens assembly in a camera module provided in Embodiment 10 of the present application when the lens assembly is in a macro state;

[0060] Fig.31 A modulation transfer function curve diagram of a lens assembly provided in Embodiment 10 of the present application when it is in an infinite distance state;

[0061] Fig.32 A schematic diagram of a simulation structure of a lens assembly in a camera module provided in the eleventh embodiment of the present application when the lens assembly is in an infinite distance state;

[0062] Fig.33 A schematic diagram of a simulation structure of a lens assembly in a camera module provided in the eleventh embodiment of the present application when the lens assembly is in a macro state;

[0063] Fig.34 A schematic diagram of a simulation structure of a lens assembly in a camera module provided in Embodiment 12 of the present application when the lens assembly is in an infinite distance state;

[0064] Fig.35 A schematic diagram of the simulation structure of a lens assembly in a camera module provided in the twelfth embodiment of the present application when in a macro state.

[0065] Description of reference numerals:

[0066] 100- electronic equipment;

[0067] 110- Camera module;

[0068] 10- Lens assembly;

[0069] 101- a first lens unit;

[0070] 11-first lens; 12-second lens; 13-third lens;

[0071] 102- second lens unit;

[0072] 14- fourth lens; 15- fifth lens; 16- sixth lens;

[0073] 103- aperture;

[0074] 20- Image sensor;

[0075] 30-Filter;

[0076] 120-housing;

[0077] 130-speaker hole;

[0078] 140-Data interface. DETAILED DESCRIPTION

[0079] The terms used in the implementation section of this application are only used to explain the specific embodiments of this application and are not intended to limit this application.

[0080] To facilitate understanding, the relevant technical terms involved in the embodiments of the present application are first explained and illustrated.

[0081] The object side, with the lens assembly as the boundary, the side where the photographed object is located is the object side, and the side of the lens or optical element facing the object side is the object side surface.

[0082] The image side, with the lens assembly as the boundary, the side where the image of the object is located is the image side, and the side of the lens or optical element facing the image side is the image side side.

[0083] The optical axis refers to the light that passes through the center of each lens element of the lens assembly (see Figure 2The imaginary axis L in the figure).

[0084] The imaging plane is located on the image side of all the lenses in the lens assembly and is the plane on which the image is formed after the light passes through each lens in the lens assembly in sequence. In the embodiment of the present application, the imaging plane may refer to the photosensitive surface of the image sensor.

[0085] Half image height (IMH for short in the present embodiment) refers to half of the full image height of the image formed by the lens assembly, which is the maximum radius of the imaging circle.

[0086] The optical focal length is equal to the difference between the convergence of the image-side beam and the convergence of the object-side beam, and represents the ability of the lens to refract incident parallel light beams.

[0087] Positive power means that the lens has a positive focal length and has the effect of converging light.

[0088] Negative optical power means that the lens has a negative focal length and has the effect of diverging light.

[0089] The Abbe number, also known as the dispersion coefficient, refers to the difference ratio of the refractive index of an optical material at different wavelengths, indicating the degree of dispersion of the material.

[0090] Refractive index is the ratio of the speed of light in a vacuum (air) to the speed of light in the lens material. The higher the refractive index of the lens, the stronger its ability to refract incident light. The higher the refractive index, the thinner the lens, that is, with the same thickness at the center of the lens, the same degree and the same material, the edge of the lens with a high refractive index is thinner than that of the lens with a low refractive index.

[0091] The radius of curvature is the reciprocal of the curvature. The curvature of a plane curve is the rotation rate of the tangent direction angle at a point on the curve to the arc length. It is defined by differentiation and indicates the degree to which the curve deviates from a straight line.

[0092] Focal length, also known as focal length, is usually expressed as effective focal length (EFL) to distinguish it from parameters such as front focal length and back focal length. Focal length or effective focal length is a measure of the convergence or divergence of light in an optical system. It refers to the vertical distance from the optical center of a lens or lens group to the focal plane when an infinitely distant scene forms a clear image on the focal plane through a lens or lens group. From a practical point of view, it can be understood as the distance from the center of the lens assembly to the imaging plane.

[0093] Infinity means that when the object distance exceeds a certain amount, the object can be considered to be captured by the lens assembly in the form of a parallel beam from an infinitely distant light point. When the lens assembly is in the infinite state (∞), it means that when the lens assembly is focused at "∞", the infinitely distant scene can be clearly imaged.

[0094] Macro is a photography method that is achieved at a relatively close distance with a large magnification. It can capture images that are as large as or smaller than the actual object. In the macro state, the lens assembly has a magnification of one or more times, and the close-up distance is relatively close. In the macro state, the focal length of the lens assembly can be smaller than the focal length of the lens assembly in the infinite state, with a higher resolution, so that the object can be photographed more clearly.

[0095] The aperture is a device used to control the amount of light that passes through a lens or lens group and enters the photosensitive surface of a camera module. It is usually fixed inside the camera module, and the aperture size can be expressed by the F# value.

[0096] The aperture number F# is a relative value (the inverse of the relative aperture) obtained by the focal length of the lens assembly / the light-passing diameter (entrance pupil diameter) of the lens assembly. The smaller the F# value, the more light enters in the same unit time, the smaller the depth of field, and the background content of the photo will be blurred, producing an effect similar to that of a telephoto lens.

[0097] The amount of light entering refers to how much light passes through the lens or lens group (also known as the lens assembly) and shines on the photosensitive surface.

[0098] The target surface refers to the photosensitive surface of the image sensor. The larger the target surface, the greater the sensitivity of the image sensor and the greater the image height.

[0099] Total track length (TTL), also known as total height or total length, refers to the total length from the object side of the lens closest to the object side in the lens assembly to the imaging plane on the optical axis, and is the main factor in determining the height of the camera module. Figure 2 As shown, the total optical length TTL may be the length on the optical axis from the object side of the lens (such as the first lens 11) disposed closest to the object side to the photosensitive surface of the image sensor.

[0100] Modulation transfer function (MTF) is an evaluation measure of system imaging quality.

[0101] An embodiment of the present application provides an electronic device, which may include but is not limited to a mobile phone, a tablet personal computer, a laptop computer, a camera, an ultra-mobile personal computer (UMPC), a handheld computer, a walkie-talkie, a netbook, a POS machine, a personal digital assistant (PDA), a wearable device, a virtual reality (VR) device (such as VR glasses, VR helmets, etc.), an augmented reality (AR) device (such as AR glasses, AR helmets, etc.), a vehicle-mounted device, a surveillance camera device, and other electronic devices that can realize a shooting function.

[0102] In the embodiment of the present application, the electronic device is taken as a mobile phone as an example. The mobile phone may be a bar phone, or the mobile phone may be a folding phone. Specifically, the following description is made by taking the electronic device as a bar phone as an example.

[0103] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0104] See also Figure 1 As shown, the electronic device 100 may include a shell 120 and a camera module 110, wherein the shell 120 may serve as the main load-bearing structure of the electronic device 100, and the camera module 110 may be arranged on the shell 120. Exemplarily, the shell 120 may have a accommodating cavity (not shown in the figure), and the camera module 110 may be assembled on the shell 120, and at least part of it may be located in the accommodating cavity of the shell 120.

[0105] The camera module 110 is used to realize the function of shooting, for example, it can be used to take pictures and record images, etc. Its shooting scenes can include various complex and diverse shooting application scenes, such as indoor, outdoor, people, environment and other different scenes.

[0106] The electronic device 100 may further include a display screen (not shown in the figure), which may be fixed to one side of the housing 120 , and the plane on the side where the display screen is located may serve as a display surface of the electronic device 100 to display images and the like.

[0107] In the embodiment of the present application, the side where the display surface of the electronic device 100 is located is taken as the front side of the electronic device 100, and the side opposite to the front side is taken as the back side of the electronic device 100. The camera module 110 may be a front camera lens, such as the light inlet of the camera module 110 may be located on the front side of the electronic device 100, for taking selfies or photographing other objects.

[0108] Alternatively, the camera module 110 may also be a rear camera lens, as shown in FIG. Figure 1 As shown, the light inlet of the camera module 110 can be located on the back of the electronic device 100 for photographing other objects and can also be used for taking selfies.

[0109] The number of the camera module 110 included in the electronic device 100 may be one, or the number of the camera module 110 may be multiple, so as to meet different shooting requirements.

[0110] The electronic device 100 may also include other structural components, for example, Figure 1 As shown, the electronic device 100 may further include a speaker hole 130, which may be provided on the housing 120, and the speaker 130 may be used to play the audio and the like of the electronic device 100. A sound emitter (not shown in the figure) may also be provided in the accommodating cavity of the housing 120, and the sound emitter may be used to form a sound, and the sound emitter may be connected to the speaker hole 130, so that the sound may be transmitted through the speaker hole 130.

[0111] The electronic device 100 may also have a data interface 140, which may be opened on the shell 120. A control circuit board (not shown in the figure) may also be arranged in the accommodating cavity of the shell 120. The control circuit board may be connected to the data interface 140. The data interface 140 may be used to power the electronic device 100, or the data interface 140 may also be used to connect the electronic device 100 with headphones, external multimedia devices, etc. (such as external cameras, external projection devices, etc.).

[0112] It is to be understood that the structure illustrated in the embodiment of the present application does not constitute a specific limitation on the electronic device 100. In other embodiments of the present application, the electronic device 100 may include more or fewer components than shown in the figure, or combine certain components, or separate certain components, or arrange the components differently. For example, the electronic device 100 may also include devices such as sensors, processors, drive structures, and flashlights.

[0113] The camera module usually includes a lens assembly and an image sensor. Light can enter the camera module through the lens assembly. Specifically, light reflected by the object being photographed can pass through the lens assembly. The lens assembly is used to form an optical image (light signal) of the object being photographed. For example, the lens assembly can adjust and control the light path to form an optical image, and irradiate the optical image to the image sensor. The image sensor can realize the photoelectric conversion function. The image sensor receives the optical image and converts it into an electrical signal for imaging display.

[0114] Therefore, the optical performance of the lens assembly will have a great impact on the imaging quality and effect of the camera module. With the continuous increase in the demand for shooting on mobile phones and other devices, higher and higher requirements are also put forward for the aperture of the lens assembly and the applicable shooting scenes. The large aperture design of the lens assembly can increase the overall light intake of the lens assembly, which is conducive to night scene shooting, background blur and snapshot functions. Moreover, in darker or night shooting environments, when shooting distant objects, the large aperture increases the amount of light intake and can capture better images. For close-up shooting scenes, such as shooting close-up objects such as flowers, dolls, and insects, the large aperture lens assembly has better clarity and ensures good resolution, so that clear imaging of the details of things can be achieved.

[0115] Based on this, the embodiment of the present application provides a lens assembly, which adopts a two-lens unit structure and enables the lens unit adjacent to the image side to be movable, so that the lens assembly can switch from infinity to macro state, and the lens assembly can realize telephoto and macro shooting functions. And by reasonably allocating the lens units and the focal length of the lenses, the lens assembly has the characteristics of large aperture, small size, low cost and high resolution, which can not only meet the high-quality imaging requirements in long-range shooting scenes, but also realize the macro function of high magnification and resolution, and meet the high-definition imaging requirements in close-range shooting scenes.

[0116] The lens assembly provided in the embodiments of the present application and the camera module including the lens assembly are described in detail below in conjunction with the accompanying drawings.

[0117] Figure 2 A schematic structural diagram of a camera module provided in an embodiment of the present application when the lens assembly is in an infinite distance state.

[0118] See also Figure 2 As shown, the camera module 110 may include a lens assembly 10 and an image sensor 20, wherein the image sensor 20 may be located on the side of the lens assembly 10 facing the image side, that is, the lens assembly 10 may be located between the object to be photographed and the image sensor 20, and the photosensitive surface (also referred to as the imaging surface) of the image sensor 20 may face the lens assembly 10.

[0119] The light reflected by the object enters the camera module 110, forms an image after passing through the lens assembly 10 and is irradiated onto the photosensitive surface of the image sensor 20. The photosensitive surface of the image sensor 20 receives the optical image and converts it into an image electrical signal output, thereby realizing the functions of the camera module 110 such as taking pictures or videos.

[0120] To ensure the photosensitivity of the image sensor 20, the image sensor 20 can be located in a housing inside the electronic device housing, and the lens assembly 10 can be located on the side of the image sensor 20 facing the display screen, or the lens assembly 10 can also be located on the side of the image sensor 20 facing away from the display screen.

[0121] The image sensor 20 may be a charge-coupled device (CCD) or a complementary metal oxide semiconductor (CMOS), or other devices capable of realizing a photoelectric conversion function.

[0122] Continue to see Figure 2 As shown, the camera module 110 may also include a filter 30, which may be located between the lens assembly 10 and the image sensor 20. Figure 2 The dotted line L in the figure is the optical axis. Along the direction of the optical axis L from the object side to the image side, the lens assembly 10, the filter 30 and the image sensor 20 are arranged in sequence. The light entering the camera module 110 passes through the lens assembly 10 and the filter 30 in sequence and then irradiates the photosensitive surface of the image sensor 20.

[0123] The filter 30 has a filtering effect, and can allow light within a specific wavelength range to pass through, thereby filtering out stray light that is not conducive to imaging, which is beneficial to improving imaging quality.

[0124] The camera module 110 may also include an image processor, a memory, etc. (not shown in the figure). The image sensor 20 may transmit the converted electrical signal to the image processor, the memory, etc. for processing and then transmit it to the electronic device 100, thereby realizing the display of the image of the photographed object through the display screen of the electronic device 100.

[0125] Of course, in some other examples, the camera module 110 may also include other structural components, such as a detection sensor, a driving structure, and a circuit board.

[0126] Among them, continue to see Figure 2 As shown, the lens assembly 10 may include at least a first lens unit 101 and a second lens unit 102 arranged in sequence from the object side to the image side along the optical axis L. The first lens unit 101 may be composed of lenses with optical power, and the second lens unit 102 may also be composed of lenses with optical power.

[0127] The lens assembly 10 may also include a lens barrel (not shown in the figure), which may serve as the main bearing structure of the lens assembly 10. The first lens unit 101 and the second lens unit 102 may be disposed in the lens barrel, and the optical axis of the lens assembly 10 may coincide with the central axis of the lens barrel. Light holes may be provided at opposite ends of the lens barrel along the optical axis to allow light to enter the lens barrel and pass through the lens assembly 10, and to allow light passing through the lens assembly 10 to be emitted to illuminate the image sensor 20.

[0128] The lens assembly 10 may further include an aperture 103, which may be located on a side of the first lens unit 101 facing the object side, that is, compared with the first lens unit 101 and the second lens unit 102, the aperture 103 may be arranged closer to the object side, and the aperture 103 may be fixed in the lens barrel, for example, the aperture 103 may be fixed on a lens (such as the first lens 11) in the first lens unit 101 that is arranged closest to the object side.

[0129] Of course, in some other examples, the aperture 103 can also be fixed outside the lens barrel. The light can first pass through the aperture 103, and then pass through the first lens unit 101 and the second lens unit 102 in sequence before being emitted. The aperture 103 can limit the light entering the lens assembly 10 to adjust the intensity of the light, and can be used to control the amount of light entering the lens assembly 10.

[0130] The first lens unit 101 may include multiple lenses, and the multiple lenses may be arranged in sequence from the object side to the image side along the optical axis. The centers of the multiple lenses may overlap and be located on the optical axis.

[0131] For example, see Figure 2 As shown, the first lens unit 101 may include three lenses with optical focal lengths, such as a first lens 11, a second lens 12 and a third lens 13. The first lens 11, the second lens 12 and the third lens 13 are arranged in sequence from the object side to the image side along the optical axis L, that is, the first lens 11 is the lens with optical focal length that is closest to the object side in the first lens unit 101. The first lens 11 may also be the lens with optical focal length that is closest to the object side in the first lens unit 101 and the second lens unit 102.

[0132] Of course, in some examples, the number of lenses in the first lens unit 101 may also be one, for example, the first lens unit 101 may only include the first lens 11 .

[0133] Correspondingly, the second lens unit 102 may also include multiple lenses, and the multiple lenses are arranged in sequence from the object side to the image side along the optical axis, and the centers of the multiple lenses may overlap and be located on the optical axis.

[0134] For example, see Figure 2As shown, the second lens unit 102 may also include three lenses with optical focal lengths, such as a fourth lens 14, a fifth lens 15 and a sixth lens 16. The fourth lens 14, the fifth lens 15 and the sixth lens 16 are arranged in sequence from the object side to the image side along the optical axis L, that is, the sixth lens 16 may be the lens with optical focal length that is closest to the image side in the second lens unit 102, and the sixth lens 16 may also be the lens with optical focal length that is closest to the image side in the first lens unit 101 and the second lens unit 102.

[0135] Of course, in some examples, the number of lenses in the second lens unit 102 may also be one, for example, the second lens unit 102 may only include the sixth lens 16 .

[0136] In the embodiment of the present application, the first lens unit 101 includes three lenses with optical power, such as the first lens 11, the second lens 12 and the third lens 13, and the second lens unit 102 includes three lenses with optical power, such as the fourth lens 14, the fifth lens 15 and the sixth lens 16. The lens assembly 10 formed by using the structure of three lenses as one lens unit and two lens units in total is relatively simple, with a smaller volume and lower cost, which is easier to meet the thinning requirements of camera modules and electronic devices, and is easy to produce and promote, thereby improving the yield rate of lens assemblies.

[0137] Among them, the first lens unit 101 can have positive optical power, and the second lens unit 102 can have negative optical power. Reasonable allocation of the optical power of the first lens unit 101 and the second lens unit 102 is conducive to realizing a large aperture design of the lens assembly 10.

[0138] It should be noted that when the first lens unit 101 includes multiple lenses, the multiple lenses can all have positive optical power, or some of the multiple lenses can have positive optical power and some of the lenses can have negative optical power, so that the first lens unit 101 after the multiple lenses are combined has positive optical power.

[0139] For example, the first lens 11 and the third lens 13 in the first lens unit 101 can have positive optical power respectively, and the second lens 12 can have negative optical power, which is conducive to better distribution of the optical power of each lens in the first lens unit 101 and to realize a large aperture design of the lens assembly 10.

[0140] Correspondingly, when the second lens unit 102 includes multiple lenses, the multiple lenses can all have negative optical power, or some of the multiple lenses can have negative optical power and some of the lenses can have positive optical power, so that the second lens unit 102 after the multiple lenses are combined has negative optical power.

[0141] For example, the fourth lens 14 and the sixth lens 16 of the second lens unit 102 may have negative optical power respectively, and the fifth lens 15 may have positive optical power, which is conducive to better distribution of the optical power of each lens in the second lens unit 102, thereby realizing a large aperture design.

[0142] Among them, the curvature radius of the object side of the first lens 11 is R11, the curvature radius of the image side of the first lens 11 is R12, and the focal length of the first lens 11 is f1. The first lens 11 can satisfy the conditional expression |(R11+R12) / f1|>2.3. The first lens 11 is the lens with optical focal length closest to the object side in the first lens unit 101 and the second lens unit 102. When light enters the first lens unit 101 and the second lens unit 102, it first passes through the first lens 11. Combined with the above-mentioned two lens unit structures, the first lens unit 101 satisfies the conditional expression, and the optical focal length of the first lens 11 can be more reasonably allocated, which is beneficial to improving the refractive ability of the first lens 11, increasing the amount of light entering the lens assembly 10, and realizing the large aperture design of the lens assembly 10.

