Optical lens, camera module and electronic equipment

Abstract

The invention provides an optical lens, a camera module and electronic equipment, relates to the technical field of photography and video recording, and is used for solving the problem that an existing camera module is relatively large in size. The optical lens provided by the invention comprises a first fixed lens group, a second fixed lens group, an anti-shake lens group and a focusing lens group which are arranged along the optical axis direction of the optical lens. Wherein each of the first fixed lens group, the second fixed lens group, the anti-shake lens group and the focusing lens group comprises at least one lens with focal power. The second fixed lens group, the anti-shake lens group and the focusing lens group are all located on the image side of the first fixed lens group, and at least one of the anti-shake lens group and the focusing lens group is located between the first fixed lens group and the second fixed lens group. The optical lens can reduce the size of the camera module, and is beneficial to lightening and thinning of the electronic equipment. In addition, distortion and field curvature can be corrected, and the imaging quality can be improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of photography and video technology, and in particular to an optical lens, a camera module, and an electronic device. Background Art

[0002] As people's demand for electronic devices (such as mobile phones, tablet computers, smart watches, etc.) increases year by year, electronic devices have more functions. For example, electronic devices generally have photography and video functions, and the implementation of this function is based on camera modules.

[0003] With the advancement of photography and video technology, camera modules are increasingly equipped with adjustable focus and anti-shake features, making them suitable for a variety of shooting scenarios. However, existing camera modules are relatively large, occupying significant space within electronic devices and hindering their slimming down. Summary of the Invention

[0004] The embodiments of the present application provide an optical lens, a camera module, and an electronic device for solving the problem of large size of existing camera modules.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides an optical lens, comprising a first fixed lens group, a second fixed lens group, an anti-shake lens group, and a focusing lens group arranged along the optical axis direction of the optical lens.

[0007] The first fixed lens group, the second fixed lens group, the anti-shake lens group, and the focus lens group each include at least one lens having optical power. The second fixed lens group, the anti-shake lens group, and the focus lens group are all located on the image side of the first fixed lens group, and at least one of the anti-shake lens group and the focus lens group is located between the first and second fixed lens groups.

[0008] The optical lens provided in the first aspect of the present application, by separately providing an anti-shake lens group and a focus lens group, when performing anti-shake compensation, the driving component only needs to drive the anti-shake lens group to move, and when performing focusing, the driving component only needs to drive the anti-shake lens group to move. In other words, compared to driving the entire optical lens to move, the driving force required to drive a single anti-shake lens group and a single focus lens group is smaller, so the load requirement for the driving component is lower, that is, a smaller driving component can be used, which is beneficial to reducing the volume of the camera module. In addition, a first fixed lens group and a second fixed lens group are also provided in the optical lens. The first fixed lens group can play the role of converging light, thereby reducing the aperture of other lens groups on the image side of the first fixed lens group, which is beneficial to reducing the volume of the optical lens. The use of the second fixed lens group can compensate for the aberrations of the optical lens to a certain extent, correct its distortion and field curvature, and is beneficial to improving the imaging quality.

[0009] In conjunction with the first aspect, in one possible implementation, the optical lens further includes a light deflecting component located on the image side of the first fixed lens group. The light deflecting component may be a reflective mirror, a reflective prism, or the like. In this manner, the light deflecting component can be used to deflect and fold the optical axis of the optical lens. In other words, the light deflecting component can convert the thickness of the optical lens into its length, enabling the optical lens to achieve a telephoto effect while maintaining a relatively small thickness, thereby facilitating the thinning and lightweight development of electronic devices.

[0010] In conjunction with the first aspect, in another possible implementation, the first fixed lens group includes a reflective prism and at least one lens with optical power. With this structure, the first fixed lens group can change the direction of light through the reflective prism. For example, this optical lens can be used in a periscope camera module.

[0011] In conjunction with the first aspect, in another possible implementation, at least one of the anti-shake lens group, the focus lens group, and the second fixed lens group comprises a doublet lens. Doublet lenses have minimal light energy loss and can correct spherical aberration, coma, and chromatic aberration to a certain extent, thereby improving image quality.

[0012] In conjunction with the first aspect, in another possible implementation, the optical lens further includes an infrared filter located on the image side of the last lens in the optical lens. The infrared filter effectively filters out infrared light, allowing only visible light to enter, thereby improving image quality and clarity. Furthermore, it prevents infrared light from generating heat on the surface of the optical device, thereby preventing infrared light from affecting image quality and clarity.

[0013] In conjunction with the first aspect, in another possible implementation, the optical lens further includes an aperture, located on the object side of the first fixed lens group. Alternatively, the aperture extends around the object side of the first fixed lens. With this arrangement, the aperture can improve image clarity, control the range of the imaged object space, and control the brightness of the image plane. Furthermore, by adjusting the size of the aperture, a larger entrance pupil diameter can be achieved. Thus, while maintaining the same focal length of the optical lens, a larger aperture and diffraction limit can be achieved, thereby improving the imaging quality of the optical lens.

[0014] In combination with the first aspect, in another possible implementation, the optical lens satisfies the following relationship: 0.4<CT MAX / TTL<0.7. Wherein, TTL is the total optical length of the optical lens along its own optical axis. CT MAX It is the maximum value of the distance between any two adjacent elements of the first fixed lens group, the second fixed lens group, the anti-shake lens group and the focusing lens group along the extending direction of the optical axis of the optical lens.

[0015] The above relationship is achieved by controlling CT MAX / TTL is higher than the lower limit of 0.4, which can ensure that there is enough space between the two adjacent lens groups in the optical lens to install the light deflection components, which is beneficial to reducing the volume of the optical lens. MAX / TTL is less than the upper limit of 0.7, which is beneficial to ensuring the imaging quality of the optical system.

[0016] In conjunction with the first aspect, in another possible implementation, the optical lens satisfies the following relationship: 0.4<EFL / TTL<0.8, where EFL is the system focal length of the optical lens.

[0017] The above relationship limits the ratio range of the system focal length and total length of the optical lens, which is beneficial to improving the resolution of the optical lens.

[0018] In conjunction with the first aspect, in another possible implementation, the optical lens satisfies the following relationship: 3.1<FNO<4.5, where FNO is the aperture value of the optical lens.

[0019] The above relationship limits the aperture value range of the optical lens, which is beneficial to ensure that the optical lens has high imaging quality while also having a small size and good light intake performance.

[0020] In conjunction with the first aspect, in another possible implementation, the optical lens satisfies the following relationship: 0.1<F1 / EFL<1, where F1 is the focal length of the first fixed lens group.

[0021] The above relationship limits the ratio range of the focal length of the first fixed lens group to the focal length of the optical lens system, thereby rationally allocating the optical power of the first fixed lens group, facilitating the control of the direction of light after entering the first fixed lens group, and converging the light, which is conducive to reducing the aperture size of other subsequent lens groups.

[0022] In combination with the first aspect, in another possible implementation, the optical lens satisfies the following relationship: EFL AF / EFL<0.6. Among them, EFL AF is the focal length of the focusing lens group.

[0023] The above relationship limits the ratio range of the focal length of the focus lens group to the focal length of the optical lens system, thereby rationally allocating the optical power of the focus lens group, thereby reducing the travel of the focus lens group when moving for focusing, and also reducing the tolerance sensitivity of the focus lens group.

[0024] In combination with the first aspect, in another possible implementation, the optical lens satisfies the following relationship: -4<EFL OIS / EFL<4. Among them, EFL OIS is the focal length of the image stabilization lens group.

[0025] The above relationship limits the ratio range of the focal length of the anti-shake lens group to the focal length of the optical lens system, thereby rationally allocating the optical power of the anti-shake lens group, thereby reducing the movement range of the anti-shake lens group during anti-shake compensation, and at the same time reducing the tolerance sensitivity of the anti-shake lens group.

[0026] In combination with the first aspect, in another possible implementation, the optical lens satisfies the following relationship: 0.01<CT AF / TTL<0.2. Among them, CT AF It is the center thickness of the focusing lens group in the direction of extension of the optical axis of the optical lens.

[0027] The above relationship limits the range of the ratio of the center thickness of the focusing lens group to the total optical length of the optical lens, which is beneficial to reducing the overall length of the focusing lens group, that is, reducing the size of the focusing lens group, thereby reducing the load of the voice coil motor and improving the life and response speed of the voice coil motor.

[0028] In combination with the first aspect, in another possible implementation, the optical lens satisfies the following relationship: 0.01<CT OIS / TTL<0.2. Among them, CT OIS It is the center thickness of the anti-shake lens group in the direction of extension of the optical axis of the optical lens.

[0029] The above relationship limits the range of the ratio of the center thickness of the anti-shake lens group to the total optical length of the optical lens, which is beneficial to reducing the overall length of the anti-shake lens group, that is, reducing the size of the anti-shake lens group, and then reducing the load of the driving components, thereby improving the life and response speed of the driving components.

[0030] In combination with the first aspect, in another possible implementation, the optical lens satisfies the following relationship: 2.5<CT MAX / EPD<4.5. Wherein, EPD is the entrance pupil diameter of the optical lens.

[0031] The above relationship limits the range of the ratio of the maximum center distance between two adjacent lens groups in the optical lens to the entrance pupil diameter, so as to facilitate the addition of light deflection components (such as reflectors, reflecting prisms, etc.) between the two lens groups while ensuring the amount of light entering the optical lens.

[0032] In a second aspect, the present application provides a camera module, which includes a substrate, an image sensor and the optical lens of the first aspect mentioned above.

[0033] The image sensor is arranged on the substrate and has an imaging surface. The optical lens is electrically connected to the substrate, and the image side of the optical lens faces the imaging surface of the image sensor.

[0034] In conjunction with the second aspect, in a possible implementation, the optical lens satisfies the following relationship: 0.4<CT MAX / TTL<0.7. Wherein, TTL is the total optical length of the optical lens along its own optical axis; CT MAX It is the maximum value of the distance between any two adjacent elements of the five elements, namely the first fixed lens group, the second fixed lens group, the anti-shake lens group, the focus lens group and the image sensor, along the extending direction of the optical axis of the optical lens.

[0035] In conjunction with the second aspect, in another possible implementation, the optical lens satisfies the following relationship: 2.5<CT MAX / EPD<4.5. Wherein, EPD is the entrance pupil diameter of the optical lens; CT MAX It is the maximum value of the distance between any two adjacent elements of the five elements, namely the first fixed lens group, the second fixed lens group, the anti-shake lens group, the focus lens group and the image sensor, along the extending direction of the optical axis of the optical lens.

[0036] It can be understood that the beneficial effects that can be achieved by the camera module described in the second aspect and any possible implementation thereof provided above can be referred to the beneficial effects in the first aspect and any possible implementation thereof, and will not be repeated here.

