Camera module and electronic equipment

Abstract

The invention provides a camera module and electronic equipment. The camera module comprises a spectroscope used for dividing a received light into a first light propagating along a first direction and a second light propagating along a second direction; a first lens and a first photosensitive element, the first lens is used for receiving the first light propagating along the first direction, and the first photosensitive element is used for receiving visible light in the first light propagating by the first lens to form a first image; and a second lens and a second photosensitive element, the second lens is used for receiving the second light propagating along the second direction, and the second photosensitive element is used for receiving invisible light in the second light propagating by the second lens to form a second image. The camera module provided by the invention is small in occupied space.

Description

Technical Field

[0001] The present application relates to the field of camera technology, and in particular to a camera module and electronic equipment. Background Art

[0002] At present, portable electronic products with camera functions (such as mobile phones, tablets, etc., hereinafter collectively referred to as complete devices) are usually equipped with at least two cameras to meet users' different shooting needs for various scenes. However, in the related art, the two cameras are separated in the complete device, occupying more space in the complete device, which is not conducive to making the complete device thinner and lighter. Summary of the invention

[0003] The present application provides a camera module and an electronic device that can occupy a small space.

[0004] In a first aspect, the present application provides a camera module, the camera module comprising:

[0005] A beam splitter, the beam splitter is used to split the received light into a first light propagating along a first direction and a second light propagating along a second direction;

[0006] a first lens and a first photosensitive element, wherein the first lens is used to receive the first light propagating along the first direction, and the first photosensitive element is used to receive visible light in the first light propagated by the first lens to form a first image; and

[0007] A second lens and a second photosensitive element, wherein the second lens is used to receive the second light propagating along the second direction, and the second photosensitive element is used to receive the invisible light in the second light propagated by the second lens to form a second image.

[0008] In a second aspect, the present application further provides an electronic device, comprising a device body and a camera module, wherein the camera module is installed on the device body.

[0009] A spectroscope is provided in the camera module provided in the present application, and the spectroscope can divide the external light into a first light and a second light, wherein the first light reaches the first photosensitive element after passing through the first lens, and the second light reaches the second photosensitive element after passing through the second lens. Therefore, the spectroscope, the first lens, and the first photosensitive element together constitute the first camera, and the spectroscope, the second lens, and the second photosensitive element together constitute the second camera. It can be understood that the first camera and the second camera share the spectroscope, which is equivalent to reducing the volume of a spectroscope, thereby reducing the overall volume of the camera module. The camera module is applied to electronic devices, which is conducive to the thin and light design of electronic devices. In addition, the first camera uses the visible light in the first light to form the first image, and the second camera uses the invisible light in the second light to form the second image, so that some special scenes can be shot, such as foggy weather. In the subsequent process, the processor in the electronic device can be used to merge the first image and the second image, thereby forming a third image with richer details and better imaging quality. In addition, the first camera and the second camera can be assembled into the same module bracket, which can reduce the difference in the tilt angles of the two cameras caused by separate assembly, thereby reducing the error of the dual camera calibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the implementation will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0011] Figure 1 A schematic diagram of an electronic device provided in an embodiment of the present application.

[0012] Figure 2 for Figure 1 A schematic diagram of the electronic device shown in another perspective.

[0013] Figure 3 A schematic diagram of a camera module provided in an embodiment of the present application.

[0014] Figure 4 A schematic diagram of another camera module provided in an embodiment of the present application.

[0015] Figure 5 A schematic diagram of a first photosensitive element provided in an embodiment of the present application.

[0016] Figure 6 A schematic diagram of another first photosensitive element provided in an embodiment of the present application.

[0017] Figure 7A schematic diagram of a second photosensitive element provided in an embodiment of the present application.

[0018] Figure 8 A schematic diagram of another second photosensitive element provided in an embodiment of the present application.

[0019] Fig. 9 A schematic diagram of another camera module provided in an embodiment of the present application.

[0020] Fig.10 A schematic diagram of another camera module provided in an embodiment of the present application.

[0021] Fig.11 A schematic diagram of another camera module provided in an embodiment of the present application.

[0022] Fig.12 A schematic diagram of another camera module provided in an embodiment of the present application.

[0023] Fig.13 A schematic diagram of another camera module provided in an embodiment of the present application.