[0143] In order to meet the requirements of long-range shooting scenes and close-up shooting scenes, in the embodiment of the present application, the second lens unit 102 can be arranged in a movable manner, and the first lens unit 101 can be fixedly arranged in an immovable manner. The movement of the second lens unit 102 is used to realize the switching of the lens assembly 10 between the infinite state and the macro state, thereby realizing the telephoto and macro functions. Specifically, the second lens unit 102 can be arranged movably along the optical axis L, that is, all the lenses of the second lens unit 102 can be moved along the optical axis L toward the image side or away from the image side.

[0144] For example, when the lens assembly 10 is in the infinite state, the lens assembly 10 has a telephoto function, and the lens assembly 10 can be used to achieve telephoto shooting of distant scenes, especially in dark or night environments, such as landscapes, night scenes, starry sky, Milky Way, aurora, etc. Figure 2 As shown, the second lens unit 102 in the lens assembly 10 is arranged closer to the first lens unit 101, and is arranged relatively far away from the image sensor 20 and the filter 30. The large aperture design of the lens assembly 10 can increase the amount of light entering, improve the imaging quality and effect, and the lens assembly 10 can have a longer focal length to achieve the telephoto characteristics of the lens assembly 10, meet the needs of long-range shooting scenes, and ensure high-quality imaging effects in scenes such as long-range shooting.

[0145] Wherein, when the lens assembly 10 is in the infinite far state, the focal length is EFL1. The ratio range of the focal length f1 of the first lens 11 to the focal length EFL1 of the lens assembly 10 can be 0.75 < f1 / EFL1 < 1. When the lens assembly 10 has a telephoto characteristic in a long-distance shooting scenario, it ensures that the first lens 11 has a stronger refractive ability, more reasonably distributes the optical power of the first lens 11, further facilitates increasing the aperture design of the lens assembly 10, and improves the imaging quality and effect of long-distance telephoto shooting.

[0146] Figure 3 FIG. is a schematic structural diagram of a lens assembly in a macro state provided by an embodiment of the present application in a camera module.

[0147] When the lens assembly 10 switches to the macro state, in combination with Figure 2 and Figure 3 as shown, the second lens unit 102 can move toward the image side along the optical axis L, that is, when moving away from the first lens unit 101, the distance between the second lens unit 102 and the first lens unit 101 on the optical axis L is increased, the focal length of the entire lens assembly 10 is decreased, the magnification of the lens assembly 10 is increased, enabling the lens assembly 10 to achieve the macro function and realizing the switching of the lens assembly 10 from the infinite far state to the macro state.

[0148] When the lens assembly 10 is in the macro state, the lens assembly 10 can be used to shoot nearby scenes, such as in shooting scenarios of small objects such as flowers, flying birds, insects and fish. Referring to Figure 3 as shown, in the lens assembly 10, the second lens unit 102 is arranged closer to the image sensor 20 and the filter 30 and farther away from the first lens unit 101. The large aperture design of the lens assembly 10 can effectively increase the light input amount in the macro state, improve the resolution of the lens assembly 10, facilitate realizing the macro shooting function with high magnification and resolution, enable the image captured in the macro state to better display details, enrich the imaging effect, and ensure high-definition imaging in the near-distance shooting scenario.

[0149] It can be understood that the movement of the second lens unit 102 can change the focal length of the lens assembly 10, and the focusing function of the lens assembly 10 can also be realized by the movement of the second lens unit, which further facilitates realizing high imaging quality.

[0150] To realize the movement of the second lens unit 102, exemplarily, the camera module 110 may further include a lens driving structure (not shown in the figure). For example, the lens driving structure may be a driving chip, a driving motor, etc. The lens driving structure can be connected to the second lens unit 102, and the lens of the second lens unit 102 can be driven to move along the optical axis through the lens driving structure, realizing the switching of the lens assembly 10 between the infinite far state and the macro state.

[0151] In the embodiment of the present application, there is no restriction on the movement trajectory of the lens in the second lens unit 102. For example, the lens of the second lens unit 102 can move linearly along the optical axis, or the lens of the second lens unit 102 can also move relatively along the optical axis while rotating around the optical axis.

[0152] It should be noted that when the second lens unit 102 includes multiple lenses, there is no limitation on the movement of all the lenses in the second lens unit 102. For example, all the lenses of the second lens unit 102 can be used as a whole, and the lens driving structure can drive the second lens unit 102 to move along the optical axis.

[0153] Alternatively, there may be multiple lens driving structures, one lens driving structure may be connected and cooperated with some lenses in the second lens unit 102, and multiple lens driving structures may respectively drive the corresponding parts of the lenses to move along the optical axis, thereby enabling all lenses of the second lens unit 102 to move along the optical axis.

[0154] Taking a mobile phone as an example, the scene examples of the camera module 110 realizing the telephoto and macro shooting functions are described. For example, in a possible example, when the user turns on the shooting function of the mobile phone (such as by clicking to open the camera application on the display interface of the mobile phone), and switches to the telephoto mode for shooting (such as by selecting the telephoto mode on the display interface), the lens assembly 10 is in an infinite state, and the lens assembly 10 can achieve high-quality shooting of distant scenes. When the user switches from the telephoto mode to the macro mode for shooting (such as by selecting the macro mode on the display interface), the lens driving structure can drive the second lens unit 102 to move along the optical axis toward the image side, so that the lens assembly 10 is in a macro state, and the lens assembly 10 can achieve high-quality shooting of nearby scenes.

[0155] Accordingly, when the user turns on the shooting function of the mobile phone and switches to the macro mode for shooting, the lens assembly 10 is in the macro state, and the lens assembly 10 can achieve high-quality shooting of nearby scenes. When the user switches from the macro mode to the telephoto mode for shooting, the lens driving structure can drive the second lens unit 102 to move along the optical axis toward the object side, so that the lens assembly 10 is in the infinite state, and the lens assembly 10 can achieve high-quality shooting of distant scenes.

[0156] Alternatively, in another possible example, the camera module 110 can also implement automatic selection of the shooting mode. For example, when the user turns on the shooting function of the mobile phone to take a photo, the camera module 110 can determine the applicable shooting mode according to the current imaging effect of the image sensor 20. For example, if the camera module 110 determines that the current scene is suitable for telephoto shooting, and the lens assembly 10 is currently in the macro state, the lens driving structure can drive the second lens unit 102 to move along the optical axis toward the object side, so that the lens assembly 10 is in the infinity state.

[0157] Correspondingly, when the camera module 110 determines that the current scene is suitable for macro shooting, and the lens assembly 10 is currently in the infinity state, the lens driving structure can drive the second lens unit 102 to move along the optical axis toward the image side, so that the lens assembly 10 is in the macro state.

[0158] In the embodiment of the present application, when the lens assembly 10 is in the infinity state, the aperture number is F#1, and the range of F#1 can be 1.0 < F#1 < 2.5. The aperture value of the lens assembly 10 is small, with the characteristic of a large aperture, ensuring that the lens assembly 10 has a high light input, and can better achieve the telephoto function, ensuring high-quality imaging in the long-distance shooting scene.

[0159] When the lens assembly 10 is in the macro state, the aperture number is F#2, and the range of F#2 can be 1.0 < F#2 < 3. The aperture value is very small and is close to the aperture value in the infinity state, significantly improving the resolution of the lens assembly 10, and can better achieve the macro function, achieving high-definition imaging in the close-up shooting scene.

[0160] When the lens assembly 10 is in the macro state, the magnification is Mag, where the magnification Mag refers to the ratio of the imaging length to the physical length. The range of the magnification Mag of the lens assembly 10 can be 0.15x < Mag < 0.5x, with a high magnification, which can better meet the needs of the close-up shooting scene, and further improve the imaging quality and effect of the lens assembly 10 in the close-up macro shooting scene.

[0161] Taking the total optical length of the lens assembly 10 as TTL, it can be understood that the total optical length TTL of the lens assembly 10 can be the distance from the first lens 11 to the imaging surface of the image sensor 20 on the optical axis L. The total optical length when the lens assembly 10 is in the infinity state is the same as the total optical length when the lens assembly 10 is in the macro state.

[0162] When the focal length of the lens module 10 in the macro state is EFL2, the ratio range of the focal length EFL2 of the lens module 10 in the macro state to the total optical length TTL of the lens module 10 can be 0.15 < |EFL2 / TTL| < 0.95. The lens module 10 has a smaller focal length in the macro state, which also makes the total optical length TTL of the lens module 10 smaller. The lens module 10 can achieve a small volume design, which is beneficial to meeting the thinning design requirements of the camera module and the electronic device.

[0163] The ratio range of the focal length EFL1 of the lens module 10 in the infinity state to the focal length EFL2 of the lens module 10 in the macro state can be 1.1 < EFL1 / EFL2 < 3.2. Under the condition that the lens module 10 has better telephoto characteristics in the long-distance shooting scenario, it can ensure that the lens module 10 has a larger magnification in the macro state, which is beneficial to achieving high-quality imaging in the long-distance shooting scenario and the near-field macro shooting effect with a high magnification.

[0164] When the focal length of the first lens unit 101 is G1, the ratio range of the focal length G1 of the first lens unit 101 to the focal length EFL1 of the lens module 10 in the infinity state can be 0.1 < |G1 / EFL1| < 0.9. By reasonably distributing the optical power of the first lens unit 101, under the condition that the lens module 10 has telephoto characteristics, the first lens unit 101 has a larger refractive power, which is beneficial to increasing the aperture of the lens module 10 and achieving high-quality imaging of the lens module 10 in the long-distance shooting scenario.

[0165] When the focal length of the second lens unit 102 is G2, the ratio range of the focal length G2 of the second lens unit 102 to the focal length EFL1 of the lens module 10 in the infinity state can be 0.1 < |G2 / EFL1| < 0.9. By reasonably distributing the optical power of the second lens unit 102, under the condition that the lens module 10 has telephoto characteristics, the second lens unit 102 also has a larger refractive power, which is also beneficial to increasing the aperture of the lens module 10 and achieving high-quality imaging of the lens module 10 in the long-distance shooting scenario.

[0166] In the embodiment of the present application, the lenses included in the first lens unit 101 and the second lens unit 102 can both be aspherical lenses. For example, the lens can be an aspherical lens. The aspherical lens can reduce or eliminate the spherical aberration and distortion aberration introduced by the spherical lens, which can further contribute to achieving the large-aperture performance of the lens module 10, and at the same time is also beneficial to reducing the total length of the lens module 10.

[0167] The refractive index of the first lens 11 is Nd1, and the range of the refractive index Nd1 of the first lens 11 can be: 1.4<Nd1<1.85. The first lens 11 has a relatively low refractive index, which can effectively improve the image quality and help increase the aperture of the lens assembly 10 to improve the image quality.

[0168] The molding material of the first lens 11 can be plastic or glass, that is, the first lens 11 can be a plastic lens or a glass lens, both of which have relatively low costs, which is beneficial to reducing the cost of the lens assembly 10, and have high design flexibility, which is convenient for promotion and production.

[0169] The molding materials of the remaining lenses in the first lens unit 101 and the second lens unit 102 may also be plastic or glass. For example, some lenses are plastic lenses, and some lenses are glass lenses.

[0170] The shape of each lens in the first lens unit 101 and the second lens unit 102 can be circular or elliptical, which has a wide range of applications and is easy to produce.

[0171] Alternatively, in some other examples, the shape of the lens may be a racetrack circle. For example, a circular (or elliptical) lens may be cut by ICUT cutting, and the edges of the circular lens on opposite sides are cut off, so that the peripheral side of the lens includes two opposite arc-shaped side walls and two opposite plane side walls, and the overall shape of the lens is a racetrack circle. Compared with a circular lens, the size of the lens can be reduced, the space occupied by the lens can be reduced, and the small volume design of the lens assembly 10 and the camera module 110 can be realized.

[0172] Alternatively, in some other examples, the shape of the lens may also be square. For example, a circular (or elliptical) lens may be cut by SCUT cutting, and the peripheral edge of the circular lens may be cut to make the lens as a whole square, and the peripheral side of the lens includes four plane side walls. The size of the lens can also be reduced.

[0173] Of course, in some other examples, the shape of the lens may also be other regular or irregular shapes, which may be formed by cutting a circular lens.

[0174] In the embodiment of the present application, there is no limitation on the concave-convex shapes of the image side and the object side of each lens in the lens assembly 10. At least the portion of the image side of the lens corresponding to the optical axis can be a convex surface, or it can also be a concave surface. At least the portion of the object side of the lens corresponding to the optical axis can be a convex surface, or it can also be a concave surface. The specific shape can be selected and set according to the actual matching requirements of the lenses.

[0175] The structure and performance of the lens assembly provided in the present application are described below in conjunction with specific embodiments.

[0176] Embodiment 1

[0177] Figure 4 A schematic diagram of the simulation structure of a camera module provided in Example 1 of the present application when the lens assembly is in an infinite distance state.

[0178] In the present application examples, see Figure 4 As shown, the number of lenses with optical power included in the lens assembly 10 is 6, wherein the first lens unit 101 may include 3 lenses with optical power, such as the first lens 11, the second lens 12 and the third lens 13, and the second lens unit 102 may include 3 lenses with optical power, such as the fourth lens 14, the fifth lens 15 and the sixth lens 16. Along the optical axis L, from the object side to the image side, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15 and the sixth lens 16 are arranged in sequence.

[0179] That is, in the camera module 110, along the direction of the optical axis L, from the object side to the image side, the aperture 103, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, the sixth lens 16, the filter 30 and the image sensor 20 are arranged in sequence. The light entering the camera module 110 passes through the lens assembly 10 and the filter 30 in the above order and irradiates the image sensor 20, and finally forms an image on the photosensitive surface of the image sensor 20.

[0180] The first lens unit 101 has positive optical power, and the second lens unit 102 has negative optical power.

[0181] Specifically, the first lens 11 may have positive optical power, at least a portion of the object side surface of the first lens 11 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the first lens 11 corresponding to the optical axis may be a convex surface.

[0182] The second lens 12 may have negative optical power, and at least a portion of the object side surface of the second lens 12 corresponding to the optical axis may be a concave surface, and at least a portion of the image side surface of the second lens 12 corresponding to the optical axis may be a convex surface.

[0183] The third lens 13 may have positive optical power, and at least a portion of the object side surface of the third lens 13 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the third lens 13 corresponding to the optical axis may be a concave surface.

[0184] The fourth lens 14 may have negative optical power, and at least a portion of the object side surface of the fourth lens 14 corresponding to the optical axis may be a concave surface, and at least a portion of the image side surface of the fourth lens 14 corresponding to the optical axis may be a convex surface.

[0185] The fifth lens 15 may have positive power, and at least a portion of the object side surface of the fifth lens 15 corresponding to the optical axis may be a concave surface, and at least a portion of the image side surface of the fifth lens 15 corresponding to the optical axis may be a concave surface.

[0186] The sixth lens 16 may have negative optical power, and at least a portion of the object side surface of the sixth lens 16 corresponding to the optical axis may be a concave surface, and at least a portion of the image side surface of the sixth lens 16 corresponding to the optical axis may be a concave surface.

[0187] When the lens assembly 10 is in the infinite state, see Figure 4 As shown, the second lens unit 102 is closer to the first lens unit 101, and is relatively far from the filter 30 and the image sensor 20. When the lens assembly 10 switches from the infinity state to the macro state, the second lens unit 102 moves along the optical axis L toward the image side.

[0188] Figure 5 A schematic diagram of the simulation structure of a lens assembly in a camera module provided in Example 1 of the present application when the lens assembly is in a macro state.

[0189] See also Figure 5 As shown, when the lens assembly 10 is in the macro state, the second lens unit 12 is closer to the filter 30 and the image sensor 20 , and is relatively far away from the first lens unit 101 .

[0190] Among them, the curvature radius R11 of the object side surface of the first lens 11 is 5.57, the curvature radius R12 of the image side surface of the first lens 11 is 33.98, the focal length f1 of the first lens 11 is 11.91, and the first lens 11 satisfies |(R11+R12) / f1|=3.32.

[0191] The focal length EFL1 of the lens assembly 10 when in the infinite state is 14.1, and the ratio of the focal length f1 of the first lens 11 to the focal length EFL1 of the lens assembly 10 when in the infinite state is f1 / EFL1=0.83.

[0192] The refractive index of the first lens 11 is Nd1=1.547.

[0193] When the lens assembly 10 is in the infinity state, the aperture number F#1 is 2.03. When the lens assembly 10 is in the macro state, the aperture number F#2 is 2.02.

[0194] The magnification of the lens assembly 10 when in the macro state is Mag=0.315x.

[0195] The focal length G1 of the first lens unit 101 is 7.38, and the ratio of the focal length G1 of the first lens unit 101 to the focal length EFL1 of the lens assembly 10 when it is in an infinite state is |G1 / EFL1|=0.52.

[0196] The focal length G2 of the second lens unit 102 is -6.02, and the ratio of the focal length G2 of the second lens unit 102 to the focal length EFL1 of the lens assembly 10 at infinity |G2 / EFL1| is 0.43.

[0197] The focal length EFL2 of the lens assembly 10 when in the macro state is 8.46, the total optical length TTL of the lens assembly 10 is 14.72, and the ratio of the focal length EFL2 of the lens assembly 10 when in the macro state to the total optical length TTL of the lens assembly 10 |EFL2 / TTL| is 0.57.

[0198] The ratio of the focal length EFL1 when the lens assembly 10 is in the infinite state to the focal length EFL2 when the lens assembly 10 is in the macro state is EFL1 / EFL2 = 1.67.

[0199] The following is an example of the optical parameters of each lens in this embodiment.

[0200] Table 1.1 shows the optical parameters of each lens in a camera module provided in Example 1 of the present application.

[0201]

[0202]

[0203] Among them, L1 is the first lens 11, L2 is the second lens 12, L3 is the third lens 13, L4 is the fourth lens 14, L5 is the fifth lens 15, L6 is the sixth lens 16, and IR is the filter 30.

[0204] S0 is the aperture 103, S1 and S2 are respectively the object side and image side of the first lens 11, S3 and S4 are respectively the object side and image side of the second lens 12, S5 and S6 are respectively the object side and image side of the third lens 13, S7 and S8 are respectively the object side and image side of the fourth lens 14, S9 and S10 are respectively the object side and image side of the fifth lens 15, S11 and S12 are respectively the object side and image side of the sixth lens 16, and S13 and S14 are respectively the object side and image side of the filter 30.

[0205] The thickness is the thickness of the optical element along the optical axis or the thickness of the air gap between the optical elements. The thickness corresponding to the row where the aperture 103 is located is the distance from the aperture 103 to the object side of the first lens 11 along the optical axis, the thickness corresponding to the row where the object side of the first lens 11 is the thickness of the first lens 11 along the optical axis, the thickness corresponding to the row where the image side of the first lens 11 is the distance from the image side of the first lens 11 to the object side of the second lens 12 along the optical axis, and so on.