[0037] In a third aspect, the present application provides an electronic device comprising a housing, a mainboard, and the camera module of the second aspect, wherein the mainboard and the camera module are both disposed in the housing, and the camera module is electrically connected to the mainboard.

[0038] It can be understood that the beneficial effects that can be achieved by the electronic device described in the third aspect and any possible implementation thereof provided above can refer to the beneficial effects in the first aspect and any possible implementation thereof, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A schematic diagram of the overall structure of an electronic device provided in an embodiment of the present application;

[0040] Figure 2 for Figure 1 Structural explosion diagram of electronic equipment;

[0041] Figure 3 A schematic structural diagram of a camera module provided in an embodiment of the present application;

[0042] Figure 4 for Figure 3 Exploded view of the camera module structure;

[0043] Figure 5 Schematic diagram of the relative positions of the lens module and the image sensor;

[0044] Figure 6 A schematic structural diagram of an optical lens provided in an embodiment of the present application;

[0045] Figure 7 A schematic structural diagram of another optical lens provided in an embodiment of the present application;

[0046] Figure 8 A schematic structural diagram of another optical lens provided in an embodiment of the present application;

[0047] Figure 9 A schematic structural diagram of another optical lens provided in an embodiment of the present application;

[0048] Figure 10 A schematic structural diagram of another optical lens provided in an embodiment of the present application;

[0049] Figure 11 A schematic structural diagram of another optical lens provided in an embodiment of the present application;

[0050] Figure 12 A schematic diagram of the structure of the optical lens provided in Example 1;

[0051] Figure 13This is the astigmatism field curve diagram after the light passes through the optical lens in Example 1;

[0052] Figure 14 This is the distortion curve of light after passing through the optical lens in Example 1;

[0053] Figure 15 A schematic diagram of the structure of the optical lens provided for Example 2;

[0054] Figure 16 This is the astigmatism field curve diagram after the light passes through the optical lens in Example 2;

[0055] Figure 17 This is a distortion curve diagram of light after passing through the optical lens in Example 2;

[0056] Figure 18 This is the astigmatism field curve diagram after the light passes through the optical lens in Example 3;

[0057] Figure 19 This is the distortion curve of light after passing through the optical lens in Example 3;

[0058] Figure 20 This is the astigmatism field curve diagram after the light passes through the optical lens in Example 4;

[0059] Figure 21 This is a distortion curve diagram of light after passing through the optical lens in Example 4;

[0060] Figure 22 A schematic diagram of the structure of the optical lens provided for Example 5;

[0061] Figure 23 This is the astigmatism field curve diagram after the light passes through the optical lens in Example 5;

[0062] Figure 24 This is a distortion curve diagram of light after passing through the optical lens in Example 5;

[0063] Figure 25 A schematic diagram of the structure of the optical lens provided for Example 6;

[0064] Figure 26 This is the astigmatism field curve diagram after the light passes through the optical lens in Example 6;

[0065] Figure 27 This is the distortion curve of light after passing through the optical lens in Example 6.

[0066] Reference numerals:

[0067] 01. Electronic device; 10. Display module; 11. Transparent cover; 12. Display screen; 20. Housing; 21. Back cover; 22. Frame; 30. Camera module; 31. Substrate; 32. Image sensor; 32a. Imaging surface; 33. Flexible circuit board; 34. Lens module; 35. Housing; 36. Optical lens; 360. Optical axis; 361. First fixed lens group; 362. Second fixed lens group; 363. Anti-shake lens group; 364. Focus lens group; 365. Light conversion Folding component; 365a, first light bending component; 365b, second light bending component; 3651, first reflector; 3652, second reflector; 3653, reflecting prism; 366, infrared filter; 36a, first lens; 36b, second lens; 36c, third lens; 36d, fourth lens; 36e, fifth lens; 36f, sixth lens; 36g, seventh lens; 36h, eighth lens; 36i, ninth lens; 40, main board; 50, camera decorative cover. DETAILED DESCRIPTION

[0068] In order to make the purpose, technical solutions and advantages of the application more clear, the present application is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0069] In the description of this application, it should be clarified that the terms "vertical," "transverse," "longitudinal," "front," "rear," "left," "right," "upper," "lower," and "horizontal," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used solely to facilitate the description of this application. They do not imply that the devices or components referred to must have specific orientations or positions, and therefore should not be construed as limitations on this application. The term "quantity" should also not be construed as a limitation on this application.

[0070] In the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0071] For ease of understanding, the technical terms involved in this application are explained and described below.

[0072] The object side and the object side surface are separated by the lens / lens group. The side where the subject is located is the object side, and the surface of the lens / lens group close to the object side can be called the object side surface.

[0073] The image side and the image side surface are separated by the lens / lens group. The side where the image of the subject is located is the image side, and the surface of the lens / lens group close to the image side can be called the image side surface.

[0074] Focal length, also known as focal length, is a measure of the convergence or divergence of light in an optical system. It refers to the vertical distance from the optical center of a lens or lens group to the focal plane, when an infinitely distant scene is formed into a sharp image on the focal plane. From a practical perspective, it can be understood as the distance from the lens center to the film plane. For fixed-focus lenses, the position of the optical center is fixed; for zoom lenses, changes in the optical center result in changes in the lens' focal length.

[0075] The aperture is a device used to control the amount of light that passes through the lens and reaches the imaging surface of the camera body. It is usually located inside the lens. The aperture size is expressed as F / .

[0076] The aperture (F-number) is a relative value calculated by dividing the focal length of a lens by the diameter of the lens through which light passes (the inverse of the relative aperture). The smaller the F-number, the more light enters the image per unit time. A larger F-number reduces the depth of field, blurring the background in the image, similar to the effect of a telephoto lens.

[0077] Focal power is equal to the difference between the image-side and object-side convergences of the beam, and it characterizes the ability of an optical system to deflect light. Assuming the refractive index of air is approximately 1, focal power is generally expressed as the reciprocal of the image-side focal length.

[0078] Total track length (TTL) refers to the total length from the center of the object side of the first lens to the center of the image side of the last lens, and is the main factor in determining the height of the camera module.

[0079] The optical axis is the direction in which light is transmitted through an optical system, referenced to the principal ray at the center of the field of view. For symmetrical transmissive systems, it generally coincides with the centerline of rotation of the optical system.

[0080] The entrance pupil is the common entrance for light beams emitted from all points on the object surface.

[0081] The entrance pupil diameter is the effective aperture that limits the incident light beam.

[0082] Field curvature, also known as image curvature, is a phenomenon in optical systems. When a lens exhibits field curvature, the intersection of the entire light beam does not coincide with the ideal image point. Although a sharp image point can be obtained at each specific point, the entire image plane is curved. This makes it difficult to see the entire image plane simultaneously during microscopic examination, making observation and photography difficult.

[0083] Distortion, also known as distortion, is the degree to which the image formed by an optical system is distorted relative to the object itself. Distortion is caused by spherical aberration. The height at which the chief rays of light from different fields of view intersect the Gaussian image plane after passing through the optical system is not equal to the ideal image height. The difference between the two is the distortion. Therefore, distortion only changes the position of off-axis object points on the ideal plane, distorting the image shape but not affecting image clarity.

[0084] A doublet lens is a lens made by gluing two lenses together. The curvature radius of the two lens surfaces is equal, or one of the surfaces is flat. This combination of two lenses is an effective way to achieve a short focal length, high magnification, and good image quality.

[0085] Long focal length lenses, also known as telephoto lenses or telephoto lenses, are essential for photographing distant objects. They can accurately capture details and capture even difficult-to-access subjects. Especially when photographing wildlife, a suitable long focal length lens offers photographers numerous creative opportunities. However, due to their long focal length, long focal length lenses require a large axial space for adjusting the optical path. This results in an excessively long overall optical length, making it difficult to miniaturize the lens, which in turn fails to meet the trend toward thinner and lighter mobile devices.

[0086] Based on this, an embodiment of the present application provides an electronic device. Specifically, the electronic device can be a portable electronic device or other types of electronic devices. For example, the electronic device can be a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a monitor, a camera, a personal computer, a notebook computer, a wearable device, etc. For the sake of convenience, the following examples are all based on the example of a mobile phone as the electronic device.

[0087] See Figure 1 and Figure 2 As shown, Figure 1 This is a schematic diagram of the overall structure of the electronic device 01 provided in an embodiment of the present application. Figure 2 For the above Figure 1 Exploded diagram of the structure of electronic device 01. As can be seen from the above, in this embodiment, electronic device 01 is a mobile phone, and electronic device 01 can be approximately rectangular. Electronic device 01 can include a display module 10, a housing 20, a camera module 30, a mainboard 40, and a camera decorative cover 50.

[0088] For the convenience of the following description, an XYZ coordinate system is established, defining the width direction of the electronic device 01 as the X-axis direction, the length direction of the electronic device 01 as the Y-axis direction, and the thickness direction of the electronic device 01 as the Z-axis direction. Therefore, this application does not make any special restrictions on this. It is understood that Figure 1 and Figure 2 Only some components of the electronic device 10 are schematically shown, and the actual shapes, sizes, positions and structures of these components are not affected by the present invention. Figure 1 and Figure 2 In some other examples, the electronic device 10 may not include the camera decorative cover 50.

[0089] The above-mentioned display module 10 is used to display images, videos, etc. The display module 10 may include a translucent cover plate 11 and a display screen 12 (English name: panel 1, also called a display panel), and the translucent cover plate 11 and the display screen 12 are stacked. The material of the translucent cover plate 11 includes but is not limited to glass. For example, the translucent cover plate 11 can adopt an ordinary translucent cover plate to protect the display screen to avoid damage to the display screen due to external force, and can play a dust-proof role. Alternatively, the translucent cover plate 11 can also adopt a translucent cover plate with a touch function, so that the electronic device 01 has a touch function, which makes it more convenient for users to use. Therefore, the present application does not specifically limit the specific material of the translucent cover plate 11.

[0090] In addition, the display screen 12 may be a flexible display screen or a rigid display screen. For example, the display screen 12 may be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, a mini light-emitting diode (LED) display screen, a micro light-emitting diode (microLED) display screen, a micro organic light-emitting diode (OLED) display screen, a quantum dot light-emitting diode (QLED) display screen, a liquid crystal display (LCD), etc.

[0091] The housing 20 is used to protect the electronic components within the electronic device 01. The housing 20 may include a back cover 21 and a frame 22. The back cover 21 is located on the side of the display screen 12 away from the transparent cover plate 11 and is stacked with the transparent cover plate 11 and the display screen 12. The frame 22 is located between the transparent cover plate 11 and the back cover 21. The frame 22 is fixed to the back cover 21. The transparent cover plate 11 is fixed to the frame 22, so that the transparent cover plate 11, the back cover 21, and the frame 22 form a storage cavity within the electronic device 01. The display screen 12, the mainboard 40, and the camera module 30 are all disposed within this internal storage space.