[0024] Fig.14 A schematic diagram of cutting any lens in the camera module provided in an embodiment of the present application. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] Reference to "embodiment" or "implementation" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment or implementation may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] With the rapid popularization of portable electronic products with camera functions (such as mobile phones, tablets, etc., hereinafter collectively referred to as complete machines), camera functions are no longer limited to recording and sharing, but also provide users with important safety guidelines in some dangerous scenes (such as outdoor exploration). However, the cameras of most portable consumer electronic products currently mainly image visible light, and cannot clearly capture some scenes prone to safety accidents (such as foggy weather). In these scenes, adding infrared imaging will obtain more detailed information about the scene, facilitate risk identification, and provide an additional layer of safety. In related technologies, the dual camera module is separated from the complete machine, taking up more space in the complete machine, which is not conducive to the thinness of the complete machine.

[0028] Based on this, the present application hopes to provide a solution that can solve but is not limited to the above-mentioned technical problems, the details of which will be explained in the subsequent embodiments.

[0029] Please refer to Figure 1 and Figure 2 The present application provides an electronic device 100 , which includes a device body 20 and a camera module 10 , wherein the camera module 10 is installed on the device body 20 .

[0030] The electronic device 100 may be a mobile phone, a tablet computer, a laptop computer, a camera device, an ultra-mobile personal computer (UMPC), a wearable device (such as a smart watch, a bracelet, a VR device, etc.), a television, a vehicle-mounted device, an electronic reader, etc. It should be noted that the embodiment of the present application is only exemplified by taking the electronic device 100 as a mobile phone, but this should not be regarded as a limitation to the present application.

[0031] The device body 20 refers to the main part of the electronic device 100, which includes electronic components that realize the main functions of the electronic device 100 and mechanical structures that protect and carry these electronic components. Figure 2 As shown), the device body 20 may include a display screen 210, a middle frame 220, and a battery cover 230. The display screen 210 and the battery cover 230 are both connected to the middle frame 220 and are arranged on opposite sides of the middle frame 220.

[0032] According to actual needs, the camera module 10 can be exposed on any side of the electronic device 100, and this application does not limit this. Taking a mobile phone as an example, the camera module 10 can be set on the front, back, and side of the mobile phone. Among them, the so-called front refers to the side of the mobile phone with a display screen 210; the so-called back refers to the side of the mobile phone with a battery cover 230; the so-called side refers to the circumferential side of the middle frame 220 of the mobile phone. It can be understood that the definition of the front, back, side, etc. of the electronic device 100 may be different for different types, and other types of electronic devices 100 are not described in detail here.

[0033] Please refer to Figure 1 , the electronic device 100 also includes a processor 30, which is electrically connected to the camera module 10. The processor 30 is used to fuse the first image and the second image formed by the camera module 10 to form a third image. That is, the camera module 10 captures the first image and the second image, and then the processor 30 extracts the feature information in the first image and the second image and fuses them. After the fusion, a third image with richer scene details and better image quality is finally obtained. Among them, the first image and the second image can be static images or dynamic images, and accordingly, the third image finally obtained can be a static image or a dynamic image. It should be noted that the processor 30 can be integrated in the camera module 10, or can be set on the device body 20, which is not limited here.

[0034] Please refer to Figure 3 The present application provides a camera module 10, which includes: a beam splitter 110, a first lens 120, a first photosensitive element 130, a second lens 140, and a second photosensitive element 150. The beam splitter 110 is used to split the received light into a first light propagating along a first direction F1 and a second light propagating along a second direction F2. The first lens 120 is used to receive the first light propagating along the first direction F1. The first photosensitive element 130 is used to receive the visible light in the first light propagated by the first lens 120 to form a first image. The second lens 140 is used to receive the second light propagating along the second direction F2. The second photosensitive element 150 is used to receive the invisible light in the second light propagated by the second lens 140 to form a second image. The invisible light can be, but is not limited to, infrared light, ultraviolet light, etc., that is, the second photosensitive element 150 can be, but is not limited to, imaging using infrared light and ultraviolet light.

[0035] Specifically, the beam splitter 110 may also be referred to as a beam splitter, which is an optical component that can split a beam of light into transmitted light and reflected light. That is, after the light passes through the beam splitter 110, it will form two parts of light with different propagation directions, one part of the light is transmitted through the beam splitter 110, and the other part of the light is reflected by the beam splitter 110, thereby forming a first light and a second light.

[0036] The first light propagates toward the first lens 120 and is captured by the first photosensitive element 130 after passing through the first lens 120. The spectroscope 110, the first lens 120, and the first photosensitive element 130 together constitute a first camera, which uses the visible light in the first light to form a colorful first image.

