Camera module and electronic equipment

Abstract

The invention relates to a camera module and electronic equipment, the camera module comprises a lens assembly, a first reflection assembly, a second reflection assembly and an image generation assembly, the first reflection assembly and the lens assembly are arranged along a first direction, the first reflection assembly comprises a first reflection surface, and the first reflection surface is obliquely arranged relative to the optical axis of the lens assembly; the second reflection assembly and the first reflection assembly are arranged in the second direction, the second reflection assembly comprises a second reflection face and a third reflection face, the second reflection face and the third reflection face are arranged in the third direction, and the second reflection face and the third reflection face are both arranged in an inclined mode relative to the second direction. The image generation assembly and the first reflection assembly are located on the same side of the second reflection assembly, light penetrating through the lens assembly can sequentially pass through the first reflection face, the second reflection face and the third reflection face to be reflected to the image generation assembly, and therefore it can be guaranteed that the camera module has a long equivalent focal section, and meanwhile the size of the camera module is effectively reduced.

Description

Technical Field

[0001] This application relates to the technical field of mobile terminals, and particularly to a camera module and an electronic device. Background Art

[0002] Electronic devices are increasingly widely used in people's daily lives, and users' demands for electronic devices are also constantly increasing, especially the demand for the cameras of electronic devices. To meet different shooting needs of users, electronic devices generally include multiple camera modules. Among them, to meet users' telephoto needs, electronic devices need to have a longer focal length, a larger sensor area, and a larger aperture. However, correspondingly, the total length of the lens components in the lens design also needs to be longer, resulting in a larger volume of the camera module with a longer focal length. Currently, the volume of mobile terminals is more lightweight and thinner. Therefore, it is difficult to place multiple camera modules and a camera module with a longer focal length in the volume of existing more lightweight and thinner mobile terminals at the same time. Summary of the Invention

[0003] In view of this, this application provides a camera module and an electronic device to solve the problem that it is difficult to place multiple camera modules and a camera module with a longer focal length in the volume of existing more lightweight and thinner mobile terminals at the same time in the prior art.

[0004] In the first aspect of the embodiments of this application, a camera module is provided, including a lens component, a first reflection component, a second reflection component, and an image generation component. The first reflection component is arranged along a first direction with the lens component. The first reflection component includes a first reflection surface, and the first reflection surface is inclined with respect to the optical axis of the lens component. The second reflection component is arranged along a second direction with the first reflection component. The second reflection component includes a second reflection surface and a third reflection surface. The second reflection surface and the third reflection surface are arranged along a third direction, and both the second reflection surface and the third reflection surface are inclined with respect to the second direction. The image generation component and the first reflection component are on the same side of the second reflection component. The light passing through the lens component can be reflected to the image generation component through the first reflection surface, the second reflection surface, and the third reflection surface in sequence.

[0005] In this application, the camera module in the embodiments of this application folds the optical path between the light passing through the lens component and reaching the image generation component by using the first reflection component and the second reflection component, so that the camera device can achieve a longer back focal length, thereby effectively reducing the volume of the camera module while ensuring that the camera module has a longer equivalent focal length, and reducing the occupied space of the camera module in the electronic device.

[0006] In addition, since the lens assembly, the first reflection assembly, and the second reflection assembly are arranged along the first direction, and the first reflection assembly and the second reflection assembly are located on the same side of the lens assembly, the lens assembly can have a larger layout space in its radial direction. Therefore, in the embodiments of the present application, the lens assembly does not need to be adaptively trimmed, improving the preparation yield of the lens assembly and reducing the preparation cost. This structure can also achieve a larger aperture, increasing the amount of incident light, having the advantages of constant light input and stable brightness, being able to avoid vignetting in the rear imaging, and improving the imaging effect of the camera module. In addition, the camera module with this structure facilitates the arrangement of the anti-shake device and the autofocus device, so that the camera module can easily implement the anti-shake function and the autofocus function.

[0007] In a possible design, the first reflection assembly further includes a first bracket, and the first reflection surface is provided on a part of the surface of the first bracket.

[0008] The first reflection assembly with this structure has a simple structure, reducing the structural complexity and weight of the first reflection assembly, saving the preparation cost, and being beneficial to the more miniaturized and lightweight design of the camera module.

[0009] In a possible design, the first reflection assembly further includes a second bracket and a first reflector, the first reflector is disposed on the second bracket, and a part of the surface of the first reflector forms the first reflection surface.

[0010] The second bracket can provide reliable support for the first reflector, thereby improving the structural stability of the first reflection assembly, and can also provide protection for the first reflector to prevent the first reflection surface of the first reflector from being scratched, ensuring the reflection effect of the first reflection surface. At the same time, the first reflection assembly with this structure reduces the surface requirements for the second bracket, which is beneficial to improving the surface flatness of the first reflection surface, thereby enhancing the total reflection effect of the first reflection surface. In addition, the first reflector can be processed and assembled separately, improving the assembly efficiency and qualified yield of the camera module.

[0011] In a possible design, the first reflector is a lens or a prism to improve the design freedom of the first reflection assembly and reduce the cost.

[0012] In a possible design, the acute angle between at least a part of the first reflection surface and the optical axis of the lens assembly is a first angle α, and the first angle α satisfies 40° ≤ α ≤ 50°, so that the light reflected by the first reflection surface can enter the second reflection assembly along the second direction, improving the light transmission efficiency and reducing the loss of light during the reflection process.

[0013] In a possible design, the optical path length between the light-emitting side of the lens assembly and the second reflection assembly is between 8 mm and 9.5 mm.

[0014] When the optical path length between the light-emitting side of the lens module and the second reflection component is between 8 mm and 9.5 mm, the area of the first reflection surface of the first reflection component available for reflecting light is of appropriate size, which can meet the reflection requirements for the light passing through the lens module, reduce the loss of the reflected light, and also ensure that the camera module has a long back focal length, thus facilitating the design of the telephoto camera module. Moreover, the size of the first reflection component in the first direction is appropriate, which is also conducive to the miniaturization design of the camera module.

[0015] In a possible design, the second reflection component further includes a third bracket, and the second reflection surface and the third reflection surface are provided on a part of the surface of the third bracket.