[0092] The motherboard 40 is used to house the electronic components of the electronic device 10 and to achieve electrical connections between the electronic components. For example, the electronic components may be a control chip (e.g., a system on a chip, SOC), a graphics processing unit (GPU), a universal storage (UFS), an earpiece, a flash module, and the camera module 30.

[0093] The camera module 30 is used to shoot videos or pictures. The camera module 30 may be of upright or periscope type. Figure 3 and Figure 4 As shown, Figure 3 This is a structural diagram of a camera module 30 provided in an embodiment of the present application. Figure 4 for Figure 3 Exploded diagram of the structure of the middle camera module 30.

[0094] The camera module 30 may include a substrate 31, an image sensor 32, a lens module 34, and a housing 35. The housing 35 is fixed to the substrate 31. The lens module 34 is located within the housing 35 and is electrically connected to the substrate 31. The image sensor 32 is disposed on the substrate 31 and has an imaging surface 32a. A flexible printed circuit board (FPC) 33 has one end electrically connected to the substrate 31 and the other end electrically connected to the mainboard 40.

[0095] For example, the camera module 30 may be a telephoto camera, i.e., its lens module 34 may be a telephoto lens having a focal length greater than that of a standard lens. Therefore, the camera module 30 can capture distant objects or scenes, expanding the range of shooting scenarios for the electronic device 01 and improving the user experience.

[0096] The camera module 30 has an object side and an image side. The object side may be the object side of the lens module 34 inside the camera module 30, and the image side may be the image side of the lens module 34 inside the camera module 30. The object side of the lens module 34 faces the rear cover 21, and the image side of the lens module 34 faces the imaging surface 32a of the image sensor 32. The rear cover 21 is provided with a mounting notch ( Figure 2 Not shown), the camera decorative cover 50 (as Figure 2 The object side of the lens module 34 faces the light-transmitting window, so that external light can pass through the light-transmitting window, enter the lens module 34 from the object side, and then be emitted from the image side of the lens module 34 to illuminate the image sensor 32. The image sensor 32 then converts the received light signal into a digital signal and outputs it to the digital signal processor (DSP) for image signal enhancement and compression optimization, and finally transmits it to the Figure 2 An image is displayed on the display screen 12 shown.

[0097] It should be noted that, in the camera module 30, the optical axis of the lens module 34 ( Figure 4 The dashed line (in the middle) can be parallel to the thickness direction (i.e., the Z-axis direction) of the electronic device 01, the distribution direction of the substrate 31 and the flexible circuit board 33 can be parallel to the width direction (i.e., the X-axis direction) of the electronic device 01, and the direction perpendicular to the above two directions in the camera module 30 is parallel to the length direction (i.e., the Y-axis direction) of the electronic device 01. It will be understood that the above-mentioned arrangement of the camera module 30 is only an example, that is, the camera module 30 can also be arranged in the housing of the electronic device 01 in other ways.

[0098] In addition, the camera module 30 of the electronic device 01 can also realize auto focus (AF, Auto Focus) and optical image stabilization (OIS, Optical Image Stabilizer), so that the camera module 30 can be applied to a variety of shooting scenes. Specifically, the camera module 30 can also include a driving component ( Figure 4 The driving component is disposed in the housing 35. For example, the driving component may be a voice coil motor (VCM).

[0099] The driving component is connected to the lens module 34. Figure 5 As shown, Figure 5Figure 3 is a schematic diagram illustrating the relative positions of the lens module 34 and the image sensor 32 (parallel to the XZ plane). The drive component can drive the lens module 34 to move along the Z axis, thereby adjusting the distance between the lens module 34 and the imaging surface 32a of the image sensor 32, so that light emitted from the lens module 34 is focused on the imaging surface 32a, thereby achieving autofocus. The drive component can also drive the lens module 34 to move in a direction perpendicular to the Z axis (i.e., parallel to the XY plane) to compensate for shaking during shooting, thereby achieving optical image stabilization.

[0100] However, since the driving component is pushing the entire lens module 34 to move along the Z-axis when focusing, this requires the driving component to have a larger rated load. In order to meet the load requirements, larger driving components are generally used, which causes the volume of the camera module 30 to increase, which is not conducive to the lightweight and thinning of the electronic device 01.

[0101] Similarly, when performing anti-shake compensation, the driving component pushes the entire lens module 34 to move in a direction perpendicular to the Z axis (parallel to the XY plane), which requires the driving component to have a larger rated load. In order to meet the load requirements, larger driving components are generally used, which causes the volume of the camera module 30 to increase, which is not conducive to the lightweight and thinning of the electronic device 01.

[0102] In addition, since the telephoto lens is large in size, when the lens module 34 is focusing, the driving components of the camera module 30 need to have a large stroke. Therefore, the overall volume of the camera module 30 is further increased, which also affects the focusing accuracy and thus the performance of the camera module 30.

[0103] To solve the above problems, the present invention provides an optical lens 36, which can be applied to the camera module 30. Figure 6 As shown, Figure 6 Schematic diagram of the structure of an optical lens 36 provided in an embodiment of the present application (parallel to the XZ plane). The optical lens 36 includes a first fixed lens group 361, a second fixed lens group 362, an anti-shake lens group 363, and a focus lens group 364 arranged along the optical axis 360 of the optical lens 36.

[0104] The second fixed lens group 362, the anti-shake lens group 363 and the focus lens group 364 are all located on the image side of the first fixed lens group 361, and at least one of the anti-shake lens group 363 and the focus lens group 364 is located between the first fixed lens group 361 and the second fixed lens group 362. Figure 6 The first fixed lens group 361 , the anti-shake lens group 363 , the focus lens group 364 and the second fixed lens group 362 are arranged in sequence along the optical axis 360 of the optical lens 36 .

[0105] Furthermore, the first fixed lens group 361 includes at least one lens with optical power. The second fixed lens group 362 includes at least one lens with optical power. The anti-shake lens group 363 includes at least one lens with optical power. The focusing lens group 364 includes at least one lens with optical power. Thus, the lenses of the optical lens system 36 are divided into multiple groups for achieving different functions.

[0106] Thus, by separately providing the anti-shake lens group 363 and the focus lens group 364, the driving component only needs to drive the anti-shake lens group 363 to move when performing anti-shake compensation, and only needs to drive the anti-shake lens group 363 to move when performing focusing. In other words, compared to driving the entire optical lens 36, the driving force required to drive the single anti-shake lens group 363 and the single focus lens group 364 is smaller, thus lowering the load requirement on the driving component. In other words, smaller driving components can be used, thereby reducing the size of the camera module 30.

[0107] In addition, the optical lens 36 is provided with a first fixed lens group 361 and a second fixed lens group 362. The first fixed lens group 361 can be used to converge light, thereby reducing the aperture of the other lens groups on the image side of the first fixed lens group 361, thereby reducing the size of the optical lens 36. The second fixed lens group 362 can compensate for the aberrations of the optical lens 36 to a certain extent, correcting its distortion and field curvature, which is beneficial to improving imaging quality.

[0108] For some possible implementations, please see Figure 6 As shown. The first fixed lens group 361 can be composed of a plurality of lenses arranged at intervals, and at least one of the plurality of lenses has optical focal length. For example, Figure 6 The first fixed lens group 361 includes a first lens 36a and a second lens 36b, each of which has optical power. The first lens 36a and the second lens 36b can be used to converge light, that is, the optical axis 360 of the optical lens 36 extends in one direction, so that the optical lens 36 can be used in the upright camera module 30.

[0109] For some possible implementations, see Figure 7 As shown, Figure 7 A schematic diagram of the structure of another optical lens 36 provided in an embodiment of the present application (parallel to the XZ plane). The first fixed lens group 361 may include a reflecting prism 3653 and at least one lens with optical power. For example, Figure 7The first fixed lens group 361 in the optical lens 36 includes a first lens 36a, a second lens 36b, and a reflecting prism 3653. Both the first lens 36a and the second lens 36b have optical power. The first lens 36a is located on the object side of the reflecting prism 3653, and the second lens 36b is located on the image side of the reflecting prism 3653. The first fixed lens group 361 adopts this structure. The first lens 36a is used to focus light, while the reflecting prism 3653 enables the first fixed lens group 361 to change the propagation direction of light. In other words, the direction of the optical axis 360 of the optical lens 36 is changed by the reflecting prism 3653, making the optical lens 36 suitable for use in the periscope camera module 30. The second lens 36b can further focus the light reflected by the reflecting prism 3653.

[0110] The subsequent multiple lens groups can further refract the light, thereby further adjusting the light propagation path to converge the light, which is conducive to reducing the size of the subsequent lens groups.

[0111] In some possible implementations, at least one of the anti-shake lens group 363, the focus lens group 364, and the second fixed lens group 362 includes a doublet lens. Figure 7 As shown, Figure 7 Focusing lens assembly 364 in FIG. 36 is composed of two lenses: a third lens 36c and a fourth lens 36d. The image-side surface of the third lens 36c and the object-side surface of the fourth lens 36d are both spherical surfaces with equal radii of curvature. The image-side surface of the third lens 36c and the object-side surface of the fourth lens 36d are bonded together with a transparent adhesive. This design minimizes light energy loss when light passes through the doublet lens. Furthermore, the doublet lens can correct spherical aberration, coma, and chromatic aberration to a certain extent, thereby improving image quality.

[0112] In order to further reduce the size of the optical lens 36, see Figure 8 As shown, Figure 8 A schematic structural diagram of another optical lens 36 provided in an embodiment of the present application (parallel to the XZ plane). The optical lens 36 may further include a light deflection component 365. The light deflection component 365 is located on the image side of the first fixed lens group 361. In this way, the optical axis 360 of the optical lens 36 can be deflected and folded by using the light deflection component 365. In other words, the light deflection component 365 can convert the thickness of the optical lens 36 along the Z-axis direction into a length parallel to the XY plane, so that the optical lens 36 can achieve a telephoto effect while maintaining a relatively small thickness, which is conducive to the thinness of the electronic device 01.

[0113] It can be understood that, one light deflection component 365 can be provided, or multiple light deflection components 365 can be dispersedly provided on the optical path of the optical lens 36, and can be reasonably selected according to actual needs. In this way, the relative positions of the first fixed lens group 361, the anti-shake lens group 363, the focusing lens group 364 and the image sensor 32 (i.e., the imaging surface 32a) can be set more flexibly, which is conducive to increasing the applicable scenarios of the optical lens 36.

[0114] The light deflecting component 365 can be a reflector, a reflecting prism, etc., and this application does not impose any special limitation on this.

[0115] For example, see Figure 8 As shown, Figure 8 The optical lens in the above Figure 6 A light deflecting component 365 is added to the optical lens. This component is a reflective prism and is located on the object side of the first fixed lens group 361. Light enters the light deflecting component 365 along the Z axis, is reflected by the component, and then enters the first fixed lens group 361 along the X axis.