[0206] Material refers to the refractive index and Abbe number of the lens. It should be noted that the material values ​​in Table 1 are the counting method of the refractive index and the Abbe number. The product of the part before the decimal point 0.000 in the material value in the table plus 1.000 is the refractive index of the lens, and the product of the part after the decimal point and 0.01 is the Abbe number of the lens. For example, taking the first lens 11 (L1) as an example, the material value of the first lens 11 is 547.528, then the refractive index of the first lens 11 is 1.547, and the Abbe number of the first lens 11 is 52.8, and so on.

[0207] Y semi-aperture refers to the radius of the lens.

[0208] Table 1.2 shows the aspheric coefficients of each lens in a lens assembly provided in Example 1 of the present application.

[0209]

[0210]

[0211] As can be seen from Table 1.2, each lens in the lens assembly 10 is an aspherical lens, that is, the lens assembly 10 includes 12 aspherical surfaces. The aspherical surface type Z of each lens in the lens assembly 10 can be calculated by the following aspherical surface formula:

[0212]

[0213] Among them, parameter c=1 / R, R is the radius of curvature, r is the distance from a point on the optical surface to the optical axis, Z is the aspheric surface vector height of the point along the optical axis, k is the quadratic surface coefficient of the surface, i is the aspheric coefficient term, in this embodiment i is 30, and Ai is the aspheric coefficient.

[0214] Table 1.3 shows the focal lengths of the lenses and lens units in a lens assembly provided in Example 1 of the present application.

[0215] f1 / mm f2 / mm f3 / mm f4 / mm f5 / mm f6 / mm 11.91 -8.23 5.31 -10.73 26.26 -10.68

[0216] Among them, f1, f2, f3, f4, f5, and f6 are the focal lengths of the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, and the sixth lens 16, respectively.

[0217] The lens assembly 10 adopts the above-mentioned two lens unit frameworks and reasonably allocates the optical focal length of the two lens units and the first lens. With the combination of the number of lenses and the focal length, thickness, refractive index, Abbe number, etc. of each lens, it is possible to achieve the characteristics of large aperture, small size, low cost and high resolution of the lens assembly 10. The optical parameters of the lens assembly 10 composed of the above-mentioned lenses can be shown in the following Table 1.4.

[0218] Table 1.4 shows the optical parameters of a lens assembly provided in Example 1 of the present application.

[0219]

[0220] It can be seen from Table 1.4 that the lens assembly 10 provided in Example 1 of the present application has the characteristics of large aperture and small total optical length, can realize the long-focus telephoto function, ensure high-quality imaging in scenes such as long-range shooting, and can also realize the macro function of high magnification and resolution, ensure high-definition imaging in scenes such as close-up shooting.

[0221] Figure 6a This is a modulation transfer function curve diagram of a lens assembly provided in Example 1 of the present application when it is in an infinite distance state. Figure 6b This is a modulation transfer function curve diagram of a lens assembly provided in Embodiment 1 of the present application when it is in a macro state.

[0222] in, Figure 6a and Figure 6b The horizontal axis represents different frequencies, the vertical axis represents modulation contrast, the solid line in the figure represents the sagittal field of view, the dotted line in the figure represents the meridian field of view, and the diff.limit in the figure represents the modulation transfer function of the imaging system for an infinitesimal object point. The closer to the diff.limit curve, the better the imaging quality. Figure 6a and Figure 6b It can be seen that the lens assembly provided in this embodiment can achieve high-quality imaging in both the infinite distance state and the macro state.

[0223] Embodiment 2

[0224] Figure 7 A schematic diagram of the simulation structure of a camera module provided in Embodiment 2 of the present application when the lens assembly is in an infinite distance state.

[0225] In the present application examples, see Figure 7As shown, the number of lenses with optical power included in the lens assembly 10 is 6, wherein the first lens unit 101 may include 3 lenses with optical power, such as the first lens 11, the second lens 12 and the third lens 13, and the second lens unit 102 may include 3 lenses with optical power, such as the fourth lens 14, the fifth lens 15 and the sixth lens 16. Along the optical axis L, from the object side to the image side, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15 and the sixth lens 16 are arranged in sequence.

[0226] That is, in the camera module 110, along the direction of the optical axis L, from the object side to the image side, the aperture 103, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, the sixth lens 16, the filter 30 and the image sensor 20 are arranged in sequence. The light entering the camera module 110 passes through the lens assembly 10 and the filter 30 in the above order and irradiates the image sensor 20, and finally forms an image on the photosensitive surface of the image sensor 20.

[0227] The first lens unit 101 has positive optical power, and the second lens unit 102 has negative optical power.

[0228] Specifically, the first lens 11 may have positive optical power, at least a portion of the object side surface of the first lens 11 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the first lens 11 corresponding to the optical axis may be a concave surface.

[0229] The second lens 12 may have negative optical power, and at least a portion of the object side surface of the second lens 12 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the second lens 12 corresponding to the optical axis may be a convex surface.

[0230] The third lens 13 may have positive optical power, and at least a portion of the object side surface of the third lens 13 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the third lens 13 corresponding to the optical axis may be a concave surface.

[0231] The fourth lens 14 may have negative optical power, and at least a portion of the object side surface of the fourth lens 14 corresponding to the optical axis may be a concave surface, and at least a portion of the image side surface of the fourth lens 14 corresponding to the optical axis may be a concave surface.

[0232] The fifth lens 15 may have positive power, and at least a portion of the object side surface of the fifth lens 15 corresponding to the optical axis may be a concave surface, and at least a portion of the image side surface of the fifth lens 15 corresponding to the optical axis may be a concave surface.

[0233] The sixth lens 16 may have negative optical power, and at least a portion of the object side surface of the sixth lens 16 corresponding to the optical axis may be a concave surface, and at least a portion of the image side surface of the sixth lens 16 corresponding to the optical axis may be a concave surface.

[0234] When the lens assembly 10 is in the infinite state, see Figure 7 As shown, the second lens unit 102 is closer to the first lens unit 101, and is relatively far from the filter 30 and the image sensor 20. When the lens assembly 10 switches from the infinity state to the macro state, the second lens unit 102 moves along the optical axis L toward the image side.

[0235] Figure 8 A schematic diagram of the simulation structure of a lens assembly in a camera module provided in Embodiment 2 of the present application when the lens assembly is in a macro state.

[0236] See also Figure 8 As shown, when the lens assembly 10 is in the macro state, the second lens unit 12 is closer to the filter 30 and the image sensor 20 , and is relatively far away from the first lens unit 101 .

[0237] Among them, the curvature radius R11 of the object side surface of the first lens 11 is 7.91, the curvature radius R12 of the image side surface of the first lens 11 is -62.18, the focal length f1 of the first lens 11 is 12.96, and the first lens 11 satisfies |(R11+R12) / f1|=4.2.

[0238] The focal length EFL1 of the lens assembly 10 when it is in the infinite state is 15.2, and the ratio of the focal length f1 of the first lens 11 to the focal length EFL1 of the lens assembly 10 when it is in the infinite state is f1 / EFL1=0.85.

[0239] The refractive index of the first lens 11 is Nd1=1.544.

[0240] The aperture number F#1 when the lens assembly 10 is in the infinity state is 1.98. The aperture number F#2 when the lens assembly 10 is in the macro state is 1.96.

[0241] The magnification of the lens assembly 10 when in the macro state is Mag=0.3x.

[0242] The focal length G1 of the first lens unit 101 is 8.27, and the ratio of the focal length G1 of the first lens unit 101 to the focal length EFL1 of the lens assembly 10 when it is in an infinite state is |G1 / EFL1|=0.54.

[0243] The focal length G2 of the second lens unit 102 is -7.98, and the ratio of the focal length G2 of the second lens unit 102 to the focal length EFL1 of the lens assembly 10 at infinity |G2 / EFL1| is 0.53.

[0244] The focal length EFL2 of the lens assembly 10 when in the macro state is 9.7, the total optical length TTL of the lens assembly 10 is 17.3, and the ratio of the focal length EFL2 of the lens assembly 10 when in the macro state to the total optical length TTL of the lens assembly 10 is |EFL2 / TTL|=0.56.

[0245] The ratio of the focal length EFL1 when the lens assembly 10 is in the infinity state to the focal length EFL2 when the lens assembly 10 is in the macro state is EFL1 / EFL2 = 1.57.

[0246] The following is an example of the optical parameters of each lens in this embodiment.

[0247] Table 2.1 shows the optical parameters of each lens in a camera module provided in Example 2 of the present application.

[0248]

[0249] Among them, L1 is the first lens 11, L2 is the second lens 12, L3 is the third lens 13, L4 is the fourth lens 14, L5 is the fifth lens 15, L6 is the sixth lens 16, and IR is the filter 30.

[0250] The specific illustration of S0-S14 can be found in the first embodiment, which will not be described in detail in the embodiment.

[0251] The meanings of parameters such as the radius of curvature, thickness, material, and Y semi-aperture can also be found in Example 1, and will not be repeated in this embodiment.

[0252] Table 2.2 shows the aspheric coefficients of each lens in a lens assembly provided in Example 2 of the present application.

[0253] Curvature radius R Cone coefficient K A4 A6 A8 A10 A12 A14 S1 7.91 0 3.04E-04 4.57E-05 -4.76E-05 1.33E-05 -2.05E-06 2.00E-07 S2 -62.18 0 1.78E-03 -2.75E-04 -6.44E-05 4.59E-05 -1.09E-05 1.45E-06 S3 6.78 0 -1.18E-02 1.54E-04 -2.84E-04 3.71E-04 -1.68E-04 4.80E-05 S4 3.04 -1 -1.61E-02 -2.06E-04 4.49E-04 5.69E-05 -7.46E-05 2.51E-05 S5 6.74 0 -2.71E-03 -6.28E-04 2.49E-04 -1.03E-04 4.58E-05 -1.43E-05 S6 -5.89 0 -1.99E-04 3.37E-04 -3.08E-04 1.48E-04 -4.57E-05 9.87E-06 S7 -6.59 0 3.77E-02 -4.84E-03 -5.69E-05 -1.48E-03 2.66E-03 -2.20E-03 S8 -13.00 0 4.80E-02 -3.72E-03 -3.07E-03 2.09E-03 -6.23E-04 5.69E-05 S9 -10.31 0 1.07E-02 4.00E-03 -2.35E-02 4.15E-02 -4.74E-02 3.76E-02 S10 -5.41 0 -2.65E-04 -2.81E-03 3.32E-04 3.82E-04 -3.86E-04 1.95E-04 S11 -3.62 0 -2.69E-03 -1.73E-03 5.59E-04 1.12E-05 -2.13E-05 3.26E-06 S12 -28.52 0 2.47E-03 -1.69E-02 2.56E-02 -2.48E-02 1.63E-02 -7.57E-03 A16 A18 A20 A22 A24 A26 A28 A30 S1 -1.36E-08 7.11E-10 -3.05E-11 9.34E-13 -1.38E-14 0.00E+00 0.00E+00 0.00E+00 S2 -1.19E-07 5.90E-09 -1.65E-10 1.97E-12 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S3 -1.00E-05 1.58E-06 -1.89E-07 1.66E-08 -1.04E-09 4.31E-11 -1.07E-12 1.21E-14 S4 -5.40E-06 8.55E-07 -1.03E-07 9.12E-09 -5.73E-10 2.38E-11 -5.84E-13 6.33E-15 S5 2.98E-06 -4.24E-07 4.20E-08 -2.91E-09 1.41E-10 -4.56E-12 9.13E-14 -8.70E-16 S6 -1.55E-06 1.80E-07 -1.54E-08 9.57E-10 -4.14E-11 1.16E-12 -1.79E-14 1.05E-16 S7 1.15E-03 -4.16E-04 1.07E-04 -1.95E-05 2.48E-06 -2.09E-07 1.04E-08 -2.35E-10 S8 2.18E-05 -8.07E-06 1.07E-06 -5.36E-08 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S9 -2.13E-02 8.75E-03 -2.61E-03 5.62E-04 -8.49E-05 8.54E-06 -5.14E-07 1.40E-08 S10 -6.04E-05 1.19E-05 -1.44E-06 9.91E-08 -2.94E-09 0.00E+00 0.00E+00 0.00E+00 S11 -2.37E-07 7.58E-09 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S12 2.52E-03 -6.10E-04 1.07E-04 -1.35E-05 1.19E-06 -6.97E-08 2.43E-09 -3.81E-11

[0254] As can be seen from Table 2.2, each lens in the lens assembly 10 is an aspherical lens, that is, the lens assembly 10 includes 12 aspherical surfaces. The aspherical surface type Z of each lens in the lens assembly 10 can be calculated by the following aspherical surface formula:

[0255]

[0256] Among them, parameter c=1 / R, R is the radius of curvature, r is the distance from a point on the optical surface to the optical axis, Z is the aspheric surface vector height of the point along the optical axis, k is the quadratic surface coefficient of the surface, i is the aspheric coefficient term, in this embodiment i is 30, and Ai is the aspheric coefficient.

[0257] Table 2.3 shows the focal lengths of each lens and lens unit in a lens assembly provided in Example 2 of the present application.

[0258] f1 / mm f2 / mm f3 / mm f4 / mm f5 / mm f6 / mm 12.96 -9.38 6.25 -25.30 18.31 -7.78

[0259] Among them, f1, f2, f3, f4, f5, and f6 are the focal lengths of the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, and the sixth lens 16, respectively.

[0260] The lens assembly 10 adopts the above-mentioned two lens unit frameworks and reasonably allocates the optical focal length of the two lens units and the first lens. With the combination of the number of lenses and the focal length, thickness, refractive index, Abbe number, etc. of each lens, it is possible to achieve the characteristics of large aperture, small size, low cost and high resolution of the lens assembly 10. The optical parameters of the lens assembly 10 composed of the above-mentioned lenses can be shown in the following Table 2.4.

[0261] Table 2.4 shows the optical parameters of a lens assembly provided in Example 2 of the present application.

[0262]

[0263] It can be seen from Table 2.4 that the lens assembly 10 provided in Example 2 of the present application has the characteristics of large aperture and small total optical length, which can realize the long-focus telephoto function, ensure high-quality imaging in scenes such as long-range shooting, and can also realize the macro function with high magnification and resolution, ensure high-definition imaging in scenes such as close-up shooting.

[0264] Figure 9a This is a modulation transfer function curve diagram of a lens assembly provided in Example 2 of the present application when it is in an infinite distance state. Figure 9b This is a modulation transfer function curve diagram of a lens assembly provided in Embodiment 2 of the present application when it is in a macro state.

[0265] in, Figure 9a and Figure 9b The horizontal axis represents different frequencies, the vertical axis represents modulation contrast, the solid line in the figure represents the sagittal field of view, the dotted line in the figure represents the meridian field of view, and the diff.limit in the figure represents the modulation transfer function of the imaging system for an infinitesimal object point. The closer to the diff.limit curve, the better the imaging quality. Figure 9a and Figure 9b It can be seen that the lens assembly provided in this embodiment can achieve high-quality imaging in both the infinite distance state and the macro state.

[0266] Embodiment 3

[0267] Fig.10 A schematic diagram of the simulation structure of a camera module provided in Example 3 of the present application when the lens assembly is in an infinite distance state.

[0268] In the present application examples, see Fig.10As shown, the number of lenses with optical power included in the lens assembly 10 is 6, wherein the first lens unit 101 may include 3 lenses with optical power, such as the first lens 11, the second lens 12 and the third lens 13, and the second lens unit 102 may include 3 lenses with optical power, such as the fourth lens 14, the fifth lens 15 and the sixth lens 16. Along the optical axis L, from the object side to the image side, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15 and the sixth lens 16 are arranged in sequence.

[0269] That is, in the camera module 110, along the direction of the optical axis L, from the object side to the image side, the aperture 103, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, the sixth lens 16, the filter 30 and the image sensor 20 are arranged in sequence. The light entering the camera module 110 passes through the lens assembly 10 and the filter 30 in the above order and irradiates the image sensor 20, and finally forms an image on the photosensitive surface of the image sensor 20.

[0270] The first lens unit 101 has positive optical power, and the second lens unit 102 has negative optical power.

[0271] Specifically, the first lens 11 may have positive power, at least a portion of the object side surface of the first lens 11 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the first lens 11 corresponding to the optical axis may be a convex surface.

[0272] The second lens 12 may have negative optical power, and at least a portion of the object side surface of the second lens 12 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the second lens 12 corresponding to the optical axis may be a convex surface.

[0273] The third lens 13 may have positive optical power, and at least a portion of the object side surface of the third lens 13 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the third lens 13 corresponding to the optical axis may be a concave surface.

[0274] The fourth lens 14 may have negative optical power, and at least a portion of the object side surface of the fourth lens 14 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the fourth lens 14 corresponding to the optical axis may be a convex surface.

[0275] The fifth lens 15 may have positive power, and at least a portion of the object side surface of the fifth lens 15 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the fifth lens 15 corresponding to the optical axis may be a convex surface.

[0276] The sixth lens 16 may have negative optical power, and at least a portion of the object side surface of the sixth lens 16 corresponding to the optical axis may be a concave surface, and at least a portion of the image side surface of the sixth lens 16 corresponding to the optical axis may be a concave surface.

[0277] When the lens assembly 10 is in the infinite state, see Fig.10 As shown, the second lens unit 102 is closer to the first lens unit 101, and is relatively far from the filter 30 and the image sensor 20. When the lens assembly 10 switches from the infinity state to the macro state, the second lens unit 102 moves along the optical axis L toward the image side.

[0278] Fig.11 This is a schematic diagram of the simulation structure of a lens assembly in a camera module provided in Example 3 of the present application when it is in a macro state.

[0279] See also Fig.11 As shown, when the lens assembly 10 is in the macro state, the second lens unit 12 is closer to the filter 30 and the image sensor 20 , and is relatively far away from the first lens unit 101 .

[0280] Among them, the curvature radius R11 of the object side surface of the first lens 11 is 7.23, the curvature radius R12 of the image side surface of the first lens 11 is 160.58, the focal length f1 of the first lens 11 is 13.80, and the first lens 11 satisfies |(R11+R12) / f1|=12.2.

[0281] The focal length EFL1 of the lens assembly 10 when it is in the infinite state is 15.1, and the ratio of the focal length f1 of the first lens 11 to the focal length EFL1 of the lens assembly 10 when it is in the infinite state is f1 / EFL1=0.88.

[0282] The refractive index of the first lens 11 is Nd1=1.544.

[0283] The aperture number F#1 when the lens assembly 10 is in the infinity state is 1.98. The aperture number F#2 when the lens assembly 10 is in the macro state is 2.03.

[0284] The magnification of the lens assembly 10 when in the macro state is Mag=0.3x.

[0285] The focal length G1 of the first lens unit 101 is 8.51, and the ratio of the focal length G1 of the first lens unit 101 to the focal length EFL1 of the lens assembly 10 at infinity |G1 / EFL1| is 0.56.