[0037] The second light propagates toward the second lens 140 and is captured by the second photosensitive element 150 after passing through the second lens 140. The spectroscope 110, the second lens 140, and the second photosensitive element 150 together constitute a second camera, which uses the invisible light in the second light to form a monochrome second image.

[0038] The beam splitter 110 may be a prism structure (eg Figure 3 As shown), it can also be a plane mirror structure (as shown Figure 4 As shown in the figure, the related drawings of the subsequent embodiments of the present application are only illustrative of the prism.

[0039] It should be noted that the present application is only exemplified by one beam splitter 110. In other embodiments, the camera module 10 may also include two or more beam splitters 110 to form three or more propagation paths of light, and finally form three or more cameras. For example, two beam splitters 110 can form three cameras, and three beam splitters 110 can form four cameras. For example, the camera module 10 includes a third photosensitive element and two beam splitters 110, wherein one beam splitter 110 is used to split the light from the outside into a first light and a second light, and the other beam splitter 110 is arranged on the propagation path of the first light, and is used to split the first light into a first sub-light and a second sub-light. The first photosensitive element 130 is used to form an image using the first sub-light. The third photosensitive element is used to form an image using the second sub-light, that is, the third photosensitive element and the two beam splitters together constitute a third camera.

[0040] The camera module 10 provided in the present application is provided with a beam splitter 110, which can split external light into a first light and a second light, wherein the first light passes through the first lens 120 and reaches the first photosensitive element 130, and the second light passes through the second lens 140 and reaches the second photosensitive element 150. Therefore, the beam splitter 110, the first lens 120, and the first photosensitive element 130 together constitute the first camera, and the beam splitter 110, the second lens 140, and the second photosensitive element 150 together constitute the second camera. It can be understood that the first camera and the second camera share the beam splitter 110, which is equivalent to reducing the volume of one beam splitter 110, thereby reducing the overall volume of the camera module 10. The camera module 10 is applied to the electronic device 100, which is conducive to the lightweight design of the electronic device 100. In addition, the first camera uses the visible light in the first light to form the first image, and the second camera uses the invisible light in the second light to form the second image, so that some special scenes can be photographed, such as foggy weather. In the subsequent process, the processor 30 in the electronic device 100 can be used to fuse the first image and the second image to form a third image with richer details and better imaging quality. In addition, the first camera and the second camera can be assembled into the same module bracket, which can reduce the difference in tilt angles of the two cameras caused by separate assembly, thereby reducing the error of dual-camera calibration.

[0041] Furthermore, for the first camera, it needs to use visible light for imaging, so the invisible light in the first light needs to be filtered out. In the related art, the camera module cuts off the infrared light through an infrared filter. However, the infrared filter is arranged between the lens and the photosensitive element at intervals, and occupies a certain space independently. The second camera also has the same problem, which is one of the main factors hindering the miniaturization of the camera module. In this regard, the present application adopts the following solution to solve or weaken this problem.

[0042] Please refer to Figure 3 , Figure 5 and Figure 6 The camera module 10 further includes a first cut-off film X1, which is used to cut off the invisible light in the first light. The first cut-off film X1 can be, but is not limited to, an infrared cut-off film, an ultraviolet cut-off film, etc. The infrared cut-off film can cut off infrared light, and the ultraviolet cut-off film can cut off ultraviolet light.

[0043] Please refer to Figure 3In one embodiment, the first cut-off film X1 is disposed on the first lens 120. Specifically, the first lens 120 includes at least one lens, and the number thereof may be but is not limited to 1, 2, 3, 4, etc. The first cut-off film X1 may be plated on the object side or image side of any one or more lenses. After the first light passes through the first lens 120, the invisible light in the first light is absorbed at least partially, so that most or all of the light received by the first photosensitive element 130 is visible light. Among them, the so-called object side and image side refer to: with the optical component as the boundary, the side where the object is located is the object side of the optical component, and the side where the image formed by the object is located is the image side of the optical component. Please refer to here for the following description of the image side and the object side.