[0116] For another example, see Figure 9 As shown, Figure 9 This is a schematic structural diagram of another optical lens 36 provided in an embodiment of the present application (parallel to the XZ plane). Figure 9 The optical lens in the above Figure 6 A light deflection component 365 is added to the optical lens. Located between the anti-shake lens group 363 and the focus lens group 364, the light deflection component 365 consists of a first reflector 3651 and a second reflector 3652. Light emitted from the anti-shake lens group 363 is first reflected by the first reflector 3651 onto the second reflector 3652, and then by the second reflector 3652 onto the focus lens group 364.

[0117] For another example, see Figure 10 As shown, Figure 10 This is a schematic structural diagram of another optical lens 36 provided in an embodiment of the present application. Figure 10 The optical lens in the above Figure 7 A light deflection component 365 is added to the optical lens. The light deflection component 365 is composed of a first reflector 3651 and a second reflector 3652, and is located between the anti-shake lens group 363 and the focus lens group 364.

[0118] The light enters the first lens 36a of the first fixed lens group 361 along the Z-axis direction, is then reflected by the reflecting prism 3653 and emitted from the second lens 36b along the X-axis direction to the first reflective mirror 3651 of the light deflecting component 365, is then reflected by the first reflective mirror 3651 to the second reflective mirror 3652, and is then reflected by the second reflective mirror 3652 and emitted along the Y-axis direction to the third lens 36c of the focusing lens group 364.

[0119] For another example, see Figure 11 As shown, Figure 11 This is a schematic structural diagram of another optical lens 36 provided in an embodiment of the present application. Figure 11 The optical lens in the above Figure 6 Two additional light deflection components 365 are added to the optical lens: a first light deflection component 365a and a second light deflection component 365b. The first light deflection component 365a is a reflecting prism located on the object side of the first fixed lens group 361. The second light deflection component 365b, consisting of a first reflective mirror 3651 and a second reflective mirror 3652, is located between the anti-shake lens group 363 and the focusing lens group 364.

[0120] Light enters the first light deflecting component 365a along the Z-axis direction. After being reflected by the first light deflecting component 365a, it enters the first fixed lens group 361 along the X-axis direction. It is then refracted by the first fixed lens group 361 and enters the anti-shake lens group 363. Light emitted from the anti-shake lens group 363 is first reflected by the first reflector 3651 of the second light deflecting component 365b to the second reflector 3652. It is then reflected by the second reflector 3652 and enters the focusing lens group 364 along the Z-axis direction.

[0121] For some possible implementations, please see Figures 6 to 11 As shown. The optical lens 36 may further include an infrared filter 366. The infrared filter 366 is located on the image side of the last lens in the optical lens 36. For example, Figure 10 Mid-infrared filter 366 is located between second fixed lens group 362 and imaging surface 32a. Infrared filter 366 effectively filters out infrared light, allowing only visible light to enter imaging surface 32a, thereby improving image quality and clarity. It also prevents infrared light from generating heat on imaging surface 32a, thereby preventing infrared light from affecting image quality and clarity.

[0122] In some possible implementations, the optical lens 36 may further include a stop ( Figures 6 to 11(not shown) The diaphragm can be positioned on the object side of the first fixed lens group 361. Alternatively, the diaphragm can extend around the object side of the first fixed lens group 361. For example, the diaphragm can be positioned at the edge of the object side of the first lens 36a in the first fixed lens group 361. With this arrangement, the diaphragm can improve image clarity, control the range of the imaged object space, and control the brightness of the image plane. Furthermore, by adjusting the size of the diaphragm, a larger entrance pupil diameter can be achieved. Thus, while maintaining the focal length of the optical lens 36, a larger aperture and diffraction limit can be achieved, thereby improving the imaging quality of the optical lens 36.

[0123] In some possible implementations, the optical lens 36 satisfies the following relationship: 0.4<CT MAX / TTL<0.7. For example, CT MAX The value of / TTL can be 0.41, 0.43, 0.45, 0.46, 0.471, 0.48, 0.5, 0.511, 0.526, 0.532, 0.54, 0.542, 0.551, 0.56, 0.57, 0.59, 0.6, 0.62, 0.621, 0.65, 0.68, 0.683, 0.692, etc.

[0124] Wherein, TTL is the total optical length of the optical lens 3636. CT MAX It is the maximum value of the distance between any two adjacent elements of the five elements, namely the first fixed lens group 361 , the second fixed lens group 362 , the anti-shake lens group 363 , the focus lens group 364 and the image sensor 32 , along the extending direction of the optical axis 360 of the optical lens 36 .

[0125] The above relationship is achieved by controlling CT MAX / TTL is higher than the lower limit of 0.4, which can ensure that there is enough space between two adjacent lens groups in the optical lens 36 to install the light deflection component 365. Control CT MAX / TTL is less than the upper limit of 0.8, which is beneficial to ensuring the imaging quality of the optical system.

[0126] In some possible implementations, the optical lens 36 further satisfies the following relationship: 0.4<EFL / TTL<0.8. For example, the values of EFL / TTL can be 0.41, 0.45, 0.485, 0.51, 0.52, 0.526, 0.531, 0.535, 0.54, 0.57, 0.58, 0.595, 0.6, 0.61, 0.65, 0.68, 0.691, 0.7, 0.705, 0.71, 0.73, 0.75, 0.77, 0.78, 0.795, etc.

[0127] Wherein, EFL is the system focal length of the optical lens 36. The above relationship limits the ratio range of the system focal length and the total length of the optical lens 36, which is beneficial to improving the resolution of the optical lens 36.

[0128] In some possible implementations, the optical lens 36 further satisfies the following relationship: 3.1 < FNO < 4.5. For example, the value of FNO can be 3.2, 3.22, 3.28, 3.35, 3.4, 3.43, 3.46, 3.5, 3.59, 3.6, 3.67, 3.72, 3.77, 3.82, 3.9, 3.98, 4, 4.1, 4.2, 4.3, 4.31, 4.4, 4.45, 4.49, etc., where FNO is the aperture value of the optical lens 36.

[0129] The above relationship limits the aperture value range of the optical lens 36, which is conducive to ensuring that the optical lens 36 has a relatively high imaging quality while also having a relatively small size and a relatively good light intake performance.

[0130] In some possible implementations, the optical lens 36 satisfies the following relationship: 0.1 < F1 / EFL < 1. For example, the value of f1 / EFL can be 0.11, 0.132, 0.153, 0.16, 0.167, 0.2, 0.241, 0.25, 0.27, 0.3, 0.35, 0.4, 0.41, 0.42, 0.43, 0.452, 0.475, 0.59, 0.61, 0.7, 0.71, 0.75, 0.8, 0.802, 0.85, 0.89, 0.9, 0.91, 0.94, 0.971, 0.988, etc., where F1 is the focal length of the first fixed lens group 361.

[0131] The above relationship limits the ratio range of the focal length of the first fixed lens group 361 to the focal length of the optical lens system 36, thereby reasonably allocating the optical focal length of the first fixed lens group 361, facilitating the control of the direction of light after entering the first fixed lens group 361, and converging the light, which is conducive to reducing the aperture size of other subsequent lens groups.

[0132] In some possible implementations, the optical lens 36 also satisfies the following relationship: EFL AF / EFL<0.6. For example, EFL AF The value of / EFL can be 0.05, 0.1, 0.13, 0.157, 0.18, 0.2, 0.22, 0.28, 0.291, 0.3, 0.311, 0.335, 0.4, 0.42, 0.45, 0.5, 0.53, 0.543, 0.57, 0.59, etc. Among them, EFL AF is the focal length of the focusing lens group 364.

[0133] The above relationship limits the ratio range of the focal length of the focusing lens group 364 to the focal length of the optical lens 36 system, thereby reasonably allocating the optical focal length of the focusing lens group 364, thereby reducing the travel of the focusing lens group 364 when moving for focusing, and at the same time reducing the tolerance sensitivity of the focusing lens group 364.

[0134] In some possible implementations, the optical lens 36 also satisfies the following relationship: -4<EFL OIS / EFL<4. For example, EFL OIS The value of / EFL can be -3.9, -3.65, -3.1, -2.85, -2.3, -2.11, -2, -1.9, -1.8, -1.5, -1.4, -1.22, -1.1, -1.069, -1, -0.9, -0.787, -0.712, -0.5, 0, 0.5, 0.8, 1, 1.254, 1.456, 1.6, 1.8, 1.85, 1.9, 2, 2.11, 2.3, 2.85, 3.1, 3.65, 3.95, etc. Among them, EFL OIS is the focal length of the anti-shake lens group 363.

[0135] The above relationship limits the ratio range of the focal length of the anti-shake lens group 363 to the focal length of the optical lens 36 system, thereby reasonably allocating the optical focal length of the anti-shake lens group 363, thereby reducing the movement stroke of the anti-shake lens group 363 during anti-shake compensation, and at the same time reducing the tolerance sensitivity of the anti-shake lens group 363.

[0136] In some possible implementations, the optical lens 36 also satisfies the following relationship: 0.01<CT AF / TTL<0.2. For example, CT AF The value of / TTL can be 0.02, 0.04, 0.05, 0.06, 0.08, 0.09, 0.1, 0.115, 0.122, 0.131, 0.135, 0.138, 0.14, 0.142, 0.144, 0.15, 0.156, 0.159, 0.16, 0.168, 0.17, 0.174, 0.179, 0.194, etc. Among them, CT AF It is the center thickness of the focusing lens group 364 in the extending direction of the optical axis 360 of the optical lens 36.

[0137] The above relationship limits the ratio range of the center thickness of the focusing lens group 364 to the total optical length of the optical lens 36, which is beneficial to reducing the overall length of the focusing lens group 364, that is, reducing the size of the focusing lens group 364, thereby reducing the load of the voice coil motor and improving the life and response speed of the voice coil motor.

[0138] In some possible implementations, the optical lens 36 also satisfies the following relationship: 0.01<CT OIS / TTL<0.2. For example, CT OIS The value of / TTL / TTL can be 0.015, 0.02, 0.03, 0.049, 0.05, 0.06, 0.08, 0.089, 0.95, 0.1, 0.117, 0.126, 0.13, 0.135, 0.138, 0.14, 0.1491, 0.1495, 0.151, 0.156, 0.159, 0.165, 0.169, 0.17, 0.173, 0.179, 0.18, 0.19, etc. Among them, CT OIS It is the center thickness of the anti-shake lens group 363 in the direction of the extended optical axis 360 of the optical lens 36.

[0139] The above relationship limits the ratio range of the center thickness of the anti-shake lens group 363 to the total optical length of the optical lens 36, which is beneficial to reducing the overall length of the anti-shake lens group 363, that is, reducing the size of the anti-shake lens group 363, thereby reducing the load of the driving components and improving the life and response speed of the driving components.