[0286] The focal length G2 of the second lens unit 102 is -9.28, and the ratio of the focal length G2 of the second lens unit 102 to the focal length EFL1 of the lens assembly 10 at infinity |G2 / EFL1| is 0.61.

[0287] The focal length EFL2 of the lens assembly 10 when in the macro state is 9.96, the total optical length TTL of the lens assembly 10 is 17.12, and the ratio of the focal length EFL2 of the lens assembly 10 when in the macro state to the total optical length TTL of the lens assembly 10 |EFL2 / TTL| is 0.58.

[0288] The ratio of the focal length EFL1 when the lens assembly 10 is in the infinite state to the focal length EFL2 when the lens assembly 10 is in the macro state is EFL1 / EFL2 = 1.52.

[0289] The following is an example of the optical parameters of each lens in this embodiment.

[0290] Table 3.1 shows the optical parameters of each lens in a camera module provided in Example 3 of the present application.

[0291]

[0292] Among them, L1 is the first lens 11, L2 is the second lens 12, L3 is the third lens 13, L4 is the fourth lens 14, L5 is the fifth lens 15, L6 is the sixth lens 16, and IR is the filter 30.

[0293] The specific illustration of S0-S14 can be found in the first embodiment, which will not be described in detail in the embodiment.

[0294] The meanings of parameters such as the radius of curvature, thickness, material, and Y semi-aperture can also be found in Example 1, and will not be repeated in this embodiment.

[0295] Table 3.2 shows the aspheric coefficients of each lens in a lens assembly provided in Example 3 of the present application.

[0296]

[0297]

[0298] As can be seen from Table 3.2, each lens in the lens assembly 10 is an aspherical lens, that is, the lens assembly 10 includes 12 aspherical surfaces. The aspherical surface type Z of each lens in the lens assembly 10 can be calculated by the following aspherical surface formula:

[0299]

[0300] Among them, parameter c=1 / R, R is the radius of curvature, r is the distance from a point on the optical surface to the optical axis, Z is the aspheric surface vector height of the point along the optical axis, k is the quadratic surface coefficient of the surface, i is the aspheric coefficient term, in this embodiment i is 30, and Ai is the aspheric coefficient.

[0301] Table 3.3 shows the focal lengths of each lens and lens unit in a lens assembly provided in Example 3 of the present application.

[0302] f1 / mm f2 / mm f3 / mm f4 / mm f5 / mm f6 / mm 13.80 -11.95 7.00 -8.06 20.61 -38.34

[0303] Among them, f1, f2, f3, f4, f5, and f6 are the focal lengths of the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, and the sixth lens 16, respectively.

[0304] The lens assembly 10 adopts the above-mentioned two lens unit frameworks and reasonably allocates the optical focal length of the two lens units and the first lens. By matching the number of lenses and the focal length, thickness, refractive index, Abbe number, etc. of each lens, it is possible to achieve the characteristics of large aperture, small size, low cost and high resolution of the lens assembly 10. The optical parameters of the lens assembly 10 composed of the above-mentioned lenses can be shown in the following Table 3.4.

[0305] Table 3.4 shows the optical parameters of a lens assembly provided in Example 3 of the present application.

[0306]

[0307] It can be seen from Table 3.4 that the lens assembly 10 provided in Example 3 of the present application has the characteristics of large aperture and small total optical length, can realize the long-focus telephoto function, ensure high-quality imaging in scenes such as long-range shooting, and can also realize the macro function of high magnification and resolution, ensure high-definition imaging in scenes such as close-up shooting.

[0308] Fig.12a This is a modulation transfer function curve diagram of a lens assembly provided in Example 3 of the present application when it is in an infinite state. Figure 12b This is a modulation transfer function curve diagram of a lens assembly provided in Example 3 of the present application when it is in a macro state.

[0309] in, Fig.12a and Figure 12b The horizontal axis represents different frequencies, the vertical axis represents modulation contrast, the solid line in the figure represents the sagittal field of view, the dotted line in the figure represents the meridian field of view, and the diff.limit in the figure represents the modulation transfer function of the imaging system for an infinitesimal object point. The closer to the diff.limit curve, the better the imaging quality. Fig.12a and Figure 12b It can be seen that the lens assembly provided in this embodiment can achieve high-quality imaging in both the infinite distance state and the macro state.

[0310] Embodiment 4

[0311] Fig.13A schematic diagram of the simulation structure of a camera module provided in Embodiment 4 of the present application when the lens assembly is in an infinite distance state.

[0312] In the present application examples, see Fig.13 As shown, the number of lenses with optical power included in the lens assembly 10 is 6, wherein the first lens unit 101 may include 3 lenses with optical power, such as the first lens 11, the second lens 12 and the third lens 13, and the second lens unit 102 may include 3 lenses with optical power, such as the fourth lens 14, the fifth lens 15 and the sixth lens 16. Along the optical axis L, from the object side to the image side, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15 and the sixth lens 16 are arranged in sequence.

[0313] That is, in the camera module 110, along the direction of the optical axis L, from the object side to the image side, the aperture 103, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, the sixth lens 16, the filter 30 and the image sensor 20 are arranged in sequence. The light entering the camera module 110 passes through the lens assembly 10 and the filter 30 in the above order and irradiates the image sensor 20, and finally forms an image on the photosensitive surface of the image sensor 20.

[0314] The first lens unit 101 has positive optical power, and the second lens unit 102 has negative optical power.

[0315] Specifically, the first lens 11 may have positive power, at least a portion of the object side surface of the first lens 11 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the first lens 11 corresponding to the optical axis may be a convex surface.

[0316] The second lens 12 may have negative optical power, and at least a portion of the object side surface of the second lens 12 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the second lens 12 corresponding to the optical axis may be a convex surface.

[0317] The third lens 13 may have positive optical power, and at least a portion of the object side surface of the third lens 13 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the third lens 13 corresponding to the optical axis may be a concave surface.

[0318] The fourth lens 14 may have negative optical power, and at least a portion of the object side surface of the fourth lens 14 corresponding to the optical axis may be a concave surface, and at least a portion of the image side surface of the fourth lens 14 corresponding to the optical axis may be a convex surface.

[0319] The fifth lens 15 may have positive power, and at least a portion of the object side surface of the fifth lens 15 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the fifth lens 15 corresponding to the optical axis may be a convex surface.

[0320] The sixth lens 16 may have negative optical power, and at least a portion of the object side surface of the sixth lens 16 corresponding to the optical axis may be a concave surface, and at least a portion of the image side surface of the sixth lens 16 corresponding to the optical axis may be a convex surface.

[0321] When the lens assembly 10 is in the infinite state, see Fig.13 As shown, the second lens unit 102 is closer to the first lens unit 101, and is relatively far from the filter 30 and the image sensor 20. When the lens assembly 10 switches from the infinity state to the macro state, the second lens unit 102 moves along the optical axis L toward the image side.

[0322] Fig.14 A schematic diagram of the simulation structure of a lens assembly in a camera module provided in Embodiment 4 of the present application when the lens assembly is in a macro state.

[0323] See also Fig.14 As shown, when the lens assembly 10 is in the macro state, the second lens unit 12 is closer to the filter 30 and the image sensor 20 , and is relatively far away from the first lens unit 101 .

[0324] Among them, the curvature radius R11 of the object side surface of the first lens 11 is 7.59, the curvature radius R12 of the image side surface of the first lens 11 is 88.75, the focal length f1 of the first lens 11 is 15.05, and the first lens 11 satisfies |(R11+R12) / f1|=6.4.

[0325] The focal length EFL1 of the lens assembly 10 when it is in the infinite state is 15.2, and the ratio of the focal length f1 of the first lens 11 to the focal length EFL1 of the lens assembly 10 when it is in the infinite state is f1 / EFL1=0.99.

[0326] The refractive index of the first lens 11 is Nd1=1.544.

[0327] The aperture number F#1 when the lens assembly 10 is in the infinity state is 1.98. The aperture number F#2 when the lens assembly 10 is in the macro state is 2.03.

[0328] The magnification of the lens assembly 10 when in the macro state is Mag=0.3x.

[0329] The focal length G1 of the first lens unit 101 is 8.78, and the ratio of the focal length G1 of the first lens unit 101 to the focal length EFL1 of the lens assembly 10 at infinity |G1 / EFL1| is 0.58.

[0330] The focal length G2 of the second lens unit 102 is -10.07, and the ratio of the focal length G2 of the second lens unit 102 to the focal length EFL1 of the lens assembly 10 at infinity |G2 / EFL1| is 0.66.

[0331] The focal length EFL2 of the lens assembly 10 when in the macro state is 10=10, the total optical length TTL of the lens assembly 10 is 17.26, and the ratio of the focal length EFL2 of the lens assembly 10 when in the macro state to the total optical length TTL of the lens assembly 10 |EFL2 / TTL|=0.58.

[0332] The ratio of the focal length EFL1 when the lens assembly 10 is in the infinite state to the focal length EFL2 when the lens assembly 10 is in the macro state is EFL1 / EFL2 = 1.52.

[0333] The following is an example of the optical parameters of each lens in this embodiment.

[0334] Table 4.1 shows the optical parameters of each lens in a camera module provided in Example 4 of the present application.

[0335]

[0336]

[0337] Among them, L1 is the first lens 11, L2 is the second lens 12, L3 is the third lens 13, L4 is the fourth lens 14, L5 is the fifth lens 15, L6 is the sixth lens 16, and IR is the filter 30.

[0338] The specific illustration of S0-S14 can be found in the first embodiment, which will not be described in detail in the embodiment.

[0339] The meanings of parameters such as the radius of curvature, thickness, material, and Y semi-aperture can also be found in Example 1, and will not be repeated in this embodiment.

[0340] Table 4.2 shows the aspheric coefficients of each lens in a lens assembly provided in Example 4 of the present application.

[0341] Curvature radius R Cone coefficient K A4 A6 A8 A10 A12 A14 S1 7.59 0 3.10E-04 -2.99E-04 1.20E-04 -4.35E-05 1.31E-05 -3.08E-06 S2 88.75 0 1.02E-02 -4.77E-03 1.56E-03 -3.75E-04 6.88E-05 -1.00E-05 S3 11.24 0 1.89E-02 -1.13E-02 4.20E-03 -1.43E-03 4.80E-04 -1.43E-04 S4 5.01 0 1.95E-02 -1.22E-02 3.24E-03 -5.22E-04 1.29E-04 -7.14E-05 S5 7.89 0 7.32E-03 -3.57E-03 6.80E-04 -2.11E-04 1.79E-04 -9.82E-05 S6 -7.49 0 -4.98E-04 1.75E-03 -1.93E-03 1.37E-03 -6.85E-04 2.50E-04 S7 -14.36 0 -4.80E-03 1.28E-02 -9.78E-03 8.44E-03 -6.86E-03 4.41E-03 S8 5.10 0 -2.06E-02 7.45E-03 8.11E-03 -1.29E-02 1.07E-02 -5.99E-03 S9 3.58 0 -1.87E-02 -1.37E-02 1.07E-02 -3.94E-03 8.53E-04 -1.11E-04 S10 11.25 0 7.78E-02 -1.14E-01 6.80E-02 -2.30E-02 4.77E-03 -5.99E-04 S11 -19.33 0 1.08E-01 -1.27E-01 6.96E-02 -1.67E-02 -3.78E-03 5.60E-03 S12 11.50 0 2.23E-02 -3.78E-02 3.68E-02 -2.58E-02 1.34E-02 -5.29E-03 A16 A18 A20 A22 A24 A26 A28 A30 S1 5.35E-07 -6.69E-08 5.91E-09 -3.60E-10 1.43E-11 -3.34E-13 3.49E-15 0.00E+00 S2 1.16E-06 -1.03E-07 6.54E-09 -2.77E-10 6.88E-12 -7.45E-14 0.00E+00 0.00E+00 S3 3.35E-05 -5.82E-06 7.37E-07 -6.67E-08 4.20E-09 -1.75E-10 4.32E-12 -4.78E-14 S4 2.87E-05 -7.26E-06 1.22E-06 -1.38E-07 1.06E-08 -5.29E-10 1.54E-11 -2.00E-13 S5 3.30E-05 -7.37E-06 1.14E-06 -1.23E-07 9.09E-09 -4.39E-10 1.25E-11 -1.59E-13 S6 -6.77E-05 1.36E-05 -1.99E-06 2.12E-07 -1.58E-08 7.85E-10 -2.32E-11 3.08E-13 S7 -2.14E-03 7.73E-04 -2.06E-04 3.97E-05 -5.36E-06 4.81E-07 -2.57E-08 6.14E-10 S8 2.32E-03 -6.21E-04 1.12E-04 -1.30E-05 8.68E-07 -2.54E-08 0.00E+00 0.00E+00 S9 7.87E-06 -2.32E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S10 4.21E-05 -1.27E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S11 -2.93E-03 9.99E-04 -2.40E-04 4.07E-05 -4.79E-06 3.70E-07 -1.69E-08 3.43E-10 S12 1.58E-03 -3.58E-04 6.06E-05 -7.51E-06 6.58E-07 -3.85E-08 1.35E-09 -2.14E-11

[0342] As can be seen from Table 4.2, each lens in the lens assembly 10 is an aspherical lens, that is, the lens assembly 10 includes 12 aspherical surfaces. The aspherical surface type Z of each lens in the lens assembly 10 can be calculated by the following aspherical surface formula:

[0343]

[0344] Among them, parameter c=1 / R, R is the radius of curvature, r is the distance from a point on the optical surface to the optical axis, Z is the aspheric surface vector height of the point along the optical axis, k is the quadratic surface coefficient of the surface, i is the aspheric coefficient term, in this embodiment i is 30, and Ai is the aspheric coefficient.

[0345] Table 4.3 shows the focal lengths of each lens and lens unit in a lens assembly provided in Example 4 of the present application.

[0346] f1 / mm f2 / mm f3 / mm f4 / mm f5 / mm f6 / mm 15.05 -14.07 7.46 -6.83 8.37 -13.11

[0347] Among them, f1, f2, f3, f4, f5, and f6 are the focal lengths of the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, and the sixth lens 16, respectively.

[0348] The lens assembly 10 adopts the above-mentioned two lens unit frameworks and reasonably allocates the optical focal length of the two lens units and the first lens. With the combination of the number of lenses, and the focal length, thickness, refractive index, Abbe number, etc. of each lens, it is possible to achieve the characteristics of large aperture, small size, low cost and high resolution of the lens assembly 10. The optical parameters of the lens assembly 10 composed of the above-mentioned lenses can be shown in the following Table 4.4.

[0349] Table 4.4 shows the optical parameters of a lens assembly provided in Example 4 of the present application.

[0350]

[0351] In this embodiment, the half image height when the lens assembly 10 is in the infinite state may be different from the half image height when the lens assembly 10 is in the macro state to meet the imaging quality requirements.

[0352] It can be seen from Table 4.4 that the lens assembly 10 provided in Example 4 of the present application has the characteristics of large aperture and small total optical length, can realize the long-focus telephoto function, ensure high-quality imaging in scenes such as long-range shooting, and can also realize the macro function of high magnification and resolution, ensure high-definition imaging in scenes such as close-up shooting.

[0353] Fig.15a This is a modulation transfer function curve diagram of a lens assembly provided in Example 4 of the present application when it is in an infinite distance state. Fig.15b This is a modulation transfer function curve diagram of a lens assembly provided in Embodiment 4 of the present application when it is in a macro state.

[0354] in, Fig.15a and Fig.15bThe horizontal axis represents different frequencies, the vertical axis represents modulation contrast, the solid line in the figure represents the sagittal field of view, the dotted line in the figure represents the meridian field of view, and the diff.limit in the figure represents the modulation transfer function of the imaging system for an infinitesimal object point. The closer to the diff.limit curve, the better the imaging quality. Fig.15a and Fig.15b It can be seen that the lens assembly provided in this embodiment can achieve high-quality imaging in both the infinite distance state and the macro state.

[0355] Embodiment 5

[0356] Fig.16 This is a schematic diagram of the simulation structure of a camera module provided in Example 5 of the present application when the lens assembly is in an infinite distance state.

[0357] In the present application examples, see Fig.16 As shown, the number of lenses with optical power included in the lens assembly 10 is 6, wherein the first lens unit 101 may include 3 lenses with optical power, such as the first lens 11, the second lens 12 and the third lens 13, and the second lens unit 102 may include 3 lenses with optical power, such as the fourth lens 14, the fifth lens 15 and the sixth lens 16. Along the optical axis L, from the object side to the image side, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15 and the sixth lens 16 are arranged in sequence.

[0358] That is, in the camera module 110, along the direction of the optical axis L, from the object side to the image side, the aperture 103, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, the sixth lens 16, the filter 30 and the image sensor 20 are arranged in sequence. The light entering the camera module 110 passes through the lens assembly 10 and the filter 30 in the above order and irradiates the image sensor 20, and finally forms an image on the photosensitive surface of the image sensor 20.

[0359] The first lens unit 101 has positive optical power, and the second lens unit 102 has negative optical power.

[0360] Specifically, the first lens 11 may have positive optical power, at least a portion of the object side surface of the first lens 11 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the first lens 11 corresponding to the optical axis may be a convex surface.

[0361] The second lens 12 may have negative optical power, and at least a portion of the object side surface of the second lens 12 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the second lens 12 corresponding to the optical axis may be a convex surface.

[0362] The third lens 13 may have positive optical power, and at least a portion of the object side surface of the third lens 13 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the third lens 13 corresponding to the optical axis may be a concave surface.

[0363] The fourth lens 14 may have negative optical power, and at least a portion of the object side surface of the fourth lens 14 corresponding to the optical axis may be a concave surface, and at least a portion of the image side surface of the fourth lens 14 corresponding to the optical axis may be a convex surface.

[0364] The fifth lens 15 may have positive power, and at least a portion of the object side surface of the fifth lens 15 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the fifth lens 15 corresponding to the optical axis may be a convex surface.

[0365] The sixth lens 16 may have negative optical power, and at least a portion of the object side surface of the sixth lens 16 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the sixth lens 16 corresponding to the optical axis may be a convex surface.

[0366] When the lens assembly 10 is in the infinite state, see Fig.16 As shown, the second lens unit 102 is closer to the first lens unit 101, and is relatively far from the filter 30 and the image sensor 20. When the lens assembly 10 switches from the infinity state to the macro state, the second lens unit 102 moves along the optical axis L toward the image side.

[0367] Fig.17 This is a schematic diagram of the simulation structure of a lens assembly in a camera module provided in Example 5 of the present application when it is in a macro state.

[0368] See also Fig.17 As shown, when the lens assembly 10 is in the macro state, the second lens unit 12 is closer to the filter 30 and the image sensor 20 , and is relatively far away from the first lens unit 101 .

[0369] Among them, the curvature radius R11 of the object side surface of the first lens 11 is 7.81, the curvature radius R12 of the image side surface of the first lens 11 is 152.96, the focal length f1 of the first lens 11 is 14.98, and the first lens 11 satisfies |(R11+R12) / f1|=10.7.