[0044] Please refer to Figure 5 and Figure 6 In another embodiment, the first cut-off film X1 is disposed on the first photosensitive element 130. Specifically, the first photosensitive element 130 includes a first microlens layer 131, an RGB color filter layer 132, and a first photosensitive layer 133, which are disposed in sequence. Figure 5 and Figure 6 As shown, the first microlens layer 131 is also called microlens, which is used to collect light, and the first cutoff film X1 is plated on the first microlens layer 131; the RGB color filter layer 132 is used to pass light of one color among R, G, and B; the first photosensitive layer 133 is used to sense the light passing through the RGB color filter layer 132. After the first light passes through the first microlens layer 131, the invisible light in the first light is absorbed at least partially, so that most or all of the light received by the first photosensitive layer 133 is visible light. In this embodiment, the first photosensitive element 130 provided with the RGB color filter layer 132 can restore the color of the photographed scene, and therefore it can also be called a color sensor. It should be noted that the first cutoff film X1 can be set on the side of the first microlens layer 131 away from the RGB color filter layer 132 (such as Figure 5 ), it may also be disposed between the first microlens layer 131 and the RGB color filter layer 132 (as shown Figure 6 shown).

[0045] Of course, in other embodiments, the first cutoff film X1 may also be provided on both the first lens 120 and the first photosensitive element 130 , that is, the above two embodiments are combined.

[0046] It can be understood that in the above three embodiments, by providing the first cutoff film X1 on the first lens 120 or the first photosensitive element 130 , a separate infrared filter is avoided, space occupation is reduced, and miniaturization of the camera module 10 is facilitated.

[0047] Please refer to Figure 3 , Figure 7 and Figure 8 The camera module 10 further includes a second cut-off film X2, which is used to cut off visible light in the second light. The second cut-off film X2 can be, but is not limited to, an infrared cut-off film, an ultraviolet cut-off film, etc. The infrared cut-off film can cut off infrared light, and the ultraviolet cut-off film can cut off ultraviolet light.

[0048] Please refer to Figure 3 In one embodiment, the second cut-off film X2 is disposed on the second lens 140. Specifically, the second lens 140 includes at least one lens, and the number thereof may be, but is not limited to, 1, 2, 3, 4, etc. The second cut-off film X2 may be plated on the object side or image side of any one or more lenses. When the second light passes through the second lens 140, the visible light in the second light is absorbed at least partially, so that most or all of the light received by the second photosensitive element 150 is invisible light. Among them, the so-called object side and image side refer to: with the lens as the boundary, the side where the object is located is the object side of the lens, and the side where the image formed by the object is located is the image side of the lens.

[0049] Please refer to Figure 7 and Figure 8 In another embodiment, a second cut-off film X2 is disposed on the second photosensitive element 150. Specifically, the second photosensitive element 150 includes a second microlens layer 151 and a second photosensitive layer 152 which are sequentially arranged. Figure 7 and Figure 8 As shown, the second microlens layer 151 is also called microlens, which is used to collect light, and the second cutoff film X2 is plated on the second microlens layer 151; the second photosensitive layer 152 is used to sense light. When the second light passes through the second microlens layer 151, the visible light in the second light is absorbed at least partially, so that most or all of the light received by the second photosensitive layer 152 is invisible light. In this embodiment, the second photosensitive element 150 is not provided with an RGB color filter layer 132, and this type of second photosensitive element 150 can also be called a monochrome sensor. It should be noted that the second cutoff film X2 can be provided on the side of the second microlens layer 151 away from the second photosensitive layer 152 (such as Figure 7 ), and may also be disposed between the second microlens layer 151 and the second photosensitive layer 152 (as shown Figure 8 shown).

[0050] Of course, in other embodiments, the second cutoff film X2 may also be provided on both the second lens 140 and the second photosensitive element 150 , that is, a combination of the above two embodiments.

[0051] It can be understood that in the above three embodiments, by setting the second cutoff film X2 on the second lens 140 or the second photosensitive element 150, a separate visible light filter is avoided, space occupation is reduced, and it is conducive to the miniaturization of the camera module 10.

[0052] Of course, the cutoff of visible light can also be achieved through other implementations, which are described in detail below.

[0053] In one embodiment, a component capable of absorbing at least part of the visible light is added to the second lens 140. Specifically, the second lens 140 includes at least one lens, the number of which may be but not limited to 1, 2, 3, 4, etc., and a component capable of absorbing at least part of the visible light may be added to one or more lenses in the second lens 140, and the component may be but not limited to a pigment. When the second light passes through the second lens 140, the visible light in the second light is absorbed at least partly, so that most or all of the light received by the second photosensitive element 150 is invisible light.

[0054] In another embodiment, a component capable of absorbing at least part of the visible light is added to the second photosensitive element 150, and the component may be, but is not limited to, a pigment. Specifically, the second photosensitive element 150 includes a second microlens layer 151 and a second photosensitive layer 152 arranged in sequence, wherein a component capable of absorbing at least part of the visible light is added to the second microlens layer 151. When the second light passes through the second microlens layer 151, the visible light in the second light is absorbed at least partly, so that most or all of the light received by the second photosensitive layer 152 is invisible light.