[0140] In some possible implementations, the optical lens 36 also satisfies the following relationship: 2.5<CT MAX / EPD<4.5. For example, CT MAX The value of / EPD can be 2.53, 2.6, 2.65, 2.683, 2.7, 2.75, 2.8, 2.917, 3, 3.1, 3.128, 3.22, 3.24, 3.255, 3.27, 2.29, 3.3, 3.311, 3.324, 3.34, 3.36, 3.365, 3.38, 3.4, 3.422, 3.45, 3.8, 4, 4.15, 4.34, 4.49, etc. Wherein, EPD is the entrance pupil diameter of the optical lens 36.

[0141] The above relationship limits the ratio range of the maximum center distance between two adjacent lens groups in the optical lens 36 to the entrance pupil diameter, so as to facilitate adding a light deflection component 365 (such as a reflector, a reflecting prism, etc.) between the two lens groups, thereby further reducing the size of the optical lens 36.

[0142] It can be understood that the above-mentioned center thickness and the distance between two adjacent lens groups are based on the point through which the optical axis 360 passes, that is, the distance through which the optical axis 360 passes through the lens group is the center thickness of the lens group, and the length of the optical axis 360 between two adjacent lens groups is the distance between the two adjacent lens groups.

[0143] Based on this, the camera module 30 using the above-mentioned optical lens 36 (the optical lens 36 satisfies the above-mentioned relationship) is exemplified below.

[0144] Example 1

[0145] Example 1 of this application provides a camera module 30, which includes an optical lens 36. Figure 12 As shown, Figure 12 This is a schematic diagram of the structure of the optical lens 36 provided in Example 1. The optical lens 36 includes a first fixed lens group 361, an anti-shake lens group 363, a focus lens group 364, a second fixed lens group 362, and an infrared filter 366, which are sequentially distributed along the extension direction of the optical axis 360 of the optical lens 36.

[0146] The first fixed lens group 361 includes three lenses: a first lens 36a, a second lens 36b, and a third lens 36c. The first lens 36a has an object-side surface S1 and an image-side surface S2, with the edge of the object-side surface S1 of the first lens 36a serving as the aperture stop of the optical lens 36. The second lens 36b has an object-side surface S3 and an image-side surface S4. The third lens 36c has an object-side surface S5 and an image-side surface S6.

[0147] The anti-shake lens assembly 363 includes two lenses: a fourth lens 36d and a fifth lens 36e. The fourth lens 36d and the fifth lens 36e are cemented together to form a doublet. In this case, the fourth lens 36d has an object-side surface S7, and the fifth lens 36e has an image-side surface S9. The image-side surface of the fourth lens 36d and the object-side surface of the fifth lens 36e are cemented together to form a common cemented surface S8.

[0148] The focusing lens group 364 has only one lens, ie, the sixth lens 36 f . The sixth lens 36 f has an object-side surface S10 and an image-side surface S11 .

[0149] The second fixed lens group 362 includes two lenses: a seventh lens 36g and an eighth lens 36h. The seventh lens 36g and the eighth lens 36h are cemented together to form a doublet. In this case, the seventh lens 36g has an object-side surface S12, and the eighth lens 36h has an image-side surface S14. The image-side surface of the seventh lens 36g and the object-side surface of the eighth lens 36h are cemented together to form a common cemented surface S13.

[0150] The infrared filter 366 has an object-side surface S15 and an image-side surface S16 .

[0151] Table 1a below provides the design parameters of each lens and filter 366 in Example 1, as shown below:

[0152] Table 1a

[0153]

[0154] The sag height of the aspheric surface in each of the above lens groups can be calculated using the following formula:

[0155]

[0156] Among them, Z is the aspheric height, r is the radial coordinate of the aspheric surface, c is the curvature of the fixed point ball of the aspheric surface, K is the quadratic surface constant, A i Table 1b below lists the coefficients k, A2, A4, A6, A8, A10, A12, A14, A16, and A18 for the aspheric surface profiles of each lens group in Example 1.

[0157] Table 1b

[0158] Surface number S1 S3 S4 S5 S6 S10 S11 K 1.432E+01 0.000E+00 -4.399E+00 1.353E-02 0.000E+00 -1.000E+00 0.000E+00 A2 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 A4 -8.404E-05 -2.703E-04 -1.259E-04 -2.054E-05 -1.290E-05 5.886E-05 8.526E-05 A6 -1.151E-06 2.273E-05 2.272E-05 -2.577E-06 -2.630E-06 -2.049E-06 -7.438E-06 A8 2.480E-08 -1.750E-06 -1.646E-06 2.911E-07 9.358E-08 9.874E-08 5.814E-07 A10 -3.507E-09 7.316E-08 5.690E-08 -1.340E-08 1.168E-08 1.398E-09 -2.493E-08 A12 1.911E-10 -1.538E-09 -8.320E-10 3.174E-10 -7.624E-10 -2.660E-10 5.593E-10 A14 -6.531E-12 1.291E-11 2.824E-12 -1.742E-12 1.568E-11 8.769E-12 -5.188E-12 A16 1.174E-13 0.000E+00 0.000E+00 0.000E+00 -4.972E-14 -9.903E-14 0.000E+00 A18 -9.185E-16 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00

[0159] Table 1c below gives the basic parameters of the optical lens 36 in Example 1, as shown below:

[0160] Table 1c

[0161] System focal length EFL 48mm Aperture value FNO 3.88 Field of view FOV 8.4° Entrance pupil diameter EPD 12.371mm

[0162] In addition, in Example 1, the maximum value CT of the distance between any two adjacent elements of the five elements, namely, the first fixed lens group 361, the second fixed lens group 362, the anti-shake lens group 363, the focus lens group 364, and the image sensor 32, along the direction of extension of the optical axis 360 of the optical lens 36 is MAX is 36.040 mm. That is, in this example, CT MAX It is the distance from the center of the image-side surface S9 of the fifth lens 36 e in the anti-shake lens group 363 to the center of the object-side surface S10 of the sixth lens 36 f in the focusing lens group 364 .

[0163] Focal length EFL of focusing lens group 364 AF The focal length EFL of the anti-shake lens group 363 is 19.249mm. OIS The focal length F1 of the first fixed lens group 361 is 36.768 mm.

[0164] The center thickness CT of the focusing lens group 364 in the extending direction of the optical axis 360 of the optical lens 36 is AF is 2.258 mm. That is, in this example, CT AF is the distance from the center of the object-side surface S10 to the center of the image-side surface S11 of the sixth lens 36 f in the focusing lens group 364 .

[0165] The center thickness CT of the anti-shake lens group 363 in the extending direction of the optical axis 360 of the optical lens 36 is OISis 1.919 mm. That is, in this example, CT OIS It is the distance from the center of the object-side surface S7 of the fourth lens 36 d to the center of the image-side surface S9 of the fifth lens 36 e in the anti-shake lens group 363 .

[0166] The total optical length TTL of the optical lens 36 is 65.754 mm. In this example, TTL is the distance from the center of the object-side surface S1 of the first lens 36 a in the first fixed lens group 361 to the center of the image-side surface S16 of the infrared filter 366 .

[0167] According to the values of the above parameters, we can calculate:

[0168] CT MAX / TTL=0.569;F1 / EFL=0.869;EFL AF / EFL=0.458;EFL OIS / EFL=-0.628;

[0169] CT AF / TTL=0.023;CT OIS / TTL=0.039;EFL / TTL=0.700;CT MAX / EPD=3.072.

[0170] It can be seen that the values of each conditional expression in this example are all within the aforementioned limited range.

[0171] See Figure 13 As shown, Figure 13 The astigmatism field curve of the light after passing through the optical lens 36 in Example 1. The horizontal axis is the focus offset, the vertical axis is the image height, and the reference wavelength of the light is 546nm. The solid line X is the focus offset curve in the meridian direction, and the dotted line Y is the focus offset curve in the sagittal direction. Figure 13 It can be seen that the focus offsets in the meridian and sagittal directions are both controlled within the range of -0.01 mm to 0, and the meridian curve and the sagittal curve are relatively close. In other words, the optical lens 36 in Example 1 has a small astigmatism and can converge most of the light on the correct focus point, making the image clearer and sharper.

[0172] See Figure 14 As shown, Figure 14 The distortion curve of light after passing through the optical lens 36 in Example 1 is shown in FIG. The horizontal axis is the distortion rate, the vertical axis is the image height, and the reference wavelength of the light is 546 nm. Figure 14 It can be seen that the distortion rate is controlled within the range of -2% to 0, that is, the image captured by the optical lens 36 in Example 1 has a small degree of deformation and low degree of distortion.

[0173] Example 2

[0174] Example 2 of this application provides a camera module 30, which includes an optical lens 36. Figure 15 As shown, Figure 15 This is a schematic diagram of the structure of the optical lens 36 provided in Example 2. The optical lens 36 includes a first fixed lens group 361, an anti-shake lens group 363, a focus lens group 364, a second fixed lens group 362, and an infrared filter 366, which are sequentially distributed along the extension direction of the optical axis 360 of the optical lens 36.

[0175] The first fixed lens group 361 includes three lenses: a first lens 36a, a second lens 36b, and a third lens 36c. The first lens 36a has an object-side surface S1 and an image-side surface S2, with the edge of the object-side surface S1 of the first lens 36a serving as the aperture stop of the optical lens 36. The second lens 36b has an object-side surface S3 and an image-side surface S4. The third lens 36c has an object-side surface S5 and an image-side surface S6.

[0176] The anti-shake lens assembly 363 includes two lenses: a fourth lens 36d and a fifth lens 36e. The fourth lens 36d and the fifth lens 36e are cemented together to form a doublet. In this case, the fourth lens 36d has an object-side surface S7, and the fifth lens 36e has an image-side surface S9. The image-side surface of the fourth lens 36d and the object-side surface of the fifth lens 36e are cemented together to form a common cemented surface S8.

[0177] Focusing lens assembly 364 includes two lenses: a sixth lens 36f and a seventh lens 36g. Sixth lens 36f and seventh lens 36g are cemented together to form a doublet. Sixth lens 36f has an object-side surface S10, while seventh lens 36g has an image-side surface S12. The object-side surface of sixth lens 36f is cemented with the image-side surface of fifth lens 36e to form a common cemented surface S11.

[0178] The second fixed lens group 362 includes two lenses: an eighth lens 36h and a ninth lens 36i. The eighth lens 36h and the ninth lens 36i are cemented together to form a doublet. In this case, the eighth lens 36h has an object-side surface S13, and the ninth lens 36i has an image-side surface S15. The image-side surface of the eighth lens 36h and the object-side surface of the ninth lens 36i are cemented together to form a common cemented surface S14.