[0016] The second reflection component with this structure has a simple structure, reduces the structural complexity and weight of the second reflection component, saves the manufacturing cost, and is conducive to the more miniaturized and lightweight design of the camera module.

[0017] In a possible design, the second reflection component further includes a fourth bracket and a second reflector, the second reflector is arranged on the fourth bracket, and the second reflection surface and the third reflection surface are formed on a part of the surface of the second reflector.

[0018] The fourth bracket can provide reliable support for the second reflector, thus improving the structural stability of the second reflection component, and can also provide protection for the second reflector to prevent the second reflection surface and the third reflection surface of the second reflector from being scratched, ensuring the reflection effect of the second reflection surface and the third reflection surface. At the same time, the second reflection component with this structure reduces the surface requirements for the fourth bracket, which is conducive to improving the surface flatness of the second reflection surface and the third reflection surface, thereby enhancing the total reflection effect of the second reflection surface and the third reflection surface. In addition, the second reflector can be processed and assembled separately, improving the assembly efficiency and the qualified rate of the camera module.

[0019] In a possible design, the second reflector is a lens or a prism to improve the design freedom of the first reflection component and reduce the cost.

[0020] In a possible design, the acute angle between the second reflection surface and the second direction is the second included angle β, the acute angle between the third reflection surface and the second direction is the third included angle γ, and the second included angle β and the third included angle γ satisfy β + γ = 90°.

[0021] This structure can ensure that the light incident into the second reflection component along the second direction is reflected by the second reflection surface and the third reflection surface and then also exits along the second direction, thereby ensuring the light transmission efficiency, reducing the loss of light during the reflection process, and improving the imaging effect.

[0022] In a possible design, the second reflection component further includes a fourth reflection surface. The fourth reflection surface is arranged along the second direction with the second reflection surface and the third reflection surface. The fourth reflection surface includes an incident area, a reflection area, and an exit area. At least part of the reflection area is located between the incident area and the exit area. The light reflected by the first reflection component can be transmitted to the image generation component after passing through the incident area, the second reflection surface, the reflection area, the third reflection surface, and the exit area.

[0023] The arrangement of the fourth reflection surface can increase the number of reflections of light within the second reflection component, thereby further increasing the optical path length of the light path within the second reflection component, further increasing the back focal length of the camera module, and further enhancing the telephoto function and long-distance shooting effect of the camera module. Additionally, to ensure the reflection of light between the incident area, the second reflection surface, the reflection area, the third reflection surface, and the exit area, the acute angle between the second reflection surface and the third reflection surface and the second direction can be set to be relatively large, thereby further reducing the size of the second reflection component in the second direction, and further reducing the overall volume of the camera module, which is more conducive to the miniaturization design of the camera module.

[0024] In a possible design, the optical path length of the light path formed by the light within the second reflection component is between 18 mm and 24 mm.

[0025] When the optical path length of the light path formed by the light within the second reflection component is between 18 mm and 24 mm, the area of the second reflection surface and the third reflection surface that can be used to reflect light is of a moderate size, which can meet the reflection requirements of the light, is not likely to cause light loss, and can also ensure that the camera module has a relatively long back focal length, thus being conducive to the design of a telephoto camera module. Moreover, the size of the second reflection component in the second direction or the third direction is of a moderate size, which is also conducive to the miniaturization design of the camera module.

[0026] In a possible design, the camera module further includes an anti-shake device. The anti-shake device is connected to the lens assembly and is used to drive the lens assembly to move.

[0027] According to the shaking direction and displacement amount of the lens assembly, the anti-shake device can drive the lens assembly to move in the opposite direction to compensate for the shaking direction and displacement amount of the lens assembly, thereby effectively overcoming the poor imaging caused by the shaking of the camera module, realizing the anti-shake function of the camera module, and improving the shooting effect of the camera module. Among them, in the camera module with this structure, the lens assembly has a larger moving space in the radial direction, so that the lens assembly can achieve a larger anti-shake angle, and thus it is easier to realize the anti-shake function of the telephoto lens.

[0028] In a possible design, the camera module further includes an auto-focus device, which is connected to the second reflection component and is configured to drive the second reflection component to move along the second direction.

[0029] Along the second direction, the auto-focus device can drive the second reflection component to move in a direction approaching or moving away from the image generation component, so as to implement the auto-focus function for objects at different distances, thereby ensuring the imaging effect of the camera module when shooting at different focal lengths. Among them, by moving the second reflection component to implement the auto-focus function, the required travel for focusing can be shortened, thereby reducing the design requirements and design difficulty for the auto-focus device, facilitating the setting of the auto-focus device, reducing the structural complexity of the camera module, and saving costs.

[0030] In a possible design, the camera module further includes a first circuit board, which is electrically connected to the anti-shake device and the auto-focus device respectively. Along the first direction, the first circuit board and the anti-shake device are arranged on the same side of the auto-focus device. This structure facilitates the connection between the first circuit board and the anti-shake device and the auto-focus device, reducing the structural complexity.

[0031] The second aspect of the embodiments of the present application further provides an electronic device, including a housing and the camera module in any of the above embodiments, and the camera module is disposed in the housing.

[0032] It should be understood that the above general description and the following detailed description are only exemplary and do not limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0034] Figure 1 It is a schematic structural diagram of a camera module provided by an embodiment of the present application;

[0035] Figure 2 It is an exploded view of the camera module in the first embodiment provided by the embodiment of the present application;

[0036] Figure 3 It is a schematic optical path principle diagram of the first reflection component;

[0037] Figure 4 It is a schematic structural diagram of the first reflection component in a specific embodiment;

[0038] Figure 5 Structural schematic diagram of the first reflection component in another specific embodiment;

[0039] Figure 6 Structural schematic diagram of the first reflection component in yet another specific embodiment;

[0040] Figure 7 Exploded view of the camera module provided in the second embodiment of the present application;

[0041] Figure 8 Structural schematic diagram of the second reflection component in a specific embodiment;

[0042] Figure 9 Structural schematic diagram of the second reflection component in another specific embodiment;

[0043] Figure 10 Structural schematic diagram of the second reflection component in yet another specific embodiment;

[0044] Figure 11 Optical path schematic diagram of the second reflection component in some implementation schemes;

[0045] Figure 12 Structural schematic diagram of the second reflection component in another implementation scheme;

[0046] Figure 13 Optical path schematic diagram of the second reflection component in some other implementation schemes;

[0047] Figure 14 Exploded view of the camera module provided in the third embodiment of the present application;

[0048] Figure 15 Structural schematic diagram of another camera module provided in the embodiment of the present application;

[0049] Figure 16 For Figure 1 Top view of the camera module in;

[0050] Figure 17 For Figure 16 Cross-sectional view in the A-A direction in;

[0051] Figure 18 For Figure 1 Side view of the camera module in;

[0052] Figure 19 For Figure 18 Cross-sectional view in the B-B direction in.