[0055] Of course, in other embodiments, components capable of absorbing at least part of the visible light may also be added to the second lens 140 and the second photosensitive element 150 at the same time.

[0056] It can be understood that the above three embodiments avoid the need to separately set a visible light filter by adding a component capable of absorbing at least part of the visible light to the second lens 140 or the second photosensitive element 150, thereby reducing space occupancy and facilitating the miniaturization of the camera module 10.

[0057] For further information, please refer to Figure 3 The camera module 10 further includes an intermediate lens 160, which is disposed between the beam splitter 110 and the second lens 140. The intermediate lens 160 and the beam splitter 110 are both prisms and together form a cube shape.

[0058] Specifically, the beam splitter 110 is a prism structure, which includes a first light incident surface 111, a first light emitting surface 112, and a second light emitting surface 113. External light enters the beam splitter 110 from the first light incident surface 111. When the light reaches the first light emitting surface 112, it is semi-transmitted and semi-reflected to form a first light and a second light with different propagation directions, that is, the first light emitting surface 112 is the beam splitting surface of the beam splitter 110. Among them, the first light is reflected by the first light emitting surface 112, and after passing through the second light emitting surface 113, it propagates toward the first lens 120 and finally reaches the first photosensitive element 130. The second light is transmitted from the first light emitting surface 112, and after passing through the intermediate lens 160 and the second lens 140 in sequence, it reaches the second photosensitive element 150. The intermediate lens 160 is a prism structure, which includes a second light incident surface 161 and a third light emitting surface 162, wherein the second light incident surface 161 is directly or indirectly attached to the first light incident surface 111, and the third light emitting surface 162 faces the second lens 140, and the light passing through the first light emitting surface 112 passes through the second light incident surface 161 and the third light emitting surface 162 in sequence before reaching the second lens 140. In this embodiment, since the first light emitting surface 112 and the second light incident surface 161 are the inclined surfaces of the beam splitter 110 and the intermediate lens 160, respectively, the beam splitter 110 and the intermediate lens 160 together form a cubic shape, and such a configuration facilitates the alignment and installation of the second camera to ensure that the optical axis of the second camera and the optical axis of the beam splitter 110 have a high degree of overlap.

[0059] Optionally, the second lens 140 is attached to the middle lens 160. This is beneficial to the installation and positioning of the second lens 140, so as to ensure that the optical axis of the second lens 140 and the optical axis of the middle lens 160 have a high degree of overlap.

[0060] Furthermore, in the above-mentioned structure provided with the intermediate lens 160, the visible light can also be cut off by the intermediate lens 160. Specifically, in one embodiment, the surface of the intermediate lens 160 is provided with a second cut-off film X2 capable of absorbing at least part of the visible light, that is, the second cut-off film X2 can be plated on the second light incident surface 161 and the third light exit surface 162. In another embodiment, the intermediate lens 160 is added with a component capable of absorbing at least part of the visible light. In yet another embodiment, the second cut-off film X2 is provided on the surface of the intermediate lens 160 and a component capable of absorbing at least part of the visible light is added to the intermediate lens 160. It can be understood that whether the second cut-off film X2 is provided on the intermediate lens 160 or a component is added, it is possible to avoid the need to separately provide a visible light filter, thereby reducing space occupancy and facilitating the miniaturization of the camera module 10.

[0061] Please refer to Fig. 9The camera module 10 further includes a first reflector 170 , which is disposed on the object side of the beam splitter 110 , and is used to reflect light from the outside to the beam splitter 110 .