[0179] The infrared filter 366 has an object-side surface S16 and an image-side surface S17 .

[0180] Table 2a below provides the design parameters of each lens and infrared filter 366 in Example 2, as shown below:

[0181] Table 2a

[0182]

[0183]

[0184] The sag height of the aspheric surface in each of the above lens groups can be calculated using the following formula:

[0185]

[0186] Among them, Z is the aspheric height, r is the radial coordinate of the aspheric surface, c is the curvature of the fixed point ball of the aspheric surface, K is the quadratic surface constant, A i Table 2b below lists the coefficients k, A2, A4, A6, A8, A10, A12, A14, A16, and A18 for the aspheric surface profiles of each lens group in Example 2.

[0187] Table 2b

[0188] Surface number S1 S3 S4 S5 S6 K 1.732E+01 0.000E+00 5.873E+01 1.193E+00 0.000E+00 A2 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 A4 -7.562E-05 2.444E-04 2.277E-04 2.763E-05 1.088E-04 A6 -1.005E-06 1.007E-05 9.832E-06 -3.572E-06 -5.038E-06 A8 6.064E-10 -8.954E-07 -7.219E-07 1.950E-07 1.108E-07 A10 -1.378E-09 2.795E-08 1.289E-08 -8.569E-09 4.884E-09 A12 8.437E-11 -4.100E-10 8.787E-11 2.669E-10 -2.981E-10 A14 -3.398E-12 2.418E-12 -3.559E-12 -2.780E-12 6.631E-12 A16 6.849E-14 0.000E+00 0.000E+00 0.000E+00 -4.471E-14 A18 -6.073E-16 0.000E+00 0.000E+00 0.000E+00 0.000E+00

[0189] Table 2c below gives the basic parameters of the optical lens 36 in Example 2, as shown below:

[0190] Table 2c

[0191] System focal length EFL 46mm Aperture value FNO 3.78 Field of view FOV 9.32° Entrance pupil diameter EPD 12.169mm

[0192] In addition, in Example 2, the maximum value CT of the distance between any two adjacent elements of the five elements, namely, the first fixed lens group 361, the second fixed lens group 362, the anti-shake lens group 363, the focus lens group 364, and the image sensor 32, along the direction of extension of the optical axis 360 of the optical lens 36 is MAX is 37.3825 mm. That is, in this example, CT MAX It is the distance from the center of the image-side surface S9 of the fifth lens 36 e in the anti-shake lens group 363 to the center of the object-side surface S10 of the sixth lens 36 f in the focusing lens group 364 .

[0193] Focal length EFL of focusing lens group 364 AF The focal length EFL of the anti-shake lens group 363 is 21.066mm. OIS The focal length F1 of the first fixed lens group 361 is 39.963 mm.

[0194] The center thickness CT of the focusing lens group 364 in the extending direction of the optical axis 360 of the optical lens 36 is AF is 1.526 mm. That is, in this example, CT AFIt is the distance from the center of the object-side surface S10 of the sixth lens 36 f to the center of the image-side surface S12 of the seventh lens 36 g in the focusing lens group 364 .

[0195] The center thickness CT of the anti-shake lens group 363 in the extending direction of the optical axis 360 of the optical lens 36 is OIS is 2.595 mm. That is, in this example, CT OIS It is the distance from the center of the object-side surface S7 of the fourth lens 36 d to the center of the image-side surface S9 of the fifth lens 36 e in the anti-shake lens group 363 .

[0196] The total optical length TTL of the optical lens 36 is 65.754 mm. In this example, TTL is the distance from the center of the object-side surface S1 of the first lens 36 a in the first fixed lens group 361 to the center of the image-side surface S17 of the infrared filter 366 .

[0197] According to the values of the above parameters, it can be calculated that in this example,

[0198] CT MAX / TTL=0.569;F1 / EFL=0.869;EFL AF / EFL=0.458;EFL OIS / EFL=-0.628;

[0199] CT AF / TTL=0.023;CT OIS / TTL=0.039;EFL / TTL=0.700;CT MAX / EPD=3.072.

[0200] It can be seen that the values of each conditional expression in this example are all within the aforementioned limited range.

[0201] See Figure 16 As shown, Figure 16 The astigmatism field curve of the light after passing through the optical lens 36 in Example 2. The horizontal axis is the focus offset, the vertical axis is the image height, and the reference wavelength of the light is 546nm. The solid line X is the focus offset curve in the meridional direction, and the dotted line Y is the focus offset curve in the sagittal direction. Figure 16 It can be seen that the focus offset in the meridional direction is controlled within the range of -0.01mm to 0.005mm, and the focus offset in the sagittal direction is controlled within the range of -0.02mm to 0.005mm. The meridional curve and the sagittal curve are relatively close, that is, the astigmatism of the optical lens 36 in Example 2 is small, and most of the light can be converged on the correct focus point, making the image clearer and sharper.

[0202] See Figure 17 As shown, Figure 17The distortion curve of light after passing through the optical lens 36 in Example 2 is shown in FIG. The horizontal axis is the distortion rate, the vertical axis is the image height, and the reference wavelength of the light is 546 nm. Figure 17 It can be seen that the distortion rate is controlled within the range of -2% to 0, that is, the image captured by the optical lens 36 in Example 2 has a small degree of deformation and low degree of distortion.

[0203] Example 3

[0204] Please return to see Figure 15 The structure of the optical lens 36 in the camera module 30 provided in Example 3 of this application is the same as that in Example 2 above, except that the design parameters of the lens and the infrared filter 366 are slightly changed, which will not be repeated here.

[0205] Table 3a below provides the design parameters of each lens and infrared filter 366 in Example 3, as shown below:

[0206] Table 3a

[0207]

[0208]

[0209] The sag height of the aspheric surface in each of the above lens groups can be calculated using the following formula:

[0210]

[0211] Among them, Z is the aspheric height, r is the radial coordinate of the aspheric surface, c is the curvature of the fixed point ball of the aspheric surface, K is the quadratic surface constant, A i Table 3b below lists the coefficients k, A2, A4, A6, A8, A10, A12, A14, A16, and A18 for the aspheric surface shapes of each lens group in Example 3.

[0212] Table 3b

[0213] Surface number S1 S3 S4 S5 S6 K 3.580E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 A2 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 A4 -3.625E-06 2.702E-05 7.394E-05 -3.787E-05 -1.226E-05 A6 -6.628E-08 -3.008E-06 -3.315E-06 1.369E-06 1.468E-06 A8 -2.840E-09 3.637E-07 7.903E-07 3.220E-07 -1.040E-07 A10 3.320E-10 -2.531E-08 -7.432E-08 -4.746E-08 2.683E-09 A12 -1.724E-11 9.952E-10 3.484E-09 2.546E-09 -1.054E-11 A14 4.751E-13 -2.054E-11 -8.053E-11 -6.303E-11 -9.348E-13 A16 -6.789E-15 1.727E-13 7.093E-13 5.821E-13 -3.838E-15 A18 3.962E-17 0.000E+00 6.481E-16 0.000E+00 0.000E+00

[0214] Table 3c below gives the basic parameters of the optical lens 36 in Example 3, as shown below:

[0215] Table 3c

[0216] System focal length EFL 47.5mm Aperture value FNO 3.78 Field of view FOV 9.06° Entrance pupil diameter EPD 12.566mm

[0217] In addition, in Example 3, the maximum value CT of the distance between any two adjacent elements of the five elements, namely, the first fixed lens group 361, the second fixed lens group 362, the anti-shake lens group 363, the focus lens group 364, and the image sensor 32, along the direction of extension of the optical axis 360 of the optical lens 36 isMAX It is 38.819mm.

[0218] Focal length EFL of focusing lens group 364 AF The focal length EFL of the anti-shake lens group 363 is 17.661mm. OIS The focal length F1 of the first fixed lens group 361 is 40.636 mm. The center thickness CT of the focusing lens group 364 in the direction of extension of the optical axis 360 of the optical lens 36 is AF The center thickness CT of the anti-shake lens group 363 in the direction of extension of the optical axis 360 of the optical lens 36 is 3.299 mm. OIS The total optical length TTL of the optical lens 36 is 66.330 mm.

[0219] According to the values of the above parameters, it can be calculated that in this example,

[0220] CT MAX / TTL=0.586;F1 / EFL=0.856;EFL AF / EFL=0.372;EFL OIS / EFL=-0.737;

[0221] CT AF / TTL=0.050;CT OIS / TTL=0.021;EFL / TTL=0.716;CT MAX / EPD=3.089.

[0222] It can be seen that the values of each conditional expression in this example are all within the aforementioned limited range.

[0223] See Figure 18 As shown, Figure 18 The astigmatism field curve of the light after passing through the optical lens 36 in Example 3 is shown in FIG. The horizontal axis is the focus offset, the vertical axis is the image height, and the reference wavelength of the light is 546 nm. The solid line X is the focus offset curve in the meridional direction, and the dotted line Y is the focus offset curve in the sagittal direction. Figure 18 It can be seen that the focus offset in the meridional direction is controlled within the range of -0.02mm to 0, and the focus offset in the sagittal direction is controlled within the range of -0.02mm to 0. The meridional curve and the sagittal curve are relatively close, that is, the optical lens 36 in Example 3 has a small astigmatism and can converge most of the light on the correct focus point, making the image clearer and sharper.

[0224] See Figure 19 As shown, Figure 19The distortion curve of light after passing through the optical lens 36 in Example 3 is shown in FIG. The horizontal axis is the distortion rate, the vertical axis is the image height, and the reference wavelength of the light is 546 nm. Figure 19 It can be seen that the distortion rate is controlled within the range of -2% to 0, that is, the image captured by the optical lens 36 in Example 3 has a small degree of deformation and low degree of distortion.

[0225] Example 4

[0226] Please return to see Figure 15 The structure of the optical lens 36 in the camera module 30 provided in Example 4 of this application is the same as that in Example 2 above, except that the design parameters of the lens and the infrared filter 366 are slightly changed, which will not be repeated here.

[0227] Table 4a below provides the design parameters of each lens and infrared filter 366 in Example 4, as shown below:

[0228] Table 4a

[0229]

[0230] The sag height of the aspheric surface in each of the above lens groups can be calculated using the following formula:

[0231]

[0232] Among them, Z is the aspheric height, r is the radial coordinate of the aspheric surface, c is the curvature of the fixed point ball of the aspheric surface, K is the quadratic surface constant, A i Table 4b below lists the coefficients k, A2, A4, A6, A8, A10, A12, A14, A16, and A18 for the aspheric surface shapes of the lens groups in Example 4.