[0053] Reference numerals:

[0054] 1 - lens assembly;

[0055] 11 - Lens;

[0056] 12 - Lens barrel;

[0057] 2 - First reflection component;

[0058] 21 - First reflecting surface;

[0059] 22 - First bracket;

[0060] 23 - Second bracket;

[0061] 24 - First reflector;

[0062] 25 - Right - angled surface;

[0063] 3 - Second reflection component;

[0064] 31 - Second reflecting surface;

[0065] 32 - Third reflecting surface;

[0066] 33 - Fourth reflecting surface;

[0067] 331 - Incident area;

[0068] 332 - Reflection area;

[0069] 333 - Exit area;

[0070] 34 - Third bracket;

[0071] 35 - Fourth bracket;

[0072] 36 - Second reflector;

[0073] 4 - Image generation component;

[0074] 5 - Anti - shake device;

[0075] 51 - First magnet;

[0076] 52 - First coil;

[0077] 53 - First housing;

[0078] 6 - Auto - focusing device;

[0079] 61 - Second magnet;

[0080] 62 - Second coil;

[0081] 63 - Second housing;

[0082] 7 - First circuit board;

[0083] 8 - Second circuit board;

[0084] 9 - The third circuit board;

[0085] X - The third direction;

[0086] Y - The second direction;

[0087] Z - The first direction.

[0088] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application. Detailed implementation manners

[0089] For a better understanding of the technical solutions of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0090] In the description of this application, unless otherwise clearly specified and defined, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; unless otherwise specified or stated, the term "plurality" means two or more; the terms "connection", "fixation", etc. should all be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0091] The terms used in the embodiments of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The singular forms "a", "the", and "said" used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0092] It should be understood that the term " / and" used herein is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, a / or b can represent: a exists alone, a and b exist simultaneously, and b exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0093] For ease of understanding, relevant technical terms involved in the embodiments of this application are first explained and described.

[0094] The optical axis is a ray of light that vertically passes through the center of an ideal lens. When a ray of light parallel to the optical axis enters a convex lens, an ideal convex lens should be such that all the rays converge at a point behind the lens, and this point where all the rays converge is the focal point.

[0095] The total track length (TTL) of the lens assembly refers to the total length from the vertex of the first lens disposed adjacent to the object side in the lens assembly to the image plane of the lens assembly.

[0096] The aperture is a device used to control the amount of light passing through the lens and irradiating onto the photosensitive element. The aperture size is expressed by the F-number / F value.

[0097] The aperture F value (Fno) is a relative value obtained by dividing the focal length of the lens by the clear aperture diameter of the lens (the reciprocal of the relative aperture). The smaller the aperture F value, the larger the aperture; the larger the aperture F value, the smaller the aperture.

[0098] The effective focal length (EFL), also known as the focal length, is a measure of the convergence or divergence of light in an optical system. It refers to the perpendicular distance from the optical center of a lens or lens group to the focal plane when an infinitely distant scene forms a clear image on the focal plane through the lens or lens group. From a practical perspective, it can be understood as the distance from the optical center of the lens (lens assembly) to the image plane.

[0099] The back focal length (BFL) is the distance on the optical axis from the surface of the lens closest to the imaging side of the lens assembly to the image plane of the image generation assembly.

[0100] Electronic devices are increasingly widely used in people's daily lives, and users' demands for electronic devices are also constantly increasing, especially the demand for the cameras of electronic devices. In the prior art, an electronic device generally includes multiple camera modules, such as a main camera module, an ultra-wide-angle camera module, and / or a mid-range camera module, etc., to meet different shooting needs of users. Among them, in order to meet users' telephoto needs, an electronic device usually needs to have a longer focal length, a larger sensor area, and a larger aperture. However, correspondingly, the total length of the lens assembly in lens design also needs to be longer, resulting in a larger volume of the camera module with a longer focal length under the traditional solution.

[0101] Currently, the volume of mobile terminals is becoming thinner and lighter. Therefore, it is difficult to fit a camera module with a longer focal length while fitting multiple camera modules in the volume of existing thinner and lighter mobile terminals.

[0102] To solve this technical problem, the present application provides an imaging module, which can be disposed within the housing of electronic devices such as mobile phones, tablet computers, personal digital assistants (PDAs), laptop computers, in-vehicle computers, foldable display devices, foldable display screens, wearable devices, etc. The embodiments of the present application do not impose special restrictions on the specific form of the above-mentioned electronic devices. For the convenience of description below, the electronic device is taken as an example of a mobile phone, and the imaging module of the present application will be introduced with specific embodiments below.

[0103] Please refer to Figure 1 and Figure 2 , Figure 1 which is a schematic structural diagram of an imaging module provided by an embodiment of the present application, Figure 2 and which is an exploded view of the imaging module provided by an embodiment of the present application in the first embodiment. Wherein, for the convenience of understanding, the height direction of the imaging module is defined as the first direction Z, the width direction of the imaging module is defined as the second direction Y, and the length direction of the imaging module is defined as the third direction X below.

[0104] As Figure 1 and Figure 2 shown, the imaging module provided by the embodiment of the present application includes a lens assembly 1, a first reflection assembly 2, a second reflection assembly 3, and an image generation assembly 4. After the light is focused by the lens assembly 1, it can be reflected by the first reflection assembly 2 and the second reflection assembly 3 to the image generation assembly 4 to generate an image.