[0370] The focal length EFL1 of the lens assembly 10 when it is in the infinite state is 15.2, and the ratio of the focal length f1 of the first lens 11 to the focal length EFL1 of the lens assembly 10 when it is in the infinite state is f1 / EFL1=0.99.

[0371] The refractive index of the first lens 11 is Nd1=1.544.

[0372] The aperture number F#1 when the lens assembly 10 is in the infinity state is 1.98. The aperture number F#2 when the lens assembly 10 is in the macro state is 2.02.

[0373] The magnification of the lens assembly 10 when in the macro state is Mag=0.3x.

[0374] The focal length G1 of the first lens unit 101 is 8.78, and the ratio of the focal length G1 of the first lens unit 101 to the focal length EFL1 of the lens assembly 10 at infinity |G1 / EFL1| is 0.58.

[0375] The focal length G2 of the second lens unit 102 is -10.07, and the ratio of the focal length G2 of the second lens unit 102 to the focal length EFL1 of the lens assembly 10 at infinity |G2 / EFL1| is 0.66.

[0376] The focal length EFL2 of the lens assembly 10 when in the macro state is 10=10, the total optical length TTL of the lens assembly 10 is 17.26, and the ratio of the focal length EFL2 of the lens assembly 10 when in the macro state to the total optical length TTL of the lens assembly 10 |EFL2 / TTL|=0.58.

[0377] The ratio of the focal length EFL1 when the lens assembly 10 is in the infinite state to the focal length EFL2 when the lens assembly 10 is in the macro state is EFL1 / EFL2 = 1.52.

[0378] The following is an example of the optical parameters of each lens in this embodiment.

[0379] Table 5.1 shows the optical parameters of each lens in a camera module provided in Example 5 of the present application.

[0380]

[0381] Among them, L1 is the first lens 11, L2 is the second lens 12, L3 is the third lens 13, L4 is the fourth lens 14, L5 is the fifth lens 15, L6 is the sixth lens 16, and IR is the filter 30.

[0382] The specific illustration of S0-S14 can be found in the first embodiment, which will not be described in detail in the embodiment.

[0383] The meanings of parameters such as the radius of curvature, thickness, material, and Y semi-aperture can also be found in Example 1, and will not be repeated in this embodiment.

[0384] Table 5.2 shows the aspheric coefficients of each lens in a lens assembly provided in Example 5 of the present application.

[0385]

[0386]

[0387] As can be seen from Table 5.2, each lens in the lens assembly 10 is an aspherical lens, that is, the lens assembly 10 includes 12 aspherical surfaces. The aspherical surface type Z of each lens in the lens assembly 10 can be calculated by the following aspherical surface formula:

[0388]

[0389] Among them, parameter c=1 / R, R is the radius of curvature, r is the distance from a point on the optical surface to the optical axis, Z is the aspheric surface vector height of the point along the optical axis, k is the quadratic surface coefficient of the surface, i is the aspheric coefficient term, in this embodiment i is 30, and Ai is the aspheric coefficient.

[0390] Table 5.3 shows the focal lengths of each lens and lens unit in a lens assembly provided in Example 5 of the present application.

[0391] f1 / mm f2 / mm f3 / mm f4 / mm f5 / mm f6 / mm 14.98 -14.09 7.43 -6.40 9.69 -21.30

[0392] Among them, f1, f2, f3, f4, f5, and f6 are the focal lengths of the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, and the sixth lens 16, respectively.

[0393] The lens assembly 10 adopts the above-mentioned two lens unit frameworks and reasonably allocates the optical focal length of the two lens units and the first lens. By matching the number of lenses and the focal length, thickness, refractive index, Abbe number, etc. of each lens, it is possible to achieve the characteristics of large aperture, small size, low cost and high resolution of the lens assembly 10. The optical parameters of the lens assembly 10 composed of the above-mentioned lenses can be shown in the following Table 5.4.

[0394] Table 5.4 shows the optical parameters of a lens assembly provided in Example 5 of the present application.

[0395]

[0396] It can be seen from Table 5.4 that the lens assembly 10 provided in Example 5 of the present application has the characteristics of large aperture and small total optical length, which can realize the long-focus telephoto function, ensure high-quality imaging in scenes such as long-range shooting, and can also realize the macro function with high magnification and resolution, ensure high-definition imaging in scenes such as close-up shooting.

[0397] Embodiment 6

[0398] Fig.18 A schematic diagram of the simulation structure of a camera module provided in Example 6 of the present application when the lens assembly is in an infinite state.

[0399] In the present application examples, see Fig.18 As shown, the number of lenses with optical power included in the lens assembly 10 is 6, wherein the first lens unit 101 may include 3 lenses with optical power, such as the first lens 11, the second lens 12 and the third lens 13, and the second lens unit 102 may include 3 lenses with optical power, such as the fourth lens 14, the fifth lens 15 and the sixth lens 16. Along the optical axis L, from the object side to the image side, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15 and the sixth lens 16 are arranged in sequence.

[0400] That is, in the camera module 110, along the direction of the optical axis L, from the object side to the image side, the aperture 103, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, the sixth lens 16, the filter 30 and the image sensor 20 are arranged in sequence. The light entering the camera module 110 passes through the lens assembly 10 and the filter 30 in the above order and irradiates the image sensor 20, and finally forms an image on the photosensitive surface of the image sensor 20.

[0401] The first lens unit 101 has positive optical power, and the second lens unit 102 has negative optical power.

[0402] Specifically, the first lens 11 may have positive optical power, at least a portion of the object side surface of the first lens 11 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the first lens 11 corresponding to the optical axis may be a concave surface.

[0403] The second lens 12 may have negative optical power, and at least a portion of the object side surface of the second lens 12 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the second lens 12 corresponding to the optical axis may be a convex surface.

[0404] The third lens 13 may have positive optical power, and at least a portion of the object side surface of the third lens 13 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the third lens 13 corresponding to the optical axis may be a concave surface.

[0405] The fourth lens 14 may have negative optical power, and at least a portion of the object side surface of the fourth lens 14 corresponding to the optical axis may be a concave surface, and at least a portion of the image side surface of the fourth lens 14 corresponding to the optical axis may be a convex surface.

[0406] The fifth lens 15 may have positive power, and at least a portion of the object side surface of the fifth lens 15 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the fifth lens 15 corresponding to the optical axis may be a convex surface.

[0407] The sixth lens 16 may have negative optical power, and at least a portion of the object side surface of the sixth lens 16 corresponding to the optical axis may be a concave surface, and at least a portion of the image side surface of the sixth lens 16 corresponding to the optical axis may be a concave surface.

[0408] When the lens assembly 10 is in the infinite state, see Fig.18 As shown, the second lens unit 102 is closer to the first lens unit 101, and is relatively far from the filter 30 and the image sensor 20. When the lens assembly 10 switches from the infinity state to the macro state, the second lens unit 102 moves along the optical axis L toward the image side.

[0409] Fig.19 A schematic diagram of the simulation structure of a lens assembly in a camera module provided in Example 6 of the present application when the lens assembly is in a macro state.

[0410] See also Fig.19 As shown, when the lens assembly 10 is in the macro state, the second lens unit 12 is closer to the filter 30 and the image sensor 20 , and is relatively far away from the first lens unit 101 .

[0411] Among them, the curvature radius R11 of the object side surface of the first lens 11 is 7.81, the curvature radius R12 of the image side surface of the first lens 11 is -703.84, the focal length f1 of the first lens 11 is 14.17, and the first lens 11 satisfies |(R11+R12) / f1|=49.1.

[0412] The focal length EFL1 of the lens assembly 10 when in the infinite state is 15.1, and the ratio of the focal length f1 of the first lens 11 to the focal length EFL1 of the lens assembly 10 when in the infinite state is f1 / EFL1=0.94.

[0413] The refractive index of the first lens 11 is Nd1=1.544.

[0414] The aperture number F#1 when the lens assembly 10 is in the infinity state is 1.98. The aperture number F#2 when the lens assembly 10 is in the macro state is 2.02.

[0415] The magnification of the lens assembly 10 when in the macro state is Mag=0.3x.

[0416] The focal length G1 of the first lens unit 101 is 8.76, and the ratio of the focal length G1 of the first lens unit 101 to the focal length EFL1 of the lens assembly 10 when it is in an infinite state is |G1 / EFL1|=0.58.

[0417] The focal length G2 of the second lens unit 102 is -10.24, and the ratio of the focal length G2 of the second lens unit 102 to the focal length EFL1 of the lens assembly 10 at infinity is |G2 / EFL1|=0.68.

[0418] The focal length EFL2 of the lens assembly 10 when in the macro state is 10.1, the total optical length TTL of the lens assembly 10 is 17.16, and the ratio of the focal length EFL2 of the lens assembly 10 when in the macro state to the total optical length TTL of the lens assembly 10 |EFL2 / TTL| is 0.59.

[0419] The ratio of the focal length EFL1 when the lens assembly 10 is in the infinity state to the focal length EFL2 when the lens assembly 10 is in the macro state is EFL1 / EFL2 = 1.49.

[0420] The following is an example of the optical parameters of each lens in this embodiment.

[0421] Table 6.1 shows the optical parameters of each lens in a camera module provided in Example 6 of the present application.

[0422]

[0423]

[0424] Among them, L1 is the first lens 11, L2 is the second lens 12, L3 is the third lens 13, L4 is the fourth lens 14, L5 is the fifth lens 15, L6 is the sixth lens 16, and IR is the filter 30.

[0425] The specific illustration of S0-S14 can be found in the first embodiment, which will not be described in detail in the embodiment.

[0426] The meanings of parameters such as the radius of curvature, thickness, material, and Y semi-aperture can also be found in Example 1, and will not be repeated in this embodiment.

[0427] Table 6.2 shows the aspheric coefficients of each lens in a lens assembly provided in Example 6 of the present application.

[0428] Curvature radius R Cone coefficient K A4 A6 A8 A10 A12 A14 S1 7.81 0 4.17E-04 -3.28E-04 1.16E-04 -3.50E-05 8.32E-06 -1.55E-06 S2 -703.84 0 8.10E-03 -4.05E-03 1.55E-03 -4.73E-04 1.15E-04 -2.16E-05 S3 11.56 0 2.11E-02 -1.64E-02 8.15E-03 -3.44E-03 1.24E-03 -3.58E-04 S4 5.04 0 2.65E-02 -2.49E-02 1.31E-02 -5.69E-03 2.18E-03 -6.93E-04 S5 8.29 0 1.05E-02 -9.92E-03 5.47E-03 -2.57E-03 1.05E-03 -3.42E-04 S6 -7.44 0 1.12E-03 -1.17E-03 7.47E-04 -2.46E-04 9.43E-06 3.46E-05 S7 -12.30 0 8.21E-03 -2.27E-03 6.18E-03 -7.57E-03 5.96E-03 -3.24E-03 S8 4.81 0 -9.23E-03 -3.29E-03 1.60E-02 -1.99E-02 1.58E-02 -8.61E-03 S9 3.85 0 -2.18E-02 -8.19E-04 8.47E-04 -1.12E-04 -7.03E-06 1.57E-06 S10 20.95 0 1.38E-02 -1.98E-02 9.11E-03 -3.32E-03 9.43E-04 -1.71E-04 S11 -6.24 0 3.92E-02 -2.33E-02 1.20E-03 1.32E-02 -1.58E-02 1.06E-02 S12 -32.79 0 2.02E-02 -2.53E-02 2.94E-02 -2.62E-02 1.70E-02 -8.09E-03 A16 A18 A20 A22 A24 A26 A28 A30 S1 2.26E-07 -2.56E-08 2.18E-09 -1.35E-10 5.60E-12 -1.39E-13 1.55E-15 0.00E+00 S2 2.99E-06 -2.96E-07 2.00E-08 -8.80E-10 2.24E-11 -2.50E-13 -4.86E-17 0.00E+00 S3 7.91E-05 -1.30E-05 1.59E-06 -1.40E-07 8.69E-09 -3.61E-10 8.98E-12 -1.01E-13 S4 1.72E-04 -3.21E-05 4.43E-06 -4.47E-07 3.19E-08 -1.53E-09 4.43E-11 -5.82E-13 S5 8.33E-05 -1.50E-05 1.99E-06 -1.94E-07 1.35E-08 -6.41E-10 1.85E-11 -2.44E-13 S6 -1.90E-05 5.59E-06 -1.06E-06 1.34E-07 -1.13E-08 6.12E-10 -1.93E-11 2.68E-13 S7 1.23E-03 -3.21E-04 5.48E-05 -5.31E-06 9.91E-08 3.87E-08 -4.23E-09 1.45E-10 S8 3.25E-03 -8.48E-04 1.49E-04 -1.69E-05 1.10E-06 -3.11E-08 0.00E+00 0.00E+00 S9 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S10 1.68E-05 -6.82E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S11 -4.76E-03 1.50E-03 -3.36E-04 5.37E-05 -5.97E-06 4.38E-07 -1.91E-08 3.72E-10 S12 2.82E-03 -7.26E-04 1.37E-04 -1.85E-05 1.76E-06 -1.11E-07 4.17E-09 -7.04E-11

[0429] As can be seen from Table 6.2, each lens in the lens assembly 10 is an aspherical lens, that is, the lens assembly 10 includes 12 aspherical surfaces. The aspherical surface type Z of each lens in the lens assembly 10 can be calculated by the following aspherical surface formula:

[0430]

[0431] Among them, parameter c=1 / R, R is the radius of curvature, r is the distance from a point on the optical surface to the optical axis, Z is the aspheric surface vector height of the point along the optical axis, k is the quadratic surface coefficient of the surface, i is the aspheric coefficient term, in this embodiment i is 30, and Ai is the aspheric coefficient.

[0432] Table 6.3 shows the focal lengths of each lens and lens unit in a lens assembly provided in Example 6 of the present application.

[0433] f1 / mm f2 / mm f3 / mm f4 / mm f5 / mm f6 / mm 14.17 -13.78 7.54 -6.25 7.78 -14.24

[0434] Among them, f1, f2, f3, f4, f5, and f6 are the focal lengths of the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, and the sixth lens 16, respectively.

[0435] The lens assembly 10 adopts the above-mentioned two lens unit frameworks and reasonably allocates the optical focal length of the two lens units and the first lens. By matching the number of lenses and the focal length, thickness, refractive index, Abbe number, etc. of each lens, it is possible to achieve the characteristics of large aperture, small size, low cost and high resolution of the lens assembly 10. The optical parameters of the lens assembly 10 composed of the above-mentioned lenses can be shown in the following Table 6.4.

[0436] Table 6.4 shows the optical parameters of a lens assembly provided in Example 6 of the present application.

[0437]

[0438] It can be seen from Table 6.4 that the lens assembly 10 provided in Example 6 of the present application has the characteristics of large aperture and small total optical length, which can realize the long-focus telephoto function, ensure high-quality imaging in scenes such as long-range shooting, and can also realize the macro function with high magnification and resolution, ensure high-definition imaging in scenes such as close-up shooting.

[0439] Fig. 20 This is a modulation transfer function curve diagram of a lens assembly provided in Example 6 of the present application when it is in an infinite distance state.

[0440] in, Fig. 20 The horizontal axis represents different frequencies, the vertical axis represents modulation contrast, the solid line in the figure represents the sagittal field of view, the dotted line in the figure represents the meridian field of view, and the diff.limit in the figure represents the modulation transfer function of the imaging system for an infinitesimal object point. The closer to the diff.limit curve, the better the imaging quality. Fig. 20 It can be seen that the lens assembly provided in this embodiment can achieve high-quality imaging.

[0441] Embodiment 7

[0442] Fig.21 A schematic diagram of the simulation structure of a camera module provided in Example 7 of the present application when the lens assembly is in an infinite distance state.

[0443] In the present application examples, see Fig.21 As shown, the number of lenses with optical power included in the lens assembly 10 is 6, wherein the first lens unit 101 may include 3 lenses with optical power, such as the first lens 11, the second lens 12 and the third lens 13, and the second lens unit 102 may include 3 lenses with optical power, such as the fourth lens 14, the fifth lens 15 and the sixth lens 16. Along the optical axis L, from the object side to the image side, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15 and the sixth lens 16 are arranged in sequence.

[0444] That is, in the camera module 110, along the direction of the optical axis L, from the object side to the image side, the aperture 103, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, the sixth lens 16, the filter 30 and the image sensor 20 are arranged in sequence. The light entering the camera module 110 passes through the lens assembly 10 and the filter 30 in the above order and irradiates the image sensor 20, and finally forms an image on the photosensitive surface of the image sensor 20.

[0445] The first lens unit 101 has positive optical power, and the second lens unit 102 has negative optical power.

[0446] Specifically, the first lens 11 may have positive optical power, at least a portion of the object side surface of the first lens 11 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the first lens 11 corresponding to the optical axis may be a concave surface.

[0447] The second lens 12 may have negative optical power, and at least a portion of the object side surface of the second lens 12 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the second lens 12 corresponding to the optical axis may be a convex surface.

[0448] The third lens 13 may have positive optical power, and at least a portion of the object side surface of the third lens 13 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the third lens 13 corresponding to the optical axis may be a concave surface.

[0449] The fourth lens 14 may have negative optical power, and at least a portion of the object side surface of the fourth lens 14 corresponding to the optical axis may be a concave surface, and at least a portion of the image side surface of the fourth lens 14 corresponding to the optical axis may be a convex surface.

[0450] The fifth lens 15 may have positive power, and at least a portion of the object side surface of the fifth lens 15 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the fifth lens 15 corresponding to the optical axis may be a convex surface.

[0451] The sixth lens 16 may have negative optical power, and at least a portion of the object side surface of the sixth lens 16 corresponding to the optical axis may be a concave surface, and at least a portion of the image side surface of the sixth lens 16 corresponding to the optical axis may be a concave surface.

[0452] When the lens assembly 10 is in the infinite state, see Fig.21 As shown, the second lens unit 102 is closer to the first lens unit 101, and is relatively far from the filter 30 and the image sensor 20. When the lens assembly 10 switches from the infinity state to the macro state, the second lens unit 102 moves along the optical axis L toward the image side.

[0453] Fig. 22 A schematic diagram of the simulation structure of a lens assembly in a camera module provided in Example 7 of the present application when the lens assembly is in a macro state.

[0454] See also Fig. 22 As shown, when the lens assembly 10 is in the macro state, the second lens unit 12 is closer to the filter 30 and the image sensor 20 , and is relatively far away from the first lens unit 101 .

[0455] Among them, the curvature radius R11 of the object side surface of the first lens 11 is 7.48, the curvature radius R12 of the image side surface of the first lens 11 is -145.88, the focal length f1 of the first lens 11 is 13.11, and the first lens 11 satisfies |(R11+R12) / f1|=10.56.

[0456] The focal length EFL1 of the lens assembly 10 when it is in the infinite state is 15.1, and the ratio of the focal length f1 of the first lens 11 to the focal length EFL1 of the lens assembly 10 when it is in the infinite state is f1 / EFL1=0.87.

[0457] The refractive index of the first lens 11 is Nd1=1.544.

[0458] The aperture number F#1 when the lens assembly 10 is in the infinity state is 1.98. The aperture number F#2 when the lens assembly 10 is in the macro state is 2.02.