[0233] Table 4b

[0234] Surface number S1 S3 S4 S5 S6 K 4.077E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 A4 -1.810E-06 3.360E-05 9.052E-05 -6.180E-07 1.752E-05 A6 8.810E-08 -2.893E-06 -4.661E-06 -3.602E-06 -4.499E-07 A8 -1.250E-08 3.602E-07 1.031E-06 8.965E-07 -8.143E-08 A10 8.180E-10 -2.606E-08 -8.719E-08 -7.841E-08 1.961E-08 A12 -3.530E-11 1.064E-09 3.201E-09 3.142E-09 -1.529E-09 A14 9.080E-13 -2.271E-11 -2.803E-11 -5.204E-11 5.446E-11 A16 -1.260E-14 1.968E-13 -1.053E-12 1.849E-13 -7.358E-13 A18 7.170E-17 0.000E+00 1.911E-14 0.000E+00 0.000E+00

[0235] Table 4c below gives the basic parameters of the optical lens 36 in Example 4, as shown below:

[0236] Table 4c

[0237] System focal length EFL 47.509mm Aperture value FNO 3.68 Field of view FOV 9° Entrance pupil diameter EPD 12.888mm

[0238] In addition, in Example 4, the maximum value CT of the distance between any two adjacent elements of the five elements, namely, the first fixed lens group 361, the second fixed lens group 362, the anti-shake lens group 363, the focus lens group 364, and the image sensor 32, along the direction of extension of the optical axis 360 of the optical lens 36 is MAX It is 38.531mm.

[0239] Focal length EFL of focusing lens group 364 AF The focal length EFL of the anti-shake lens group 363 is 17.688mm. OIS The focal length F1 of the first fixed lens group 361 is 38.987 mm. The center thickness CT of the focusing lens group 364 in the direction of extension of the optical axis 360 of the optical lens 36 is AF The center thickness CT of the anti-shake lens group 363 in the direction of extension of the optical axis 360 of the optical lens 36 is 3.221 mm. OIS The total optical length TTL of the optical lens 36 is 66.180 mm.

[0240] According to the values of the above parameters, it can be calculated that in this example,

[0241] CT MAX / TTL=0.582;F1 / EFL=0.821;EFL AF / EFL=0.372;EFL OIS / EFL=-0.760;

[0242] CT AF / TTL=0.049;CT OIS / TTL=0.023;EFL / TTL=0.718;CT MAX / EPD=2.990.

[0243] It can be seen that the values of each conditional expression in this example are all within the aforementioned limited range.

[0244] See Figure 20 As shown, Figure 20 The astigmatism field curve of the light after passing through the optical lens 36 in Example 4 is shown in FIG. The horizontal axis is the focus offset, the vertical axis is the image height, and the reference wavelength of the light is 546 nm. The solid line X is the focus offset curve in the meridional direction, and the dotted line Y is the focus offset curve in the sagittal direction. Figure 20 It can be seen that the focus offset in the meridional direction is controlled within the range of -0.008mm to 0, and the focus offset in the sagittal direction is controlled within the range of -0.008mm to 0.004mm. The meridional curve and the sagittal curve are relatively close, that is, the optical lens 36 in Example 4 has a small astigmatism and can converge most of the light on the correct focus point, making the image clearer and sharper.

[0245] See Figure 21 As shown, Figure 21 The distortion curve of light after passing through the optical lens 36 in Example 4 is shown in FIG. The horizontal axis is the distortion rate, the vertical axis is the image height, and the reference wavelength of the light is 546 nm. Figure 21 It can be seen that the distortion rate is controlled within the range of -2% to 0, that is, the image captured by the optical lens 36 in Example 4 has a small degree of deformation and low degree of distortion.

[0246] Example 5

[0247] Example 5 of this application provides a camera module 30, which includes an optical lens 36. Figure 22 As shown, Figure 22 This is a schematic diagram of the structure of the optical lens 36 provided in Example 5. The optical lens 36 includes a first fixed lens group 361, an anti-shake lens group 363, a focus lens group 364, a second fixed lens group 362 and an infrared filter 366, which are sequentially distributed along the extension direction of the optical axis 360 of the optical lens 36.

[0248] The first fixed lens group 361 includes two lenses, namely a first lens 36a and a second lens 36b. The first lens 36a has an object-side surface S1 and an image-side surface S2, and the edge of the object-side surface S1 of the first lens 36a serves as the aperture of the optical lens 36. The second lens 36b has an object-side surface S3 and an image-side surface S4.

[0249] The anti-shake lens group 363 includes two lenses: a third lens 36c and a fourth lens 36d. The third lens 36c has an object-side surface S5 and an image-side surface S6. The fourth lens 36d has an object-side surface S7 and an image-side surface S8.

[0250] The focusing lens group 364 includes two lenses, namely a fifth lens 36e and a sixth lens 36f. The fifth lens 36e has an object-side surface S9 and an image-side surface S10. The sixth lens 36f has an object-side surface S11 and an image-side surface S12.

[0251] The second fixed lens group 362 has only one lens, ie, the seventh lens 36g. The seventh lens 36g has an object-side surface S13 and an image-side surface S14.

[0252] The infrared filter 366 has an object-side surface S15 and an image-side surface S16 .

[0253] Table 5a below provides the design parameters of each lens and infrared filter 366 in Example 5, as shown below:

[0254] Table 5a

[0255]

[0256]

[0257] The sag height of the aspheric surface in each of the above lens groups can be calculated using the following formula:

[0258]

[0259] Among them, Z is the aspheric height, r is the radial coordinate of the aspheric surface, c is the curvature of the fixed point ball of the aspheric surface, K is the quadratic surface constant, A i Table 5b below lists the coefficients k, A2, A4, A6, A8, A10, A12, A14, and A16 for the aspheric surface shapes of the lens groups in Example 5.

[0260] Table 5b

[0261]

[0262] Table 5c below provides basic parameters of the optical lens 36 in Example 5, as shown below:

[0263] Table 5c

[0264] System focal length EFL 46.975mm Aperture value FNO 3.2 Field of view FOV 9° Entrance pupil diameter EPD 14.680mm

[0265] In addition, in Example 5, the maximum value CT of the distance between any two adjacent elements of the first fixed lens group 361, the second fixed lens group 362, the anti-shake lens group 363, the focus lens group 364 and the image sensor 32 along the direction of extension of the optical axis 360 of the optical lens 36 is MAX is 39.229 mm. That is, in this example, CT MAX It is the distance from the center of the image-side surface S8 of the fourth lens 36 d in the anti-shake lens group 363 to the center of the object-side surface S9 of the fifth lens 36 e in the focusing lens group 364 .

[0266] Focal length EFL of focusing lens group 364 AF The focal length EFL of the anti-shake lens group 363 is 22.743mm. OIS The focal length F1 of the first fixed lens group 361 is 40.210 mm.

[0267] The center thickness CT of the focusing lens group 364 in the extending direction of the optical axis 360 of the optical lens 36 is AF is 3.564 mm. That is, in this example, CT AF It is the distance from the center of the object-side surface S9 of the fifth lens 36e to the center of the image-side surface S12 of the sixth lens 36f in the focusing lens group 364.

[0268] The center thickness CT of the anti-shake lens group 363 in the extending direction of the optical axis 360 of the optical lens 36 is OIS is 2.929 mm. That is, in this example, CT OISIt is the distance from the center of the object-side surface S5 of the third lens 36 c to the center of the image-side surface S8 of the fourth lens 36 d in the anti-shake lens group 363 .

[0269] The total optical length TTL of the optical lens 36 is 68.178 mm. In this example, TTL is the distance from the center of the object-side surface S1 of the first lens 36 a in the first fixed lens group 361 to the center of the image-side surface S16 of the infrared filter 366 .

[0270] According to the values of the above parameters, it can be calculated that in this example,

[0271] CT MAX / TTL=0.575;F1 / EFL=0.856;EFL AF / EFL=0.484;EFL OIS / EFL=2.155;

[0272] CT AF / TTL=0.052;CT OIS / TTL=0.043;EFL / TTL=0.689;CT MAX / EPD=2.672.

[0273] It can be seen that the values of each conditional expression in this example are all within the aforementioned limited range.

[0274] See Figure 23 As shown, Figure 23 The astigmatism field curve of the light after passing through the optical lens 36 in Example 5. The horizontal axis is the focus offset, the vertical axis is the image height, and the reference wavelength of the light is 546nm. The solid line X is the focus offset curve in the meridional direction, and the dotted line Y is the focus offset curve in the sagittal direction. Figure 23 It can be seen that the focus offset in the meridional direction is controlled within the range of -0.016mm to 0.008mm, and the focus offset in the sagittal direction is controlled within the range of -0.02mm to 0. The meridional curve and the sagittal curve are relatively close, that is, the optical lens 36 in Example 5 has a small astigmatism and can converge most of the light on the correct focus point, making the image clearer and sharper.

[0275] See Figure 24 As shown, Figure 24 The distortion curve of light after passing through the optical lens 36 in Example 5 is shown in FIG. The horizontal axis is the distortion rate, the vertical axis is the image height, and the reference wavelength of the light is 546 nm. Figure 24 It can be seen that the distortion rate is controlled within the range of -2% to 0.4%, that is, the image captured by the optical lens 36 in Example 5 has a small degree of deformation and low degree of distortion.

[0276] Example 6

[0277] Example 6 of this application provides a camera module 30, which includes an optical lens 36. Figure 25 As shown, Figure 25 This is a schematic diagram of the structure of the optical lens 36 provided in Example 6. The optical lens 36 includes a first fixed lens group 361, an anti-shake lens group 363, a focus lens group 364, a second fixed lens group 362, and an infrared filter 366, which are sequentially distributed along the extension direction of the optical axis 360 of the optical lens 36.

[0278] The first fixed lens group 361 includes three lenses: a first lens 36a, a second lens 36b, and a third lens 36c. The first lens 36a and the second lens 36b are cemented together to form a doublet, and the second lens 36b and the third lens 36c are also cemented together to form a doublet. The first lens 36a has an object-side surface S1, and the edge of the object-side surface S1 of the first lens 36a serves as the aperture of the optical lens 36. The image-side surface of the first lens 36a is cemented together with the object-side surface of the second lens 36b to form a shared cemented surface S2. The image-side surface of the second lens 36b is cemented together with the object-side surface of the third lens 36c to form a shared cemented surface S3. The third lens 36c has an image-side surface S4.

[0279] The anti-shake lens group 363 includes two lenses: a fourth lens 36d and a fifth lens 36e. The fourth lens 36d has an object-side surface S5 and an image-side surface S6. The fifth lens 36e has an object-side surface S7 and an image-side surface S8.

[0280] The focusing lens group 364 includes two lenses, namely a sixth lens 36f and a seventh lens 36g. The sixth lens 36f has an object-side surface S9 and an image-side surface S10, while the seventh lens 36g has an object-side surface S11 and an image-side surface S12.

[0281] The second fixed lens group 362 has only one lens, namely, the eighth lens 36 h . The eighth lens 36 h has an object-side surface S13 and an image-side surface S14 .