[0105] As Figure 2 shown, the lens assembly 1 can be composed of a lens 11, a lens barrel 12, and a light-shielding member (not shown in the figure). The lens 11 and the light-shielding member can be fixed within the lens barrel 12 to improve the structural stability of the lens assembly 1. Among them, the light-shielding member can block non-imaging light outside the imaging angle of view and improve the clarity of imaging.

[0106] Furthermore, the number of lenses 11 can be 2 to 4. By adjusting the number of lenses 11, the focal length of the imaging module can be adjusted to meet different design requirements. Among them, the number of lenses 11 can be 2, 3, or 4, etc. The material of the lens 11 can also be made of highly transparent materials such as glass, resin, or plastic, and can be specifically set according to actual needs, which is not limited herein.

[0107] As Figure 2As shown, the first reflection component 2 and the lens component 1 are arranged along the first direction Z. Among them, the first reflection component 2 includes a first reflection surface 21, and the first reflection surface 21 is inclined with respect to the optical axis of the lens component 1, so that the light incident through the lens component 1 can be reflected by the first reflection surface 21 to the second reflection component 3, realizing the folding of the optical path, reducing the size of the camera module in the first direction Z, and reducing the volume of the camera module.

[0108] As Figure 2 shown, the second reflection component 3 and the first reflection component 2 can be arranged along the second direction Y. Among them, the second reflection component 3 includes a second reflection surface 31 and a third reflection surface 32. The second reflection surface 31 and the third reflection surface 32 can be arranged along the third direction X, and both the second reflection surface 31 and the third reflection surface 32 can be inclined with respect to the second direction Y, so that the light reflected from the first reflection component 2 to the second reflection component 3 can be reflected by the second reflection surface 31 and the third reflection surface 32 to the image generation component 4, thereby further folding the optical path, reducing the size of the camera module in the second direction Y, and increasing the optical path length of the light in the optical path of the camera module, so that the imaging device can achieve a longer back focal length.

[0109] As Figure 2 shown, the image generation component 4 and the first reflection component 2 are located on the same side of the second reflection component 3, so as to further reduce the size of the camera module in the second direction Y and further reduce the volume of the camera module.

[0110] Among them, the image generation component 4 can include a photosensitive chip, and the photosensitive chip is used to convert the received light signal into a corresponding electrical signal, thereby generating an image. In a specific embodiment, the image generation component 4 can be connected to the main circuit board of the electronic device through a third circuit board 9. The third circuit board 9 is installed on the image generation component 4, and it can be a flexible printed circuit (FPC) or a printed circuit board (PCB), which is not limited here.

[0111] The image generation component 4 can also include a filter, and the filter can be arranged on the optical path between the photosensitive chip and the second reflection component 3 to filter the light reflected from the second reflection component 3 to the photosensitive chip, thereby further improving the imaging effect.

[0112] In the camera module of the embodiment of the present application, the first reflection component 2 and the second reflection component 3 are used to fold the optical path between the light passing through the lens component 1 to the image generation component 4, so that the imaging device can achieve a longer back focal length, so that while ensuring that the camera module has a longer equivalent focal length, the volume of the camera module can be effectively reduced, and the occupied space of the camera module in the electronic device is reduced.

[0113] Exemplarily, when the focal length of the lens assembly 1 is 32.2mm, the aperture F value is 3.55, and the layout of the photosensitive chip of the image generating assembly 4 is 48M0.7μm, compared with the traditional telephoto camera module solution, the camera module provided in the embodiment of the present application can achieve a volume reduction of about 45%, while also being able to achieve a telephoto module with an equivalent focal length of 160mm to 250mm, thereby being able to meet the needs of users for telephoto and long-distance shooting using electronic devices, while reducing the space occupied by the camera module in the electronic device, which is more conducive to its installation in thin and light electronic devices.

[0114] In addition, since the lens assembly 1 and the first reflection assembly 2 and the second reflection assembly 3 are arranged along the first direction Z, and the first reflection assembly 2 and the second reflection assembly 3 are located on the same side of the lens assembly 1, the lens assembly 1 can have a larger layout space in its radial direction. Therefore, the lens assembly 1 in the embodiment of the present application does not need to be adaptively cut, which improves the preparation yield of the lens assembly 1 and reduces the preparation cost. The structure can also achieve a larger aperture, increase the amount of incident light, and has the advantages of constant light input and stable brightness. It can avoid dark corners in rear imaging and improve the imaging effect of the camera module. In addition, the camera module of this structure facilitates the arrangement of the anti-shake device 5 and the automatic focusing device 6, so that the camera module can easily realize the anti-shake function and the automatic focusing function.

[0115] like Figure 2 As shown, in a specific embodiment, the camera module further includes an anti-shake device 5, which is connected to the lens assembly 1. According to the shaking direction and displacement of the lens assembly 1, the anti-shake device 5 can drive the lens assembly 1 to move in the opposite direction to compensate for the shaking direction and displacement of the lens assembly 1, thereby effectively overcoming the poor imaging caused by the shaking of the camera module, thereby realizing the anti-shake function of the camera module and improving the shooting effect of the camera module.

[0116] Among them, the lens assembly 1 in the camera module of this structure has a larger moving space in the radial direction, so that the lens assembly 1 can achieve a larger anti-shake angle, thereby making it easier to achieve the anti-shake function of the telephoto focus.

[0117] like Figure 2 As shown, in a specific embodiment, the camera module also includes an automatic focusing device 6, which is connected to the second reflection component 3. Along the second direction Y, the automatic focusing device 6 can drive the second reflection component 3 to move toward or away from the image generation component 4 to achieve the automatic focusing function of objects at different distances, thereby ensuring the imaging effect of the camera module at different focal lengths.

[0118] Among them, the automatic focusing function is realized by moving the second reflection component 3, which can shorten the stroke required for focusing, thereby reducing the design requirements and design difficulty for the automatic focusing device 6, facilitating the setting of the automatic focusing device 6, reducing the structural complexity of the camera module, and saving costs.