[0062] Specifically, the first reflector 170 is used to reflect light, and it can be a prism (such as Fig. 9 As shown), it can also be a plane mirror. This application only takes a prism as an example. The first reflector 170 includes a fourth light incident surface 171, a first reflective surface 172, and a fourth light emitting surface 173. External light enters the first reflector 170 from the fourth light incident surface 171. After the light reaches the first reflective surface 172, it is reflected and turns 90 degrees. The reflected light passes through the fourth light emitting surface 173 and enters the beam splitter 110. The beam splitter 110 includes a first light incident surface 111, a first light emitting surface 112, and a second light emitting surface 113, wherein the first light incident surface 111 faces the fourth light emitting surface 173, the first light emitting surface 112 faces the first lens 120, and the second light emitting surface 113 faces the second lens 140. The light from the first reflector 170 enters the beam splitter 110 through the first light incident surface 111. When the light reaches the first light exiting surface 112, it is semi-transmitted and semi-reflected to form a first light and a second light with different propagation directions, that is, the first light exiting surface 112 is the beam splitting surface of the beam splitter 110. Among them, the first light is transmitted from the first light exiting surface 112, and after passing through the first light exiting surface 112, it propagates to the first lens 120 and finally reaches the first photosensitive element 130. The second light is reflected from the first light exiting surface 112, and after passing through the second light exiting surface 113, it propagates to the second lens 140 and finally reaches the second photosensitive element 150. In this embodiment, since the first reflector 170 is provided to reflect the light, the propagation distance of the light in the first camera and the second camera is increased, thereby improving the shooting magnification, and the first reflector 170 bends the propagation path of the light after reflecting the light, so that the propagation distance of the light in the first reflector 170 is greater than the thickness of the first reflector 170, thereby avoiding the length of the camera module 10 being too large.

[0063] Optionally, the second lens 140 is attached to the beam splitter 110 , which is beneficial to the installation and positioning of the second lens 140 , so as to ensure that the optical axis of the second lens 140 and the optical axis of the beam splitter 110 have a high degree of overlap.

[0064] Furthermore, in the above-mentioned structure provided with the first reflector 170, the visible light and the invisible light can also be cut off by the beam splitter 110. Specifically, in one embodiment, a first cut-off film X1 capable of absorbing at least part of the invisible light is provided on the first light emitting surface 112. In another embodiment, a second cut-off film X2 capable of absorbing at least part of the visible light is provided on the second light emitting surface 113. In yet another embodiment, the first cut-off film X1 is provided on the first light emitting surface 112 and the second cut-off film X2 is provided on the second light emitting surface 113. It can be understood that by providing the first cut-off film X1 on the first light emitting surface 112, it is possible to avoid providing a separate invisible light filter, and by providing the second cut-off film X2 on the second light emitting surface 113, it is possible to avoid providing a separate visible light filter, and these forms can reduce space occupation and are conducive to the miniaturization of the camera module 10.

[0065] To facilitate the subsequent explanation, Fig.10 The perspective shown defines an XYZ space rectangular coordinate system, wherein the X axis is parallel to the propagation direction of the first light (the length direction of the camera module 10), the Y axis is parallel to the propagation direction of the second light (the height direction of the camera module 10), the Z axis is perpendicular to the X axis and the Y axis, the direction indicated by the arrow of the X / Y / Z axis is the positive direction of the X / Y / Z axis, and the opposite direction to the direction indicated by the arrow of the X / Y / Z axis is the negative direction of the X / Y / Z axis. Please refer to this for the following description of the coordinate system.

[0066] Please refer to Fig.10 , the camera module 10 also includes a second reflector 180, and the second reflector 180 is arranged on the side of the first lens 120 away from the beam splitter 110, and the second reflector 180 is used to reflect the first light from the first lens 120 to the first photosensitive element 130. That is to say, the second reflector 180 is arranged between the first lens 120 and the first sensor, and the first light reaches the first sensor after passing through the first lens 120, and is then reflected by the first sensor to generate a 90° bend, and the reflected first light is finally transmitted to the first photosensitive element 130. In this embodiment, the second reflector 180 can bend the first light in the X direction, thereby reducing the size of the camera module 10 in the X direction. It should be noted that the second reflector 180 can be a prism (such as Fig.10 As shown), it can also be a plane mirror.

[0067] In one embodiment, the direction of the second reflective member 180 toward the first photosensitive element 130 is opposite to the direction of the second lens 140 toward the second photosensitive element 150. That is, the second reflective member 180 and the first photosensitive element 130 are sequentially arranged along the positive direction of the Y axis, and the second lens 140 and the second photosensitive element 150 are sequentially arranged along the negative direction of the Y axis (e.g., Fig.10 Alternatively, the second reflector 180 and the first photosensitive element 130 are sequentially arranged along the negative direction of the Y axis, and the second lens 140 and the second photosensitive element 150 are sequentially arranged along the positive direction of the Y axis (as shown in FIG. Fig.11 shown).