[0459] The magnification of the lens assembly 10 when in the macro state is Mag=0.3x.

[0460] The focal length G1 of the first lens unit 101 is 8.78, and the ratio of the focal length G1 of the first lens unit 101 to the focal length EFL1 of the lens assembly 10 at infinity |G1 / EFL1| is 0.58.

[0461] The focal length G2 of the second lens unit 102 is -10.42, and the ratio of the focal length G2 of the second lens unit 102 to the focal length EFL1 of the lens assembly 10 at infinity is |G2 / EFL1|=0.69.

[0462] The focal length EFL2 of the lens assembly 10 when in the macro state is 10.1, the total optical length TTL of the lens assembly 10 is 17.83, and the ratio of the focal length EFL2 of the lens assembly 10 when in the macro state to the total optical length TTL of the lens assembly 10 |EFL2 / TTL| is 0.56.

[0463] The ratio of the focal length EFL1 when the lens assembly 10 is in the infinity state to the focal length EFL2 when the lens assembly 10 is in the macro state is EFL1 / EFL2 = 1.50.

[0464] The following is an example of the optical parameters of each lens in this embodiment.

[0465] Table 7.1 shows the optical parameters of each lens in a camera module provided in Example 7 of the present application.

[0466]

[0467] Among them, L1 is the first lens 11, L2 is the second lens 12, L3 is the third lens 13, L4 is the fourth lens 14, L5 is the fifth lens 15, L6 is the sixth lens 16, and IR is the filter 30.

[0468] The specific illustration of S0-S14 can be found in the first embodiment, which will not be described in detail in the embodiment.

[0469] The meanings of parameters such as the radius of curvature, thickness, material, and Y semi-aperture can also be found in Example 1, and will not be repeated in this embodiment.

[0470] Table 7.2 shows the aspheric coefficients of each lens in a lens assembly provided in Example 7 of the present application.

[0471]

[0472]

[0473] As can be seen from Table 7.2, each lens in the lens assembly 10 is an aspherical lens, that is, the lens assembly 10 includes 12 aspherical surfaces. The aspherical surface type Z of each lens in the lens assembly 10 can be calculated by the following aspherical surface formula:

[0474]

[0475] Among them, parameter c=1 / R, R is the radius of curvature, r is the distance from a point on the optical surface to the optical axis, Z is the aspheric surface vector height of the point along the optical axis, k is the quadratic surface coefficient of the surface, i is the aspheric coefficient term, in this embodiment i is 30, and Ai is the aspheric coefficient.

[0476] Table 7.3 shows the focal lengths of each lens and lens unit in a lens assembly provided in Example 7 of the present application.

[0477] f1 / mm f2 / mm f3 / mm f4 / mm f5 / mm f6 / mm 13.11 -12.85 7.67 -6.32 16.25 100.00

[0478] Among them, f1, f2, f3, f4, f5, and f6 are the focal lengths of the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, and the sixth lens 16, respectively.

[0479] The lens assembly 10 adopts the above-mentioned two lens unit frameworks and reasonably allocates the optical focal length of the two lens units and the first lens. By matching the number of lenses and the focal length, thickness, refractive index, Abbe number, etc. of each lens, it is possible to achieve the characteristics of large aperture, small size, low cost and high resolution of the lens assembly 10. The optical parameters of the lens assembly 10 composed of the above-mentioned lenses can be shown in the following Table 7.4.

[0480] Table 7.4 shows the optical parameters of a lens assembly provided in Example 7 of the present application.

[0481]

[0482] It can be seen from Table 7.4 that the lens assembly 10 provided in Example 7 of the present application has the characteristics of large aperture and small total optical length, which can realize the long-focus telephoto function, ensure high-quality imaging in scenes such as long-range shooting, and can also realize the macro function with high magnification and resolution, ensure high-definition imaging in scenes such as close-up shooting.

[0483] Fig.23 This is a modulation transfer function curve diagram of a lens assembly provided in Example 7 of the present application when it is in an infinite distance state.

[0484] in, Fig.23 The horizontal axis represents different frequencies, the vertical axis represents modulation contrast, the solid line in the figure represents the sagittal field of view, the dotted line in the figure represents the meridian field of view, and the diff.limit in the figure represents the modulation transfer function of the imaging system for an infinitesimal object point. The closer to the diff.limit curve, the better the imaging quality. Fig.23 It can be seen that the lens assembly provided in this embodiment can achieve high-quality imaging.

[0485] Embodiment 8

[0486] Fig.24 A schematic diagram of the simulation structure of a camera module provided in Example 8 of the present application when the lens assembly is in an infinite distance state.

[0487] In the present application examples, see Fig.24 As shown, the number of lenses with optical power included in the lens assembly 10 is 6, wherein the first lens unit 101 may include 3 lenses with optical power, such as the first lens 11, the second lens 12 and the third lens 13, and the second lens unit 102 may include 3 lenses with optical power, such as the fourth lens 14, the fifth lens 15 and the sixth lens 16. Along the optical axis L, from the object side to the image side, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15 and the sixth lens 16 are arranged in sequence.

[0488] That is, in the camera module 110, along the direction of the optical axis L, from the object side to the image side, the aperture 103, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, the sixth lens 16, the filter 30 and the image sensor 20 are arranged in sequence. The light entering the camera module 110 passes through the lens assembly 10 and the filter 30 in the above order and irradiates the image sensor 20, and finally forms an image on the photosensitive surface of the image sensor 20.

[0489] The first lens unit 101 has positive optical power, and the second lens unit 102 has negative optical power.

[0490] Specifically, the first lens 11 may have positive power, at least a portion of the object side surface of the first lens 11 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the first lens 11 corresponding to the optical axis may be a convex surface.

[0491] The second lens 12 may have negative optical power, and at least a portion of the object side surface of the second lens 12 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the second lens 12 corresponding to the optical axis may be a convex surface.

[0492] The third lens 13 may have positive optical power, and at least a portion of the object side surface of the third lens 13 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the third lens 13 corresponding to the optical axis may be a concave surface.

[0493] The fourth lens 14 may have negative optical power, and at least a portion of the object side surface of the fourth lens 14 corresponding to the optical axis may be a concave surface, and at least a portion of the image side surface of the fourth lens 14 corresponding to the optical axis may be a convex surface.

[0494] The fifth lens 15 may have positive power, and at least a portion of the object side surface of the fifth lens 15 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the fifth lens 15 corresponding to the optical axis may be a convex surface.

[0495] The sixth lens 16 may have negative optical power, and at least a portion of the object side surface of the sixth lens 16 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the sixth lens 16 corresponding to the optical axis may be a convex surface.

[0496] When the lens assembly 10 is in the infinite state, see Fig.24 As shown, the second lens unit 102 is closer to the first lens unit 101, and is relatively far from the filter 30 and the image sensor 20. When the lens assembly 10 switches from the infinity state to the macro state, the second lens unit 102 moves along the optical axis L toward the image side.

[0497] Fig.25 A schematic diagram of the simulation structure of a lens assembly in a camera module provided in Example 8 of the present application when the lens assembly is in a macro state.

[0498] See also Fig.25 As shown, when the lens assembly 10 is in the macro state, the second lens unit 12 is closer to the filter 30 and the image sensor 20 , and is relatively far away from the first lens unit 101 .

[0499] Among them, the curvature radius R11 of the object side surface of the first lens 11 is 7.97, the curvature radius R12 of the image side surface of the first lens 11 is 257.72, the focal length f1 of the first lens 11 is 15.03, and the first lens 11 satisfies |(R11+R12) / f1|=17.68.

[0500] The focal length EFL1 of the lens assembly 10 when it is in the infinite state is 15.3, and the ratio of the focal length f1 of the first lens 11 to the focal length EFL1 of the lens assembly 10 when it is in the infinite state is f1 / EFL1=0.98.

[0501] The refractive index of the first lens 11 is Nd1=1.544.

[0502] The aperture number F#1 when the lens assembly 10 is in the infinity state is 1.77. The aperture number F#2 when the lens assembly 10 is in the macro state is 1.82.

[0503] The magnification of the lens assembly 10 when in the macro state is Mag=0.3x.

[0504] The focal length G1 of the first lens unit 101 is 8.64, and the ratio of the focal length G1 of the first lens unit 101 to the focal length EFL1 of the lens assembly 10 when it is in an infinite state is |G1 / EFL1|=0.57.

[0505] The focal length G2 of the second lens unit 102 is -8.66, and the ratio of the focal length G2 of the second lens unit 102 to the focal length EFL1 of the lens assembly 10 when it is in the infinite state is |G2 / EFL1|=0.57.

[0506] The focal length EFL2 of the lens assembly 10 when in the macro state is 9.47, the total optical length TTL of the lens assembly 10 is 17.9, and the ratio of the focal length EFL2 of the lens assembly 10 when in the macro state to the total optical length TTL of the lens assembly 10 is |EFL2 / TTL|=0.53.

[0507] The ratio of the focal length EFL1 when the lens assembly 10 is in the infinite state to the focal length EFL2 when the lens assembly 10 is in the macro state is EFL1 / EFL2 = 1.62.

[0508] The following is an example of the optical parameters of each lens in this embodiment.

[0509] Table 8.1 shows the optical parameters of each lens in a camera module provided in Example 8 of the present application.

[0510]

[0511]

[0512] Among them, L1 is the first lens 11, L2 is the second lens 12, L3 is the third lens 13, L4 is the fourth lens 14, L5 is the fifth lens 15, L6 is the sixth lens 16, and IR is the filter 30.

[0513] The specific illustration of S0-S14 can be found in the first embodiment, which will not be described in detail in the embodiment.

[0514] The meanings of parameters such as the radius of curvature, thickness, material, and Y semi-aperture can also be found in Example 1, and will not be repeated in this embodiment.

[0515] Table 8.2 shows the aspheric coefficients of each lens in a lens assembly provided in Example 8 of the present application.

[0516] Curvature radius R Cone coefficient K A4 A6 A8 A10 A12 A14 S1 7.97 0 -5.75E-04 4.99E-05 -3.70E-05 1.44E-05 -3.94E-06 7.35E-07 S2 257.72 0 -6.05E-04 1.25E-04 -2.38E-05 -4.00E-07 9.00E-07 -1.77E-07 S3 4.81 0 -9.32E-03 3.41E-05 7.89E-04 -4.55E-04 1.53E-04 -3.54E-05 S4 2.92 -1 -1.02E-02 -1.13E-03 2.23E-03 -1.31E-03 5.09E-04 -1.48E-04 S5 4.98 0 -9.81E-04 -1.70E-03 1.44E-03 -7.61E-04 3.17E-04 -1.10E-04 S6 -12.11 0 7.88E-04 6.41E-04 -8.30E-04 6.60E-04 -2.96E-04 7.18E-05 S7 -5.71 0 6.65E-03 2.54E-02 -2.68E-02 1.86E-02 -9.59E-03 3.70E-03 S8 6.34 0 -2.92E-02 3.90E-02 -2.84E-02 1.64E-02 -7.34E-03 2.44E-03 S9 4.06 0 -3.54E-02 8.59E-03 -1.36E-03 7.13E-05 6.57E-06 -7.41E-07 S10 10.81 0 3.63E-03 -2.64E-02 1.83E-02 -7.12E-03 1.66E-03 -2.29E-04 S11 22.81 0 1.01E-02 -2.28E-02 1.08E-02 1.14E-03 -4.67E-03 3.30E-03 S12 11.74 0 -9.87E-04 -2.87E-04 3.50E-04 -3.05E-04 1.72E-04 -6.62E-05 A16 A18 A20 A22 A24 A26 A28 A30 S1 -9.50E-08 8.59E-09 -5.42E-10 2.34E-11 -6.61E-13 1.10E-14 -8.13E-17 0.00E+00 S2 1.86E-08 -1.23E-09 5.16E-11 -1.34E-12 1.93E-14 -1.15E-16 0.00E+00 0.00E+00 S3 5.99E-06 -7.66E-07 7.45E-08 -5.43E-09 2.86E-10 -1.02E-11 2.21E-13 -2.18E-15 S4 3.44E-05 -6.28E-06 8.77E-07 -8.97E-08 6.44E-09 -3.05E-10 8.51E-12 -1.06E-13 S5 3.02E-05 -6.27E-06 9.49E-07 -1.02E-07 7.52E-09 -3.63E-10 1.03E-11 -1.30E-13 S6 -4.22E-06 -3.02E-06 1.11E-06 -1.97E-07 2.13E-08 -1.42E-09 5.39E-11 -8.95E-13 S7 -1.07E-03 2.35E-04 -3.87E-05 4.71E-06 -4.12E-07 2.45E-08 -8.86E-10 1.47E-11 S8 -5.90E-04 1.03E-04 -1.26E-05 1.05E-06 -5.73E-08 1.91E-09 -3.14E-11 0.00E+00 S9 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S10 1.71E-05 -5.37E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S11 -1.42E-03 4.31E-04 -9.44E-05 1.48E-05 -1.63E-06 1.18E-07 -5.08E-09 9.85E-11 S12 1.79E-05 -3.49E-06 4.92E-07 -4.98E-08 3.54E-09 -1.67E-10 4.72E-12 -6.01E-14

[0517] As can be seen from Table 8.2, each lens in the lens assembly 10 is an aspherical lens, that is, the lens assembly 10 includes 12 aspherical surfaces. The aspherical surface type Z of each lens in the lens assembly 10 can be calculated by the following aspherical surface formula:

[0518]

[0519] Among them, parameter c=1 / R, R is the radius of curvature, r is the distance from a point on the optical surface to the optical axis, Z is the aspheric surface vector height of the point along the optical axis, k is the quadratic surface coefficient of the surface, i is the aspheric coefficient term, in this embodiment i is 30, and Ai is the aspheric coefficient.

[0520] Table 8.3 shows the focal lengths of each lens and lens unit in a lens assembly provided in Example 8 of the present application.

[0521] f1 / mm f2 / mm f3 / mm f4 / mm f5 / mm f6 / mm 15.03 -12.54 6.81 -5.45 10.19 -51.31

[0522] Among them, f1, f2, f3, f4, f5, and f6 are the focal lengths of the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, and the sixth lens 16, respectively.

[0523] The lens assembly 10 adopts the above-mentioned two lens unit frameworks and reasonably allocates the optical focal length of the two lens units and the first lens. By matching the number of lenses and the focal length, thickness, refractive index, Abbe number, etc. of each lens, it is possible to achieve the characteristics of large aperture, small size, low cost and high resolution of the lens assembly 10. The optical parameters of the lens assembly 10 composed of the above-mentioned lenses can be shown in the following Table 8.4.

[0524] Table 8.4 shows the optical parameters of a lens assembly provided in Example 8 of the present application.

[0525]

[0526] It can be seen from Table 8.4 that the lens assembly 10 provided in Example 8 of the present application has the characteristics of large aperture and small total optical length, can realize the long-focus telephoto function, ensure high-quality imaging in scenes such as long-range shooting, and can also realize the macro function of high magnification and resolution, ensure high-definition imaging in scenes such as close-up shooting.

[0527] Embodiment 9

[0528] Fig.26 A schematic diagram of the simulation structure of a camera module provided in Embodiment 9 of the present application when the lens assembly is in an infinite distance state.

[0529] In the present application examples, see Fig.26As shown, the number of lenses with optical power included in the lens assembly 10 is 6, wherein the first lens unit 101 may include 3 lenses with optical power, such as the first lens 11, the second lens 12 and the third lens 13, and the second lens unit 102 may include 3 lenses with optical power, such as the fourth lens 14, the fifth lens 15 and the sixth lens 16. Along the optical axis L, from the object side to the image side, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15 and the sixth lens 16 are arranged in sequence.

[0530] That is, in the camera module 110, along the direction of the optical axis L, from the object side to the image side, the aperture 103, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, the sixth lens 16, the filter 30 and the image sensor 20 are arranged in sequence. The light entering the camera module 110 passes through the lens assembly 10 and the filter 30 in the above order and irradiates the image sensor 20, and finally forms an image on the photosensitive surface of the image sensor 20.

[0531] The first lens unit 101 has positive optical power, and the second lens unit 102 has negative optical power.

[0532] Specifically, the first lens 11 may have positive optical power, at least a portion of the object side surface of the first lens 11 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the first lens 11 corresponding to the optical axis may be a concave surface.

[0533] The second lens 12 may have negative optical power, and at least a portion of the object side surface of the second lens 12 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the second lens 12 corresponding to the optical axis may be a convex surface.

[0534] The third lens 13 may have positive optical power, and at least a portion of the object side surface of the third lens 13 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the third lens 13 corresponding to the optical axis may be a concave surface.

[0535] The fourth lens 14 may have negative optical power, and at least a portion of the object side surface of the fourth lens 14 corresponding to the optical axis may be a concave surface, and at least a portion of the image side surface of the fourth lens 14 corresponding to the optical axis may be a concave surface.

[0536] The fifth lens 15 may have positive power, and at least a portion of the object side surface of the fifth lens 15 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the fifth lens 15 corresponding to the optical axis may be a convex surface.

[0537] The sixth lens 16 may have negative optical power, and at least a portion of the object side surface of the sixth lens 16 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the sixth lens 16 corresponding to the optical axis may be a convex surface.

[0538] When the lens assembly 10 is in the infinite state, see Fig.26 As shown, the second lens unit 102 is closer to the first lens unit 101, and is relatively far from the filter 30 and the image sensor 20. When the lens assembly 10 switches from the infinity state to the macro state, the second lens unit 102 moves along the optical axis L toward the image side.

[0539] Fig. 27 A schematic diagram of the simulation structure of a lens assembly in a camera module provided in Embodiment 9 of the present application when the lens assembly is in a macro state.

[0540] See also Fig. 27 As shown, when the lens assembly 10 is in the macro state, the second lens unit 12 is closer to the filter 30 and the image sensor 20 , and is relatively far away from the first lens unit 101 .

[0541] Among them, the curvature radius R11 of the object side surface of the first lens 11 is 7.69, the curvature radius R12 of the image side surface of the first lens 11 is -123.61, the focal length f1 of the first lens 11 is 13.40, and the first lens 11 satisfies |(R11+R12) / f1|=8.65.

[0542] The focal length EFL1 of the lens assembly 10 when it is in the infinite state is 15.3, and the ratio of the focal length f1 of the first lens 11 to the focal length EFL1 of the lens assembly 10 when it is in the infinite state is f1 / EFL1=0.88.

[0543] The refractive index of the first lens 11 is Nd1=1.544.

[0544] The aperture number F#1 when the lens assembly 10 is in the infinity state is 1.69. The aperture number F#2 when the lens assembly 10 is in the macro state is 1.72.

[0545] The magnification of the lens assembly 10 when in the macro state is Mag=0.3x.

[0546] The focal length G1 of the first lens unit 101 is 8.64, and the ratio of the focal length G1 of the first lens unit 101 to the focal length EFL1 of the lens assembly 10 when it is in an infinite state is |G1 / EFL1|=0.57.