[0119] As Figure 2 shown, in a specific embodiment, the camera module may further include a second circuit board 8 for electrically connecting to the anti-shake device 5 and the automatic focusing device 6. Along the first direction Z, at least part of the second circuit board 8 and the anti-shake device 5 are respectively located on opposite sides of the automatic focusing device 6. One end of the second circuit board 8 is electrically connected to the automatic focusing device 6, and the other end can be bent in the first direction Y and electrically connected to the anti-shake device 5.

[0120] Among them, the second circuit board 8 can be a flexible printed circuit (FPC), so as to facilitate the bending of the second circuit board 8 to achieve electrical connection with the anti-shake device 5 and the automatic focusing device 6.

[0121] Please refer to Figure 3 , Figure 3 which is a schematic optical path diagram of the first reflection component. As Figure 3 shown, the acute angle between the first reflection surface 21 and the optical axis of the lens assembly 1 is the first included angle α, so that light undergoes total internal reflection on the first reflection surface 21, reducing the loss of light on the first reflection surface 21.

[0122] Among them, the first included angle α satisfies 40° ≤ α ≤ 50°, so that the light reflected by the first reflection surface 21 can enter the second reflection component 3 along the second direction Y.

[0123] As Figure 3 shown, in this embodiment, the optical axis of the lens assembly 1 is parallel to the first direction Z, and the first reflection component 2 and the second reflection component 3 are arranged along the second direction Y. Therefore, light can enter the first reflection surface 21 through the lens assembly 1 along the first direction Z and undergo total internal reflection. For example, when the first reflection surface 21 is a mirror surface and the first included angle α is 45°, according to the principle of light reflection, the light reflected by the first reflection surface 21 can directly enter the reflection surface of the second reflection component 3 along the second direction Y, thereby improving the light transmission efficiency and reducing the loss of light during the reflection process.

[0124] Among them, according to different materials of the first reflection surface 21, the first included angle α that satisfies the total internal reflection condition may also change accordingly. When 40° ≤ α ≤ 50°, light can undergo total internal reflection on the first reflection surface 21 and enter the second reflection component 3, which is not limited here.

[0125] Furthermore, asFigure 3 As shown, in a specific embodiment, the optical path length between the light-emitting side of the lens assembly 1 and the second reflection assembly 3 is between 8 mm and 9.5 mm. That is, the sum L1 + L2 of the optical path length L1 between the light-emitting side of the lens assembly 1 and the first reflection surface 21 and the optical path length L2 between the first reflection surface 21 and the second reflection assembly 3 is between 8 mm and 9.5 mm. For example, the optical path length between the light-emitting side of the lens assembly 1 and the second reflection assembly 3 can be 8 mm, 8.5 mm, 9 mm, 9.5 mm, etc., and can be specifically set according to actual requirements without limitation here.

[0126] Among them, if the optical path length between the light-emitting side of the lens assembly 1 and the second reflection assembly 3 is too small, for example, L1 + L2 < 8 mm, it will reduce the area of the first reflection surface 21 available for reflecting light, so that the first reflection surface 21 cannot meet the reflection requirements for the light passing through the lens assembly 1, easily causing light loss, and will reduce the back focal length of the camera module, which is not conducive to the design of the telephoto camera module. If the optical path length between the light-emitting side of the lens assembly 1 and the second reflection assembly 3 is too large, for example, L1 + L2 > 9.5 mm, it will increase the size of the first reflection assembly 2 in the first direction Z, thereby increasing the size of the camera module in the first direction Z, which is not conducive to the miniaturization design of the camera module.

[0127] Therefore, when the optical path length between the light-emitting side of the lens assembly 1 and the second reflection assembly 3 is between 8 mm and 9.5 mm, the area of the first reflection surface 21 of the first reflection assembly 2 available for reflecting light is of moderate size, which can meet the reflection requirements for the light passing through the lens assembly 1, reduce the loss of the reflected light, and can also ensure that the camera module has a longer back focal length, thus being conducive to the design of the telephoto camera module, and the size of the first reflection assembly 2 in the first direction Z is moderate, which is also conducive to the miniaturization design of the camera module.

[0128] Please refer to Figure 4 , Figure 4 which is a schematic structural diagram of the first reflection assembly in a specific embodiment. As Figure 4 shown, in a specific embodiment, the first reflection assembly 2 may include a first bracket 22, and the first reflection surface 21 described above is provided on a part of the surface of the first bracket 22.

[0129] Figure 4 In the embodiment shown, the structure of the first reflection assembly 2 is simple, reducing the structural complexity and weight of the first reflection assembly 2, saving the preparation cost, and being conducive to the more miniaturized and lightweight design of the camera module.

[0130] Among them, the first reflecting surface 21 can be formed by a reflective material layer electroplated, sprayed or coated on the corresponding surface of the first bracket 22, so that the first reflecting surface 21 can be a mirror surface with a total reflection function, reducing the loss of light. Of course, the first reflecting surface 21 can also be formed by a reflective film adhered to the corresponding surface of the first bracket 22 to further reduce the manufacturing cost, which is not limited here.

[0131] Please refer to Figure 5 , Figure 5 which is a schematic structural diagram of the first reflecting component in another specific embodiment. As Figure 5 shown, in another specific embodiment, the first reflecting component 2 may include a second bracket 23 and a first reflecting member 24. The first reflecting member 24 is disposed on the second bracket 23, and a part of the surface of the first reflecting member 24 forms the above-mentioned first reflecting surface 21.

[0132] When the first reflecting component 2 of this structure is applied to the camera module, the second bracket 23 can provide reliable support for the first reflecting member 24, thereby improving the structural stability of the first reflecting component 2, and can also provide protection for the first reflecting member 24 to prevent the first reflecting surface 21 of the first reflecting member 24 from being scratched and ensure the reflection effect of the first reflecting surface 21. At the same time, the first reflecting component 2 of this structure reduces the surface requirements for the second bracket 23, which is beneficial to improving the surface flatness of the first reflecting surface 21, thereby enhancing the total reflection effect of the first reflecting surface 21. In addition, the first reflecting member 24 can be processed and assembled separately, improving the assembly efficiency and qualified rate of the camera module.

[0133] Among them, in the specific embodiment as Figure 5 shown, the first reflecting member 24 can be a lens adhered or clamped in the second bracket 23 to further reduce the cost.