[0068] In another embodiment, the direction of the second reflective member 180 toward the first photosensitive element 130 is the same as the direction of the second lens 140 toward the second photosensitive element 150. That is, the second reflective member 180 and the first photosensitive element 130 are sequentially arranged along the positive direction of the Y axis, and the second lens 140 and the second photosensitive element 150 are sequentially arranged along the positive direction of the Y axis (e.g., Fig.12 Alternatively, the second reflector 180 and the first photosensitive element 130 are sequentially arranged along the negative direction of the Y axis, and the second lens 140 and the second photosensitive element 150 are sequentially arranged along the negative direction of the Y axis (as shown in FIG. Fig.13 As shown). It can be understood that when "the direction of the second reflective member 180 toward the first photosensitive element 130 is the same as the direction of the second lens 140 toward the second photosensitive element 150", the size of the camera module 10 in the Y-axis direction can be reduced.

[0069] Please refer to Fig.13 In the above embodiments, the camera module 10 may further include a third lens 190, and the third lens 190 is arranged opposite to the beam splitter 110, and the third lens 190 is used to guide the external light to the beam splitter 110, that is, the third lens 190 is arranged on the object side of the beam splitter 110. The third lens 190 includes at least one lens, and the number thereof may be but is not limited to 1, 2, 3, 4, etc. It can be understood that the third lens 190 is arranged on the object side of the beam splitter 110, so that the first camera and the second camera share the third lens 190 and the beam splitter 110, that is, the third lens 190, the beam splitter 110, the first lens 120, and the first photosensitive element 130 together constitute the first camera. The third lens 190, the beam splitter 110, the second lens 140, and the second photosensitive element 150 together constitute the second camera. This arrangement is equivalent to reducing the volume of the third lens 190 and the beam splitter 110, thereby reducing the overall volume of the camera module 10, which is beneficial to the lightweight design of the electronic device 100.

[0070] exist Fig.13 In the structure shown, the third lens 190 is attached to the beam splitter 110 , which is beneficial to the installation and positioning of the third lens 190 , so as to ensure that the optical axis of the third lens 190 and the optical axis of the beam splitter 110 have a high degree of overlap.

[0071] exist Fig.12In the structure shown, the third lens 190 is attached to the first reflector 170 , which is beneficial to the installation and positioning of the third lens 190 to ensure that the optical axis of the third lens 190 and the optical axis of the first reflector 170 have a high degree of overlap.

[0072] Optionally, the first camera is a telephoto camera, and the second camera is a wide-angle camera.

[0073] Optionally, the actual light path R3 of the lens in any lens of the first lens 120, the second lens 140, and the third lens 190 is less than or equal to the effective light path R1. Fig.14 For example, the lens is composed of an effective light path R1 (the aperture through which the imaging light passes, Fig.14 The first area A1 in the ineffective light path R2 ( Fig.14 In this embodiment, the actual light path R3 is less than or equal to the effective light path R1, that is, the ineffective light path R2 in the Y direction is cut off, so that the size of the lens in the Y direction can be reduced (by Fig.14 The lens X1 is cut into lens X2), which is conducive to miniaturization of the camera module 10.

[0074] Optionally, the beam splitter 110, the first lens 120, and the first photosensitive element 130 constitute a first camera, and the beam splitter 110, the second lens 140, and the second photosensitive element 150 constitute a second camera, and the equivalent focal length of the second camera (for example, 35 mm) is less than or equal to the equivalent focal length of the first camera (for example, 35 mm). Specifically, the equivalent focal length f of the camera and the field of view FOV have the following relationship: FOV = 2*arctan(d / 2*f), where d is the diagonal length of the photosensitive element. It can be seen from the relationship that the larger f is, the smaller FOV is. Therefore, "the equivalent focal length of the second camera is less than or equal to the equivalent focal length of the first camera" means "the field of view of the second camera is greater than or equal to the field of view of the first camera", which means that the shooting field of view of the first camera is included in the shooting field of view of the second camera. With this arrangement, when the first image with color captured by the first camera and the second image captured by the second camera are fused, it can be ensured that the details of all areas of the first image can be enhanced, and finally a third image with rich details and color is obtained.

[0075] The camera module 10 provided above can be assembled in the following manner: Figure 3 The structure shown is taken as an example.

[0076] For the second camera, the beam splitter 110 has a first optical axis, the second lens 140 has a second optical axis, and the second photosensitive element 150 has a third optical axis. First, the position of the second optical axis of the second lens 140 is fixed, and the second optical axis coincides with the first optical axis. Then, the third optical axis of the second photosensitive element 150 is adjusted, and the offset and tilt angle of the third optical axis relative to the second optical axis in the X, Y, and Z directions are calibrated until the second optical axis and the third optical axis coincide, and when the defocus modulation transfer function (MTF) curve of the second camera changes from a discrete state to a concentrated state, the relative position of the second photosensitive element 150 and the second lens 140 is fixed, so that the second camera has good resolution.