[0547] The focal length G2 of the second lens unit 102 is -8.79, and the ratio of the focal length G2 of the second lens unit 102 to the focal length EFL1 of the lens assembly 10 at infinity |G2 / EFL1| is 0.58.

[0548] The focal length EFL2 of the lens assembly 10 when in the macro state is 9.55, the total optical length TTL of the lens assembly 10 is 17.7, and the ratio of the focal length EFL2 of the lens assembly 10 when in the macro state to the total optical length TTL of the lens assembly 10 is |EFL2 / TTL|=0.54.

[0549] The ratio of the focal length EFL1 when the lens assembly 10 is in the infinite state to the focal length EFL2 when the lens assembly 10 is in the macro state is EFL1 / EFL2 = 1.60.

[0550] The following is an example of the optical parameters of each lens in this embodiment.

[0551] Table 9.1 shows the optical parameters of each lens in a camera module provided in Example 9 of the present application.

[0552]

[0553] Among them, L1 is the first lens 11, L2 is the second lens 12, L3 is the third lens 13, L4 is the fourth lens 14, L5 is the fifth lens 15, L6 is the sixth lens 16, and IR is the filter 30.

[0554] The specific illustration of S0-S14 can be found in the first embodiment, which will not be described in detail in the embodiment.

[0555] The meanings of parameters such as the radius of curvature, thickness, material, and Y semi-aperture can also be found in Example 1, and will not be repeated in this embodiment.

[0556] Table 9.2 shows the aspheric coefficients of each lens in a lens assembly provided in Example 9 of the present application.

[0557]

[0558]

[0559] As can be seen from Table 9.2, each lens in the lens assembly 10 is an aspherical lens, that is, the lens assembly 10 includes 12 aspherical surfaces. The aspherical surface type Z of each lens in the lens assembly 10 can be calculated by the following aspherical surface formula:

[0560]

[0561] Among them, parameter c=1 / R, R is the radius of curvature, r is the distance from a point on the optical surface to the optical axis, Z is the aspheric surface vector height of the point along the optical axis, k is the quadratic surface coefficient of the surface, i is the aspheric coefficient term, in this embodiment i is 30, and Ai is the aspheric coefficient.

[0562] Table 9.3 shows the focal lengths of each lens and lens unit in a lens assembly provided in Example 9 of the present application.

[0563] f1 / mm f2 / mm f3 / mm f4 / mm f5 / mm f6 / mm 13.40 -9.90 6.30 -8.96 32.02 -47.53

[0564] Among them, f1, f2, f3, f4, f5, and f6 are the focal lengths of the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, and the sixth lens 16, respectively.

[0565] The lens assembly 10 adopts the above-mentioned two lens unit frameworks and reasonably allocates the optical focal length of the two lens units and the first lens. By matching the number of lenses and the focal length, thickness, refractive index, Abbe number, etc. of each lens, it is possible to achieve the characteristics of large aperture, small size, low cost and high resolution of the lens assembly 10. The optical parameters of the lens assembly 10 composed of the above-mentioned lenses can be shown in the following Table 9.4.

[0566] Table 9.4 shows the optical parameters of a lens assembly provided in Example 9 of the present application.

[0567]

[0568] It can be seen from Table 9.4 that the lens assembly 10 provided in Example 9 of the present application has the characteristics of large aperture and small total optical length, which can realize the long-focus telephoto function, ensure high-quality imaging in scenes such as long-range shooting, and can also realize the macro function with high magnification and resolution, ensure high-definition imaging in scenes such as close-up shooting.

[0569] Fig.28 This is a modulation transfer function curve diagram of a lens assembly provided in Example 9 of the present application when it is in an infinite state.

[0570] in, Fig.28 The horizontal axis represents different frequencies, the vertical axis represents modulation contrast, the solid line in the figure represents the sagittal field of view, the dotted line in the figure represents the meridian field of view, and the diff.limit in the figure represents the modulation transfer function of the imaging system for an infinitesimal object point. The closer to the diff.limit curve, the better the imaging quality. Fig.28 It can be seen that the lens assembly provided in this embodiment can achieve high-quality imaging.

[0571] Embodiment 10

[0572] Fig.29 A schematic diagram of the simulation structure of a camera module provided in the tenth embodiment of the present application when the lens assembly is in an infinite distance state.

[0573] In the present application examples, see Fig.29As shown, the number of lenses with optical power included in the lens assembly 10 is 6, wherein the first lens unit 101 may include 3 lenses with optical power, such as the first lens 11, the second lens 12 and the third lens 13, and the second lens unit 102 may include 3 lenses with optical power, such as the fourth lens 14, the fifth lens 15 and the sixth lens 16. Along the optical axis L, from the object side to the image side, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15 and the sixth lens 16 are arranged in sequence.

[0574] That is, in the camera module 110, along the direction of the optical axis L, from the object side to the image side, the aperture 103, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, the sixth lens 16, the filter 30 and the image sensor 20 are arranged in sequence. The light entering the camera module 110 passes through the lens assembly 10 and the filter 30 in the above order and irradiates the image sensor 20, and finally forms an image on the photosensitive surface of the image sensor 20.

[0575] The first lens unit 101 has positive optical power, and the second lens unit 102 has negative optical power.

[0576] Specifically, the first lens 11 may have positive optical power, at least a portion of the object side surface of the first lens 11 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the first lens 11 corresponding to the optical axis may be a concave surface.

[0577] The second lens 12 may have negative optical power, and at least a portion of the object side surface of the second lens 12 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the second lens 12 corresponding to the optical axis may be a convex surface.

[0578] The third lens 13 may have positive optical power, and at least a portion of the object side surface of the third lens 13 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the third lens 13 corresponding to the optical axis may be a concave surface.

[0579] The fourth lens 14 may have negative optical power, and at least a portion of the object side surface of the fourth lens 14 corresponding to the optical axis may be a concave surface, and at least a portion of the image side surface of the fourth lens 14 corresponding to the optical axis may be a concave surface.

[0580] The fifth lens 15 may have positive power, and at least a portion of the object side surface of the fifth lens 15 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the fifth lens 15 corresponding to the optical axis may be a convex surface.

[0581] The sixth lens 16 may have negative optical power, and at least a portion of the object side surface of the sixth lens 16 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the sixth lens 16 corresponding to the optical axis may be a convex surface.

[0582] When the lens assembly 10 is in the infinite state, see Fig.29 As shown, the second lens unit 102 is closer to the first lens unit 101, and is relatively far from the filter 30 and the image sensor 20. When the lens assembly 10 switches from the infinity state to the macro state, the second lens unit 102 moves along the optical axis L toward the image side.

[0583] Fig.30 A schematic diagram of the simulation structure of a lens assembly in a camera module provided in the tenth embodiment of the present application when in a macro state.

[0584] See also Fig.30 As shown, when the lens assembly 10 is in the macro state, the second lens unit 12 is closer to the filter 30 and the image sensor 20 , and is relatively far away from the first lens unit 101 .

[0585] Among them, the curvature radius R11 of the object side surface of the first lens 11 is 8.50, the curvature radius R12 of the image side surface of the first lens 11 is -51.71, the focal length f1 of the first lens 11 is 12.29, and the first lens 11 satisfies |(R11+R12) / f1|=3.52.

[0586] The focal length EFL1 of the lens assembly 10 when it is in the infinite state is 15.1, and the ratio of the focal length f1 of the first lens 11 to the focal length EFL1 of the lens assembly 10 when it is in the infinite state is f1 / EFL1=0.81.

[0587] The refractive index of the first lens 11 is Nd1=1.544.

[0588] The aperture number F#1 when the lens assembly 10 is in the infinity state is 1.58. The aperture number F#2 when the lens assembly 10 is in the macro state is 1.54.

[0589] The magnification of the lens assembly 10 when in the macro state is Mag=0.295x.

[0590] The focal length G1 of the first lens unit 101 is 9.03, and the ratio of the focal length G1 of the first lens unit 101 to the focal length EFL1 of the lens assembly 10 at infinity |G1 / EFL1| is 0.60.

[0591] The focal length G2 of the second lens unit 102 is -10.2, and the ratio of the focal length G2 of the second lens unit 102 to the focal length EFL1 of the lens assembly 10 at infinity is |G2 / EFL1|=0.67.

[0592] The focal length EFL2 of the lens assembly 10 when in the macro state is 9.48, the total optical length TTL of the lens assembly 10 is 18.5, and the ratio of the focal length EFL2 of the lens assembly 10 when in the macro state to the total optical length TTL of the lens assembly 10 is |EFL2 / TTL|=0.51.

[0593] The ratio of the focal length EFL1 when the lens assembly 10 is in the infinite state to the focal length EFL2 when the lens assembly 10 is in the macro state is EFL1 / EFL2 = 1.59.

[0594] The following is an example of the optical parameters of each lens in this embodiment.

[0595] Table 10.1 shows the optical parameters of each lens in a camera module provided in Example 10 of the present application.

[0596]

[0597]

[0598] Among them, L1 is the first lens 11, L2 is the second lens 12, L3 is the third lens 13, L4 is the fourth lens 14, L5 is the fifth lens 15, L6 is the sixth lens 16, and IR is the filter 30.

[0599] The specific illustration of S0-S14 can be found in the first embodiment, which will not be described in detail in the embodiment.

[0600] The meanings of parameters such as the radius of curvature, thickness, material, and Y semi-aperture can also be found in Example 1, and will not be repeated in this embodiment.

[0601] Table 10.2 shows the aspheric coefficients of each lens in a lens assembly provided in Example 10 of the present application.

[0602] Curvature radius R Cone coefficient K A4 A6 A8 A10 A12 A14 S1 8.50 0 -2.76E-04 2.98E-05 -2.16E-05 7.19E-06 -1.57E-06 2.29E-07 S2 -51.71 0 1.74E-03 7.47E-04 -3.74E-04 8.57E-05 -1.26E-05 1.27E-06 S3 3.47 -1 -1.90E-02 4.91E-03 -3.80E-04 -3.26E-04 1.46E-04 -3.18E-05 S4 2.30 -1 -2.39E-02 5.63E-03 7.61E-05 -6.81E-04 2.61E-04 -5.39E-05 S5 6.42 0 -3.27E-05 -1.48E-05 1.67E-04 -1.24E-05 -2.95E-05 1.22E-05 S6 -10.77 0 5.76E-04 1.83E-04 -1.92E-04 1.46E-04 -7.01E-05 2.23E-05 S7 -3.58 0 4.92E-02 -1.35E-02 4.18E-03 -1.33E-03 4.30E-04 -1.31E-04 S8 -11.59 0 4.44E-02 -1.06E-02 4.39E-03 -2.86E-03 1.67E-03 -7.17E-04 S9 3.38 0 -2.68E-02 4.28E-03 -5.32E-04 -6.04E-05 2.08E-05 -1.34E-06 S10 3.31 0 -4.05E-02 1.08E-02 -3.30E-03 6.61E-04 -8.71E-05 7.94E-06 S11 11.73 0 -5.79E-03 2.63E-03 -2.70E-03 2.20E-03 -1.23E-03 4.75E-04 S12 13.10 0 2.28E-04 -3.62E-03 4.05E-03 -2.83E-03 1.33E-03 -4.35E-04 A16 A18 A20 A22 A24 A26 A28 A30 S1 -2.32E-08 1.65E-09 -8.17E-11 2.78E-12 -6.19E-14 8.09E-16 -4.73E-18 0.00E+00 S2 -9.00E-08 4.45E-09 -1.51E-10 3.36E-12 -4.41E-14 2.59E-16 0.00E+00 0.00E+00 S3 4.43E-06 -4.23E-07 2.84E-08 -1.33E-09 4.29E-11 -8.95E-13 1.08E-14 -5.67E-17 S4 7.22E-06 -6.69E-07 4.48E-08 -2.28E-09 9.20E-11 -2.92E-12 6.37E-14 -6.78E-16 S5 -2.23E-06 2.07E-07 -5.09E-09 -9.61E-10 1.19E-10 -6.31E-12 1.70E-13 -1.91E-15 S6 -4.86E-06 7.49E-07 -8.22E-08 6.40E-09 -3.46E-10 1.24E-11 -2.62E-13 2.50E-15 S7 3.36E-05 -6.68E-06 9.85E-07 -1.05E-07 7.81E-09 -3.84E-10 1.12E-11 -1.47E-13 S8 2.21E-04 -4.89E-05 7.66E-06 -8.30E-07 5.91E-08 -2.49E-09 4.70E-11 0.00E+00 S9 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S10 -4.64E-07 1.21E-08 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S11 -1.30E-04 2.57E-05 -3.68E-06 3.78E-07 -2.71E-08 1.29E-09 -3.67E-11 4.68E-13 S12 1.02E-04 -1.72E-05 2.10E-06 -1.83E-07 1.11E-08 -4.46E-10 1.06E-11 -1.13E-13

[0603] As can be seen from Table 10.2, each lens in the lens assembly 10 is an aspherical lens, that is, the lens assembly 10 includes 12 aspherical surfaces. The aspherical surface type Z of each lens in the lens assembly 10 can be calculated by the following aspherical surface formula:

[0604]

[0605] Among them, parameter c=1 / R, R is the radius of curvature, r is the distance from a point on the optical surface to the optical axis, Z is the aspheric surface vector height of the point along the optical axis, k is the quadratic surface coefficient of the surface, i is the aspheric coefficient term, in this embodiment i is 30, and Ai is the aspheric coefficient.

[0606] Table 10.3 shows the focal lengths of the lenses and lens units in a lens assembly provided in Example 10 of the present application.

[0607] f1 / mm f2 / mm f3 / mm f4 / mm f5 / mm f6 / mm 12.29 -11.66 7.72 -9.82 133.22 100.00

[0608] Among them, f1, f2, f3, f4, f5, and f6 are the focal lengths of the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, and the sixth lens 16, respectively.

[0609] The lens assembly 10 adopts the above-mentioned two lens unit frameworks and reasonably allocates the optical focal length of the two lens units and the first lens. By matching the number of lenses and the focal length, thickness, refractive index, Abbe number, etc. of each lens, it is possible to achieve the characteristics of large aperture, small size, low cost and high resolution of the lens assembly 10. The optical parameters of the lens assembly 10 composed of the above-mentioned lenses can be shown in the following Table 10.4.

[0610] Table 10.4 shows the optical parameters of a lens assembly provided in Example 10 of the present application.

[0611]

[0612] It can be seen from Table 10.4 that the lens assembly 10 provided in Example 10 of the present application has the characteristics of large aperture and small total optical length, which can realize the long-focus telephoto function, ensure high-quality imaging in scenes such as long-range shooting, and can also realize the macro function of high magnification and resolution, ensure high-definition imaging in scenes such as close-up shooting.

[0613] Fig.31 This is a modulation transfer function curve diagram of a lens assembly provided in Example 10 of the present application when it is in an infinite distance state.

[0614] in, Fig.31 The horizontal axis represents different frequencies, the vertical axis represents modulation contrast, the solid line in the figure represents the sagittal field of view, the dotted line in the figure represents the meridian field of view, and the diff.limit in the figure represents the modulation transfer function of the imaging system for an infinitesimal object point. The closer to the diff.limit curve, the better the imaging quality. Fig.31 It can be seen that the lens assembly provided in this embodiment can achieve high-quality imaging.

[0615] Embodiment 11

[0616] Fig.32 A schematic diagram of the simulation structure of a camera module provided in Example 11 of the present application when the lens assembly is in an infinite distance state.

[0617] In the present application examples, see Fig.32As shown, the number of lenses with optical power included in the lens assembly 10 is 6, wherein the first lens unit 101 may include 3 lenses with optical power, such as the first lens 11, the second lens 12 and the third lens 13, and the second lens unit 102 may include 3 lenses with optical power, such as the fourth lens 14, the fifth lens 15 and the sixth lens 16. Along the optical axis L, from the object side to the image side, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15 and the sixth lens 16 are arranged in sequence.

[0618] That is, in the camera module 110, along the direction of the optical axis L, from the object side to the image side, the aperture 103, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, the sixth lens 16, the filter 30 and the image sensor 20 are arranged in sequence. The light entering the camera module 110 passes through the lens assembly 10 and the filter 30 in the above order and irradiates the image sensor 20, and finally forms an image on the photosensitive surface of the image sensor 20.

[0619] The first lens unit 101 has positive optical power, and the second lens unit 102 has negative optical power.

[0620] Specifically, the first lens 11 may have positive optical power, at least a portion of the object side surface of the first lens 11 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the first lens 11 corresponding to the optical axis may be a concave surface.

[0621] The second lens 12 may have negative optical power, and at least a portion of the object side surface of the second lens 12 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the second lens 12 corresponding to the optical axis may be a convex surface.

[0622] The third lens 13 may have positive optical power, and at least a portion of the object side surface of the third lens 13 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the third lens 13 corresponding to the optical axis may be a concave surface.

[0623] The fourth lens 14 may have negative optical power, and at least a portion of the object side surface of the fourth lens 14 corresponding to the optical axis may be a concave surface, and at least a portion of the image side surface of the fourth lens 14 corresponding to the optical axis may be a concave surface.

[0624] The fifth lens 15 may have positive power, and at least a portion of the object side surface of the fifth lens 15 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the fifth lens 15 corresponding to the optical axis may be a convex surface.

[0625] The sixth lens 16 may have negative optical power, and at least a portion of the object side surface of the sixth lens 16 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the sixth lens 16 corresponding to the optical axis may be a convex surface.

[0626] When the lens assembly 10 is in the infinite state, see Fig.32 As shown, the second lens unit 102 is closer to the first lens unit 101, and is relatively far from the filter 30 and the image sensor 20. When the lens assembly 10 switches from the infinity state to the macro state, the second lens unit 102 moves along the optical axis L toward the image side.

[0627] Fig.33 A schematic diagram of the simulation structure of a lens assembly in a camera module provided in Example 11 of the present application when the lens assembly is in a macro state.

[0628] See also Fig.33 As shown, when the lens assembly 10 is in the macro state, the second lens unit 12 is closer to the filter 30 and the image sensor 20 , and is relatively far away from the first lens unit 101 .

[0629] Among them, the curvature radius R11 of the object side surface of the first lens 11 is 7.97, the curvature radius R12 of the image side surface of the first lens 11 is -5112.89, the focal length f1 of the first lens 11 is 14.56, and the first lens 11 satisfies |(R11+R12) / f1|=350.6.

[0630] The focal length EFL1 of the lens assembly 10 when it is in the infinite state is 15.05, and the ratio of the focal length f1 of the first lens 11 to the focal length EFL1 of the lens assembly 10 when it is in the infinite state is f1 / EFL1=0.98.

[0631] The refractive index of the first lens 11 is Nd1=1.544.

[0632] The aperture number F#1 when the lens assembly 10 is in the infinity state is 1.48. The aperture number F#2 when the lens assembly 10 is in the macro state is 1.46.

[0633] The magnification of the lens assembly 10 when in the macro state is Mag=0.293x.

[0634] The focal length G1 of the first lens unit 101 is 8.64, and the ratio of the focal length G1 of the first lens unit 101 to the focal length EFL1 of the lens assembly 10 when it is in an infinite state is |G1 / EFL1|=0.57.