[0134] Please refer to Figure 6 and Figure 7 , Figure 6 which is a schematic structural diagram of the first reflecting component in yet another specific embodiment, Figure 7 and this is an exploded view of the camera module provided by the embodiment of the present application in the second embodiment. As Figure 6 shown, the first reflecting member 24 can also be a prism. Specifically, the first reflecting member 24 can be a triangular prism to enhance the stability of the first reflecting member 24 in the second bracket 23. In this embodiment, the first reflecting surface 21 is formed by the inclined surface of the triangular prism.

[0135] As Figure 7As shown, when the first reflector 24 is a triangular prism, the two right-angled surfaces 25 of the first reflector 24 can be arranged substantially parallel to the lens assembly 1 and the second reflector assembly 3 respectively. Since the first reflecting surface 21 is formed by the inclined surface of the first reflector 24, the light entering the first reflector assembly 2 through the lens assembly 1 can be guided by the first reflector 24 and then enter the second reflector assembly 3, so as to further improve the light conduction effect.

[0136] Among them, when the first reflector 24 is a prism, it can be made of materials such as plastic, plexiglass, resin, etc., so as to further reduce costs and improve the light extraction efficiency.

[0137] Of course, the first reflector assembly 2 can also be other structures capable of reflecting light to improve the design freedom of the first reflector assembly 2, which is not limited here.

[0138] Please refer to Figure 8 , Figure 8 which is a schematic structural diagram of the second reflector assembly in a specific embodiment. As Figure 8 shown, in a specific embodiment, the second reflector assembly 3 may include a third bracket 34, and a second reflecting surface 31 and a third reflecting surface 32 are provided on a part of the surface of the third bracket 34.

[0139] The second reflector assembly 3 with this structure has a simple structure, reduces the structural complexity and weight of the second reflector assembly 3, and is beneficial to the more miniaturized and lightweight design of the camera module.

[0140] Among them, the second reflecting surface 31 and the third reflecting surface 32 can be formed by a reflective material layer electroplated, sprayed or coated on the corresponding surface of the third bracket 34, so that the second reflecting surface 31 and the third reflecting surface 32 can be mirrors with total reflection functions, reducing light loss. Of course, the second reflecting surface 31 and the third reflecting surface 32 can also be formed by a reflective film bonded to the corresponding surface of the third bracket 34 to further reduce the preparation cost, which is not limited here.

[0141] Please refer to Figure 9 , Figure 9 which is a schematic structural diagram of the second reflector assembly in another specific embodiment. As Figure 9 shown, in another specific embodiment, the second reflector assembly 3 may include a fourth bracket 35 and a second reflector 36. The second reflector 36 is installed on the fourth bracket 35, and a part of the surface of the second reflector 36 forms the above-mentioned second reflecting surface 31 and third reflecting surface 32. When the number of the second reflectors 36 is two, the second reflecting surface 31 and the third reflecting surface 32 are respectively formed on the two second reflectors 36.

[0142] Please refer to Figure 7, when the second reflection component 3 of this structure is applied to a camera module, the fourth bracket 35 can provide reliable support for the second reflector 36, thereby improving the structural stability of the second reflection component 3. It can also provide protection for the second reflector 36 to prevent the second reflection surface 31 and the third reflection surface 32 of the second reflector 36 from being scratched, ensuring the reflection effect of the second reflection surface 31 and the third reflection surface 32. At the same time, the second reflection component 3 of this structure reduces the surface requirements for the fourth bracket 35, which is beneficial to improving the surface flatness of the second reflection surface 31 and the third reflection surface 32, thereby enhancing the total reflection effect of the second reflection surface 31 and the third reflection surface 32. In addition, the second reflector 36 can be processed and assembled separately, improving the assembly efficiency and qualified rate of the camera module.

[0143] Among them, in the specific embodiment as Figure 9 shown, the second reflector 36 can be a lens adhesively bonded or clamped in the fourth bracket 35 to further reduce costs.

[0144] Please refer to Figure 10 , Figure 10 which is a schematic structural diagram of the second reflection component in another specific embodiment. As Figure 10 shown, the second reflector 36 can also be a prism, and the shape of the prism can match the shape of the internal space of the fourth bracket 35. When the second reflector 36 is a prism, the second reflector 36 fills the fourth bracket 35 to form the state as Figure 2 shown. The second reflection surface 31 and the third reflection surface 32 can be provided on a partial surface where the second reflector 36 contacts the fourth bracket 35, so that light can be guided by the second reflector 36 and then enter the image generation component 4 to further improve the light conduction effect.

[0145] Among them, when the second reflector 36 is a prism, it can be made of materials such as plastic, plexiglass, resin, etc. to further reduce costs and improve the light extraction efficiency.

[0146] Please refer to Figure 11 , Figure 11 which shows Figures 8 to 10 the optical path principle of the second reflection component in Figure 11 shown. As

[0147] shown, the acute angle between the second reflection surface 31 and the second direction Y is the second included angle β, and the acute angle between the third reflection surface 32 and the second direction Y is the third included angle γ, so that light undergoes total reflection on the second reflection surface 31 and the third reflection surface 32, reducing the loss of light on the second reflection surface 31 and the third reflection surface 32. Figure 11As shown, the light reflected by the first reflecting surface 21 enters the second reflecting surface 31 along the second direction Y and undergoes total internal reflection. For example, when the second reflecting surface 31 is a mirror surface and the second included angle β is 45°, according to the principle of light reflection, the light reflected by the second reflecting surface 31 can directly irradiate onto the third reflecting surface 32 along the third direction X, thereby improving the transmission efficiency of the light between the second reflecting surface 31 and the third reflecting surface 32 and reducing the loss of the light during the reflection process. Among them, according to the different materials of the second reflecting surface 31, the second included angle β that satisfies the total internal reflection condition may also change accordingly. When 40° ≤ β ≤ 50°, the light can undergo total internal reflection on the second reflecting surface 31 and irradiate onto the third reflecting surface 32, and no limitation is made here.