[0077] For the first camera, the beam splitter 110 has a fourth optical axis, the first lens 120 has a fifth optical axis, and the first photosensitive element 130 has a sixth optical axis. First, fix the position of the second optical axis. Then, adjust the fifth and sixth optical axes, calibrate the offset and tilt angle of the fifth and sixth optical axes relative to the fourth optical axis in the X, Y and Z directions, until the fourth, fifth and sixth optical axes coincide, and the defocus MTF curve of the first camera changes from discrete to concentrated, fix the positions of the first lens 120 and the first photosensitive element 130, so that the first camera can also have better resolution.

[0078] The above-mentioned assembly method is to assemble the second camera first and then assemble the first camera. Of course, in other implementations, the first camera may be assembled first and then the second camera.

[0079] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application, and these improvements and modifications are also regarded as the scope of protection of the present application.

Claims

1. A camera module, characterized in that: The camera module comprises: A beam splitter, the beam splitter is used to split the received light into a first light propagating along a first direction and a second light propagating along a second direction; a first lens and a first photosensitive element, wherein the first lens is used to receive the first light propagating along the first direction, and the first photosensitive element is used to receive visible light in the first light propagated by the first lens to form a first image; and A second lens and a second photosensitive element, wherein the second lens is used to receive the second light propagating along the second direction, and the second photosensitive element is used to receive the invisible light in the second light propagated by the second lens to form a second image.

2. The camera module according to claim 1, wherein: The camera module further includes a first cutoff film, and the first cutoff film is used to cut off invisible light in the first light; The first cut-off film is disposed on the first lens; and / or the first cut-off film is disposed on the first photosensitive element.

3. The camera module according to claim 1, wherein: The camera module further includes a second cutoff film, and the second cutoff film is used to cut off the visible light in the second light; The second cut-off film is arranged on the second lens; and / or the second photosensitive element is provided with a second cut-off film.

4. The camera module according to claim 1, wherein: The second lens has a component added therein that can absorb at least a portion of visible light; and / or the second photosensitive element has a component added therein that can absorb at least a portion of visible light.

5. The camera module according to claim 1, wherein: The camera module also includes an intermediate lens, which is arranged between the beam splitter and the second lens. The intermediate lens and the beam splitter are both prisms and together form a cube shape.

6. The camera module according to claim 5, characterized in that: The surface of the intermediate lens is provided with a second cut-off film capable of absorbing at least a portion of visible light; and / or, a component capable of absorbing at least a portion of visible light is added to the intermediate lens.

7. The camera module according to claim 1, wherein: The camera module further includes a first reflector, which is disposed on the object side of the beam splitter and is used to reflect light from the outside to the beam splitter.

8. The camera module according to claim 7, wherein: The beam splitter has a first light emitting surface and a second light emitting surface, the first light emitting surface faces the first lens, the second light emitting surface faces the second lens, the first light emitting surface is provided with a first cutoff film capable of absorbing at least part of invisible light, and / or the second light emitting surface is provided with a second cutoff film capable of absorbing at least part of visible light.

9. The camera module according to any one of claims 1 to 8, characterized in that: The beam splitter is a prism or a plane mirror.

10. The camera module according to any one of claims 1 to 8, characterized in that: The camera module also includes a second reflector, which is arranged on a side of the first lens away from the beam splitter, and is used to reflect the first light from the first lens to the first photosensitive element.

11. The camera module according to claim 10, wherein: The direction of the second reflective element toward the first photosensitive element is the same as or opposite to the direction of the second lens toward the second photosensitive element.

12. The camera module according to any one of claims 1 to 8, characterized in that: The camera module also includes a third lens, which is arranged opposite to the beam splitter and is used to guide external light to the beam splitter.

13. The camera module according to any one of claims 1 to 8, characterized in that: The beam splitter, the first lens, and the first photosensitive element constitute a first camera, and the beam splitter, the second lens, and the second photosensitive element constitute a second camera. The equivalent focal length of the second camera is less than or equal to the equivalent focal length of the first camera.

14. An electronic device, characterized in that: The electronic device comprises a device body and a camera module as described in any one of claims 1 to 13, and the camera module is installed on the device body.

15. The electronic device according to claim 14, characterized in that: The electronic device also includes a processor, which is used to fuse the first image and the second image formed by the camera module to form a third image.

Images