[0635] The focal length G2 of the second lens unit 102 is -8.95, and the ratio of the focal length G2 of the second lens unit 102 to the focal length EFL1 of the lens assembly 10 at infinity |G2 / EFL1| is 0.59.

[0636] The focal length EFL2 of the lens assembly 10 when in the macro state is 9.53, the total optical length TTL of the lens assembly 10 is 17.94, and the ratio of the focal length EFL2 of the lens assembly 10 when in the macro state to the total optical length TTL of the lens assembly 10 is |EFL2 / TTL|=0.53.

[0637] The ratio of the focal length EFL1 when the lens assembly 10 is in the infinite state to the focal length EFL2 when the lens assembly 10 is in the macro state is EFL1 / EFL2 = 1.58.

[0638] The following is an example of the optical parameters of each lens in this embodiment.

[0639] Table 11.1 shows the optical parameters of each lens in a camera module provided in Example 11 of the present application.

[0640]

[0641] Among them, L1 is the first lens 11, L2 is the second lens 12, L3 is the third lens 13, L4 is the fourth lens 14, L5 is the fifth lens 15, L6 is the sixth lens 16, and IR is the filter 30.

[0642] The specific illustration of S0-S14 can be found in the first embodiment, which will not be described in detail in the embodiment.

[0643] The meanings of parameters such as the radius of curvature, thickness, material, and Y semi-aperture can also be found in Example 1, and will not be repeated in this embodiment.

[0644] Table 11.2 shows the aspheric coefficients of each lens in a lens assembly provided in Example 11 of the present application.

[0645]

[0646]

[0647] As can be seen from Table 11.2, each lens in the lens assembly 10 is an aspherical lens, that is, the lens assembly 10 includes 12 aspherical surfaces. The aspherical surface type Z of each lens in the lens assembly 10 can be calculated by the following aspherical surface formula:

[0648]

[0649] Among them, parameter c=1 / R, R is the radius of curvature, r is the distance from a point on the optical surface to the optical axis, Z is the aspheric surface vector height of the point along the optical axis, k is the quadratic surface coefficient of the surface, i is the aspheric coefficient term, in this embodiment i is 30, and Ai is the aspheric coefficient.

[0650] Table 11.3 shows the focal lengths of the lenses and lens units in a lens assembly provided in Example 11 of the present application.

[0651] f1 / mm f2 / mm f3 / mm f4 / mm f5 / mm f6 / mm 14.56 -12.08 6.68 -9.09 32.67 -48.81

[0652] Among them, f1, f2, f3, f4, f5, and f6 are the focal lengths of the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, and the sixth lens 16, respectively.

[0653] The lens assembly 10 adopts the above-mentioned two lens unit frameworks, and through the reasonable allocation of the optical focal length of the two lens units and the first lens, the number of lenses, and the focal length, thickness, refractive index, Abbe number, etc. of each lens can achieve the characteristics of large aperture, small size, low cost and high resolution of the lens assembly 10. The optical parameters of the lens assembly 10 composed of the above-mentioned lenses can be shown in the following Table 14.4.

[0654] Table 11.4 shows the optical parameters of a lens assembly provided in Example 11 of the present application.

[0655]

[0656] It can be seen from Table 11.4 that the lens assembly 10 provided in Example 11 of the present application has the characteristics of large aperture and small total optical length, which can realize the long-focus telephoto function, ensure high-quality imaging in scenes such as long-range shooting, and can also realize the macro function with high magnification and resolution, ensure high-definition imaging in scenes such as close-up shooting.

[0657] Embodiment 12

[0658] Fig.34 A schematic diagram of the simulation structure of a camera module provided in the twelfth embodiment of the present application when the lens assembly is in an infinite state.

[0659] In the present application examples, see Fig.34 As shown, the number of lenses with optical power included in the lens assembly 10 is 6, wherein the first lens unit 101 may include 3 lenses with optical power, such as the first lens 11, the second lens 12 and the third lens 13, and the second lens unit 102 may include 3 lenses with optical power, such as the fourth lens 14, the fifth lens 15 and the sixth lens 16. Along the optical axis L, from the object side to the image side, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15 and the sixth lens 16 are arranged in sequence.

[0660] That is, in the camera module 110, along the direction of the optical axis L, from the object side to the image side, the aperture 103, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, the sixth lens 16, the filter 30 and the image sensor 20 are arranged in sequence. The light entering the camera module 110 passes through the lens assembly 10 and the filter 30 in the above order and irradiates the image sensor 20, and finally forms an image on the photosensitive surface of the image sensor 20.

[0661] The first lens unit 101 has positive optical power, and the second lens unit 102 has negative optical power.

[0662] Specifically, the first lens 11 may have positive optical power, at least a portion of the object side surface of the first lens 11 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the first lens 11 corresponding to the optical axis may be a convex surface.

[0663] The second lens 12 may have negative optical power, and at least a portion of the object side surface of the second lens 12 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the second lens 12 corresponding to the optical axis may be a convex surface.

[0664] The third lens 13 may have positive optical power, and at least a portion of the object side surface of the third lens 13 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the third lens 13 corresponding to the optical axis may be a concave surface.

[0665] The fourth lens 14 may have negative optical power, and at least a portion of the object side surface of the fourth lens 14 corresponding to the optical axis may be a concave surface, and at least a portion of the image side surface of the fourth lens 14 corresponding to the optical axis may be a convex surface.

[0666] The fifth lens 15 may have positive power, and at least a portion of the object side surface of the fifth lens 15 corresponding to the optical axis may be a convex surface, and at least a portion of the image side surface of the fifth lens 15 corresponding to the optical axis may be a concave surface.

[0667] The sixth lens 16 may have negative optical power, and at least a portion of the object side surface of the sixth lens 16 corresponding to the optical axis may be a concave surface, and at least a portion of the image side surface of the sixth lens 16 corresponding to the optical axis may be a convex surface.

[0668] When the lens assembly 10 is in the infinite state, see Fig.34 As shown, the second lens unit 102 is closer to the first lens unit 101, and is relatively far from the filter 30 and the image sensor 20. When the lens assembly 10 switches from the infinity state to the macro state, the second lens unit 102 moves along the optical axis L toward the image side.

[0669] Fig.35A schematic diagram of the simulation structure of a lens assembly in a camera module provided in the twelfth embodiment of the present application when in a macro state.

[0670] See also Fig.35 As shown, when the lens assembly 10 is in the macro state, the second lens unit 12 is closer to the filter 30 and the image sensor 20 , and is relatively far away from the first lens unit 101 .

[0671] Among them, the curvature radius R11 of the object side surface of the first lens 11 is 10.14, the curvature radius R12 of the image side surface of the first lens 11 is -43, the focal length f1 of the first lens 11 is 14.1, and the first lens 11 satisfies |(R11+R12) / f1|=2.33.

[0672] The focal length EFL1 of the lens assembly 10 when it is in the infinite state is 15.35, and the ratio of the focal length f1 of the first lens 11 to the focal length EFL1 of the lens assembly 10 when it is in the infinite state is f1 / EFL1=0.95.

[0673] The refractive index of the first lens 11 is Nd1=1.544.

[0674] The aperture number F#1 when the lens assembly 10 is in the infinity state is 1.88. The aperture number F#2 when the lens assembly 10 is in the macro state is 1.85.

[0675] The magnification of the lens assembly 10 when in the macro state is Mag=0.47x.

[0676] The focal length G1 of the first lens unit 101 is 8.64, and the ratio of the focal length G1 of the first lens unit 101 to the focal length EFL1 of the lens assembly 10 when it is in an infinite state is |G1 / EFL1|=0.56.

[0677] The focal length G2 of the second lens unit 102 is -8.71, and the ratio of the focal length G2 of the second lens unit 102 to the focal length EFL1 of the lens assembly 10 at infinity |G2 / EFL1| is 0.56.

[0678] The focal length EFL2 of the lens assembly 10 when in the macro state is 7.34, the total optical length TTL of the lens assembly 10 is 18.9, and the ratio of the focal length EFL2 of the lens assembly 10 when in the macro state to the total optical length TTL of the lens assembly 10 is |EFL2 / TTL|=0.39.

[0679] The ratio of the focal length EFL1 when the lens assembly 10 is in the infinite state to the focal length EFL2 when the lens assembly 10 is in the macro state is EFL1 / EFL2 = 2.09.

[0680] The following is an example of the optical parameters of each lens in this embodiment.

[0681] Table 12.1 shows the optical parameters of each lens in a camera module provided in Example 12 of the present application.

[0682]

[0683]

[0684] Among them, L1 is the first lens 11, L2 is the second lens 12, L3 is the third lens 13, L4 is the fourth lens 14, L5 is the fifth lens 15, L6 is the sixth lens 16, and IR is the filter 30.

[0685] The specific illustration of S0-S14 can be found in the first embodiment, which will not be described in detail in the embodiment.

[0686] The meanings of parameters such as the radius of curvature, thickness, material, and Y semi-aperture can also be found in Example 1, and will not be repeated in this embodiment.

[0687] Table 12.2 shows the aspheric coefficients of each lens in a lens assembly provided in Example 12 of the present application.

[0688] Curvature radius R Cone coefficient K A4 A6 A8 A10 A12 A14 S1 10.64 0 -4.76E-04 1.08E-05 -7.91E-06 2.63E-06 -7.60E-07 1.57E-07 S2 -40.64 0 1.96E-03 8.83E-04 -1.15E-03 4.92E-04 -1.22E-04 2.02E-05 S3 6.00 0 -4.01E-03 -1.59E-04 3.63E-04 -6.15E-04 3.69E-04 -1.23E-04 S4 3.26 -1 2.93E-03 -1.20E-02 1.02E-02 -6.21E-03 2.65E-03 -8.01E-04 S5 5.07 0 1.03E-02 -1.39E-02 1.07E-02 -5.98E-03 2.43E-03 -7.21E-04 S6 -7.65 0 7.89E-04 9.95E-06 -3.41E-04 4.79E-04 -3.14E-04 1.30E-04 S7 -6.80 0 -3.40E-02 8.59E-02 -8.60E-02 6.13E-02 -3.26E-02 1.30E-02 S8 5.73 0 -6.92E-02 9.84E-02 -8.77E-02 5.98E-02 -3.06E-02 1.15E-02 S9 4.94 0 -3.30E-02 6.45E-03 -4.37E-04 -1.44E-04 3.03E-05 -1.61E-06 S10 -65.58 0 2.35E-02 -4.18E-02 2.79E-02 -1.08E-02 2.48E-03 -3.32E-04 S11 -20.26 0 2.94E-02 -3.45E-02 1.10E-02 9.50E-03 -1.36E-02 8.55E-03 S12 9.16 0 -1.66E-03 -1.32E-03 1.37E-03 -9.78E-04 4.65E-04 -1.51E-04 A16 A18 A20 A22 A24 A26 A28 A30 S1 -2.23E-08 2.17E-09 -1.44E-10 6.47E-12 -1.86E-13 3.12E-15 -2.30E-17 0.00E+00 S2 -2.32E-06 1.87E-07 -1.03E-08 3.73E-10 -7.95E-12 7.59E-14 0.00E+00 0.00E+00 S3 2.66E-05 -3.99E-06 4.27E-07 -3.24E-08 1.71E-09 -5.99E-11 1.25E-12 -1.17E-14 S4 1.74E-04 -2.73E-05 3.11E-06 -2.54E-07 1.45E-08 -5.47E-10 1.23E-11 -1.25E-13 S5 1.56E-04 -2.45E-05 2.80E-06 -2.29E-07 1.31E-08 -4.96E-10 1.12E-11 -1.14E-13 S6 -3.67E-05 7.36E-06 -1.05E-06 1.07E-07 -7.58E-09 3.51E-10 -9.62E-12 1.17E-13 S7 -3.88E-03 8.70E-04 -1.45E-04 1.78E-05 -1.55E-06 9.14E-08 -3.25E-09 5.26E-11 S8 -3.15E-03 6.11E-04 -8.11E-05 6.84E-06 -3.06E-07 2.56E-09 2.17E-10 0.00E+00 S9 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S10 2.41E-05 -7.42E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S11 -3.49E-03 1.01E-03 -2.10E-04 3.13E-05 -3.25E-06 2.24E-07 -9.17E-09 1.69E-10 S12 3.42E-05 -5.49E-06 6.24E-07 -4.98E-08 2.71E-09 -9.58E-11 1.97E-12 -1.80E-14

[0689] As can be seen from Table 12.2, each lens in the lens assembly 10 is an aspherical lens, that is, the lens assembly 10 includes 12 aspherical surfaces. The aspherical surface type Z of each lens in the lens assembly 10 can be calculated by the following aspherical surface formula:

[0690]

[0691] Among them, parameter c=1 / R, R is the radius of curvature, r is the distance from a point on the optical surface to the optical axis, Z is the aspheric surface vector height of the point along the optical axis, k is the quadratic surface coefficient of the surface, i is the aspheric coefficient term, in this embodiment i is 30, and Ai is the aspheric coefficient.

[0692] Table 12.3 shows the focal lengths of the lenses and lens units in a lens assembly provided in Example 12 of the present application.

[0693] f1 / mm f2 / mm f3 / mm f4 / mm f5 / mm f6 / mm 14.1 -11.32 6.08 -5.67 7.75 -11.08

[0694] Among them, f1, f2, f3, f4, f5, and f6 are the focal lengths of the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, and the sixth lens 16, respectively.

[0695] The lens assembly 10 adopts the above-mentioned two lens unit frameworks, and through the reasonable allocation of the optical focal length of the two lens units and the first lens, the number of lenses, and the focal length, thickness, refractive index, Abbe number, etc. of each lens can achieve the characteristics of large aperture, small size, low cost and high resolution of the lens assembly 10. The optical parameters of the lens assembly 10 composed of the above-mentioned lenses can be shown in the following Table 12.4.

[0696] Table 12.4 shows the optical parameters of a lens assembly provided in Example 12 of the present application.

[0697]

[0698] It can be seen from Table 12.4 that the lens assembly 10 provided in Example 12 of the present application has the characteristics of large aperture and small total optical length, which can realize the long-focus telephoto function, ensure high-quality imaging in scenes such as long-range shooting, and can also realize the macro function with high magnification and resolution, ensure high-definition imaging in scenes such as close-up shooting.

[0699] It should be noted that the numerical values ​​and numerical ranges involved in the embodiments of the present application are approximate values ​​and may have a certain range of errors, which can be considered negligible by those skilled in the art.

[0700] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances. The terms "first", "second", "third", "fourth", etc. (if any) are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0701] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application have been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A lens assembly, characterized in that: It includes at least a first lens unit and a second lens unit arranged in sequence from the object side to the image side along the optical axis. The first lens unit and the second lens unit respectively include lenses with optical power. The first lens unit has a positive optical power, and the second lens unit has a negative optical power; The second lens unit is movably arranged along the optical axis. The second lens unit moves along the optical axis toward the image side to switch the lens assembly from an infinite focus state to a macro state; The lens of the first lens unit at least includes a first lens, and the first lens is located on the side of the first lens unit adjacent to the object side; The first lens satisfies the conditional formula: |(R11 + R12) / f1| ≥ 3.32, where R11 is the curvature radius of the object side surface of the first lens, R12 is the curvature radius of the image side surface of the first lens, and f1 is the focal length of the first lens; The lens assembly satisfies the conditional formula: 0.75 < f1 / EFL1 < 1, where EFL1 is the focal length of the lens assembly in the infinite focus state.

2. The lens assembly according to claim 1, characterized in that: The aperture number F#1 of the lens assembly in the infinite focus state satisfies the conditional formula: 1.0 < F#1 < 2.

5.

3. The lens assembly according to claim 1 or 2, characterized in that: The aperture number F#2 of the lens assembly in the macro state satisfies the conditional formula: 1.0 < F#2 < 3.

4. The lens assembly according to any one of claims 1 to 3, characterized in that: The magnification Mag of the lens assembly in the macro state satisfies the conditional formula: 0.15x < Mag < 0.5x.

5. The lens assembly according to any one of claims 1 to 4, characterized in that: The lens assembly also satisfies the conditional formula: 0.1 < |G1 / EFL1| < 0.9, where G1 is the focal length of the first lens unit.

6. The lens assembly according to any one of claims 1 to 5, characterized in that: The lens assembly also satisfies the conditional formula: 0.1 < |G2 / EFL1| < 0.9, where G2 is the focal length of the second lens unit.

7. The lens assembly according to any one of claims 1 to 6, characterized in that: The lens assembly also satisfies the conditional formula: 0.15 < |EFL2 / TTL| < 0.95, where TTL is the overall optical length of the lens assembly, and EFL2 is the focal length of the lens assembly in the macro state.

8. The lens assembly according to any one of claims 1 to 7, characterized in that: The lens assembly also satisfies the conditional formula: 1.1 < EFL1 / EFL2 < 3.2, where EFL2 is the focal length of the lens assembly in the macro state.

9. The lens assembly according to any one of claims 1 to 8, characterized in that: The refractive index Nd1 of the first lens satisfies the conditional formula: 1.4 < Nd1 < 1.

85.

10. The lens assembly according to any one of claims 1 to 9, characterized in that: The first lens unit includes a first lens, a second lens, and a third lens arranged in sequence from the object side to the image side along the optical axis. The first lens has a positive optical power, the second lens has a negative optical power, and the third lens has a positive optical power; The second lens unit includes a fourth lens, a fifth lens, and a sixth lens arranged in sequence from the object side to the image side along the optical axis. The fourth lens has a negative optical power, the fifth lens has a positive optical power, and the sixth lens has a negative optical power.

11. The lens assembly according to any one of claims 1 to 10, characterized in that: The number of lens units included in the lens assembly is two.

12. The lens assembly according to any one of claims 1 to 11, characterized in that: The lens assembly satisfies the conditional formula |(R11 + R12) / f1| > 4.

2.

13. The lens assembly according to any one of claims 1 to 12, characterized in that: The lens assembly satisfies the conditional formula 0.75 < f1 / EFL1 ≤ 0.

88.

14. The lens assembly according to any one of claims 1 to 13, characterized in that: The lens assembly satisfies the conditional formula 0.1 < |G1 / EFL1| ≤ 0.

6.

15. The lens assembly according to any one of claims 1 to 14, characterized in that: The lens assembly satisfies the conditional formula 0.56≤|G1 / EFL1|<0.

9.

16. The lens assembly according to any one of claims 1 to 15, characterized in that: The lens assembly satisfies the condition 0.56≤|EFL2 / TTL|<0.

95.

17. The lens assembly according to any one of claims 1 to 16, characterized in that: The lens assembly satisfies the condition 0.15<|EFL2 / TTL|<0.

56.

18. The lens assembly according to any one of claims 1 to 17, characterized in that: The lens assembly satisfies the condition 1.1 <EFL1 / EFL2≤1.67。 19. A camera module, characterized in that: The lens assembly at least comprises an image sensor and any one of claims 1 to 18, wherein the image sensor is located on a side of the lens assembly facing the image side.

20. An electronic device, characterized in that: The invention comprises at least a shell and the camera module as described in claim 19, wherein the camera module is arranged on the shell.

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