[0148] The third included angle γ satisfies 40° ≤ γ ≤ 50°, so that the light reflected by the third reflecting surface 32 can irradiate onto the image generating component 4 along the second direction Y. As Figure 11 shown, the light reflected by the second reflecting surface 31 enters the second reflecting surface 31 along the third direction X and undergoes total internal reflection. For example, when the third reflecting surface 32 is a mirror surface and the third included angle γ is 45°, according to the principle of light reflection, the light reflected by the third reflecting surface 32 can directly irradiate onto the image generating component 4 along the second direction Y, thereby improving the transmission efficiency of the light between the third reflecting surface 32 and the image generating component 4 and reducing the loss of the light during the reflection process. Among them, according to the different materials of the third reflecting surface 32, the third included angle γ that satisfies the total internal reflection condition may also change accordingly. When 40° ≤ γ ≤ 50°, the light can undergo total internal reflection on the third reflecting surface 32 and irradiate onto the image generating component 4, and no limitation is made here.

[0149] Furthermore, as Figure 11 shown, the second included angle β and the third included angle γ satisfy β + γ = 90°, so as to ensure that the light incident on the second reflecting component 3 along the second direction Y is also emitted along the second direction Y after being reflected by the second reflecting surface 31 and the third reflecting surface 32, thereby ensuring the light emission efficiency, reducing the loss of the light during the reflection process, and improving the imaging effect.

[0150] Furthermore, as Figure 11As shown, in the above embodiments, the optical path formed by the light in the second reflection component 3 has an optical path length between 18 mm and 24 mm. That is, the sum of the optical path length C1 between the light incident side of the second reflection component 3 and the second reflection surface 31, the optical path length C2 between the second reflection surface 31 and the third reflection surface 32, and the optical path length C3 between the third reflection surface 32 and the light exit side of the second reflection component 3 is between 18 mm and 24 mm. That is, 18 mm ≤ C1 + C2 + C3 ≤ 24 mm. For example, the optical path length formed by the light in the second reflection component 3 can be 18 mm, 20 mm, 22 mm, 24 mm, etc., which can be specifically set according to actual requirements and are not limited here.

[0151] Among them, if the optical path length formed by the light in the second reflection component 3 is too small, for example, C1 + C2 + C3 < 18 mm, it will reduce the area of the second reflection surface 31 and the third reflection surface 32 that can be used to reflect light, easily causing loss of reflected light, thus not being able to meet the reflection requirements of the light, and will also reduce the optical path length and the back focal length of the camera module, which is not conducive to the design of the telephoto camera module. If the optical path length formed by the light in the second reflection component 3 is too large, for example, C1 + C2 + C3 > 24 mm, it will increase the size of the second reflection component 3 in the second direction Y or the third direction X, thus increasing the overall volume of the camera module, which is not conducive to the miniaturization design of the camera module.

[0152] Therefore, when the optical path length formed by the light in the second reflection component 3 is between 18 mm and 24 mm, the area of the second reflection surface 31 and the third reflection surface 32 that can be used to reflect light is moderate, which can meet the reflection requirements of the light, is not easy to cause loss of light, and can also ensure that the camera module has a long back focal length, thus being conducive to the design of the telephoto camera module, and the size of the second reflection component 3 in the second direction Y or the third direction X is moderate, which is also conducive to the miniaturization design of the camera module.

[0153] In another implementation, please refer to Figure 12 and Figure 13 , Figure 12 is a schematic structural diagram of the second reflection component 3 in another implementation, Figure 13 showing Figure 12 the optical path principle of the second reflection component 3 in Figure 12 As shown, the second reflection component 3 may further include a fourth reflection surface 33, and the fourth reflection surface 33 is arranged along the second direction Y with the second reflection surface 31 and the third reflection surface 32. Similar to the second reflection surface 31 and the third reflection surface 32, the fourth reflection surface 33 can be directly arranged on the fourth bracket 35 or can be arranged on the second reflector 36, which is not limited here.

[0154] As Figure 13As shown in the figure, the fourth reflecting surface 33 includes an incident area 331, a reflecting area 332, and an exit area 333. At least a part of the reflecting area 332 is located between the incident area 331 and the exit area 333. The light reflected by the first reflecting component 2 can be transmitted to the image generating component 4 after passing through the incident area 331, the second reflecting surface 31, the reflecting area 332, the third reflecting surface 32, and the exit area 333.

[0155] As Figure 13 shown in the light path, the setting of the fourth reflecting surface 33 can increase the number of reflections of the light within the second reflecting component 3, thereby further increasing the optical path length of the light within the second reflecting component 3, further increasing the back focal length of the camera module, and thus further enhancing the telescopic function and long-distance shooting effect of the camera module.

[0156] Among them, in this structure, the increase in the number of reflections of the light within the second reflecting component 3 facilitates increasing the optical path length of the light path formed within the second reflecting component 3, thereby making it easier to achieve that the optical path length of the light path formed within the second reflecting component 3 is between 18 mm and 24 mm to meet the design requirements of the telephoto camera module.

[0157] In addition, to ensure the reflection of the light between the incident area 331, the second reflecting surface 31, the reflecting area 332, the third reflecting surface 32, and the exit area 333, the acute angles between the second reflecting surface 31 and the third reflecting surface 32 and the second direction Y can be set relatively large, that is, the sum of the acute angles between the second reflecting surface 31 and the third reflecting surface 32 and the second direction Y is greater than 90°, thereby further reducing the size of the second reflecting component 3 in the second direction Y, further reducing the overall volume of the camera module, and being more conducive to the miniaturization design of the camera module.

[0158] Among them, as Figure 13 shown, along the third direction X, at least a part of the reflecting area 332 can coincide with the incident area 331 and the exit area 333 to further increase the number of reflections of the light within the second reflecting component 3, thereby increasing the back focal length of the camera module.

[0159] Figure 14 This is an exploded view of the camera module provided by the embodiment of the present application in the third embodiment. Figure 15 This is a structural schematic diagram of another camera module provided by the embodiment of the present application.

[0160] As Figure 14 shown, the camera module shown in Figure 14 adopts a second reflecting component 3 that simultaneously has a second reflecting surface 31, a third reflecting surface 32, and a fourth reflecting surface 33. Figure 15 The assembled structure of the camera module shown can be as Figure 14 shown. As Figure 15The second reflecting component 3 adopting this structure has a smaller size in the second direction Y, which is more conducive to assembly in a thin and light electronic device.