[0282] The infrared filter 366 has an object-side surface S15 and an image-side surface S16 .

[0283] Table 6a below provides the design parameters of each lens and infrared filter 366 in Example 6, as shown below:

[0284] Table 6a

[0285]

[0286] The sag height of the aspheric surface in each of the above lens groups can be calculated using the following formula:

[0287]

[0288] Among them, Z is the aspheric height, r is the radial coordinate of the aspheric surface, c is the curvature of the fixed point ball of the aspheric surface, K is the quadratic surface constant, A i Table 6b below lists the coefficients k, A2, A4, A6, A8, A10, A12, A14, and A16 for the aspheric surface shapes of the lens groups in Example 6.

[0289] Table 6b

[0290] Surface number S1 S9 S10 S11 S12 S13 S14 K 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 A2 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 A4 -6.551E-06 -2.540E-05 -2.745E-04 -4.498E-04 -2.262E-04 3.803E-03 1.268E-02 A6 1.878E-08 -2.071E-05 -2.014E-05 1.084E-05 2.273E-06 -4.830E-04 -1.889E-03 A8 -1.044E-09 2.694E-07 1.163E-07 -9.627E-08 1.704E-07 2.919E-05 1.771E-04 A10 5.167E-13 0.000E+00 0.000E+00 -4.265E-09 2.335E-09 -6.118E-07 -1.372E-05 A12 9.348E-14 0.000E+00 0.000E+00 1.933E-10 -3.929E-10 -2.078E-08 9.687E-07 A14 1.718E-14 0.000E+00 0.000E+00 -4.311E-12 1.094E-11 1.331E-09 -4.610E-08 A16 -3.277E-16 0.000E+00 0.000E+00 6.023E-14 -1.040E-13 -1.957E-11 9.536E-10

[0291] Table 6c below gives the basic parameters of the optical lens 36 in Example 6, as shown below:

[0292] Table 6c

[0293] System focal length EFL 49.005mm Aperture value FNO 4.196 Field of view FOV 9° Entrance pupil diameter EPD 11.679mm

[0294] In addition, in Example 6, the maximum value CT of the distance between any two adjacent elements of the five elements, namely, the first fixed lens group 361, the second fixed lens group 362, the anti-shake lens group 363, the focus lens group 364, and the image sensor 32, along the direction of extension of the optical axis 360 of the optical lens 36 is MAX is 49.793 mm. That is, in this example, CT MAX It is the distance from the center of the image-side surface S8 of the fifth lens 36 e in the anti-shake lens group 363 to the center of the object-side surface S9 of the sixth lens 36 f in the focusing lens group 364 .

[0295] Focal length EFL of focusing lens group 364 AF The focal length EFL of the anti-shake lens group 363 is 23.093mm. OIS The focal length F1 of the first fixed lens group 361 is 46.715 mm.

[0296] The center thickness CT of the focusing lens group 364 in the direction of the optical axis 360 of the optical lens 36 is AF is 3.724 mm. That is, in this example, CT AF It is the distance from the center of the object-side surface S9 of the sixth lens 36 f to the center of the image-side surface S12 of the seventh lens 36 g in the focusing lens group 364 .

[0297] The center thickness CT of the anti-shake lens group 363 in the direction of the optical axis 360 of the optical lens 36 OIS is 1.648 mm. That is, in this example, CT OIS It is the distance from the center of the object-side surface S5 of the fourth lens 36 d to the center of the image-side surface S8 of the fifth lens 36 e in the anti-shake lens group 363 .

[0298] The total length TTL of the optical lens 36 along its own optical axis 360 is 77.139 mm. In this example, TTL is the distance from the center of the object-side surface S1 of the first lens 36 a in the first fixed lens group 361 to the center of the image-side surface S16 of the infrared filter 366 .

[0299] According to the values of the above parameters, it can be calculated that in this example,

[0300] CT MAX / TTL=0.646;F1 / EFL=0.953;EFL AF / EFL=0.471;EFL OIS / EFL=2.553;

[0301] CT AF / TTL=0.048;CT OIS / TTL=0.021;EFL / TTL=0.635;CT MAX / EPD=4.263.

[0302] It can be seen that the values of each conditional expression in this example are all within the aforementioned limited range.

[0303] See Figure 26 As shown, Figure 26 The astigmatism field curve of the light after passing through the optical lens 36 in Example 6. The horizontal axis is the focus offset, the vertical axis is the image height, and the reference wavelength of the light is 546nm. The solid line X is the focus offset curve in the meridional direction, and the dotted line Y is the focus offset curve in the sagittal direction. Figure 26 It can be seen that the focus offset in the meridional direction is controlled within the range of -0.2mm to 0.02mm, and the focus offset in the sagittal direction is controlled within the range of -0.03mm to -0.01mm. The meridional curve and the sagittal curve are relatively close, that is, the optical lens 36 in Example 6 has a small astigmatism and can converge most of the light on the correct focus point, making the image clearer and sharper.

[0304] See Figure 27 As shown, Figure 27 The distortion curve of light after passing through the optical lens 36 in Example 6 is shown in FIG. The horizontal axis is the distortion rate, the vertical axis is the image height, and the reference wavelength of the light is 546 nm. Figure 27 It can be seen that the distortion rate is controlled within the range of -2% to 3%, that is, the image captured by the optical lens 36 in Example 6 has a small degree of deformation and low degree of distortion.

[0305] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0306] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An optical lens, characterized in that: The optical lens comprises a first fixed lens group, a second fixed lens group, an anti-shake lens group and a focus lens group arranged along the extension direction of the optical axis of the optical lens, wherein: The first fixed lens group, the second fixed lens group, the anti-shake lens group and the focusing lens group each include at least one lens with optical power; The second fixed lens group, the anti-shake lens group and the focusing lens group are all located on the image side of the first fixed lens group, and at least one of the anti-shake lens group and the focusing lens group is located between the first fixed lens group and the second fixed lens group.

2. The optical lens according to claim 1, wherein: The optical lens further includes at least one light-bending component, and the light-bending component is located on the image side of the first fixed lens group.

3. The optical lens according to claim 1 or 2, characterized in that: The first fixed lens group includes a reflecting prism and at least one lens with optical power.

4. The optical lens according to any one of claims 1 to 3, characterized in that: At least one of the anti-shake lens group, the focus lens group, and the second fixed lens group includes a doublet lens.

5. The optical lens according to any one of claims 1 to 4, characterized in that: The optical lens further includes an infrared filter. Along the extending direction of the optical axis of the optical lens, the infrared filter is located on the image side of the last lens in the optical lens.

6. The optical lens according to any one of claims 1 to 5, characterized in that: The optical lens further includes a diaphragm, which is disposed on the object side of the first fixed lens group; or, the diaphragm extends around the object side of the first fixed lens group.

7. The optical lens according to any one of claims 1 to 6, wherein: The optical lens satisfies the following relationship: 0.4<CT MAX / TTL<0.7; Wherein, TTL is the total optical length of the optical lens along the direction of its own optical axis; CT MAX It is the maximum value of the distance between any two adjacent elements of the first fixed lens group, the second fixed lens group, the anti-shake lens group and the focusing lens group along the extending direction of the optical axis of the optical lens.

8. The optical lens according to any one of claims 1 to 7, wherein: The optical lens satisfies the following relationship: 0.4<EFL / TTL<0.8; Wherein, EFL is the system focal length of the optical lens; TTL is the total optical length of the optical lens along the extending direction of its own optical axis.

9. The optical lens according to any one of claims 1 to 8, wherein: The optical lens satisfies the following relationship: 3.1<FNO<4.5; Wherein, FNO is the aperture value of the optical lens.

10. The optical lens according to any one of claims 1 to 9, wherein: The optical lens satisfies the following relationship: 0.1<F1 / EFL<1; Wherein, F1 is the focal length of the first fixed lens group; EFL is the system focal length of the optical lens.

11. The optical lens according to any one of claims 1 to 10, characterized in that: The optical lens satisfies the following relationship: EFL AF / EFL<0.6; Among them, EFL AF is the focal length of the focusing lens group; EFL is the system focal length of the optical lens.

12. The optical lens according to any one of claims 1 to 11, wherein: The optical lens satisfies the following relationship: -4<EFL OIS / EFL<4; Among them, EFL OIS is the focal length of the anti-shake lens group; EFL is the system focal length of the optical lens.

13. The optical lens according to any one of claims 1 to 12, wherein: The optical lens satisfies the following relationship: 0.01<CT AF / TTL<0.2; Among them, CT AF is the center thickness of the focusing lens group along the extending direction of the optical axis of the optical lens; TTL is the total optical length of the optical lens along the extending direction of its own optical axis.

14. The optical lens according to any one of claims 1 to 13, wherein: The optical lens satisfies the following relationship: 0.01<CT OIS / TTL<0.2; Among them, CT OIS is the center thickness of the anti-shake lens group along the extending direction of the optical axis of the optical lens; TTL is the total optical length of the optical lens along the extending direction of its own optical axis.

15. The optical lens according to any one of claims 1 to 14, characterized in that: The optical lens satisfies the following relationship: 2.5<CT MAX / EPD<4.5; Wherein, EPD is the entrance pupil diameter of the optical lens; CT MAX It is the maximum value of the distance between any two adjacent elements of the first fixed lens group, the second fixed lens group, the anti-shake lens group and the focusing lens group along the extending direction of the optical axis of the optical lens.

16. A camera module, characterized in that: include: substrate; An image sensor is disposed on the substrate, wherein the image sensor has an imaging surface; The optical lens is the optical lens according to any one of claims 1 to 15, wherein the lens module is electrically connected to the substrate, and the image side of the optical lens faces the imaging surface.

17. The camera module according to claim 16, wherein: The optical lens satisfies the following relationship: 0.4<CT MAX / TTL<0.7; Wherein, TTL is the total optical length of the optical lens along the direction of its own optical axis; CT MAX It is the maximum value of the distance between any two adjacent elements of the five elements, namely, the first fixed lens group, the second fixed lens group, the anti-shake lens group, the focus lens group and the image sensor, along the extending direction of the optical axis of the optical lens.

18. The camera module according to claim 16 or 17, wherein: The optical lens satisfies the following relationship: 2.5<CT MAX / EPD<4.5; Wherein, EPD is the entrance pupil diameter of the optical lens; CT MAX It is the maximum value of the distance between any two adjacent elements of the five elements, namely, the first fixed lens group, the second fixed lens group, the anti-shake lens group, the focus lens group and the image sensor, along the extending direction of the optical axis of the optical lens.

19. An electronic device, characterized in that: include: shell; a mainboard, disposed in the housing; The camera module is the camera module according to any one of claims 16 to 18, wherein the camera module is arranged in the housing and electrically connected to the mainboard.

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