[0161] As Figure 14 and Figure 15 In the specific embodiment shown, the camera module further includes a first circuit board 7, and the first circuit board 7 is electrically connected to the anti-shake device 5 and the autofocus device 6 respectively. Among them, along the first direction Z, the first circuit board 7 and the anti-shake device 5 are arranged on the same side of the autofocus device 6, so that it is convenient for the first circuit board 7 to be connected to the anti-shake device 5 and the autofocus device 6, reducing the complexity of the structure.

[0162] In this structure, the first circuit board 7 can be a printed circuit board (PCB) or a flexible printed circuit (FPC), which is not limited here.

[0163] Please refer to Figure 16 and Figure 17 , Figure 16 For Figure 1 is the top view of the camera module in Figure 17 For Figure 16 is the cross-sectional view in the A-A direction in Figure 17 As shown, in a specific embodiment, the anti-shake device 5 may include a first magnet 51, a first coil 52, and a first housing 53, and the first magnet 51 and the first coil 52 are arranged in the first housing 53. Among them, the first magnet 51 is connected to the lens assembly 1, so that when the first coil 52 is energized, the first magnet 51 can be driven to drive the lens assembly 1 to move, thereby realizing the anti-shake function.

[0164] Please refer to Figure 18 and Figure 19 , Figure 18 For Figure 1 is the side view of the camera module in Figure 19 For Figure 18 is the cross-sectional view in the B-B direction in Figure 19 As shown, in a specific embodiment, the autofocus device 6 may include a second magnet 61, a second coil 62, and a second housing 63, the second magnet 61 and the second coil 62 are arranged in the second housing 63, and the second reflecting component 3 is also arranged in the second housing 63. Among them, the second magnet 61 is connected to the second reflecting component 3, so that when the second coil 62 is energized, the second magnet 61 can be driven to drive the second reflecting component 3 to move, thereby realizing the autofocus function.

[0165] For the same or similar parts among the various embodiments in this specification, reference can be made to each other. In particular, for the device embodiments and terminal embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and for the relevant parts, reference can be made to the descriptions in the method embodiments.

[0166] The above description is only the specific implementation manners of the embodiments of the present application, but the protection scope of the embodiments of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the embodiments of the present application should be covered within the protection scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.

Claims

1. An imaging module, characterized in that, Comprising: A lens assembly; A first reflection assembly, the first reflection assembly is arranged along a first direction with respect to the lens assembly, the first reflection assembly includes a first reflection surface, and the first reflection surface is inclined with respect to the optical axis of the lens assembly; A second reflection assembly, the second reflection assembly is arranged along a second direction with respect to the first reflection assembly, the second reflection assembly includes a second reflection surface and a third reflection surface, the second reflection surface and the third reflection surface are arranged along a third direction, and both the second reflection surface and the third reflection surface are inclined with respect to the second direction; An image generation assembly, the image generation assembly and the first reflection assembly are on the same side of the second reflection assembly, and the light passing through the lens assembly can be reflected to the image generation assembly successively through the first reflection surface, the second reflection surface and the third reflection surface.

2. The imaging module according to claim 1, wherein The first reflection assembly further includes a first bracket, and a part of the surface of the first bracket is provided with the first reflection surface.

3. The camera module according to claim 1, wherein The first reflection assembly further includes a second bracket and a first reflector, and the first reflector is arranged on the second bracket; A part of the surface of the first reflector forms the first reflection surface.

4. The camera module according to claim 3, wherein The first reflector is a lens or a prism.

5. The camera module according to any one of claims 1 to 4, characterized in that The acute angle between at least a part of the first reflection surface and the optical axis of the lens assembly is a first angle α, and the first angle α satisfies 40° ≤ α ≤ 50°.

6. The camera module according to any one of claims 1 to 5, characterized in that, The length of the optical path formed between the light-emitting side of the lens assembly and the second reflection assembly is between 8 mm and 9.5 mm.

7. The camera module according to any one of claims 1 to 6, characterized in that, The second reflection assembly further includes a third bracket, and a part of the surface of the third bracket is provided with the second reflection surface and the third reflection surface.

8. The camera module according to any one of claims 1 to 6, characterized in that, The second reflection assembly further includes a fourth bracket and a second reflector, and the second reflector is arranged on the fourth bracket; A part of the surface of the second reflector forms the second reflection surface and the third reflection surface.

9. The imaging module according to claim 8, wherein The second reflector is a lens or a prism.

10. The camera module according to any one of claims 1 to 9, characterized in that, The acute angle between the second reflection surface and the second direction is a second angle β, and the acute angle between the third reflection surface and the second direction is a third angle γ; The second angle β and the third angle γ satisfy β + γ = 90°.

11. The camera module according to any one of claims 1 to 9, characterized in that, The second reflection assembly further includes a fourth reflection surface, and the fourth reflection surface is arranged along the second direction with respect to the second reflection surface and the third reflection surface; The fourth reflection surface includes an incident area, a reflection area and an exit area, and at least a part of the reflection area is located between the incident area and the exit area; The light reflected by the first reflection assembly can be transmitted to the image generation assembly after passing through the incident area, the second reflection surface, the reflection area, the third reflection surface and the exit area.

12. The camera module according to any one of claims 1 to 11, characterized in that, The optical path formed by the light in the second reflection assembly is between 18 mm and 24 mm.

13. The camera module according to any one of claims 1 to 12, characterized in that, The camera module further includes an anti-shake device, and the anti-shake device is connected to the lens assembly for driving the lens assembly to move.

14. The camera module according to any one of claims 1 to 13, characterized in that, The camera module further includes an auto-focus device, and the auto-focus device is connected to the second reflection assembly for driving the second reflection assembly to move along the second direction.

15. The camera module according to any one of claims 1 to 14, characterized in that, The camera module further includes a first circuit board, and the first circuit board is electrically connected to the anti-shake device and the autofocus device respectively; Along the first direction, the first circuit board and the anti-shake device are disposed on the same side of the autofocus device.

16. An electronic device, characterized in that, It includes a housing and the camera module according to any one of claims 1 to 15, and the camera module is disposed within the housing.

Images